Ground source heat pump system and control method thereof

Abstract

The invention discloses a ground source heat pump system and a control method thereof.The ground source heat pump system comprises a control unit, an indoor monitoring unit, a ground source heat exchange system and an indoor heating air conditioner terminal system, and the indoor monitoring unit is electrically connected with the control unit; the indoor monitoring unit is used for monitoring the indoor temperature, the ventilation condition, the personnel flow quantity, the operation condition of electrical equipment and the indoor structure and transmitting the monitored data to the control unit. The ground source heat exchange system and the indoor heating air conditioner terminal system are both electrically connected with the control unit, and the control unit controls the ground source heat exchange system and the indoor heating air conditioner terminal system to transfer heat / cold energy according to data transmitted by the indoor monitoring unit. Multiple repeated operation of the ground source heat pump system is avoided, energy consumption is reduced, and meanwhile the comfort of indoor users is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ground source heat pumps, and particularly to a ground source heat pump system and a control method thereof. Background Art

[0002] A ground source heat pump system refers to a heating and air-conditioning system that uses rock and soil, groundwater or surface water as a low-temperature heat source and consists of a water source heat pump unit, a geothermal energy exchange system, and a building interior system.

[0003] The existing ground source heat pump system includes ground buried pipes, heat exchangers, ground source heat pump units, water pumps, phase change heat accumulators, hot water heat pumps, regulating valves, and water-using terminals. This system uses soil as a heat and cold source to adjust the indoor environment, and at the same time balances the heat / cold released to the ground in summer and the heat / cold absorbed from the ground in winter, avoiding the heat accumulation problem caused by the long-term operation of the ground source heat pump system. In the summer working condition, part of the heat / cold is discharged into the ground through the ground buried pipes, and part of the heat / cold is stored through the phase change heat storage system. In the transitional season and winter, the cold fluid exchanges heat with the phase change heat accumulator and is used as the heat source of the hot water heat pump or directly used as domestic water. This system can operate efficiently for a long time without destroying the soil heat balance.

[0004] However, in the process of achieving the balance of heating and cooling loads through the above technical solutions, due to the floating of heating and cooling loads in the building, the method of transporting fixed heat / cold / heat quantity will cause the ground source heat pump system to run back and forth multiple times, resulting in increased energy consumption. Summary of the Invention

[0005] The main object of the present invention is to propose a ground source heat pump system and a control method thereof, aiming to solve the problem that the method of transporting fixed heat / cold / heat quantity in the existing ground source heat pump system will cause the ground source heat pump system to run back and forth multiple times, resulting in increased energy consumption.

[0006] To achieve the above object, the present invention provides a ground source heat pump system including a control unit, an indoor monitoring unit, a ground source heat exchange system, and an indoor heating and air-conditioning terminal system. The indoor monitoring unit is electrically connected to the control unit. The indoor monitoring unit is used to monitor the indoor temperature, ventilation condition, number of people flowing, operation of electrical equipment, and indoor structure, and transmit the monitored data to the control unit. Both the ground source heat exchange system and the indoor heating and air-conditioning terminal system are electrically connected to the control unit. The control unit controls the ground source heat exchange system and the indoor heating and air-conditioning terminal system to transfer heat / cold according to the data transmitted by the indoor monitoring unit.

[0007] Optionally, the indoor monitoring unit includes at least one first image collector and at least one first temperature collector.

[0008] Optionally, it further includes an outdoor monitoring unit, which is electrically connected to the control unit. The outdoor monitoring unit is used to monitor the outdoor temperature, the outdoor heat radiation condition, the number of external walls of the building to be temperature-controlled, and the area covered by shadows, and transmit the monitored data to the control unit. The control unit controls the heat / cold transfer of the ground source heat exchange system and the indoor heating and air-conditioning terminal system according to the data transmitted by the indoor monitoring unit and the outdoor monitoring unit.

[0009] Optionally, the outdoor monitoring unit includes at least one second image collector and at least one second temperature collector.

[0010] Optionally, the number of the at least one second image collector and the at least one second temperature collector is both two. The two second image collectors and the two second temperature collectors are respectively arranged oppositely and are both clamped on the outside of the building to be temperature-controlled.

[0011] Optionally, the ground source heat exchange system includes a buried pipe, a ground source heat pump unit, and a heat treatment unit. A heat exchange medium for exchanging heat with the soil flows inside the buried pipe. The ground source heat pump unit is connected to the buried pipe and the indoor heating and air-conditioning terminal system, and the ground source heat pump unit is used to transport the heat / cold in the heat exchange medium to the indoor heating and air-conditioning terminal system. The heat treatment unit is connected to the ground source heat pump unit and is used to treat the remaining heat / cold of the ground source heat pump unit.

[0012] Optionally, it further includes a soil monitoring unit, which is electrically connected to the control unit and is used to monitor the temperature inside the buried pipe and the temperature of the soil near the buried pipe, and transmit the monitored data to the control unit. The control unit controls the heat / cold release of the heat treatment unit according to the data transmitted by the soil monitoring unit.

[0013] Optionally, the soil monitoring unit includes a buried pipe temperature collector and a soil temperature collector.

[0014] Optionally, the ground source heat pump unit is connected to the buried pipe and the indoor heating and air-conditioning terminal system through an input pipe and an output pipe for the heat exchange medium to flow. Pressure sensors and flow sensors are arranged on both the input pipe and the output pipe, and the pressure sensors and the flow sensors are electrically connected to the control unit.

[0015] The present invention provides a control method for a ground source heat pump system. Based on the ground source heat pump system described above, it is characterized in that the control method of the ground source heat pump system includes the following steps:

[0016] Obtain indoor monitoring data and outdoor monitoring data;

[0017] Query the mapping relationship according to the indoor monitoring data and the outdoor monitoring data to determine the numerical values of the heat / cold quantity transferred between the ground source heat exchange system and the indoor heating and air conditioning terminal system;

[0018] Control the ground source heat exchange system and the indoor heating and air conditioning terminal system to release heat / cold quantity according to the numerical values of the heat / cold quantity transferred between the ground source heat exchange system and the indoor heating and air conditioning terminal system.

[0019] In the technical solution of the present invention, the indoor monitoring unit is added to monitor the indoor temperature, ventilation condition, number of people flowing, operation of electrical equipment, and indoor structure, and at the same time, these data are transmitted to the control unit. According to the indoor monitoring data, the control unit can adjust the heat / cold quantity transferred by the ground source heat exchange system and the indoor heating and air conditioning terminal system. The present invention corrects the temperature to be adjusted, avoids repeated operation of the ground source heat pump system, reduces energy consumption, and improves the comfort of indoor users. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0021] Figure 1 It is an assembly drawing of the ground source heat pump system provided by an embodiment of the present invention;

[0022] Figure 2 For Figure 1 a partial structural schematic diagram of the ground source heat pump system in

[0023] Figure 3 It is a structural schematic diagram of the buried pipe provided by an embodiment of the present invention;

[0024] Figure 4 It is a flowchart of the control method of the ground source heat pump system provided by an embodiment of the present invention.

[0025] The reference numeral descriptions of the embodiments provided by the present invention are as follows:

[0026]

[0027]

[0028] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the drawings. Detailed Embodiments

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The ground source heat pump system refers to a heating and air conditioning system that uses rock and soil, groundwater or surface water as low-temperature heat sources and is composed of a water source heat pump unit, a geothermal energy exchange system, and a system in a building. The existing ground source heat pump system includes underground pipes, heat exchangers, ground source heat pump units, water pumps, phase change heat storage devices, hot water heat pumps, regulating valves, and water terminals. The system uses soil as a cold and hot source to adjust the indoor environment, while balancing the heat / cold released to the ground in summer and the heat / cold absorbed from the ground in winter, avoiding the problem of heat accumulation caused by the long-term operation of the ground source heat pump system. In summer conditions, part of the heat / cold is discharged into the ground through underground pipes, and part of the heat / cold is stored through the phase change heat storage system. In transitional seasons and winter, the cold fluid exchanges heat with the phase change heat storage device, serving as a heat source for the hot water heat pump or directly used as domestic water. This system can operate efficiently for a long time without destroying the thermal balance of the soil. However, in the process of achieving heat and cold load balance through the above technical solution, due to the fluctuation of heat and cold loads in the building, the method of delivering fixed cold / hot / cold capacity will cause the ground source heat pump system to run back and forth multiple times, increasing energy consumption.

[0033] In view of this, the present invention provides a ground source heat pump system and its control method. The present invention corrects the required regulated temperature, avoids repeated operation of the ground source heat pump system, reduces energy consumption, and improves the comfort of indoor users at the same time. Figure 1 It is an assembly drawing of the ground source heat pump system provided by an embodiment of the present invention; Figure 2 For Figure 1 A partial structural schematic diagram of the ground source heat pump system in Figure 3 It is a structural schematic diagram of the buried pipe provided by an embodiment of the present invention; Figure 4 It is a flowchart of the control method of the ground source heat pump system provided by an embodiment of the present invention.

[0034] The present invention provides a ground source heat pump system 100, including a control unit, an indoor monitoring unit 2, a ground source heat exchange system 3, and an indoor heating and air conditioning terminal system 4. The indoor monitoring unit 2 is electrically connected to the control unit. The indoor monitoring unit 2 is used to monitor the indoor temperature, ventilation condition, number of people flowing, operation of electrical equipment, and indoor structure, and transmit the monitored data to the control unit. The ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4 are both electrically connected to the control unit. The control unit controls the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4 to transfer heat / cold according to the data transmitted by the indoor monitoring unit 2.

[0035] In the above technical solution, the specific structure of the indoor monitoring unit 2 is not limited, and it is not limited to being a single device. The indoor monitoring unit 2 can be composed of a variety of devices to enable it to monitor a variety of data. For example, the device for monitoring indoor temperature can be a temperature sensor, the device for monitoring the number of people flowing and the operation of electrical equipment can be a heat monitoring device, and the monitoring of indoor structure and ventilation condition can be manually transmitted specific data to the control unit, etc. The main function of the ground source heat exchange system 3 is to use the rock and soil body, groundwater or surface water as a low-temperature heat source and transfer the heat to the indoor heating and air conditioning terminal system 4. The indoor heating and air conditioning terminal system 4 then transports the transferred heat into the room to adjust the temperature of the room. Among them, the specific equipment included in the indoor heating and air conditioning terminal system 4 is not limited. For example, it can be a fan coil unit, and a general fan coil unit includes a fan, a coil, and a cold and heat source.

[0036] In the technical solution of the present invention, the indoor monitoring unit 2 is added, which is used to monitor the indoor temperature, ventilation condition, number of people flowing, operation condition of electrical equipment, and indoor structure, and at the same time transmit these data to the control unit. According to the indoor monitoring data, the control unit can adjust the heat / cold quantity transferred by the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4. The present invention corrects the required adjusted temperature, avoids repeated operation of the ground source heat pump system 100, reduces energy consumption, and improves the comfort of indoor users at the same time.

[0037] Further, the indoor monitoring unit 2 includes at least one first image collector 21 and at least one first temperature collector 22. Understandably, when there is only one room, one first image collector 21 and one first temperature collector 22 can be configured in the room. When the area of this room is relatively large, in order to comprehensively monitor, several first image collectors 21 and first temperature collectors 22 can also be placed. When there are multiple rooms and each room needs temperature adjustment, a first image collector 21 and a first temperature collector 22 are configured in each room, and the number of the first image collectors 21 and the first temperature collectors 22 in each room is determined according to the actual situation. Configuring the first image collector 21 and the first temperature collector 22 facilitates data monitoring of the indoor environment and transmits the monitored data to the control unit.

[0038] Further, an outdoor monitoring unit 5 is also included, which is electrically connected to the control unit. The outdoor monitoring unit 5 is used to monitor the outdoor temperature, outdoor heat radiation condition, number of exterior walls of the building to be temperature-adjusted, and area covered by shadows, and transmit the monitored data to the control unit; the control unit controls the heat / cold quantity transferred by the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4 according to the data transmitted by the indoor monitoring unit 2 and the outdoor monitoring unit 5.

[0039] In the above technical solution, the outdoor temperature and other conditions will also affect the indoor temperature condition, so it is also necessary to monitor the outdoor data. Similarly, the present application does not limit the specific composition of the outdoor monitoring unit 5, and it can also be composed of multiple monitoring devices. For example, the temperature can be monitored by a temperature sensor, the radiation condition can be monitored by a heat monitoring device, and the number of exterior walls of the building and the area covered by shadows can be manually uploaded to the control unit. After the control unit collects these data, it comprehensively judges the indoor temperature condition based on the indoor monitored data, and judges the heat / cold quantity transferred by the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4, and conveys this instruction to the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4.

[0040] Specifically, the outdoor monitoring unit 5 includes at least one second image collector and at least one second temperature collector. In the present invention, the number of the second image collector and the second temperature collector can be adjusted according to specific situations. When the volume of the building is large, several more second image collectors and second temperature collectors can be set up to more comprehensively monitor the outdoor situation. In some embodiments, the number of both the at least one second image collector and the at least one second temperature collector is two; the two second image collectors and the two second temperature collectors are respectively arranged oppositely and are both clamped on the outer side of the temperature-controlled building. By adopting this layout method, not only the number of collectors is saved, but also the outdoor data can be comprehensively monitored.

[0041] In the technical solution of the present invention, the ground source heat exchange system 3 includes a buried pipe 31, a ground source heat pump unit 32, and a heat treatment unit 33. A heat exchange medium for exchanging heat with the soil flows inside the buried pipe 31; the ground source heat pump unit 32 is connected to the buried pipe 31 and the indoor heating and air conditioning terminal system 4, and the ground source heat pump unit 32 is used to transfer the heat / cold in the heat exchange medium to the indoor heating and air conditioning terminal system 4; the heat treatment unit 33 is connected to the ground source heat pump unit 32 and is used to process the remaining heat / cold of the ground source heat pump unit 32. The structure of the buried pipe 31 is not limited. One of the structures is as Figure 3 shown as the U-shaped buried pipe 31. The main function of the buried pipe 31 is to enable the heat exchange medium to exchange heat with the soil, so that the heat / cold enters the heat exchange medium, and then the heat exchange medium transfers this energy to the ground source heat pump unit 32, and the ground source heat pump unit 32 then transfers this heat / cold to the indoor heating and air conditioning terminal system 4, that is, the heat transfer is completed. Among them, when the total heat / cold in the ground source heat pump unit 32 is greater than the heat / cold required by the indoor heating and air conditioning terminal system 4, some heat will be left over. The heat treatment unit 33 collects this part of heat / cold for use. For example, it can be transferred to the ground source heat pump unit 32 as supplementary heat / cold, or this part of heat / cold can be diffused into the soil, etc.

[0042] Furthermore, it further includes a soil monitoring unit 6, which is electrically connected to the control unit and is used to monitor the temperature inside the buried pipe 31 and the temperature of the soil near the buried pipe 31, and transmit the monitored data to the control unit; the control unit controls the heat treatment unit 33 to release heat / cold according to the data transmitted by the soil monitoring unit 6, for comprehensively judging the heat diffusion ability of the soil. The heat treatment unit 33 performs heat treatment according to the heat diffusion ability of the soil, which can improve the soil heat balance and reduce heat accumulation. In some embodiments, the soil monitoring unit 6 includes a buried pipe temperature collector 61 and a soil temperature collector 62.

[0043] In the technical solution of the present invention, the ground source heat pump unit 32, the ground buried pipe 31, and the indoor heating and air conditioning terminal system 4 are all connected through an input pipe 7 and an output pipe 8 for the heat exchange medium to flow; pressure sensors and flow sensors are provided on both the input pipe 7 and the output pipe 8, and the pressure sensors and the flow sensors are electrically connected to the control unit. By monitoring the pressure and flow of the input pipe 7 and the output pipe 8, the power of the ground source heat pump system 100 can be monitored, and the pressure and flow of the input pipe 7 and the output pipe 8, as well as the power of the ground source heat pump system 100, can be adjusted according to the corrected temperature to be adjusted; thus, the cold and heat load balancing process becomes more intelligent, and at the same time, the operation of the ground source heat pump system 100 can be better matched with the cold and heat load, achieving efficient and precise balancing.

[0044] As Figure 4 shown in the flowchart of, the present invention provides a control method for a ground source heat pump system 100. Based on the ground source heat pump system 100, the control method of the ground source heat pump system 100 includes the following steps:

[0045] S10. Obtain indoor monitoring data and outdoor monitoring data;

[0046] Specifically, the indoor monitoring data includes the indoor temperature, ventilation condition, number of people flowing, operation status of electrical equipment, and indoor structure, and the outdoor monitoring data includes the outdoor temperature, outdoor heat radiation condition, number of outer walls of the building to be temperature-controlled, and area covered by shadows;

[0047] S20. Query the mapping relationship according to the indoor monitoring data and the outdoor monitoring data to determine the values of the heat / cold quantity transferred by the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4;

[0048] Specifically, a data model is established in the control unit, and the corresponding mapping relationship can be found according to the indoor monitoring data and the outdoor monitoring data, that is, the corresponding values of the heat / cold quantity that the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4 need to transfer can be found;

[0049] S30. Control the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4 to release heat / cold quantity according to the values of the heat / cold quantity transferred by the ground source heat exchange system 3 and the indoor heating and air conditioning terminal system 4.

[0050] After the temperature adjustment and correction of the present invention, the control unit controls the ground source heat pump system 100 to reduce the number of temperature regulation times, which can not only quickly reach the user's preset temperature and meet the heating and cooling loads of each room, but also accurately control the afterheat treatment of the heat treatment unit 33, making the heat storage amount and heat extraction amount of the buried pipe 31 more balanced.

[0051] The control method of the ground source heat pump system 100 has all the technical solutions of the ground source heat pump system 100 described above, so it has the technical effects brought by all the above technical features, which will not be elaborated here one by one.

[0052] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments and drawings. It should be understood that the following embodiments are only used to explain the present invention and are not used to limit the present invention.

[0053] Embodiment 1

[0054] The indoor heating and air-conditioning terminal system 4 includes a fan coil unit fixedly connected inside a building. The fan coil unit is composed of a fan, a coil, and a cold and heat source. When there are three rooms indoors, namely rooms A, B, and C, fan coil units are fixedly connected in each of the rooms A, B, and C. The fan coil units are all provided with input pipes 7 and output pipes 8 for the heat exchange medium to flow, and the input pipes 7 and output pipes 8 are communicated with the ground source heat pump unit 32. Throttle valves are connected to the input pipes 7 and output pipes 8 connected to each fan coil unit for regulating the heat / cold quantity conveyed by the corresponding fan coil unit. Additionally, throttle valves are connected to the input pipes 7 and output pipes 8 at the connection with the ground source heat pump unit 32 for controlling the heat / cold quantity conveyed by all the fan coil units. Each fan coil unit is signal-connected to a controller 1. The controller 1 is used to receive the preset temperature set by the user. A first temperature collector 22 and a first image collector 21 are fixedly connected beside the fan coil unit. The first image collector 21 is used to collect the image inside the building where the fan coil unit is located, and the first temperature collector 22 is used to collect the temperature inside the building where the fan coil unit is located. Specifically, the content collected by the first image collector 21 includes the structure inside the building, the ventilation condition inside the building, the personnel flow condition inside the building, and the operation condition of the electrical equipment inside the building. The structure inside the building includes the building wall structure (whether there is a ventilation space) and the area inside the building, etc. The ventilation condition inside the building includes the number of doors and windows inside the building and whether the doors and windows are in a ventilated state. The personnel flow condition inside the building includes the number of people inside the building and whether there is a situation where people enter or leave the building. The operation condition of the electrical equipment inside the building includes the number of household electrical appliances and whether they are in an operating state. Combined with the attached Figure 1As shown, Room A has one door and one window, and no other electrical equipment is operating, so there is no energy consumption caused by other electrical equipment; Room B has only two doors, and no other electrical equipment is operating, so there is no energy consumption caused by other electrical equipment; Room C has one door and one window, and no other electrical equipment is operating, so there is no energy consumption caused by other electrical equipment. However, the area of Room C is larger than that of Room A and Room B.

[0055] In some embodiments, the buried pipe 31 is a U-shaped buried pipe 31. The soil monitoring unit 6 includes a soil temperature collector 62 for monitoring the soil temperature around the U-shaped buried pipe 31. The U-shaped buried pipe 31 is connected to the ground source heat pump unit 32 through the input pipe 7 and the output pipe 8, and water pumps are connected to both the input pipe 7 and the output pipe 8.

[0056] The ground source heat exchange system 3 includes a ground source heat pump unit 32, a buried pipe 31, and a heat treatment unit 33. The control unit is signal-connected to the controller 1, the indoor monitoring unit 2, the ground source heat pump unit 32, the outdoor monitoring unit 5, and the heat treatment unit 33. The outdoor monitoring unit 5 includes a second image collector and a second temperature collector fixedly connected to the outside of the building. The second image collector and the second temperature collector are respectively used for collecting the image outside the building and the temperature. The heat treatment unit 33 can adopt a heat recovery device for heat recovery and utilize the recovered heat through the heat recovery device. Exemplarily, the installation quantity and position of the outdoor monitoring unit 5 are adjusted according to the building to ensure that the building can be covered. Figure 1 As shown, in this embodiment, two second image collectors and two second temperature collectors are fixedly arranged on the diagonal of the building. The content collected by the second image collector includes the external structure of the building and the heat radiation situation around the building. The external structure of the building includes the number of exterior walls of the building, and the heat radiation situation around the building includes whether the exterior walls of the rooms are in sunlight or shadow.

[0057] As shown in the Figure 1 As shown, the number of exterior walls of Room A and Room B is two, and the number of exterior walls of Room C is three. The control unit is used to calculate the temperature to be adjusted according to the preset temperature in the building where the fan coil unit is located and the temperature in the building, correct the temperature to be adjusted according to the indoor monitoring data and the outdoor monitoring data, then control the operation of the ground source heat pump system 100, and at the same time control the heat treatment unit 33 to process the waste heat.

[0058] For the three rooms in this embodiment, during the process of correcting the temperature to be adjusted, with the same personnel flow situation, the correction amount of the temperature to be adjusted in Room C is the largest, followed by Room A, and the least is Room C. After correcting the temperature to be adjusted, the control unit controls the ground source heat pump system 100 to reduce the number of temperature regulation times, which can not only quickly reach the user's preset temperature, meet the heating and cooling loads of each room, but also accurately control the heat treatment unit 33 for heat treatment, making the heat storage amount and heat extraction amount of the buried pipe 31 more balanced.

[0059] Secondly, in order to continuously optimize the balance efficiency of the heating and cooling loads of the device, the control unit records and controls the images inside the building, the images outside the building, and the outside temperature of the building when the ground source heat pump system 100 is running, and compares the changes in the images inside the building, the images outside the building, and the outside temperature before and after the next control of the operation of the ground source heat pump system 100, and corrects the temperature to be adjusted according to the changes in the images inside the building, the images outside the building, and the outside temperature.

[0060] Embodiment 2

[0061] The difference from Embodiment 1 is that the soil monitoring unit 6 includes a buried pipe temperature collector 61 and a soil temperature collector 62. The buried pipe temperature collector 61 collects the temperature inside the ground pipe, and the soil temperature collector 62 collects the temperature of the soil heat diffusion area near the buried pipe 31. The control unit estimates the heat diffusion ability of the soil based on the temperature of the U-shaped buried pipe 31 and the temperature of the soil heat diffusion area, and controls the operation of the heat treatment unit 33 according to the heat diffusion ability of the soil.

[0062] The above heat diffusion ability of the soil is mainly based on comparing the water temperature at the outlet of the U-shaped buried pipe 31 in the same period of previous years, and judging the heat diffusion ability of the soil according to the water temperature change; secondly, combining the temperature of the U-shaped buried pipe 31 and the temperature of the soil heat diffusion area to estimate the heat diffusion ability of the soil, so as to comprehensively judge the heat diffusion ability of the soil; the heat treatment unit 33 performs heat treatment according to the heat diffusion ability of the soil, which can improve the soil heat balance and reduce heat accumulation.

[0063] Among them, the buried pipe temperature collector 61 in the U-shaped buried pipe 31 is a linear temperature detector (not shown in the drawings), and the linear temperature detector is arranged along the inner wall of the U-shaped buried pipe 31.

[0064] Embodiment 3

[0065] The difference from Embodiment 2 lies in that a pressure sensor and a flow sensor are connected to the input pipeline 7 and the output pipeline 8. Thus, the control unit monitors the pressure and flow rate of the input pipeline 7 and the output pipeline 8, monitors the power of the ground source heat pump system 100, and adjusts the pressure and flow rate of the input pipeline 7 and the output pipeline 8, as well as the power of the ground source heat pump system 100 according to the adjusted temperature to be regulated; thereby making the cold and heat load balancing process more intelligent, and at the same time enabling the ground source heat pump system 100 to operate more in line with the cold and heat load, achieving efficient and precise balancing.

[0066] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A ground source heat pump system, characterized in that, it includes: a control unit; an indoor monitoring unit, electrically connected to the control unit, the indoor monitoring unit is used to monitor the indoor temperature, ventilation condition, number of people flowing, operation of electrical equipment, and indoor structure, and transmit the monitored data to the control unit; and, a ground source heat exchange system and an indoor heating, ventilation, and air conditioning (HVAC) terminal system, both electrically connected to the control unit, the control unit controls the ground source heat exchange system and the indoor HVAC terminal system to transfer heat / cold according to the data transmitted by the indoor monitoring unit.

2. The ground source heat pump system according to claim 1, characterized in that, the indoor monitoring unit includes at least one first image collector and at least one first temperature collector.

3. The ground source heat pump system according to claim 1, characterized in that, it further includes an outdoor monitoring unit, electrically connected to the control unit, the outdoor monitoring unit is used to monitor the outdoor temperature, outdoor heat radiation condition, number of external walls of the building to be temperature-controlled, and area covered by shadows, and transmit the monitored data to the control unit; the control unit controls the ground source heat exchange system and the indoor HVAC terminal system to transfer heat / cold according to the data transmitted by the indoor monitoring unit and the outdoor monitoring unit.

4. The ground source heat pump system according to claim 3, characterized in that, the outdoor monitoring unit includes at least one second image collector and at least one second temperature collector.

5. The ground source heat pump system according to claim 4, characterized in that, the number of the at least one second image collector and the at least one second temperature collector is two; the two second image collectors and the two second temperature collectors are respectively arranged opposite to each other and are both clamped on the outside of the building to be temperature-controlled.

6. The ground source heat pump system according to claim 1, characterized in that, the ground source heat exchange system includes: a buried pipe with a heat exchange medium flowing inside for heat exchange with the soil; a ground source heat pump unit, connected to the buried pipe and the indoor HVAC terminal system, the ground source heat pump unit is used to transport the heat / cold in the heat exchange medium to the indoor HVAC terminal system; and, a heat treatment unit, connected to the ground source heat pump unit, for treating the remaining heat / cold of the ground source heat pump unit.

7. The ground source heat pump system according to claim 6, characterized in that, it further includes a soil monitoring unit, electrically connected to the control unit, for monitoring the temperature inside the buried pipe and the temperature of the soil near the buried pipe, and transmitting the monitored data to the control unit; the control unit controls the heat treatment unit to release heat / cold according to the data transmitted by the soil monitoring unit.

8. The ground source heat pump system according to claim 7, characterized in that, the soil monitoring unit includes a buried pipe temperature collector and a soil temperature collector.

9. The ground source heat pump system according to claim 6, characterized in that, The ground source heat pump unit, the buried pipes, and the indoor heating and air conditioning terminal system are all connected through input pipes and output pipes for the heat exchange medium to flow; Pressure sensors and flow sensors are provided on both the input pipes and the output pipes, and the pressure sensors and the flow sensors are electrically connected to the control unit.

10. A control method for a ground source heat pump system, based on the ground source heat pump system according to any one of claims 1-9, characterized in that, the control method for the ground source heat pump system comprises the following steps: Obtain indoor monitoring data and outdoor monitoring data; Query the mapping relationship according to the indoor monitoring data and the outdoor monitoring data to determine the values of the heat / cold transferred by the ground source heat exchange system and the indoor heating and air conditioning terminal system; Control the ground source heat exchange system and the indoor heating and air conditioning terminal system to release heat / cold according to the values of the heat / cold transferred by the ground source heat exchange system and the indoor heating and air conditioning terminal system.

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