Air conditioner heat source multi-energy complementary control system

Abstract

The utility model discloses a multi-energy complementary control system for a heat source of an air conditioner. Comprising a control system used for coordinating operation of all energy sources, a solar heat collector used for collecting solar energy, an air source heat pump used for extracting heat energy from air, a water source heat pump used for extracting heat energy from a heat storage water tank and an energy storage device used for storing heat energy, and the solar heat collector is connected with the energy storage device through a pipeline. According to the air conditioner heat source multi-energy complementation control system, the input end of the controller is connected with the temperature sensors for detecting the temperature of the water system, real-time monitoring of air conditioner heat consumption and heat source difference heat is achieved, and according to the temperature numerical value set by the control host, the temperature of the water system is controlled to be constant according to the temperature numerical value set by the control host. Start-stop switching heat sources are reasonably regulated and controlled, so that the system operates economically and reasonably.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning system technology, specifically relating to an air conditioning heat source multi-energy complementary control system. Background Technology

[0002] In the field of air conditioning system technology, traditional air conditioning systems mostly rely on a single energy source, such as electricity or gas. This model suffers from the dual problems of low energy efficiency and high carbon emissions. When relying on electricity, energy is wasted significantly during conversion and utilization, resulting in poor overall energy efficiency; relying on gas generates a large amount of carbon emissions, putting considerable pressure on the environment.

[0003] With advancements in renewable energy technologies, various energy sources, such as solar energy, air source heat pumps, and waste heat from industrial processes, have been incorporated into the selection of air conditioning heat sources. The application of these new energy sources offers the possibility of improving the energy efficiency of air conditioning systems and reducing carbon emissions. However, when multiple heat sources are used simultaneously, how to rationally allocate them becomes a key challenge.

[0004] Currently, the industry lacks an effective mechanism to achieve the scientific synergy of multiple heat sources, resulting in air conditioning systems being unable to fully utilize the advantages of various energy sources, thus limiting performance improvement and the promotion and application of new energy sources. Based on this, this utility model aims to provide a multi-energy complementary control system for air conditioning heat sources to solve the problem of rational allocation of multiple heat sources and improve the energy efficiency and environmental friendliness of air conditioning systems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-energy complementary control system for air conditioning heat sources to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air conditioning heat source multi-energy complementary control system, including a control system for coordinating the operation of various energy sources, a solar collector for collecting solar energy, an air source heat pump for extracting heat energy from the air, a water source heat pump for extracting heat energy from a hot water storage tank, and an energy storage device for storing heat energy. The solar collector is connected to the energy storage device through a pipeline for collecting solar energy and transferring the converted heat energy to the energy storage device.

[0007] The air source heat pump is connected to the energy storage device through a pipeline, and is used to extract heat energy from the air and transfer it to the energy storage device.

[0008] The water source heat pump is connected to the hot water storage tank and the energy storage device through a pipeline, and is used to extract heat energy and transfer it to the energy storage device.

[0009] The control system is connected to the solar collector, air source heat pump, water source heat pump and energy storage device respectively to coordinate the operation of each energy source. The control system is also connected to the air conditioning terminal equipment to regulate the operation of the entire system according to demand.

[0010] Preferably, the control system includes a temperature sensor, a control processor, a CAN bus, an RS232 bus, an I / O interface, and a control host. The temperature sensor is distributed at each location in the system where the temperature needs to be detected and is connected to the control processor. The control processor is connected to the temperature sensor, the CAN bus, the RS232 bus, and the I / O interface respectively. It is used to receive and process the signals from the temperature sensor, and to realize data input and output through the I / O interface. It is connected to the terminal combined air conditioning unit through the CAN bus and to the control host through the RS232 bus.

[0011] Preferably, one end of the CAN bus is connected to the control processor and the other end is connected to the terminal combined air conditioning unit, for transmitting data between the control processor and the terminal combined air conditioning unit;

[0012] The RS232 bus is connected to the control processor at one end and to the control host at the other end, and is used to transmit data between the control processor and the control host.

[0013] The control host is equipped with a visual control interface. It receives data from the temperature sensor after processing by the control processor via an RS232 bus, and controls the operation or shutdown of each heat source or combined air conditioning terminal via the RS232 bus and the control processor.

[0014] Preferably, the temperature sensors include an air compressor cooling water inlet temperature sensor, an air compressor cooling water outlet temperature sensor, a water source heat pump low-temperature side inlet temperature sensor, a water source heat pump low-temperature side outlet temperature sensor, an energy storage tank low-temperature side inlet temperature sensor, an energy storage tank low-temperature side outlet temperature sensor, an energy storage tank air conditioner inlet temperature sensor, and an energy storage tank air conditioner outlet temperature sensor.

[0015] Preferably, the air compressor cooling water inlet temperature sensor is installed at the air compressor cooling water inlet pipe and connected to the control processor via a signal line; the air compressor cooling water outlet temperature sensor is installed at the air compressor cooling water outlet pipe and connected to the control processor via a signal line; the water source heat pump low-temperature side inlet temperature sensor is installed at the water source heat pump low-temperature side inlet pipe and connected to the control processor via a signal line; and the water source heat pump low-temperature side outlet temperature sensor is installed at the water source heat pump low-temperature side outlet pipe and connected to the control processor via a signal line.

[0016] Preferably, the low-temperature inlet temperature sensor of the energy storage tank is installed at the low-temperature inlet pipe of the energy storage tank and connected to the control processor via a signal line; the low-temperature outlet temperature sensor of the energy storage tank is installed at the low-temperature outlet pipe of the energy storage tank and connected to the control processor via a signal line; the air conditioning inlet temperature sensor of the energy storage tank is installed at the air conditioning inlet pipe of the energy storage tank and connected to the control processor via a signal line; and the air conditioning outlet temperature sensor of the energy storage tank is installed at the air conditioning outlet pipe of the energy storage tank and connected to the control processor via a signal line.

[0017] Preferably, the solar collector is installed on the roof and connected to the energy storage tank via a pipe; the air source heat pump is installed outdoors and connected to the energy storage tank via a pipe; the water source heat pump is installed in a dedicated machine room and connected to the energy storage tank via a pipe.

[0018] Preferably, the energy storage device includes an energy storage tank, connecting pipes, and a temperature monitoring component. The connecting pipes are used to connect the energy storage tank storing thermal energy to a solar collector, an air source heat pump, a water source heat pump, and air conditioning terminal equipment for heat energy transfer. The energy storage device is installed in a dedicated machine room and is connected to various available heat source systems of the air conditioning system through pipes. All types of air conditioning heat sources are connected in parallel, and new heat sources can be connected in parallel to the air conditioning system.

[0019] Preferably, the automatic control switching function in the control system automatically switches energy sources according to energy availability and actual needs, and optimizes the configuration of all energy types connected in parallel.

[0020] Preferably, the control host is equipped with a human-machine interface, through which the heat source or controller is operated. The human-machine interface is used to provide a graphical interface for setting system control requirements and displaying the working status of each control unit.

[0021] Compared with the prior art, the technical effects and advantages of this utility model are as follows: This air conditioning heat source multi-energy complementary control system achieves real-time monitoring of the heat consumption of air conditioning and the heat source difference by connecting temperature sensors that detect the water system temperature to the input end of the controller, and reasonably controls the start and stop switching of heat sources according to the temperature value set by the control host, so that the system can operate economically and rationally.

[0022] The system's control system features automatic switching capabilities, optimizing the configuration of all parallel energy sources based on energy availability and actual demand, and automatically switching between them. Furthermore, multiple heat sources act as backups for each other, enhancing system stability and preventing system failure due to a single energy source malfunction. The control host's user-friendly interface facilitates operation and monitoring, creating favorable conditions for efficient system operation and the application of new energy sources. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the air conditioning heat source switching control system of this utility model;

[0024] Figure 2 This is a schematic diagram of the air conditioning heat source switching control system of this utility model;

[0025] Figure 3 This is a schematic diagram of the combined principle of the air conditioning heat source system of this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-3 This utility model provides a technical solution: an air conditioning heat source multi-energy complementary control system, including a control system for coordinating the operation of various energy sources, a solar collector for collecting solar energy, an air source heat pump for extracting heat energy from the air, a water source heat pump for extracting heat energy from a hot water storage tank, and an energy storage device for storing heat energy. The solar collector is connected to the energy storage device 5 through a pipe, and is used to collect solar energy and transfer the converted heat energy to the energy storage device.

[0028] An air source heat pump is connected to an energy storage device via pipes to extract heat energy from the air and transfer it to the energy storage device.

[0029] The water source heat pump is connected to the hot water storage tank and the energy storage device through pipes to extract heat energy and transfer it to the energy storage device;

[0030] The control system is connected to the solar collector, air source heat pump, water source heat pump and energy storage device to coordinate the operation of each energy source. The control system is also connected to the air conditioning terminal equipment to regulate the operation of the entire system according to demand.

[0031] The control system includes temperature sensors, a control processor, a CAN bus, an RS232 bus, an I / O interface, and a control host. Temperature sensors are distributed at various locations in the system where temperature needs to be detected and are connected to the control processor. The control processor is connected to the temperature sensors, the CAN bus, the RS232 bus, and the I / O interface to receive and process signals from the temperature sensors. It also performs data input and output through the I / O interface, connects to the terminal combined air conditioning unit through the CAN bus, and connects to the control host through the RS232 bus.

[0032] One end of the CAN bus is connected to the control processor, and the other end is connected to the terminal combined air conditioning unit, which is used to transmit data between the control processor and the terminal combined air conditioning unit.

[0033] The RS232 bus connects the control processor at one end and the control host at the other end, and is used to transmit data between the control processor and the control host.

[0034] The control host is equipped with a visual control interface. It receives data from the temperature sensor via RS232 bus, which is then processed by the control processor. It also controls the operation or shutdown of each heat source or combined air conditioning terminal via RS232 bus and control processor.

[0035] Temperature sensors include air compressor cooling water inlet temperature sensor, air compressor cooling water outlet temperature sensor, water source heat pump low-temperature side inlet temperature sensor, water source heat pump low-temperature side outlet temperature sensor, energy storage tank low-temperature side inlet temperature sensor, energy storage tank low-temperature side outlet temperature sensor, energy storage tank air conditioner inlet temperature sensor, and energy storage tank air conditioner outlet temperature sensor.

[0036] The air compressor cooling water inlet temperature sensor is installed at the air compressor cooling water inlet pipe and connected to the control processor via a signal line. The air compressor cooling water outlet temperature sensor is installed at the air compressor cooling water outlet pipe and connected to the control processor via a signal line. The water source heat pump low-temperature side inlet temperature sensor is installed at the water source heat pump low-temperature side inlet pipe and connected to the control processor via a signal line. The water source heat pump low-temperature side outlet temperature sensor is installed at the water source heat pump low-temperature side outlet pipe and connected to the control processor via a signal line.

[0037] The low-temperature inlet temperature sensor of the energy storage tank is installed at the low-temperature inlet pipe of the energy storage tank and connected to the control processor via a signal line. The low-temperature outlet temperature sensor of the energy storage tank is installed at the low-temperature outlet pipe of the energy storage tank and connected to the control processor via a signal line. The air conditioning inlet temperature sensor of the energy storage tank is installed at the air conditioning inlet pipe of the energy storage tank and connected to the control processor via a signal line. The air conditioning outlet temperature sensor of the energy storage tank is installed at the air conditioning outlet pipe of the energy storage tank and connected to the control processor via a signal line.

[0038] Solar collectors are installed on the roof and connected to the energy storage tank via pipes; air source heat pumps are installed outdoors and connected to the energy storage tank via pipes; water source heat pumps are installed in a dedicated machine room and connected to the energy storage tank via pipes.

[0039] The energy storage device includes an energy storage tank, connecting pipes, and temperature monitoring components. The connecting pipes are used to connect the energy storage tank storing thermal energy to solar collectors, air source heat pumps, water source heat pumps, and air conditioning terminal equipment for heat energy transfer. The energy storage device is installed in a dedicated machine room and is connected to various available heat source systems for air conditioning through pipes. All types of air conditioning heat sources are connected in parallel, and new heat sources can be connected in parallel to the air conditioning system.

[0040] Temperature monitoring points: The control system is equipped with a total of 8 main temperature monitoring points, namely T1C / J; T2C / J; T3J / C; T4J / C.

[0041] Control system: Based on the real-time parameters received from the temperature monitoring points, it assesses the condition of each heat source and scientifically and rationally switches heat sources to meet the heating needs of the air conditioning system.

[0042] The automatic control switching function in the control system automatically switches energy sources based on energy availability and actual demand, optimizing the configuration of all parallel energy types. The logic of the automatic control switching system is as follows:

[0043] When the air compressor is turned on, monitor the inlet and outlet water temperatures of the cooling water at the connection between the air compressor and the hot water storage tank, T1J / C (40 / 30℃). At this time, the waste heat of the air compressor provides heat to the hot water storage tank and is transferred to the energy storage tank through the water source heat pump unit. The air conditioning system obtains heat from the energy storage tank and supplies it to the air conditioning terminals. At this time, the air conditioning supply and return water detection point T4J / C maintains a stable operation of 60 / 50℃.

[0044] When the waste heat from the air compressor is insufficient, the return water temperature of the air conditioner decreases (the air conditioning unit's supply and return water temperature monitoring point T4J ≤ 50℃). In this case, it is necessary to consider turning on other heat sources to supplement the insufficient energy. When the weather is good and solar energy is abundant, the solar collector generates hot water that is directly connected in parallel to the hot water storage tank, providing heat energy to the air conditioner along with the air compressor system. When solar energy is insufficient, the air source heat pump unit is turned on to generate hot water, providing heat to the energy storage tank and supplying it to the air conditioning terminals. This maintains the stable heating demand of the air conditioning terminals, i.e., maintaining the air conditioning supply and return water monitoring point T4J / C at a stable operating temperature of 60 / 50℃.

[0045] When there is excess heat from the air compressor, the cooling tower dissipates it to the outdoor atmosphere; when there is excess heat from the solar collector, it is supplied for domestic hot water use.

[0046] The control host is equipped with a human-machine interface, through which the heat source or controller can be operated. The human-machine interface provides a graphical interface for setting system control requirements and displaying the working status of each control unit.

[0047] All logical functions need to be implemented by the air conditioning heat source switching control system.

[0048] Temperature detection points T1C / J, T2C / J, T3J / C, and T4J / C within the system transmit real-time temperature values ​​to the control processor via corresponding 1-8# AD / DA converters. The controller is an STC12C5A60S2 microcontroller. The input terminal of the combined air conditioner is interconnected with the CAN bus on the controller. The input terminal of the control host is interconnected with the output terminal of the controller via an RS232 bus. The control host is used to receive data fed back from the temperature sensors and to control the operation or shutdown of each heat source or combined air conditioner terminal.

[0049] The control host is equipped with a human-machine interface, through which the control host controls the heat source or controller. The human-machine interface provides a graphical interface for setting system control requirements and displaying the working status of each control unit.

[0050] Specifically, in use, solar collectors are installed on the roof and connected to the energy storage tank of energy storage device 5 in a dedicated machine room via pipes to collect solar energy and transfer heat energy. An air-source heat pump is installed outdoors and also connected to the energy storage tank of the energy storage device via pipes to extract heat energy from the air and transfer it to the tank. A water-source heat pump is installed in the dedicated machine room and connected to the energy storage tank of energy storage device 5 via pipes to extract and transfer waste heat from the air compressor. The control system is connected to the solar collectors, air-source heat pump, water-source heat pump, energy storage device, and air conditioning terminal equipment via wiring. Temperature sensors included in control system 1 are distributed at key locations in the system and connected to the control processor via signal lines. The control processor is in turn connected to the terminal combined air conditioning unit and the control host via CAN bus, RS232 bus, and I / O interface to achieve data interaction and control.

[0051] The system is equipped with eight main temperature detection points, consisting of inlet and outlet water temperature sensors for the air compressor cooling water, inlet and outlet water temperature sensors for the low-temperature side of the water source heat pump, inlet and outlet water temperature sensors for the low-temperature side of the energy storage tank, and inlet and outlet water temperature sensors for the air conditioning side of the energy storage tank. These temperature sensors monitor the temperature at each location in real time and convert the temperature values ​​into signals through the corresponding 1-8# AD / DA converters, which are then sent to the control processor (STC12C5A60S2 microcontroller).

[0052] Normal operating mode: When the air compressor is turned on and the inlet and outlet water temperatures of the cooling water at the connection point to the hot water storage tank are monitored to be T1J / C (40 / 30℃), the waste heat of the air compressor is used to heat the hot water storage tank. The heat is then sent to the energy storage tank by the water source heat pump unit. The air conditioning system obtains heat from the energy storage tank to supply the air conditioning terminals, maintaining the air conditioning supply and return water detection point T4J / C at a stable operating temperature of 60 / 50℃.

[0053] Energy switching mode: When the waste heat of the air compressor is insufficient and the return water temperature of the air conditioner drops (T4J≤50℃), if the weather is good and there is sufficient solar energy, the hot water generated by the solar collector is directly connected in parallel to the hot water storage tank and used together with the air compressor system to heat the air conditioner; if there is insufficient solar energy, the air source heat pump unit is turned on to generate hot water to heat the energy storage tank and supply the air conditioner terminal, always maintaining the air conditioner supply and return water detection point T4J / C at 60 / 50℃;

[0054] When there is excess heat from the air compressor, it is dissipated to the outdoor atmosphere through a cooling tower; when there is excess heat from the solar collector, it is supplied for domestic hot water use. The control processor receives and processes signals from the temperature sensor, communicates with the terminal combined air conditioning unit via CAN bus, and communicates with the control host via RS232 bus. The control host receives the temperature data processed by the control processor via RS232 bus, and controls the operation or shutdown of each heat source device or combined air conditioning terminal via RS232 bus and control processor based on this data. The control host is equipped with a human-machine interface, through which operators can set system control requirements and view the working status of each control unit in real time.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-energy complementary control system for air conditioning heat sources, comprising a control system for coordinating the operation of various energy sources, a solar collector for collecting solar energy, an air source heat pump for extracting heat energy from the air, a water source heat pump for extracting heat energy from a hot water storage tank, and an energy storage device for storing heat energy, characterized in that: The solar collector is connected to the energy storage device via a pipe, and is used to collect solar energy and transfer the converted heat energy to the energy storage device. The air source heat pump is connected to the energy storage device through a pipeline, and is used to extract heat energy from the air and transfer it to the energy storage device. The water source heat pump is connected to the hot water storage tank and the energy storage device through a pipeline, and is used to extract heat energy and transfer it to the energy storage device. The control system is connected to the solar collector, air source heat pump, water source heat pump and energy storage device respectively to coordinate the operation of each energy source. The control system is also connected to the air conditioning terminal equipment to regulate the operation of the entire system according to demand.

2. The air conditioning heat source multi-energy complementary control system according to claim 1, characterized in that: The control system includes temperature sensors, a control processor, a CAN bus, an RS232 bus, an I / O interface, and a control host. The temperature sensors are distributed at various locations in the system where temperature needs to be detected and are connected to the control processor. The control processor is connected to the temperature sensors, the CAN bus, the RS232 bus, and the I / O interface, respectively, to receive and process the signals from the temperature sensors, and to input and output data through the I / O interface. It is also connected to the terminal combined air conditioning unit through the CAN bus and to the control host through the RS232 bus.

3. The air conditioning heat source multi-energy complementary control system according to claim 2, characterized in that: The CAN bus is connected to the control processor at one end and to the terminal combined air conditioning unit at the other end, and is used to transmit data between the control processor and the terminal combined air conditioning unit. The RS232 bus is connected to the control processor at one end and to the control host at the other end, and is used to transmit data between the control processor and the control host. The control host is equipped with a visual control interface. It receives data from the temperature sensor after processing by the control processor via an RS232 bus, and controls the operation or shutdown of each heat source or combined air conditioning terminal via the RS232 bus and the control processor.

4. The air conditioning heat source multi-energy complementary control system according to claim 1, characterized in that: Temperature sensors include air compressor cooling water inlet temperature sensor, air compressor cooling water outlet temperature sensor, water source heat pump low-temperature side inlet temperature sensor, water source heat pump low-temperature side outlet temperature sensor, energy storage tank low-temperature side inlet temperature sensor, energy storage tank low-temperature side outlet temperature sensor, energy storage tank air conditioner inlet temperature sensor, and energy storage tank air conditioner outlet temperature sensor.

5. The air conditioning heat source multi-energy complementary control system according to claim 4, characterized in that: The air compressor cooling water inlet temperature sensor is installed at the air compressor cooling water inlet pipe and connected to the control processor via a signal line. The air compressor cooling water outlet temperature sensor is installed at the air compressor cooling water outlet pipe and connected to the control processor via a signal line. The water source heat pump low-temperature side inlet temperature sensor is installed at the water source heat pump low-temperature side inlet pipe and connected to the control processor via a signal line. The water source heat pump low-temperature side outlet temperature sensor is installed at the water source heat pump low-temperature side outlet pipe and connected to the control processor via a signal line.

6. The air conditioning heat source multi-energy complementary control system according to claim 4, characterized in that: The low-temperature inlet temperature sensor of the energy storage tank is installed at the low-temperature inlet pipe of the energy storage tank and connected to the control processor via a signal line. The low-temperature outlet temperature sensor of the energy storage tank is installed at the low-temperature outlet pipe of the energy storage tank and connected to the control processor via a signal line. The air conditioning inlet temperature sensor of the energy storage tank is installed at the air conditioning inlet pipe of the energy storage tank and connected to the control processor via a signal line. The air conditioning outlet temperature sensor of the energy storage tank is installed at the air conditioning outlet pipe of the energy storage tank and connected to the control processor via a signal line.

7. The air conditioning heat source multi-energy complementary control system according to claim 1, characterized in that: The solar collector is installed on the roof and connected to the energy storage tank via pipes; the air source heat pump is installed outdoors and connected to the energy storage tank via pipes; the water source heat pump is installed in a dedicated machine room and connected to the energy storage tank via pipes.

8. The air conditioning heat source multi-energy complementary control system according to claim 1, characterized in that: The energy storage device includes an energy storage tank, connecting pipes, and a temperature monitoring component. The connecting pipes are used to connect the energy storage tank storing thermal energy to solar collectors, air source heat pumps, water source heat pumps, and air conditioning terminal equipment for heat energy transfer. The energy storage device is installed in a dedicated machine room and is connected to various available heat source systems of the air conditioning system through pipes. All types of air conditioning heat sources are connected in parallel, and new heat sources can be connected in parallel to the air conditioning system.

9. A multi-energy complementary control system for air conditioning heat sources according to claim 1, characterized in that: The automatic control switching function in the control system automatically switches energy sources according to energy availability and actual needs, optimizing the configuration of all parallel energy types.

10. A multi-energy complementary control system for air conditioning heat sources according to claim 3, characterized in that: The control host is equipped with a human-machine interface, through which the heat source or controller can be operated. The human-machine interface is used to provide a graphical interface to set system control requirements and display the working status of each control unit.

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