Deep well water source heat pump control device and system

Abstract

The utility model relates to the technical field of geothermal water pumps, and provides a deep well water source heat pump control device and system, which comprises a master control module, an expansion DI / DO module, a water pump control module, a 4G communication module and an interactive communication module, the expansion DI / DO module is electrically connected with the master control module, the expansion DI / DO module comprises a plurality of DI input ends and a plurality of DO output ends, and the DI input ends are electrically connected with the interactive communication module. And the DI input end and the DO output end are used for connecting a control device and a sensor, so that the main control module receives and controls signals of the control device and the sensor. According to the deep well water source heat pump control device and system, the control devices can be arranged at the positions needing to be installed according to actual requirements, then a plurality of control devices are arranged according to the system requirements, the control devices can achieve different functions and can conduct interactive communication at the same time, the control devices can be produced in a unified mode and do not need to be customized specially, the equipment cost is effectively saved, and the control efficiency is improved. And in the line arrangement process, the wiring length is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal water pumps, and in particular to a deep well water source heat pump control device and system. Background Art

[0002] The heating and cooling system can pump groundwater or other media to the surface through a deep well geothermal water pump, and use the temperature difference underground to achieve heat exchange. In heating mode, the heat energy from the underground is extracted and transferred to the inside of the building for heating. In cooling mode, the heat energy inside the building is transferred to the underground to achieve a cooling effect. Deep well geothermal water pump systems are generally efficient, environmentally friendly, and stable, because the temperature underground is relatively stable and is not affected by seasonal changes and climate. For example, the geothermal deep well near-zero temperature drop heat exchange system with publication number CN108120038A uses a pump and a circulation pipeline to achieve heat exchange and perform cooling or heating regulation.

[0003] The current deep well water source heat pump control system is mainly completed by the system integrator according to the on-site equipment conditions through the customization and development of different control cabinets to complete the overall control of the system. This centralized control requires the control cabinet to obtain a large amount of information from the site, including system process information such as temperature, pressure, heat, flow, frequency, current, etc., equipment information such as valve switch, opening, motor status and fault, and host working status. And generate corresponding control messages based on the information and system goals and send them to the corresponding execution devices.

[0004] This single centralized control cabinet form has high customized installation costs because it cannot be produced uniformly and needs to be set up separately according to actual lines. In addition, it cannot be formed into units and set up near the required connecting devices, which will cause some line connections to be longer, making the centralized control cabinet wiring cost higher. Utility Model Content

[0005] In view of this, the utility model proposes a deep well water source heat pump control device and system, which sets a main control module and enables it to control the water pump, control the control device and expand the connection with the sensor, and realizes the interactive communication of multiple main control modules through the set interactive communication module, so that the control device can be set at the required installation position according to actual needs, and then multiple control devices can be set according to system needs, so that multiple control devices can realize different functions while interactively communicating, and the control devices can be produced in a unified manner without the need for special customization, which effectively saves equipment costs and reduces the wiring length during line layout.

[0006] The technical solution of the utility model is achieved in this way:

[0007] On the one hand, the utility model provides a deep well water source heat pump control device, including a main control module, an extended DI / DO module, a water pump control module, a 4G communication module and an interactive communication module, wherein:

[0008] The extended DI / DO module is electrically connected to the main control module, and the extended DI / DO module includes a plurality of DI input terminals and a plurality of DO output terminals, and the DI input terminals and DO output terminals are used to connect the control device and the sensor, so that the main control module receives and controls the signals of the control device and the sensor;

[0009] The water pump control module is electrically connected to the main control module, and the water pump control module includes a frequency converter connection end, and the frequency converter connection end is used to connect the water pump frequency converter, so that the main control module and the water pump frequency converter can communicate and interact;

[0010] The 4G communication module is electrically connected to the main control module, and is used to enable the main control module to communicate with the cloud server;

[0011] The interactive communication module is electrically connected to the main control module, and the interactive communication module includes an antenna connection end, and the antenna connection end is used to connect a transceiver antenna so that the multiple control devices can communicate through the interactive communication module.

[0012] On the basis of the above technical solution, preferably, the main control module includes a microcontroller U3, a display unit and a key unit, wherein:

[0013] The microcontroller U3 is electrically connected to the extended DI / DO module, the water pump control module, the 4G communication module, and the interactive communication module, and the microcontroller U3 is used to process the collected data and control the device;

[0014] The display unit is electrically connected to the microcontroller U3 and is used to display current configuration information and real-time acquisition data;

[0015] The key unit is electrically connected to the microcontroller U3 and is used to switch the display screen of the display unit and modify the configuration parameters.

[0016] Further preferably, the extended DI / DO module includes four extended DI units, and the four extended DI units are respectively connected to four input terminals of the microcontroller U3. The extended DI units are used to connect the control device and the sensor, and input the received digital signal into the microcontroller U3.

[0017] Further preferably, the extended DI / DO module also includes four extended DO units, which are respectively connected to four output ends of the microcontroller U3. The extended DO units are used to connect the control device and the sensor, and output the control signal of the microcontroller U3 to the control device and the sensor.

[0018] On the basis of the above technical solution, preferably, the interactive communication module includes a wireless communication chip U4 and a surface acoustic filter FL1, the wireless communication chip U4 is electrically connected to the main control module, the wireless communication chip U4 is electrically connected to the surface acoustic filter FL1, and is connected to the transceiver antenna through the surface acoustic filter FL1.

[0019] On the basis of the above technical solution, preferably, the water pump control module includes a communication interface chip U1, a resistor R1, a resistor R2, a resistor R3, a capacitor C1 and a capacitor C3, wherein:

[0020] The communication interface chip U1 includes a first output connection terminal, a first input connection terminal, a second output connection terminal and a second input connection terminal, and the first output connection terminal and the first input connection terminal of the communication interface chip U1 are both electrically connected to the main control module;

[0021] One end of the resistor R1 is grounded, and the other end is electrically connected to the second output connection end of the communication interface chip U1;

[0022] The two ends of the resistor R2 are electrically connected to the second output connection end and the second input connection end of the communication interface chip U1 respectively;

[0023] One end of the resistor R3 is connected to the power supply, and the other end is electrically connected to the second input connection end of the communication interface chip U1;

[0024] One end of the capacitor C1 is grounded, and the other end is electrically connected to the second input connection end of the communication interface chip U1;

[0025] One end of the capacitor C3 is grounded, and the other end is electrically connected to the second output connection end of the communication interface chip U1.

[0026] More preferably, the extended DO unit includes a transistor Q1 and a resistor R6, wherein:

[0027] The B pole of the transistor Q1 is electrically connected to the output terminal of the microcontroller U3, and the E pole of the transistor Q1 is grounded;

[0028] One end of the resistor R6 is electrically connected to the C pole of the transistor Q1 , and the other end is used to connect the control device and the sensor.

[0029] More preferably, the extended DI unit includes an optocoupler U5, a collector end of the optocoupler U5 is electrically connected to an input end of the microcontroller U3, and both positive and negative electrodes of the optocoupler U5 are used to connect a control device and a sensor.

[0030] Further preferably, the microcontroller U3 includes a Lora wireless interface, the wireless communication chip U4 is electrically connected to the Lora wireless interface of the microcontroller U3, and the wireless communication chip U4 is used to expand the Lora wireless interface of the microcontroller U3, so that multiple identical control devices can communicate through the Lora wireless protocol.

[0031] On the other hand, the utility model provides a deep well water source heat pump control system, comprising a plurality of the above-mentioned deep well water source heat pump control devices, wherein the plurality of control devices perform wireless communication via corresponding interactive communication modules.

[0032] The deep well water source heat pump control device and system of the utility model have the following beneficial effects compared with the prior art:

[0033] (1) By setting up a main control module, it can control the water pump, expand the connection between the control device and the sensor, and realize the interactive communication of multiple main control modules through the interactive communication module, so that the control device can be set at the required installation position according to actual needs, and then multiple control devices can be set according to system needs, so that multiple control devices can realize different functions while communicating interactively, and the control devices can be produced uniformly without special customization, which effectively saves equipment costs and reduces the wiring length during line layout;

[0034] (2) An extended DI / DO module is set up to connect it to the microcontroller U3, so that switches, valves and devices of the same type can be directly connected to the microcontroller to realize signal transmission interaction, device on / off, sampling and other controls. At the same time, the multi-channel connection can be set up to allow a single control device to connect multiple devices for multi-channel signal acquisition and device control, avoiding the need to set up a control device for each device, further reducing equipment costs and improving installation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of a deep well water source heat pump control device of the utility model;

[0037] Figure 2 This is the circuit diagram of the main control module of the deep well water source heat pump control device of the utility model;

[0038] Figure 3This is a circuit diagram of an extended DO unit of an extended DI / DO module of a deep well water source heat pump control device of the utility model;

[0039] Figure 4 This is the circuit diagram of the extended DI unit of the extended DI / DO module of the deep well water source heat pump control device of the utility model;

[0040] Figure 5 It is a circuit diagram of a water pump control module of a deep well water source heat pump control device of the utility model;

[0041] Figure 6 This is a circuit diagram of a 4G communication module of a deep well water source heat pump control device of the utility model;

[0042] Figure 7 This is a circuit diagram of an interactive communication module of a deep well water source heat pump control device of the utility model. DETAILED DESCRIPTION

[0043] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] like Figure 1 As shown, the deep well water source heat pump control device of the utility model is a control cabinet unit, which is used to be set in the control cabinet for data acquisition and device control, and includes a main control module 1, an extended DI / DO module 2, a water pump control module 3, a 4G communication module 4 and an interactive communication module 5.

[0045] like Figure 2 As shown, the main control module 1 uses the STM32F1 series microcontroller as the main control CPU. The microcontroller supports up to 6 UART interfaces. The main control module 1 realizes functions such as data processing, data transmission and device control by setting the control program.

[0046] Specifically, the main control module 1 includes a microcontroller U3, a display unit and a button unit. The microcontroller U3 is electrically connected to the extended DI / DO module 2, the water pump control module 3, the 4G communication module 4, and the interactive communication module 5. The microcontroller U3 is used to process collected data and device control. The display unit is electrically connected to the microcontroller U3 for displaying current configuration information and real-time collected data. The button unit is electrically connected to the microcontroller U3 for switching the display screen of the display unit and modifying configuration parameters.

[0047] The microcontroller U3 preferably has a CPU chip of model STM32F103C8Tx, and the microcontroller U3 has a total of 48 pins, among which pin 1, pin 24, pin 36, pin 48 and pin 9 are connected to a +3.3V power supply, and pin 8 is grounded. The display unit preferably has a display chip U2 of model RC16102A, and pin 1 and pin 16 of the display chip U2 are grounded, and pin 2 and pin 15 are connected to a +5V power supply. At the same time, pins 4-14 of the display chip U2 are respectively connected to pins 41-46 and pins 21-28 of the microcontroller U3. The key unit includes four keys SW1-4, and one ends of the four keys SW1-4 are respectively connected to pins 18-pin 20 and pin 39 of the microcontroller U3, and the other ends of the four keys SW1-4 are all connected to the power supply VCC.

[0048] In order to enable the main control module 1 to be directly connected to various switches, valves, and sensors at the installation site, an extended DI / DO module 2 is provided. The extended DI / DO module 2 is electrically connected to the main control module 1. The extended DI / DO module 2 includes multiple DI input terminals and multiple DO output terminals. The DI input terminals and DO output terminals are used to connect control devices and sensors, so that the main control module 1 can receive and control signals from control devices and sensors.

[0049] like Figure 4 As shown, the extended DI / DO module 2 includes four extended DI units, and the four extended DI units are respectively connected to the four input terminals of the microcontroller U3. The extended DI units are used to connect control devices and sensors, and input the received digital signals into the microcontroller U3, wherein the control devices include switches and valves and devices of the same type. Specifically, the four extended DI units are respectively connected to pin 39 and pins 32-34 of the microcontroller U3. By setting up the four extended DI units, the interface of the microcontroller U3 can be expanded, and four switches, valves or sensors can be connected for signal input, thereby transmitting the data to be monitored to the microcontroller U3 for judgment.

[0050] like Figure 3 As shown, correspondingly, the extended DI / DO module 2 also includes four extended DO units, and the four extended DO units are respectively connected to the four output ends of the microcontroller U3. The extended DO units are used to connect the control device and the sensor, and output the control signal of the microcontroller U3 to the control device and the sensor. Specifically, the four extended DO units are respectively connected to pins 10-13 of the microcontroller U3 to be paired with the four extended DI units. The four extended DO units can expand the interface of the microcontroller U3, and output the control signal of the microcontroller U3 to the device connected thereto, so as to realize the on / off, sampling and other controls of the device.

[0051] The water pump control module 3 is electrically connected to the main control module 1, and the water pump control module 3 includes a frequency converter connection end, which is used to connect the water pump frequency converter, so that the main control module 1 and the water pump frequency converter can communicate and interact, and control the power of the water pump by controlling the start and stop and frequency reading and writing of the water pump frequency converter.

[0052] like Figure 5 As shown, the water pump control module 3 mainly includes a communication interface chip U1, which communicates between the RS-485 interface and the RS-422 interface to realize the communication and control between the microcontroller U3 and the water pump inverter. The communication interface chip U1 is preferably a low-power transceiver of model MAX485E. In addition, in this embodiment, since there are two water pumps to be controlled at the location where the control device is set in the deep water well, the number of water pump control modules 3 is set to two, and they are respectively connected to pins 3-4 and pins 37-38 of the microcontroller U3.

[0053] like Figure 6 As shown, the 4G communication module 4 is electrically connected to the main control module 1, and is used to enable the main control module 1 to communicate with the cloud server. Specifically, the 4G communication module 4 includes a 4G communication chip U7, a resistor R10, a capacitor C8, a capacitor C9 and an antenna AE1. The model of the 4G communication chip U7 is M95, which has 39 pins, wherein pins 19, 32 and 33 are connected to the power supply VDD, pin 35 is grounded, pin 21 and pin 22 are respectively connected to pin 30 and pin 31 of the microcontroller U3, and the two ends of the resistor R10 are respectively connected to pin 39 of the 4G communication chip U7 and the antenna AE1, one end of the capacitor C8 is connected to one end of the resistor R10, and the other end is grounded, one end of the capacitor C9 is connected to the other end of the resistor R10, and the other end of the capacitor C9 is grounded, so that the microcontroller U3 can be extended through the 4G communication chip U7 to perform 4G communication, and then communicate and interact with the cloud server.

[0054] like Figure 7 As shown, the interactive communication module 5 is electrically connected to the main control module 1 , and the interactive communication module 5 includes an antenna connection end, and the antenna connection end is used to connect a transceiver antenna so that the multiple control devices can communicate through the interactive communication module 5 .

[0055] Specifically, the interactive communication module 5 includes a wireless communication chip U4 and an acoustic surface filter FL1. The wireless communication chip U4 is electrically connected to the main control module 1. The wireless communication chip U4 is electrically connected to the acoustic surface filter FL1 and is connected to the transceiver antenna through the acoustic surface filter FL1. The Lora wireless interface of the microcontroller U3 is expanded by the wireless communication chip U4, so that multiple identical control devices can communicate through the Lora wireless protocol to realize information interaction. The model of the wireless communication chip U4 is SX1272, and its pins 24 and 25 are connected to the acoustic surface filter FL1, and pins 17-18 are respectively connected to pins 5-6 and pin 2 of the microcontroller U3.

[0056] like Figure 5 As shown, in this embodiment, in addition to the communication interface chip U1, the water pump control module 3 also has a resistor R1, a resistor R2, a resistor R3, a capacitor C1 and a capacitor C3. The communication interface chip U1 includes a first output connection end, a first input connection end, a second output connection end and a second input connection end. The first output connection end and the first input connection end of the communication interface chip U1 are both electrically connected to the main control module 1. One end of the resistor R1 is grounded, and the other end is electrically connected to the second output connection end of the communication interface chip U1. The two ends of the resistor R2 are electrically connected to the second output connection end and the second input connection end of the communication interface chip U1 respectively. One end of the resistor R3 is connected to the power supply, and the other end is electrically connected to the second input connection end of the communication interface chip U1. One end of the capacitor C1 is grounded, and the other end is electrically connected to the second input connection end of the communication interface chip U1. One end of the capacitor C3 is grounded, and the other end is electrically connected to the second output connection end of the communication interface chip U1.

[0057] Among them, the communication interface chip U1 has six pins, among which pin 1 and pin 4 are respectively connected to pin 3-4 or pin 37-38 of the microcontroller U3. When the water pump control module 3 is set to two, the two communication interface chips U1 will be respectively connected to pin 3-4 and pin 37-38 of the microcontroller U3. The first output connection terminal, the first input connection terminal, the second output connection terminal and the second input connection terminal correspond to pin 4, pin 1, pin 6 and pin 7 of the communication interface chip U1 respectively. Pin 5 of the communication interface chip U1 is grounded, and pin 8 is connected to the power supply +5VD. The water pump control module 3 is formed by the communication interface chip U1, resistor R1, resistor R2, resistor R3, capacitor C1 and capacitor C3, and pin 6 and pin 7 of the communication interface chip U1 are connected to the water pump inverter for frequency control and start and stop.

[0058] like Figure 3-4As shown, in this embodiment, the extended DO unit includes a transistor Q1 and a resistor R6, the B pole of the transistor Q1 is electrically connected to the output end of the microcontroller U3, the E pole of the transistor Q1 is grounded, one end of the resistor R6 is electrically connected to the C pole of the transistor Q1, and the other end is used to connect the control device and the sensor.

[0059] In addition, the extended DI unit includes an optocoupler U5, the collector end of the optocoupler U5 is electrically connected to the input end of the microcontroller U3, the positive and negative poles of the optocoupler U5 are used to connect the control device and the sensor, the preferred model of the optocoupler U5 is TLP2745, and the optocoupler U5 has six pins, pin 5 of which is the collector end, pin 1 and pin 3 are the negative pole and the positive pole respectively, and the negative pole and the positive pole are used to receive the positive and negative signals of the device.

[0060] The deep well water source heat pump control system of the utility model includes multiple deep well water source heat pump control devices as mentioned above. Multiple control devices communicate wirelessly through corresponding interactive communication modules 5. In an actual application scenario, several control devices can be arranged in the same control cabinet according to needs, or some of them can be arranged in different control cabinets.

[0061] In a specific embodiment, four control devices are provided, one of which serves as a master module, and the other three serve as slave modules. The control device configured as the master module communicates with other slave modules to complete the coordinated action between devices. The other three slave modules are respectively used for valve control, water pump control and data acquisition to realize different control modes, such as water pump temperature difference control mode, water pump pressure difference control mode, valve temperature control mode and valve slave mode, etc. The installation positions of the master module and the slave module can be selected according to actual needs to reduce the wiring length. At the same time, the structural consistency of the control device enables it to be uniformly produced to reduce production costs.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep well water source heat pump control device, characterized in that: It comprises a main control module (1), an extended DI / DO module (2), a water pump control module (3), a 4G communication module (4) and an interactive communication module (5), wherein: The extended DI / DO module (2) is electrically connected to the main control module (1), the extended DI / DO module (2) comprising a plurality of DI input terminals and a plurality of DO output terminals, the DI input terminals and the DO output terminals being used to connect control devices and sensors, so that the main control module (1) receives and controls signals from the control devices and sensors; The water pump control module (3) is electrically connected to the main control module (1), and the water pump control module (3) comprises a frequency converter connection end, wherein the frequency converter connection end is used to connect to the water pump frequency converter, so that the main control module (1) and the water pump frequency converter can communicate and interact; The 4G communication module (4) is electrically connected to the main control module (1) and is used to enable the main control module (1) to communicate with the cloud server; The interactive communication module (5) is electrically connected to the main control module (1), and the interactive communication module (5) comprises an antenna connection end, wherein the antenna connection end is used to connect a transceiver antenna so that the plurality of control devices communicate via the interactive communication module (5).

2. The deep well water source heat pump control device according to claim 1, characterized in that: The main control module (1) comprises a microcontroller U3, a display unit and a key unit, wherein: The microcontroller U3 is electrically connected to the extended DI / DO module (2), the water pump control module (3), the 4G communication module (4), and the interactive communication module (5), and the microcontroller U3 is used for processing collected data and controlling devices; The display unit is electrically connected to the microcontroller U3 and is used to display current configuration information and real-time acquisition data; The key unit is electrically connected to the microcontroller U3 and is used to switch the display screen of the display unit and modify the configuration parameters.

3. The deep well water source heat pump control device according to claim 2, characterized in that: The extended DI / DO module (2) comprises four extended DI units, which are respectively connected to four input terminals of the microcontroller U3. The extended DI units are used to connect the control device and the sensor, and input the received digital signal into the microcontroller U3.

4. The deep well water source heat pump control device according to claim 3, characterized in that: The extended DI / DO module (2) further comprises four extended DO units, which are respectively connected to four output terminals of the microcontroller U3. The extended DO units are used to connect the control device and the sensor, and output the control signal of the microcontroller U3 to the control device and the sensor.

5. The deep well water source heat pump control device according to claim 2, characterized in that: The interactive communication module (5) comprises a wireless communication chip U4 and a surface acoustic wave filter FL1. The wireless communication chip U4 is electrically connected to the main control module (1). The wireless communication chip U4 is electrically connected to the surface acoustic wave filter FL1 and is connected to a transceiver antenna via the surface acoustic wave filter FL1.

6. The deep well water source heat pump control device according to claim 1, characterized in that: The water pump control module (3) comprises a communication interface chip U1, a resistor R1, a resistor R2, a resistor R3, a capacitor C1 and a capacitor C3, wherein: The communication interface chip U1 comprises a first output connection end, a first input connection end, a second output connection end and a second input connection end, and the first output connection end and the first input connection end of the communication interface chip U1 are both electrically connected to the main control module (1); One end of the resistor R1 is grounded, and the other end is electrically connected to the second output connection end of the communication interface chip U1; The two ends of the resistor R2 are electrically connected to the second output connection end and the second input connection end of the communication interface chip U1 respectively; One end of the resistor R3 is connected to the power supply, and the other end is electrically connected to the second input connection end of the communication interface chip U1; One end of the capacitor C1 is grounded, and the other end is electrically connected to the second input connection end of the communication interface chip U1; One end of the capacitor C3 is grounded, and the other end is electrically connected to the second output connection end of the communication interface chip U1.

7. The deep well water source heat pump control device according to claim 4, characterized in that: The extended DO unit includes a transistor Q1 and a resistor R6, wherein: The B pole of the transistor Q1 is electrically connected to the output terminal of the microcontroller U3, and the E pole of the transistor Q1 is grounded; One end of the resistor R6 is electrically connected to the C pole of the transistor Q1 , and the other end is used to connect the control device and the sensor.

8. The deep well water source heat pump control device according to claim 3, characterized in that: The extended DI unit includes an optical coupler U5, a collector end of the optical coupler U5 is electrically connected to an input end of the microcontroller U3, and both positive and negative electrodes of the optical coupler U5 are used to connect a control device and a sensor.

9. The deep well water source heat pump control device according to claim 5, characterized in that: The microcontroller U3 includes a Lora wireless interface, and the wireless communication chip U4 is electrically connected to the Lora wireless interface of the microcontroller U3. The wireless communication chip U4 is used to expand the Lora wireless interface of the microcontroller U3 so that multiple identical control devices can communicate through the Lora wireless protocol.

10. A deep well water source heat pump control system, characterized in that: It comprises a plurality of deep well water source heat pump control devices according to any one of claims 1 to 9, wherein the plurality of control devices perform wireless communication via corresponding interactive communication modules (5).

Images