CN108917311B - Dehumidification control system and dehumidification method based on exhaust starting temperature - Google Patents
Dehumidification control system and dehumidification method based on exhaust starting temperature Download PDFInfo
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- CN108917311B CN108917311B CN201810822473.8A CN201810822473A CN108917311B CN 108917311 B CN108917311 B CN 108917311B CN 201810822473 A CN201810822473 A CN 201810822473A CN 108917311 B CN108917311 B CN 108917311B
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- 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
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses a dehumidification control system based on starting and discharging temperature, which comprises a drying room, a human-computer interaction module for human-computer interaction, a control module, an execution module, a heat pump unit, a temperature and humidity acquisition module and a dehumidification air valve, wherein the control module is used for controlling the drying room to perform human-computer interaction; the invention also discloses a dehumidification method using the control system, which comprises the following steps: the first step is to carry out drying operation according to the existing drying process; the second step is to carry out the circulation operation of starting and stopping the air valve based on the starting and discharging temperature on the moisture discharging air valve; and the third step is that the humidity target and the starting and discharging temperature based air valve starting and stopping circulation operation is carried out on the moisture discharging air valve until the drying operation is finished. The invention can not only ensure the effective dehumidifying operation of the drying room, but also prevent the energy loss caused by the overlong opening time of the dehumidifying air valve, prevent the phenomenon that the drying process cannot be normally carried out due to the fact that the temperature in the drying room cannot be effectively raised, basically stabilize the drying temperature, improve the drying efficiency and have obvious energy-saving effect.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a dehumidification method of a barbecue system taking a heat pump as a heat source.
Background
Under the great situation of the national environmental protection policy, the baking equipment using a heat pump as a heat source has gradually become a social heat source supply trend. Once installed, the maximum amount of heat generated by the heat pump drying system is fixed.
Under severe working conditions, such as under the conditions of continuous rainy days and low environmental temperature, the moisture can be easily discharged for a long time (before the moisture requirement is not met), so that the heat loss can be accelerated, but the drying quality of the materials can be influenced by the moisture not being discharged.
The existing heat pump drying system comprises a drying room, a human-computer interaction module for human-computer interaction, a control module, an execution module, a heat pump unit, a temperature and humidity acquisition module and a moisture exhaust air valve; the wet air exhaust valve is arranged at the drying room and used for exhausting the wet and hot air in the drying room; the heat pump unit is used for providing heat energy for the drying room;
the control module is connected with the human-computer interaction module, the execution module and the temperature and humidity acquisition module; the execution module is connected with the heat pump unit and the moisture exhaust air valve.
The man-machine interaction is to display the drying equipment state to the user on one hand and to input the drying parameters to the control module on the other hand.
The control module is used for acquiring information and sending a control instruction to the execution module according to the acquired information and the drying parameters input by the user; the collected information comprises temperature and humidity information and drying equipment state data.
The execution module is used for controlling the opening and closing of the heat pump unit and the moisture exhaust air valve according to the control instruction sent by the control module.
The temperature and humidity acquisition module is arranged in the drying room and comprises a temperature sensor and a humidity sensor; the temperature and humidity acquisition module is used for acquiring temperature and humidity information of the dried materials and transmitting the temperature and humidity information to the control module.
When an original heat pump drying system operates, materials to be dried are conveyed into a drying room, a door of the drying room is closed, a heat pump unit is started, and drying operation is carried out according to the existing drying process. The existing drying process has different drying parameters corresponding to different materials, and the heat pump unit and the moisture exhaust air valve are controlled to be started and stopped according to the drying parameters and the temperature condition in a drying room, so that the existing drying process belongs to the conventional prior art, and is not detailed in detail.
In the operation process of the existing drying process, when the humidity in the drying room is greater than the humidity upper limit parameter (which is set by a user through a man-machine interaction module), the humidity exhaust air valve is opened, and the humidity exhaust air valve is closed until the humidity in the drying room is less than or equal to the humidity lower limit parameter. The control method has the prominent phenomenon of energy waste. For example, when the material humidity is high or the environment humidity is high, the opening time of the moisture exhaust air valve is too long; furthermore, the moisture exhaust valve cannot be closed, so that the moisture exhaust process cannot be stopped. Therefore, the heat in the drying room can be continuously dissipated to the environment, and the temperature in the drying room can not be ensured. Especially when the environmental humidity is more than or equal to the lower limit parameter of the humidity, because of continuous moisture removal, the temperature rise range in the drying room is very limited, the temperature rise of the air entering the drying room is limited, and the higher the rise temperature is, the smaller the relative humidity is. Due to the limited air temperature rise, the relative humidity is reduced in a limited way, so that the relative humidity in the drying room cannot be effectively reduced, the humidity discharging process cannot be stopped, vicious circle and energy are greatly wasted, and the drying process cannot be normally carried out.
At present, no dehumidification method which can guarantee the material drying process based on time and dehumidification targets and does not influence the material drying quality exists.
Disclosure of Invention
The invention aims to provide a dehumidifying method which can dehumidify under the condition that a heat pump drying system provides certain heat, meets the requirements of a material baking process, basically stabilizes the drying temperature, prevents energy waste caused by overlong dehumidifying time and ensures the material drying quality.
In order to achieve the purpose, the dehumidification control system based on the starting and exhaust temperature comprises a drying room, a human-computer interaction module for human-computer interaction, a control module, an execution module, a heat pump unit, a temperature and humidity acquisition module and a dehumidification air valve; the wet air exhaust valve is arranged at the drying room and used for exhausting the wet and hot air in the drying room; the heat pump unit is used for providing heat energy for the drying room;
the control module is connected with the human-computer interaction module, the execution module and the temperature and humidity acquisition module; the execution module is connected with the heat pump unit and the moisture exhaust air valve;
the man-machine interaction comprises the following two aspects: firstly, the human-computer interaction module displays the state of the drying equipment to a user, and secondly, the user inputs drying parameters to the control module through the human-computer interaction module;
the control module is used for acquiring information and sending a control instruction to the execution module according to the acquired information and the drying parameters input by the user; the acquired information comprises temperature and humidity information and drying equipment state data;
the execution module is used for controlling the opening and closing of the heat pump unit and the moisture exhaust air valve according to the control instruction sent by the control module;
the temperature and humidity acquisition module is arranged in the drying room and comprises a temperature sensor and a humidity sensor; the temperature and humidity acquisition module is used for acquiring temperature and humidity information in the dried room and transmitting the temperature and humidity information to the control module;
a parameter memory is arranged in the control module, and a target temperature parameter, a drying room humidity upper limit parameter, an exhaust starting temperature parameter X, an exhaust closing temperature parameter Y, a humidity upper limit parameter M and a humidity lower limit parameter N are stored in the parameter memory; parameters X, Y are all positive and real numbers and are in degrees Celsius, Y = X-3; m and N are percentages.
The invention also discloses a dehumidification method using the dehumidification control system based on the exhaust starting temperature, which comprises the following steps:
the first step is to carry out drying operation according to the existing drying process;
specifically, materials to be dried are transported into a drying room, a door of the drying room is closed, a heat pump unit is started, a user inputs a parameter value of the existing drying process and values of the parameters X and Y to a control module through a man-machine interaction module, and drying operation is carried out according to the existing drying process;
in the drying process, along with the evaporation of the moisture in the materials, the humidity in the drying room gradually rises; when the humidity in the drying room is more than or equal to the humidity upper limit parameter M, the control module records the temperature value in the drying room at the moment acquired by the temperature and humidity acquisition module as an exhaust starting temperature parameter X, records X-3 as an exhaust closing temperature parameter, opens the exhaust wet air valve and then enters a second step;
the second step is that the air valve opening and closing cycle operation based on the starting and discharging temperature is carried out on the moisture discharging air valve while the drying operation is carried out according to the prior drying process;
continuously performing the circulation operation of starting and stopping the air valve based on the exhaust temperature until the air humidity in the drying room is less than or equal to the humidity lower limit parameter N, stopping the circulation operation of starting and stopping the air valve based on the exhaust temperature, and starting the third step;
and the third step is that the humidity target and the starting and stopping temperature of the air valve are based on the air valve starting and stopping circulation operation of the humidity target and the starting and discharging temperature of the humidity exhaust air valve when the drying operation is carried out according to the prior drying process until the drying operation is finished.
In the second step, the circulation operation based on the starting and the stopping of the exhaust temperature air valve is as follows:
based on the circulation of starting and stopping the exhaust temperature air valve, the control module receives temperature information in the drying room transmitted by the temperature and humidity acquisition module, and when the temperature in the drying room is more than or equal to a starting and exhaust temperature parameter X, the control module keeps the exhaust temperature air valve in an open state through the execution module; after the dehumidifying air valve is opened, ambient normal-temperature air enters the drying room, and the temperature in the drying room is reduced; when the temperature in the drying room is less than or equal to the closing exhaust temperature parameter Y, the control module keeps the dehumidifying air valve in a closing state through the execution module.
In the third step, the air valve on-off cycle operation based on the humidity target and the starting and discharging temperature is as follows:
when the air humidity in the drying room is less than the humidity upper limit parameter M, keeping the moisture exhaust air valve in a closed state; and when the air humidity in the drying room is more than or equal to the humidity upper limit parameter M, skipping to execute the second step.
The invention has the following advantages:
according to the invention, the dehumidifying air valve is subjected to the on-off cycle operation based on the on-off temperature air valve, so that the dehumidifying air valve can be closed no matter whether the humidity in the drying room is reduced to the lower limit of the humidity, thereby avoiding the defects caused by the overlong opening time of the dehumidifying air valve or even the incapability of closing the dehumidifying air valve and ensuring the normal operation of the drying process. Even if the relative humidity of the outside air is high, the control method of the invention can ensure that the moisture exhaust air valve can be closed, and ensure that the temperature in the drying room can be effectively raised. After the air with high external relative humidity enters the drying room and the temperature rises, the relative humidity of the air naturally decreases. After the temperature of the air in the drying room is increased and the humidity is reduced, the evaporation of the moisture in the dried articles is naturally facilitated. After the relative humidity is reduced, the normal operation of the drying process can be ensured.
In the second step, after the moisture exhaust air valve is closed, the temperature in the drying room is gradually increased under the heating action of the heat pump unit, and the moisture exhaust air valve is opened when the moisture exhaust air valve reaches the starting and exhausting temperature parameter X. After the dehumidifying air valve is opened, the temperature in the drying room gradually decreases along with the ambient air entering the drying room, so that the exhaust temperature parameter Y is closed again. Therefore, the temperature in the drying room can be kept between X ℃ and Y ℃ (namely X-3 ℃) in the second step, so that the effect of moisture removal is achieved, the drying temperature of the drying room is basically stabilized, and the drying efficiency is greatly improved compared with the prior art. Meanwhile, the temperature in the drying room is inevitably up to the exhaust temperature parameter Y after the exhaust air valve is opened for a long time, so that the problems of long exhaust time and waste of a large amount of energy in the past can be avoided by adopting the control method in the second step.
The specific parameter values need to be specifically adjusted by a user according to the material characteristics, and conditions for obtaining the optimal process parameters in practice by adjusting various parameters (namely an exhaust starting temperature parameter X, an exhaust closing temperature parameter Y, a humidity upper limit parameter M and a humidity lower limit parameter N) are provided for the user. Based on the disclosure of the present invention, it is within the ability of those skilled in the art to set the specific values of the parameters according to the temperature and humidity conditions of the environment and the material characteristics (material type, water content, etc.), and to adjust the values of the parameters in the actual operation process until the optimal operation effect of the system is achieved.
And in the third step, the air valve opening and closing circulation operation based on the humidity target and the starting and discharging temperature can prevent the energy loss caused by the moisture discharging when the humidity in the drying room is low, and further avoid the energy loss while ensuring the drying quality.
The invention has simple structure and convenient use, and the user can automatically run the whole system only by setting various parameters (the set parameters are more X and Y parameters than the prior art) through the human-computer interaction module in the same use mode as the prior art.
In a word, the invention can ensure the effective dehumidifying operation of the drying room, prevent the energy loss caused by the overlong opening time of the dehumidifying air valve, prevent the phenomenon that the drying process cannot be normally carried out due to the fact that the temperature in the drying room cannot be effectively raised, basically stabilize the drying temperature, improve the drying efficiency and have obvious energy-saving effect.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The direction indicated by the arrow in fig. 1 is the direction of transfer of information. The humidity in the present invention refers to relative humidity.
As shown in fig. 1, the humidity-discharging control system based on the starting and discharging temperature of the invention comprises a drying room, a human-computer interaction module 1 for human-computer interaction, a control module 2, an execution module 3, a heat pump unit 4, a temperature and humidity acquisition module 5 and a humidity-discharging air valve 6; the moisture exhaust air valve 6 is arranged at the drying room and used for exhausting the moist and hot air in the drying room; the heat pump unit 4 is used for providing heat energy for the drying room; the drying room is conventional and not shown. The human-computer interaction module 1 comprises a display screen and an input device. When the display screen is a touch screen, the display screen has the functions of both the display screen and the input device. When a normal non-touch display screen is used, the input device is a set button or a keyboard.
The control module 2 is connected with the human-computer interaction module 1, the execution module 3 and the temperature and humidity acquisition module 5; the execution module 3 is connected with the heat pump unit 4 and the moisture exhaust air valve 6;
the man-machine interaction comprises the following two aspects: firstly, the human-computer interaction module 1 displays the state of the drying equipment to a user, and secondly, the user inputs drying parameters to the control module 2 through the human-computer interaction module 1;
the control module 2 is used for acquiring information and sending a control instruction to the execution module according to the acquired information and the drying parameters input by the user; the acquired information comprises temperature and humidity information and drying equipment state data;
the execution module 3 is used for controlling the opening and closing of the heat pump unit 4 and the moisture exhaust air valve 6 according to the control instruction sent by the control module 2;
the temperature and humidity acquisition module 5 is arranged in the drying room and comprises a temperature sensor and a humidity sensor; the temperature and humidity acquisition module 5 is used for acquiring temperature and humidity information in the dried room and transmitting the temperature and humidity information to the control module 2;
a parameter memory is arranged in the control module 2, and a target temperature parameter, a drying room humidity upper limit parameter, an exhaust starting temperature parameter X, an exhaust closing temperature parameter Y, a humidity upper limit parameter M and a humidity lower limit parameter N are stored in the parameter memory; parameters X, Y are all positive and real numbers and are in degrees Celsius, Y = X-3; both M and N are percentages indicating relative humidity.
The target temperature parameter and the upper limit humidity parameter of the drying room are parameters in the existing process, and the control module 2 controls the existing drying process according to the existing parameters.
The invention also discloses a dehumidification method using the dehumidification control system based on the exhaust starting temperature, which comprises the following steps:
the first step is to carry out drying operation according to the existing drying process;
specifically, materials to be dried are conveyed into a drying room, a door of the drying room is closed, a heat pump unit 4 is started, a user inputs a parameter value (such as a target temperature value during drying, a heat pump unit is started and stopped according to the target temperature value in the prior art) of the existing drying process and values of parameters X and Y into a control module 2 through a human-computer interaction module 1, and drying operation is carried out according to the existing drying process;
in the drying process, along with the evaporation of the moisture in the materials, the humidity in the drying room gradually rises; when the humidity in the drying room is more than or equal to the humidity upper limit parameter M, the control module records the temperature value in the drying room at the moment acquired by the temperature and humidity acquisition module as an exhaust starting temperature parameter X, records X-3 as an exhaust closing temperature parameter, opens the exhaust wet air valve 6 and then enters a second step;
the second step is that the air valve opening and closing cycle operation based on the starting and discharging temperature is carried out on the moisture discharging air valve 6 while the drying operation is carried out according to the existing drying process;
continuously performing the circulation operation of starting and stopping the air valve based on the exhaust temperature until the air humidity in the drying room is less than or equal to the humidity lower limit parameter N, stopping the circulation operation of starting and stopping the air valve based on the exhaust temperature, and starting the third step;
the third step is that the air valve opening and closing circulation operation based on the humidity target and the starting and discharging temperature is carried out on the moisture discharging air valve 6 while the drying operation is carried out according to the existing drying process;
and continuously performing air valve opening and closing circulation operation based on the humidity target and the starting and discharging temperature until the drying operation is finished.
In the second step, the circulation operation based on the starting and the stopping of the exhaust temperature air valve is as follows:
based on the circulation of starting and stopping the exhaust temperature air valve, the control module 2 receives the temperature information in the drying room transmitted by the temperature and humidity acquisition module 5, and when the temperature in the drying room is more than or equal to the starting and exhaust temperature parameter X, the control module 2 keeps the exhaust air valve 6 in an open state through the execution module 3; after the dehumidifying air valve 6 is opened, ambient normal-temperature air enters the drying room, and the temperature in the drying room is reduced; when the temperature in the drying room is less than or equal to the closing exhaust temperature parameter Y, the control module 2 keeps the dehumidifying air valve 6 in a closed state through the execution module 3.
In the second step, after the moisture exhaust air valve is closed, the temperature in the drying room is gradually increased under the heating action of the heat pump unit, and the moisture exhaust air valve is opened when the moisture exhaust air valve reaches the starting and exhausting temperature parameter X. After the dehumidifying air valve is opened, the temperature in the drying room gradually decreases along with the ambient air entering the drying room, so that the exhaust temperature parameter Y is closed again. Therefore, the temperature in the drying room can be kept between X ℃ and Y ℃ (namely X-3 ℃) in the second step, so that the effect of moisture removal is achieved, the drying temperature of the drying room is basically stabilized, and the drying efficiency is greatly improved compared with the prior art. Meanwhile, the temperature in the drying room is inevitably up to the exhaust temperature parameter Y after the exhaust air valve is opened for a long time, so that the problems of long exhaust time and waste of a large amount of energy in the past can be avoided by adopting the control method in the second step.
The specific parameter values need to be specifically adjusted by a user according to the material characteristics, and conditions for obtaining the optimal process parameters in practice by adjusting various parameters (namely an exhaust starting temperature parameter X, an exhaust closing temperature parameter Y, a humidity upper limit parameter M and a humidity lower limit parameter N) are provided for the user. Based on the disclosure of the present invention, it is within the ability of those skilled in the art to set the specific values of the parameters according to the temperature and humidity conditions of the environment and the material characteristics (material type, water content, etc.), and to adjust the values of the parameters in the actual operation process until the optimal operation effect of the system is achieved.
In the third step, the air valve on-off cycle operation based on the humidity target and the starting and discharging temperature is as follows:
when the air humidity in the drying room is less than the humidity upper limit parameter M, keeping the dehumidifying air valve 6 in a closed state; and when the air humidity in the drying room is more than or equal to the humidity upper limit parameter M, skipping to execute the second step.
And in the third step, the air valve opening and closing circulation operation based on the humidity target and the starting and discharging temperature can prevent the energy loss caused by the moisture discharging when the humidity in the drying room is low, and further avoid the energy loss while ensuring the drying quality.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
Claims (3)
1. The dehumidification method using the dehumidification control system based on the starting and exhausting temperature is characterized in that:
the dehumidification control system based on the starting and exhaust temperature comprises a drying room, a human-computer interaction module for human-computer interaction, a control module, an execution module, a heat pump unit, a temperature and humidity acquisition module and a dehumidification air valve; the wet air exhaust valve is arranged at the drying room and used for exhausting the wet and hot air in the drying room; the heat pump unit is used for providing heat energy for the drying room;
the control module is connected with the human-computer interaction module, the execution module and the temperature and humidity acquisition module; the execution module is connected with the heat pump unit and the moisture exhaust air valve;
the man-machine interaction comprises the following two aspects: firstly, the human-computer interaction module displays the state of the drying equipment to a user, and secondly, the user inputs drying parameters to the control module through the human-computer interaction module;
the control module is used for acquiring information and sending a control instruction to the execution module according to the acquired information and the drying parameters input by the user; the acquired information comprises temperature and humidity information and drying equipment state data;
the execution module is used for controlling the opening and closing of the heat pump unit and the moisture exhaust air valve according to the control instruction sent by the control module;
the temperature and humidity acquisition module is arranged in the drying room and comprises a temperature sensor and a humidity sensor; the temperature and humidity acquisition module is used for acquiring temperature and humidity information in the drying room and transmitting the temperature and humidity information to the control module;
a parameter memory is arranged in the control module, and a target temperature parameter, a drying room humidity upper limit parameter, an exhaust starting temperature parameter X, an exhaust closing temperature parameter Y, a humidity upper limit parameter M and a humidity lower limit parameter N are stored in the parameter memory; parameters X, Y are all positive and real numbers and are in degrees Celsius, Y = X-3; m and N are percentages;
the moisture removing method comprises the following steps:
the first step is to carry out drying operation according to the existing drying process;
specifically, materials to be dried are transported into a drying room, a door of the drying room is closed, a heat pump unit is started, a user inputs a parameter value of the existing drying process and values of the parameters X and Y to a control module through a man-machine interaction module, and drying operation is carried out according to the existing drying process;
in the drying process, along with the evaporation of the moisture in the materials, the humidity in the drying room gradually rises; when the humidity in the drying room is more than or equal to the humidity upper limit parameter M, the control module records the temperature value in the drying room at the moment acquired by the temperature and humidity acquisition module as an exhaust starting temperature parameter X, records X-3 as an exhaust closing temperature parameter, opens the exhaust wet air valve and then enters a second step;
the second step is that the air valve opening and closing cycle operation based on the starting and discharging temperature is carried out on the moisture discharging air valve while the drying operation is carried out according to the prior drying process;
continuously performing the circulation operation of starting and stopping the air valve based on the exhaust temperature until the air humidity in the drying room is less than or equal to the humidity lower limit parameter N, stopping the circulation operation of starting and stopping the air valve based on the exhaust temperature, and starting the third step;
and the third step is that the humidity target and the starting and stopping temperature of the air valve are based on the air valve starting and stopping circulation operation of the humidity target and the starting and discharging temperature of the humidity exhaust air valve when the drying operation is carried out according to the prior drying process until the drying operation is finished.
2. The dehumidifying method according to claim 1, wherein the second step is based on the operation of the exhaust temperature damper on/off cycle as follows:
based on the circulation of starting and stopping the exhaust temperature air valve, the control module receives temperature information in the drying room transmitted by the temperature and humidity acquisition module, and when the temperature in the drying room is more than or equal to a starting and exhaust temperature parameter X, the control module keeps the exhaust temperature air valve in an open state through the execution module; after the dehumidifying air valve is opened, ambient normal-temperature air enters the drying room, and the temperature in the drying room is reduced; when the temperature in the drying room is less than or equal to the closing exhaust temperature parameter Y, the control module keeps the dehumidifying air valve in a closing state through the execution module.
3. The dehumidifying method according to claim 1 or 2, wherein the damper on-off cycle work based on the humidity target and the discharge start temperature in the third step is:
when the air humidity in the drying room is less than the humidity upper limit parameter M, keeping the moisture exhaust air valve in a closed state; and when the air humidity in the drying room is more than or equal to the humidity upper limit parameter M, skipping to execute the second step.
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| CN110926198A (en) * | 2019-11-07 | 2020-03-27 | 珠海格力电器股份有限公司 | Heat pump drying system, drying method, device and controller |
| CN112066659A (en) * | 2020-09-15 | 2020-12-11 | 湖南兴业太阳能科技有限公司 | Circulating dehumidification control system and method for air-source heat pump dryer |
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| CN103438693A (en) * | 2013-08-30 | 2013-12-11 | 中国农业大学 | Automatic control system of gas jet impact drying machine |
| CN103512342A (en) * | 2013-09-18 | 2014-01-15 | 江门市华延自动化设备制造有限公司 | Energy-saving heat pump humidity removing drying room and control method thereof |
| EP3139119A1 (en) * | 2015-05-15 | 2017-03-08 | Goncalo Nuno Figueiredo Costa Martins | Method for the automation of the operation mode of a hybrid solar dryer for plants and respecitive hybrid solar dryer |
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| CN106369991A (en) * | 2016-10-13 | 2017-02-01 | 广东芬尼克兹节能设备有限公司 | Drying control method |
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