Directly heated drying belt drying room all-in-one machine

Abstract

The present application relates to the technical field of dehumidification drying, and particularly relates to a direct heating drying belt drying room all-in-one machine, which is characterized by a machine body, a feature extraction module, a feature analysis module and a control module. The machine body is provided with a drying room, a heat exchange cavity and a condensation cavity. The humidity monitoring unit is used to obtain the humidity parameter of the surface of the dehumidification evaporator. The flow monitoring unit is used to obtain the gas flow parameter entering the dehumidification evaporator. The feature analysis module is used to draw a humidity change curve, screen the abnormal interval section of the operation efficiency of the dehumidification evaporator, and determine the abnormal category of the operation efficiency abnormal interval section. The control module is used to select the operation adjustment mode. Thus, the surface of the evaporator is monitored in real time and adjusted adaptively, and the dehumidification effect of the drying system and the reliability of the equipment operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dehumidification drying, in particular to a direct heating drying and drying room integrated machine. BACKGROUND

[0002] With the continuous expansion of industrial production scale, large-scale production has higher and higher requirements for material drying, and it is necessary to integrate the drying equipment with the drying room. The air is heated directly by the heating element, and then the hot air is sent into the drying room to dry the materials. This drying method can quickly increase the temperature in the drying room and shorten the drying time. With the continuous development of computer technology and automation technology, the control system of the direct heating drying and drying room integrated machine is becoming more and more intelligent. By using advanced sensor technology and control algorithm, real-time monitoring and automatic control of the drying process can be realized, and the drying quality and production efficiency can be improved. However, the direct heating drying and drying room integrated machine is a relatively complex system, which works collaboratively with multiple components. During long-term operation, component failures and unstable system operation may occur. The performance decline or failure of key components such as compressors, evaporators, and condensers can affect the normal operation of the entire drying system and reduce the reliability and service life of the equipment. Therefore, real-time monitoring of key components and adaptive adjustment of subsequent cooperating components during the operation of the direct heating drying and drying room integrated machine are current technical problems to be solved.

[0003] For example, Chinese patent application publication No. CN116576659A discloses a drying machine dehumidification control method and a drying machine, aiming to solve the problem that the heat load of the existing drying machine's internal dehumidification module is greatly affected by different temperature sections' dehumidification requirements, and the single refrigerant flow path is used to supply refrigerant to the internal dehumidification module, which limits the dehumidification capacity. To this end, the drying machine dehumidification control method includes: in the case that the first refrigeration and heating circulation system enters the dehumidification mode, based on the results of comparing the difference T1 with the first and second preset difference values and the result of comparing the difference T2 with the third preset difference value, selectively controlling the second refrigeration and heating circulation system to enter one of the heating mode, the dehumidification mode, and the closed mode. The invention can select single-system dehumidification or double-system dehumidification according to the size of the dehumidification amount, which helps to save resources.

[0004] The existing technology also has the following problems:

[0005] The existing technology does not consider that the condensation on the surface of the evaporator during the operation of the direct heating drying and drying room integrated machine will affect the dehumidification effect of the evaporator. The existing technology cannot monitor the surface of the evaporator in real time and adaptively adjust it, which affects the dehumidification effect and the normal operation of the entire drying system, and reduces the reliability of the equipment. SUMMARY

[0006] To this end, the application provides a direct heating drying belt drying room all-in-one machine to overcome the problem that the prior art cannot monitor the surface of the evaporator in real time and adaptively adjust during the operation of the drying all-in-one machine.

[0007] To achieve the above-mentioned purpose, the application provides a direct heating drying belt drying room all-in-one machine, comprising:

[0008] a machine body comprising a drying room, a heat exchange cavity and a condensation cavity;

[0009] wherein the drying room is provided with a plurality of material tray racks for placing materials to be dried;

[0010] the heat exchange cavity is provided with a core heat exchanger for heat exchange of gas and a dehumidification evaporator for condensing moisture in the gas into condensed water;

[0011] the condensation cavity is provided with a condenser for heating the gas and a circulating fan for circulating the gas in the machine body;

[0012] a feature extraction module is arranged in the heat exchange cavity, comprising a humidity monitoring unit for obtaining the humidity parameter of the surface of the dehumidification evaporator and a flow monitoring unit for obtaining the gas flow parameter entering the dehumidification evaporator;

[0013] a feature analysis module connected with the feature extraction module is used to draw a humidity change curve of the humidity parameter changing with the gas flow parameter, screen an operation efficiency abnormal interval section of the dehumidification evaporator according to the humidity change curve information, and determine the abnormal category of the operation efficiency abnormal interval section;

[0014] wherein the humidity change curve information comprises the slope of a plurality of data points on the humidity change curve and the corresponding humidity;

[0015] a control module connected with the feature analysis module and the heat exchange cavity is used to select an operation adjustment mode based on the abnormal category, comprising,

[0016] adjusting the operation power of the circulating fan according to the slope corresponding to each data point in the operation efficiency abnormal interval section;

[0017] or, issuing an abnormal alarm prompt.

[0018] Further, the feature analysis module is used to draw a humidity change curve, wherein,

[0019] the feature analysis module obtains the humidity parameter of the surface of the dehumidification evaporator and the gas flow parameter entering the dehumidification evaporator;

[0020] A rectangular coordinate system is established with the gas flow parameter into the dehumidification evaporator as the horizontal axis and the humidity of the surface of the dehumidification evaporator as the vertical axis.

[0021] Further, the feature analysis module is used to divide the humidity change curve, wherein,

[0022] The humidity change curve is divided into a plurality of operation interval segments at preset gas flow intervals; the number of data points in the operation interval segment that do not meet the operation stability condition is obtained, the operation stability condition being that the slope of the data point does not exceed a preset slope threshold.

[0023] Further, the feature analysis module is used to screen the operation effectiveness abnormal interval segment of the dehumidification evaporator, wherein,

[0024] If the number of data points in the operation interval segment that do not meet the operation stability condition does not meet the operation effectiveness normal condition, the feature analysis module determines that the operation interval segment is an operation effectiveness abnormal interval segment;

[0025] If the number of data points in the operation interval segment that do not meet the operation stability condition meets the operation effectiveness normal condition, the feature analysis module determines that the operation interval segment is not an operation effectiveness abnormal interval segment.

[0026] Further, the operation effectiveness normal condition is that the proportion of the number of data points in the operation interval segment that do not meet the operation stability condition in the total number of data points in the operation interval segment does not exceed a preset proportion threshold.

[0027] Further, the feature analysis module is used to determine the abnormal category of the operation effectiveness abnormal interval segment, wherein,

[0028] If the humidity and the gas flow value corresponding to the data points in the operation effectiveness abnormal interval segment meet the operation effectiveness dominant condition, the feature analysis module determines that the abnormal category of the operation effectiveness abnormal interval segment is an operation effectiveness dominant abnormal category;

[0029] If the humidity and the gas flow corresponding to the data points in the operation effectiveness abnormal interval segment do not meet the operation effectiveness dominant condition, the feature analysis module determines that the abnormal category of the operation effectiveness abnormal interval segment is an operation effectiveness non-dominant abnormal category.

[0030] Further, the operation effectiveness dominant condition is that the gas flow sorting and the humidity sorting of the data points are the same;

[0031] The gas flow sorting is the sorting of the gas flow values corresponding to the data points in the operation effectiveness abnormal interval segment from small to large in the horizontal coordinate direction.

[0032] The humidity sorting is a sorting of the humidity corresponding to the data points from large to small in the ordinate direction.

[0033] Further, the control module is used to select a running adjustment mode, wherein,

[0034] If the abnormality category is the non-explicit abnormality category of running efficiency, the control module selects the running adjustment mode as adjusting the running power of the circulating fan according to the slope corresponding to each data point in the running efficiency abnormal interval segment.

[0035] If the abnormality category is the explicit abnormality category of running efficiency, the control module selects the running adjustment mode as issuing an abnormality alarm prompt.

[0036] Further, the running power of the circulating fan and the efficiency characteristic value are in a negative correlation relationship, the control module obtains the absolute value of the difference between the slope corresponding to each data point in the running efficiency abnormal interval segment and the slope threshold value, and determines the average value of the absolute value as the efficiency characteristic value.

[0037] Further, the condensing cavity further comprises an electric heating pipe used to heat gas.

[0038] Compared with the prior art, the present application has the beneficial effects that the present application is provided with a body, a feature extraction module, a feature analysis module, a control module, the body is provided with a drying room, a heat exchange cavity and a condensing cavity, the humidity parameter of the surface of the dehumidification evaporator is obtained through the humidity monitoring unit, the gas flow parameter entering the dehumidification evaporator is obtained through the flow monitoring unit, the humidity change curve is drawn through the feature analysis module, the running efficiency abnormal interval segment of the dehumidification evaporator is screened, the abnormality category of the running efficiency abnormal interval segment is determined, the running adjustment mode is selected through the control module, and thus, the surface of the evaporator is monitored in real time and is adaptively adjusted, the dehumidification effect of the drying system and the reliability of the equipment operation are improved.

[0039] Especially, the humidity parameter of the dehumidification evaporator and the gas flow parameter entering the dehumidification evaporator are obtained by the feature extraction module, it can be understood that when the air flows through the dehumidification evaporator, the water vapor will condense into condensed water on the surface of the dehumidification evaporator due to the cold, and in this process, the state of the surface of the dehumidification evaporator will change, and the humidity parameter will also change accordingly, when the condensed water forms a water film with a certain thickness on the surface of the dehumidification evaporator, this layer of water film will affect the heat exchange between the dehumidification evaporator and the air like thermal resistance, by obtaining the humidity parameter of the dehumidification evaporator, the degree of obstruction of the water film to the performance of the dehumidification evaporator can be monitored in real time, the gas flow entering the dehumidification evaporator is closely related to the dehumidification efficiency, sufficient gas flow can ensure that more humid air contacts the evaporator, so that the water vapor can fully condense on the surface of the evaporator, by obtaining the gas flow parameter, the gas flow condition can be monitored in real time, and then the surface of the evaporator is monitored in real time, and the dehumidification effect of the drying system and the reliability of the equipment operation are improved.

[0040] Especially, the humidity parameter of the dehumidification evaporator and the gas flow parameter entering the dehumidification evaporator are obtained by the feature extraction module, it can be understood that when the air flows through the dehumidification evaporator, the water vapor will condense into condensed water on the surface of the dehumidification evaporator due to the cold, and in this process, the state of the surface of the dehumidification evaporator will change, and the humidity parameter will also change accordingly, when the condensed water forms a water film with a certain thickness on the surface of the dehumidification evaporator, this layer of water film will affect the heat exchange between the dehumidification evaporator and the air like thermal resistance, by obtaining the humidity parameter of the dehumidification evaporator, the degree of obstruction of the water film to the performance of the dehumidification evaporator can be monitored in real time, the gas flow entering the dehumidification evaporator is closely related to the dehumidification efficiency, sufficient gas flow can ensure that more humid air contacts the evaporator, so that the water vapor can fully condense on the surface of the evaporator, by obtaining the gas flow parameter, the gas flow condition can be monitored in real time, and then the surface of the evaporator is monitored in real time, and the dehumidification effect of the drying system and the reliability of the equipment operation are improved.

[0041] Especially, the humidity parameter of the dehumidification evaporator and the gas flow parameter entering the dehumidification evaporator are obtained by the feature extraction module, it can be understood that when the air flows through the dehumidification evaporator, the water vapor will condense into condensed water on the surface of the dehumidification evaporator due to the cold, and in this process, the state of the surface of the dehumidification evaporator will change, and the humidity parameter will also change accordingly, when the condensed water forms a water film with a certain thickness on the surface of the dehumidification evaporator, this layer of water film will affect the heat exchange between the dehumidification evaporator and the air like thermal resistance, by obtaining the humidity parameter of the dehumidification evaporator, the degree of obstruction of the water film to the performance of the dehumidification evaporator can be monitored in real time, the gas flow entering the dehumidification evaporator is closely related to the dehumidification efficiency, sufficient gas flow can ensure that more humid air contacts the evaporator, so that the water vapor can fully condense on the surface of the evaporator, by obtaining the gas flow parameter, the gas flow condition can be monitored in real time, and then the surface of the evaporator is monitored in real time, and the dehumidification effect of the drying system and the reliability of the equipment operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a structure schematic view of a direct heating drying belt drying room all-in-one machine of the embodiment of the present application;

[0043] Figure 2 The logic flow chart for the embodiment feature analysis module to screen the operation efficiency abnormal interval of the dehumidification evaporator is shown in the figure.

[0044] In the figure: 1-electric heating pipe; 2-evaporative dehumidification fan; 3-dehumidification evaporator; 4-compressor; 5-circulating fan; 6-condenser; 7-material tray rack; 8-core heat exchanger; 9-heat preservation plate; 10-outlet; 11-inlet; 12-material air door; 13-drying room. DETAILED DESCRIPTION

[0045] In order to make the purpose and advantages of the present application more clear, the present application will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0046] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application.

[0047] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship of “up”, “down”, “inner”, “outer” and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0048] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms “mounting” and “connection” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0049] Please refer to Figure 1 The figure is a structural schematic diagram of the direct heating drying and drying room integrated machine of the embodiment of the present application, the direct heating drying and drying room integrated machine of the present application comprises:

[0050] The machine body comprises a drying room 13, a heat exchange cavity and a condensation cavity;

[0051] Among them, the drying room 13 is provided with a plurality of material tray racks for placing materials to be dried;

[0052] The heat exchange cavity is provided with a core heat exchanger 8 for heat exchange of the gas, and a dehumidification evaporator 3 for condensing the moisture in the gas into condensed water;

[0053] The condensing cavity is provided with a condenser 6 for heating the gas, and a circulating fan 5 for circulating the gas in the machine body;

[0054] The feature extraction module is arranged in the heat exchange cavity, and includes a humidity monitoring unit for obtaining the humidity parameter of the surface of the dehumidification evaporator, and a flow monitoring unit for obtaining the gas flow parameter entering the dehumidification evaporator 3;

[0055] Specifically, the specific structure of the humidity monitoring unit is not limited in the present application, and preferably, the humidity monitoring unit can be a resistance type humidity sensor, which obtains the humidity parameter of the surface of the dehumidification evaporator by using the characteristic that the resistance value of the humidity-sensitive material changes with humidity, which will not be described here.

[0056] Specifically, the specific structure of the flow monitoring unit is not limited in the present application, and preferably, the flow monitoring unit can be a turbine flowmeter, which obtains the flow information of the gas by detecting the rotating speed of the turbine driven by the gas flowing through the turbine blades, which will not be described here.

[0057] Specifically, the feature extraction module of the present application obtains the humidity parameter of the dehumidification evaporator and the gas flow parameter entering the dehumidification evaporator, and it can be understood that when the air flows through the dehumidification evaporator, the water vapor will condense into condensed water on the surface of the dehumidification evaporator due to the cold, and in this process, the state of the surface of the dehumidification evaporator will change, and the humidity parameter will also change accordingly. When the condensed water forms a water film with a certain thickness on the surface of the dehumidification evaporator, this layer of water film will affect the heat exchange between the dehumidification evaporator and the air like a thermal resistance. By obtaining the humidity parameter of the dehumidification evaporator, the degree of hindering the performance of the dehumidification evaporator by the water film can be monitored in real time. The gas flow entering the dehumidification evaporator is closely related to the dehumidification efficiency. Sufficient gas flow can ensure that more humid air contacts the evaporator, so that the water vapor can fully condense on the surface of the evaporator. By obtaining the gas flow parameter, the gas flow condition can be monitored in real time, and then the surface of the evaporator can be monitored in real time, and the dehumidification effect of the drying system and the reliability of the equipment operation are improved.

[0058] The feature analysis module is connected with the feature extraction module, and is used for drawing a humidity change curve of the humidity parameter changing with the gas flow parameter, screening an abnormal interval section of the running efficiency of the dehumidification evaporator 3 according to the humidity change curve information, and determining the abnormal category of the abnormal interval section;

[0059] The humidity change curve information includes the slope of a plurality of data points on the humidity change curve and the corresponding humidity.

[0060] Specifically, the specific structure of the feature analysis module is not limited, preferably, it can be composed of a logic component, which can be a microprocessor and a processor used in a computer, etc., to draw a humidity change curve and determine the abnormal category of the operation efficiency abnormal interval section, which will not be repeated here.

[0061] The control module is connected with the feature analysis module and the heat exchange cavity, and is used to select an operation adjustment mode based on the abnormal category, including,

[0062] Adjusting the operation power of the circulating fan 5 according to the slope corresponding to each data point in the operation efficiency abnormal interval section;

[0063] Or, issuing an abnormal alarm prompt.

[0064] Specifically, the specific structure of the control module is not limited, preferably, it can be composed of a logic component, which can be a microprocessor and a processor used in a computer, etc., to select an operation adjustment mode according to the abnormal category, which will not be repeated here.

[0065] Specifically, the body further comprises a heat preservation plate 8 for maintaining the temperature in the body, and an evaporative dehumidification fan 2 arranged on the side wall of the body for dehumidification;

[0066] A material wind blocking door 12 is arranged at the bottom of the drying room to block hot air.

[0067] In the embodiment of the present application, the heat preservation plate 8 is made of 50-thick polyurethane heat preservation plate, which seals the space by using 50-thick polyurethane heat insulation plate, reduces heat energy loss, and efficiently utilizes heat energy utilization rate. The condenser adopts a micro-channel structure to improve thermal efficiency.

[0068] Specifically, the feature analysis module is used to draw a humidity change curve, wherein,

[0069] The feature analysis module obtains the humidity parameter of the surface of the dehumidification evaporator 3 and the gas flow parameter entering the dehumidification evaporator;

[0070] The gas flow parameter entering the dehumidification evaporator is taken as the horizontal axis, and the humidity of the surface of the dehumidification evaporator is taken as the vertical axis to establish a rectangular coordinate system.

[0071] Specifically, the feature analysis module is used to divide the humidity change curve, wherein,

[0072] The humidity change curve is divided into several operation interval segments at preset gas flow intervals; the number of data points that do not meet the operation stability condition is obtained, the operation stability condition being that the slope of the data points does not exceed a preset slope threshold.

[0073] Preferably, the preset gas flow interval can be 150m 3 .

[0074] Specifically, the preset slope threshold can be set by a person skilled in the art according to the average value of several times of historical data, and preferably, the slope threshold can be -1.

[0075] Specifically, please refer to Figure 2 The feature analysis module is used to screen the operation effectiveness abnormal interval segment of the dehumidification evaporator 3, wherein,

[0076] If the number of data points that do not meet the operation stability condition in the operation interval segment does not meet the operation effectiveness normal condition, the feature analysis module determines that the operation interval segment is an operation effectiveness abnormal interval segment.

[0077] If the number of data points that do not meet the operation stability condition in the operation interval segment meets the operation effectiveness normal condition, the feature analysis module determines that the operation interval segment is not an operation effectiveness abnormal interval segment.

[0078] Specifically, the operation effectiveness normal condition is that the proportion of the number of data points that do not meet the operation effectiveness normal condition in the total number of data points in the operation interval segment does not exceed a preset proportion threshold.

[0079] Specifically, the preset proportion threshold can be set by a person skilled in the art according to the average value of several times of historical data, and preferably, the proportion threshold can be 0.6.

[0080] Specifically, the feature analysis module is used to determine the abnormal category of the operation effectiveness abnormal interval segment, wherein,

[0081] If the humidity and the gas flow value corresponding to the data points in the operation effectiveness abnormal interval segment meet the operation effectiveness dominant condition, the feature analysis module determines that the abnormal category of the operation effectiveness abnormal interval segment is an operation effectiveness dominant abnormal category.

[0082] If the humidity and the gas flow corresponding to the data points in the operation effectiveness abnormal interval segment do not meet the operation effectiveness dominant condition, the feature analysis module determines that the abnormal category of the operation effectiveness abnormal interval segment is an operation effectiveness non-dominant abnormal category.

[0083] Specifically, the operation effectiveness explicit condition is that the gas flow ordering corresponding to the data points is the same as the humidity ordering;

[0084] The gas flow ordering is ordering the gas flow values corresponding to the data points in the operation effectiveness abnormal interval segment from small to large in the horizontal coordinate direction.

[0085] The humidity ordering is ordering the humidity corresponding to the data points from large to small in the vertical coordinate direction.

[0086] Specifically, the application determines the abnormal category of the operation effectiveness abnormal interval segment through the humidity change curve of the humidity parameter changing with the gas flow parameter. It can be understood that when the humidity and the gas flow corresponding to the data points in the operation effectiveness abnormal interval segment meet the operation effectiveness explicit condition, the gas flow ordering corresponding to the data points in the operation effectiveness abnormal interval segment is the same as the humidity ordering, which represents that the accumulation of the condensate water on the surface of the dehumidifying evaporator is continuously increasing, and the operation of the dehumidifying evaporator has a large fault. When the humidity and the gas flow corresponding to the data points in the operation effectiveness abnormal interval segment do not meet the operation effectiveness explicit condition, the gas flow ordering corresponding to the data points in the operation effectiveness abnormal interval segment is not the same as the humidity ordering, which represents that the accumulation of the condensate water on the surface of the dehumidifying evaporator is not continuously increasing, and the influence caused by the current link can be compensated by adjusting the circulation rate of the gas in the device. Thus, the surface of the evaporator is monitored in real time and adjusted adaptively, and the dehumidifying effect of the drying system and the reliability of the equipment operation are improved.

[0087] Specifically, the control module is used to select an operation adjustment mode, wherein,

[0088] If the abnormal category is the operation effectiveness non-explicit abnormal category, the control module selects the operation adjustment mode as adjusting the operation power of the circulating fan 5 according to the slope corresponding to each data point in the operation effectiveness abnormal interval segment.

[0089] If the abnormal category is the operation effectiveness explicit abnormal category, the control module selects the operation adjustment mode as issuing an abnormal alarm prompt.

[0090] Specifically, the application adjusts the operation power of the circulating fan to perform operation adjustment. It can be understood that when the power of the circulating fan is reduced, the flow rate of the gas in the device is slowed down, the time of the gas staying on the surface of the dehumidifying evaporator is increased, and the gas has more time to exchange heat with the dehumidifying evaporator, thereby reducing the influence of the water film formed by the condensate water on the surface of the dehumidifying evaporator on heat exchange. Thus, the surface of the evaporator is monitored in real time and adjusted adaptively, and the dehumidifying effect of the drying system and the reliability of the equipment operation are improved.

[0091] Specifically, the operating power of the circulating fan 5 is negatively correlated with the efficiency characteristic value, the control module obtains the absolute value of the difference between the slope corresponding to each data point in the operating efficiency abnormal interval section and the slope threshold value, and determines the average value of the absolute value as the efficiency characteristic value.

[0092] Specifically, the condensing cavity further comprises an electric heating pipe 1 for heating gas.

[0093] Specifically, the gas flow path of the embodiment of the present application is that the gas enters the core heat exchanger 8 from the air inlet 11, enters the condenser 6 through the core heat exchanger 8, is blown into the drying room 13 through the circulating fan 5 and the electric heating pipe 1, the high-temperature gas heated by the electric heating pipe 1 dries the material through the material tray rack 7, the high-temperature and high-humidity gas after absorbing the moisture of the material enters the core heat exchanger 8 for heat exchange and waste heat recovery, passes through the dehumidification evaporator 3, and the wet gas is discharged through the evaporative exhaust fan 2, so that the direct heating drying and drying room integrated machine is realized, the material damper 12 is closed when the material is replaced, and heat loss is avoided; the refrigerant gas enters the condenser 6 from the compressor 4, enters the dehumidification evaporator 3 from the condenser 6, and is circulated repeatedly.

[0094] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

[0095] The above description is only the preferred embodiments of the present application and is not used to limit the present application; for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A direct heating drying belt drying room all-in-one machine, characterized in that, The application relates to a drying machine. The drying machine comprises a machine body, a heat exchange chamber and a condensation chamber. The machine body comprises a drying room, a plurality of material tray racks arranged in the drying room for placing materials to be dried, a core heat exchanger arranged in the heat exchange chamber for exchanging heat with gas, a dehumidification evaporator arranged in the heat exchange chamber for condensing water in the gas into condensed water, a condenser arranged in the condensation chamber for heating the gas, and a circulating fan arranged in the condensation chamber for circulating the gas in the machine body. The drying machine further comprises a feature extraction module arranged in the heat exchange chamber, a humidity monitoring unit arranged in the feature extraction module for acquiring a humidity parameter of a surface of the dehumidification evaporator, and a flow monitoring unit arranged in the feature extraction module for acquiring a gas flow parameter of the dehumidification evaporator. The drying machine further comprises a feature analysis module connected to the feature extraction module, a humidity change curve of the humidity parameter with respect to the gas flow parameter is drawn based on the humidity parameter and the gas flow parameter, an abnormal interval of the dehumidification evaporator is screened based on the humidity change curve, and an abnormal category of the abnormal interval is determined. The humidity change curve comprises a plurality of data points on the humidity change curve and corresponding humidity. The drying machine further comprises a control module connected to the feature analysis module and the heat exchange chamber, an operation adjustment mode is selected based on the abnormal category, the operation adjustment mode comprises adjusting an operation power of the circulating fan based on a slope of each data point in the abnormal interval, or issuing an abnormal alarm. The feature analysis module draws the humidity change curve. The feature analysis module acquires the humidity parameter of the surface of the dehumidification evaporator and the gas flow parameter of the dehumidification evaporator. The feature analysis module divides the humidity change curve. The humidity change curve is divided into a plurality of operation intervals based on a preset gas flow interval, a number of data points not meeting an operation stability condition is acquired, the operation stability condition is that a slope of each data point is less than a preset slope threshold.

2. The direct heating drying belt oven all-in-one machine according to claim 1, characterized in that, The feature analysis module screens the abnormal interval of the dehumidification evaporator. If the number of data points not meeting the operation stability condition in the operation interval does not meet an operation efficiency normal condition, the feature analysis module determines that the operation interval is the abnormal interval. If the number of data points not meeting the operation stability condition in the operation interval meets the operation efficiency normal condition, the feature analysis module determines that the operation interval is not the abnormal interval. The operation efficiency normal condition is that a proportion of the number of data points not meeting the operation stability condition in the operation interval to a total number of data points in the operation interval is less than a preset proportion threshold.

3. The direct-heating drying-belt booth all-in-one machine according to claim 2, characterized in that, The feature analysis module determines the abnormal category of the abnormal interval. The feature analysis module determines the abnormal category of the abnormal interval.

4. The direct-heating drying-belt booth all-in-one machine according to claim 3, characterized in that, ​ ​ ​ 5. The direct-heating drying-belt booth-in-one machine according to claim 4, characterized in that, ​ 6. The direct-heating drying-belt booth-in-one machine of claim 5, wherein, ​ If the humidity and the gas flow value corresponding to the data points in the operation efficiency abnormal interval segment meet the operation efficiency dominant condition, the feature analysis module determines that the abnormal category of the operation efficiency abnormal interval segment is an operation efficiency dominant abnormal category; If the humidity and the gas flow corresponding to the data points in the operation efficiency abnormal interval segment do not meet the operation efficiency dominant condition, the feature analysis module determines that the abnormal category of the operation efficiency abnormal interval segment is an operation efficiency non-dominant abnormal category.

7. The direct-heating drying-belt booth-in-one machine of claim 6, wherein, The operation efficiency dominant condition is that the gas flow ordering corresponding to the data points is the same as the humidity ordering; The gas flow ordering is an ordering of the gas flow values corresponding to the data points in the operation efficiency abnormal interval segment from small to large in the horizontal coordinate direction; The humidity ordering is an ordering of the humidity corresponding to the data points from large to small in the vertical coordinate direction.

8. The direct-heating drying-belt booth-in-one machine of claim 7, wherein, The control module is configured to select an operation adjustment mode, wherein, If the abnormal category is an operation efficiency non-dominant abnormal category, the control module selects an operation adjustment mode that adjusts the operation power of the circulating fan according to the slope corresponding to each data point in the operation efficiency abnormal interval segment; If the abnormal category is an operation efficiency dominant abnormal category, the control module selects an operation adjustment mode that issues an abnormal alarm prompt.

9. The direct-heating drying-belt booth-in-one machine of claim 8, wherein, The operation power of the circulating fan and the efficiency characteristic value are in a negative correlation relationship, the control module obtains the absolute value of the difference between the slope corresponding to each data point in the operation efficiency abnormal interval segment and the slope threshold value, and determines the average value of the absolute value as the efficiency characteristic value.

10. The direct-heating drying-belt toaster-in-one of claim 1, wherein, The condensing cavity further comprises an electric heating pipe for heating gas.

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