WO2022227871A1 - Tobacco drying device and tobacco drying method - Google Patents

Tobacco drying device and tobacco drying method Download PDF

Info

Publication number
WO2022227871A1
WO2022227871A1 PCT/CN2022/079896 CN2022079896W WO2022227871A1 WO 2022227871 A1 WO2022227871 A1 WO 2022227871A1 CN 2022079896 W CN2022079896 W CN 2022079896W WO 2022227871 A1 WO2022227871 A1 WO 2022227871A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
real
heat exchanger
time
indoor heat
Prior art date
Application number
PCT/CN2022/079896
Other languages
French (fr)
Chinese (zh)
Inventor
杨公增
李丹
Original Assignee
青岛海尔空调电子有限公司
青岛海尔空调器有限总公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔空调电子有限公司, 青岛海尔空调器有限总公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调电子有限公司
Publication of WO2022227871A1 publication Critical patent/WO2022227871A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention belongs to the technical field of tobacco drying, and in particular relates to a tobacco drying device and a control method thereof.
  • the heat pump dryer includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a throttling component.
  • the high-temperature and high-pressure gaseous refrigerant flowing out of the compressor enters the indoor heat exchanger, and the refrigerant releases heat in the indoor heat exchanger.
  • the air passing through the indoor heat exchanger is heated, and the heated hot air is transported to the drying room through the air duct, and the hot air is used to dry the tobacco in the drying room.
  • the dried tobacco has low moisture content, is brittle when dried, and cannot be directly baked.
  • the tobacco needs to be re-moisturized by a moisture-rejuvenation process.
  • two processing methods are usually adopted in the post-drying tobacco drying process: (1) Open the door of the drying room, and use the time when the humidity is high at night or rainy days to re-moisture naturally; (2) Set up a tobacco moisturizing humidifier separately. , To re-moisture the tobacco by spray humidification.
  • the spray structure of the humidifier is generally set in the drying room, and the tiny water droplets sprayed by the spray structure are directly sprayed and dripped on the surface of the tobacco. It is easy to cause spots on the tobacco surface and reduce the quality of tobacco. Moreover, it is necessary to separately purchase a humidifier humidifier, which increases the production cost of tobacco drying.
  • the purpose of the present invention is to provide a kind of tobacco drying equipment and drying method, improve the efficiency and reliability of moisture regain, and improve the quality of tobacco.
  • the tobacco drying method provided by the invention adopts the following technical solutions to be realized:
  • a method for drying tobacco comprising:
  • the heat pump dryer is controlled to operate in a heating mode, and at the same time, the water spray device is controlled to spray water to the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate; maximum flow rate;
  • controlling the water spraying device to spray water on the surface of the indoor heat exchanger, and the water spraying speed is determined according to the real-time air temperature in the drying room;
  • the water spraying device is controlled to stop spraying water.
  • the water spraying speed is determined according to the real-time air temperature in the drying room, which specifically includes:
  • the change rate of the water spray speed determined according to the first relationship is greater than the change rate of the water spray speed determined according to the second relationship.
  • the method further includes:
  • the fan in the heat pump dryer is controlled to run forward at the highest rotational speed.
  • the reconditioning control process is exited.
  • the method further includes performing a process of cleaning the indoor heat exchanger
  • the process of cleaning the indoor heat exchanger specifically includes:
  • the water spraying device is controlled to spray water to the surface of the indoor heat exchanger, and at the same time, the fan in the heat pump dryer is controlled to run in reverse.
  • the process of cleaning the indoor heat exchanger further includes:
  • the water spraying device is controlled to spray water on the surface of the indoor heat exchanger.
  • the process of cleaning the indoor heat exchanger further includes:
  • the fan is controlled to continue to run in reverse to set a delay time, and then the process of cleaning the indoor heat exchanger is exited.
  • the method further includes:
  • the tobacco drying equipment provided by the invention adopts the following technical scheme to realize:
  • a tobacco drying equipment including a heat pump dryer, further includes:
  • an air humidity acquisition unit used to acquire the real-time air humidity in the drying room at least during the moisture regain control process
  • a water spray device for controlled spraying of water to the surface of the indoor heat exchanger of the heat pump dryer
  • the control unit is at least configured to perform the following first control process when the real-time air humidity is less than the humidity lower limit threshold during the moisture regain control process:
  • controlling the water spraying device to spray water on the surface of the indoor heat exchanger, and the water spraying speed is determined according to the real-time air temperature in the drying room;
  • the water spraying device is controlled to stop spraying water.
  • the water spray device includes:
  • the water delivery pipeline the input end of which is used to receive the water supply source
  • controllable valve which is arranged in the water delivery pipeline and controlled by the control unit
  • a water distributor the water inlet end of which is communicated with the output end of the water delivery pipeline
  • a sprayer which is communicated with the water outlet end of the water distributor, is used for spraying water to the surface of the indoor heat exchanger.
  • the advantages and positive effects of the present invention are: in the tobacco drying method and the tobacco drying equipment provided by the present invention, in the moisture regain control process, when the real-time air humidity is small, the water spray device is controlled. Water is sprayed on the surface of the indoor heat exchanger of the heat pump dryer, and the circulating air in the air duct is humidified when passing through the indoor heat exchanger. When the air enters the drying room through the air duct and the circulating air inlet of the drying room, the moisture particles in the air are very small, almost all fog-like, and will not produce spots on the surface of the tobacco, improving the quality of the tobacco; The water spray device realizes controllable moisture regain, high moisture regain efficiency and strong reliability.
  • the water spraying speed changes according to the real-time air humidity and real-time air temperature.
  • the real-time air humidity is small, the water spraying speed is the largest, and the heat pump dryer runs hot, and the heat of the indoor heat exchanger is used to speed up the evaporation of water at a faster speed.
  • Humidify and re-moisturize to improve the efficiency of re-moisturizing;
  • the water spray speed is regulated according to the real-time air temperature, so as to achieve a balance between the air temperature and air humidity in the drying room, and avoid excessive or insufficient humidification. Efficiency and reliability.
  • Fig. 1 is a flow chart based on one embodiment of the tobacco drying method of the present invention
  • Fig. 2 is a flow chart based on another embodiment of the tobacco drying method of the present invention.
  • Fig. 3 is the structural representation based on one embodiment of the tobacco drying equipment of the present invention.
  • FIG. 4 is a schematic top view of a part of the structure of FIG. 3 .
  • 301 outdoor unit; 302, indoor heat exchanger; 303, fan; 304, air duct; 305, air outlet; 306, drying room; 307, humidity sensor; 308, tobacco holder; 309, tobacco; 310, return air outlet 311, water outlet; 312, water pipeline; 313, controllable valve; 314, water distributor; 315, sprinkler.
  • connection may be directly connected or indirectly connected through an intermediate medium; “connected” may It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
  • connection may be directly connected or indirectly connected through an intermediate medium; “connected” may It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
  • specific meanings of the above terms in the present invention can be understood according to specific situations.
  • FIG. 1 shows a flowchart of an embodiment of a tobacco drying method based on the present invention, specifically, a flowchart of an embodiment of a tobacco drying method capable of improving moisture regain efficiency and moisture regain reliability.
  • the process of the tobacco drying method of this embodiment is:
  • Step 101 During the moisture regain control process, obtain the real-time air humidity in the drying room.
  • the start of the moisture regain control process is a process after the high temperature drying process is completed.
  • the tobacco drying process is detected in real time by the controller of the heat pump dryer, and the specific detection method is realized by using the existing technology.
  • the controller sends a prompt message: whether the drying process is over, whether to enter the moisture regain stage.
  • the controller After comparing and checking the actual situation of the tobacco in the drying room, if it has not yet reached the standard of tobacco dry gluten, you can choose not to enter the moisture regain stage, and perform the high-temperature dry rib roasting process; if it reaches the standard of tobacco dry rib, you can choose to enter Resurrection stage. After that, the controller will control the tobacco drying equipment to enter the moisture regain control process.
  • the real-time air humidity in the drying room is continuously obtained.
  • the means for obtaining the air humidity in the drying room is realized by using the prior art. For example, set a humidity sensor in the drying room to detect and obtain real-time air humidity; or set up a wet bulb temperature sensor in the drying room to detect and obtain real-time air humidity.
  • different controls are performed according to the magnitude of the real-time air humidity. Specifically, different controls are performed according to the comparison result of the magnitude relationship between the real-time air humidity and the humidity threshold.
  • the real-time air humidity is compared to a lower humidity threshold and/or an upper humidity threshold.
  • the humidity lower threshold and humidity upper threshold are preset known humidity values, which may be fixed values or non-fixed values modified through authorization, but for a specific control process, the values are generally fixed. unchanged value.
  • step 102 and step 103 or the process of step 104 and step 105 or the process of step 106 and step 107 is selected to be executed.
  • Step 102 When the real-time air humidity is less than the lower humidity threshold, perform the first control process of Step 103.
  • Step 103 control the heat pump dryer to operate in a heating mode, and at the same time control the water spray device to spray water on the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate.
  • the real-time air humidity is less than the lower humidity threshold, and the air humidity in the drying room is low.
  • the heat pump dryer is controlled to operate in a heating mode, and at the same time, the water spray device is controlled to spray water on the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate.
  • the first flow rate is the maximum flow rate of the water spray device.
  • the tobacco drying equipment of this embodiment includes not only a heat pump dryer, but also a water spray device, which can controllably spray water on the surface of the indoor heat exchanger in the heat pump dryer.
  • a water spray device which can controllably spray water on the surface of the indoor heat exchanger in the heat pump dryer.
  • the heat pump dryer operates in the heating mode, the indoor heat exchanger releases heat, and the surface temperature is high.
  • the water spray device sprays water on the surface of the indoor heat exchanger at the maximum flow rate. Under the evaporation of the indoor heat exchanger, the water droplets on the surface of the indoor heat exchanger evaporate rapidly, producing a large amount of water vapor, so that the air passing through the indoor heat exchanger becomes Humid air with high humidity.
  • the moist air enters the drying room, and the tobacco in the drying room is quickly humidified and re-moisturized, and the re-moisturizing efficiency is high.
  • Step 104 If the real-time air humidity is not less than the lower humidity threshold and less than the upper humidity threshold, perform the second control process of Step 105.
  • Step 105 Control the water spray device to spray water on the surface of the indoor heat exchanger, and the water spray speed is determined according to the real-time air temperature in the drying room.
  • the real-time air humidity is not less than the lower humidity threshold, but less than the upper humidity threshold, and the air humidity in the drying room is moderate.
  • the water spraying device is still controlled to spray water on the surface of the indoor heat exchanger, but the water spraying speed is not a fixed value, but is determined according to the real-time air temperature in the drying room.
  • the acquisition of real-time air temperature can be detected and acquired by setting a temperature sensor in the drying room.
  • the heat pump dryer controls the working state of the dryer according to the real-time air temperature in the drying room, so that the temperature in the drying room can obtain the best value in different drying process stages.
  • the water spray device is regulated to spray water on the surface of the indoor heat exchanger, and the water spray speed is reduced when the real-time air temperature is high. Particle water droplets enter the drying room, causing spots on the surface of the tobacco. On the other hand, it avoids the high temperature and high humidity environment and affects the moisture regain effect.
  • the real-time air temperature is low, the water spray speed is increased, on the one hand, the indoor heat exchange is fully utilized.
  • the heat of the device is used to evaporate the water, so as to control the moisture regain of the tobacco, and on the other hand, it can improve the moisture regain effect.
  • the specific determination method of controlling the water spraying speed according to the real-time air temperature it can be determined and adjusted according to the system parameters of the tobacco drying equipment and the applied drying room structure. As long as the balance of air temperature and air humidity in the drying room can be achieved, It is sufficient to avoid insufficient or excessive humidification, and the specific determination means is not limited in this embodiment.
  • Step 106 When the real-time air humidity is not less than the humidity upper limit threshold, perform the third control process of Step 107.
  • Step 107 Control the water spraying device to stop spraying water.
  • the real-time air humidity is not less than the humidity upper threshold, and the air humidity in the drying room is relatively high.
  • the water spray device is controlled to stop spraying water.
  • the water spray device is controlled to spray water on the surface of the indoor heat exchanger of the heat pump dryer, and the circulating air in the air duct It is humidified when passing through the indoor heat exchanger, and since the indoor heat exchanger is at a certain distance from the circulating air inlet of the drying room, the humidified air enters the drying room through the air duct and the circulating air inlet of the drying room.
  • the moisture particles in the tobacco are very small, almost all in the form of mist, which will not produce spots on the surface of the tobacco, improving the quality of the tobacco; because the moisture regaining process is controlled by a water spray device, the moisture regaining efficiency is high and the reliability is strong.
  • the water spraying speed changes according to the real-time air humidity and real-time air temperature. When the real-time air humidity is small, the water spraying speed is the largest, and the heat pump dryer runs hot, and the heat of the indoor heat exchanger is used to speed up the evaporation of water at a faster speed.
  • Humidify and re-moisturize to improve the efficiency of re-moisturizing when the real-time air humidity is moderate, the water spray speed is regulated according to the real-time air temperature, so as to achieve a balance between the air temperature and air humidity in the drying room, and avoid excessive or insufficient humidification. Efficiency and reliability.
  • the fan in the heat pump dryer is controlled to run forward at the highest speed, so as to speed up the air flow in the drying room and improve the moisture regain efficiency.
  • the end of the moisture regain control process can be realized by various means. As a preferred embodiment, when the duration of the second control process reaches the set reconditioning time threshold, the reconditioning control process is exited to avoid excessive reconditioning or insufficient reconditioning.
  • the water spraying speed is determined according to the real-time air temperature in the drying room, and the following process is used to execute:
  • the water spraying speed is determined according to the first relationship and the real-time air temperature change rate; if the real-time air temperature is not less than the set temperature threshold, the water spraying speed is determined according to the second relationship and the real-time air temperature change rate .
  • the change rate of the water spray speed determined according to the first relationship is greater than the change rate of the water spray speed determined according to the second relationship.
  • the water spraying speed will vary greatly with the temperature change; if the air temperature is not less than the set temperature threshold, the water spraying speed will vary greatly with the temperature change.
  • the change is small; thus, the change of water evaporation capacity at different temperatures can be matched to achieve a better moisture regain effect.
  • the water spray device sprays water on the surface of the indoor heat exchanger, and uses the evaporation of water to regain moisture in the drying room.
  • the feature of spraying water on the surface of the indoor heat exchanger can also be used to clean the indoor heat exchanger.
  • FIG. 2 is a flow chart of another embodiment of the tobacco drying method according to the present invention, specifically, a flow chart of an embodiment of cleaning the indoor heat exchanger.
  • the specific process includes:
  • Step 201 enter the process of cleaning the indoor heat exchanger, and control the heat pump dryer to stop running.
  • Step 202 control the water spray device to spray water on the surface of the indoor heat exchanger, and control the fan in the heat pump dryer to run in reverse at the same time.
  • the water spray device sprays water on the surface of the indoor heat exchanger to wash away impurities such as dust adsorbed on the surface of the indoor heat exchanger.
  • the fan in the dryer is controlled to run in reverse, preferably at a high speed, to blow off impurities on the surface of the heat exchanger and prevent impurities from entering the drying room.
  • the fan after entering the cleaning process of the indoor heat exchanger and controlling the heat pump dryer to stop running, the fan is first controlled to run in reverse, and after the reverse running time of the fan reaches the set pre-cleaning time, the The water spray device is controlled to spray water on the surface of the indoor heat exchanger.
  • the reverse operation of the fan By first controlling the reverse operation of the fan to set the pre-cleaning time, for example, first reversing the operation for 3 minutes, blowing off the large foreign matter and impurities attached to the surface of the indoor heat exchanger, and then cleaning with water, which can further improve the cleaning efficiency. It can also reduce water consumption.
  • the water spray device after the time that the water spray device sprays water on the surface of the indoor heat exchanger reaches the set water spray cleaning time, the water spray device is controlled to stop spraying water; after the water spray device stops spraying water, the control The fan continues to run in reverse for the set delay time, and then exits the process of cleaning the indoor heat exchanger.
  • presetting the water spray cleaning time for example, setting the water spray cleaning time to 10 minutes, as a control parameter for whether to end the water spray cleaning, it is convenient to realize the automatic control of the cleaning of the indoor heat exchanger and improve the cleaning convenience.
  • control the fan After the water spray is stopped, control the fan to continue to run in reverse to set the delay time.
  • Whether to start the cleaning of the indoor heat exchanger can be started by the user according to the actual situation, or it can be automatically judged by the drying equipment. In order to improve the automation of the equipment, it is preferable to make the judgment automatically by the drying equipment. There are many feasible methods for the equipment to automatically judge. For example, after the last cleaning time reaches the set interval time, a cleaning reminder is issued. In order to increase the accuracy of the cleaning judgment, as a preferred embodiment, the following method is used to judge whether to perform the cleaning of the indoor heat exchanger:
  • the continuous set running time of the real-time working current of the fan in forward operation is greater than the set current threshold, and it is determined that the indoor heat exchanger is dirty and blocked, and it is determined that the indoor heat exchanger needs to be cleaned.
  • the cleaning of the indoor heat exchanger is not performed immediately, but the cleaning of the indoor heat exchanger is performed when the moisture regain control is not performed, so as to avoid the reverse operation of the fan during cleaning and the inability to supply air into the drying room and affect the moisture regain efficiency. .
  • FIG. 3 and FIG. 4 show an embodiment of the tobacco drying device according to the present invention, wherein FIG. 3 is a schematic structural diagram of the embodiment, and FIG. 4 is a top plan schematic view of a part of the structure of FIG.
  • the tobacco drying equipment of this embodiment includes a heat pump dryer.
  • the heat pump dryer includes an outdoor unit 301 and an indoor heat exchanger 302
  • the outdoor unit 301 includes a compressor, an outdoor heat exchanger, a throttle valve, an outdoor fan, etc.
  • the outdoor unit 301 and the indoor heat exchanger 302 Connected by refrigerant pipelines to form a refrigerant circulation system.
  • the tobacco drying equipment is used to dry the tobacco in the drying room.
  • the drying room 306 is formed with a drying room and an air duct 304, and the air duct 304 and the drying room communicate with the air supply port 305 at the upper part and the air return port 310 at the lower part.
  • a tobacco support 308 is arranged in the drying chamber, and the dried tobacco 309 is suspended on the tobacco support 308 .
  • the indoor heat exchanger 302 is installed in the air duct 304 , and a fan 303 is further installed in the air duct 304 above the indoor heat exchanger 302 , and a drain port 311 is formed at the lower end of the air duct 304 .
  • the fan 303 runs forward, sucking the air in the drying room from the return air port 310 into the air duct 304, and then sending it into the drying room through the air supply port 305.
  • the high-temperature and high-pressure gaseous refrigerant flowing out from the compressor of the outdoor unit 301 enters the indoor heat exchanger 302, and the refrigerant releases heat in the indoor heat exchanger 302 to heat the air passing through the indoor heat exchanger, and the heated air flows through the fan 303. Under the action, it is sent into the drying chamber from the air supply port 305, and the tobacco 309 in the drying chamber is dried.
  • the tobacco drying equipment further includes an air humidity acquisition unit, a water spray device and a control unit.
  • the air humidity acquisition unit is specifically a humidity sensor 307 disposed in the drying room of the drying room 306, and is used to detect and acquire the real-time air humidity in the drying room at least during the moisture regain control process.
  • the air humidity obtaining unit may also be a wet bulb temperature sensor, which is used to detect and obtain real-time air humidity.
  • the control unit (not shown in the figure), as the controller of the tobacco drying equipment, is used to complete the reminder and control of each stage of the drying process.
  • the water spray device is used to spray water to the surface of the indoor heat exchanger 302 of the heat pump dryer in a controlled manner, specifically, to spray water to the surface of the indoor heat exchanger 302 under the control of the control unit.
  • the water spray device includes a water delivery pipeline 312 , the input end of which is used to receive a water supply source, for example, connected to a water tank or a tap water pipeline, and receives water from the water tank or tap water pipeline.
  • a controllable valve 313 is provided in the water delivery pipeline 312, which is controlled by the control unit and used to control whether the water delivery pipeline 312 delivers water.
  • the controllable valve 313 is a solenoid valve.
  • the water spray device also includes a water distributor 314 and a sprayer 315, wherein the water inlet end of the water distributor 314 is communicated with the output end of the water delivery pipeline 312, and the shower device 315 is communicated with the water outlet end of the water distributor 314. .
  • the shower 315 includes a plurality of shower heads. With the configuration of the water distributor 314 and the shower 315, water can be sprayed to the surface of the indoor heat exchanger as uniformly and as completely as possible.
  • a water pump is also provided in the water spraying device and controlled by the control unit.
  • the tobacco drying equipment with the above structure can realize the moisture regain control process and the cleaning process of the indoor heat exchanger in the aforementioned tobacco drying method by using a heat pump dryer, a control unit, a water spray device, etc. technical effect that can be achieved.
  • control process please refer to the description of the aforementioned method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A tobacco drying device and a tobacco drying method. The method comprises: during a moisture regain control process, acquiring the real-time air humidity in a drying room (306); when the real-time air humidity is less than a lower-limit humidity threshold value, executing the following first control process: controlling a heat pump dryer to run a heating mode, and also controlling a water spraying apparatus to spray water onto the surface of an indoor heat exchanger (302) of the heat pump dryer at a first flow rate; when the real-time humidity is not less than the lower-limit humidity threshold value and is less than an upper-limit humidity threshold value, executing the following second control process: controlling the water spraying apparatus to spray water onto the surface of the indoor heat exchanger (302), wherein a water spraying rate is determined according to the real-time air temperature in the drying room (306); and when the real-time humidity is not less than the upper-limit humidity threshold value, executing the following third control process: controlling the water spraying apparatus to stop spraying water. By means of the method, the moisten regain efficiency and reliability can be improved, thereby improving the quality of tobacco.

Description

烟草烘干设备及烘干方法Tobacco drying equipment and drying method 技术领域technical field
本发明属于烟草烘干技术领域，具体地说，是涉及一种烟草烘干设备及其控制方法。The invention belongs to the technical field of tobacco drying, and in particular relates to a tobacco drying device and a control method thereof.
背景技术Background technique
随着经济的发展，绿色环保理念愈发重要。烟草烘干领域节能改造工作正大力推广中，采用热泵烘干机替换燃煤锅炉成为行业一大主流趋势。热泵烘干机包括有压缩机、室内热交换器、室外热交换器、节流部件，从压缩机流出的高温高压气态制冷剂进入室内热交换器，制冷剂在室内热交换器中放热，加热经过室内热交换器的空气，加热后的热空气通过风道输送至烘干房内，利用热空气对烘干房内的烟草进行烘干。With the development of the economy, the concept of green environmental protection is becoming more and more important. Energy-saving renovation work in the field of tobacco drying is being vigorously promoted, and the use of heat pump dryers to replace coal-fired boilers has become a major trend in the industry. The heat pump dryer includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a throttling component. The high-temperature and high-pressure gaseous refrigerant flowing out of the compressor enters the indoor heat exchanger, and the refrigerant releases heat in the indoor heat exchanger. The air passing through the indoor heat exchanger is heated, and the heated hot air is transported to the drying room through the air duct, and the hot air is used to dry the tobacco in the drying room.
烘干后的烟草水分含量低，干燥易碎，无法直接出炉。为了增加烟叶的水分，使烟叶变得柔软、有韧性，减少烟叶在加工过程中的损耗，在烟草烘干后期，需要经过回潮工艺进行烟草回潮处理。目前，烟草烘干后期回潮工艺通常采用两种处理方法：（1）打开烘干房库门，利用夜间或阴雨天湿度较大的时间，自然方式进行回潮；（2）单独设置烟草回潮加湿机，通过喷雾加湿方式对烟草进行回潮处理。The dried tobacco has low moisture content, is brittle when dried, and cannot be directly baked. In order to increase the moisture of the tobacco leaves, make the tobacco leaves soft and tough, and reduce the loss of the tobacco leaves in the process of processing, in the later stage of tobacco drying, the tobacco needs to be re-moisturized by a moisture-rejuvenation process. At present, two processing methods are usually adopted in the post-drying tobacco drying process: (1) Open the door of the drying room, and use the time when the humidity is high at night or rainy days to re-moisture naturally; (2) Set up a tobacco moisturizing humidifier separately. , To re-moisture the tobacco by spray humidification.
对于第一种采用外界潮湿空气进行自然回潮的方式，受天气因素影响大，回潮周期长，可靠性差，影响烟草烘干效率。对于第二种通过独立的烟草回潮加湿机对烟草进行回潮处理的方式，加湿机的喷雾结构一般设置在烘干房内，喷雾结构喷出的微小水珠颗粒直接喷洒、滴落在烟草表面，容易造成烟草表面产生斑点，降低烟草品质。而且，需要额外单独购置回潮加湿机，增加了烟草烘干生成成本。For the first method of using external humid air for natural moisture regain, it is greatly affected by weather factors, the moisture regain cycle is long, and the reliability is poor, which affects the tobacco drying efficiency. For the second method of re-moisturizing tobacco through an independent tobacco re-moisturizing humidifier, the spray structure of the humidifier is generally set in the drying room, and the tiny water droplets sprayed by the spray structure are directly sprayed and dripped on the surface of the tobacco. It is easy to cause spots on the tobacco surface and reduce the quality of tobacco. Moreover, it is necessary to separately purchase a humidifier humidifier, which increases the production cost of tobacco drying.
技术问题technical problem
本发明的目的在于提供一种烟草烘干设备及烘干方法，提高回潮效率和可靠性，提升烟草品质。The purpose of the present invention is to provide a kind of tobacco drying equipment and drying method, improve the efficiency and reliability of moisture regain, and improve the quality of tobacco.
技术解决方案technical solutions
为实现上述发明目的，本发明提供的烟草烘干方法采用下述技术方案予以实现：In order to realize the above-mentioned purpose of the invention, the tobacco drying method provided by the invention adopts the following technical solutions to be realized:
一种烟草烘干方法，所述方法包括：A method for drying tobacco, the method comprising:
在回潮控制过程中，获取烘干房内的实时空气湿度；During the moisture regain control process, obtain the real-time air humidity in the drying room;
在所述实时空气湿度小于湿度下限阈值时，执行下述的第一控制过程：When the real-time air humidity is less than the humidity lower limit threshold, the following first control process is performed:
控制热泵烘干机运行制热模式，同时控制喷水装置以第一流速向所述热泵烘干机的室内热交换器的表面喷水；其中，所述第一流速为所述喷水装置的最大流速；The heat pump dryer is controlled to operate in a heating mode, and at the same time, the water spray device is controlled to spray water to the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate; maximum flow rate;
在所述实时湿度不小于所述湿度下限阈值且小于湿度上限阈值时，执行下述的第二控制过程：When the real-time humidity is not less than the humidity lower threshold and less than the humidity upper threshold, the following second control process is performed:
控制所述喷水装置向所述室内热交换器的表面喷水，喷水速度根据烘干房内的实时空气温度确定；controlling the water spraying device to spray water on the surface of the indoor heat exchanger, and the water spraying speed is determined according to the real-time air temperature in the drying room;
在所述实时湿度不小于所述湿度上限阈值时，执行下述的第三控制过程：When the real-time humidity is not less than the humidity upper limit threshold, the following third control process is performed:
控制所述喷水装置停止喷水。The water spraying device is controlled to stop spraying water.
在其他一些优选实施例中，在所述第二控制过程中，所述喷水速度根据烘干房内的实时空气温度确定，具体包括：In some other preferred embodiments, in the second control process, the water spraying speed is determined according to the real-time air temperature in the drying room, which specifically includes:
获取烘干房内的所述实时空气温度；obtaining the real-time air temperature in the drying room;
若所述实时空气温度小于设定温度阈值，根据第一关系和实时空气温度变化率确定所述喷水速度； If the real-time air temperature is less than the set temperature threshold, determining the water spraying speed according to the first relationship and the real-time air temperature change rate;
若所述实时空气温度不小于所述设定温度阈值，根据第二关系和实时空气温度变化率确定所述喷水速度； If the real-time air temperature is not less than the set temperature threshold, determine the water spray speed according to the second relationship and the real-time air temperature change rate;
其中，在相同的实时空气温度变化率的条件下，根据所述第一关系确定的所述喷水速度的变化率大于根据所述第二关系确定的所述喷水速度的变化率。Wherein, under the condition of the same real-time air temperature change rate, the change rate of the water spray speed determined according to the first relationship is greater than the change rate of the water spray speed determined according to the second relationship.
在其他一些优选实施例中，所述方法还包括：In some other preferred embodiments, the method further includes:
在所述回潮控制过程中，控制所述热泵烘干机中的风机以最高转速正向运转。During the moisture regain control process, the fan in the heat pump dryer is controlled to run forward at the highest rotational speed.
在其他一些优选实施例中，在所述第二控制过程的持续时间达到设定回潮时间阈值时，退出所述回潮控制过程。In some other preferred embodiments, when the duration of the second control process reaches a set reconditioning time threshold, the reconditioning control process is exited.
在其他一些优选实施例中，所述方法还包括执行室内热交换器清洗的过程；In some other preferred embodiments, the method further includes performing a process of cleaning the indoor heat exchanger;
所述室内热交换器清洗的过程具体包括：The process of cleaning the indoor heat exchanger specifically includes:
进入所述室内热交换器清洗的过程，控制热泵烘干机停止运行；Enter the process of cleaning the indoor heat exchanger, and control the heat pump dryer to stop running;
控制所述喷水装置向所述室内热交换器的表面喷水，同时控制所述热泵烘干机中的风机反向运转。The water spraying device is controlled to spray water to the surface of the indoor heat exchanger, and at the same time, the fan in the heat pump dryer is controlled to run in reverse.
在其他一些优选实施例中，所述室内热交换器清洗的过程还包括：In some other preferred embodiments, the process of cleaning the indoor heat exchanger further includes:
在控制所述热泵烘干机停止运行后，先控制所述风机反向运转；After controlling the heat pump dryer to stop running, firstly control the fan to run in reverse;
在所述风机反向运转的时间达到设定预清洗时间后，再控制所述喷水装置向所述室内热交换器的表面喷水。After the reverse running time of the fan reaches the preset pre-cleaning time, the water spraying device is controlled to spray water on the surface of the indoor heat exchanger.
在其他一些优选实施例中，所述室内热交换器清洗的过程还包括：In some other preferred embodiments, the process of cleaning the indoor heat exchanger further includes:
在所述喷水装置向所述室内热交换器的表面喷水的时间达到设定喷水清洗时间后，控制所述喷水装置停止喷水；After the time that the water spray device sprays water on the surface of the indoor heat exchanger reaches the set water spray cleaning time, controlling the water spray device to stop spraying water;
在所述喷水装置停止喷水后，控制所述风机继续反向运转设定延迟时间，然后退出所述室内热交换器清洗的过程。After the water spraying device stops spraying water, the fan is controlled to continue to run in reverse to set a delay time, and then the process of cleaning the indoor heat exchanger is exited.
在其他一些优选实施例中，所述方法还包括：In some other preferred embodiments, the method further includes:
在所述风机正向运转过程中，获取所述风机的实时工作电流；During the forward running process of the fan, obtain the real-time working current of the fan;
在所述实时工作电流大于设定电流阈值并持续设定运行时间后，确定需执行所述室内热交换器清洗的过程；After the real-time working current is greater than the set current threshold and continues for the set running time, it is determined that the process of cleaning the indoor heat exchanger needs to be performed;
在确定需执行所述室内热交换器清洗的过程，且未处于所述回潮控制过程时，再执行所述进入所述室内热交换器清洗的过程。When it is determined that the process of cleaning the indoor heat exchanger needs to be performed and is not in the moisture regain control process, the process of entering the indoor heat exchanger for cleaning is performed again.
为实现前述发明目的，本发明提供的烟草烘干设备采用下述技术方案予以实现：In order to realize the foregoing invention purpose, the tobacco drying equipment provided by the invention adopts the following technical scheme to realize:
一种烟草烘干设备，包括热泵烘干机，还包括：A tobacco drying equipment, including a heat pump dryer, further includes:
空气湿度获取单元，用于至少在回潮控制过程中获取烘干房内的实时空气湿度；an air humidity acquisition unit, used to acquire the real-time air humidity in the drying room at least during the moisture regain control process;
喷水装置，用于受控地向所述热泵烘干机的室内热交换器的表面喷水；a water spray device for controlled spraying of water to the surface of the indoor heat exchanger of the heat pump dryer;
控制单元，至少用于在回潮控制过程中，在所述实时空气湿度小于湿度下限阈值时，执行下述的第一控制过程：The control unit is at least configured to perform the following first control process when the real-time air humidity is less than the humidity lower limit threshold during the moisture regain control process:
控制热泵烘干机运行制热模式，同时控制所述喷水装置以第一流速向所述室内热交换器的表面喷水；其中，所述第一流速为所述喷水装置的最大流速；Controlling the heat pump dryer to operate in a heating mode, while controlling the water spray device to spray water to the surface of the indoor heat exchanger at a first flow rate; wherein the first flow rate is the maximum flow rate of the water spray device;
还用于在所述实时湿度不小于所述湿度下限阈值且小于湿度上限阈值时，执行下述的第二控制过程：It is also used to execute the following second control process when the real-time humidity is not less than the lower humidity threshold and less than the humidity upper threshold:
控制所述喷水装置向所述室内热交换器的表面喷水，喷水速度根据烘干房内的实时空气温度确定；controlling the water spraying device to spray water on the surface of the indoor heat exchanger, and the water spraying speed is determined according to the real-time air temperature in the drying room;
还用于在所述实时湿度不小于所述湿度上限阈值时，执行下述的第三控制过程：It is also used for executing the following third control process when the real-time humidity is not less than the humidity upper limit threshold:
控制所述喷水装置停止喷水。The water spraying device is controlled to stop spraying water.
在其他一些优选实施例中，所述喷水装置包括：In some other preferred embodiments, the water spray device includes:
输水管路，其输入端用来接收供水水源；The water delivery pipeline, the input end of which is used to receive the water supply source;
可控阀，其设置在所述输水管路中，受控于所述控制单元；a controllable valve, which is arranged in the water delivery pipeline and controlled by the control unit;
布水器，其进水端与所述输水管路的输出端连通；a water distributor, the water inlet end of which is communicated with the output end of the water delivery pipeline;
喷淋器，其与所述布水器的出水端连通，用于向所述室内热交换器的表面喷水。A sprayer, which is communicated with the water outlet end of the water distributor, is used for spraying water to the surface of the indoor heat exchanger.
有益效果beneficial effect
与现有技术相比，本发明的优点和积极效果是：本发明提供的烟草烘干方法及烟草烘干设备，在回潮控制过程中，在实时空气湿度较小的情况下，控制喷水装置向热泵烘干机的室内热交换器的表面喷水，风道中的循环空气经过室内热交换器时被加湿，而且，由于室内热交换器距离烘干房的循环空气入口有一定距离，加湿后的空气在经风道及烘干房的循环空气入口进入烘干房时空气中的水分颗粒非常小，几乎全为雾状，不会在烟草表面产生斑点，提升烟草品质；由于回潮过程为通过喷水装置实现可控回潮，回潮效率高，可靠性强。而且，喷水速度根据实时空气湿度及实时空气温度变化，在实时空气湿度较小时，喷水速度最大，热泵烘干机制热运行，利用室内热交换器的热量加快水分蒸发，以较快的速度进行加湿回潮，提高回潮效率；在实时空气湿度适中时，根据实时空气温度调控喷水速度，实现烘干房内空气温度与空气湿度的均衡，且避免过度加湿或加湿不足，进一步提升烟草回潮的效率和可靠性。Compared with the prior art, the advantages and positive effects of the present invention are: in the tobacco drying method and the tobacco drying equipment provided by the present invention, in the moisture regain control process, when the real-time air humidity is small, the water spray device is controlled. Water is sprayed on the surface of the indoor heat exchanger of the heat pump dryer, and the circulating air in the air duct is humidified when passing through the indoor heat exchanger. When the air enters the drying room through the air duct and the circulating air inlet of the drying room, the moisture particles in the air are very small, almost all fog-like, and will not produce spots on the surface of the tobacco, improving the quality of the tobacco; The water spray device realizes controllable moisture regain, high moisture regain efficiency and strong reliability. Moreover, the water spraying speed changes according to the real-time air humidity and real-time air temperature. When the real-time air humidity is small, the water spraying speed is the largest, and the heat pump dryer runs hot, and the heat of the indoor heat exchanger is used to speed up the evaporation of water at a faster speed. Humidify and re-moisturize to improve the efficiency of re-moisturizing; when the real-time air humidity is moderate, the water spray speed is regulated according to the real-time air temperature, so as to achieve a balance between the air temperature and air humidity in the drying room, and avoid excessive or insufficient humidification. Efficiency and reliability.
结合附图阅读本发明的具体实施方式后，本发明的其他特点和优点将变得更加清楚。Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings.
附图说明Description of drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.
图1 是基于本发明烟草烘干方法一个实施例的流程图；Fig. 1 is a flow chart based on one embodiment of the tobacco drying method of the present invention;
图2是基于本发明烟草烘干方法另一个实施例的流程图；Fig. 2 is a flow chart based on another embodiment of the tobacco drying method of the present invention;
图3是基于本发明烟草烘干设备一个实施例的结构示意图；Fig. 3 is the structural representation based on one embodiment of the tobacco drying equipment of the present invention;
图4是图3部分结构的俯视示意图。FIG. 4 is a schematic top view of a part of the structure of FIG. 3 .
其中，附图标记及其对应的部件名称如下：Among them, the reference numerals and their corresponding component names are as follows:
301、室外机；302、室内热交换器；303、风机；304、风道；305、送风口；306、烘干房；307、湿度传感器；308、烟草支架；309、烟草；310、回风口；311、排水口；312、输水管路；313、可控阀；314、布水器；315、喷淋器。301, outdoor unit; 302, indoor heat exchanger; 303, fan; 304, air duct; 305, air outlet; 306, drying room; 307, humidity sensor; 308, tobacco holder; 309, tobacco; 310, return air outlet 311, water outlet; 312, water pipeline; 313, controllable valve; 314, water distributor; 315, sprinkler.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
为了使本发明的目的、技术方案及优点更加清楚明白，以下将结合附图和实施例，对本发明作进一步详细说明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
需要说明的是，在本发明的描述中，术语“上”、“下”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，或基于结构的常规布设和术语描述，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。It should be noted that, in the description of the present invention, the terms "upper", "lower", "inner", "outer", etc. indicate the direction or the positional relationship based on the direction or positional relationship shown in the drawings, or Descriptions based on conventional arrangements of structures and terminology, which are for ease of description only, do not indicate or imply that the devices or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。在本发明的描述中，“多个”的含义是至少两个，例如两个、三个等，除非另有明确具体的限定。In addition, the terms "first", "second" and "third" are used for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implying the number of technical features indicated. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
在本发明中，除非另有明确的规定和限定，术语“连接”、“连通”等应做广义理解，例如，“连通”可以为直接连通，也可以通过中间媒介间接连通；“连接”可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and the like should be understood in a broad sense. For example, "connected" may be directly connected or indirectly connected through an intermediate medium; "connected" may It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
另外，本发明各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
请参见图1，该图所示为基于本发明烟草烘干方法一个实施例的流程图，具体来说，是能够提高回潮效率和回潮可靠性的烟草烘干方法的一个实施例的流程图。Please refer to FIG. 1 , which shows a flowchart of an embodiment of a tobacco drying method based on the present invention, specifically, a flowchart of an embodiment of a tobacco drying method capable of improving moisture regain efficiency and moisture regain reliability.
如图1所示，该实施例的烟草烘干方法的过程为：As shown in Figure 1, the process of the tobacco drying method of this embodiment is:
步骤101：回潮控制过程中，获取烘干房内的实时空气湿度。Step 101: During the moisture regain control process, obtain the real-time air humidity in the drying room.
一般地，回潮控制过程的启动，是在完成高温干筋过程后的一个过程。Generally, the start of the moisture regain control process is a process after the high temperature drying process is completed.
作为优选实施方式，烟草烘干工艺进程通过热泵烘干机的控制器实时检测，具体检测手段采用现有技术来实现。当检测到整个烘干进程为高温干筋阶段持续时间达到规定时间后，控制器发出提示信息：烘干工艺结束，是否进入回潮阶段。在对烘干房内的烟草进行实际情况对比查看后，若还未达到烟草干筋标准，可选择不进入回潮阶段，进行执行高温干筋烘烤工艺；若达到烟草干筋标准，则选择进入回潮阶段。此后，控制器将控制烟草烘干设备进入回潮控制过程。As a preferred embodiment, the tobacco drying process is detected in real time by the controller of the heat pump dryer, and the specific detection method is realized by using the existing technology. When it is detected that the entire drying process is the high-temperature dry rib stage and the duration reaches the specified time, the controller sends a prompt message: whether the drying process is over, whether to enter the moisture regain stage. After comparing and checking the actual situation of the tobacco in the drying room, if it has not yet reached the standard of tobacco dry gluten, you can choose not to enter the moisture regain stage, and perform the high-temperature dry rib roasting process; if it reaches the standard of tobacco dry rib, you can choose to enter Resurrection stage. After that, the controller will control the tobacco drying equipment to enter the moisture regain control process.
在整个回潮控制过程中，不断获取烘干房内的实时空气湿度。烘干房内的空气湿度的获取手段采用现有技术来实现。譬如，在烘干房内设置湿度传感器，检测并获取实时空气湿度；或者，在烘干房内设置湿球温度传感器，检测并获取实时空气湿度。During the entire moisture regain control process, the real-time air humidity in the drying room is continuously obtained. The means for obtaining the air humidity in the drying room is realized by using the prior art. For example, set a humidity sensor in the drying room to detect and obtain real-time air humidity; or set up a wet bulb temperature sensor in the drying room to detect and obtain real-time air humidity.
该实施例根据实时空气湿度的大小执行不同的控制，具体来说，是根据实时空气湿度与湿度阈值的大小关系的比较结果，执行不同的控制。In this embodiment, different controls are performed according to the magnitude of the real-time air humidity. Specifically, different controls are performed according to the comparison result of the magnitude relationship between the real-time air humidity and the humidity threshold.
具体到该实施例中，将实时空气湿度与湿度下限阈值和/或湿度上限阈值进行比较。其中，湿度下限阈值和湿度上限阈值为预设的已知湿度值，可为固定不变值，也可为通过授权进行修改的非固定值，但对于一个具体的控制过程，其值一般为固定不变值。Specifically in this embodiment, the real-time air humidity is compared to a lower humidity threshold and/or an upper humidity threshold. Among them, the humidity lower threshold and humidity upper threshold are preset known humidity values, which may be fixed values or non-fixed values modified through authorization, but for a specific control process, the values are generally fixed. unchanged value.
然后，根据比较结果的不同，选择执行步骤102和步骤103的过程或步骤104和步骤105的过程或步骤106和步骤107的过程。Then, according to the difference of the comparison result, the process of step 102 and step 103 or the process of step 104 and step 105 or the process of step 106 and step 107 is selected to be executed.
步骤102：在实时空气湿度小于湿度下限阈值时，执行步骤103的第一控制过程。Step 102: When the real-time air humidity is less than the lower humidity threshold, perform the first control process of Step 103.
步骤103：控制热泵烘干机运行制热模式，同时控制喷水装置以第一流速向热泵烘干机的室内热交换器的表面喷水。Step 103 : control the heat pump dryer to operate in a heating mode, and at the same time control the water spray device to spray water on the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate.
实时空气湿度小于湿度下限阈值，烘干房内空气湿度较低。为提高回潮效率，控制热泵烘干机运行制热模式，同时控制喷水装置以第一流速向热泵烘干机的室内热交换器的表面喷水。其中，第一流速为喷水装置的最大流速。The real-time air humidity is less than the lower humidity threshold, and the air humidity in the drying room is low. In order to improve the moisture regain efficiency, the heat pump dryer is controlled to operate in a heating mode, and at the same time, the water spray device is controlled to spray water on the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate. Wherein, the first flow rate is the maximum flow rate of the water spray device.
该实施例的烟草烘干设备中，不仅包括有热泵烘干机，还包括有喷水装置，喷水装置能够受控地向热泵烘干机中的室内热交换器表面喷水。烟草烘干设备更具体的结构可参见图3和图4示出的实施例。The tobacco drying equipment of this embodiment includes not only a heat pump dryer, but also a water spray device, which can controllably spray water on the surface of the indoor heat exchanger in the heat pump dryer. For a more specific structure of the tobacco drying equipment, refer to the embodiments shown in FIG. 3 and FIG. 4 .
热泵烘干机运行制热模式，室内换热器放热，表面温度较高。喷水装置以最大流速向室内换热器表面喷水，在室内换热器蒸发作用下，室内换热器表面的水珠快速蒸发，产生大量水蒸气，使得经过室内换热器的空气变为湿度较大的湿空气。湿空气进入烘干房内，对烘干房内的烟草进行快速地加湿回潮，回潮效率高。The heat pump dryer operates in the heating mode, the indoor heat exchanger releases heat, and the surface temperature is high. The water spray device sprays water on the surface of the indoor heat exchanger at the maximum flow rate. Under the evaporation of the indoor heat exchanger, the water droplets on the surface of the indoor heat exchanger evaporate rapidly, producing a large amount of water vapor, so that the air passing through the indoor heat exchanger becomes Humid air with high humidity. The moist air enters the drying room, and the tobacco in the drying room is quickly humidified and re-moisturized, and the re-moisturizing efficiency is high.
步骤104：若实时空气湿度不小于湿度下限阈值且小于湿度上限阈值，执行步骤105的第二控制过程。Step 104: If the real-time air humidity is not less than the lower humidity threshold and less than the upper humidity threshold, perform the second control process of Step 105.
步骤105：控制喷水装置向室内热交换器的表面喷水，喷水速度根据烘干房内的实时空气温度确定。Step 105: Control the water spray device to spray water on the surface of the indoor heat exchanger, and the water spray speed is determined according to the real-time air temperature in the drying room.
实时空气湿度不小于湿度下限阈值，但小于湿度上限阈值，烘干房内空气湿度适中。此情况下，仍控制喷水装置向室内热交换器的表面喷水，但是，喷水速度不是固定值，而是根据烘干房内的实时空气温度确定。实时空气温度的获取，可以通过在烘干房内设置温度传感器检测并获取。The real-time air humidity is not less than the lower humidity threshold, but less than the upper humidity threshold, and the air humidity in the drying room is moderate. In this case, the water spraying device is still controlled to spray water on the surface of the indoor heat exchanger, but the water spraying speed is not a fixed value, but is determined according to the real-time air temperature in the drying room. The acquisition of real-time air temperature can be detected and acquired by setting a temperature sensor in the drying room.
一般的，热泵烘干机根据烘干房内的实时空气温度控制烘干机的工作状态，达到烘干房内的温度在不同的烘干工艺阶段得到最佳的数值。而根据实时空气温度调控喷水装置向室内热交换器的表面喷水，在实时空气温度较高时降低喷水速度，一方面避免过多的水在室内热交换器表面不能充分蒸发，使得大颗粒水珠进入到烘干房内，造成烟草表面产生斑点，另一方面避免造成高温高湿环境而影响回潮效果；而在实时空气温度较低时提高喷水速度，一方面充分利用室内热交换器的热量进行水分蒸发，实现对烟草回潮控制，另一方面能提高回潮效果。Generally, the heat pump dryer controls the working state of the dryer according to the real-time air temperature in the drying room, so that the temperature in the drying room can obtain the best value in different drying process stages. According to the real-time air temperature, the water spray device is regulated to spray water on the surface of the indoor heat exchanger, and the water spray speed is reduced when the real-time air temperature is high. Particle water droplets enter the drying room, causing spots on the surface of the tobacco. On the other hand, it avoids the high temperature and high humidity environment and affects the moisture regain effect. When the real-time air temperature is low, the water spray speed is increased, on the one hand, the indoor heat exchange is fully utilized. The heat of the device is used to evaporate the water, so as to control the moisture regain of the tobacco, and on the other hand, it can improve the moisture regain effect.
根据实时空气温度控制喷水速度的具体确定手段，可根据烟草烘干设备的***参数及所应用的烘干房结构进行确定和调整，只要能够达到烘干房内空气温度与空气湿度的均衡，避免加湿不足或过度加湿即可，该实施例对具体确定手段不作限定。According to the specific determination method of controlling the water spraying speed according to the real-time air temperature, it can be determined and adjusted according to the system parameters of the tobacco drying equipment and the applied drying room structure. As long as the balance of air temperature and air humidity in the drying room can be achieved, It is sufficient to avoid insufficient or excessive humidification, and the specific determination means is not limited in this embodiment.
步骤106：在实时空气湿度不小于湿度上限阈值时，执行步骤107的第三控制过程。Step 106: When the real-time air humidity is not less than the humidity upper limit threshold, perform the third control process of Step 107.
步骤107：控制喷水装置停止喷水。Step 107: Control the water spraying device to stop spraying water.
实时空气湿度不小于湿度上限阈值，烘干房内空气湿度较高，为提高回潮效果，避免过度回潮影响烟草品质，控制喷水装置停止喷水。The real-time air humidity is not less than the humidity upper threshold, and the air humidity in the drying room is relatively high. In order to improve the moisture regain effect and avoid excessive moisture regain affecting the tobacco quality, the water spray device is controlled to stop spraying water.
采用该实施例的烟草烘干方法，在回潮控制过程中，在实时空气湿度较小的情况下，控制喷水装置向热泵烘干机的室内热交换器的表面喷水，风道中的循环空气经过室内热交换器时被加湿，而且，由于室内热交换器距离烘干房的循环空气入口有一定距离，加湿后的空气在经风道及烘干房的循环空气入口进入烘干房时空气中的水分颗粒非常小，几乎全为雾状，不会在烟草表面产生斑点，提升烟草品质；由于回潮过程为通过喷水装置实现可控回潮，回潮效率高，可靠性强。而且，喷水速度根据实时空气湿度及实时空气温度变化，在实时空气湿度较小时，喷水速度最大，热泵烘干机制热运行，利用室内热交换器的热量加快水分蒸发，以较快的速度进行加湿回潮，提高回潮效率；在实时空气湿度适中时，根据实时空气温度调控喷水速度，实现烘干房内空气温度与空气湿度的均衡，且避免过度加湿或加湿不足，进一步提升烟草回潮的效率和可靠性。Using the tobacco drying method of this embodiment, in the moisture regain control process, when the real-time air humidity is low, the water spray device is controlled to spray water on the surface of the indoor heat exchanger of the heat pump dryer, and the circulating air in the air duct It is humidified when passing through the indoor heat exchanger, and since the indoor heat exchanger is at a certain distance from the circulating air inlet of the drying room, the humidified air enters the drying room through the air duct and the circulating air inlet of the drying room. The moisture particles in the tobacco are very small, almost all in the form of mist, which will not produce spots on the surface of the tobacco, improving the quality of the tobacco; because the moisture regaining process is controlled by a water spray device, the moisture regaining efficiency is high and the reliability is strong. Moreover, the water spraying speed changes according to the real-time air humidity and real-time air temperature. When the real-time air humidity is small, the water spraying speed is the largest, and the heat pump dryer runs hot, and the heat of the indoor heat exchanger is used to speed up the evaporation of water at a faster speed. Humidify and re-moisturize to improve the efficiency of re-moisturizing; when the real-time air humidity is moderate, the water spray speed is regulated according to the real-time air temperature, so as to achieve a balance between the air temperature and air humidity in the drying room, and avoid excessive or insufficient humidification. Efficiency and reliability.
在其他一些优选实施例中，在回潮控制过程中，控制热泵烘干机中的风机以最高转速正向运转，以加快烘干房内空气流动，提高回潮效率。In some other preferred embodiments, during the moisture regain control process, the fan in the heat pump dryer is controlled to run forward at the highest speed, so as to speed up the air flow in the drying room and improve the moisture regain efficiency.
回潮控制过程的结束，可以采用多种手段实现。作为一种优选实施方式，在第二控制过程的持续时间达到设定回潮时间阈值时，退出回潮控制过程，以避免过度回潮或者回潮不足。The end of the moisture regain control process can be realized by various means. As a preferred embodiment, when the duration of the second control process reaches the set reconditioning time threshold, the reconditioning control process is exited to avoid excessive reconditioning or insufficient reconditioning.
在其他一些优选实施例中，在第二控制过程中，根据烘干房内的实时空气温度确定喷水速度，采用下述过程执行：In some other preferred embodiments, in the second control process, the water spraying speed is determined according to the real-time air temperature in the drying room, and the following process is used to execute:
获取烘干房内的实时空气温度，并与设定温度阈值作比较。Get the real-time air temperature in the drying room and compare it with the set temperature threshold.
若实时空气温度小于设定温度阈值，根据第一关系和实时空气温度变化率确定喷水速度； 若实时空气温度不小于设定温度阈值，根据第二关系和实时空气温度变化率确定喷水速度。 If the real-time air temperature is less than the set temperature threshold, the water spraying speed is determined according to the first relationship and the real-time air temperature change rate; if the real-time air temperature is not less than the set temperature threshold, the water spraying speed is determined according to the second relationship and the real-time air temperature change rate .
其中，在相同的实时空气温度变化率的条件下，根据第一关系确定的喷水速度的变化率大于根据第二关系确定的喷水速度的变化率。Wherein, under the condition of the same real-time air temperature change rate, the change rate of the water spray speed determined according to the first relationship is greater than the change rate of the water spray speed determined according to the second relationship.
在该优选实施例中，如果空气温度小于设定温度阈值，随着温度的变化，喷水速度的变化较大；如果空气温度不小于设定温度阈值，随着温度的变化，喷水速度的变化较小；由此，能够匹配不同温度下的水分蒸发能力的变化，以达到更优的回潮效果。In this preferred embodiment, if the air temperature is less than the set temperature threshold, the water spraying speed will vary greatly with the temperature change; if the air temperature is not less than the set temperature threshold, the water spraying speed will vary greatly with the temperature change. The change is small; thus, the change of water evaporation capacity at different temperatures can be matched to achieve a better moisture regain effect.
在上述各实施例的烟草烘干方法中，在回潮控制过程中，喷水装置向室内热交换器的表面喷水，利用水分的蒸发对烘干房进行回潮。在其他的一些实施例中，还可利用喷水装置向室内热交换器的表面喷水的特点实现对室内热交换器的清洗。In the tobacco drying methods of the above-mentioned embodiments, during the moisture regain control process, the water spray device sprays water on the surface of the indoor heat exchanger, and uses the evaporation of water to regain moisture in the drying room. In some other embodiments, the feature of spraying water on the surface of the indoor heat exchanger can also be used to clean the indoor heat exchanger.
图2所示为基于本发明烟草烘干方法另一个实施例的流程图，具体来说是对室内热交换器执行清洗的一个实施例的流程图。具体过程包括：FIG. 2 is a flow chart of another embodiment of the tobacco drying method according to the present invention, specifically, a flow chart of an embodiment of cleaning the indoor heat exchanger. The specific process includes:
步骤201：进入室内热交换器清洗的过程，控制热泵烘干机停止运行。Step 201 : enter the process of cleaning the indoor heat exchanger, and control the heat pump dryer to stop running.
步骤202：控制喷水装置向室内热交换器的表面喷水，同时控制热泵烘干机中的风机反向运转。Step 202 : control the water spray device to spray water on the surface of the indoor heat exchanger, and control the fan in the heat pump dryer to run in reverse at the same time.
喷水装置向室内热交换器的表面喷水，冲洗室内热交换器表面吸附的灰尘等杂质。同时，控制烘干机中的风机反向运转，且优选以高速反向运转，将热交换器表面的杂质吹落，同时避免杂质进入到烘干房内。The water spray device sprays water on the surface of the indoor heat exchanger to wash away impurities such as dust adsorbed on the surface of the indoor heat exchanger. At the same time, the fan in the dryer is controlled to run in reverse, preferably at a high speed, to blow off impurities on the surface of the heat exchanger and prevent impurities from entering the drying room.
在其他一些优选实施例中，在进入室内热交换器的清洗过程、控制热泵烘干机停止运行后，先控制风机反向运转，在风机反向运转的时间达到设定预清洗时间后，再控制喷水装置向室内热交换器的表面喷水。通过先控制风机反向运转设定预清洗时间，例如，先反向运转3min，将室内热交换器表面附着的较大异物杂质等吹落下来，然后在喷水清洗，能够进一步提高清洗效率，还能够减少水资源的消耗。In some other preferred embodiments, after entering the cleaning process of the indoor heat exchanger and controlling the heat pump dryer to stop running, the fan is first controlled to run in reverse, and after the reverse running time of the fan reaches the set pre-cleaning time, the The water spray device is controlled to spray water on the surface of the indoor heat exchanger. By first controlling the reverse operation of the fan to set the pre-cleaning time, for example, first reversing the operation for 3 minutes, blowing off the large foreign matter and impurities attached to the surface of the indoor heat exchanger, and then cleaning with water, which can further improve the cleaning efficiency. It can also reduce water consumption.
在其他一些优选实施例中，在喷水装置向室内热交换器的表面喷水的时间达到设定喷水清洗时间后，控制喷水装置停止喷水；在喷水装置停止喷水后，控制风机继续反向运转设定延迟时间，然后退出室内热交换器清洗的过程。通过预设的设定喷水清洗时间，例如，设定喷水清洗时间为10min，作为是否结束喷水清洗的控制参数，便于实现室内热交换器清洗的自动控制，提高清洗便利性。而在停止喷水后，控制风机继续反向运转设定延迟时间，例如，继续反向运转1min，实现风机延迟停机，以将热交换器表明的灰尘及水滴尽可能清理干净，提供清洗效率，也避免水滴附着在热交换器表面而影响热交换器的换热性能。In some other preferred embodiments, after the time that the water spray device sprays water on the surface of the indoor heat exchanger reaches the set water spray cleaning time, the water spray device is controlled to stop spraying water; after the water spray device stops spraying water, the control The fan continues to run in reverse for the set delay time, and then exits the process of cleaning the indoor heat exchanger. By presetting the water spray cleaning time, for example, setting the water spray cleaning time to 10 minutes, as a control parameter for whether to end the water spray cleaning, it is convenient to realize the automatic control of the cleaning of the indoor heat exchanger and improve the cleaning convenience. After the water spray is stopped, control the fan to continue to run in reverse to set the delay time. For example, continue to run in reverse for 1 min to realize the delayed shutdown of the fan, so as to clean the dust and water droplets indicated by the heat exchanger as much as possible and improve the cleaning efficiency. It also prevents water droplets from adhering to the surface of the heat exchanger and affecting the heat exchange performance of the heat exchanger.
是否启动室内热交换器的清洗，可以由使用者根据实际情况自行启动，也可以由烘干设备自动判断而启动。为提高设备自动化，优选由烘干设备自动进行判断。设备自动判断有多种可行的方法，譬如，在距离上次清洗时间达到设定间隔时间后，发出清洗提醒。为增加清洗判断的准确性，作为一种优选实施方式，采用下述方法判断是否执行室内换热器的清洗：Whether to start the cleaning of the indoor heat exchanger can be started by the user according to the actual situation, or it can be automatically judged by the drying equipment. In order to improve the automation of the equipment, it is preferable to make the judgment automatically by the drying equipment. There are many feasible methods for the equipment to automatically judge. For example, after the last cleaning time reaches the set interval time, a cleaning reminder is issued. In order to increase the accuracy of the cleaning judgment, as a preferred embodiment, the following method is used to judge whether to perform the cleaning of the indoor heat exchanger:
在风机正向运转过程中，获取风机的实时工作电流；During the forward running process of the fan, obtain the real-time working current of the fan;
在实时工作电流大于设定电流阈值并持续设定运行时间后，确定需执行室内热交换器清洗的过程；After the real-time working current is greater than the set current threshold and continues to set the running time, it is determined that the process of cleaning the indoor heat exchanger needs to be performed;
在确定需执行室内热交换器清洗的过程，且未处于回潮控制过程时，再执行进入室内热交换器清洗的过程。When it is determined that the process of cleaning the indoor heat exchanger needs to be performed, and the process is not in the moisture regain control process, the process of entering the indoor heat exchanger cleaning is performed again.
在该优选实施例中，风机正向运转的实时工作电流持续设定运行时间均大于设定电流阈值，判定室内换热器存在脏堵现象，则确定需要执行室内换热器清洗。但是，并非立即执行室内换热器的清洗，而是在未处于回潮控制时，再进行室内热交换器的清洗，避免清洗时风机反向运转无法送风进入到烘干房内而影响回潮效率。In this preferred embodiment, the continuous set running time of the real-time working current of the fan in forward operation is greater than the set current threshold, and it is determined that the indoor heat exchanger is dirty and blocked, and it is determined that the indoor heat exchanger needs to be cleaned. However, the cleaning of the indoor heat exchanger is not performed immediately, but the cleaning of the indoor heat exchanger is performed when the moisture regain control is not performed, so as to avoid the reverse operation of the fan during cleaning and the inability to supply air into the drying room and affect the moisture regain efficiency. .
图3和图4示出了基于本发明烟草烘干设备的一个实施例，其中，图3是该实施例的结构示意图，图4是图3部分结构的俯视示意图。FIG. 3 and FIG. 4 show an embodiment of the tobacco drying device according to the present invention, wherein FIG. 3 is a schematic structural diagram of the embodiment, and FIG. 4 is a top plan schematic view of a part of the structure of FIG.
如图3所示，该实施例的烟草烘干设备包括有热泵烘干机。具体的，热泵烘干机包括有室外机301和室内热交换器302，室外机301包括有压缩机、室外热交换器、节流阀、室外风机等，室外机301与室内热交换器器302通过制冷剂管路连接，形成制冷剂循环***。As shown in FIG. 3 , the tobacco drying equipment of this embodiment includes a heat pump dryer. Specifically, the heat pump dryer includes an outdoor unit 301 and an indoor heat exchanger 302, the outdoor unit 301 includes a compressor, an outdoor heat exchanger, a throttle valve, an outdoor fan, etc., and the outdoor unit 301 and the indoor heat exchanger 302 Connected by refrigerant pipelines to form a refrigerant circulation system.
烟草烘干设备用来对烘干房中的烟草进行烘干。具体的，烘干房306形成有烘干室和风道304，风道304和烘干室通过位于上部的送风口305和位于下部的回风口310连通。烘干室中设置有烟草支架308，带烘干的烟草309悬挂在烟草支架308上。室内热交换器302设置在风道304中，在风道304中、室内热交换器302的上方还设置有风机303，在风道304下端形成有排水口311。The tobacco drying equipment is used to dry the tobacco in the drying room. Specifically, the drying room 306 is formed with a drying room and an air duct 304, and the air duct 304 and the drying room communicate with the air supply port 305 at the upper part and the air return port 310 at the lower part. A tobacco support 308 is arranged in the drying chamber, and the dried tobacco 309 is suspended on the tobacco support 308 . The indoor heat exchanger 302 is installed in the air duct 304 , and a fan 303 is further installed in the air duct 304 above the indoor heat exchanger 302 , and a drain port 311 is formed at the lower end of the air duct 304 .
在热泵烘干机制热运行时，风机303正向运转，将烘干房中的送气从回风口310吸入到风道304中，然后再经送风口305送入烘干室内。从室外机301的压缩机流出的高温高压气态制冷剂进入室内热交换器302，制冷剂在室内热交换器302中放热，加热经过室内热交换器的空气，加热后的空气在风机303的作用下，从送风口305送入烘干室内，对烘干室内的烟草309进行烘干。When the heat pump dryer is running hot, the fan 303 runs forward, sucking the air in the drying room from the return air port 310 into the air duct 304, and then sending it into the drying room through the air supply port 305. The high-temperature and high-pressure gaseous refrigerant flowing out from the compressor of the outdoor unit 301 enters the indoor heat exchanger 302, and the refrigerant releases heat in the indoor heat exchanger 302 to heat the air passing through the indoor heat exchanger, and the heated air flows through the fan 303. Under the action, it is sent into the drying chamber from the air supply port 305, and the tobacco 309 in the drying chamber is dried.
热泵烘干机更具体的结构及工作原理为现有技术，在此不作具体阐述。The more specific structure and working principle of the heat pump dryer are in the prior art, and will not be described in detail here.
在该实施例中，烟草烘干设备还包括有空气湿度获取单元、喷水装置及控制单元。其中，空气湿度获取单元具体为设置在烘干房306的烘干室内的湿度传感器307，用来至少在回潮控制过程中检测并获取烘干房内的实时空气湿度。在其他一些实施例中，空气湿度获取单元也可以为湿球温度传感器，用来检测并获取实时空气湿度。控制单元（图中未示出），作为烟草烘干设备的控制器，用来完成烘干过程各个阶段的提醒、控制等工作。In this embodiment, the tobacco drying equipment further includes an air humidity acquisition unit, a water spray device and a control unit. The air humidity acquisition unit is specifically a humidity sensor 307 disposed in the drying room of the drying room 306, and is used to detect and acquire the real-time air humidity in the drying room at least during the moisture regain control process. In some other embodiments, the air humidity obtaining unit may also be a wet bulb temperature sensor, which is used to detect and obtain real-time air humidity. The control unit (not shown in the figure), as the controller of the tobacco drying equipment, is used to complete the reminder and control of each stage of the drying process.
对于喷水装置，其用于受控地向热泵烘干机的室内热交换器302的表面喷水，具体来说，是在控制单元的控制下向室内热交换器302的表面喷水。结合图4所示的俯视示意图，在该实施例中，喷水装置包括输水管路312，其输入端用来接收供水水源，譬如，连接水箱或自来水管道，接收来自水箱或自来水管道中的供水。在输水管路312中设置有可控阀313，其受控于控制单元，用于控制输水管路312是否输水。具体的，可控阀313为电磁阀。喷水装置还包括有布水器314和喷淋器315，其中，布水器314的进水端与输水管路312的输出端连通，而喷淋器315与布水器314的出水端连通。具体的，喷淋器315包括有多个喷淋头。利用布水器314和喷淋器315构成的结构，能够向室内热交换器的表面均匀、尽可能全覆盖地喷水。在其他一些实施例中，为增加喷水流速地精确可控性，还在喷水装置中设置水泵，并受控于控制单元。For the water spray device, it is used to spray water to the surface of the indoor heat exchanger 302 of the heat pump dryer in a controlled manner, specifically, to spray water to the surface of the indoor heat exchanger 302 under the control of the control unit. With reference to the schematic top view shown in FIG. 4 , in this embodiment, the water spray device includes a water delivery pipeline 312 , the input end of which is used to receive a water supply source, for example, connected to a water tank or a tap water pipeline, and receives water from the water tank or tap water pipeline. . A controllable valve 313 is provided in the water delivery pipeline 312, which is controlled by the control unit and used to control whether the water delivery pipeline 312 delivers water. Specifically, the controllable valve 313 is a solenoid valve. The water spray device also includes a water distributor 314 and a sprayer 315, wherein the water inlet end of the water distributor 314 is communicated with the output end of the water delivery pipeline 312, and the shower device 315 is communicated with the water outlet end of the water distributor 314. . Specifically, the shower 315 includes a plurality of shower heads. With the configuration of the water distributor 314 and the shower 315, water can be sprayed to the surface of the indoor heat exchanger as uniformly and as completely as possible. In some other embodiments, in order to increase the precise controllability of the water spraying flow rate, a water pump is also provided in the water spraying device and controlled by the control unit.
具有上述结构的烟草烘干设备，利用热泵烘干机、控制单元、喷水装置等，能够实现前述烟草烘干方法中的回潮控制过程、室内热交换器清洗过程，达到前述烟草烘干方法所能达到的技术效果。更具体的控制过程参见前述方法的描述。The tobacco drying equipment with the above structure can realize the moisture regain control process and the cleaning process of the indoor heat exchanger in the aforementioned tobacco drying method by using a heat pump dryer, a control unit, a water spray device, etc. technical effect that can be achieved. For more specific control process, please refer to the description of the aforementioned method.
以上实施例仅用以说明本发明的技术方案，而非对其进行限制；尽管参照前述实施例对本发明进行了详细的说明，对于本领域的普通技术人员来说，依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或替换，并不使相应技术方案的本质脱离本发明所要求保护的技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed in the present invention.

Claims (10)

  1. 一种烟草烘干方法，其特征在于，所述方法包括：A method for drying tobacco, wherein the method comprises:
    在回潮控制过程中，获取烘干房内的实时空气湿度；During the moisture regain control process, obtain the real-time air humidity in the drying room;
    在所述实时空气湿度小于湿度下限阈值时，执行下述的第一控制过程：When the real-time air humidity is less than the humidity lower limit threshold, the following first control process is performed:
    控制热泵烘干机运行制热模式，同时控制喷水装置以第一流速向所述热泵烘干机的室内热交换器的表面喷水；其中，所述第一流速为所述喷水装置的最大流速；The heat pump dryer is controlled to operate in a heating mode, and at the same time, the water spray device is controlled to spray water to the surface of the indoor heat exchanger of the heat pump dryer at a first flow rate; maximum flow rate;
    在所述实时湿度不小于所述湿度下限阈值且小于湿度上限阈值时，执行下述的第二控制过程：When the real-time humidity is not less than the humidity lower threshold and less than the humidity upper threshold, the following second control process is performed:
    控制所述喷水装置向所述室内热交换器的表面喷水，喷水速度根据烘干房内的实时空气温度确定；controlling the water spraying device to spray water on the surface of the indoor heat exchanger, and the water spraying speed is determined according to the real-time air temperature in the drying room;
    在所述实时湿度不小于所述湿度上限阈值时，执行下述的第三控制过程：When the real-time humidity is not less than the humidity upper limit threshold, the following third control process is performed:
    控制所述喷水装置停止喷水。The water spraying device is controlled to stop spraying water.
  2. 根据权利要求1所述的烟草烘干方法，其特征在于，在所述第二控制过程中，所述喷水速度根据烘干房内的实时空气温度确定，具体包括：The tobacco drying method according to claim 1, wherein, in the second control process, the water spraying speed is determined according to the real-time air temperature in the drying room, and specifically includes:
    获取烘干房内的所述实时空气温度；obtaining the real-time air temperature in the drying room;
    若所述实时空气温度小于设定温度阈值，根据第一关系和实时空气温度变化率确定所述喷水速度； If the real-time air temperature is less than the set temperature threshold, determining the water spraying speed according to the first relationship and the real-time air temperature change rate;
    若所述实时空气温度不小于所述设定温度阈值，根据第二关系和实时空气温度变化率确定所述喷水速度； If the real-time air temperature is not less than the set temperature threshold, determine the water spray speed according to the second relationship and the real-time air temperature change rate;
    其中，在相同的实时空气温度变化率的条件下，根据所述第一关系确定的所述喷水速度的变化率大于根据所述第二关系确定的所述喷水速度的变化率。Wherein, under the condition of the same real-time air temperature change rate, the change rate of the water spray speed determined according to the first relationship is greater than the change rate of the water spray speed determined according to the second relationship.
  3. 根据权利要求1所述的烟草烘干方法，其特征在于，所述方法还包括：The tobacco drying method according to claim 1, wherein the method further comprises:
    在所述回潮控制过程中，控制所述热泵烘干机中的风机以最高转速正向运转。During the moisture regain control process, the fan in the heat pump dryer is controlled to run forward at the highest rotational speed.
  4. 根据权利要求1所述的烟草烘干方法，其特征在于，在所述第二控制过程的持续时间达到设定回潮时间阈值时，退出所述回潮控制过程。The tobacco drying method according to claim 1, characterized in that, when the duration of the second control process reaches a set moisture regain time threshold, the moisture regain control process is exited.
  5. 根据权利要求1至4中任一项所述的烟草烘干方法，其特征在于，所述方法还包括执行室内热交换器清洗的过程；The tobacco drying method according to any one of claims 1 to 4, wherein the method further comprises a process of cleaning the indoor heat exchanger;
    所述室内热交换器清洗的过程具体包括：The process of cleaning the indoor heat exchanger specifically includes:
    进入所述室内热交换器清洗的过程，控制热泵烘干机停止运行；Enter the process of cleaning the indoor heat exchanger, and control the heat pump dryer to stop running;
    控制所述喷水装置向所述室内热交换器的表面喷水，同时控制所述热泵烘干机中的风机反向运转。The water spraying device is controlled to spray water to the surface of the indoor heat exchanger, and at the same time, the fan in the heat pump dryer is controlled to run in reverse.
  6. 根据权利要求5所述的烟草烘干方法，其特征在于，所述室内热交换器清洗的过程还包括：The tobacco drying method according to claim 5, wherein the process of cleaning the indoor heat exchanger further comprises:
    在控制所述热泵烘干机停止运行后，先控制所述风机反向运转；After controlling the heat pump dryer to stop running, firstly control the fan to run in reverse;
    在所述风机反向运转的时间达到设定预清洗时间后，再控制所述喷水装置向所述室内热交换器的表面喷水。After the reverse running time of the fan reaches the preset pre-cleaning time, the water spraying device is controlled to spray water on the surface of the indoor heat exchanger.
  7. 根据权利要求5所述的烟草烘干方法，其特征在于，所述室内热交换器清洗的过程还包括：The tobacco drying method according to claim 5, wherein the process of cleaning the indoor heat exchanger further comprises:
    在所述喷水装置向所述室内热交换器的表面喷水的时间达到设定喷水清洗时间后，控制所述喷水装置停止喷水；After the time that the water spray device sprays water on the surface of the indoor heat exchanger reaches the set water spray cleaning time, controlling the water spray device to stop spraying water;
    在所述喷水装置停止喷水后，控制所述风机继续反向运转设定延迟时间，然后退出所述室内热交换器清洗的过程。After the water spraying device stops spraying water, the fan is controlled to continue to run in reverse to set a delay time, and then the process of cleaning the indoor heat exchanger is exited.
  8. 根据权利要求5至7中任一项所述的烟草烘干方法，其特征在于，所述方法还包括：The tobacco drying method according to any one of claims 5 to 7, wherein the method further comprises:
    在所述风机正向运转过程中，获取所述风机的实时工作电流；During the forward running process of the fan, obtain the real-time working current of the fan;
    在所述实时工作电流大于设定电流阈值并持续设定运行时间后，确定需执行所述室内热交换器清洗的过程；After the real-time working current is greater than the set current threshold and continues for the set running time, it is determined that the process of cleaning the indoor heat exchanger needs to be performed;
    在确定需执行所述室内热交换器清洗的过程，且未处于所述回潮控制过程时，再执行所述进入所述室内热交换器清洗的过程。When it is determined that the process of cleaning the indoor heat exchanger needs to be performed and is not in the moisture regain control process, the process of entering the indoor heat exchanger for cleaning is performed again.
  9. 一种烟草烘干设备，包括热泵烘干机，其特征在于，还包括：A tobacco drying device, comprising a heat pump dryer, is characterized in that, further comprising:
    空气湿度获取单元，用于至少在回潮控制过程中获取烘干房内的实时空气湿度；an air humidity acquisition unit, used to acquire the real-time air humidity in the drying room at least during the moisture regain control process;
    喷水装置，用于受控地向所述热泵烘干机的室内热交换器的表面喷水；a water spray device for controlled spraying of water to the surface of the indoor heat exchanger of the heat pump dryer;
    控制单元，至少用于在回潮控制过程中，在所述实时空气湿度小于湿度下限阈值时，执行下述的第一控制过程：The control unit is at least configured to perform the following first control process when the real-time air humidity is less than the humidity lower limit threshold during the moisture regain control process:
    控制热泵烘干机运行制热模式，同时控制所述喷水装置以第一流速向所述室内热交换器的表面喷水；其中，所述第一流速为所述喷水装置的最大流速；Controlling the heat pump dryer to operate in a heating mode, while controlling the water spray device to spray water to the surface of the indoor heat exchanger at a first flow rate; wherein the first flow rate is the maximum flow rate of the water spray device;
    还用于在所述实时湿度不小于所述湿度下限阈值且小于湿度上限阈值时，执行下述的第二控制过程：It is also used to execute the following second control process when the real-time humidity is not less than the lower humidity threshold and less than the humidity upper threshold:
    控制所述喷水装置向所述室内热交换器的表面喷水，喷水速度根据烘干房内的实时空气温度确定；controlling the water spraying device to spray water on the surface of the indoor heat exchanger, and the water spraying speed is determined according to the real-time air temperature in the drying room;
    还用于在所述实时湿度不小于所述湿度上限阈值时，执行下述的第三控制过程：It is also used for executing the following third control process when the real-time humidity is not less than the humidity upper limit threshold:
    控制所述喷水装置停止喷水。The water spraying device is controlled to stop spraying water.
  10. 根据权利要求9所述的烟草烘干设备，其特征在于，所述喷水装置包括：The tobacco drying equipment according to claim 9, wherein the water spraying device comprises:
    输水管路，其输入端用来接收供水水源；The water delivery pipeline, the input end of which is used to receive the water supply source;
    可控阀，其设置在所述输水管路中，受控于所述控制单元；a controllable valve, which is arranged in the water delivery pipeline and controlled by the control unit;
    布水器，其进水端与所述输水管路的输出端连通；a water distributor, the water inlet end of which is communicated with the output end of the water delivery pipeline;
    喷淋器，其与所述布水器的出水端连通，用于向所述室内热交换器的表面喷水。A sprayer, which is communicated with the water outlet end of the water distributor, is used for spraying water to the surface of the indoor heat exchanger.
PCT/CN2022/079896 2021-04-30 2022-03-09 Tobacco drying device and tobacco drying method WO2022227871A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110483917.1A CN113137839B (en) 2021-04-30 2021-04-30 Tobacco drying equipment and drying method
CN202110483917.1 2021-04-30

Publications (1)

Publication Number Publication Date
WO2022227871A1 true WO2022227871A1 (en) 2022-11-03

Family

ID=76816816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/079896 WO2022227871A1 (en) 2021-04-30 2022-03-09 Tobacco drying device and tobacco drying method

Country Status (2)

Country Link
CN (1) CN113137839B (en)
WO (1) WO2022227871A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113959189B (en) * 2021-10-15 2023-03-31 青岛海尔空调电子有限公司 Method and device for dampening, electronic equipment and storage medium

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH161304A (en) * 1930-11-07 1933-04-30 Caerrier Lufttechnische Ges M Process for moistening hygroscopic goods, in particular tobacco.
CN101619876A (en) * 2009-07-22 2010-01-06 广东志高空调有限公司 Integral type constant-temperature and constant-humidity machine
CN102345971A (en) * 2011-09-01 2012-02-08 江苏科地现代农业有限公司 Air source high-temperature heat pump dehumidification roasting device
CN104728934A (en) * 2013-12-20 2015-06-24 丰田自动车株式会社 Air conditioning device and air conditioning control method
CN104729354A (en) * 2015-03-27 2015-06-24 广东美的暖通设备有限公司 Automatic condensing fin cleaning device and air conditioner with same
CN105020832A (en) * 2015-07-14 2015-11-04 西安工程大学 Integrated air conditioning unit suitable for interior of subway train
CN105318452A (en) * 2014-08-05 2016-02-10 青岛海信日立空调***有限公司 Air conditioning outdoor unit and method for washing heat exchanger
CN106545937A (en) * 2016-11-15 2017-03-29 河南华东工控技术有限公司 Air conditioning system and control method between spinning
CN111053275A (en) * 2020-01-04 2020-04-24 河南农业大学 Air source heat pump drying room of fresh-keeping humidification of intelligence
CN212117042U (en) * 2019-12-27 2020-12-11 许昌智工机械制造有限公司 Tobacco leaf drying condensate water recycling device
CN112229236A (en) * 2020-11-18 2021-01-15 珠海格力电器股份有限公司 Cooling tower and refrigeration system
CN112378030A (en) * 2020-08-04 2021-02-19 氧知元医疗科技（上海）有限公司 Constant oxygen and constant humidity intelligent integrated control system and working method thereof
CN112524779A (en) * 2020-11-24 2021-03-19 青岛海尔空调器有限总公司 Humidity control method and device, air conditioner and storage medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8601448A1 (en) * 1984-12-20 1985-11-01 Vieitez Rodriguez Manuel Heat transfer system for tobacco curing
CN205757132U (en) * 2016-05-23 2016-12-07 广州能之原科技股份有限公司 A kind of drying automatic humidification gets damp again system
CN106766547A (en) * 2017-01-09 2017-05-31 广州美的华凌冰箱有限公司 The method and apparatus of air humidifying device, refrigerator, monitoring and treatment room air
CN106839212B (en) * 2017-02-22 2020-08-25 青岛海尔空调器有限总公司 Air conditioning system and air conditioning control method
CN210642404U (en) * 2019-09-29 2020-06-02 征图新视(江苏)科技股份有限公司 Heating and moisture regaining device for preventing broken stalks of large-leaf crops

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH161304A (en) * 1930-11-07 1933-04-30 Caerrier Lufttechnische Ges M Process for moistening hygroscopic goods, in particular tobacco.
CN101619876A (en) * 2009-07-22 2010-01-06 广东志高空调有限公司 Integral type constant-temperature and constant-humidity machine
CN102345971A (en) * 2011-09-01 2012-02-08 江苏科地现代农业有限公司 Air source high-temperature heat pump dehumidification roasting device
CN104728934A (en) * 2013-12-20 2015-06-24 丰田自动车株式会社 Air conditioning device and air conditioning control method
CN105318452A (en) * 2014-08-05 2016-02-10 青岛海信日立空调***有限公司 Air conditioning outdoor unit and method for washing heat exchanger
CN104729354A (en) * 2015-03-27 2015-06-24 广东美的暖通设备有限公司 Automatic condensing fin cleaning device and air conditioner with same
CN105020832A (en) * 2015-07-14 2015-11-04 西安工程大学 Integrated air conditioning unit suitable for interior of subway train
CN106545937A (en) * 2016-11-15 2017-03-29 河南华东工控技术有限公司 Air conditioning system and control method between spinning
CN212117042U (en) * 2019-12-27 2020-12-11 许昌智工机械制造有限公司 Tobacco leaf drying condensate water recycling device
CN111053275A (en) * 2020-01-04 2020-04-24 河南农业大学 Air source heat pump drying room of fresh-keeping humidification of intelligence
CN112378030A (en) * 2020-08-04 2021-02-19 氧知元医疗科技（上海）有限公司 Constant oxygen and constant humidity intelligent integrated control system and working method thereof
CN112229236A (en) * 2020-11-18 2021-01-15 珠海格力电器股份有限公司 Cooling tower and refrigeration system
CN112524779A (en) * 2020-11-24 2021-03-19 青岛海尔空调器有限总公司 Humidity control method and device, air conditioner and storage medium

Also Published As

Publication number Publication date
CN113137839A (en) 2021-07-20
CN113137839B (en) 2023-02-24

Similar Documents

Publication Publication Date Title
WO2019144675A1 (en) Control method and apparatus for air conditioner
WO2018086175A1 (en) Method for cleaning indoor unit and outdoor unit of air conditioner
WO2019020021A1 (en) Air conditioner indoor unit
CN110173826A (en) The self cleaning method and computer readable storage medium of air conditioner, indoor heat exchanger
CN107202386A (en) Combined constant constant temperature and humidity controls wind cabinet and without dew point control method
CN107514682A (en) Air conditioner room unit with self-cleaning function
JPH0150824B2 (en)
CN101799695B (en) Control method of adsorption and dehumidification control system of cold well of high-low temperature test chamber
WO2023115900A1 (en) Control method for drying system, and drying system
WO2022227871A1 (en) Tobacco drying device and tobacco drying method
CN110986195A (en) Fresh air conditioner for coating workshop and constant temperature and humidity control method thereof
CN207299314U (en) Combined constant constant temperature and humidity controls wind cabinet
CN104990227A (en) Control method for energy-saving type refrigeration dehumidifying machine
CN211400104U (en) Fresh air conditioner for coating workshop
CN205757132U (en) A kind of drying automatic humidification gets damp again system
CN103968658A (en) Drying device by adopting water circulation heating of air source heat pump and water circulation condensation and dehumidification
CN204853780U (en) Fresh air energy-saving processing system in temperature and humidity independent processing air conditioning system
JPH10227483A (en) Air conditioner
CN110044013A (en) Humidifying controlling method and device, air regulator and computer readable storage medium
CN210089057U (en) Energy-saving type full fresh air conditioning unit control system
CN105823179B (en) A kind of clean air conditioner waits for the energy-saving control method and control system in production stage
CN113669806B (en) Self-adaptive control method for finned tube type coating dehumidification unit
JP2017219231A (en) Method for controlling water/air contact type air conditioner, water/air contact type air conditioner, controller for water/air contact type air conditioner, and control program for water/air contact type air conditioner
JP2000346429A (en) Dehumidifying and drying system for bathroom
JP4689179B2 (en) air conditioner

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22794350

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22794350

Country of ref document: EP

Kind code of ref document: A1