A solar air source heat pump heating intelligent control system

Abstract

A solar air source heat pump heating intelligent control system includes a logic control unit, a signal input unit, an action output unit, a remote monitoring unit, an interference shielding unit, a human-computer interaction unit and a communication unit; the signal input unit collects various signals of the entire system during operation; through a comprehensive evaluation of parameters such as ambient temperature, humidity, irradiation intensity, existing system heat and user required heat, the user's usage habits are predicted, the number of starts and stops and the operating status of the air source heat pump are intelligently controlled, and the heating end temperature and heating flow are adjusted through system-level frequency conversion to match the heating load. The two energy sources complement each other, maximize energy conservation, and meet heating needs at the same time. This control system is suitable for solar energy and air source heat pump coupled hot water system or heating system. The control system is simple and easy to implement, low cost, avoids frequent starts and stops of air source heat pumps, and effectively reduces the power consumption of the heating system.

Description

Technical Field

[0001] The utility model relates to the technical field of clean energy, in particular to an intelligent control system for heating with a solar air source heat pump. Background Art

[0002] Air source heat pump technology is a clean energy technology that has received much attention in recent years. It is driven by the compressor of the heat pump device to convert low-grade heat energy in the air into high-grade heat energy that can be directly used without generating any pollution. At the same time, the energy efficiency ratio is greater than 1. Compared with traditional heating methods such as electric boilers and gas boilers, it can save a lot of energy. Therefore, air source heat pump heating is a clean and energy-saving heating method. However, since the heat source of the air source heat pump is air, this heat pump technology is greatly affected by the ambient temperature, especially the low ambient temperature will greatly reduce the energy efficiency ratio. In addition, the frosting of the fins of the air source heat pump is also a major problem that restricts the improvement of the energy efficiency ratio.

[0003] Solar heating technology has been developed for many years and is widely used in both hot water and heating. However, this heating method is greatly affected by the environment. The solar energy collection efficiency is greatly reduced in winter or on rainy days, and it cannot provide the heat required by users.

[0004] In many areas with low winter temperatures but abundant solar energy resources, solar energy + air source heat pump heating systems are becoming more and more widely used. Solar energy and air source heat pumps complement each other, improve energy efficiency, efficiently utilize energy, and save operating costs.

[0005] However, since the solar energy + air source heat pump system is just a simple combination and no in-depth research has been done on the control system, it has not achieved the expected results in actual operation. There are high initial investment costs, high operating costs, unstable heating temperature, poor heating effect, and energy waste. Summary of the invention

[0006] The technical problem to be solved by the utility model is to propose a solar air source heat pump heating intelligent control system which can save energy to the maximum extent and meet the heating demand in view of the deficiencies of the prior art.

[0007] The technical problem to be solved by the utility model is achieved through the following technical solutions, a solar air source heat pump heating intelligent control system, which is characterized by:

[0008] It includes a logic control unit, a signal input unit, an action output unit, a remote monitoring unit, an interference shielding unit, a human-computer interaction unit and a communication unit;

[0009] The signal input unit collects various signals of the entire system during operation: including analog and digital signals;

[0010] The logic control unit is connected to the signal input unit through the communication unit, receives the signal parameters, and judges the system operation state and the output state of each external actuator according to the parameters; controls the external actuator through the action output unit connected thereto to perform the corresponding action;

[0011] The human-machine interaction unit connected to the logic control unit can conveniently control the external actuator or modify the system parameters through the touch screen and button components;

[0012] The interference shielding unit connected to the logic control unit effectively shields various types of interference to ensure stable operation of all parts of the control system;

[0013] The remote monitoring unit connected to the logic control unit detects, samples and performs necessary preprocessing on various signal inputs during the system operation process, and outputs them in a certain form.

[0014] The technical problem to be solved by the utility model can be further achieved through the following technical solutions, and the output forms are printed reports, display screens and televisions.

[0015] The technical problem to be solved by the utility model can also be further achieved by the following technical solutions. The signal input unit collects signals including: temperature parameters, environmental humidity parameters, pressure parameters of pipelines in various parts of the system, water tank water level parameters, pipeline flow parameters, and irradiation parameters;

[0016] The technical problem to be solved by the present invention can also be further achieved through the following technical scheme, wherein the temperature parameters are the pipe temperatures of various parts of the system, the system water tank temperature, the external environment temperature and the indoor temperature.

[0017] Compared with the prior art, the utility model predicts the user's usage habits through comprehensive evaluation of parameters such as ambient temperature, humidity, radiation intensity, existing system heat and user required heat, and intelligently controls the start and stop quantity and operating status of the air source heat pump. Through system-level frequency conversion, the temperature and heat flow at the heating end are adjusted to match the heating load. The two energy sources complement each other, maximize energy conservation, and meet heating needs at the same time. This control system is suitable for solar energy and air source heat pump coupled hot water system or heating system. The control system is simple and easy to implement, low cost, avoids frequent start and stop of air source heat pumps, and effectively reduces the power consumption of the heating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a logic block diagram of the utility model;

[0019] Figure 2 is the circuit schematic;

[0020] Figure 3 This is the schematic diagram of the logic control unit. DETAILED DESCRIPTION

[0021] The specific technical solutions of the present invention are further described below. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer and to facilitate those skilled in the art to further understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them, and do not constitute a limitation on the rights thereof. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] A solar air source heat pump heating intelligent control system comprises: a logic control unit 1, a signal input unit 2, an action output unit 3, a remote monitoring unit 6, an interference shielding unit 7, a human-computer interaction unit 5, and a communication unit 4.

[0023] The signal input unit collects various signals, analog and digital signals during the operation of the heating system.

[0024] The logic control unit is connected to the signal input unit through the communication unit, receives the signal parameters, and judges the system operation state and the output state of each external actuator according to the parameters. The external actuator is controlled through the action output unit to perform the corresponding action.

[0025] Equipped with a human-computer interaction unit, users can conveniently control external actuators through touch screens, buttons and other components, and can also modify system parameters, which is convenient for on-site debugging by operation and maintenance personnel, and users can adjust the operating status according to actual needs.

[0026] Equipped with interference shielding unit, due to the complex project site environment, there may be various electromagnetic interferences, including group pulse interference, electrostatic interference, lightning surge interference, etc., which will cause communication errors, equipment operation out of control, and serious damage to the equipment. The interference shielding unit can effectively shield various types of interference and ensure the stable operation of all parts of the control system.

[0027] Equipped with a remote monitoring unit, it mainly detects, samples and performs necessary pre-processing on various signal inputs during the system operation process, and outputs them in a certain form, such as printed reports, display screens and televisions, etc., to provide detailed data for operation and maintenance personnel to help them analyze and understand the on-site situation.

[0028] The signal input unit collects various signals of the heating system during operation through external input sensors, including but not limited to: temperature parameters, pipe temperatures of various parts of the system, system water tank temperature, ambient temperature, indoor temperature; ambient humidity parameters, pipe pressure parameters of various parts of the system, water tank water level parameters, pipe flow parameters, irradiation parameters, and heat parameters.

[0029] The signal input unit is connected to the logic control unit through the communication unit, and transmits the collected signal parameters to the logic control unit as input parameters of the logic operation.

[0030] The logic control unit is connected to the action output unit through the communication unit, and transmits the result of the logic operation to the action output unit.

[0031] The action output unit is connected to the external actuator to control the action actuator to complete the corresponding action.

[0032] At the same time, the logic control unit is connected with the human-machine interaction unit through the communication unit, and the logic control unit is connected with the remote monitoring unit through the communication unit.

[0033] The interference shielding unit is connected to each component unit of the control system or exists inside each component unit to achieve interference shielding.

[0034] Air source heat pump load self-balancing control logic: The logic control unit receives the signal transmitted by the signal input unit, and judges whether the air source heat pump unit is turned on and the number of units turned on according to the difference between the air source heat pump inlet temperature and the target temperature. The average value of the return water temperature collected within 2 minutes is used as the return water temperature for judgment. The target temperature is the set temperature of the air source heat pump unit. When heating, when the return water temperature is less than a certain difference from the target temperature, the number of air source heat pumps is gradually increased until it matches the heating load; when the return water temperature is greater than a certain difference from the target temperature, the number of air source heat pumps is gradually reduced until it matches the heating load. Automatically change the number of air source heat pumps to match the heat source with the load. When cooling, the return water temperature is opposite to the target temperature. Gradually put the units into operation to avoid the impact of excessive starting current on the power grid. At the same time, intelligently adjust the operation time of the air source heat pump unit, and put different units into each time to avoid the situation where a single unit works for too long, thereby extending the service life of the unit.

[0035] Solar energy and air source heat pump operation control logic: The principle of adjusting the operating status of solar energy and air source heat pumps is to give priority to solar energy heating and use air source heat pumps as a supplementary heat source.

[0036] This control method is suitable for solar energy and air source heat pump coupled hot water system or heating system. The control method is simple and easy to implement, low cost, avoids frequent start and stop of air source heat pump, and effectively reduces the power consumption of heating system.

Claims

1. A solar air source heat pump heating intelligent control system, characterized in that: It includes a logic control unit, a signal input unit, an action output unit, a remote monitoring unit, an interference shielding unit, a human-computer interaction unit and a communication unit; The signal input unit collects various signals of the entire system during operation: including analog and digital signals; The logic control unit is connected to the signal input unit through the communication unit, receives the signal parameters, and judges the system operation state and the output state of each external actuator according to the parameters; controls the external actuator through the action output unit connected thereto to perform the corresponding action; The human-machine interaction unit connected to the logic control unit can conveniently control the external actuator or modify the system parameters through the touch screen and button components; The interference shielding unit effectively shields various types of interference to ensure stable operation of all parts of the control system; The remote monitoring unit connected to the logic control unit detects, samples and performs necessary preprocessing on various signal inputs during the system operation process, and outputs them in a certain form.

2. The solar air source heat pump heating intelligent control system according to claim 1 is characterized in that: The output forms are printed reports, display screens and televisions.

3. The solar air source heat pump heating intelligent control system according to claim 1 is characterized in that: The signal input unit collects signals including: temperature parameters, environmental humidity parameters, pipeline pressure parameters of various parts of the system, water tank water level parameters, pipeline flow parameters and irradiation parameters.

4. The solar air source heat pump heating intelligent control system according to claim 3 is characterized in that: The temperature parameters include the pipe temperature of each part of the system, the system water tank temperature, the external environment temperature and the indoor temperature.

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