CN106643107A - Control method and control device of heat pump type dual-cycle hot air drying system - Google Patents
Control method and control device of heat pump type dual-cycle hot air drying system Download PDFInfo
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- CN106643107A CN106643107A CN201611169010.3A CN201611169010A CN106643107A CN 106643107 A CN106643107 A CN 106643107A CN 201611169010 A CN201611169010 A CN 201611169010A CN 106643107 A CN106643107 A CN 106643107A
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Classifications
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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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a control method and a control device of a heat pump type dual-cycle hot air drying system and relates to an air or gas supply or control device for drying a solid material or product, in particular to a control method and a control device of a heat pump type dual-cycle hot air drying system. The control method comprises the following steps that a temperature control parameter is configured, and a preset temperature control curve parameter is saved; air outlet temperature and drying room temperature and humidity are detected and monitored; the set temperature is dynamically adjusted according to a preset temperature control curve; a dual-cycle dynamic operating mode of the system is selected according to current set temperature. The control device utilizes a microprocessor to achieve program control, an inner cycle loop for large-volume circulation is established, condensing latent heat of a refrigerant is fully absorbed to improve basic air temperature, and high-temperature hot air is obtained through secondary heat exchange of an air supply circulation loop; the air outlet volume is automatically adjusted and controlled by adopting dual-path air volume to ensure the change demand for air outlet temperature and drying room temperature. The reliability of the product can be ensured, the unit energy efficiency can be also achieved, and the purpose of energy consumption is reduced.
Description
Technical field
The present invention relates to the supply of the air or gas of drying solid material or product or control device, more particularly to one
Plant the control method and control device of heat-pump-type hot air drying system.
Background technology
Need the place of hot-air seasoning more and more in the market, such as tobacco drying, grain heat-drying, medicinal material drying, fruit
The drying such as vegetable drying place, drying is mainly dried with coal stove, steam stove, electric furnace.Coal, gas are all non-renewable strategic performances
Source, is not the direction of country's popularization, and electric furnace is also not suitable for carrying out batch popularization because the big, operating cost that consumes energy is high.Northern country
All it is that heating is carried out with coal stove manufacture hot water before heating, country replaces coal stove to popularize in an all-round way in rural area using heat pump, it was demonstrated that
Heat pump still has very big market prospects in terms of heating.Heat pump also has very big sending out in the place of above-mentioned hot-air seasoning demand
Exhibition potentiality.By taking the baking equipment for preparatory treatment of tobacco of China as an example, traditional civil structure natural ventilation type barn is continued to use for a long time, although Jing is normal
There are some to improve transformation, but still without departing from traditional form.China is introduced with fuel oil, fire coal directly from the nineties in 20th century
Heat supply and the dense drying equipment of boiler heat supplying, in various places, experiment and demonstration has reacted easy baking operating technology, saving recruitment, energy
Ensure the advantages such as baking quality of tobacco, but one-time investment is relatively costly, and fuel consumption is larger, wants spread to have very at no distant date
Big difficulty, in practice it has proved that be not suitable for China's national situation, it is impossible to received by production.Tobacco flue-curing is an a large amount of heat dissipation process, general
Logical barn coal direct heating, heat utilization efficiency is low, and coal consumption is high, generally dries 1kg tobacco leaves coal consumption and marks coal in 1.5～2.5kg,
Environmental pollution is serious.A kind of Chinese invention patent " tobacco baking room with air source heat pump as thermal source " (patent of invention number：
200910044468.X, Authorization Notice No.：CN101940358B) disclose a kind of tobacco with air source heat pump as thermal source to bake
Room, including being provided with the heating chamber of fresh wind port and being provided with the hothouse of temperature, moisture probe, barn top is provided with moisture exhausting port, also wraps
The span of ratio of air source heat pump and condenser fan, condenser heat exchange area and compressor power input is included in 7-
Between 15m2/kw, condenser and its air draught type breeze fan device are indoor in the heating；The hothouse and/or heating chamber
It is provided with heat-insulation layer.The technical scheme makes air source heat pump using air source heat pump and solar energy as the novel heat source of tobacco baking room
Obtained great expansion with the range of application of solar energy, produce cigarette district promote the use of on a large scale can reduce air, soil and
The sulfur content of tobacco leaf, improves quality of tobacco, has positive effect to energy saving, environmental protection.But, in the Roaster of tobacco
Skill aspect, " double low " baking process of five-part form, seven segmentations and six segmentations etc. has been researched and proposed in various places in succession.Every kind of baking process
All tobacco flue-curing overall process is divided into into changing yellow stage, fixation stage, drying muscle stage, having clear and definite humiture to refer to all is specified to each period
Mark, the multisection type stoving process figure of part kind tobacco shown in Figure 9.It is thin because baking process paragraph is divided more, especially
It is tobacco leaf change is divided level it is many and obscure, non-quantitative, without simple clearly key point, technical sophistication, be not easy to slap
Hold, existing heat pump drying system can not similarly meet the requirement of tobacco roasting.
On the other hand, because some high temperature drying part-time sections need more than 80 DEG C of hot blast leaving air temp, how to carry
It is another problem that heat-pump-type hot air drying system needs to solve for high-temperature hot-air.A kind of Chinese invention patent application " superelevation
Warm heat pump drying system " (application for a patent for invention number：201510433292.2, publication number：CN105021015A) one kind is disclosed
Superhigh temperature heat pump drying system, including drying room, the air -return duct connected with the air outlet and return airway of the drying room, are arranged at back
Circulating fan in air channel, the exhausting duct connected with air -return duct is arranged at the air exhauster of the passway of exhausting duct, is arranged at return air
The air heat recovery device of the intersection of road and exhausting duct, and at least two sets source pumps used in parallel；The invention is adopted
Two sets or more than two sets source pump parallel operations, at the drying operation process initial stage by the low-grade surrounding air heat pair of absorption
Drying room carries out heater riser temperature, and the hot and humid air to a certain extent afterwards to discharging in drying room that heats up dehumidifies, to it
In contained sensible heat and latent heat carry out maximized recovery.The system utilizes the cycle fluid temperature range of two sets of source pumps
Difference relatively higher wind pushing temperature is provided, while the evaporating temperature for ensureing Drying unit is fully improved.But, the existing skill
Art scheme adopts two sets of source pumps, and this not only causes drying room equipment investment to significantly improve, by cycle fluid temperature range
Difference improves the complexity that wind pushing temperature also add plant maintenance.Simultaneously as in drying course drying room heat consumption demand
Change is very big, and this does not only result in the frequent start-stop of source pump, increases the operation power consumption of unit, reduces the efficiency of unit, can also
Make the temperature change in drying room become big, or even quality that is excessive and affecting finished product can be changed because of drying temperature.
The content of the invention
The invention aims to a kind of heat-pump-type Two-way Cycle hot air drying system is provided, for solving existing heat pump hot blast
Drying system provides the technical problem existed during high-temperature hot-air.
The present invention solves the technical scheme that adopted of above-mentioned technical problem：
A kind of heat-pump-type Two-way Cycle hot air drying system control method, it is characterised in that comprise the following steps：
S100：Configuration temperature control parameter, preserves default temperature control parameter of curve；
S200：Detection and monitoring leaving air temp and drying room humiture；
S300：According to default temperature control curve dynamic adjustment design temperature；
S400：The Two-way Cycle dynamic operational of system is selected according to current design temperature.
Described heat-pump-type Two-way Cycle hot air drying system includes the hot blast that air-supply closed circuit and interior circulation loop are constituted
Double circulation loop, adjusts the air-supply regulating valve and interior circulation air-valve of hot blast double circulation loop air circulation；It is connected in series in refrigeration
The latent heat condenser and sensible heat condenser of agent major cycle pipeline；Connected by off-load magnetic valve, first throttle valve and second throttle
The two-way off-load branch road of composition；
Described Two-way Cycle dynamic operational includes single cycle conventional heating pattern, Two-way Cycle step-down off-load pattern, double
Circulation temperature lowering off-load pattern and Two-way Cycle two-way off-load pattern, wherein：
Single cycle conventional heating pattern：Off-load closed electromagnetic valve, cold-producing medium is circulated along major cycle pipeline；Interior circulation air-valve is opened
Degree 0%, control valve opening 100% of blowing, described Two-way Cycle hot air drying system produces out wind-warm syndrome by closed circuit of blowing
Low temperature hot blast of the degree less than 45 DEG C；Described control device is controlled by the run time interval or running frequency for changing compressor
Leaving air temp；
Two-way Cycle is depressured off-load pattern：Off-load magnetic valve and second throttle are opened, and first throttle valve is closed, and cold-producing medium exists
While circulation along major cycle pipeline, a part of Jing off-loads magnetic valve is shunted and is directly entered vapor-liquid separation by second throttle
Device；Circulate in the wind valve opening 50% to 55%, control valve opening 50% to 45% of blowing；Described control device is sent by regulation
The air circulation control leaving air temp in wind closed circuit and interior circulation loop, produces the middle warm that leaving air temp is 45 to 65 DEG C
Wind；
Two-way Cycle cooling off-load pattern：Off-load magnetic valve and first throttle valve are opened, and second throttle is closed, and cold-producing medium exists
While circulation along major cycle pipeline, a part of Jing off-loads magnetic valve shunting is simultaneously entered by the first throttle valve in parallel with expansion valve
Enter evaporimeter；Circulate in the wind valve opening 55% to 65%, control valve opening 45% to 35% of blowing；Described control device passes through
The air circulation control leaving air temp in air-supply closed circuit and interior circulation loop is adjusted, it is in 65 to 75 DEG C to produce leaving air temp
High-temperature hot-air；
Two-way Cycle two-way off-load pattern：Off-load magnetic valve and first throttle valve, second throttle are opened, and cold-producing medium is along main
While circulation line is circulated, the shunting of Jing off-loads magnetic valve, the cold-producing medium part after shunting is by parallel with expansion valve the
One choke valve enters evaporimeter, and another part is directly entered vapour liquid separator by second throttle；Circulate in the wind valve opening
65% to 75%, control valve opening 35% to 25% of blowing；Described control device is by adjusting air-supply closed circuit and interior following
The air circulation control leaving air temp of loop back path, produces high-temperature hot-air of the leaving air temp higher than 75 DEG C.
One kind preferably technical scheme of the heat-pump-type Two-way Cycle hot air drying system control method of the present invention, its feature exists
Include following control operation action in described step S400：
S420：If demand heat consumption ＜ 25%, start frequency-changeable compressor, close the first solenoid valve block and the second magnetic valve
Group, into frequency conversion constant volume pattern；
S440：If demand heat consumption ＜ 35%, start frequency-changeable compressor, close the first solenoid valve block, open the second electromagnetism
Valve group, into frequency conversion varying capacity pattern；
S460：If demand heat consumption >=70%, goes to step S480；Otherwise, while starting invariable frequency compressor and frequency conversion compression
Machine, opens the first solenoid valve block, closes the second solenoid valve block, enters and determines frequency varying capacity+frequency conversion constant volume parallel running mode；
S480：Start invariable frequency compressor and frequency-changeable compressor simultaneously, close the first solenoid valve block, open the second magnetic valve
Group, enters and determines frequency constant volume+frequency conversion varying capacity parallel running mode.
Another object of the present invention is to provide for a kind of for realizing above-mentioned heat-pump-type Two-way Cycle hot air drying system control
The control device of method processed.The present invention solves the technical scheme that adopted of above-mentioned technical problem：
A kind of heat pump hot air drying system control for realizing above-mentioned heat-pump-type Two-way Cycle hot air drying system control method
Device processed, it is characterised in that include for configuring temperature control parameter and preserving the operating parameter setting of default temperature control parameter of curve
Module, for detecting and monitoring the drying room temperature and humidity monitor module and wind pushing temperature monitoring mould of leaving air temp and drying room humiture
Block, for driving the valve area controller of air-valve, and for controlling the source pump controller of compressor and magnetic valve；Institute
The input of drying room temperature and humidity monitor module is stated, operating parameter setting module, dry-bulb temperature sensor and wet-bulb temperature is connected to
Sensor；The output end of the drying room temperature and humidity monitor module is connected to source pump controller；Source pump controller it is defeated
Go out the control magnetic valve that end is connected in compressor and refrigerant line；The input of the wind pushing temperature monitoring module, connection
To operating parameter setting module and leaving air temp sensor；The output end of the wind pushing temperature monitoring module is connected to valve area
Controller, the output end of valve area controller is connected to interior circulation air-valve and air-supply regulating valve.
One kind preferably technical scheme of the heat pump hot air drying system control device of the present invention, it is characterised in that described
Control device realizes programme-control using the chip microprocessor with multi-channel A/D translation interfaces and multi-channel PWM output interface, institute
Operating parameter setting module, drying room temperature and humidity monitor module and the wind pushing temperature monitoring module stated is the software that microprocessor is provided
Functional module；The A/D that described dry-bulb temperature sensor, leaving air temp sensor and wet bulb temperature sensor pass through microprocessor
Translation interface is connected to chip microprocessor；Described control device is exported using the PWM of microprocessor, is valve area control
Device provides valve area controlled output signal, and provides the change of frequency-changeable compressor and frequency conversion fan by source pump controller
Frequency controlled output signal；Described control device is using the PIO program to ports output solenoid valve of microprocessor and opening for compressor
Output signal is closed, switch control rule is performed to the compressor in system and magnetic valve by source pump controller.
The invention has the beneficial effects as follows：
1st, heat-pump-type Two-way Cycle hot air drying system control method of the invention and its control device, using microprocessor reality
Existing programme-control, by the interior circulation loop for setting up Wind Volume circulation, the condensation latent heat for fully absorbing cold-producing medium improves basic wind
Temperature, Jing air-supply closed circuit secondary heat exchanges produce high-temperature hot-air；Using two-way air quantity auto-adjustment control air-out volume, it is ensured that go out
Air temperature drying room temperature change demand；Both the reliability of product had been can guarantee that, raising unit efficiency can have been reached again, reduced energy resource consumption
Purpose.
2nd, heat-pump-type Two-way Cycle hot air drying system control method of the invention and its control device, using multi-segment type temperature control
Curved configuration drying room temperature control parameter, according to temperature control curve dynamic adjustment design temperature, and according to current adjustment design temperature
The operational mode of selection system, control Two-way Cycle hot air drying system realizes that fully-automatic intelligent runs, without the need for manual control；Can be with
Meet the high-precision control requirement of temperature in baking process, humidity.
Description of the drawings
Fig. 1 is the double circulation structure schematic diagram of heat-pump-type Two-way Cycle hot air drying system；
Fig. 2 is the source pump schematic diagram of heat-pump-type Two-way Cycle hot air drying system；
Fig. 3 is that heat pump hot air drying system determines frequency frequency conversion double circulation structure schematic diagram；
Fig. 4 is the source pump schematic diagram of frequency conversion capability-variable heat pump hot air drying system；
Fig. 5 is the control device schematic diagram of frequency conversion capability-variable heat pump hot air drying system；
Fig. 6 is the control method flow chart of heat-pump-type Two-way Cycle hot air drying system；
Fig. 7 is the control method flow chart of frequency conversion capability-variable heat pump hot air drying system；
Fig. 8 is multi-segment type temperature control curve and temperature control parameter configuration interface schematic diagram；
Fig. 9 is the multisection type stoving process figure of part kind tobacco flue-cured tobacco；
Figure 10 is each period heat consumption curve map during flue-cured tobacco.
The reference of each part in above figure：1 is compressor, and 1-1 is invariable frequency compressor, and 1-2 is frequency-changeable compressor, 2-
1 be the first condenser, 2-2 be the second condenser, 2-3 be the 3rd condenser, 21 be latent heat condenser, 22 be sensible heat condenser, 3
For expansion valve, 3-1 is the first expansion valve, and 3-1A is the first balance pipe, and 3-1B is the first temperature-sensitive bag, and 3-2 is the second expansion valve, 3-
2A is the second balance pipe, and 3-2B is the second temperature-sensitive bag, and 4 is evaporimeter, and 4-1 is the first evaporimeter, and 4-2 is the second evaporimeter, 4-3
For the 3rd evaporimeter, 5 is vapour liquid separator, and 5-1 is the first gas-liquid separator, and 5-2 is the second gas-liquid separator, and 6 is evaporimeter
Blower fan, 7-1 is the first solenoid valve block, and 7-2 is the second solenoid valve block, and 8 is pressure fan, and 10 is first throttle valve, and 11 is second section
Stream valve, 12 is off-load magnetic valve, and 23 is interior circulation air-valve, and 24 are air-supply regulating valve, and 100 is source pump, and 200 is air-heater
Cabinet, 210 is supply air duct, and 220 is interior circulation air channel, and 230 is return airway, and 400 is drying room, and 500 is control device, and 510 are
Operating parameter setting module, 520 is drying room temperature and humidity monitor module, and 521 is dry-bulb temperature sensor, and 522 are wet-bulb temperature biography
Sensor, 530 is wind pushing temperature monitoring module, and 531 is leaving air temp sensor, and 540 is valve area controller, and 550 is heat pump
Generator set controller.
Specific embodiment
For better understanding of the above-mentioned technical proposal of the present invention, carry out with reference to the accompanying drawings and examples further
Describe in detail.Fig. 1 is one embodiment of the heat-pump-type Two-way Cycle hot air drying system of the present invention, including source pump 100, heat
Fan cabinet 200 and drying room 400, and for realizing the control device 500 that hot air drying system microprocessor is controlled；Such as Fig. 1 institutes
Show, described heat-pump-type Two-way Cycle hot air drying system also includes that the hot blast pair that air-supply closed circuit and interior circulation loop are constituted is followed
Loop back path；
The air-supply regulating valve 24 that the inside of the hot blast rack 200 is arranged, based on hot blast rack 200 is separated wind-warm syndrome area and
Reheating heating zone；
The latent heat condenser 21 for being placed in basic wind-warm syndrome area and the sensible heat condenser 22 for being placed in reheating heating zone, by heat pump machine
The refrigerant line of group 100 is connected in series composition double series condenser；The high temperature liquid refrigerant that compressor is discharged, first sends into
Latent heat condenser 21 is re-fed into after the heat exchange cooling of sensible heat condenser 22；
Described air-supply closed circuit enters hot blast rack 200 from the Jing return airways 230 of drying room 400, by being placed in basis
The latent heat condenser 21 of wind-warm syndrome area inlet side enters pressure fan 8, and then Jing air-supplies regulating valve 24 reaches the sensible heat of reheating heating zone
Condenser 22, finally by supply air duct 210 drying room 400 is sent into；
Described interior circulation loop enters interior circulation air channel 220, Ran Houjing from the exhaust outlet Jing interior circulations air-valve 23 of pressure fan 8
Return airway 230 enters hot blast rack 200, reaches the latent heat condenser 21 of basic wind-warm syndrome area inlet side, eventually passes back to pressure fan 8
Air entry；The air-flow in basic wind-warm syndrome area is entered from drying room 400, a part is transmitted back to return airway by interior circulation air channel 220
230, latent heat condenser 21 is sent to after mixing with drying room return air, the interior circulation loop of Wind Volume circulation is formed, another part Jing send
Wind regulating valve 24 is sent to sensible heat condenser 22 and carries out secondary heat exchange, and sends into drying room 400 by supply air duct 210, forms little wind
The air-supply closed circuit of amount circulation.Latent heat in cold-producing medium is little by little transferred to the big of interior circulation loop by latent heat condenser 21
In air quantity circulating current, by fully absorbing the condensation latent heat of cold-producing medium basic wind-warm syndrome is improved；Compressor discharge temperature is up to 130
DEG C gaseous refrigerant in sensible heat, the secondary heat exchange of Jing sensible heats condenser 22 be transferred to air-supply closed circuit little air quantity circulating air
In stream；Sensible heat condenser 22 can absorb 30% or so system heat energy, and the leaving air temp that can make hot blast rack 200 reaches 90
℃。
Described control device 500 is adjusted air-supply and is followed by control interior circulation air-valve 23 and the aperture of air-supply regulating valve 24
Loop back path and the air circulation in interior circulation loop, control the leaving air temp of hot blast rack 200.
The embodiment of the source pump of the heat-pump-type Two-way Cycle hot air drying system of the invention according to Fig. 2, it is described
Source pump 100 including cold-producing medium major cycle pipeline and be connected to the two-way off-load branch road of major cycle pipeline；Described master
Circulation line passes sequentially through sensible heat condenser 22, latent heat condenser 21, expansion valve 3, evaporation from the beginning of the exhaust outlet of compressor 1
Device 4 and vapour liquid separator 5, return to the air entry of compressor 1；Described two-way off-load route off-load magnetic valve 12, first segment
Stream valve 10 and the connection composition of second throttle 11：The entrance of the off-load magnetic valve 12 is parallel-connected to the system of latent heat condenser 21
Refrigerant circuit is exported, and the entrance of the first throttle valve 10 and second throttle 11 is parallel-connected to going out for off-load magnetic valve 12
Mouthful, the outlet of the first throttle valve 10 is connected to the entrance of evaporimeter 4, and the outlet of the second throttle 11 is connected to vapour-liquid
The entrance of separator 5；Described control device 500 is connected to first throttle valve 10, second throttle 11 and off-load magnetic valve 12,
The refrigerant circulation line of source pump is changed according to leaving air temp dynamic, the row of compressor 1 is reduced by two-way off-load branch road
Temperature degree and high side pressure, realize the Two-way Cycle dynamic operational of hot air drying system.
One embodiment of heat-pump-type Two-way Cycle hot air drying system of the invention, described Two-way Cycle dynamic operation
Pattern includes single cycle conventional heating pattern, Two-way Cycle step-down off-load pattern, Two-way Cycle cooling off-load pattern and Two-way Cycle two-way
Off-load pattern, wherein：
Single cycle conventional heating pattern：Off-load magnetic valve 12 is closed, and cold-producing medium is circulated along major cycle pipeline；Interior circulation air-valve
23 apertures 0%, the aperture 100% of regulating valve 24 of blowing, described Two-way Cycle hot air drying system is produced by closed circuit of blowing
Low temperature hot blast of the leaving air temp less than 45 DEG C；Described control device 500 is by changing the run time interval of compressor 1 or transporting
Line frequency controls leaving air temp；
Two-way Cycle is depressured off-load pattern：Off-load magnetic valve 12 and second throttle 11 are opened, and first throttle valve 10 is closed, system
While circulating along major cycle pipeline, a part of Jing off-loads magnetic valve 12 is shunted and directly entered by second throttle 11 cryogen
Enter vapour liquid separator 5, to reduce high side pressure；The aperture 50% to 55% of interior circulation air-valve 23, the aperture of regulating valve 24 of blowing
50% to 45%；Described control device 500 is controlled out by adjusting the air circulation of air-supply closed circuit and interior circulation loop
Air temperature, produces the middle warm wind that leaving air temp is 45 to 65 DEG C；
Two-way Cycle cooling off-load pattern：Off-load magnetic valve 12 and first throttle valve 10 are opened, and second throttle 11 is closed, system
While circulating along major cycle pipeline, a part of Jing off-loads magnetic valve 12 is shunted and by parallel with expansion valve 3 cryogen
One choke valve 10 enters evaporimeter 4, to reduce delivery temperature；The aperture 55% to 65% of interior circulation air-valve 23, regulating valve 24 of blowing
Aperture 45% to 35%；The air circulation control that described control device 500 passes through regulation air-supply closed circuit and interior circulation loop
Air temperature is made, the high temperature hot blast that leaving air temp is 65 to 75 DEG C is produced；
Two-way Cycle two-way off-load pattern：Off-load magnetic valve 12 and first throttle valve 10, second throttle 11 are opened, cold-producing medium
While circulating along major cycle pipeline, Jing off-loads magnetic valve 12 is shunted, cold-producing medium after a shunting part by with expansion valve 3
First throttle valve 10 in parallel enters evaporimeter 4, and another part is directly entered vapour liquid separator 5 by second throttle 11；It is interior
The circulation aperture 65% to 75% of air-valve 23, the aperture 35% to 25% of regulating valve 24 of blowing；Described control device 500 is by adjusting
The air circulation control leaving air temp in air-supply closed circuit and interior circulation loop, produces high warm of the leaving air temp higher than 75 DEG C
Wind.
It is big for the heat consumption changes in demand of drying room in drying course, cause what the frequent start-stop of unit and efficiency reduced to ask
Topic, in one embodiment of the heat pump hot air drying system of the present invention, described source pump 100 is also included using frequency conversion pressure
The second refrigerant circulation line of contracting machine；The 3rd condenser 2-3 being connected in second refrigerant circulation line is arranged on hot blast
In rack 200, the air side in the basic wind-warm syndrome area is placed in, referring to Fig. 3；As the demand heat consumption ＜ 40% of drying room, fixed frequency
Compressor stops, and frequency-changeable compressor starts, and heat pump hot air drying system is with the operation of conventional inverter heat pump mode；When the demand of drying room
During heat consumption >=40%, invariable frequency compressor and frequency-changeable compressor start simultaneously, and heat pump hot air drying system is determining frequency+frequency conversion two-shipper
Paralleling model runs；When the design temperature of air-supply is higher than 75 DEG C, heat pump hot air drying system is with Two-way Cycle two-way off-load pattern
Operation, the three-level of described latent heat condenser 21, the 3rd condenser 2-3 and the formation hot blast of sensible heat condenser 22 rack 200 exchanges heat
Structure；The circulating current in interior circulation loop is exchanged heat twice by the condenser 2-3 of latent heat condenser 21 and the 3rd, further improves base
The basic wind-warm syndrome in plinth wind-warm syndrome area, the leaving air temp for making hot blast rack 200 brings up to more than 75 DEG C.
One embodiment of the source pump of the frequency conversion capability-variable heat pump hot air drying system of the present invention is as shown in figure 4, institute
The source pump 100 stated includes invariable frequency compressor 1-1 and frequency-changeable compressor 1-2, and what is be connected in parallel determines frequency circulation line and frequency conversion
Circulation line, and by the first solenoid valve block 7-1 and the heat exchanger transfiguration branch road of the second solenoid valve block 7-2 control connection；
Described determines frequency circulation line from the beginning of the exhaust outlet of invariable frequency compressor 1-1, pass sequentially through the first condenser 2-1,
First expansion valve 3-1, the first evaporimeter 4-1 and the first gas-liquid separator 5-1, return to the air entry of invariable frequency compressor 1-1；
Described frequency conversion circulation line from the beginning of the exhaust outlet of frequency-changeable compressor 1-2, pass sequentially through the 3rd condenser 2-3,
Second expansion valve 3-2, the 3rd evaporimeter 4-3 and the second gas-liquid separator 5-2, return to the air entry of frequency-changeable compressor 1-2；
Described heat exchanger transfiguration branch road includes the second condenser 2-2 and the second evaporimeter 4-2, the second described condenser
2-2 is parallel-connected to the first condenser 2-1 by the first solenoid valve block 7-1, and by the second solenoid valve block 7-2 is parallel-connected to
Three condenser 2-3；The second described evaporimeter 4-2 is parallel-connected to the first evaporimeter 4-1 by the first solenoid valve block 7-1, leads to
Cross the second solenoid valve block 7-2 and be parallel-connected to the 3rd evaporimeter 4-3；
Described control device 500 is connected to the first solenoid valve block 7-1 and the second solenoid valve block 7-2, by control first
The opening state of solenoid valve block 7-1 and the second solenoid valve block 7-2, changes the connected mode of heat exchanger transfiguration branch road, controls heat pump
Hot air drying system enters two-shipper transfiguration operational mode；Described control device 500 controls frequency conversion pressure according to air-out design temperature
The running frequency of contracting machine 1-2；The frequency conversion capability-variable heat pump hot air drying system of the present invention, is expanded by varying capacity operational mode and is changed
The heat exchange area of hot device (including evaporimeter and condenser), can significantly improve the overall heat exchange effect of source pump 100, improve
System energy efficiency.
One embodiment of frequency conversion capability-variable heat pump hot air drying system of the invention, described two-shipper transfiguration operation
Pattern includes frequency conversion constant volume pattern, and frequency conversion varying capacity pattern determines frequency varying capacity+frequency conversion constant volume parallel running mode, frequency conversion
Constant volume pattern+frequency conversion varying capacity parallel running mode, and determine frequency constant volume+frequency conversion varying capacity parallel running mode, wherein：
Frequency conversion constant volume pattern：Frequency-changeable compressor 1-2 starts, and cold-producing medium is circulated along frequency conversion circulation line, the first magnetic valve
Group 7-1 and the second solenoid valve block 7-2 are turned off；
Frequency conversion varying capacity pattern：Frequency-changeable compressor 1-2 starts, and cold-producing medium is circulated along frequency conversion circulation line；First magnetic valve
Group 7-1 is closed, and the second solenoid valve block 7-2 is opened, and described heat exchanger transfiguration branch circuit parallel connection is connected to frequency conversion circulation line, frequency conversion
Compressor 1-2 enters varying capacity operational mode；
Determine frequency varying capacity+frequency conversion constant volume parallel running mode：Invariable frequency compressor 1-1 and frequency-changeable compressor 1-2 is opened simultaneously
Dynamic, simultaneously frequency circulation line and the circulation of frequency conversion circulation line two-way are determined in edge to cold-producing medium；First solenoid valve block 7-1 is opened, and second is electric
Magnet valve group 7-2 is closed, and described heat exchanger transfiguration branch circuit parallel connection is connected to determines frequency circulation line, and invariable frequency compressor 1-1 is entered and become
Capacity operational mode；
Determine frequency constant volume+frequency conversion varying capacity parallel running mode：Invariable frequency compressor 1-1 and frequency-changeable compressor 1-2 is opened simultaneously
Dynamic, simultaneously frequency circulation line and the circulation of frequency conversion circulation line two-way are determined in edge to cold-producing medium；First solenoid valve block 7-1 is closed, and second is electric
Magnet valve group 7-2 is opened, and described heat exchanger transfiguration branch circuit parallel connection is connected to frequency conversion circulation line, and frequency-changeable compressor 1-2 is entered and become
Capacity operational mode.
According to an embodiment for being preferred for needing the heat pump hot air drying system of higher drying temperature, the air-heater
Cabinet 200 includes basic wind-warm syndrome area and the reheating heating zone being separated to form by air-supply regulating valve 24；Described the first condenser 2-1 and
The refrigerant line of the second condenser 2-2 is connected in series composition double series condenser；First condenser 2-1 is condensed as sensible heat
Device is placed in reheating heating zone, and the second condenser 2-2 is placed in the inlet side in basic wind-warm syndrome area, the 3rd condenser as latent heat condenser
2-3 is placed in the air side in basic wind-warm syndrome area；Described hot blast rack 200 arranges the interior circulation loop in the basic wind-warm syndrome area of connection, ginseng
See Fig. 3；The hot blast of heat pump hot air drying system output, by interior circulation loop and the secondary heat exchange of air-supply closed circuit, makes heat
The leaving air temp of fan cabinet 200 can reach 90 DEG C.
The present invention frequency conversion capability-variable heat pump hot air drying system control device 500 one embodiment as shown in figure 5,
Including for configuring temperature control parameter and preserving the operating parameter setting module 510 of default temperature control parameter of curve, for detecting
With monitoring leaving air temp and drying room humiture drying room temperature and humidity monitor module 520 and wind pushing temperature monitoring module 530, for driving
The valve area controller 540 of dynamic air-valve, and for controlling the source pump controller 550 of compressor and magnetic valve；It is described
The input of drying room temperature and humidity monitor module 520, is connected to operating parameter setting module 510, dry-bulb temperature sensor 521 and wet
Ball temperature sensor 522；The output end of the drying room temperature and humidity monitor module 520 is connected to source pump controller 550；Heat pump
The output end of generator set controller 550 is connected to the control magnetic valve in compressor and refrigerant line；The wind pushing temperature monitoring
The input of module 530, is connected to operating parameter setting module 510 and leaving air temp sensor 531；The wind pushing temperature monitoring
The output end of module 530 is connected to valve area controller 540, and the output end of valve area controller 540 is connected to interior circulation
Air-valve 23 and air-supply regulating valve 24.Described control magnetic valve includes off-load magnetic valve 12, first throttle valve 10, second throttle
11st, the first solenoid valve block 7-1 and the second solenoid valve block 7-2.
One embodiment of frequency conversion capability-variable heat pump hot air drying system of the invention, described control device 500
Programme-control, described operation are realized using the chip microprocessor with multi-channel A/D translation interfaces and multi-channel PWM output interface
Parameter setting module 510, drying room temperature and humidity monitor module 520 and wind pushing temperature monitoring module 530 are the soft of microprocessor offer
Part functional module；Described dry-bulb temperature sensor 521, leaving air temp sensor 531 and wet bulb temperature sensor 522 are by micro-
The A/D translation interfaces of processor are connected to chip microprocessor；Described control device 500 is exported using the PWM of microprocessor,
Valve area controlled output signal is provided for valve area controller 540, and frequency conversion is provided by source pump controller 550
The VFC output signal of compressor and frequency conversion fan；Described control device 500 utilizes the PIO program to ports of microprocessor
The switch output signal of output squeezing machine and magnetic valve, by source pump controller 550 to the compressor and electromagnetism in system
Valve performs switch control rule.
Fig. 6 is one embodiment of the heat-pump-type Two-way Cycle hot air drying system control method of the present invention, including following step
Suddenly：
S100：Configuration temperature control parameter, preserves default temperature control parameter of curve；
S200：Detection and monitoring leaving air temp and drying room humiture；
S300：According to default temperature control curve dynamic adjustment design temperature；
S400：The current Two-way Cycle dynamic operational of system is selected according to design temperature.
Embodiment 1：
One embodiment of multi-segment type temperature control curve and temperature control parameter configuration interface is as shown in figure 8, in the embodiment
Multi-segment type temperature control curve be 10 segmentation heating curves, control device 500 is by configuring the design temperature of each time period and steady
Warm time, control Two-way Cycle hot air drying system realizes that automatic intelligent runs, without the need for manual control.
The embodiment of the heat-pump-type Two-way Cycle hot air drying system control method of the invention according to Fig. 6, it is described
Step S400 includes following control operation action：
S420：If 45 DEG C of design temperature ＜, off-load magnetic valve 12 is closed, into single cycle conventional heating pattern；This pattern
The aperture of lower interior circulation air-valve 23 is 0%, and the aperture of regulating valve 24 of blowing is 100%；Compressor 1 is controlled according to leaving air temp
Run time is spaced or running frequency；The temperature control scope of this step corresponds to the 1st to 5 of 10 segmentation heating curves shown in Fig. 8
Section, setting leaving air temp is respectively 20 DEG C, 25 DEG C, 30 DEG C, 35 DEG C and 40 DEG C.
S440：If design temperature is 65 DEG C of ＜, off-load magnetic valve 12 and second throttle 11 are opened, close first throttle valve
10, it is depressured off-load pattern into Two-way Cycle；Air-out is controlled by adjusting the air circulation of air-supply closed circuit and interior circulation loop
Temperature；The aperture of interior circulation air-valve 23 is 40～60% under this pattern, and the aperture of regulating valve 24 of blowing is 60～40%；This step
Temperature control scope corresponding to the 6th section and the 7th section of 10 segmentation heating curves shown in Fig. 8, set leaving air temp and be respectively 50 DEG C
With 60 DEG C, the aperture of corresponding interior circulation air-valve 23 is respectively 50% and 55%, and the aperture of regulating valve 24 of blowing is respectively 50%
With 45%.
S460：If design temperature >=75 DEG C, S480 is gone to step；Otherwise, off-load magnetic valve 12 and second throttle 11 are opened,
First throttle valve 10 is closed, into Two-way Cycle cooling off-load pattern；Followed by adjusting air-supply closed circuit and interior circulation loop
Ring Boiler pressure control leaving air temp；The aperture of interior circulation air-valve 23 is 55～65% under this pattern, and the aperture of regulating valve 24 of blowing is
45～35%；The temperature control scope of this step corresponding to the 8th section of 10 segmentation heating curves shown in Fig. 8, set leaving air temp as
70 DEG C, corresponding interior circulation air-valve 23 is respectively 60% and 40% with the aperture of air-supply regulating valve 24.
S480：Off-load magnetic valve 12 and first throttle valve 10 and second throttle 11 are opened, into Two-way Cycle two-way off-load
Pattern；Leaving air temp is controlled by adjusting the air circulation of air-supply closed circuit and interior circulation loop；Circulate in the wind under this pattern
The aperture of valve 23 is 60～80%, and the aperture of regulating valve 24 of blowing is 40～20%.The temperature control scope of this step corresponds to Fig. 8 institutes
The 9th section and the 10th section of the 10 segmentation heating curves for showing, setting leaving air temp is respectively 80 DEG C and 90 DEG C, corresponding circulate in the wind
The aperture of valve 23 is respectively 65% and 75%, and the aperture of regulating valve 24 of blowing is respectively 35% and 25%.
Embodiment 2：
The size of certain tobacco drying room is：8 × 2.8 × 2.2m, first drying tobacco leaf amount is 350 bars, per bar 30kg tobacco leaves, is closed
Meter 10500kg.Frequency conversion capability-variable heat pump hot air drying system is by one 6 invariable frequency compressor 1-1 and 6 frequency-changeable compressors
1-2 is in parallel to be constituted, and maximum heating capacity 50kW, the frequency conversion varying capacity attachment structure of unit is as shown in Figure 4.The temperature control of flue-cured tobacco process is bent
Line multisection type stoving process figure shown in Figure 9, each period heat consumption is as shown in Figure 10.Described control device 500 leads to
Cross comparative analysis and select suitable operational mode, to reach maximum operational efficiency.
The embodiment of the frequency conversion capability-variable heat pump hot air drying system control method of the invention according to Fig. 7, it is described
The step of S300 the demand heat consumption of present period is set according to default temperature control curve dynamic；In the present embodiment.Demand heat dissipation
The heat consumption of amount present period drying room unit interval is represented with the percentage of source pump maximum heating capacity；
Described step S400 selects the two-shipper transfiguration operational mode of system according to the demand heat consumption of present period, including
Following control operation action：
S420：If demand heat consumption ＜ 25%, start frequency-changeable compressor 1-2, close the first solenoid valve block 7-1 and second electric
Magnet valve group 7-2, into frequency conversion constant volume pattern；The temperature control scope of this step is corresponding to the tobacco drying shown in Fig. 9-fixed Huang phase
The first half stage, the 0～10h of baking time in Figure 10, the heat consumption of drying room is 10kw；Frequency-changeable compressor 1-2 is with 20Hz frequencies fortune
OK.
S440：If demand heat consumption ＜ 35%, start frequency-changeable compressor 1-2, close the first solenoid valve block 7-1, open the
Two solenoid valve blocks 7-2, into frequency conversion varying capacity pattern；The temperature control scope of this step is corresponding to the tobacco drying shown in Fig. 9-fixed Huang
The rear half stage of phase, the 10～60h of baking time in Figure 10, the heat consumption of drying room is 15kw；Frequency-changeable compressor 1-2 is with 30Hz frequencies
Rate is run.The first stage (fixed Huang phase) is dried in tobacco, it is desirable to which the temperature in drying room is maintained between 35～38 DEG C, now negative
Lotus is relatively small, and by the pattern demand of tobacco leaf fixed Huang phase can be preferably met.
S460：If demand heat consumption >=70%, goes to step S480；Otherwise, while starting invariable frequency compressor 1-1 and frequency conversion pressure
Contracting machine 1-2, opens the first solenoid valve block 7-1, closes the second solenoid valve block 7-2, enters and determines frequency varying capacity+frequency conversion constant volume parallel connection
Operational mode；The temperature control scope of this step corresponding to the tobacco drying-fixation stage shown in Fig. 9, the baking time 60 in Figure 10～
80h, the heat consumption of drying room is 15～35kw, and the condenser of invariable frequency compressor 1-1 and evaporator capacity are increased, and are obtained maximum and are heated
Amount；Frequency-changeable compressor 1-2 is with the operation of 30～50Hz frequencies.
S480：Start invariable frequency compressor 1-1 and frequency-changeable compressor 1-2 simultaneously, close the first solenoid valve block 7-1, open the
Two solenoid valve blocks 7-2, enter and determine frequency constant volume+frequency conversion varying capacity parallel running mode.The temperature control scope of this step corresponds to Fig. 9
Shown tobacco drying-fixation stage and the first half stage of drying muscle stage, the 80～120h of baking time in Figure 10, the heat consumption of drying room
For 35～50kw, leaving air temp will be controlled at 65～68 DEG C, and wet-bulb temperature is controlled at 40～43 DEG C；Require that blade contains through baking
The water yield is 5%～6%, vein water content 7%～8%；Frequency-changeable compressor 1-2 is with the operation of 50～100Hz frequencies, maximum load amount
Operating mode under disclosure satisfy that tobacco dry heat demand.Now, invariable frequency compressor 1-1 is as good as with common operation conditions, mainly
Play the effect of increase overall heat exchange amount.Dual system parallel running solve traditional Drying unit be unable to reach high leaving air temp and
Electrically heated drawback need to be introduced, system operation efficiency is greatly improved.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate the present invention's
Technical scheme, and be not used as limitation of the invention, any connotation based on the present invention is to embodiment described above
Change, the modification made, all will fall in the scope of the claims of the present invention.
Claims (4)
1. a kind of heat-pump-type Two-way Cycle hot air drying system control method, it is characterised in that comprise the following steps：
S100：Configuration temperature control parameter, preserves default temperature control parameter of curve；
S200：Detection and monitoring leaving air temp and drying room humiture；
S300：According to default temperature control curve dynamic adjustment design temperature；
S400：The Two-way Cycle dynamic operational of system is selected according to current design temperature；
Described heat-pump-type Two-way Cycle hot air drying system includes that the hot blast pair that air-supply closed circuit and interior circulation loop are constituted is followed
Loop back path, adjusts the air-supply regulating valve and interior circulation air-valve of hot blast double circulation loop air circulation；It is connected in series in cold-producing medium master
The latent heat condenser and sensible heat condenser of circulation line；It is made up of the connection of off-load magnetic valve, first throttle valve and second throttle
Two-way off-load branch road；
Described Two-way Cycle dynamic operational includes single cycle conventional heating pattern, Two-way Cycle step-down off-load pattern, Two-way Cycle
Cooling off-load pattern and Two-way Cycle two-way off-load pattern, wherein：
Single cycle conventional heating pattern：Off-load closed electromagnetic valve, cold-producing medium is circulated along major cycle pipeline；Circulate in the wind valve opening
0%, control valve opening 100% of blowing, described Two-way Cycle hot air drying system produces leaving air temp by closed circuit of blowing
Low temperature hot blast less than 45 DEG C；Described control device is controlled out by the run time interval or running frequency for changing compressor
Air temperature；
Two-way Cycle is depressured off-load pattern：Off-load magnetic valve and second throttle are opened, and first throttle valve is closed, and cold-producing medium is along main
While circulation line is circulated, a part of Jing off-loads magnetic valve is shunted and is directly entered vapour liquid separator by second throttle；
Circulate in the wind valve opening 50% to 55%, control valve opening 50% to 45% of blowing；Described control device is by adjusting air-supply
The air circulation control leaving air temp in closed circuit and interior circulation loop, produces the middle warm wind that leaving air temp is 45 to 65 DEG C；
Two-way Cycle cooling off-load pattern：Off-load magnetic valve and first throttle valve are opened, and second throttle is closed, and cold-producing medium is along main
While circulation line is circulated, a part of Jing off-loads magnetic valve shunting simultaneously enters steaming by the first throttle valve in parallel with expansion valve
Send out device；Circulate in the wind valve opening 55% to 65%, control valve opening 45% to 35% of blowing；Described control device is by adjusting
The air circulation control leaving air temp in air-supply closed circuit and interior circulation loop, produces the high temperature that leaving air temp is 65 to 75 DEG C
Hot blast；
Two-way Cycle two-way off-load pattern：Off-load magnetic valve and first throttle valve, second throttle are opened, and cold-producing medium is along major cycle
While pipeline is circulated, the shunting of Jing off-loads magnetic valve, the cold-producing medium part after shunting is by the first segment in parallel with expansion valve
Stream valve enters evaporimeter, and another part is directly entered vapour liquid separator by second throttle；Circulate in the wind valve opening 65% to
75%, control valve opening 35% to 25% of blowing；Described control device is by adjusting air-supply closed circuit and interior circulation loop
Air circulation control leaving air temp, produce leaving air temp higher than 75 DEG C of high-temperature hot-air.
2. heat-pump-type Two-way Cycle hot air drying system control method according to claim 1, it is characterised in that described step
Rapid S400 includes following control operation action：
S420：If demand heat consumption ＜ 25%, start frequency-changeable compressor, close the first solenoid valve block and the second solenoid valve block, enter
Enter frequency conversion constant volume pattern；
S440：If demand heat consumption ＜ 35%, start frequency-changeable compressor, close the first solenoid valve block, open the second solenoid valve block,
Into frequency conversion varying capacity pattern；
S460：If demand heat consumption >=70%, goes to step S480；Otherwise, while starting invariable frequency compressor and frequency-changeable compressor, open
The first solenoid valve block is opened, the second solenoid valve block is closed, is entered and is determined frequency varying capacity+frequency conversion constant volume parallel running mode；
S480：Start invariable frequency compressor and frequency-changeable compressor simultaneously, close the first solenoid valve block, open the second solenoid valve block, enter
Enter to determine frequency constant volume+frequency conversion varying capacity parallel running mode.
3. a kind of Heat Pump for realizing the heat-pump-type Two-way Cycle hot air drying system control method described in claim 1 or 2
Wind drying system control device, it is characterised in that include for configuring temperature control parameter and preserving default temperature control parameter of curve
Operating parameter setting module, for detecting and monitoring drying room temperature and humidity monitor module and the air-supply of leaving air temp and drying room humiture
Temperature monitoring module, for driving the valve area controller of air-valve, and for controlling the heat pump machine of compressor and magnetic valve
Group controller；The input of the drying room temperature and humidity monitor module, is connected to operating parameter setting module, dry-bulb temperature sensor
And wet bulb temperature sensor；The output end of the drying room temperature and humidity monitor module is connected to source pump controller；Source pump
The output end of controller is connected to the control magnetic valve in compressor and refrigerant line；The wind pushing temperature monitoring module it is defeated
Enter end, be connected to operating parameter setting module and leaving air temp sensor；The output end connection of the wind pushing temperature monitoring module
To valve area controller, the output end of valve area controller is connected to interior circulation air-valve and air-supply regulating valve.
4. heat pump hot air drying system control device according to claim 3, it is characterised in that described control device is adopted
Programme-control, described operation ginseng are realized with the chip microprocessor with multi-channel A/D translation interfaces and multi-channel PWM output interface
Number setting module, drying room temperature and humidity monitor module and wind pushing temperature monitoring module are the software function modules that microprocessor is provided；
The A/D translation interfaces that described dry-bulb temperature sensor, leaving air temp sensor and wet bulb temperature sensor pass through microprocessor
It is connected to chip microprocessor；Described control device is exported using the PWM of microprocessor, and for valve area controller wind is provided
Valve opening controlled output signal, and it is defeated by the VFC of source pump controller offer frequency-changeable compressor and frequency conversion fan
Go out signal；Described control device is using the PIO program to ports output solenoid valve of microprocessor and the switch output letter of compressor
Number, switch control rule is performed to the compressor in system and magnetic valve by source pump controller.
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| CN113108502A (en) * | 2021-01-29 | 2021-07-13 | 江西新晟启环保科技有限公司 | Multi-machine control system, method and device for heat pump for food |
| WO2023024636A1 (en) * | 2021-08-25 | 2023-03-02 | 青岛海尔空调电子有限公司 | Drying unit control method and drying system |
| CN113998864A (en) * | 2021-10-21 | 2022-02-01 | 杰瑞环保科技有限公司 | Drying equipment control method, drying equipment control module, drying equipment and storage medium |
| CN113998864B (en) * | 2021-10-21 | 2023-06-27 | 杰瑞环保科技有限公司 | Drying equipment control method, module, drying equipment and storage medium |
| CN115540581A (en) * | 2022-08-09 | 2022-12-30 | 青岛海尔空调器有限总公司 | Drying control method, dryer, electronic device, and storage medium |
| CN115540581B (en) * | 2022-08-09 | 2024-04-26 | 青岛海尔空调器有限总公司 | Drying control method, dryer, electronic equipment and storage medium |
| CN115469700A (en) * | 2022-09-19 | 2022-12-13 | 江苏拓米洛环境试验设备有限公司 | Temperature and humidity control method and device for test box |
| CN115469700B (en) * | 2022-09-19 | 2024-01-02 | 江苏拓米洛高端装备股份有限公司 | Temperature and humidity control method and device for test box |
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