CN209978521U - Controller of solar heat pump drying system - Google Patents
Controller of solar heat pump drying system Download PDFInfo
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- CN209978521U CN209978521U CN201920610949.1U CN201920610949U CN209978521U CN 209978521 U CN209978521 U CN 209978521U CN 201920610949 U CN201920610949 U CN 201920610949U CN 209978521 U CN209978521 U CN 209978521U
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Abstract
The utility model relates to the technical field of control, in particular to a controller of a solar heat pump drying system, which comprises a sensor module, an analog input module, a control module, an analog output module, a frequency converter control module and a relay module; the utility model discloses an adopt analog input module, control module, analog output module's cooperation, general sensor of being can directly be connected with analog input module, and compatibility is good, gathers solar heat pump drying system's relevant parameter through sensor module, adjusts the operating condition of corresponding equipment for the temperature of drying chamber is stable, and rational utilization solar energy and air energy, makes solar collector and air energy heat pump can coordinate more, reasonable work.
Description
Technical Field
The utility model relates to a control technical field, concretely relates to solar thermal energy pump drying system's controller.
Background
The drying system usually uses coal, electricity, natural gas and other fuels, and the drying is a huge energy consumption process. The industrial drying system utilizing renewable energy sources such as solar energy, air energy and the like is researched and developed, so that the energy is saved, the emission is reduced, and the system is economical and practical. The solar heat pump drying system combining the solar heat collector and the air heat pump can fully utilize solar energy, achieve the best energy-saving effect and easily meet the requirement of the stability of the drying process. However, at present, no controller is available, so that the solar heat pump drying system can work stably, output at a constant temperature and has good compatibility.
Disclosure of Invention
In order to solve the problem, the utility model provides a solar thermal energy pump drying system's controller, concrete technical scheme is as follows:
a controller of a solar heat pump drying system comprises a solar heat collector, a solar circulating pump, a hot water supply pump, a heat storage water tank, an air energy heat pump system, a dryer and an air blower, wherein the air energy heat pump system comprises a condenser, a variable frequency compressor, an evaporator and an expansion valve; the solar heat collector is connected with the heat pump in parallel, hot water in the heat storage water tank can be heated at the same time, when the hot water in the heat storage water tank is pumped by the hot water pump and flows through the radiating fins in the dryer, heat is blown into the drying chamber through the blower, and materials are dried through hot air; the controller comprises a sensor module, an analog input module, a control module, an analog output module, a frequency converter control module and a relay module; the sensor module is used for detecting the temperature and the water level of the heat storage water tank, the water outlet temperature of the solar heat collector, the wind speed of the blower, the external temperature and the temperature of the drying chamber; the analog quantity input module is used for inputting the detection signal of the sensor module to the control module; the control module is used for controlling and collecting signals of the analog quantity input module, processing the signals and controlling the working states of the frequency converter control module and the relay module according to the processing result; the analog quantity output module is used for outputting a control signal of the control module; the frequency converter control module is used for controlling the working frequency of the blower and the compressor; the relay module is used for controlling starting and stopping of the air blower, the hot water supply pump, the solar circulating pump and the compressor; the sensor module, the analog input module, the control module and the analog output module are sequentially connected; and the analog quantity output module is respectively connected with the frequency converter control module and the relay module.
Preferably, the sensor module comprises a temperature sensor, a water level sensor and a wind speed sensor.
Preferably, the temperature sensor comprises a temperature sensor arranged in the heat storage water tank, a temperature sensor arranged at a water outlet of the solar heat collector, a temperature sensor arranged on the solar heat collector, and a temperature sensor arranged in the drying chamber.
Preferably, the water level sensor comprises a plurality of steel needles, the steel needles are respectively arranged on the side wall in the heat storage water tank and fixed at different heights along the vertical direction, and each steel needle is connected with a resistor in series and is respectively connected with the power supply; each steel needle is respectively connected with the analog input module.
Preferably, the temperature sensor arranged in the heat storage water tank comprises a thermistor and an operational amplifier; the thermistor is connected with the operational amplifier, and the operational amplifier is connected with the controller.
Preferably, the temperature sensor arranged at the water outlet of the solar heat collector, the temperature sensor arranged on the solar heat collector and the temperature sensor arranged in the drying chamber adopt EE10-FT6 temperature and humidity integrated transmitters.
The utility model has the advantages that: the utility model discloses an adopt analog input module, control module, analog output module's cooperation, general sensor of being can directly be connected with analog input module, and compatibility is good, gathers solar heat pump drying system's relevant parameter through sensor module, adjusts the operating condition of corresponding equipment for the temperature of drying chamber is stable, and rational utilization solar energy and air energy, makes solar collector and air energy heat pump can coordinate more, reasonable work.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the water level sensor of the present invention;
fig. 3 is the utility model discloses a set up the temperature sensor's in heat storage water tank structural schematic diagram.
Detailed Description
For a better understanding of the present invention, the following further description is made in conjunction with the accompanying drawings and the specific embodiments:
as shown in fig. 1, a controller of a solar heat pump drying system, the solar heat pump drying system includes a solar heat collector, a solar circulating pump, a hot water supply pump, a hot water storage tank, an air energy heat pump system, a dryer, and a blower, the air energy heat pump system includes a condenser, a variable frequency compressor, an evaporator, and an expansion valve; the solar heat collector is connected with the heat pump in parallel, hot water in the heat storage water tank can be heated at the same time, when the hot water in the heat storage water tank is pumped by the hot water pump and flows through the radiating fins in the dryer, heat is blown into the drying chamber through the blower, and materials are dried through hot air; the controller comprises a sensor module, an analog input module, a control module, an analog output module, a frequency converter control module and a relay module; the sensor module is used for detecting the temperature and the water level of the heat storage water tank, the water outlet temperature of the solar heat collector, the wind speed of the blower, the external temperature and the temperature of the drying chamber; the analog quantity input module is used for inputting the detection signal of the sensor module to the control module; the control module is used for controlling and collecting signals of the analog input module, processing the signals and controlling the working states of the frequency converter control module and the relay module according to the processing result; the analog quantity output module is used for outputting a control signal of the control module; the frequency converter control module is used for controlling the working frequency of the air blower and the air energy heat pump; the relay module is used for controlling the start and stop of the blower, the hot water supply pump, the solar circulating pump and the compressor; the sensor module, the analog input module, the control module and the analog output module are sequentially connected; and the analog quantity output module is respectively connected with the frequency converter control module and the relay module.
The controller of the solar heat pump drying system further comprises a display module, the display module is connected with the control module, and the display module adopts an LCD display screen. The control module adopts ohm dragon CP1H-XA series PLC. An analog input module and an analog output module are arranged in the ohm dragon CP1H-XA series PLC.
The sensor module comprises a temperature sensor, a water level sensor and a wind speed sensor. The temperature sensor comprises a temperature sensor arranged in the heat storage water tank, a temperature sensor arranged at the water outlet of the solar heat collector, a temperature sensor arranged on the solar heat collector and a temperature sensor arranged in the drying chamber.
The water level sensor comprises a plurality of steel needles which are respectively arranged on the side wall in the heat storage water tank and fixed at different heights along the vertical direction, and each steel needle is connected with a resistor in series and is respectively connected with a power supply; each steel needle is respectively connected with the analog input module. In the embodiment, the water level measuring circuit adopts 9 steel needles, the 9 steel needles are respectively arranged at different heights in the heat storage water tank, and each steel needle is connected with a resistor in series and is respectively connected with a 5V power supply; each steel needle is respectively connected with the analog quantity input module, the analog quantity input module is connected with the control module, a 5V power supply provides a bias voltage for the resistor, when a certain steel needle is not in contact with the water surface, the output of the steel needle is high level, when the certain steel needle is in contact with the water surface, the output of the steel needle is low level, and the output of the steel needle is connected to the analog quantity input module and then respectively connected to the input end of the control module. After the control module judges the input quantities, corresponding water level values can be obtained and are transmitted to an LCD display screen to display corresponding water levels. The display is divided into 9 steps, and each step is 1/9 of full water level. The method is simple and easy to realize, omits the traditional A/D converter, has low cost, and can measure the water level in the heat storage water tank.
The temperature sensor arranged in the heat storage water tank comprises a thermistor and an operational amplifier; the thermistor is connected with the operational amplifier, and the operational amplifier is connected with the controller. The thermistor adopts an NTC negative temperature coefficient thermal resistor, as shown in figure 3. The principle of the temperature sensor arranged in the heat storage water tank is that a resistance signal changing along with the temperature is converted into a changing voltage signal by utilizing the characteristic that the resistance value of a thermistor changes along with the temperature, and then the voltage signal is amplified by an operational amplifier to be processed into a 0-3.3V voltage signal. Because the STM32 processor is provided with an AD conversion port, voltage signals can be directly connected to the AD input port of the processor and converted into digital signals, and the circuit has accurate measurement. The operational amplifier adopts an LM324 operational amplifier.
The temperature sensor arranged at the water outlet of the solar heat collector, the temperature sensor arranged on the solar heat collector and the temperature sensor arranged in the drying chamber adopt EE10-FT6 temperature and humidity integrated transmitters. The wind speed sensor adopts an EE65 series wind speed transmitter of Austrian E + E company.
The frequency converter control module comprises a first frequency converter and a second frequency converter, the first frequency converter and the second frequency converter are respectively connected with the air blower and the compressor, and the first frequency converter and the second frequency converter are Siemens MM420 series frequency converters.
The relay module comprises a plurality of relays, and each relay is connected with the air blower, the hot water supply pump, the solar circulating pump and the compressor respectively. The relay can adopt Schneider LC1 series electromagnetic alternating current contactor or LR2 series thermal relay.
The utility model discloses a theory of operation does: the control module detects the temperature of gathering the heat storage water tank through the sensor module, the water level, solar collector's leaving water temperature, the wind speed of air-blower, external temperature, the temperature of drying chamber, preset required stoving temperature and start-up drying-machine as required, detect the water level value in the heat storage water tank through level sensor, be less than the default when the water level, open the solenoid valve moisturizing automatically, this solenoid valve setting is in the inlet tube department of a hot water tank, the solenoid valve is connected with control module. The control module collects the water outlet temperature of the solar thermal collector or the external temperature through the temperature sensor to judge whether the solar heating mode needs to be started, and when the water outlet temperature of the solar thermal collector is lower than a preset value or the external temperature is lower than the preset value, the control module starts the air energy heat pump system to assist in heating and controls the relay module to start the compressor. Hot water in the hot water storage tank is pumped to radiating fins in the dryer through a hot water pump, and hot air radiated by the hot water is sent to the dryer through the radiating fins and the blower. When the drying is in a stable state, namely the required preset temperature is reached, the compressor keeps constant frequency operation. When certain interference occurs, the control module adjusts the running frequency of the compressor through the frequency converter control module until the drying room is stabilized at the temperature value set by the user again. In addition, when the wind speed acquired by the wind speed sensor does not reach the preset wind speed, the control module adjusts the operating frequency of the air blower through the frequency converter control module, so that the wind speed can be stable.
The present invention is not limited to the above embodiments, but only to the preferred embodiments of the present invention, and the present invention should not be limited to the above embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A controller of a solar heat pump drying system comprises a solar heat collector, a solar circulating pump, a hot water supply pump, a heat storage water tank, an air energy heat pump system, a dryer and an air blower, wherein the air energy heat pump system comprises a condenser, a variable frequency compressor, an evaporator and an expansion valve; the solar heat collector is connected with the heat pump in parallel, hot water in the heat storage water tank can be heated at the same time, when the hot water in the heat storage water tank is pumped by the hot water pump and flows through the radiating fins in the dryer, heat is blown into the drying chamber through the blower, and materials are dried through hot air; the method is characterized in that: the controller comprises a sensor module, an analog input module, a control module, an analog output module, a frequency converter control module and a relay module; the sensor module is used for detecting the temperature and the water level of the heat storage water tank, the water outlet temperature of the solar heat collector, the wind speed of the blower, the external temperature and the temperature of the drying chamber; the analog quantity input module is used for inputting the detection signal of the sensor module to the control module; the control module is used for controlling and collecting signals of the analog quantity input module, processing the signals and controlling the working states of the frequency converter control module and the relay module according to the processing result; the analog quantity output module is used for outputting a control signal of the control module; the frequency converter control module is used for controlling the working frequency of the blower and the compressor; the relay module is used for controlling starting and stopping of the air blower, the hot water supply pump, the solar circulating pump and the compressor; the sensor module, the analog input module, the control module and the analog output module are sequentially connected; and the analog quantity output module is respectively connected with the frequency converter control module and the relay module.
2. The controller of a solar thermal pump drying system according to claim 1, wherein: the sensor module comprises a temperature sensor, a water level sensor and a wind speed sensor.
3. The controller of a solar heat pump drying system according to claim 2, wherein: the temperature sensor comprises a temperature sensor arranged in the heat storage water tank, a temperature sensor arranged at the water outlet of the solar heat collector, a temperature sensor arranged on the solar heat collector and a temperature sensor arranged in the drying chamber.
4. The controller of a solar heat pump drying system according to claim 2, wherein: the water level sensor comprises a plurality of steel needles, the steel needles are respectively arranged on the side wall in the heat storage water tank and fixed at different heights along the vertical direction, and each steel needle is connected with a resistor in series and is respectively connected with a power supply; each steel needle is respectively connected with the analog input module.
5. The controller of a solar heat pump drying system according to claim 3, wherein: the temperature sensor arranged in the heat storage water tank comprises a thermistor and an operational amplifier; the thermistor is connected with the operational amplifier, and the operational amplifier is connected with the controller.
6. The controller of a solar heat pump drying system according to claim 3, wherein: the temperature sensor arranged at the water outlet of the solar heat collector, the temperature sensor arranged on the solar heat collector and the temperature sensor arranged in the drying chamber adopt EE10-FT6 temperature and humidity integrated transmitters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610949.1U CN209978521U (en) | 2019-04-30 | 2019-04-30 | Controller of solar heat pump drying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920610949.1U CN209978521U (en) | 2019-04-30 | 2019-04-30 | Controller of solar heat pump drying system |
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| CN209978521U true CN209978521U (en) | 2020-01-21 |
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| CN201920610949.1U Active CN209978521U (en) | 2019-04-30 | 2019-04-30 | Controller of solar heat pump drying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815687A (en) * | 2021-02-04 | 2021-05-18 | 钟学能 | Air energy heat pump drying system with alarm function |
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2019
- 2019-04-30 CN CN201920610949.1U patent/CN209978521U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815687A (en) * | 2021-02-04 | 2021-05-18 | 钟学能 | Air energy heat pump drying system with alarm function |
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Assignee: GUANGXI BINYANG COUNTY RONGLIANG AGRICULTURAL TECHNOLOGY CO.,LTD. Assignor: GUANGXI SHENGWEI ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: X2022450000006 Denomination of utility model: A controller of solar heat pump drying system Granted publication date: 20200121 License type: Common License Record date: 20220708 |