CN108185501B - Clean energy complementary intensive oven heating and dehumidification device - Google Patents

Abstract

The invention discloses a clean energy complementary intensive heating and dehumidification device for a roasting house, comprising a cabinet composed of a heating chamber I, a dehumidification and waste heat recovery chamber II, a heat pump compressor ❶ installed on the cabinet shell and the compressor overheating Sensor ❷, throttle valve ❸, hot water circulation pump ❹, hot water solenoid valve ❺, power supply controller ⓫ and baking controller ❾, hot water storage tank ❻ and hot water level sensor ❽ in the outer space of the cabinet, Heat collector tube array ❼ , photovoltaic panel array ⓭ , battery pack ⓬ , temperature and humidity sensor ❿ , the cabinet shell is provided with an air inlet ⑭ and an air outlet ⑮ for connecting with the intensive roasting room, a moisture exhaust outlet ⑯, a fresh air supplementary outlet ⑰. Condensate water outlet ⑱. The beneficial effect of the patent is that the three heat exchangers in the heating chamber exchange heat with the air after the waste heat recovery of the dehumidification process in the heating chamber in a clean energy complementary manner to provide heat, which effectively improves the energy utilization rate and reduces the baking energy consumption.

Description

Clean energy complementary intensive oven heating and dehumidification device

technical field

The invention belongs to a heating and dehumidification system for baking, in particular to a heating and dehumidification device for intensive baking room with complementary clean energy.

Background technique

Flue-cured tobacco modulation is a process of using heat energy to achieve a series of physiological and biochemical changes and dehydration and drying inside tobacco leaves at a certain time and in a specific drying room. The energy consumption process of tobacco leaf curing is generally that the fuel is burned in the furnace to generate heat, and then the air in the barn is heated by the cooling equipment, and the hot air heats the tobacco leaves, dehydrates the tobacco leaves and vaporizes them into the air, and forms hot and humid air that is discharged outside the barn. A lot of energy is consumed in this process.

With the global energy crisis and the intensification of the greenhouse effect, renewable, economical, and recycled energy has attracted much attention. Energy prices have risen again and again, and the production cost of flue-cured tobacco has increased year by year. The research on intensive roasting houses with "high efficiency, high quality and energy saving" has become a research hotspot at home and abroad. my country is a big producer of flue-cured tobacco, but also a country lacking energy. The annual output of flue-cured tobacco in my country is maintained at about 1.5 million tons. According to the requirement of 1.5 ~ 2.0 kg of coal per 1 kg of dry tobacco for curing, the consumption of coal for curing tobacco leaves is 2.25 million ~ 3 million. Ton. Therefore, in-depth discussion of the current energy utilization status and existing problems in intensive curing houses, and research on energy saving and new energy utilization methods in curing houses will not only help reduce the production cost of flue-cured tobacco and increase the income of tobacco farmers, but also be conducive to the sustainable development of tobacco production and reduce environmental pollution. pollution, and provide a guarantee for the construction of low-carbon and environmentally friendly modern tobacco agriculture.

China has a vast land area and abundant solar energy resources, which range from 3348 to 8371 MJ/(m ² ·a), and the national average is about 5860 MJ/(m ² ·a). Since the 21st century, the technology of low-temperature solar thermal utilization has made great progress, and it is the most widely used and commercialized solar energy utilization technology. At present, my country is the country with the largest production and sales of solar collectors in the world, so it has a good application basis for using solar energy for heat supply in intensive barns in smoke areas with abundant solar energy resources. A heat pump is a refrigeration system that releases heat through the condensation of the refrigerant in the condenser. It is a high-efficiency energy-saving device with mature technology and reliable performance, and is widely used. Among them, the air source heat pump is the most economical and convenient in the heat pump technology. Moreover, tobacco leaf curing work is generally carried out in summer and early autumn, when the outside temperature is high and the heat pump energy efficiency ratio is the highest, so it is very suitable to use heat pump technology to bake tobacco leaves. Compared with traditional energy sources, using a high-temperature heat pump unit as a heat source, the heat supplied and the required heating temperature can still meet the demand without adding other auxiliary heat sources. The high temperature heat pump unit can adopt frequency conversion technology and use microcomputer control, which can provide heat and increase temperature more sensitively and accurately. Therefore, it is very necessary to develop a multi-energy complementary intensive oven heating system.

SUMMARY OF THE INVENTION

In view of the above-mentioned problems, the present invention discloses a heat supply and dehumidification device for intensive baking room with complementary clean energy.

The technical scheme adopted in the present invention is as follows: a clean energy complementary intensive heating and dehumidification device for a roasting house, comprising a cabinet consisting of a heating chamber, a dehumidification and a waste heat recovery chamber, a heat pump compressor and a compressor mounted on the cabinet shell. Overheating sensor, throttle valve, hot water circulation pump, hot water solenoid valve, power controller and baking controller, hot water storage tank placed outside the cabinet, hot water level sensor, collector tube array, photovoltaic panel array , battery pack, temperature and humidity sensor of the intensive baking room, the cabinet shell is provided with an air inlet and an air outlet for connecting with the intensive baking room, and is also provided with a moisture exhaust outlet, a fresh air supplementary outlet, and a condensed water outlet; it is characterized by: heating The chamber, dehumidification and waste heat recovery chamber are separated by an intermediate heat insulation board. The heating chamber is provided with three heat exchangers, electric auxiliary heater, condenser and water-heat exchanger, and a circulating fan. The equipment together form a solar collector heating module, an air energy heating module, a grid electric energy or a solar photovoltaic heating module. The dehumidification and waste heat recovery rooms are equipped with an axial flow fan, a total heat exchanger, a three-way solenoid valve, and a three-way electromagnetic valve. Valve 2, evaporator, drain solenoid valve, condensate collection box and condensate level sensor are controlled by power controller and baking controller to three-way solenoid valve 1 and 3-way solenoid valve 2 to form a full heat recovery drain. There are two working modes of humidification and internal circulation dehumidification. According to the detection value of the condensate water level sensor, the drain solenoid valve is controlled to realize the automatic discharge of condensate water; the baking controller includes the main control CPU module, AC-DC module, temperature and humidity and liquid level. Acquisition module, communication interface A, communication interface B, program and data storage A, LCD touch screen, the main control CPU module collects the working state parameters of the device in real time through the temperature, humidity and liquid level acquisition module, and according to the LCD touch screen or the host computer The preset baking process curve is controlled by the built-in embedded algorithm program and control program and transmitted to the power controller through the communication interface A to control the corresponding equipment or modules; the power controller consists of the power CPU, the program data memory B , Communication interface C, relay and its drive module, DC-DC converter, power detection I, drive control circuit I, battery pack, power detection II, DC-AC converter, drive control circuit II, output switching control circuit, voltage It consists of a current detection module. The power supply CPU completes the MPPT control and the reasonable charging management of the battery pack through the drive control circuit I and the DC-DC converter according to the detection results of the power detection I, the power detection II, and the voltage and current detection modules, and also through the drive control circuit II. And the DC-AC converter inverts the voltage of the battery pack to 220V AC output, comprehensively analyzes the power of the solar panel, the power of the battery pack and the power consumption of the device, and automatically selects the power supply of the device through the output switching control circuit. The communication interface C Receiving the control command of the baking controller, the relay and its drive module realize the control of the heat pump compressor, hot water circulating pump, circulating fan, axial flow fan, electric auxiliary heater, three-way solenoid valve 1, three-way solenoid valve 2, heat pump Control of water solenoid valve and drain solenoid valve; during the baking process of intensive baking room The precipitation hot and humid air is connected to the air inlet, and is drawn into the dehumidification and waste heat recovery chamber by the axial flow fan for waste heat recovery. After the three heat exchangers of the electric auxiliary heater conduct heat exchange, they return to the entrance of the intensive baking room through the air outlet under the action of the circulating fan. The three heat exchangers will give priority to the solar heat collection and heating supply under the premise that the heat meets the requirements of the baking process. When the solar collector heat supply is insufficient, the solar collector heat supply module and the air energy heating module are activated at the same time. If the solar collector heat supply and the air energy supply together cannot meet the requirements of the baking process, the electric auxiliary heating is restarted. During the whole baking process, the device is powered by the grid by default. If the battery pack and photovoltaic panel array are sufficiently charged, the device will automatically switch the power supply to solar photovoltaic. The complementary use of the four clean energy sources can meet the requirements of intensive baking room baking. The heat demand in the early, middle and late stages of baking is determined by the baking controller and power controller according to the baking process curve, the temperature and humidity in the intensive baking room, and the real-time working parameters of the equipment. 、Internal circulation dehumidification two working modes, control the four clean energy sources of solar heat collection, air energy, grid electricity or solar photovoltaic to provide energy for the three heat exchangers in the heating chamber, so as to achieve energy saving optimization and effectively improve energy utilization. , Reduce the energy consumption of baking, reduce the loss of beneficial substances in tobacco leaves.

In the present invention, the heating chamber is provided with energy by solar heat collection, air energy, grid electricity and solar photovoltaic, and the heating air flow enters through the central air hole of the middle heat insulation board under the negative pressure of the circulating fan, and passes through the air outlet. Discharge; the solar collector heat supply module includes a collector tube array for converting solar radiant energy into thermal energy, an insulated hot water storage tank for heat storage medium preservation, a hot water circulation pump for water flow control and regulation, and a For the water-heat exchanger that transfers heat to the indoor air, and the hot water solenoid valve for preventing water convection and heat dissipation, under the control of the baking controller and power controller, the hot water circulation pump and hot water solenoid valve are turned on. , so that the hot water flowing through the water-heat exchanger exchanges heat with the air in the heating room to provide heat for the intensive baking room; the air energy heating module includes a condenser placed in the heating room, a dehumidification and waste heat recovery room The evaporator, the throttle valve placed on the cabinet shell, the heat pump compressor and the compressor overheat sensor, the heat pump compressor converts the state of the working fluid from low temperature, low pressure gas state to high temperature under the control of the baking controller and the power supply controller , high-pressure gaseous state, which is liquefied into a low-temperature, high-pressure liquid state through the heat dissipation of the condenser, and then becomes a low-temperature and low-pressure liquid state after passing through the throttle valve, and flows to the evaporator. The condenser dissipates heat by exchanging heat with the air in the heating room, so as to convert the air energy at the evaporator into heat energy for intensive baking; grid electricity or solar photovoltaic heating modules include electric auxiliary heaters, power supply controllers , Photovoltaic panel array, battery pack, grid power, the power supply controller automatically selects the power supply and charges the battery pack according to the status of the photovoltaic panel array, power grid, and battery pack. Process requirements, controlled by the power controller when the solar collector heating module and the air energy heating module are insufficient in heat supply.

In the present invention, the dehumidification and waste heat recovery chamber has two working modes: total heat recovery and dehumidification, and internal circulation dehumidification. The condensed water generated by dehumidification is collected by the condensed water collection box. When the baking controller passes the condensed water When the level sensor detects that the collected water level is higher than the set upper limit, it will control the drain solenoid valve to open, and the condensed water will flow out through the condensate water outlet. One is connected to the moisture exhaust outlet, the second is connected to the fresh air supply port, and the high-temperature and high-humidity air drawn by the axial flow fan from the intensive baking room through the air inlet enters the total heat exchanger and from the fresh air supply port and passes through the evaporator. The low-temperature and low-humidity fresh air after cooling and dehumidification is exchanged for heat, so that the high-temperature and high-humidity air becomes low-temperature and high-humidity and is discharged to the outside through the moisture outlet through the three-way solenoid valve. The central air hole enters the heating chamber, which not only realizes the dehumidification, but also makes full use of the fresh air energy and the waste heat of dehumidification, which is suitable for the baking stage without precipitation of beneficial substances; in the baking stage of the precipitation of beneficial substances, the internal circulation dehumidification work mode should be adopted The three-way solenoid valve 1 and the 3-way solenoid valve 2 are connected to each other, and are disconnected from the moisture exhaust outlet and the fresh air supplementary outlet. The low-temperature and low-humidity air cooled and dehumidified by the evaporator conducts heat exchange, so that the high-temperature and high-humidity air becomes low-temperature and high-humidity and sent to the evaporator for dehumidification. After heating, it returns to the intensive roasting room. The heating and dehumidification device and the airflow of the intensive roasting room form a closed inner loop, which not only removes the water vapor precipitated during roasting, but also recovers the waste heat and reduces the emission of beneficial substances; full heat Recycling and dehumidification, internal circulation dehumidification, and condensate discharge are all completed under the monitoring of the baking controller and the power supply controller.

The beneficial effect of the present invention is that: the three heat exchangers, such as water-heat exchanger, condenser, and electric auxiliary heater, adopt four kinds of clean energy, such as solar heat collection, air energy, grid electric energy or solar photovoltaic, according to the principle of optimal energy saving. The air in the heating chamber I conducts heat exchange, and the baking controller and the power supply controller control the cleaning of the three heat exchangers in the heating chamber I according to the baking process curve, the temperature and humidity in the intensive baking chamber, and the real-time working parameters of the equipment. It can exchange heat with the air in the heating chamber after the waste heat recovery of the dehumidification process in a complementary way to provide heat, which effectively improves the energy utilization rate and reduces the baking energy consumption.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

In the picture: Ⅰ. Heating room, Ⅱ. Dehumidification and waste heat recovery room, ①. Electric auxiliary heater, ②. Circulating fan, ③. Condenser, ④. Water-heat exchanger, ⑤. Intermediate heat shield, ⑥. Axial flow fan, ⑦. Total heat exchanger, ⑧. Three-way solenoid valve one, ⑨. Three-way solenoid valve two, ⑩. Evaporator, ⑪. Condensate collection box, ⑫. Drain solenoid valve, ⑬. Condensate liquid Position Sensor, ⑭. Air Inlet, ⑮. Air Outlet, ⑯. Humidity Outlet, ⑰. Fresh Air Supplement, ⑱. Condensate Outlet, ❶. Heat Pump Compressor, ❷. Compressor Overheat Sensor, ❸. Throttle Valve , ❹. Hot water circulation pump, ❺. Hot water solenoid valve, ❻. Hot water storage tank, ❼. Collector tube array, ❽. Hot water level sensor, ❾. Baking controller, ❿. Sensors, ⓫. Power Controllers, ⓬. Battery Packs, ⓭. PV Panel Arrays.

FIG. 2 is a block diagram of an embodiment of the toasting controller of the present invention.

FIG. 3 is a block diagram of an embodiment of a power supply controller of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to the accompanying drawings, FIG. 1 is a schematic diagram of the overall structure of the present invention. A clean energy complementary intensive heating and dehumidification device for a roasting room, comprising a cabinet consisting of a heating chamber I, a dehumidification and waste heat recovery chamber II, a heat pump compressor ❶ installed on the cabinet shell, and a compressor overheating sensor ❷ , Flow valve ❸, hot water circulation pump ❹, hot water solenoid valve ❺, power supply controller ⓫ and baking controller ❾, hot water storage tank ❻ and hot water level sensor ❽ in the outer space of the cabinet, and collector tube array ❼ , photovoltaic panel array ⓭, battery pack ⓬, temperature and humidity sensor ❿, the cabinet shell is provided with air inlet ⑭ and air outlet ⑮ for connecting with the intensive roasting room, moisture exhaust outlet ⑯, fresh air supply port ⑰, condensate water Discharge port ⑱; it is characterized in that: heating chamber I, dehumidification and waste heat recovery chamber II are separated by an intermediate heat insulation board ⑤, and heating chamber I is provided with electric auxiliary heater ①, condenser ③, water-heat exchanger ④ There are three types of heat exchangers and circulating fans ②, the dehumidification and waste heat recovery room II is equipped with an axial flow fan ⑥, total heat exchanger ⑦, three-way solenoid valve 1 ⑧, three-way solenoid valve 2 ⑨, evaporator ⑩, drain solenoid Valve ⑫, condensate collection box ⑪ and condensate level sensor ⑬; the hot and humid air separated during the baking process of the intensive baking room is connected to the air inlet ⑭, and is drawn into the dehumidification and waste heat recovery room II by the axial flow fan ⑥ for waste heat recovery, After dehumidification, it enters the heating chamber I through the central air hole of the intermediate heat insulation board ⑤, and after heat exchange with the water-heat exchanger ④, the condenser ③, and the electric auxiliary heater ①, it returns to the denser through the air outlet ⑮ under the action of the circulating fan ②. At the entrance of the baking room, the three heat exchangers use four clean energy sources of solar heat collection, air energy, grid electricity or solar photovoltaic to exchange heat with the air in the heating room I according to the principle of optimal energy saving, and are controlled by the baking controller ❾ and The power controller⓫ controls the three heat exchangers in the heating chamber I to exchange with the air after the waste heat recovery in the dehumidification process in the heating chamber according to the baking process curve, the temperature and humidity in the intensive baking room, and the real-time working parameters of the equipment. Heat to provide heat, which effectively improves energy utilization and reduces baking energy consumption. In the present invention, the heating chamber converts four different energy sources, namely solar heat collection, solar photovoltaic, air energy and grid electric energy into heat energy, and then utilizes the solar heating module, high temperature heat pump unit heating module and electric energy heating module in the heating chamber. The heating device of the heating module exchanges heat with the air in the heating chamber, and according to the stage of tobacco roasting, the temperature value collected by the integrated temperature and humidity sensor in the tobacco-loading chamber, and the temperature of the water inlet of the heat exchanger, the roasting controller is controlled by the roasting controller. ❾ and power controller ⓫ control the on/off of the three heating modules to control the heat exchange device in the heating chamber to exchange heat with the air, and then send the hot air after heat exchange with the heat exchange device through the air outlet of the heating chamber into the device. Tobacco chamber is used for tobacco roasting. Tobacco loading chamber discharges the precipitation moisture in the process of tobacco roasting to the dehumidification chamber through flowing hot air for dehumidification. The dehumidification method depends on the stage of tobacco roasting and the required dehumidification amount. The size of the dehumidification method is controlled by the control system and the dehumidification method is selected. The dehumidified air is sent to the heating chamber for heating. The water formed during the dehumidification process is discharged to the outdoor through the drainage pipe in the dehumidification chamber. The four energy sources use heat while ensuring normal baking. The complementary method provides heat for the tobacco-loading room, which can improve energy utilization, reduce energy consumption, improve the quality of tobacco leaf curing, and improve control accuracy.

The heating chamber I is powered by solar heat collection, air energy, grid electricity and solar photovoltaic. The heating air flow enters through the central air hole of the middle heat insulation board ⑤ under the action of the negative pressure of the circulating fan ②, and is discharged through the air outlet ⑮; the solar collector The thermal heating module includes a collector tube array ❼ for converting solar radiation energy into thermal energy, an insulated hot water storage tank ❻ for heat storage medium preservation, a hot water circulation pump ❹ for water flow control and regulation, The water-heat exchanger ④ that transfers heat to the indoor air, and the hot water solenoid valve ❺ is used to prevent the heat from dissipating heat. Under the control of the baking controller ❾ and the power controller ⓫, the hot water circulation pump ❹ is turned on, The hot water solenoid valve ❺ makes the hot water flowing through the water-heat exchanger ④ exchange heat with the air in the heating room to provide heat for the intensive roasting room; the air energy heating module includes a condenser ③ placed in the heating room Ⅰ , evaporator ⑩ placed in dehumidification and waste heat recovery room II, throttle valve ❸ placed on the cabinet shell, heat pump compressor ❶ and compressor overheating sensor ❷, heat pump compressor ❶ in the baking controller ❾ and power management control Under the control of the device ⓫, the state of the working fluid is converted from a low temperature and low pressure gas state to a high temperature and high pressure gas state, which is liquefied into a low temperature and high pressure liquid state by heat dissipation by the condenser ③, and then becomes a low temperature and low pressure liquid state after passing through the throttle valve ❸. The evaporator ⑩ absorbs heat and vaporizes due to the sudden change of space in the evaporator, and then flows back to the heat pump compressor ❶. The condenser ③ dissipates heat by exchanging heat with the air in the heating chamber I, so as to convert the air energy at the evaporator ⑩ into Heat energy for baking in intensive baking rooms; grid power or solar photovoltaic heating module includes electric auxiliary heater①, power controller⓫, photovoltaic panel array⓭, battery bank⓬, grid power, and the power controller⓫ according to the photovoltaic panel array The state of ⓭, power grid, battery pack⓬ automatically selects the power supply and charges the battery pack. When the module heat supply is insufficient, it is controlled by the power controller ⓫. In the present invention, the solar heating module includes a solar heat collector tube, a circulating water pump, a hot water storage tank, and a heat exchanger. The solar heat collector tube is placed on the roof of the smoke chamber and connected to the hot water storage tank for converting solar radiation energy into It is heat energy, and then the heat energy converted by the heat collector tube is used to exchange heat with the water in the heat collector tube to increase the temperature of the water. The circulating water pump is placed on the outer wall of the heating chamber, one end is connected to the hot water storage tank, and the other end is connected to the heat exchange. , used to control the water flow switch and adjust the water flow speed. The motor of the circulating water pump can use a variable frequency motor. When the solar radiation amount is high, the water flow speed can be accelerated to improve the heat exchange efficiency. When the solar radiation amount is low, the water flow speed can be reduced. Improve heat exchange Efficiency, when the hot water temperature is lower than the temperature required for tobacco leaf baking in the smoke chamber, the circulating water pump is turned off. The switch of the circulating water pump and the adjustment of the water flow speed are controlled by the controller. The hot water storage tank is placed together with the solar collector tube. , one end is connected to the circulating water pump, and the other end is connected to the heat exchanger for storing hot water. The stored hot water is used for the conversion of solar radiation energy in the evening and at night, which cannot meet the heat supply required for tobacco leaf baking. It is placed on the bottom layer of the heating chamber, one end is connected to the circulating water pump, and the other end is connected to the hot water storage tank, which is used to exchange heat between the hot water flowing through the heat exchanger and the air in the heating chamber. The solar heating module varies according to the regional solar radiation energy. Different from the material of the heat exchanger, it can be used to supply heat for curing tobacco leaves before the required temperature in the smoke chamber is 45℃~50℃. The heating module of high temperature heat pump unit includes heat pump compressor, condenser, evaporator, throttle valve, working fluid. Connected, the compressor can use a variable frequency compressor, adjust the power according to the amount of dehumidification and the amount of heat supplied, and be controlled by the controller to convert the high temperature and low pressure working fluid into high temperature and high pressure. The condenser is placed in the heating room The next layer of the heat exchanger, one end is connected to the heat pump compressor, and the other end is connected to the throttle valve, which is used for heat exchange between the working fluid in the condenser and the air in the heating chamber, and then the hot air after heat exchange is supplied to the smoke chamber Tobacco leaf curing, the air heated by the condenser is mainly used for the heat supply when the solar heating module cannot meet the tobacco leaf curing demand. The evaporator is placed in the dehumidification chamber, one end is connected to the compressor, and the other end is connected to the throttle valve. To remove the water vapor in the hot and humid air discharged from the smoke chamber, one end of the throttle valve is connected to the evaporator, and the other end is connected to the condenser to change the pressure of the working fluid. The air in the evaporator and the condenser conducts heat exchange, and the heating module of the high temperature heat pump unit is used for the curing of tobacco leaves when the solar heating module cannot provide heat or the required temperature in the smoke chamber is 45℃~50℃. The electric heating module includes a solar photovoltaic panel array, an electric auxiliary heater, a circulating fan, and a power supply controller. The electric auxiliary heater is placed on the uppermost layer of the heating chamber near the air outlet. The state automatically selects the power supply of the system and charges the battery pack, controls the switch of the electric auxiliary heater to exchange heat with the air flowing through the electric auxiliary heater, and the circulating fan is placed between the electric auxiliary heater and the condenser. The device control switch is used to adjust the wind speed of the hot air blowing into the smoke chamber, and to send the hot air in the electric auxiliary heating chamber into the smoke chamber. Heat supply during temperature rise and accelerated temperature rise after 60°C.

The dehumidification and waste heat recovery room II has two working modes: full heat recovery and dehumidification, and internal circulation dehumidification. The condensed water generated by dehumidification is collected by the condensed water collection box ⑪. When the baking controller ❾ checks the condensed water level sensor ⑬ When the collected water level is higher than the set upper limit, the drain solenoid valve ⑫ is controlled to open, the condensed water flows out through the condensate water outlet ⑱, and the drain solenoid valve ⑫ is closed when it is lower than the set lower limit; ⑧ is connected to the moisture outlet ⑯, three-way solenoid valve 2 ⑨ is connected to the fresh air supplementary port ⑰, the axial flow fan ⑥ is drawn from the intensive baking room through the air inlet ⑭. The low-temperature and low-humidity fresh air after cooling and dehumidification through the evaporator ⑰ enters the supplementary port ⑩ for heat exchange, so that the high-temperature and high-humidity air becomes low-temperature and high-humidity and is discharged to the outdoor, low-temperature and low-humidity fresh air through the three-way solenoid valve ⑧ from the moisture outlet ⑯ It becomes high temperature and low humidity and enters the heating chamber I through the central air hole of the intermediate heat insulation board ⑤, which not only realizes the dehumidification, but also makes full use of the fresh air energy and the waste heat of dehumidification, which is suitable for the baking stage without precipitation of beneficial substances; In the baking stage of material precipitation, the internal circulation dehumidification work mode should be adopted. The three-way solenoid valve 1⑧ and the three-way solenoid valve 2⑨ are connected to each other, and are disconnected from the moisture exhaust outlet ⑯ and the fresh air supplementary outlet ⑰, and the axial flow fan ⑥ passes through the air inlet. ⑭The high-temperature and high-humidity air drawn from the intensive baking room exchanges heat with the low-temperature and low-humidity air cooled and dehumidified by the evaporator ⑩ in the total heat exchanger ⑦, so that the high-temperature and high-humidity air becomes low-temperature and high-humidity and sent to the evaporator. ⑩Dehumidification, low temperature and low humidity air becomes high temperature and low humidity and enters heating chamber I through the central air hole of the intermediate heat insulation board ⑤, and then returns to the intensive baking room for heating. It not only removes the water vapor precipitated during baking, but also recovers the waste heat and reduces the emission of beneficial substances; full heat recovery and dehumidification, internal circulation dehumidification, and condensate water discharge are all monitored by the baking controller❾ and the power controller⓫ completed below. In the present invention, the dehumidification evaporator is placed in the dehumidification chamber, and is placed vertically. The flow valve is connected to remove the water vapor carried in the air discharged from the smoke-loading chamber, and the dehumidification evaporator is used for the smoke-loading chamber with a small dehumidification amount and in the early and middle stages of tobacco leaf curing. The total heat exchanger is placed in the dehumidifier, which is used to exchange heat between the air that has passed the evaporator and the air discharged from the smoke chamber. temperature of the room exhaust air. The three-way valve is divided into two: three-way solenoid valve 1⑧, through solenoid valve 2⑨, placed on the path from the air in the dehumidification chamber out of the total heat exchanger to the dehumidification evaporator, and the switch of the two three-way valves. All are controlled by the controller. Three-way solenoid valve 1⑧ is used to discharge moisture, three-way solenoid valve 1⑧ is connected to a waste heat recovery device for recycling waste gas, and solenoid valve 2⑨ is used to introduce fresh air. Solenoid valve 1⑧ discharges humid air for dehumidification when the dehumidification capacity in the smoke chamber is large and the dehumidification evaporator fails to meet the dehumidification requirements; the air inlet of the fan placed in the dehumidification chamber is controlled by the controller to promote the air flow in the dehumidification chamber; One end of the drain pipe is connected with the dehumidification drain port, and the other end is connected with the solenoid valve, and the solenoid valve and the drain port and the solenoid valve and the condensate water recovery device are connected to discharge the water formed during the dehumidification process of the evaporator; the solenoid valve Both ends are connected with the drainage pipe, and are controlled by the controller to control the opening/closing of the drainage pipe and the drainage period; the air inlet and the air outlet are respectively used for introducing moist hot air and discharging dry air.

FIG. 2 is a block diagram of an embodiment of the baking controller of the present invention. The baking controller ❾ includes the main control CPU module, which is used to obtain AC power from the power supply controller and provide the main control CPU module and its peripheral circuits with DC working power. Water level sensor ❽, intensive baking room temperature and humidity sensor ❿, condensate water level sensor ⑬ The temperature, humidity and liquid level acquisition module for monitoring the working state of the device, the communication interface A for communicating with the power supply controller, for communicating with the host computer The communication interface B for remote communication is used to store the operation program of the baking controller, the program and data memory A of the baking process data, and the LCD touch screen used to realize the human-computer interaction of the device; the main control CPU module The bit acquisition module collects the working state parameters of the device in real time. According to the baking process curve preset by the LCD touch screen or the host computer, the control amount is obtained by the built-in embedded algorithm program and control program and transmitted to the power supply controller through the communication interface A. to control the corresponding device or module. In the present invention, the CPU module is used to run the algorithm and analyze and process the received signal and then issue an instruction. On the one hand, the signal processing module is used to perform A/D conversion on the collected signal and transmit it to the CPU as the input signal of the control method. On the other hand, it is used to convert the instructions issued by the CPU and D/A, and then transmit them to other modules as input instructions of other modules. Adjust the speed of the frequency conversion motor, the display module and the CPU are connected and communicated with each other to display the information received from the CPU module, and the communication module is used to communicate with other equipment. The memory module is used to store the baking data; the drive module includes a rectifier module, a motor drive module, and a relay module. The rectifier module is used to step down, rectify, and filter the 220V AC power, and then supply other modules as power sources. Voltage, the motor drive module receives the signal after the signal processing module and acts on the relay module through the motor drive module, and drives the motor to work through the relay. The relay module is directly connected with the AC220V voltage and the AC380V voltage, and then the relay is used as a switch device to connect with the electricity The equipment is connected to control the on/off of the electrical equipment; the signal acquisition module includes a temperature sensor module, a temperature and humidity integrated sensor module, and a pressure sensor module. The temperature sensor module has two parts, one part is placed in the hot water inlet of the heat exchanger. The water inlet is used to collect the temperature of the hot water. The collected temperature value is compared with the temperature required in the baking stage of the smoke chamber to determine the opening/closing of the solar heating module. The other part is placed on the compressor to collect the work in the compressor. The temperature value of the liquid inlet and outlet is monitored to monitor the working state of the compressor to protect the compressor. The integrated temperature and humidity sensor module is placed in the smoke chamber to collect the temperature and humidity values in the smoke chamber, and compare the collected temperature and humidity values with the preset values. The set value on the determined baking process curve is compared to determine the heating mode, heat supply, dehumidification period, and dehumidification mode. The pressure sensor module is also used to monitor the working state of the compressor and protect the compressor from normal operation. work under load.

FIG. 3 is a block diagram of an embodiment of a power supply controller of the present invention. Power supply controller⓫ consists of power supply CPU, program data memory B, communication interface C, relay and its drive module, DC-DC converter, power detection I, drive control circuit I, battery pack⓬, power detection II, DC-AC conversion The power supply CPU completes the MPPT control through the drive control circuit I and the DC-DC converter according to the detection results of the power detection I, the power detection II, and the voltage and current detection modules. , Reasonable charging management of the battery pack, and also through the drive control circuit II and the DC-AC converter to invert the voltage of the battery pack to 220V AC output, comprehensively analyze the power of the solar panel, the battery pack and the power consumption of the device, and switch the output through the output. The control circuit is used to automatically select the power supply of the device; the program data memory B is used to store the operation program of the power supply controller, and the communication interface C is used to communicate with the baking controller to realize the circulation of the heat pump compressor ❶ and hot water through the relay and its driving module. Pump ❹, circulating fan ②, axial flow fan ⑥, electric auxiliary heater ①, three-way solenoid valve 1⑧, three-way solenoid valve 2⑨, hot water solenoid valve ❺, and drain solenoid valve ⑫ implement control. In the early photovoltaic power generation system, there was no controller between the photovoltaic cell and the battery. When the voltage of the photovoltaic cell was higher than the voltage across the battery, the battery was charged; when the voltage was lower than the battery voltage, the charging was stopped. However, in this way, it is impossible to know the state of charge of the battery, and it cannot guarantee the charging efficiency and rationality of the battery, which will eventually affect the service life of the battery; in addition, the power generation efficiency of the solar cell cannot be fully utilized. Therefore, it is necessary to optimize the design of the photovoltaic power generation system according to the characteristics of photovoltaic cells and batteries. The photovoltaic system of the present invention mainly includes solar cell panels, DC-DC converters, battery packs, DC-AC converters, output switching control and other parts. Among them, the DC-DC converter completes the MPPT (Maximum Power Point Tracking) control according to the detection results of the power detection I and the power detection II, and also conducts reasonable charging management for the battery pack; the DC-AC converter is It is to invert the voltage of the battery pack to 220V AC output; the power supply CPU comprehensively analyzes the power of the solar panel, the power of the battery pack and the load power consumption, and then selects the load power supply through the output switching control circuit. There are two ways to realize sine wave inversion in the DC-AC conversion circuit: one is to modulate and then boost, that is, to invert the low-voltage direct current into low-voltage power frequency alternating current, and then boost the low-voltage alternating current to 220V alternating current through the step-up transformer. ; The other is to boost and then modulate, that is, to raise the low-voltage DC to a peak value higher than the AC voltage, and then invert and filter to obtain a standard sine wave. Since the step-up transformer in the first implementation method must use a larger power frequency transformer and the power conversion efficiency is low, the present invention selects the second method. There are many forms of topology structure of DC-DC converter, but as the DC boost link of inverter power supply, electrical isolation is required. Through the research of several isolated DC-DC circuits, the push-pull booster circuit is finally adopted.

In the present invention, the clean energy complementary method means that the heated airflow passes through the three heat exchangers: water-heat exchanger ④, condenser ③, electric auxiliary heater ① in sequence, and on the premise that the heat meets the requirements of the baking process , start the solar collector heat supply module first; when the solar collector heat supply is insufficient, start the solar collector heat supply module and the air energy heating module at the same time; if the solar collector heat supply and air energy heating together cannot meet the baking process If required, then start the electric auxiliary heater again; during the whole baking process, the device is powered by the grid by default. If the battery pack⓬ and the photovoltaic panel array⓭ have sufficient power, the device will automatically switch the power supply to solar photovoltaic; four cleaning methods The complementary use of energy can meet the heat demand in the early, middle and late stage of baking in the intensive baking room, so as to achieve the optimization of energy saving.

To sum up, the clean energy complementary intensive heating and dehumidification device of the present invention includes a cabinet composed of a heating chamber I, a dehumidification and waste heat recovery chamber II, and the heat pump compressor installed on the cabinet shell and the compressor are overheated. Sensors, throttle valves, hot water circulation pumps, hot water solenoid valves, power controllers and baking controllers, hot water storage tanks and hot water level sensors placed outside the cabinet, collector tube arrays, photovoltaic panel arrays, The battery pack, the temperature and humidity sensor of the intensive roasting room, and the air inlet and outlet for connecting with the intensive roasting room, the moisture exhaust outlet, the fresh air supplementary outlet, and the condensed water discharge outlet are arranged on the cabinet shell. The beneficial effect of the present invention is that: the three heat exchangers, such as water-heat exchanger, condenser, and electric auxiliary heater, adopt four kinds of clean energy, such as solar heat collection, air energy, grid electric energy or solar photovoltaic, according to the principle of optimal energy saving. The air in the heating chamber I conducts heat exchange, and the baking controller and the power supply controller control the cleaning of the three heat exchangers in the heating chamber I according to the baking process curve, the temperature and humidity in the intensive baking chamber, and the real-time working parameters of the equipment. It can exchange heat with the air in the heating chamber after the waste heat recovery of the dehumidification process in a complementary way to provide heat, which effectively improves the energy utilization rate and reduces the baking energy consumption.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. within the scope of protection.

Claims (3)

1. A clean energy complementary heat supply and dehumidification device for a bulk curing barn comprises a cabinet, a heat pump compressor, a compressor overheating sensor, a throttle valve, a hot water circulating pump, a hot water electromagnetic valve, a power supply pipe controller, a baking controller, a heat storage water tank, a hot water liquid level sensor, a heat collection pipe array, a photovoltaic plate array, a storage battery pack and a bulk curing barn temperature and humidity sensor, wherein the cabinet is composed of a heating chamber, a dehumidification chamber and a waste heat recovery chamber; the method is characterized in that: the system comprises a heating chamber, a dehumidification and waste heat recovery chamber, an electric auxiliary heater, a condenser, a water-heat exchanger and a circulating fan, wherein the heating chamber is internally provided with an electric auxiliary heater, a condenser, a water-heat exchanger and the circulating fan, the three heat exchangers and external equipment form a solar heat collection and supply module, an air energy supply module, a power grid electric energy or solar photovoltaic heat supply module, the dehumidification and waste heat recovery chamber is internally provided with an axial flow fan, a total heat exchanger, a three-way electromagnetic valve I, a three-way electromagnetic valve II, an evaporator, a drainage electromagnetic valve, a condensate water collection box and a condensate water level sensor, the three-way electromagnetic valve I and the three-way electromagnetic valve II are controlled by a power supply pipe controller and a baking controller to form two working modes of total heat recovery and dehumidification and internal circulation, and the drainage electromagnetic; the baking controller comprises a main control CPU module, an AC-DC module, a temperature and humidity and liquid level acquisition module, a communication interface A, a communication interface B and a program and data memory A, LCD touch display screen, wherein the main control CPU module acquires working state parameters of the device in real time through the temperature and humidity and liquid level acquisition module, obtains control quantity through a built-in embedded algorithm program and a control program according to a baking process curve preset through the LCD touch display screen or an upper computer, and transmits the control quantity to the power supply pipe controller through the communication interface A to control corresponding equipment or modules; the power supply controller consists of a power supply CPU, a program data memory B, a communication interface C, a relay and a driving module thereof, a DC-DC converter, an electric quantity detection I, a driving control circuit I, a storage battery pack, an electric quantity detection II, a DC-AC converter, a driving control circuit II, an output switching control circuit and a voltage and current detection module, wherein the power supply CPU completes MPPT control and reasonable charging management of the storage battery pack through the driving control circuit I and the DC-DC converter according to the detection results of the electric quantity detection I, the electric quantity detection II and the voltage and current detection module, inverts the voltage of the storage battery pack into 220V alternating current output through the driving control circuit II and the DC-AC converter, comprehensively analyzes the electric quantity of the solar cell panel, the electric quantity of the storage battery pack and the electricity utilization condition of the device and automatically selects the power supply of the device, the communication interface C receives a control instruction of the baking controller, and controls a heat pump compressor, a hot water circulating pump, a circulating fan, an axial flow fan, an electric auxiliary heater, a three-way electromagnetic valve I, a three-way electromagnetic valve II, a hot water electromagnetic valve and a drainage electromagnetic valve through a relay and a driving module thereof; the hot and humid air separated out in the baking process of the bulk curing barn is connected to the air inlet, is pumped into the dehumidification and waste heat recovery chamber by the axial flow fan for waste heat recovery, enters the heating chamber through the central air hole of the middle heat insulation plate after dehumidification, and returns to the inlet of the bulk curing barn through the air outlet after heat exchange by the three heat exchangers of the water-heat exchanger, the condenser and the electric auxiliary heater in sequence under the action of the circulating fan, the three heat exchangers preferentially start the solar heat collection and supply module on the premise that the heat meets the baking process requirement, when the solar heat collection and supply are insufficient, the solar heat collection and supply module and the air energy and supply module are simultaneously started, if the solar heat collection and the air energy can not meet the baking process requirement together for heat supply, the electric auxiliary heater is restarted, in the whole baking process, the device is supplied with power by a power, the device can automatically switch a power supply to solar photovoltaic, the complementary application of four clean energy sources can meet the heat requirements of the bulk curing barn in the early stage of curing, the middle stage and the later stage, the two working modes of dehumidification and total heat recovery and dehumidification of a waste heat recovery chamber and internal circulation dehumidification are selected by a curing controller and a power supply controller according to a curing process curve, the temperature and the humidity in the bulk curing barn and the real-time working parameters of equipment, and solar heat collection, air energy, power grid electric energy or solar photovoltaic four clean energy sources are controlled to provide energy for three heat exchangers in a heating chamber, so that the energy-saving optimization is realized, the energy utilization rate is effectively improved, the curing energy consumption is reduced, and the loss of beneficial substances in tobacco leaves is reduced.

2. The complementary clean energy bulk curer heating and dehumidifying unit of claim 1, wherein: the heating chamber is powered by solar heat collection, air energy, electric energy of a power grid and solar photovoltaic, and heated air flow enters from a central air hole of the middle heat insulation plate under the negative pressure action of the circulating fan and is discharged through an air outlet; the solar heat collection and supply module comprises a heat collection tube array for converting solar radiation energy into heat energy, a heat insulation and storage water tank for storing heat storage media, a hot water circulating pump for controlling and adjusting water flow, a water-heat exchanger for transferring heat to air in a heating chamber, and a hot water electromagnetic valve for preventing convection heat dissipation of water, wherein under the control of the baking controller and the power tube controller, the hot water circulating pump and the hot water electromagnetic valve are started to enable hot water flowing through the water-heat exchanger to exchange heat with the air in the heating chamber to provide heat for the bulk curing barn; the air energy heat supply module comprises a condenser arranged in a heating chamber, an evaporator arranged in a dehumidification and waste heat recovery chamber, a throttle valve arranged on a cabinet shell, a heat pump compressor and a compressor overheating sensor, wherein the heat pump compressor converts the state of working liquid from low-temperature and low-pressure gaseous state into high-temperature and high-pressure gaseous state under the control of a baking controller and a power supply pipe controller, the working liquid is liquefied into low-temperature and high-pressure liquid state through heat dissipation of the condenser, the low-temperature and high-pressure liquid state flows to the evaporator after passing through the throttle valve, the low-temperature and low-pressure liquid state flows back to the heat pump compressor after absorbing heat and vaporizing due to space mutation in the evaporator, and the condenser performs heat dissipation through heat exchange with air in the heating chamber so as to convert the; the electric network electric energy or solar photovoltaic heat supply module comprises an electric auxiliary heater, a power supply pipe controller, a photovoltaic panel array, a storage battery pack and electric network electric energy, the power supply pipe controller automatically selects a device to supply power and charge the storage battery pack according to the states of the photovoltaic panel array, the electric network and the storage battery pack, and the electric auxiliary heater is controlled by the baking controller according to the baking process requirement and through the power supply pipe controller when the solar heat collection and supply module and the air energy and supply module supply insufficient heat.

3. The complementary clean energy bulk curer heating and dehumidifying unit of claim 1, wherein: the dehumidification and waste heat recovery chamber has two working modes of total heat recovery dehumidification and internal circulation dehumidification, condensate water generated by dehumidification is collected by the condensate water collection box, when the baking controller detects that the collection water level is higher than the set upper limit through the condensate water liquid level sensor, the drain electromagnetic valve is controlled to be opened, the condensate water flows out through the condensate water discharge port, and when the collection water level is lower than the set lower limit, the drain electromagnetic valve is closed; when the total heat recovery dehumidification mode works, the three-way electromagnetic valve one is connected to the dehumidification outlet, the three-way electromagnetic valve two is connected to the fresh air supplement port, the axial flow fan performs heat exchange between high-temperature high-humidity air sucked from the bulk curing barn through the air inlet and low-temperature low-humidity fresh air which enters from the fresh air supplement port and is cooled and dehumidified by the evaporator in the total heat exchanger, so that the high-temperature high-humidity air is changed into low-temperature high-humidity air and is exhausted to the outside from the dehumidification outlet through the three-way electromagnetic valve one, the low-temperature low-humidity fresh air is changed into high-temperature low-humidity air and enters the heating chamber through the central air hole of the middle heat insulation plate, the dehumidification is realized, the fresh air energy and the dehumidification waste; an internal circulation dehumidification working mode is preferably adopted at the baking stage when beneficial substances are separated out, the three-way electromagnetic valve I and the three-way electromagnetic valve II are mutually communicated and disconnected with the dehumidification outlet and the fresh air supplement port, high-temperature high-humidity air pumped from the bulk curing barn through the air inlet is subjected to heat exchange with low-temperature low-humidity air cooled and dehumidified by the evaporator in the total heat exchanger by the axial flow fan, so that the high-temperature high-humidity air is changed into low-temperature high-humidity air and is sent to the evaporator for dehumidification, the low-temperature low-humidity air is changed into high-temperature low-humidity air and enters the heating chamber through the central air hole of the middle heat insulation plate for heating and then returns to the bulk curing barn, and airflow of the heat supply dehumidification device and the bulk curing barn forms a closed internal circulation loop, so that water vapor separated; the full heat recovery dehumidification, the internal circulation dehumidification and the condensed water discharge are all completed under the monitoring of the baking controller and the power supply pipe controller.

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