Energy-saving temperature control system and climate simulation equipment

Abstract

The energy-saving temperature control system comprises a water chilling unit, a hot water unit and a surface air cooler, and the surface air cooler is communicated with the water chilling unit and the hot water unit through a cold water inlet pipe and a hot water outlet pipe. A heat recovery pipeline is arranged between the hot water outlet pipe and the cold water inlet pipe for heat recovery circulation heat exchange, the input end of the heat recovery pipeline is communicated with the output end of the surface air cooler through the hot water outlet pipe, and the output end of the heat recovery pipeline is communicated with the input end of the surface air cooler through the cold water inlet pipe. A three-way valve is arranged on a hot water pipeline communicated with the output end of the surface air cooler and used for adjusting the heat recovery flow of the tail end of the temperature control system, outputting a heat recovery medium according to a preset proportion, enabling the heat recovery medium to be mixed with cold water to enter the surface air cooler under the action of a water pump, and keeping constant proportion operation after the interior of the temperature control system reaches a preset temperature. The problem of energy consumption in use of current climate simulation equipment is solved, the temperature control requirement of the climate simulation equipment is met in different seasons, and energy consumption is reduced by using the principle of heat recovery circulation.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration engineering technology, and particularly relates to an energy-saving temperature control system and climate simulation equipment. Background Technology

[0002] Climate simulation equipment, including artificial climate chambers, environmental testing equipment, constant temperature testing equipment, and plant incubators, has wide applications in fields such as biology, agriculture, pharmaceuticals, chemicals, semiconductors, and metrology. Energy consumption of air conditioning systems has always been a significant issue for climate simulation equipment. Applications in these fields require precise temperature control, and current technologies necessitate refrigeration units to provide continuous cold and heat sources. This prevents the direct recycling of heat obtained from heat exchange at the system's terminals, resulting in substantial energy waste.

[0003] Currently, there are two technical solutions. The first involves connecting one outlet of the water pump and a three-way regulating valve to the water supply pipeline upstream of the heat exchanger inlet, while the other outlet of the three-way regulating valve is connected to the return water pipeline of the heat exchanger. Temperature regulation is achieved by adjusting the flow direction of the three-way valve to control the flow rate of cold water in the heat exchanger. The disadvantages of this approach are: 1. Even when the set temperature is reached indoors, the refrigerant in the system continues to be consumed, resulting in ineffective energy saving. 2. The flow rate and pressure of the refrigerant in the heat exchanger are unstable, leading to fluctuations in temperature control. 3. Insufficient refrigerant in the heat exchanger results in poor cooling performance, causing the system to continuously adjust operating parameters to achieve the specified temperature and humidity, thus increasing the system's workload and the risk of system failure. The second method uses the cooling water produced by the chiller unit as the cold source, and the hot water generated by heat recovery during the operation of the unit as the heat source, which is then delivered to the indoor heat exchanger. Temperature is regulated by controlling the flow rate of the chilled water pipes and the hot water pipes. The disadvantage is that although heat recovery technology is used for temperature regulation, the chiller unit needs to run continuously for 24 hours to provide chilled and hot water, and the energy consumption is still very high.

[0004] In conclusion, it is necessary to propose an energy-saving temperature control system to solve the energy consumption problem in the current use of climate simulation equipment. Utility Model Content

[0005] The purpose of this invention is to provide an energy-saving temperature control system that solves the energy consumption problem in the current use of climate simulation equipment, meets the temperature control requirements of climate simulation equipment in different seasons, and reduces energy consumption by utilizing the principle of heat recovery cycle.

[0006] The technical solution of this invention is: an energy-saving temperature control system, comprising: a chiller unit, a hot water unit, and a surface cooler.

[0007] The input end of the surface cooler is connected to the output end of the chiller unit and the output end of the hot water unit through a cold water inlet pipe to supply cold water;

[0008] The output end of the surface cooler is connected to the input end of the chiller and the input end of the hot water unit through a hot water outlet pipe to supply hot water.

[0009] A heat recovery pipeline is provided between the hot water outlet pipe and the cold water inlet pipe for heat recovery circulation and heat exchange. The input end of the heat recovery pipeline is connected to the output end of the surface cooler through the hot water outlet pipe, and the output end of the heat recovery pipeline is connected to the input end of the surface cooler through the cold water inlet pipe, forming a heat recovery circulation loop.

[0010] A three-way valve is installed on the hot water pipe connected to the output end of the surface cooler, and the three-way valve is located at the input end of the heat recovery pipe. It is used to adjust the heat recovery flow rate at the end of the temperature control system and output the heat recovery medium according to a preset ratio. The medium is mixed with cold water by the water pump installed on the pipe and enters the surface cooler for heat recovery circulation. When the internal temperature of the temperature control system reaches the preset temperature, it will maintain a constant ratio to achieve a constant temperature effect.

[0011] Preferably, one output end of the three-way valve is connected to the input end of the surface cooler via a cold water outlet pipe, and a water pump is installed on the cold water inlet pipe, so that hot water is pumped back through the heat recovery pipeline. The other output end of the three-way valve is connected to the input ends of the chiller unit and the hot water unit respectively via hot water inlet pipes to recover hot water. The acquired cold water is mixed with the hot water pumped back by the water pump and circulated into the surface cooler for heat recovery cycle operation to control the temperature, thereby eliminating the energy consumption of electric heating auxiliary and reducing the consumption of cold water.

[0012] Preferably, a bypass pipe is provided between the hot water outlet pipe and the cold water inlet pipe to prevent back pressure changes when the three-way valve diverts hot water, so that the system maintains the same flow rate throughout the process.

[0013] Preferably, a balancing valve is also provided on the hot water pipe connected to the output end of the surface cooler, which is used to automatically adjust the opening degree according to the pressure difference on both sides of the balancing valve, so as to avoid pressure fluctuations in the temperature control system due to flow changes when multiple constant temperature boxes or climate chambers share a single chiller unit pipe.

[0014] Preferably, the balancing valve is any one of a static hydraulic balancing valve, a self-operated flow control valve, and a self-operated differential pressure control valve.

[0015] Preferably, the cold water inlet pipe includes a first cold water inlet pipe, a second cold water inlet pipe, and a third cold water inlet pipe; the hot water outlet pipe includes a first hot water outlet pipe, a second hot water outlet pipe, and a third hot water outlet pipe; the output end of the chiller unit is connected to the input end of the first cold water inlet pipe; the output end of the hot water unit is connected to the input end of the second cold water inlet pipe; the output ends of the first and second cold water inlet pipes are both connected to the input end of the third cold water inlet pipe; the output end of the third cold water inlet pipe is connected to the input end of the surface cooler; the output end of the surface cooler is connected to the input end of the first hot water outlet pipe; the output end of the first hot water outlet pipe is connected to the input ends of both the second and third hot water outlet pipes; the output end of the second hot water outlet pipe is connected to the input end of the chiller unit; and the output end of the third hot water outlet pipe is connected to the input end of the hot water unit.

[0016] Preferably, a switch valve is provided on both the cold water inlet pipe and the hot water outlet pipe near the chiller unit and the hot water unit.

[0017] The present invention also provides a climate simulation device, including an energy-saving temperature control system as described in the above embodiments, including a constant temperature chamber or climate chamber, the constant temperature chamber or climate chamber including a plurality of sub-constant temperature chambers or sub-climate chambers, each of the sub-constant temperature chambers or sub-climate chambers being provided with a surface cooler, and a chiller unit and a hot water unit located outside the constant temperature chamber or climate chamber.

[0018] Preferably, the sub-temperature chamber or sub-climate chamber is equipped with a temperature sensor for collecting and detecting the internal temperature.

[0019] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art:

[0020] 1. This invention utilizes a temperature control structure with a proportional distribution of heat recovery at the end of the system, where chiller and hot water units, surface coolers, three-way valves, heat recovery pipelines, balancing pipelines, balancing valves, and controllers work together. The hot water generated by the heat exchanger is distributed by the three-way valve, and a portion of the hot water is pumped back through the heat recovery pipeline to mix with the chilled water supplied by the chiller unit. This mixture then circulates back into the heat exchanger to participate in temperature control, thus eliminating the energy consumption of electric heating assistance and reducing chilled water consumption. This achieves efficient energy utilization and precise temperature control. By effectively recovering heat and precisely controlling energy, energy consumption is reduced, which not only lowers operating costs but also reduces environmental impact.

[0021] 2. Through the heat recovery pipeline, the system can recover the heat at the output end of the surface cooler, transfer it to the input end, mix it with cold water, and reuse it for heat exchange, which significantly improves energy utilization efficiency and reduces dependence on external energy.

[0022] 3. This invention, through the adjustment of a three-way valve and a balancing valve, can mix cold water and hot water in a preset ratio as needed, or adjust the flow rate and pressure to achieve precise temperature control, maintain a constant indoor temperature, and achieve energy-saving effects.

[0023] 4. The present invention ensures that the system can maintain the pressure balance of the circulation pipeline during the heat recovery stage by setting up a balancing pipeline and a balancing valve, avoiding pressure fluctuations caused by changes in flow rate, and ensuring the stable operation of the system.

[0024] 5. This invention uses a controller to determine whether a water pump needs to be activated to adjust the water level based on data from a temperature sensor, thereby controlling the water flow. This automated management not only improves the system's response speed and accuracy but also reduces the need for human intervention. Attached Figure Description

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the energy-saving temperature control system according to an embodiment of the present invention;

[0027] Figure 2 This is an example of an energy-saving temperature control system described in an embodiment of the present invention. Figure 1 ;

[0028] Figure 3 This is an example of an energy-saving temperature control system described in an embodiment of the present invention. Figure 2 ;

[0029] in,

[0030] 1-Chiller unit; 2-Hot water unit; 3-Surface cooler; 4-Cold water inlet pipe; 5-Hot water outlet pipe; 6-Heat recovery pipeline; 7-Three-way valve; 8-Water pump; 9-Balancing pipeline; 10-Balancing valve; 11-Switch valve; 12-Controller; 13-Climate chamber; 14-Temperature sensor; 41-First cold water inlet pipe; 42-Second cold water inlet pipe; 43-Third cold water inlet pipe; 51-First hot water outlet pipe; 52-Second hot water outlet pipe; 53-Third hot water outlet pipe. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Example 1

[0034] like Figure 1 As shown, the present invention provides an energy-saving temperature control system, comprising: a chiller unit 1, a hot water unit 2, and a surface cooler 3. The input end of the surface cooler 3 is connected to the output end of the chiller unit 1 and the output end of the hot water unit 2 respectively through a chilled water inlet pipe 4 to supply chilled water; the output end of the surface cooler 3 is connected to the input end of the chiller unit 1 and the input end of the hot water unit 2 respectively through a hot water outlet pipe 5 to supply hot water; a heat recovery pipeline 6 is provided between the hot water outlet pipe 5 and the chilled water inlet pipe 4 for heat recovery circulation and heat exchange. The input end of the heat recovery pipeline 6 is connected to the output end of the surface cooler 3 through the hot water outlet pipe 5, and the output end of the heat recovery pipeline 6 is connected to the input end of the surface cooler 3 through the chilled water inlet pipe 4, forming a heat recovery circulation loop;

[0035] A three-way valve 7 is installed on the hot water pipe connected to the output end of the surface cooler 3, and the three-way valve 7 is located at the input end of the heat recovery pipe 6. It is used to regulate the heat recovery flow rate at the end of the temperature control system, outputting the heat recovery medium according to a preset ratio. The medium is mixed with cold water by the water pump 8 installed on the pipe and enters the surface cooler 3 for heat recovery circulation. When the internal temperature of the temperature control system reaches the preset temperature, it will maintain a constant ratio to achieve a constant temperature effect. By using the heat recovery pipe 6 for circulating heat exchange, the system can recover the heat discharged by the surface cooler 3, reducing energy waste. This method of recycling heat energy significantly improves the overall system's energy efficiency ratio (EER) and coefficient of performance (COP). Because the system can effectively recover and reuse heat energy, it reduces dependence on external energy sources (such as electricity, fossil fuels, etc.), thus significantly reducing operating costs. This is especially important for temperature control systems that operate for a long time, saving users a lot of energy costs. The system regulates the flow rate of the terminal heat recovery through the three-way valve 7, and mixes it with cold water to enter the surface cooler 3 for heat recovery circulation. It can automatically adjust according to the preset temperature to maintain a constant internal temperature, which ensures the stability and reliability of the temperature control effect. It is especially suitable for temperature-sensitive or precise temperature control applications.

[0036] In one embodiment, one output terminal of the three-way valve 7 is connected to the input terminal of the surface cooler 3 via a hot water outlet pipe 5, and a water pump 8 is installed on the cold water inlet pipe 4, so that hot water is drawn back by the water pump 8 through the heat recovery pipe 6. The other output terminal of the three-way valve 7 is connected to the output terminals of the chiller unit 1 and the hot water unit 2 respectively via the cold water inlet pipe 4 to supply cold water. The obtained cold water is mixed with the hot water drawn back by the water pump 8 and circulated into the surface cooler 3 for heat recovery circulation to control the temperature, thereby eliminating the energy consumption of electric heating auxiliary and reducing the consumption of cold water. Heat is recovered using the heat recovery pipe 6, and the recovered hot water is sent back to the system for reuse by the water pump 8. This recycling reduces energy waste and improves the overall energy efficiency of the system. The three-way valve 7 is an electric proportional regulating valve that can automatically adjust the mixing ratio of hot and cold water according to the temperature feedback signal to ensure the stability and accuracy of the output temperature. In this temperature control system, the aforementioned water pump 8 plays a crucial role in driving the water circulation. By increasing the water pressure, the water pump 8 ensures that water can flow to different components in the system, such as the surface cooler 3. This can be understood as follows: in the temperature control structure where heat recovery is proportionally distributed via the three-way valve 7, the hot water generated by the heat exchanger is distributed by the three-way valve 7. A portion of this hot water is drawn back by the water pump 8 through the heat recovery pipeline 6 and mixed with the chilled water supplied by the chiller unit 1, circulating back into the heat exchanger to participate in temperature control. This eliminates the energy consumption of electric heating auxiliary systems and also reduces chilled water consumption.

[0037] In this industry, a heat exchanger in the entire system requires a continuous flow of water circulating in the loop formed by the three-way valve 7. The loop cannot be empty; water must flow through it. This constant water supply leads to resource waste. To solve this problem, the core of this embodiment is the use of a three-way valve 7 located at the output end of the surface cooler 3 for flow distribution. This allows the cold water to gradually heat up upon entry, with a portion returning to the main pipe and ultimately being output to the hot water outlet pipes 5 of the chiller unit 1 and hot water unit 2. Another portion is output to the heat recovery loop 6 for subsequent continuous temperature control. When cold water is supplied to a particular room, the three-way valve 7 distributes the flow through each pipe. When heat exchange is used to maintain a constant temperature through heat recovery pipe 6, the flow rate of heat recovery water increases, so the amount of incoming cold water decreases accordingly. When the temperature stabilizes at a certain range, the three-way valve 7 operates at a certain ratio, for example, 50% or 60%. If 50% of the water flows back through the three-way valve 7 for heat recovery, the other 50% returns to the loop water system. This can be understood as follows: under constant indoor temperature conditions, only half of the cold water is used. When the temperature needs to be raised by more than 20 degrees, and the heat recovery flow rate is even greater, reaching 70% or 80%, only 20% of the cold water needs to be supplied to supplement the flow and maintain a constant temperature. This entire process is highly energy-efficient and improves the accuracy of temperature control.

[0038] In one embodiment, a bypass pipe 9 is provided between the hot water outlet pipe 5 and the cold water inlet pipe 4 to prevent back pressure changes when the three-way valve 7 diverts hot water, ensuring the system maintains a constant flow rate throughout the process. A constant flow rate prevents the liquid in the pipe from heating up or the liquid from the chiller or hot water unit from being overcooled, thus maintaining a constant temperature. According to fluid mechanics principles, water naturally flows from high-pressure areas to low-pressure areas, i.e., water goes to the lower pressure end. The pressure at the front end of the water pump 8 is set relatively low, while the pressure increases after passing through the pump 8. This pressure difference control guides the water flow. The location where the water flows must have relatively low pressure, and the pressure pumped out after being pressurized by the pump 8 is very high. The balance pipe used in this embodiment has a straight-through pipe structure, so water continuously flows back to the balance pipe. When the three-way valve 7 opens, the end outlet flows into the main pipeline, which outputs to the hot water outlet pipes 5 of the chiller unit 1 and the hot water unit 2. The pressure at the balancing valve 10 is even lower. When the water flows back to the main pipeline via the three-way valve, the pressure is set very low, lower than the pressure at the current position of the balancing valve 10, causing the circulation pipeline to form a back-and-forth circulation process. For example, after being drawn in through the main pipeline, when the water pump 8 pumps water into the surface cooler 3, the pressure at the front end of the water pump 8 is relatively low. Therefore, a differential pressure control is set at the front end. If the pressure at the front end of the water pump 8 is two kilograms, the pressure at the rear end of the water pump 8 may be six kilograms or five kilograms. If the front end of the water pump 8 is set to two kilograms, then at the three-way valve 7 and downstream of the three-way valve 7, that is, between the three-way valve 7 and the balancing valve 10, the pressure is set to one kilogram. When the water pump 8 draws in the water, the water pump 8 has a strong suction effect. That is, wherever there is a pressure difference, the water will flow to the place with a larger pressure difference. The water circulation can be maintained by setting the pressure of the water pump 8.

[0039] In one embodiment, a balancing valve 10 is also provided on the hot water pipe connected to the output end of the surface cooler 3. That is, it is set at the end of the temperature control system and is used to automatically adjust the opening degree according to the pressure difference on both sides of the balancing valve 10. When multiple constant temperature boxes or climate chambers 13 share a chiller unit 1 pipe, the pressure fluctuation caused by the flow rate change in the temperature control system is avoided.

[0040] In one embodiment, the balancing valve 10 is any one of a static hydraulic balancing valve 10, a self-operated flow control valve, and a self-operated differential pressure control valve. By precisely controlling the flow and pressure, the balancing valve 10 not only ensures the stability and reliability of the temperature control system, but also improves the system's energy efficiency, reduces maintenance costs, and enhances the overall operating efficiency.

[0041] In one embodiment, the cold water inlet pipe 4 includes a first cold water inlet pipe 41, a second cold water inlet pipe 42, and a third cold water inlet pipe 43; the hot water outlet pipe 5 includes a first hot water outlet pipe 51, a second hot water outlet pipe 52, and a third hot water outlet pipe 53; the output end of the chiller unit 1 is connected to the input end of the first cold water inlet pipe 41; the output end of the hot water unit 2 is connected to the input end of the second cold water inlet pipe 42; and the output ends of the first cold water inlet pipe 41 and the second cold water inlet pipe 42 are connected to the... The input end of the third cold water inlet pipe 43 is connected, and the output end of the third cold water inlet pipe 43 is connected to the input end of the surface cooler 3. The output end of the surface cooler 3 is connected to the input end of the first hot water outlet pipe 51. The output end of the first hot water outlet pipe 51 is connected to the input ends of the second hot water outlet pipe 52 and the third hot water outlet pipe 53, respectively. The output end of the second hot water outlet pipe 52 is connected to the input end of the chiller unit 1, and the output end of the third hot water outlet pipe 53 is connected to the input end of the hot water unit 2. By subdividing the first cold water inlet pipe 41, the second cold water inlet pipe 42, the first hot water outlet pipe 51, and the second hot water outlet pipe 52 into different paths, the first cold water inlet pipe 41 and the first hot water outlet pipe 51 form a chiller unit circuit, and the second cold water inlet pipe 42 and the second hot water outlet pipe 52 form a hot water unit circuit. By controlling the switching valves 11 on the chiller unit circuit and the hot water unit circuit, different cooling and heating needs in summer and winter can be met.

[0042] In one embodiment, a switch valve 11 is provided on both the cold water inlet pipe 4 and the hot water outlet pipe 5 near the chiller unit 1 and the hot water unit 2. For example, a first switch valve 11 is provided on the first cold water inlet pipe 41, a third switch valve 11 is provided on the second cold water inlet pipe 42, a second switch valve 11 is provided on the second hot water outlet pipe 52, and a fourth switch valve 11 is provided on the third hot water outlet pipe 53. The on / off valve 11 used in this embodiment can be used to open or close the water flow, thereby controlling the time and flow rate of water entering or leaving the chiller unit 1 and the hot water unit 2. During maintenance and repair, the on / off valve 11 can isolate the chiller unit 1 and the hot water unit 2, preventing water from entering equipment that may be under maintenance or needs to be shut down, which increases the safety of the system and the convenience of maintenance. By precisely controlling the operation of the chiller unit 1 or the hot water unit 2, its output can be adjusted according to actual needs, avoiding unnecessary energy consumption and thus achieving energy saving. The on / off valve 11 can prevent potential damage to the chiller unit 1 or the hot water unit 2 due to excessive pressure or excessive water flow, extending the service life of the equipment. When the system is started or shut down, gradually opening or closing the on / off valve 11 can reduce the impact of water flow on the system and protect the pipelines and equipment from the effects of water hammer.

[0043] In another embodiment, see Figure 2As shown, the cold water inlet pipe 4 also includes several cold water inlet pipe 4 branches, and the hot water outlet pipe 5 also includes several hot water outlet pipe 5 branches, which are respectively connected to the two ends of several surface coolers 3. By setting multiple branches, the chiller and hot water units can be controlled more flexibly to send cold water or hot water to the surface cooler 3, thereby better meeting the temperature control needs of different areas or rooms.

[0044] In one embodiment, a controller 12 is also included, used to determine whether the water pump 8 needs to be activated to control the water level based on the acquired indoor temperature. When the current temperature is detected to be higher than a temperature threshold, the controller 12 issues a control command to adjust the water flow, and the water pump 8 draws cold water and hot water to mix and enter the surface cooler 3 for heat recovery and circulation. Assuming an indoor temperature needs to be maintained at 20 degrees Celsius, the temperature sensor 14 continuously monitors the room temperature and sends the data to the controller 12. When the room temperature exceeds 20 degrees Celsius, the controller 12 activates the water pump 8, drawing cold water from the cold water system and exchanging heat through the surface cooler 3. Simultaneously, the three-way valve 7 distributes the cold water flow according to a set ratio, with part used for cooling and part returned to maintain system balance. As the room temperature gradually decreases, the system automatically adjusts the opening of the three-way valve 7 and the operation of the water pump 8 based on feedback from the temperature sensor 14 to maintain a constant temperature. This process not only ensures room comfort but also avoids energy waste through precise control.

[0045] See Figure 3 As shown, the present invention also provides a climate simulation device, including an energy-saving temperature control system as described in the above embodiments, including a constant temperature chamber or climate chamber 13, the constant temperature chamber or climate chamber 13 including a plurality of sub-constant temperature chambers or sub-climate chambers 13, each of the sub-constant temperature chambers or sub-climate chambers 13 being provided with a surface cooler 3, the chiller unit 1 and the hot water unit 2 being located outside the constant temperature chamber or climate chamber 13, and may also include a circulating fan.

[0046] In one embodiment, a temperature sensor 14 is provided inside the sub-temperature chamber or sub-climate chamber 13. The temperature sensor 14 is connected to the controller 12 of the temperature control system to collect and detect the internal temperature and feed it back to the controller 12. For example, when the current indoor temperature is detected to have reached the temperature threshold, the controller 12 controls the water level to determine whether to start the operation. If the operation needs to be started, the temperature threshold is set to 20 degrees. When the ambient temperature of the entire room is detected to be higher than 20 degrees, the controller 12 controls the water pump 8 to draw cold water for heat exchange, thereby achieving accurate temperature monitoring and automatic adjustment to ensure a constant temperature environment. The temperature sensor 14 used in this embodiment can monitor the temperature in the sub-temperature chamber or sub-climate chamber 13 in real time, ensuring that the temperature in each sub-space can reach the preset standard, thereby achieving precise temperature control. The temperature data provided by the sensor can be fed back to the controller 12, enabling the system to automatically adjust the output of the chiller unit 1 or the hot water unit 2, as well as the operation of the surface cooler 3, according to the actual temperature to maintain constant temperature conditions. Through continuous monitoring and adjustment, the system can be optimized according to actual needs, avoiding overcooling or heating, and improving energy efficiency and resource utilization.

[0047] The temperature sensor 14 used in this embodiment is also installed on the cold water inlet pipe 4 and the hot water outlet pipe 5. It can monitor the temperature of the cold water inlet pipe 4 and the hot water outlet pipe 5 in real time to ensure that the water temperature reaches the preset standard, thereby achieving precise temperature control. If the temperature of the cold water inlet pipe 4 or the hot water outlet pipe 5 is abnormal, the sensor can detect it in time and report it to the controller 12 for timely handling. Precise temperature control helps to reduce unnecessary energy consumption because the system only makes adjustments when needed, thereby reducing energy waste.

[0048] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. An energy-saving temperature control system, characterized in that, include: Chillers, hot water units, and surface coolers The input end of the surface cooler is connected to the output end of the chiller unit and the output end of the hot water unit through a cold water inlet pipe to supply cold water; The output end of the surface cooler is connected to the input end of the chiller and the input end of the hot water unit through a hot water outlet pipe to supply hot water. A heat recovery pipeline is provided between the hot water outlet pipe and the cold water inlet pipe for heat recovery circulation and heat exchange. The input end of the heat recovery pipeline is connected to the output end of the surface cooler through the hot water outlet pipe, and the output end of the heat recovery pipeline is connected to the input end of the surface cooler through the cold water inlet pipe, forming a heat recovery circulation loop. A three-way valve is installed on the hot water pipe connected to the output end of the surface cooler, and the three-way valve is located at the input end of the heat recovery pipe. It is used to adjust the heat recovery flow rate at the end of the temperature control system and output the heat recovery medium according to a preset ratio. The medium is mixed with cold water by the water pump installed on the pipe and enters the surface cooler for heat recovery circulation. When the internal temperature of the temperature control system reaches the preset temperature, it will maintain a constant ratio to achieve a constant temperature effect.

2. The energy-saving temperature control system according to claim 1, characterized in that, One output terminal of the three-way valve is connected to the input terminal of the surface cooler via a cold water outlet pipe, and a water pump is installed on the cold water inlet pipe, so that hot water is pumped back through the heat recovery pipeline. The other output terminal of the three-way valve is connected to the input terminals of the chiller unit and the hot water unit respectively via a hot water inlet pipe to recover hot water. The acquired cold water is mixed with the hot water pumped back by the water pump and circulated into the surface cooler for heat recovery cycle operation to control the temperature, thereby eliminating the energy consumption of electric heating auxiliary and reducing the consumption of cold water.

3. The energy-saving temperature control system according to claim 1, characterized in that, A bypass pipe is provided between the hot water outlet pipe and the cold water inlet pipe to prevent back pressure changes when the three-way valve diverts hot water, so that the system maintains the same flow rate throughout the process.

4. The energy-saving temperature control system according to claim 1, characterized in that, A balancing valve is also installed on the hot water pipe connected to the output end of the surface cooler. This valve is used to automatically adjust the opening degree according to the pressure difference on both sides of the balancing valve. When multiple constant temperature chambers or climate chambers share a single chiller unit pipe, this prevents pressure fluctuations in the temperature control system due to changes in flow rate.

5. The energy-saving temperature control system according to claim 4, characterized in that, The balancing valve can be any one of a static hydraulic balancing valve, a self-operated flow control valve, or a self-operated differential pressure control valve.

6. The energy-saving temperature control system according to claim 1, characterized in that, The cold water inlet pipe includes a first cold water inlet pipe, a second cold water inlet pipe, and a third cold water inlet pipe. The hot water outlet pipe includes a first hot water outlet pipe, a second hot water outlet pipe, and a third hot water outlet pipe. The output end of the chiller unit is connected to the input end of the first cold water inlet pipe. The output end of the hot water unit is connected to the input end of the second cold water inlet pipe. The output ends of the first and second cold water inlet pipes are both connected to the input end of the third cold water inlet pipe. The output end of the third cold water inlet pipe is connected to the input end of the surface cooler. The output end of the surface cooler is connected to the input end of the first hot water outlet pipe. The output end of the first hot water outlet pipe is connected to the input ends of both the second and third hot water outlet pipes. The output end of the second hot water outlet pipe is connected to the input end of the chiller unit. The output end of the third hot water outlet pipe is connected to the input end of the hot water unit.

7. The energy-saving temperature control system according to claim 1, characterized in that, Switch valves are installed on the cold water inlet pipe and the hot water outlet pipe near the chiller unit and the hot water unit.

8. A climate simulation device, characterized in that, The system includes an energy-saving temperature control system as described in any one of claims 1-7, comprising a constant temperature chamber or climate chamber, the constant temperature chamber or climate chamber comprising a plurality of sub-constant temperature chambers or sub-climate chambers, each of the sub-constant temperature chambers or sub-climate chambers being provided with a surface cooler, and a chiller unit and a hot water unit located outside the constant temperature chamber or climate chamber.

9. The climate simulation device as described in claim 8, characterized in that, The sub-temperature chamber or sub-climate chamber is equipped with a temperature sensor for collecting and detecting the internal temperature.

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