Air energy heat pump compressor driver

Abstract

The utility model discloses an air energy heat pump compressor driver, which relates to the technical field of frequency conversion control, and comprises a control circuit, and the control circuit comprises two single chip microcomputers including communication chips; the power supply circuit comprises a step-down chip and is used for outputting 15V, 12V, 8V, 5V and 3.3 V direct-current voltages, and the 12V direct-current voltage is directly input to the relay; the IPM module comprises a temperature acquisition circuit and an overload protection circuit; the storage circuit comprises a storage chip; the PFC module comprises PFC voltage detection and PFC overload protection; and the electronic expansion valve circuit is used for adjusting the flow of the refrigerant. The air energy heat pump compressor driver is responsible for controlling the three expansion valves and adjusting the flow of a refrigerant, so that efficient operation of a system under different working conditions is ensured.

Description

Technical Field

[0001] This utility model relates to the field of frequency conversion control processing technology, specifically to an air source heat pump compressor driver. Background Technology

[0002] The air source heat pump industry is a new type of green energy industry. Air source water heaters, also known as "fourth-generation water heaters," utilize the working principle of heat pumps to absorb low-energy heat from the air, exchange heat in an intermediate medium, and compress it into high-temperature gas. This gas is then circulated through a pipe system to heat water. Its power consumption is only 1 / 4 of that of electric water heaters and 1 / 3 of that of gas water heaters, making it more energy-efficient than electric-assisted solar water heaters.

[0003] The variable frequency control of existing compressors is not effective.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed an air source heat pump compressor driver. Utility Model Content

[0005] The purpose of this invention is to provide an air-source heat pump compressor driver 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 source heat pump compressor driver, including a control circuit, the control circuit comprising:

[0007] Two microcontrollers, including a communication chip;

[0008] The power supply circuit includes a step-down chip for outputting 15V, 12V, 8V, 5V and 3.3V DC voltages, with the 12V DC voltage directly input to the relay;

[0009] The IPM module includes a temperature acquisition circuit and an overload protection circuit.

[0010] Storage circuits, including storage chips;

[0011] PFC module, including PFC voltage detection and PFC overload protection;

[0012] Electronic expansion valve circuit, used to regulate refrigerant flow.

[0013] Furthermore, the power supply circuit also includes a transformer and a rectifier bridge, which are used to supply mains power to the step-down chip.

[0014] Furthermore, the PFC module works in conjunction with other power management modules.

[0015] Furthermore, the temperature acquisition circuit in the IPM module is used to detect the temperature of the IPM module.

[0016] Furthermore, the storage circuit is used to save important system data, operating parameters, and operating status parameters.

[0017] Furthermore, the main control microcontroller is responsible for core control and communication with external systems; the auxiliary microcontroller is responsible for processing sensor data and driving specific modules.

[0018] Furthermore, the electronic expansion valve circuit adjusts the refrigerant flow rate based on system operating conditions and sensor input.

[0019] This utility model provides an air-source heat pump compressor driver with the following advantages: It has a protection circuit, a drive circuit, and a storage circuit. During startup, 220V AC mains power is connected to the circuit, passing through a transformer and rectifier bridge before entering the step-down chip. The step-down chip processes the voltage to output 15V, 12V, 8V, 5V, and 3.3V DC voltages, ensuring normal power supply to all components. A power factor correction (PFC) module improves power efficiency and prevents system overload through voltage detection and overload protection. An IPM module drives the motor, adjusting its speed according to system requirements, while monitoring temperature and providing overload protection to ensure safe motor operation. Nine relays control the start and stop of the air conditioning system, fan, compressor, and other equipment, achieving equipment protection and safety control. A sensor input module monitors environmental parameters in real time, such as temperature, humidity, and liquid or gas flow rate, providing feedback information to the microcontroller for precise control. An electronic expansion valve controls the refrigerant flow rate to adjust the heat exchange efficiency of the refrigeration system. This circuit controls three expansion valves to regulate the refrigerant flow rate, thereby ensuring efficient system operation under different working conditions. The isolated communication circuit serves as a protective measure, ensuring secure communication, while the 485 communication interface supports remote device monitoring and control. The storage circuit is used to save operating parameters and historical data. Through microcontroller control, the various modules work closely together to automatically adjust motor speed and power, enabling faster and more precise temperature control. Utilizing frequency conversion technology, the compressor's power supply frequency is automatically adjusted based on ambient temperature, allowing the room to quickly reach the designated temperature, achieving comfortable temperature control and rapid energy savings. Attached Figure Description

[0020] Figure 1 This is a circuit diagram of the first part of an air-source heat pump compressor driver according to the present invention;

[0021] Figure 2 This is a circuit diagram of the second part of an air-source heat pump compressor driver according to the present invention;

[0022] Figure 3This is the circuit diagram of the third part of the air source heat pump compressor driver of this utility model. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] like Figure 1 and Figure 3 As shown, an air source heat pump compressor driver includes a control circuit, which includes:

[0025] Two microcontrollers, including a communication chip;

[0026] The power supply circuit, including a step-down chip, is mainly used to output 15V, 12V, 5V and 3.3V DC voltages, with the 12V DC voltage being directly input to the relay;

[0027] The IPM module includes a temperature acquisition circuit and an overload protection circuit;

[0028] Storage circuits, including storage chips;

[0029] PFC module, including PFC voltage detection and PFC overload protection;

[0030] Electronic expansion valve circuit, used to regulate refrigerant flow;

[0031] The DC inverter fan control circuit is used to control the fan speed to ensure that the system maintains optimal working efficiency under different loads.

[0032] This embodiment provides an air source heat pump compressor controller, which includes a protection circuit, a drive circuit, and a storage circuit. During startup, 220V AC mains power is connected to the circuit, passing through a transformer and rectifier bridge before entering a step-down chip. The step-down chip processes the voltage to output 15V, 12V, 8V, 5V, and 3.3V DC voltages, ensuring normal power supply to all components. A power factor correction (PFC) module improves power efficiency and prevents system overload through voltage detection and overload protection. An IPM module drives the motor, adjusting its speed according to system requirements while monitoring temperature and providing overload protection to ensure safe motor operation. Nine relays control the start and stop of the air conditioning system, fan, compressor, and other equipment, achieving equipment protection and safety control. A sensor input module monitors environmental parameters in real time, such as temperature, humidity, and liquid level. The microcontroller receives feedback information from the flow rate of the refrigerant or gas, enabling precise control. The electronic expansion valve controls the refrigerant flow to regulate the heat exchange efficiency of the refrigeration system. This circuit controls three expansion valves to regulate the refrigerant flow, ensuring efficient operation under different working conditions. An isolated communication circuit provides protection and ensures safe communication, while the 485 communication interface supports remote device monitoring and control. The storage circuit saves operating parameters and historical data. Through microcontroller control, the various modules work closely together to automatically adjust motor speed and power, enabling faster and more precise temperature control. Variable frequency technology automatically adjusts the compressor's power supply frequency based on ambient temperature, allowing the room to quickly reach the specified temperature, achieving comfortable temperature control and rapid energy savings.

[0033] In a further embodiment of this invention, the power supply circuit further includes a transformer and a rectifier bridge, which are used to supply mains power to the step-down chip.

[0034] In this embodiment, the relay connects or disconnects specific electrical devices based on sensor input and control commands, thereby controlling the operation of these devices.

[0035] The microcontroller in this embodiment can integrate functions such as speed command decoding, speed feedback calculation, and precise acceleration and deceleration control. Moreover, it can provide overload protection for the entire circuit when it is turned on to avoid damage to components caused by excessive voltage. It has a high degree of integration and good control effect.

[0036] In this embodiment, the two microcontrollers work in coordination to be responsible for frequency conversion control, operation status monitoring, fault detection, etc. The microcontrollers adjust the motor speed, operating mode and implement protection functions based on the data fed back by the sensors.

[0037] In a further embodiment of this invention, the three-way electronic expansion valve circuit is used to regulate the refrigerant flow rate in the heat pump system and control the evaporation temperature and condensation temperature to improve the system's energy efficiency.

[0038] In a further embodiment of this invention, the IPM module and the motor control system work closely together to ensure that the drive unit can operate according to the inverter commands, providing appropriate speed and torque, while ensuring the long-term stability and safety of the equipment through temperature and overload protection.

[0039] In a further embodiment of this invention, the PFC module works with other power management modules to ensure the efficiency, stability and safety of the power supply, and to prevent unstable voltage from affecting other systems.

[0040] In a further embodiment of this invention, the DC inverter fan control circuit controls the air volume by adjusting the speed of the fan motor, thereby optimizing the system's heat dissipation or airflow. The inverter control can improve efficiency and enable the fan to automatically adjust its speed according to the load.

[0041] In a further embodiment of this invention, the temperature acquisition circuit in the IPM module is used to detect the temperature of the IPM module. Once the temperature exceeds the safe range, protection measures are triggered to prevent the IPM module from overheating and being damaged. In addition, the temperature acquisition circuit can also detect temperature changes in a timely manner and provide feedback signals to adjust the power output. The overload protection circuit detects the current to prevent the fan from working under overload and protects the motor and drive module.

[0042] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An air-source heat pump compressor driver, characterized in that, Includes a control circuit, which includes: Two microcontrollers, including a communication chip; The power supply circuit includes a step-down chip for outputting 15V, 12V, 8V, 5V and 3.3V DC voltages, with the 12V DC voltage directly input to the relay; The IPM module includes a temperature acquisition circuit and an overload protection circuit. Storage circuits, including storage chips; PFC module, including PFC voltage detection and PFC overload protection; Electronic expansion valve circuit, used to regulate refrigerant flow.

2. The air source heat pump compressor driver according to claim 1, characterized in that, The power supply circuit also includes a transformer and a rectifier bridge, which are used to supply AC mains power to the step-down chip.

3. The air source heat pump compressor driver according to claim 1, characterized in that, The PFC module works together with the power management module.

4. The air source heat pump compressor driver according to claim 1, characterized in that, The temperature acquisition circuit in the IPM module is used to detect the temperature of the IPM module.

5. The air source heat pump compressor driver according to claim 1, characterized in that, Storage circuits are used to save important system data, operating parameters, and operating status parameters.

6. The air source heat pump compressor driver according to claim 1, characterized in that, The main control microcontroller is responsible for core control and communication with external systems; the auxiliary microcontroller is responsible for processing sensor data and driving modules.

7. The air source heat pump compressor driver according to claim 1, characterized in that, The electronic expansion valve circuit adjusts the refrigerant flow rate based on system operating conditions and sensor input.

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