CN212320368U - Intelligent heat source switching heat pump drying system - Google Patents
Intelligent heat source switching heat pump drying system Download PDFInfo
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- CN212320368U CN212320368U CN202021061059.9U CN202021061059U CN212320368U CN 212320368 U CN212320368 U CN 212320368U CN 202021061059 U CN202021061059 U CN 202021061059U CN 212320368 U CN212320368 U CN 212320368U
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Abstract
The utility model discloses an intelligent heat source switching heat pump drying system, which comprises a refrigerant circulation loop formed by connecting a compressor, a condensation drying module, a throttling element and an evaporation heat exchange module in series, wherein the refrigerant circulation loop is controlled by an electrical control unit, and the evaporation heat exchange module comprises an air evaporator heat exchange module and a buried pipe evaporator heat exchange module which are arranged in parallel; when the system is in operation, the electric control unit compares the external environment temperature with the circulating water temperature of the heat exchange module of the underground pipe evaporator, automatically selects the evaporator heat exchange module with high temperature, and under various external environment temperature conditions, the heat pump drying system can be operated normally and efficiently, so that the requirement of continuously drying materials is met, and the problems that the air source heat pump drying energy efficiency in winter in northern areas is low, the air source heat pump drying energy efficiency in severe cold and high humidity areas is easy to frost, and the ground source heat pump drying energy efficiency in summer is low are effectively solved.
Description
Technical Field
The utility model relates to a drying equipment technical field, concretely relates to heat pump drying system is switched to intelligence heat source.
Background
Drying refers to a process of removing the solvent in some way to retain the solid content, and generally refers to a process of introducing hot air to evaporate and take away the water in the material. The traditional drying equipment mostly adopts various modes such as airflow drying, spray drying, fluidized bed drying, rotary flash drying, infrared drying, microwave drying, freezing drying, impact drying, impinging stream drying, overheating drying, pulse combustion drying and the like. In the drying process, the problems of product quality, environmental pollution, high energy consumption and the like become bottlenecks which restrict the drying development.
The heat pump is a device for transferring heat energy of a low-level heat source to a high-level heat source, and becomes a new energy technology which is concerned at present due to the advantages of high efficiency, cleanness and environmental protection, and mainly comprises an air source heat pump, a water source heat pump and a ground source heat pump. The water source heat pump is mainly used for refrigerating and heating buildings. In the aspect of heat utilization of geothermal energy, the ground source heat pump is mainly used for living heating, bathing hot water and the like. At present, the development and utilization of heat pump drying technology have become a focus of increasing concern, but mainly focus on the air source heat pump drying field, and the problem of the air source heat pump drying mode adopting a single heat source is: in winter with low temperature, the drying efficiency of the air source heat pump is low, and the common air source heat pump drying unit is difficult to continuously and normally operate; especially in northern areas of China, high-cold and high-humidity areas are easy to frost, and in severe cases, the air source heat pump drying unit cannot normally operate and cannot meet the drying requirement. Therefore, how to fully utilize different heat sources and enable the heat pump drying unit to normally operate under different external temperature conditions is a technical problem to be urgently solved by technical personnel in the field.
Disclosure of Invention
In view of this, the technical problem to be solved by the present invention is: the utility model provides an intelligence heat source switches heat pump drying system, under the external environment temperature condition of difference, heat pump drying system can both normal operating, satisfies the material stoving demand.
In order to solve the technical problem, the technical scheme of the utility model is that: intelligence heat source switches heat pump drying system, intelligence heat source switches heat pump drying system includes: the air-conditioning system comprises a refrigerant circulation loop formed by serially connecting a compressor, a condensation drying module, a throttling element and an evaporation heat exchange module, wherein the refrigerant circulation loop is controlled by an electric control unit, and the evaporation heat exchange module comprises an air evaporator heat exchange module and a buried pipe evaporator heat exchange module which are arranged in parallel.
The air evaporator heat exchange module comprises an air evaporator, an electromagnetic valve is arranged at a refrigerant inflow end of the air evaporator, and a check valve is arranged at a refrigerant outflow end of the air evaporator.
The air evaporator heat exchange module further comprises an evaporator fan.
Wherein, buried pipe evaporator heat exchange module includes: the water circulation loop is formed by serially connecting a ground heat exchanger, a circulating water pump and a water-cooling heat exchanger, an electromagnetic valve is arranged at the refrigerant inflow end of the water-cooling heat exchanger, and a one-way valve is arranged at the refrigerant outflow end of the water-cooling heat exchanger.
The ground heat exchangers are arranged in parallel.
Wherein, the condensation drying module comprises a drying condenser.
Wherein, the condensation drying module further comprises a condensation fan.
The refrigerant circulation loop is also provided with a gas-liquid separator and a liquid storage device, the gas-liquid separator is positioned between the compressor and the evaporation heat exchange module, and the liquid storage device is positioned between the throttling element and the condensation drying module.
Wherein the electrical control unit comprises a PLC controller.
Wherein the throttling element includes, but is not limited to, an electronic expansion valve.
After the technical scheme is adopted, the beneficial effects of the utility model are as follows:
because the utility model discloses an intelligence heat source switches heat pump drying system includes: the system comprises a refrigerant circulation loop formed by connecting a compressor, a condensation drying module, a throttling element and an evaporation heat exchange module in series, wherein the refrigerant circulation loop is controlled by an electric control unit, and the evaporation heat exchange module comprises an air evaporator heat exchange module and a buried pipe evaporator heat exchange module which are arranged in parallel; when the system operates, the electric control unit compares the external environment temperature with the circulating water temperature of the heat exchange module of the underground pipe evaporator, and automatically selects the heat exchange module of the evaporator with high temperature; when the ambient temperature is lower than the temperature of circulating water, for example, in cold seasons in winter, the heat exchange module of the buried pipe evaporator is automatically switched to, a refrigerant circulation loop is formed by connecting a compressor, a condensation drying module, a throttling element and the heat exchange module of the buried pipe evaporator in series, a heat pump takes ground source heat energy as a heat source, and materials are dried by heat release of the condensation drying module; when the ambient temperature is higher than the temperature of circulating water, such as spring, summer and autumn, the air-cooled heat pump is automatically switched to the air evaporator heat exchange module, a compressor, a condensation drying module, a throttling element and the air evaporator heat exchange module are connected in series to form a refrigerant circulation loop, the heat pump takes air as a heat source, and the condensation drying module releases heat to dry materials; the intelligent heat source switching heat pump drying system fully utilizes different heat sources, and the heat pump drying system can efficiently and normally operate under various external environment temperature conditions, thereby meeting the requirement of continuously drying materials; the problems that the air source heat pump drying efficiency is low in winter in northern areas, frosting is easy to occur in high-cold high-humidity areas, and the ground source heat pump drying efficiency is low in summer are effectively solved.
Drawings
Fig. 1 is a schematic view of an intelligent heat source switching heat pump drying system according to an embodiment of the present invention;
in the figure: 1, a first electromagnetic valve; 2, a second electromagnetic valve; 3-evaporator fan; 4-an air evaporator; 5-water cooling heat exchanger; 6-one-way valve I; 7-a one-way valve II; 8-a gas-liquid separator; 9-a compressor; 10-a throttling element; 11-a circulating water pump; 12-a ground heat exchanger; 13-a reservoir; 14-drying the condenser; 15-a condensing fan; a-an air evaporator heat exchange module; b-buried pipe evaporator heat exchange module; c-a condensing and drying module.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
As shown in fig. 1, the utility model discloses intelligence heat source switches heat pump drying system includes: the air conditioner comprises a refrigerant circulation loop formed by serially connecting a compressor 9, a condensation drying module C, a throttling element 10 and an evaporation heat exchange module, wherein the refrigerant circulation loop is controlled by an electric control unit (not specifically shown in the figure), and the evaporation heat exchange module comprises an air evaporator heat exchange module A and an underground pipe evaporator heat exchange module B which are arranged in parallel.
The air evaporator heat exchange module A comprises an air evaporator 4, a first electromagnetic valve 1 is arranged at a refrigerant inflow end of the air evaporator 4, a first check valve 6 is arranged at a refrigerant outflow end of the air evaporator 4, and a finned evaporator is preferably adopted as the air evaporator 4. In order to accelerate the evaporation speed of the refrigerant, the air evaporator heat exchange module A is further provided with an evaporator fan 3.
The heat exchange module B of the buried pipe evaporator comprises a water circulation loop formed by serially connecting a buried pipe heat exchanger 12, a circulating water pump 11 and a water-cooling heat exchanger 5, a second electromagnetic valve 2 is arranged at the refrigerant inflow end of the water-cooling heat exchanger 5, and a second check valve 7 is arranged at the refrigerant outflow end of the water-cooling heat exchanger 5. In order to increase the utilization of ground source heat energy, a plurality of ground heat exchangers 12 are arranged in parallel.
Wherein, the condensing and drying module C comprises a drying condenser 14. In order to accelerate heat release and improve the uniform drying effect, the condensation drying module C is further provided with a condensation fan 15.
The refrigerant circulation circuit is also provided with auxiliary components such as a gas-liquid separator 8 and a reservoir 13. The gas-liquid separator 8 is positioned between the air inlet of the compressor 9 and the evaporation heat exchange module, so that the compressor is prevented from being damaged due to liquid impact caused by the liquid refrigerant sucked into the air inlet of the compressor, and the oil is prevented from being diluted due to the fact that redundant refrigerant flows to a crankcase of the compressor. The liquid accumulator 13 is located between the throttling element 10 and the condensing and drying module C, and the liquid accumulator stores the refrigerant and provides the refrigerant to the evaporator, and the refrigerant is supplied continuously, so that the refrigerant which is not completely cooled is cooled again, and completely reaches a liquid state.
The throttling element 10 includes, but is not limited to, an electronic expansion valve.
The electrical control unit mainly comprises a PLC (programmable logic controller), a temperature detection element and the like, wherein the temperature detection element is communicated with the PLC, and the PLC is preferably Siemens SMART 200. The real-time monitoring of the temperature of the heat source and the automatic selection and switching of the heat source are realized by an electric control unit, and the functions of the electric control unit can be easily realized by those skilled in the art according to the existing circuit control principle, and are not described in detail herein.
The utility model discloses intelligence heat source switches heat pump drying system's operation as follows:
when the air temperature is higher than the circulating water temperature of the heat exchange module B of the buried pipe evaporator, mainly in spring, summer and autumn, the system is automatically switched to the heat exchange module A of the air evaporator, the first electromagnetic valve 1 and the first one-way valve 6 are opened, the second electromagnetic valve 2 and the second one-way valve 7 are closed, high-temperature and high-pressure refrigerant gas discharged by the compressor 9 enters the condensation drying module C through a pipeline, the high-temperature and high-pressure refrigerant gas is condensed in the condensation drying module C to release heat, and the discharged heat is used for drying and drying materials; condensed refrigerant liquid enters the throttling element 10 through the liquid storage device 13 to realize throttling and pressure reduction, the throttled refrigerant enters the air evaporator 4 of the air evaporator heat exchange module A through the electromagnetic valve I1 to absorb heat in air to be evaporated and vaporized, and low-temperature and low-pressure refrigerant gas after evaporation and vaporization enters the compressor 9 through the one-way valve I6 and the gas-liquid separator 8 to be compressed. The process is repeated in a circulating mode in sequence, and the materials are dried by the heat pump.
When the circulating water temperature of the heat exchange module B of the buried pipe evaporator is higher than the air temperature, mainly in cold seasons in winter, and in a low-temperature air environment of-10 ℃ to-15 ℃, the heating capacity of a common air source heat pump drying unit is seriously attenuated, so that the common air source heat pump drying unit is not suitable for the temperature range; when the air source heat pump drying unit is in an ultralow temperature environment of-15 to-20 ℃, the common air source heat pump drying unit cannot normally operate; the temperature of circulating water of a buried pipe in the ground source system is kept at about 10 ℃, and the circulating water is relatively stable throughout the year; under the condition, the first electromagnetic valve 1 and the first one-way valve 6 are closed, the second electromagnetic valve 2 and the second one-way valve 7 are opened, the heat exchange module B of the underground pipe evaporator is automatically switched to, high-temperature and high-pressure refrigerant gas discharged by the compressor 9 enters the condensation drying module C through a pipeline, the high-temperature and high-pressure refrigerant gas is condensed in the condensation drying module C to release heat, and the discharged heat is utilized to dry and dry materials; condensed refrigerant liquid enters the throttling element 10 through the liquid storage device 13 to realize throttling depressurization, the throttled refrigerant enters the water-cooled heat exchanger 5 of the buried pipe evaporator heat exchange module B through the electromagnetic valve II 2 to absorb heat of water in a buried pipe water system to be evaporated and vaporized, and low-temperature and low-pressure refrigerant gas after evaporation and vaporization enters the compressor 9 through the one-way valve II 7 and the gas-liquid separator 8 to be compressed. The process is repeated in a circulating mode in sequence, and the materials are dried by the heat pump.
The utility model discloses an intelligence heat source switches heat pump drying system, relatively external environment temperature and the circulating water temperature of buried pipe evaporator heat exchange module, the high evaporimeter heat exchange module of automatic selection temperature, under various external environment temperature conditions, heat pump drying system can both high-efficient normal operating, the demand of lasting drying material has been satisfied, it is low effectively to have solved northern area air source heat pump stoving efficiency in winter, the high and cold high humid area easily frosts, the difficult problem that the efficiency is low is dried to the ground source heat pump in summer.
The foregoing is an example of the preferred embodiment of the present invention, and those parts not specifically mentioned are known in the art, and the scope of the present invention is defined by the appended claims, and all equivalent changes that can be made based on the teachings of the present invention are within the scope of the present invention.
Claims (10)
1. Intelligence heat source switches heat pump drying system, intelligence heat source switches heat pump drying system includes: the heat exchange system comprises a refrigerant circulation loop formed by serially connecting a compressor, a condensation drying module, a throttling element and an evaporation heat exchange module, and is characterized in that the evaporation heat exchange module comprises an air evaporator heat exchange module and an underground pipe evaporator heat exchange module which are arranged in parallel.
2. The intelligent heat source switching heat pump drying system of claim 1, wherein the air evaporator heat exchange module comprises an air evaporator, a solenoid valve is disposed at a refrigerant inflow end of the air evaporator, and a check valve is disposed at a refrigerant outflow end of the air evaporator.
3. The intelligent heat-source-switching heat pump drying system of claim 2, wherein the air evaporator heat exchange module further comprises an evaporator fan.
4. The intelligent heat source switching heat pump drying system of claim 1, wherein the buried tube evaporator heat exchange module comprises: the water circulation loop is formed by serially connecting a ground heat exchanger, a circulating water pump and a water-cooling heat exchanger, an electromagnetic valve is arranged at the refrigerant inflow end of the water-cooling heat exchanger, and a one-way valve is arranged at the refrigerant outflow end of the water-cooling heat exchanger.
5. The intelligent heat-source-switching heat pump drying system of claim 4, wherein a plurality of the ground heat exchangers are arranged in parallel.
6. The intelligent heat-source-switched heat pump drying system of claim 1, wherein the condensing drying module comprises a drying condenser.
7. The intelligent heat-source-switching heat pump drying system of claim 6, wherein the condensing drying module further comprises a condensing fan.
8. The intelligent heat source switching heat pump drying system of claim 1, wherein a gas-liquid separator and a reservoir are further disposed in the refrigerant circulation loop, the gas-liquid separator is located between the compressor and the evaporation heat exchange module, and the reservoir is located between the throttling element and the condensation drying module.
9. The intelligent heat-source-switching heat pump drying system of claim 1, wherein the electrical control unit comprises a PLC controller.
10. The intelligent heat-source-switching heat pump drying system of claim 1, wherein the throttling element comprises, but is not limited to, an electronic expansion valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021061059.9U CN212320368U (en) | 2020-06-09 | 2020-06-09 | Intelligent heat source switching heat pump drying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021061059.9U CN212320368U (en) | 2020-06-09 | 2020-06-09 | Intelligent heat source switching heat pump drying system |
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| CN202021061059.9U Active CN212320368U (en) | 2020-06-09 | 2020-06-09 | Intelligent heat source switching heat pump drying system |
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