CN110243105B - Constant temperature heating type air source heat pump drying unit - Google Patents
Constant temperature heating type air source heat pump drying unit Download PDFInfo
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- CN110243105B CN110243105B CN201910510651.8A CN201910510651A CN110243105B CN 110243105 B CN110243105 B CN 110243105B CN 201910510651 A CN201910510651 A CN 201910510651A CN 110243105 B CN110243105 B CN 110243105B
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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
- 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
- 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
- F26B21/003—Supply-air or gas filters
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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 discloses a constant-temperature heating type air source heat pump drying unit, and relates to the technical field of dryers. The air energy heat pump unit is provided with a refrigerant air inlet, an air inlet pipe is communicated with the refrigerant air inlet, an air heating sleeve is arranged on the air inlet pipe, an air filtering device is connected to the port of the air inlet pipe, and a refrigerant air outlet pipe is arranged on the air energy heat pump unit; the air energy heat pump unit is provided with a heat medium air outlet and a heat medium air inlet; the dryer is provided with a hot air inlet and a waste gas outlet; a first pipeline is communicated between the hot air inlet and the heat medium air outlet, and a second pipeline is communicated between the waste gas outlet and the heat medium air inlet. The invention realizes the regulation and control of the gas temperature of each part in the air source heat pump drying unit by the temperature detection device, the gas flow rate detection device, the electromagnetic valve and the air heating sleeve, thereby realizing the constant temperature drying of the products of the dryer.
Description
Technical Field
The invention belongs to the technical field of dryers, and particularly relates to a constant-temperature heating type air source heat pump dryer unit.
Background
The drying is carried out in many fields, such as the drying of agricultural and sideline products, medicinal materials, tobacco, wood and electroplated parts, and the traditional drying mode at present has large energy consumption and pollution. Even if the drying mode of the air source heat pump is adopted, the temperature of hot air provided by the dryer is high (about 80 ℃), the pressure ratio is usually larger when the natural environment heat source is used for heating, and the temperature fluctuation of the hot air for supplying the dryer is easily larger due to the temperature change of the natural environment heat source caused by the temperature change of day and night temperature difference, so that the drying speed and the drying effect are influenced.
Disclosure of Invention
The invention aims to provide a constant-temperature heating type air source heat pump drying unit, which realizes regulation and control of the air temperature of each part in the air source heat pump drying unit through a temperature detection device, an air flow velocity detection device, an electromagnetic valve and an air heating sleeve, thereby realizing constant-temperature drying of products of a dryer.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a constant-temperature heating type air source heat pump drying unit which comprises an air energy heat pump unit and a dryer, wherein a refrigerant air inlet is formed in the air energy heat pump unit, an air inlet pipe is communicated with the refrigerant air inlet, an air heating sleeve is arranged on the air inlet pipe, an air filtering device is connected to the port of the air inlet pipe, and a refrigerant air outlet pipe is formed in the air energy heat pump unit;
the air energy heat pump unit is provided with a heat medium air outlet and a heat medium air inlet;
the dryer is provided with a hot air inlet and a waste gas outlet;
a first pipeline is communicated between the hot air inlet and the heat medium air outlet, and a second pipeline is communicated between the waste gas outlet and the heat medium air inlet;
the air inlet of the air inlet pipe is provided with a first temperature detection device, and the air inlet of a refrigerant of the air energy heat pump unit is provided with a second temperature detection device; a first gas flow velocity detection device is arranged in the air inlet pipe;
a third temperature detection device is arranged at a heat medium air outlet of the air energy heat pump unit, a fourth temperature detection device is arranged at a heat medium air inlet, and a second gas flow velocity detection device is arranged at a heat medium air outlet or a heat medium air inlet of the air energy heat pump unit;
the first temperature detection device, the second temperature detection device, the fourth temperature detection device, the first gas flow velocity detection device, the second gas flow velocity detection device and the third temperature detection device are all electrically connected with a processor;
a first flow adjusting device for adjusting the flow rate of hot air is arranged on the first pipeline, and a second flow adjusting device for adjusting the air inlet flow rate of a refrigerant is arranged on the air inlet pipe;
and the signal output end of the processor is respectively connected with the second flow regulating device and the first flow regulating device.
Furthermore, a cooling device is further arranged on the air inlet pipe and connected with the processor.
Furthermore, a heating air pipe is communicated between the first pipeline and the air heating sleeve, and a first electromagnetic valve is arranged on the heating air pipe; an exhaust pipe is communicated between the air heating sleeve and the second pipeline, a second electromagnetic valve is arranged on the exhaust pipe, an air supply pipe is communicated between the second pipeline and the heating air pipe, and a third electromagnetic valve is arranged on the air supply pipe;
the connection part of the exhaust pipe and the second pipeline is positioned between the heat medium air inlet and the connection part of the air supply pipe and the second pipeline;
and the third electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve uniform processor are connected.
Furthermore, a dust remover is arranged on the second pipeline.
Further, the first temperature detection device, the second temperature detection device, the fourth temperature detection device and the third temperature detection device are all temperature sensors.
Further, the air heating sleeve comprises a heating sleeve sleeved on the air inlet pipe, and an inlet and an outlet are formed in the heating sleeve.
Furthermore, the cooling device comprises a cooling sleeve sleeved on the air inlet pipe, a water outlet and a water inlet are formed in the cooling sleeve, a water pump is connected to the water inlet, a flowmeter is connected to the water outlet of the water pump, and the flowmeter and the water pump are both connected with the processor.
A constant temperature control method of a constant temperature heating type air source heat pump drying unit comprises the following steps:
step 1, setting the air inlet temperature T1 +/-N ℃ of a refrigerant and the air outlet temperature T2 +/-M ℃ of a heating medium;
and 4, opening the first electromagnetic valve and the second electromagnetic valve, heating the air on the air inlet pipe by using the air heating sleeve, detecting the air inlet temperature T5 of the dryer by using the fourth temperature detection device when the air inlet temperature T4 detected by the second temperature detection device meets the set temperature T1 +/-N ℃, and enabling the T5 to meet the set temperature T2 +/-M ℃ by adjusting the air inlet speed of the refrigerant.
The invention has the following beneficial effects:
1. according to the invention, the temperature detection device, the gas flow velocity detection device, the electromagnetic valve and the air heating sleeve are used for regulating and controlling the gas temperature of each part in the air source heat pump drying unit, so that the product of the dryer is dried at constant temperature, and the drying efficiency and effect are improved.
2. The air energy heat pump unit utilizes the heat source gas in the system to heat the refrigerant gas of the air energy heat pump unit, fully utilizes the energy in the system, and has the advantages of energy conservation, environmental protection and energy utilization rate improvement.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a constant-temperature heating type air source heat pump drying unit of the invention;
fig. 2 is a control structure diagram of the constant temperature heating system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Example 1
Referring to fig. 1-2, the present invention is a constant temperature heating type air source heat pump drying unit, including an air energy heat pump unit 1 and a dryer 2, the air energy heat pump unit 1 is provided with a refrigerant air inlet and is communicated with an air inlet pipe 11, the air inlet pipe 11 is provided with an air heating jacket 3, the port of the air inlet pipe 11 is further connected with an air filtering device 5, and the refrigerant air outlet pipe 14 of the air energy heat pump unit 1;
the air energy heat pump unit 1 is provided with a heat medium air outlet and a heat medium air inlet 12;
the dryer 2 is provided with a hot air inlet and a waste gas outlet;
a first pipeline 13 is communicated between the hot air inlet and the heat medium air outlet, and a second pipeline 21 is communicated between the waste gas outlet and the heat medium air inlet 12;
a first temperature detection device is arranged at an air inlet of the air inlet pipe 11, and a second temperature detection device is arranged at an air inlet of a refrigerant of the air energy heat pump unit 1; a first gas flow velocity detection device is arranged in the air inlet pipe 11;
a third temperature detection device is arranged at a heating medium air outlet of the air energy heat pump unit 1, a fourth temperature detection device is arranged at a heating medium air inlet 12, and a second gas flow velocity detection device is arranged at a heating medium air outlet or heating medium air inlet 12 of the air energy heat pump unit 1;
the first temperature detection device, the second temperature detection device, the fourth temperature detection device, the first gas flow velocity detection device, the second gas flow velocity detection device and the third temperature detection device are all electrically connected with a processor;
a first flow adjusting device for adjusting the flow rate of hot air is arranged on the first pipeline 13, and a second flow adjusting device for adjusting the flow rate of inlet air of a refrigerant is arranged on the air inlet pipe 11;
and the signal output end of the processor is respectively connected with the second flow regulating device and the first flow regulating device.
Preferably, a cooling device 4 is further provided on the air inlet pipe 11, and the cooling device 4 is connected with the processor.
Preferably, a heating air pipe 31 is communicated between the first pipeline 13 and the air heating jacket 3, and a first electromagnetic valve 32 is arranged on the heating air pipe 31; an exhaust pipe 35 is communicated between the air heating jacket 3 and the second pipeline 21, a second electromagnetic valve 36 is arranged on the exhaust pipe 35, an air supply pipe 33 is communicated between the second pipeline 21 and the heating air pipe 31, and a third electromagnetic valve 34 is arranged on the air supply pipe 33;
wherein, the connection position of the exhaust pipe 35 and the second pipeline 21 is positioned between the heat medium air inlet 12 and the connection position of the air supply pipe 33 and the second pipeline 21;
the third solenoid valve 34, the first solenoid valve 32 and the second solenoid valve 36 are connected to the processor.
Preferably, a dust collector 22 is provided on the second duct 21.
Preferably, the first temperature detection device, the second temperature detection device, the fourth temperature detection device and the third temperature detection device are all temperature sensors.
Preferably, the cooling device 4 comprises a cooling jacket sleeved on the air inlet pipe 11, the cooling jacket is provided with a water outlet and a water inlet, the water inlet is connected with a water pump, the water outlet of the water pump is connected with a flowmeter, and the flowmeter and the water pump are both connected with the processor.
A constant temperature control method of a constant temperature heating type air source heat pump drying unit comprises the following steps:
step 1, setting the air inlet temperature T1 +/-N ℃ of a refrigerant and the air outlet temperature T2 +/-M ℃ of a heating medium;
and 4, opening the first electromagnetic valve 32 and the second electromagnetic valve 36, heating the air on the air inlet pipe 11 by using the air heating sleeve 3, detecting the air inlet temperature T5 of the dryer 2 by using the fourth temperature detection device when the air inlet temperature T4 detected by the second temperature detection device meets the set temperature T1 +/-N ℃, and enabling the T5 to meet the set temperature T2 +/-M ℃ by adjusting the flow rate of the hot source gas in the drying system.
Example 2
Referring to fig. 1-2, the present invention is a constant temperature heating type air source heat pump drying unit, including an air energy heat pump unit 1 and a dryer 2, the air energy heat pump unit 1 is provided with a refrigerant air inlet and is communicated with an air inlet pipe 11, the air inlet pipe 11 is provided with an air heating jacket 3, the port of the air inlet pipe 11 is further connected with an air filtering device 5, and the refrigerant air outlet pipe 14 of the air energy heat pump unit 1;
the air energy heat pump unit 1 is provided with a heat medium air outlet and a heat medium air inlet 12;
the dryer 2 is provided with a hot air inlet and a waste gas outlet;
a first pipeline 13 is communicated between the hot air inlet and the heat medium air outlet, and a second pipeline 21 is communicated between the waste gas outlet and the heat medium air inlet 12;
a first temperature detection device is arranged at an air inlet of the air inlet pipe 11, and a second temperature detection device is arranged at an air inlet of a refrigerant of the air energy heat pump unit 1; a first gas flow velocity detection device is arranged in the air inlet pipe 11;
a third temperature detection device is arranged at a heating medium air outlet of the air energy heat pump unit 1, a fourth temperature detection device is arranged at a heating medium air inlet 12, and a second gas flow velocity detection device is arranged at a heating medium air outlet or heating medium air inlet 12 of the air energy heat pump unit 1;
the first temperature detection device, the second temperature detection device, the fourth temperature detection device, the first gas flow velocity detection device, the second gas flow velocity detection device and the third temperature detection device are all electrically connected with a processor;
a first flow adjusting device for adjusting the flow rate of hot air is arranged on the first pipeline 13, and a second flow adjusting device for adjusting the flow rate of inlet air of a refrigerant is arranged on the air inlet pipe 11;
and the signal output end of the processor is respectively connected with the second flow regulating device and the first flow regulating device.
Preferably, a cooling device 4 is further provided on the air inlet pipe 11, and the cooling device 4 is connected with the processor.
Preferably, a heating air pipe 31 is communicated between the first pipeline 13 and the air heating jacket 3, and a first electromagnetic valve 32 is arranged on the heating air pipe 31; an exhaust pipe 35 is communicated between the air heating jacket 3 and the second pipeline 21, a second electromagnetic valve 36 is arranged on the exhaust pipe 35, an air supply pipe 33 is communicated between the second pipeline 21 and the heating air pipe 31, and a third electromagnetic valve 34 is arranged on the air supply pipe 33;
wherein, the connection position of the exhaust pipe 35 and the second pipeline 21 is positioned between the heat medium air inlet 12 and the connection position of the air supply pipe 33 and the second pipeline 21;
the third solenoid valve 34, the first solenoid valve 32 and the second solenoid valve 36 are connected to the processor.
Preferably, a dust collector 22 is provided on the second duct 21.
Preferably, the first temperature detection device, the second temperature detection device, the fourth temperature detection device and the third temperature detection device are all temperature sensors.
Preferably, the cooling device 4 comprises a cooling jacket sleeved on the air inlet pipe 11, the cooling jacket is provided with a water outlet and a water inlet, the water inlet is connected with a water pump, the water outlet of the water pump is connected with a flowmeter, and the flowmeter and the water pump are both connected with the processor.
A constant temperature control method of a constant temperature heating type air source heat pump drying unit comprises the following steps:
step 1, setting the air inlet temperature T1 +/-N ℃ of a refrigerant and the air outlet temperature T2 +/-M ℃ of a heating medium;
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (1)
1. Constant temperature heating type air source heat pump drying unit, including air energy heat pump set (1) and drying-machine (2), its characterized in that: the air energy heat pump unit (1) is provided with a refrigerant air inlet, an air inlet pipe (11) is communicated with the refrigerant air inlet, an air heating sleeve (3) is arranged on the air inlet pipe (11), an air filtering device (5) is connected to the port of the air inlet pipe (11), and a refrigerant air outlet pipe (14) is arranged on the air energy heat pump unit (1);
the air energy heat pump unit (1) is provided with a heat medium air outlet and a heat medium air inlet (12);
the dryer (2) is provided with a hot air inlet and a waste gas outlet;
a first pipeline (13) is communicated between the hot air inlet and the heat medium air outlet, and a second pipeline (21) is communicated between the waste gas outlet and the heat medium air inlet (12);
a first temperature detection device is arranged at an air inlet of the air inlet pipe (11), and a second temperature detection device is arranged at a refrigerant air inlet of the air energy heat pump unit (1); a first gas flow velocity detection device is arranged in the air inlet pipe (11);
a third temperature detection device is arranged at a heat medium air outlet of the air energy heat pump unit (1), a fourth temperature detection device is arranged at a heat medium air inlet (12), and a second gas flow rate detection device is arranged at a heat medium air outlet or heat medium air inlet (12) of the air energy heat pump unit (1);
the first temperature detection device, the second temperature detection device, the fourth temperature detection device, the first gas flow velocity detection device, the second gas flow velocity detection device and the third temperature detection device are all electrically connected with a processor;
a first flow adjusting device for adjusting the flow rate of hot air is arranged on the first pipeline (13), and a second flow adjusting device for adjusting the flow rate of inlet refrigerant is arranged on the air inlet pipe (11);
the signal output end of the processor is respectively connected with the second flow regulating device and the first flow regulating device;
the air inlet pipe (11) is also provided with a cooling device (4), and the cooling device (4) is connected with the processor;
a heating air pipe (31) is communicated between the first pipeline (13) and the air heating sleeve (3), and a first electromagnetic valve (32) is arranged on the heating air pipe (31); an exhaust pipe (35) is communicated between the air heating jacket (3) and the second pipeline (21), a second electromagnetic valve (36) is arranged on the exhaust pipe (35), an air supply pipe (33) is communicated between the second pipeline (21) and the heating air pipe (31), and a third electromagnetic valve (34) is arranged on the air supply pipe (33);
wherein the connection position of the exhaust pipe (35) and the second pipeline (21) is positioned between the connection position of the heat medium air inlet (12) and the second pipeline (21) and the connection position of the air supply pipe (33);
the third electromagnetic valve (34), the first electromagnetic valve (32) and the second electromagnetic valve (36) are connected with the uniform processor; a dust remover (22) is arranged on the second pipeline (21);
the constant temperature control method of the constant temperature heating type air source heat pump drying unit comprises the following steps:
step 1, setting the air inlet temperature T1 +/-N ℃ of a refrigerant and the air outlet temperature T2 +/-M ℃ of a heating medium;
step 2, starting the air energy heat pump unit, detecting the inlet air temperature to be T3 through the first temperature detection device, detecting the inlet air temperature to be T4 through the second temperature detection device, and judging whether the T3 is within T1 +/-N ℃; if T3 is greater than T1+ N, go to step 3; if T3 is less than T1-N, go to step 4;
step 3, starting a cooling device, and controlling the water outlet speed of the water pump through a processor to adjust the air inlet temperature to meet the set temperature T1 +/-N ℃;
and 4, opening the first electromagnetic valve and the second electromagnetic valve, heating the air on the air inlet pipe by using the air heating sleeve, detecting the air inlet temperature T5 of the dryer by using the fourth temperature detection device when the air inlet temperature T4 detected by the second temperature detection device meets the set temperature T1 +/-N ℃, and enabling the T5 to meet the set temperature T2 +/-M ℃ by adjusting the air inlet speed of the refrigerant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910510651.8A CN110243105B (en) | 2019-06-13 | 2019-06-13 | Constant temperature heating type air source heat pump drying unit |
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| CN201910510651.8A CN110243105B (en) | 2019-06-13 | 2019-06-13 | Constant temperature heating type air source heat pump drying unit |
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| CN110243105A CN110243105A (en) | 2019-09-17 |
| CN110243105B true CN110243105B (en) | 2020-12-11 |
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| CN112191471A (en) * | 2020-10-20 | 2021-01-08 | 江苏凯伦建材股份有限公司 | Roller coating method capable of increasing roller coating covering thickness |
| CN112857022A (en) * | 2021-03-29 | 2021-05-28 | 河北博志热能设备有限公司 | Heating assembly device for improving air outlet temperature of heat pump drying unit and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204963517U (en) * | 2015-09-10 | 2016-01-13 | 丁德华 | Air source constant temperature and humidity vermicelli stoving heat recovery unit |
| CN105258474A (en) * | 2015-11-11 | 2016-01-20 | 汉新（福建）能源投资发展有限公司 | Energy-saving and emission-reducing air energy stone dryer and drying line and drying process thereof |
| CN205536673U (en) * | 2016-01-29 | 2016-08-31 | 广州市同益新能源科技有限公司 | Dry heat pump system of constant temperature |
| CN206146161U (en) * | 2016-08-31 | 2017-05-03 | 南京韩威南冷制冷集团有限公司 | Heat pump constant humidity stoving case is adjusted to new trend |
| CN206469594U (en) * | 2016-12-20 | 2017-09-05 | 珠海格力电器股份有限公司 | A kind of heat pump dryer |
| CN107560232A (en) * | 2017-09-01 | 2018-01-09 | 珠海格力电器股份有限公司 | Analysis of Heat Pump Drying System and its control method |
| CN207831892U (en) * | 2018-01-05 | 2018-09-07 | 贝莱特空调有限公司 | A kind of efficient physical Multi-functional dehumidifying heat pump drying unit |
| CN207831891U (en) * | 2018-01-05 | 2018-09-07 | 贝莱特空调有限公司 | A kind of efficient physical dehumidifying heat pump drying unit |
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