Temperature control system and control method thereof

Abstract

The invention discloses a temperature control system and a control method thereof. The temperature control system comprises a refrigerant circulating system, an underground water heat exchanger, a dry cooler and a valve assembly. The dry cooler is connected between the refrigerant circulating system and the underground water heat exchanger, and the underground water heat exchanger is connected between the dry cooler and the refrigerant circulating system through a valve assembly; the valve assembly is used for enabling the refrigerant circulating system and the dry cooler to form a circulating loop and exchanging heat with the temperature control space and / or the temperature control equipment; the valve assembly is further used for enabling the underground water heat exchanger, the dry cooler and the refrigerant circulation system to form a circulation loop to exchange heat with the temperature control space and / or the temperature control equipment. The temperature control system provided by the embodiment of the invention can reduce energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control, and in particular to a temperature control system and a control method thereof. Background Art

[0002] With the popularization of new energy heavy-duty trucks, corresponding battery swap stations have also developed. Since the battery packs in the battery swap stations need to be cooled or heated during the charging and discharging process, a temperature control system of the battery swap station is required to control the temperature of the battery compartment and equipment compartment.

[0003] The existing temperature control system of battery swap stations has the problem of high energy consumption. Summary of the invention

[0004] The present invention provides a temperature control system and a control method thereof, which can realize the construction of different circulation loops by controlling the valve assembly, can flexibly select the heat exchange mode according to the actual environmental conditions, the requirements of the temperature control space and the operating status of the temperature control equipment, can maximize the energy utilization efficiency, and thus reduce the overall energy consumption.

[0005] In a first aspect, the present invention provides a temperature control system, comprising: a refrigerant circulation system, a groundwater heat exchanger, a dry cooler and a valve assembly; the dry cooler is connected between the refrigerant circulation system and the groundwater heat exchanger, and the groundwater heat exchanger is connected between the dry cooler and the refrigerant circulation system through the valve assembly; the valve assembly is used to form a circulation loop with the refrigerant circulation system and the dry cooler to exchange heat with the temperature control space and / or the temperature control equipment; the valve assembly is also used to form a circulation loop with the groundwater heat exchanger, the dry cooler and the refrigerant circulation system to exchange heat with the temperature control space and / or the temperature control equipment.

[0006] Optionally, the valve assembly includes a first valve, a second valve and a third valve; the temperature control system also includes a groundwater circulation pump; the inlet of the first valve is respectively connected to the outlet of the dry cooler and the first inlet of the second valve, and the outlet of the first valve is connected to the first inlet of the groundwater heat exchanger; the second inlet of the second valve is respectively connected to the inlet of the third valve and the outlet of the temperature control space and / or the temperature control equipment, the outlet of the third valve is connected to the refrigerant circulation system, and the groundwater heat exchanger forms a circulation loop with the groundwater pool through the groundwater circulation pump; when the first valve is opened, the third valve is closed, the second inlet of the second valve is connected to the outlet, and the groundwater When the circulation pump is turned on, the groundwater heat exchanger, the dry cooler and the refrigerant circulation system form a circulation loop, and exchange heat with the temperature control space and / or the temperature control equipment; when the first valve is opened, the third valve is closed, the second inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned off, the dry cooler and the refrigerant circulation system form a circulation loop, and exchange heat with the temperature control space and / or the temperature control equipment; when the first valve is closed, the third valve is opened, the first inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned off, the dry cooler and the refrigerant circulation system form a circulation loop, and exchange heat with the temperature control space and / or the temperature control equipment.

[0007] Optionally, the temperature control system further includes a first circulating water pump; a first end of the first circulating water pump is connected to an outlet of the dry cooler, and a second end of the first circulating water pump is connected to an inlet of the first valve.

[0008] The temperature control system also includes a water tank and a second circulating water pump; the water tank and the second circulating water pump are sequentially connected between the outlet of the second valve and the refrigerant circulation system.

[0009] Optionally, the refrigerant circulation system includes a first heat exchanger, a second heat exchanger, a compressor, a gas-liquid separator, an expansion valve and a four-way reversing valve; the first inlet of the first heat exchanger is connected to the first outlet of the groundwater heat exchanger, and the first outlet of the first heat exchanger is connected to the inlet of the dry cooler; the first inlet of the second heat exchanger is connected to the valve assembly, and the first outlet of the second heat exchanger is connected to the inlet of the temperature control space and / or the temperature control equipment; the first end of the compressor is connected to the first end of the four-way reversing valve, the second end of the compressor is connected to the first end of the gas-liquid separator, and the second end of the gas-liquid separator is connected to the third end of the four-way reversing valve; the second end of the four-way reversing valve is connected to the second inlet of the first heat exchanger, and the fourth end of the four-way reversing valve is connected to the second outlet of the second heat exchanger, and the four-way reversing valve is used to change the flow direction of the refrigerant in the first heat exchanger and the second heat exchanger so that the refrigerant circulation system operates in a heating state or a cooling state; the first end of the expansion valve is connected to the second outlet of the first heat exchanger, and the second end of the expansion valve is connected to the second inlet of the second heat exchanger.

[0010] Optionally, the temperature control system also includes a first exhaust valve and a first filter, a second exhaust valve and a second filter; the first exhaust valve and the first filter are connected in series between the first outlet of the first heat exchanger and the inlet of the dry cooler; the second exhaust valve and the second filter are connected in series between the first outlet of the second heat exchanger and the inlet of the temperature control space and / or the temperature control equipment.

[0011] Optionally, the temperature control system also includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor; the first temperature sensor is used to collect the water inlet temperature of the temperature control space and / or the temperature control equipment; the second temperature sensor is used to collect the temperature of the underground water pool; the third temperature sensor is used to collect the water outlet temperature of the dry cooler; the fourth temperature sensor is used to collect the outdoor ambient temperature.

[0012] In a second aspect, the present invention further provides a control method for a temperature control system, which is used in the temperature control system provided by any embodiment of the present invention, and the control method includes:

[0013] The cooling mode of the temperature control system is determined when a cooling instruction is received, and the heating mode of the temperature control system is determined when a heating instruction is received; wherein the cooling mode includes a first cooling mode, a second cooling mode and a third cooling mode, and the heating mode includes a first heating mode and a second heating mode; the refrigerant circulation system is controlled to be in a cooling state, a heating state or a non-working state according to the cooling mode or the heating mode, and the conduction state of the valve component is controlled.

[0014] Optionally, the valve assembly includes a first valve, a second valve and a third valve, and the temperature control system also includes a groundwater circulation pump; the steps of controlling the refrigerant circulation system to be in a cooling state, a heating state or a non-working state according to the cooling mode or the heating mode, and controlling the conduction state of the valve assembly include: when the temperature control system works in the first cooling mode, controlling the refrigerant circulation system to be in a cooling state, and controlling the first valve to be opened, the third valve to be closed, the second inlet of the second valve to be connected to the outlet, and the groundwater circulation pump to be closed; when the temperature control system works in the second cooling mode, controlling the refrigerant circulation system to be in a cooling state, and controlling the first valve to be opened, the third valve to be closed, the second inlet of the second valve to be connected to the outlet, and the groundwater circulation pump to be closed. and the groundwater circulation pump is turned on; when the temperature control system works in the third refrigeration mode, the refrigerant circulation system is controlled to be in a non-working state, and the first valve is controlled to be closed, the third valve is controlled to be opened, the first inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned off; when the temperature control system works in the first heating mode, the refrigerant circulation system is controlled to be in a heating state, and the first valve is controlled to be opened, the third valve is controlled to be closed, the second inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned off; when the temperature control system works in the second heating mode, the refrigerant circulation system is controlled to be in a heating state, and the first valve is controlled to be opened, the third valve is controlled to be closed, the second inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned on.

[0015] Optionally, when a cooling instruction is received, the cooling mode of the temperature control system is determined, and when a heating instruction is received, the step of determining the heating mode of the temperature control system includes: when a cooling instruction is received, when the outdoor ambient temperature To is greater than the water inlet temperature Ts of the temperature control space and / or the temperature control device - a first set value and the temperature Tc of the underground water pool is greater than or equal to the water inlet temperature Ts of the temperature control space and / or the temperature control device - a second set value, determining that the temperature control system operates in the first cooling mode; when a cooling instruction is received, when the outdoor ambient temperature To is greater than the water inlet temperature Ts of the temperature control space and / or the temperature control device - a first set value and the temperature Tc of the underground water pool is less than the water inlet temperature Ts of the temperature control space and / or the temperature control device - a second set value When the temperature Ts of the water inlet of the temperature control device is less than the second set value, the temperature control system is determined to operate in the second cooling mode; when a cooling instruction is received, when the outdoor ambient temperature To≤the water inlet temperature Ts of the temperature-controlled space and / or the temperature control device-the first set value, the temperature control system is determined to operate in the third cooling mode; when a heating instruction is received, when the temperature Tc of the underground water pool is less than the water outlet temperature Tg of the dry cooler + the second set value, the temperature control system is determined to operate in the first heating mode; when a heating instruction is received, when the temperature Tc of the underground water pool is greater than or equal to the water outlet temperature Tg of the dry cooler + the second set value, the temperature control system is determined to operate in the second heating mode.

[0016] The temperature control system provided by the embodiment of the present invention includes a refrigerant circulation system, a groundwater heat exchanger, a dry cooler and a valve assembly. By controlling the conduction state of the valve assembly, the dry cooler and the groundwater heat exchanger can be operated independently or simultaneously. At the same time, the dry cooler and the groundwater heat exchanger can directly exchange heat with the temperature control space and / or the temperature control equipment, or indirectly exchange heat with the temperature control space and / or the temperature control equipment through the refrigerant circulation system. In other words, the temperature control system provided by the embodiment of the present invention has diversified operating modes, which reduces energy consumption while ensuring the safe and stable operation of the temperature control system.

[0017] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a structural schematic diagram of a temperature control system provided by an embodiment of the present invention;

[0020] Figure 2 is a structural schematic diagram of another temperature control system provided by an embodiment of the present invention;

[0021] Figure 3 is a structural schematic diagram of another temperature control system provided by an embodiment of the present invention;

[0022] Figure 4 It is a flow chart of a control method of a temperature control system provided by an embodiment of the present invention.

[0023] Reference numerals:

[0024] 1-refrigeration cycle system; 11-first heat exchanger; 12-second heat exchanger; 13-compressor; 14-gas-liquid separator; 15-expansion valve; 16-four-way reversing valve;

[0025] 2- Groundwater heat exchanger;

[0026] 3-dry cooler; 31-cooling and heating fan; 32-heat exchange coil;

[0027] 4-first valve; 5-second valve; 6-third valve; 7-groundwater circulation pump; 8-first circulation water pump; 9-water tank; 10-second circulation water pump;

[0028] 17-first exhaust valve; 18-first filter; 19-second exhaust valve; 20-second filter; 21-first temperature sensor; 22-second temperature sensor; 23-third temperature sensor; 24-fourth temperature sensor;

[0029] A-first inlet of the second valve; B-second inlet of the second valve; C-outlet of the second valve;

[0030] A1-the first end of the four-way reversing valve; A2-the second end of the four-way reversing valve; A3-the third end of the four-way reversing valve; A4-the fourth end of the four-way reversing valve;

[0031] 100-underground pool;

[0032] 200- Temperature controlled space and / or temperature controlled equipment;

[0033] 300-Valve assembly. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0036] Figure 1 Schematic diagram of a temperature control system provided by an embodiment of the present invention. Figure 1 As shown, the temperature control system includes: a refrigerant circulation system 1, a groundwater heat exchanger 2, a dry cooler 3 and a valve assembly 300.

[0037] The dry cooler 3 is connected between the refrigerant circulation system 1 and the groundwater heat exchanger 2 , and the groundwater heat exchanger 2 is connected between the dry cooler 3 and the refrigerant circulation system 1 through a valve assembly 300 .

[0038] The valve assembly 300 is used to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. The valve assembly 300 is also used to form a circulation loop with the groundwater heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 to exchange heat with the temperature control space and / or the temperature control device 200.

[0039] Specifically, the temperature control system provided by the present invention can be used to exchange heat with various temperature control spaces and / or temperature control devices 200. For example, the temperature control device can be a battery pack, and the temperature control space can be a control room where the battery pack is located. The specific type of the temperature control space and / or the temperature control device 200 is not particularly limited in this application.

[0040] The refrigeration cycle system 1 may be a system including a compressor 13 , and the refrigeration cycle system 1 has three working states, namely, a cooling state, a heating state or a non-working state.

[0041] In some embodiments, the dry cooler 3 includes a cooling and heating fan 31 and a heat exchange coil 32. Optionally, the dry cooler 3 also includes a frame, and the cooling and heating fan 31 and the heat exchange coil 32 are both arranged in the frame. The cooling and heating fan 31 can accelerate the heat exchange efficiency between the heat exchange coil 32 and the air.

[0042] In some embodiments, the controller in the temperature control system determines the cooling mode of the temperature control system when receiving a cooling instruction, and determines the heating mode of the temperature control system when receiving a heating instruction, wherein the cooling mode includes a first cooling mode, a second cooling mode, and a third cooling mode, and the heating mode includes a first heating mode and a second heating mode.

[0043] In some embodiments, the monitoring device in the temperature control device can send a heating instruction or a cooling instruction to the controller in the temperature control system. Exemplarily, when the temperature of the temperature control device and / or the temperature control space 200 is greater than a first preset value, the monitoring device can send a cooling instruction to the controller in the temperature control system. When the temperature of the temperature control device and / or the temperature control space 200 is less than a second preset value, the monitoring device can send a heating instruction to the controller in the temperature control system. The first preset value is greater than the second preset value.

[0044] Optionally, when a cooling instruction is received, the cooling mode of the temperature control system is determined at least according to the relationship between the outdoor ambient temperature To and the water inlet temperature Ts of the temperature control space and / or the temperature control device 200. When a heating instruction is received, the heating mode of the temperature control system is determined at least according to the relationship between the temperature Tc of the underground water pool 100 and the water outlet temperature of the dry cooler 3.

[0045] Exemplarily, when a cooling instruction is received, when the outdoor ambient temperature To>the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value and the temperature Tc of the underground water pool 100≥the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the second set value, it is determined that the temperature control system operates in the first cooling mode. When the outdoor ambient temperature To>the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value and the temperature Tc of the underground water pool 100<the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the second set value, it is determined that the temperature control system operates in the second cooling mode. When the outdoor ambient temperature To≤the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value, it is determined that the temperature control system operates in the third cooling mode.

[0046] When receiving the heating instruction, when the temperature Tc of the underground water pool 100 is less than the outlet water temperature Tg of the dry cooler 3 + the second set value, it is determined that the temperature control system operates in the first heating mode. When the temperature Tc of the underground water pool 100 is greater than or equal to the outlet water temperature Tg of the dry cooler 3 + the second set value, it is determined that the temperature control system operates in the second heating mode.

[0047] When the temperature control system works in the first cooling mode, that is, when the temperature of the outdoor environment and the temperature of the underground water pool 100 are high, the valve assembly 300 is configured to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. That is, at this time, the refrigerant circulation system 1 works in the cooling state, and the dry cooler 3 is turned on.

[0048] When the temperature control system works in the second cooling mode, that is, the temperature of the outdoor environment is high, but the temperature of the underground water pool 100 is low, the valve assembly 300 is configured to form a circulation loop with the underground water heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 to exchange heat with the temperature control space and / or the temperature control device 200. That is to say, at this time, the refrigerant circulation system 1 works in the cooling state, the dry cooler 3 is turned on, and the cold water of the underground water pool 100 is pumped to the groundwater heat exchanger 2, and the cooling water from the dry cooler 3 is further cooled in the groundwater heat exchanger 2. At this time, the speed of the compressor 13 in the refrigerant circulation system 1 can be reduced, and the operating power consumption of the temperature control system can be reduced.

[0049] When the temperature control system works in the third cooling mode, that is, when the temperature of the outdoor environment is low, the valve assembly 300 is configured to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. However, at this time, the refrigerant circulation system 1 is not running, and the refrigerant circulation system 1 is equivalent to a pipeline, and only the dry cooler 3 is turned on, that is, at this time, the circulation loop formed by the refrigerant circulation system 1 and the dry cooler 3 is a natural cooling loop. By adjusting the speed of the condensing fan 31 in the dry cooler 3, the cooling capacity of the temperature control system can be adjusted, and the temperature control space and / or the temperature control device 200 are completely cooled by the outdoor cold source.

[0050] When the temperature control system works in the first heating mode, that is, when the temperature of the underground water pool 100 is low, the valve assembly 300 is configured to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. That is, at this time, the refrigerant circulation system 1 works in the heating state, and the dry cooler 3 is turned on.

[0051] When the temperature control system works in the second heating mode, that is, when the temperature of the underground water pool 100 is high, the valve assembly 300 is configured to form a circulation loop with the underground water heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 to exchange heat with the temperature control space and / or the temperature control device 200. That is to say, at this time, the refrigerant circulation system 1 works in the heating state, the dry cooler 3 is turned on, and the cold water of the underground water pool 100 is pumped to the underground water heat exchanger 2, and the water from the dry cooler 3 is further heated in the underground water heat exchanger 2. At this time, the speed of the condensing fan 31 in the dry cooler 3 can be reduced to reduce the operating power consumption of the temperature control system.

[0052] The temperature control system provided by the embodiment of the present invention includes a refrigerant circulation system, a groundwater heat exchanger, a dry cooler and a valve assembly. By controlling the conduction state of the valve assembly, the dry cooler and the groundwater heat exchanger can be operated independently or simultaneously. At the same time, the dry cooler and the groundwater heat exchanger can directly exchange heat with the temperature control space and / or the temperature control equipment, or indirectly exchange heat with the temperature control space and / or the temperature control equipment through the refrigerant circulation system. In other words, the temperature control system provided by the embodiment of the present invention has diversified operating modes, which reduces energy consumption while ensuring the safe and stable operation of the temperature control system.

[0053] Figure 2 is a structural diagram of another temperature control system provided by an embodiment of the present invention. Figure 2 The valve assembly 300 includes a first valve 4 , a second valve 5 and a third valve 6 . The temperature control system also includes a groundwater circulation pump 7 .

[0054] The inlet of the first valve 4 is connected to the outlet of the dry cooler 3 and the first inlet A of the second valve 5 respectively, and the outlet of the first valve 4 is connected to the first inlet of the groundwater heat exchanger 2 .

[0055] The second inlet B of the second valve 5 is connected to the inlet of the third valve 6 and the outlet of the temperature control space and / or the temperature control device 200 respectively, and the outlet of the third valve 6 is connected to the refrigerant circulation system 1. The groundwater heat exchanger 2 forms a circulation loop with the groundwater pool 100 through the groundwater circulation pump 7.

[0056] When the first valve 4 is opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is turned on, the groundwater heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature-controlled equipment 200.

[0057] When the first valve 4 is opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is turned off, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature-controlled equipment 200.

[0058] When the first valve 4 is closed, the third valve 6 is opened, the first inlet A of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is closed, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature-controlled equipment 200.

[0059] Optionally, the temperature control system further includes a first circulating water pump 8 , a first end of the first circulating water pump 8 is connected to an outlet of the dry cooler 3 , and a second end of the first circulating water pump 8 is connected to an inlet of the first valve 4 .

[0060] Specifically, the first valve 4 and the third valve 6 are electric two-way valves, and the second valve 5 is an electric three-way valve.

[0061] After receiving the cooling command, when the outdoor ambient temperature To is greater than the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200 - the first set value and the temperature Tc of the underground water pool 100 is greater than or equal to the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200 - the second set value, that is, when the temperature control system works in the first cooling mode, the refrigerant circulation system 1 is controlled to work in the cooling state, and the first valve 4 is opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is controlled to be closed, and the first circulation water pump 8 is turned on, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature control device 200. Among them, the water inlet temperature Ts-first set value of the temperature control space and / or the temperature control device 200 used as the basis for temperature control judgment, and the water inlet temperature Ts-second set value of the temperature control space and / or the temperature control device 200, the first set value can be 5°C, and the second set value can be 2°C; it only serves as an example, not a limitation, and can be adjusted according to the temperature control requirements in actual operation, and the same applies to other places in the text.

[0062] After receiving the cooling command, when the outdoor ambient temperature To is greater than the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200 - the first set value and the temperature Tc of the underground water pool 100 is less than the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200 - the second set value, that is, when the temperature control system works in the second cooling mode, the refrigerant circulation system 1 is controlled to be in a cooling state, and the first valve 4 is controlled to be opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 and the first circulation water pump 8 are opened, the groundwater heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature control device 200.

[0063] After receiving the cooling command, when the outdoor ambient temperature To≤the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value, that is, when the temperature control system works in the third cooling mode, the refrigerant circulation system 1 is controlled to be in an inoperative state, and the first valve 4 is controlled to be closed, the third valve 6 is controlled to be open, the first inlet A of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is controlled to be closed, and the first circulation water pump 8 is controlled to be opened. The dry cooler 3 and the refrigerant circulation system 1 constitute a circulation loop, which is a natural cooling loop. By adjusting the speed of the condensing fan 31 in the dry cooler 3, the cooling capacity of the temperature control system can be adjusted, and the temperature-controlled space and / or the temperature control device 200 are completely cooled by the outdoor cold source.

[0064] When a heating command is received, when the temperature Tc of the underground water pool 100 is less than the outlet water temperature Tg of the dry cooler 3 + the second set value, that is, when the temperature control system works in the first heating mode, the refrigerant circulation system 1 is controlled to be in a heating state, and the first valve 4 is controlled to be opened, the third valve 6 is controlled to be closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is controlled to be closed, and the first circulation water pump 8 is controlled to be opened, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature controlled space and / or the temperature control equipment 200.

[0065] When the temperature Tc of the underground water pool 100 is ≥ the outlet water temperature Tg of the dry cooler 3 + the second set value, that is, when the temperature control system works in the second heating mode, the refrigerant circulation system 1 is controlled to be in a heating state, and the first valve 4 is controlled to be opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 and the first circulation water pump 8 are turned on. At this time, the groundwater heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 form a circulation loop to exchange heat with the temperature controlled space and / or the temperature control equipment 200.

[0066] Figure 3 FIG. 1 is a schematic diagram of the structure of another temperature control system provided by an embodiment of the present invention. Figure 3As shown, optionally, the temperature control system further includes a water tank 9 and a second circulating water pump 10. The water tank 9 and the second circulating water pump 10 are sequentially connected between the outlet C of the second valve 5 and the refrigerant circulation system 1.

[0067] Specifically, since water has the characteristic of thermal expansion and contraction (below 4°C), the water tank 9 and the second circulating water pump 10 can be provided to buffer the water after heat exchange, thereby improving the energy-saving effect of the temperature control system.

[0068] Based on the above embodiments, continue to refer to Figure 3 Optionally, the refrigeration cycle system 1 includes a first heat exchanger 11 , a second heat exchanger 12 , a compressor 13 , a gas-liquid separator 14 , an expansion valve 15 and a four-way reversing valve 16 .

[0069] The first inlet of the first heat exchanger 11 is connected to the first outlet of the groundwater heat exchanger 2, and the first outlet of the first heat exchanger 11 is connected to the inlet of the dry cooler 3. The first inlet of the second heat exchanger 12 is connected to the valve assembly 300, and the first outlet of the second heat exchanger 12 is connected to the inlet of the temperature control space and / or the temperature control device 200.

[0070] The first end of the compressor 13 is connected to the first end A1 of the four-way reversing valve 16 , the second end of the compressor 13 is connected to the first end of the gas-liquid separator 14 , and the second end of the gas-liquid separator 14 is connected to the third end A3 of the four-way reversing valve 16 .

[0071] The second end A2 of the four-way reversing valve 16 is connected to the second inlet of the first heat exchanger 11, and the fourth end A4 of the four-way reversing valve 16 is connected to the second outlet of the second heat exchanger 12. The four-way reversing valve 16 is used to change the flow direction of the refrigerant in the first heat exchanger 11 and the second heat exchanger 12 so that the refrigerant circulation system 1 works in a heating state or a cooling state.

[0072] A first end of the expansion valve 15 is connected to the second outlet of the first heat exchanger 11 , and a second end of the expansion valve 15 is connected to the second inlet of the second heat exchanger 12 .

[0073] Specifically, the embodiment of the present invention does not specifically limit the specific types of the first heat exchanger 11 and the second heat exchanger 12. For example, the first heat exchanger 11 and the second heat exchanger 12 can be fin-tube heat exchangers or plate heat exchangers. The first heat exchanger 11 and the second heat exchanger 12 are used as condensers or evaporators.

[0074] The gas-liquid separator 14 can prevent excessive liquid from flowing back into the compressor 13 , thereby reducing the probability of liquid hammer in the compressor 13 , reducing the failure rate of the compressor 13 , and extending the service life of the compressor 13 .

[0075] When the refrigerant circulation system 1 is working in the refrigeration state, the first heat exchanger 11 acts as a condenser and the second heat exchanger 12 acts as an evaporator. The low-temperature and low-pressure refrigerant enters the compressor 13, which compresses the refrigerant into a high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas passes through the first end A1 and the second end A2 of the four-way reversing valve 16 and enters the first heat exchanger 11 for heat exchange, so that the superheated steam gradually becomes saturated steam and then becomes saturated liquid. The refrigerant liquid after throttling and reducing pressure through the expansion valve 15 enters the second heat exchanger 12, absorbs heat from the surrounding medium and evaporates into gas, realizing refrigeration.

[0076] When the refrigerant circulation system 1 is working in the heating state, the first heat exchanger 11 serves as an evaporator and the second heat exchanger 12 serves as a condenser. The refrigerant is compressed into high-temperature and high-pressure superheated steam in the compressor 13, discharged from the compressor 13 through the first end of the compressor 13, and then sent to the second heat exchanger 12 through the first end A1 and the fourth end A4 of the four-way reversing valve 16. The high-temperature and high-pressure superheated steam dissipates heat in the second heat exchanger 12, and the temperature of the air around the second heat exchanger 12 increases. After the refrigerant dissipates heat, it becomes a liquid at normal temperature and high pressure. After being throttled and reduced in pressure by the expansion valve 15 to become a refrigerant liquid at low temperature and low pressure, it enters the first exchanger 11. The refrigerant absorbs heat and vaporizes in the first heat exchanger 11, and becomes saturated steam again, and the cold air is blown out of the room by the outdoor fan. Finally, the refrigerant gas enters the gas-liquid separator 14 through the second end A2 and the third end A3 of the four-way reversing valve 16 for gas-liquid separation, and then returns to the second end of the compressor 13, and the reciprocating cycle is repeated to achieve heating.

[0077] Based on the above embodiments, continue to refer to Figure 2 Optionally, the temperature control system further includes a first exhaust valve 17 and a first filter 18 , a second exhaust valve 19 and a second filter 20 .

[0078] The first exhaust valve 17 and the first filter 18 are connected in series between the first outlet of the first heat exchanger 11 and the inlet of the dry cooler 3. The second exhaust valve 19 and the second filter 20 are connected in series between the first outlet of the second heat exchanger 12 and the inlet of the temperature control space and / or the temperature control device 200.

[0079] It is understandable that the first exhaust valve 17 and the second exhaust valve 19 can exhaust the air that may be mixed in the first heat exchanger 11 and the second heat exchanger 12 in actual work, ensuring that the coolant can stably flow in the first heat exchanger 11 and the second heat exchanger 12. The first filter 18 and the second filter 20 can absorb moisture in the refrigerant circuit, block impurities in the refrigerant circuit so that they cannot pass through, and prevent the refrigerant circuit pipeline from being blocked.

[0080] Based on the above embodiments, continue to refer to Figure 3Optionally, the temperature control system also includes a first temperature sensor 21 , a second temperature sensor 22 , a third temperature sensor 23 and a fourth temperature sensor 24 .

[0081] The first temperature sensor 21 is used to collect the water inlet temperature of the temperature control space and / or the temperature control device 200; the second temperature sensor 22 is used to collect the temperature of the underground water pool 100; the third temperature sensor 23 is used to collect the water outlet temperature of the dry cooler 3; the fourth temperature sensor 24 is used to collect the outdoor ambient temperature.

[0082] The first temperature sensor 21 , the second temperature sensor 22 , the third temperature sensor 23 and the fourth temperature sensor 24 are all connected to the controller in the temperature control system.

[0083] Continue to refer Figure 3 , the working process of the temperature control system is:

[0084] When a cooling command is received, when the outdoor ambient temperature To is greater than the inlet water temperature Ts of the temperature control space and / or the temperature control device 200 - the first set value and the temperature Tc of the underground water pool 100 is greater than or equal to the inlet water temperature Ts of the temperature control space and / or the temperature control device 200 - the second set value, that is, when the temperature control system works in the first cooling mode, the compressor cooling mode is operated. That is to say, at this time, the first heat exchanger 11 acts as a condenser and the second heat exchanger 12 acts as an evaporator, that is, the refrigerant circulation system 1 is in a cooling state, and the first valve 4 is controlled to be opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is closed; the second circulating water pump 10 is turned on, and the water in the water tank 9 is pumped to the second heat exchanger 12 to produce cold water, and then enters the temperature control space and / or the temperature control device 200 after passing through the second exhaust valve 19 and the second filter 20, and the temperature control space and / or the temperature control device 200 is cooled and then heated. The heated water enters the water tank 9 to form an evaporation side loop; the first circulating water pump 8 pumps the cooling water after cooling the dry cooler 3 to the first valve 4, the first valve 4 is opened, and the cooling water enters the dry cooler 3 after passing through the groundwater heat exchanger 2, the first heat exchanger 11, the first exhaust valve 17 and the first filter 18 to form a condensation side loop.

[0085] When a cooling command is received, when the outdoor ambient temperature To is greater than the inlet water temperature Ts of the temperature control space and / or the temperature control device 200 - the first set value and the temperature Tc of the underground water tank 100 is less than the inlet water temperature Ts of the temperature control space and / or the temperature control device 200 - the second set value, that is, the temperature control system operates in the second cooling mode, the compressor cooling mode and the groundwater cooling mode are operated at this time. That is to say, at this time, the first heat exchanger 11 acts as a condenser and the second heat exchanger 12 acts as an evaporator, that is, the refrigerant circulation system 1 is in a cooling state, and the first valve 4 is controlled to be opened, the third valve 6 is closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is closed; the second circulating water pump 10 is turned on, and the water in the water tank 9 is pumped to the second heat exchanger 12 to produce cold water, and then enters the temperature control space and / or the temperature control device 200 after passing through the second exhaust valve 19 and the second filter 20, and the temperature control space and / or the temperature control device 200 is cooled and then heated. The heated water enters the water tank 9 to form an evaporation side loop; the first circulating water pump 8 pumps the cooling water after cooling the dry cooler 3 to the first valve 4, the first valve 4 is opened, and the cooling water enters the dry cooler 3 after passing through the groundwater heat exchanger 2, the first heat exchanger 11, the first exhaust valve 17 and the first filter 18 to form a condensation side loop. At the same time, the groundwater circulation pump 7 is turned on to pump the cooling water from the groundwater pool 100 to the groundwater heat exchanger 2, and the cooling water from the dry cooler 3 is further cooled in the groundwater heat exchanger 2. At this time, the rotation speed of the compressor 13 can be reduced, thereby reducing the operating power consumption of the temperature control system.

[0086] When receiving the cooling command, when the outdoor environment temperature To≤the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value, that is, when the temperature-controlled system is working in the third cooling mode, the natural cooling mode is operated. That is, at this time, the refrigerant circulation system 1 is in a non-working state, and the first valve 4 is controlled to be closed, the third valve 6 is opened, the first inlet A of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is closed, and the first circulation water pump 8 and the second circulation water pump 10 are operated. The high-temperature water coming out of the temperature-controlled space and / or the temperature-controlled device 200 passes through the third valve 6, the first heat exchanger 11, the first exhaust valve 17, the first filter 18, the dry cooler 3, the first circulating water pump 8, the second valve 5, the water tank 9, the second circulating water pump 10, the second heat exchanger 12, the second exhaust valve 19 and the second filter 20 in sequence and then returns to the inlet 24 of the temperature-controlled space and / or the temperature-controlled device 200, forming a natural cooling loop. By adjusting the speed of the condensing fan 31, the cooling capacity of the temperature control system can be adjusted. At this time, the temperature-controlled space and / or the temperature control device 200 is completely cooled by the outdoor cold source.

[0087] When receiving the heating instruction, when the temperature Tc of the underground water pool 100 is less than the outlet water temperature Tg of the dry cooler 3 + the second set value, that is, when the temperature control system works in the first heating mode, the refrigerant circulation system 1 is controlled to be in the heating state, and the first valve 4 is controlled to be opened, the third valve 6 is controlled to be closed, the second inlet B of the second valve 5 is connected to the outlet C, and the underground water circulation pump 7 is closed; the second circulation water pump 10 is turned on, and the water in the water tank 9 is pumped to the second heat exchanger 12 to produce hot water, and then the hot water passes through the second exhaust valve 19 and the second filter 20, and enters the temperature control space and / or the temperature control device 200, and the temperature control space and / or the temperature control device 200 is heated and then cooled, and the cooled water enters the water tank 9 to form a condensation side loop. The first circulation water pump 8 pumps the water after absorbing heat from the dry cooler 3 to the first valve 4, the first valve 4 is opened, and the hot water passes through the underground water heat exchanger 2 and enters the first heat exchanger 11, evaporates and cools in the first heat exchanger 11, and enters the first filter 18 and the dry cooler 3 to form an evaporation side loop.

[0088] When receiving the heating instruction, when the temperature Tc of the underground water pool 100 is ≥ the outlet water temperature Tg of the dry cooler 3 + the second set value, that is, when the temperature control system is working in the second heating mode, the underground water heat source can be used to heat the evaporation side circuit. At this time, the underground water circulation pump 7 is turned on to pump the hot water in the underground water pool 100 to the underground water heat exchanger 2, further heating the water from the dry cooler 3, and reducing the speed of the condensing fan 31 in the dry cooler 3, thereby reducing the energy consumption of the temperature control system. Through the above scheme, the temperature control system, in the cooling mode or heating mode, uses the outdoor cold source, the underground water cold source or the heat source according to the outdoor temperature and the temperature of the underground water pool 100, and automatically operates the minimum energy consumption mode while ensuring the normal operation of the temperature control equipment, thereby reducing energy consumption.

[0089] Based on the same inventive concept, the present invention also provides a method for controlling a temperature control system to control the temperature control systems provided by the above embodiments. Figure 4 is a flow chart of a control method of a temperature control system provided by an embodiment of the present invention, combined with Figure 1 and Figure 4 , the control method of the temperature control system includes:

[0090] S401. Determine a cooling mode of a temperature control system when a cooling instruction is received, and determine a heating mode of the temperature control system when a heating instruction is received.

[0091] The cooling mode includes a first cooling mode, a second cooling mode and a third cooling mode, and the heating mode includes a first heating mode and a second heating mode.

[0092] Optionally, when a cooling instruction is received, the cooling mode of the temperature control system is determined based on at least the relationship between the outdoor ambient temperature and the water inlet temperature of the temperature control space and / or the temperature control device. When a heating instruction is received, the heating mode of the temperature control system is determined based on the relationship between the temperature of the underground water pool and the water outlet temperature of the dry cooler.

[0093] Exemplarily, when a cooling instruction is received, when the outdoor ambient temperature To>the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value and the temperature Tc of the underground water tank 100≥the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the second set value, it is determined that the temperature control system operates in the first cooling mode. When a cooling instruction is received, when the outdoor ambient temperature To>the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value and the temperature Tc of the underground water tank 100<the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the second set value, it is determined that the temperature control system operates in the second cooling mode. When a cooling instruction is received, when the outdoor ambient temperature To≤the inlet water temperature Ts of the temperature-controlled space and / or the temperature-controlled device 200-the first set value, it is determined that the temperature control system operates in the third cooling mode. When a heating instruction is received, when the temperature Tc of the underground water tank 100 is less than the outlet water temperature Tg of the dry cooler 3 + the second set value, the temperature control system is determined to operate in the first heating mode. When a heating instruction is received, when the temperature Tc of the underground water tank 100 is greater than or equal to the outlet water temperature Tg of the dry cooler 3 + the second set value, the temperature control system is determined to operate in the second heating mode.

[0094] S402, controlling the refrigerant circulation system to be in a cooling state, a heating state or an inoperative state according to the cooling mode or the heating mode, and controlling the conduction state of the valve assembly.

[0095] When the temperature control system works in the first cooling mode, that is, when the temperature of the outdoor environment and the temperature of the underground water pool 100 are high, the valve assembly 300 is configured to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. That is, at this time, the refrigerant circulation system 1 works in the cooling state, and the dry cooler 3 is turned on.

[0096] When the temperature control system works in the second cooling mode, that is, the temperature of the outdoor environment is high, but the temperature of the underground water pool 100 is low, the valve assembly 300 is configured to form a circulation loop with the underground water heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 to exchange heat with the temperature control space and / or the temperature control device 200. That is to say, at this time, the refrigerant circulation system 1 works in the cooling state, the dry cooler 3 is turned on, and the cold water of the underground water pool 100 is pumped to the groundwater heat exchanger 2, and the cooling water from the dry cooler 3 is further cooled in the groundwater heat exchanger 2. At this time, the speed of the compressor 13 in the refrigerant circulation system 1 can be reduced, and the operating power consumption of the temperature control system can be reduced.

[0097] When the temperature control system works in the third cooling mode, that is, when the temperature of the outdoor environment is low, the valve assembly 300 is configured to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. However, at this time, the refrigerant circulation system 1 is not running, and the refrigerant circulation system 1 is equivalent to a pipeline, and only the dry cooler 3 is turned on, that is, at this time, the circulation loop formed by the refrigerant circulation system 1 and the dry cooler 3 is a natural cooling loop. By adjusting the speed of the condensing fan 31 in the dry cooler 3, the cooling capacity of the temperature control system can be adjusted, and the temperature control space and / or the temperature control device 200 are completely cooled by the outdoor cold source.

[0098] When the temperature control system works in the first heating mode, that is, when the temperature of the underground water pool 100 is low, the valve assembly 300 is configured to form a circulation loop with the refrigerant circulation system 1 and the dry cooler 3 to exchange heat with the temperature control space and / or the temperature control device 200. That is, at this time, the refrigerant circulation system 1 works in the heating state, and the dry cooler 3 is turned on.

[0099] When the temperature control system works in the second heating mode, that is, when the temperature of the underground water pool 100 is high, the valve assembly 300 is configured to form a circulation loop with the underground water heat exchanger 2, the dry cooler 3 and the refrigerant circulation system 1 to exchange heat with the temperature control space and / or the temperature control device 200. That is to say, at this time, the refrigerant circulation system 1 works in the heating state, the dry cooler 3 is turned on, and the cold water of the underground water pool 100 is pumped to the underground water heat exchanger 2, and the water from the dry cooler 3 is further heated in the underground water heat exchanger 2. At this time, the speed of the condensing fan 31 in the dry cooler 3 can be reduced to reduce the operating power consumption of the temperature control system.

[0100] In some embodiments, reference Figure 2 When the valve assembly 300 includes a first valve 4, a second valve 5 and a third valve 6, the temperature control system includes a groundwater circulation pump 7. The steps of controlling the refrigerant circulation system 1 to be in a cooling state, a heating state or an inoperative state according to a cooling mode or a heating mode, and controlling the conduction state of the valve assembly 300 include:

[0101] When the temperature control system works in the first cooling mode, the refrigerant circulation system 1 is controlled to be in a cooling state, and the first valve 4 is controlled to be opened, the third valve 6 is controlled to be closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is closed. When the temperature control system works in the second cooling mode, the refrigerant circulation system 1 is controlled to be in a cooling state, and the first valve 4 is controlled to be opened, the third valve 6 is controlled to be closed, the second inlet B of the second valve 5 is controlled to be connected to the outlet C, and the groundwater circulation pump 7 is opened. When the temperature control system works in the third cooling mode, the refrigerant circulation system 1 is controlled to be in a non-working state, and the first valve 4 is controlled to be closed, the third valve 6 is controlled to be opened, the first inlet A of the second valve 5 is controlled to be connected to the outlet C, and the groundwater circulation pump 7 is closed. When the temperature control system works in the first heating mode, the refrigerant circulation system 1 is controlled to be in a heating state, and the first valve 4 is controlled to be opened, the third valve 6 is controlled to be closed, the second inlet B of the second valve 5 is controlled to be connected to the outlet C, and the groundwater circulation pump 7 is closed. When the temperature control system works in the second heating mode, the refrigerant circulation system 1 is controlled to be in a heating state, and the first valve 4 is controlled to be opened, the third valve 6 is controlled to be closed, the second inlet B of the second valve 5 is connected to the outlet C, and the groundwater circulation pump 7 is turned on.

[0102] The similarities between the control method of the temperature control system provided in the embodiment of the present invention and the temperature control system can be explained with reference to the description of the temperature control system, which will not be repeated here.

[0103] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature control system, characterized in that: include: Refrigerant circulation systems, groundwater heat exchangers, dry coolers and valve components; The dry cooler is connected between the refrigerant circulation system and the groundwater heat exchanger, and the groundwater heat exchanger is connected between the dry cooler and the refrigerant circulation system through the valve assembly; The valve assembly is used to form a circulation loop with the refrigerant circulation system and the dry cooler to exchange heat with the temperature-controlled space and / or the temperature-controlled equipment; The valve assembly is also used to form a circulation loop with the groundwater heat exchanger, the dry cooler and the refrigerant circulation system to exchange heat with the temperature-controlled space and / or the temperature-controlled equipment.

2. The temperature control system according to claim 1, characterized in that: The valve assembly includes a first valve, a second valve and a third valve; the temperature control system also includes a groundwater circulation pump; The inlet of the first valve is connected to the outlet of the dry cooler and the first inlet of the second valve respectively, and the outlet of the first valve is connected to the first inlet of the groundwater heat exchanger; The second inlet of the second valve is connected to the inlet of the third valve and the outlet of the temperature control space and / or the temperature control device respectively, the outlet of the third valve is connected to the refrigerant circulation system, and the groundwater heat exchanger forms a circulation loop with the groundwater pool through the groundwater circulation pump; When the first valve is opened, the third valve is closed, the second inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned on, the groundwater heat exchanger, the dry cooler and the refrigerant circulation system form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature-controlled equipment; When the first valve is opened, the third valve is closed, the second inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned off, the dry cooler and the refrigerant circulation system form a circulation loop to exchange heat with the temperature-controlled space and / or the temperature-controlled device; When the first valve is closed, the third valve is opened, the first inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned off, the dry cooler and the refrigerant circulation system form a circulation loop to exchange heat with the temperature-controlled space and / or temperature-controlled equipment.

3. The temperature control system according to claim 2, characterized in that: The temperature control system also includes a first circulating water pump; A first end of the first circulating water pump is connected to an outlet of the dry cooler, and a second end of the first circulating water pump is connected to an inlet of the first valve.

4. The temperature control system according to claim 2, characterized in that: The temperature control system also includes a water tank and a second circulating water pump; The water tank and the second circulating water pump are connected between the outlet of the second valve and the refrigerant circulation system in sequence.

5. The temperature control system according to claim 1, characterized in that: The refrigerant circulation system comprises a first heat exchanger, a second heat exchanger, a compressor, a gas-liquid separator, an expansion valve and a four-way reversing valve; The first inlet of the first heat exchanger is connected to the first outlet of the groundwater heat exchanger, and the first outlet of the first heat exchanger is connected to the inlet of the dry cooler; The first inlet of the second heat exchanger is connected to the valve assembly, and the first outlet of the second heat exchanger is connected to the inlet of the temperature-controlled space and / or the temperature-controlled device; The first end of the compressor is connected to the first end of the four-way reversing valve, the second end of the compressor is connected to the first end of the gas-liquid separator, and the second end of the gas-liquid separator is connected to the third end of the four-way reversing valve; The second end of the four-way reversing valve is connected to the second inlet of the first heat exchanger, and the fourth end of the four-way reversing valve is connected to the second outlet of the second heat exchanger. The four-way reversing valve is used to change the flow direction of the refrigerant in the first heat exchanger and the second heat exchanger so that the refrigerant circulation system works in a heating state or a cooling state. The first end of the expansion valve is connected to the second outlet of the first heat exchanger, and the second end of the expansion valve is connected to the second inlet of the second heat exchanger.

6. The temperature control system according to claim 5, characterized in that: The temperature control system further includes a first exhaust valve and a first filter, a second exhaust valve and a second filter; The first exhaust valve and the first filter are sequentially connected in series between the first outlet of the first heat exchanger and the inlet of the dry cooler; The second exhaust valve and the second filter are sequentially connected in series between the first outlet of the second heat exchanger and the inlet of the temperature control space and / or the temperature control device.

7. The temperature control system according to claim 1, characterized in that: The temperature control system also includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor; The first temperature sensor is used to collect the water inlet temperature of the temperature control space and / or the temperature control device; The second temperature sensor is used to collect the temperature of the underground water pool; The third temperature sensor is used to collect the outlet water temperature of the dry cooler; The fourth temperature sensor is used to collect the outdoor ambient temperature.

8. A method for controlling a temperature control system, characterized in that: For the temperature control system according to any one of claims 1 to 7, the control method comprises: Determine the cooling mode of the temperature control system when receiving a cooling instruction, and determine the heating mode of the temperature control system when receiving a heating instruction; wherein the cooling mode includes a first cooling mode, a second cooling mode and a third cooling mode, and the heating mode includes a first heating mode and a second heating mode; The refrigerant cycle system is controlled to be in a cooling state, a heating state or an inoperative state according to the cooling mode or the heating mode, and the conduction state of the valve component is controlled.

9. The control method according to claim 8, characterized in that: The valve assembly includes a first valve, a second valve and a third valve, and the temperature control system also includes a groundwater circulation pump; The step of controlling the refrigerant cycle system to be in a cooling state, a heating state or a non-working state according to the cooling mode or the heating mode, and controlling the conduction state of the valve assembly comprises: When the temperature control system works in the first refrigeration mode, the refrigerant circulation system is controlled to be in the refrigeration state, and the first valve is controlled to be opened, the third valve is controlled to be closed, the second inlet and the outlet of the second valve are connected, and the groundwater circulation pump is controlled to be closed; When the temperature control system works in the second refrigeration mode, the refrigerant circulation system is controlled to be in the refrigeration state, and the first valve is controlled to be opened, the third valve is controlled to be closed, the second inlet and the outlet of the second valve are connected, and the groundwater circulation pump is controlled to be turned on; When the temperature control system works in the third refrigeration mode, the refrigerant circulation system is controlled to be in the non-working state, and the first valve is controlled to be closed, the third valve is controlled to be opened, the first inlet and the outlet of the second valve are connected, and the groundwater circulation pump is controlled to be closed; When the temperature control system works in the first heating mode, the refrigerant circulation system is controlled to be in the heating state, and the first valve is controlled to be opened, the third valve is controlled to be closed, the second inlet and the outlet of the second valve are connected, and the groundwater circulation pump is controlled to be closed; When the temperature control system operates in the second heating mode, the refrigerant circulation system is controlled to be in the heating state, and the first valve is controlled to be opened, the third valve is closed, the second inlet and outlet of the second valve are connected, and the groundwater circulation pump is turned on.

10. The control method according to claim 8, characterized in that: The step of determining the cooling mode of the temperature control system when a cooling instruction is received, and determining the heating mode of the temperature control system when a heating instruction is received comprises: When receiving a cooling command, when the outdoor ambient temperature To> the water inlet temperature Ts of the temperature-controlled space and / or the temperature-controlled device minus the first set value and the temperature Tc of the underground water pool ≥ the water inlet temperature Ts of the temperature-controlled space and / or the temperature-controlled device minus the second set value, it is determined that the temperature control system operates in the first cooling mode; Upon receiving a cooling instruction, when the outdoor ambient temperature To is greater than the water inlet temperature Ts of the temperature-controlled space and / or the temperature-controlled device minus the first set value and the temperature Tc of the underground water pool is less than the water inlet temperature Ts of the temperature-controlled space and / or the temperature-controlled device minus the second set value, it is determined that the temperature control system is operating in the second cooling mode; Upon receiving a cooling instruction, when the outdoor environment temperature To is less than or equal to the water inlet temperature Ts of the temperature-controlled space and / or the temperature-controlled device minus a first set value, determining that the temperature control system operates in a third cooling mode; Upon receiving a heating instruction, when the temperature Tc of the underground water pool is less than the outlet water temperature Tg of the dry cooler + a second set value, determining that the temperature control system operates in a first heating mode; When a heating instruction is received, when the temperature Tc of the underground water pool ≥ the outlet water temperature Tg of the dry cooler + a second set value, it is determined that the temperature control system operates in the second heating mode.

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