A chiller pipeline structure and flow control method

Abstract

The present invention discloses a chiller pipeline structure and flow control method, aiming to solve the problem that the traditional chiller is inconvenient to use with a fixed liquid flow rate and fixed temperature control method. The invention includes an electric regulating valve and a flow meter installed on the pipeline, a heat exchanger installed on the pipeline, a liquid inlet thermometer installed on the pipeline at the front end of the heat exchanger, and a liquid outlet thermometer installed on the pipeline at the rear end of the heat exchanger; when the flow detected by the flow meter exceeds the set range, the electric regulating valve automatically adjusts the opening. By installing the electric regulating valve and the flow meter on the pipeline, the automatic adjustment of the pipeline flow is achieved to meet the use requirements of different scenarios.

Description

Technical Field

[0001] The present invention relates to a water chiller, and more particularly to a water chiller pipeline structure and a flow control method. Background Art

[0002] At present, in the chiller control process, the liquid flow rate has a great influence on the temperature stability. Traditional chillers use a fixed liquid flow rate to adjust the fixed temperature control method, but when the device application scenario changes, the liquid flow rate also changes, which causes the temperature control logic to need to be readjusted, which is very inconvenient. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a chiller pipeline structure and flow control method, which can realize automatic adjustment of pipeline flow and meet the use requirements of different scenarios.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a chiller pipeline structure, including an electric regulating valve and a flow meter installed on the pipeline, a heat exchanger installed on the pipeline, an inlet thermometer installed on the pipeline at the front end of the heat exchanger, and an outlet thermometer installed on the pipeline at the rear end of the heat exchanger; when the flow detected by the flow meter exceeds the set range, the electric regulating valve automatically adjusts the opening.

[0005] When the chiller pipeline is running, the flow value of the pipeline is set according to the inlet temperature detected by the inlet thermometer, the set outlet temperature and the heat exchange efficiency of the heat exchanger; and the actual flow of the pipeline detected by the flow meter is compared with the set flow value to obtain the difference. When the difference exceeds the set range, the electric control valve automatically adjusts the opening until the difference reaches the set range. By installing an electric control valve and flow meter on the pipeline, the automatic adjustment of the pipeline flow is achieved to meet the use requirements of different scenarios.

[0006] Preferably, a pressure gauge is installed on the front end pipeline of the heat exchanger.

[0007] The pressure gauge is installed on the pipeline to facilitate timely detection of pipeline pressure and prevent damage to the pipeline caused by excessive pressure.

[0008] Preferably, the front end of the pipeline is connected to a liquid inlet valve, and the rear end of the pipeline is connected to a liquid outlet valve.

[0009] The setting of the liquid inlet valve and the liquid outlet valve facilitates the control of the flow and cutoff of the water flow in the pipeline.

[0010] Preferably, a driving pump is installed on the pipeline.

[0011] The driving pump provides power to the water flow, ensuring the smooth flow of water in the pipeline.

[0012] Preferably, an outflow check valve is installed on the pipeline near the outlet of the heat exchanger, a residual discharge branch pipe is connected in parallel on the pipeline at the rear end of the outflow check valve, a residual discharge check valve is installed in the residual discharge branch pipe, and the residual discharge branch pipe is connected to a residual discharge air pump.

[0013] After the water is taken from the pipeline, there will be residual water in the flow channel between the heat exchanger outlet and the pipeline outlet. At this time, the residual air pump works to blow air into the pipeline to blow out the residual water. When taking water next time, the water that has completed the heat exchange flows out of the heat exchanger and then is discharged from the pipeline outlet, so that the water that has completed the heat exchange can be taken at the beginning of the water taking, and the situation of taking out the residual water that has not been heat exchanged at the beginning of the water taking will not appear, which improves the user experience.

[0014] Preferably, the heat exchanger comprises a thermoelectric semiconductor refrigerator, a heat exchange base plate and a heat exchange pressure plate are connected to one side of the thermoelectric semiconductor refrigerator, heat exchange capillaries are arranged between the heat exchange base plate and the heat exchange pressure plate, and the heat exchange capillaries are connected in series on the pipeline.

[0015] Thermoelectric semiconductor refrigerators are small in size, light in weight, do not require refrigerants, and work reliably. The heat exchange tubes are clamped between the heat exchange bottom plate and the heat exchange pressure plate, and the heat exchange effect is good. Thermoelectric semiconductor refrigerators can switch between cooling and heating by switching the current direction, so that the chiller has both cooling and heating functions.

[0016] In another solution, the heat exchanger includes a thermoelectric semiconductor refrigerator, and a heat exchange base plate and a heat exchange pressure plate are connected to the opposite sides of the thermoelectric semiconductor refrigerator. Heat exchange tubes are arranged between the heat exchange base plate and the heat exchange pressure plate. One ends of the two heat exchange tubes are connected in parallel and then in series to the pipeline; the other ends of the two heat exchange tubes are connected to a switching valve, and the switching valve is connected to the pipeline.

[0017] Heat exchange tubes are installed on both sides of the thermoelectric semiconductor refrigerator. When the chiller uses the cooling function, the cooling surface of the thermoelectric semiconductor refrigerator cools and cools the heat exchange tubes on the cooling side. The heat exchange tubes on this side are connected to the pipeline through a switching valve to allow cold water to flow out of the pipeline. At this time, the temperature of the other heating side of the thermoelectric semiconductor refrigerator increases, and the water in the heat exchange tubes on the heating side is preheated so that hot water can be discharged immediately when the heating function is used next time. In addition, the water in the heat exchange tubes on the heating side can dissipate the heat to the side of the thermoelectric semiconductor refrigerator with increased temperature, thereby improving the working performance of the thermoelectric semiconductor refrigerator.

[0018] Similarly, when the chiller uses the heating function, the heating surface of the thermoelectric semiconductor refrigerator heats the heat exchange tube on the heating side, and the heat exchange tube on this side is connected to the pipeline through the switching valve to make hot water flow out of the pipeline. At this time, the temperature of the other cooling side of the thermoelectric semiconductor refrigerator is reduced, and the water in the heat exchange tube on the cooling side is pre-cooled so that the cold water can be discharged immediately when the cooling function is used next time.

[0019] Preferably, a first liquid inlet nozzle, a second liquid inlet nozzle and a liquid outlet nozzle are provided on the switching valve, the liquid outlet nozzle is connected to the pipeline, the first liquid inlet nozzle and the second liquid inlet nozzle are respectively connected to two heat exchange capillary tubes, and a valve flap is installed in the switching valve, and the movement of the valve flap connects the first liquid inlet nozzle with the liquid outlet nozzle or the second liquid inlet nozzle with the liquid outlet nozzle.

[0020] The first liquid inlet nozzle and the second liquid inlet nozzle on the switching valve are respectively connected to the two heat exchange tubes. The flow channel is switched by the movement of the valve disc, thereby realizing the connection between the first liquid inlet nozzle and the liquid outlet nozzle or the connection between the second liquid inlet nozzle and the liquid outlet nozzle, thereby realizing the switching of the cooling function and the heating function of the chiller.

[0021] Preferably, accommodating grooves are provided on the opposite surfaces of the heat exchange bottom plate and the heat exchange pressure plate, and the heat exchange capillary tubes are installed between the accommodating grooves on the heat exchange bottom plate and the heat exchange pressure plate.

[0022] The heat exchange capillary tubes are clamped between the accommodating grooves, the installation is stable and reliable, and the heat exchange effect is good.

[0023] A chiller pipeline flow control method realizes flow control of the chiller pipeline structure, sets the pipeline flow value according to the inlet liquid temperature detected by the inlet liquid thermometer, the set outlet liquid temperature and the heat exchange efficiency of the heat exchanger; and compares the actual pipeline flow detected by the flow meter with the set flow value to obtain the difference. When the difference exceeds the set range, the electric control valve automatically adjusts the opening until the difference reaches the set range.

[0024] When controlling the pipeline flow, the theoretical flow value is first preset according to the inlet temperature, the set outlet temperature and the heat exchange efficiency of the heat exchanger, and then the actual flow is detected by the flow meter. The difference between the actual flow and the set flow value is used to adjust the electric regulating valve so that the difference reaches the set range and meets the use requirements. The technical solution of the present invention realizes the automatic adjustment of pipeline flow and meets the use requirements of different scenarios.

[0025] Compared with the prior art, the present invention has the following beneficial effects: (1) The technical solution of the present invention realizes automatic adjustment of pipeline flow rate to meet the use requirements of different scenarios; (2) After the pipeline is filled with water, residual water can be discharged to prevent residual water from being discharged first when the next water is taken, which will not reach the use temperature; (3) Heat exchange capillaries are installed on both sides of the thermoelectric semiconductor refrigerator. When the heat exchange capillaries on one side are in use, the water in the heat exchange capillaries on the other side can be preheated or precooled, so that the water flow that meets the use temperature can be discharged immediately when the next water is taken. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the present invention.

[0027] Figure 2 It is a structural diagram of the heat exchanger of Example 1 of the present invention.

[0028] Figure 3 This is a connection diagram of a thermoelectric semiconductor cooler according to Embodiment 2 of the present invention.

[0029] Figure 4 This is a connection diagram of a thermoelectric semiconductor cooler according to Example 3 of the present invention.

[0030] Figure 5 This is a structural diagram of the switching valve of Example 3 of the present invention.

[0031] Figure 6 It is a structural diagram of the switching valve of Example 4 of the present invention.

[0032] Figure 7 It is a schematic diagram of the residual discharge branch pipe connection of the present invention.

[0033] In the figure: 1. electric regulating valve, 2. flow meter, 3. heat exchanger, 4. liquid inlet thermometer, 5. liquid outlet thermometer, 6. driving pump, 7. pressure gauge, 8. liquid inlet valve, 9. liquid outlet valve, 10. outflow check valve, 11. residual drain branch pipe, 12. residual drain check valve, 13. residual drain air pump, 14. heat exchange flow channel, 15. heat exchange tube, 16. partition, 17. thermoelectric semiconductor refrigerator, 18. heat exchange bottom plate, 19. heat exchange pressure plate, 20. heat exchange capillary tube, 21. accommodating groove, 22. switching valve, 23. transition chamber, 24. first liquid inlet nozzle, 25. second liquid inlet nozzle, 26. liquid outlet nozzle, 27. valve disc, 28. flow hole, 29. groove, 30. limit block, 31. motor. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: A chiller piping structure (see Figure 1 , Figure 2 ), including an electric regulating valve 1 and a flow meter 2 installed on the pipeline. The electric regulating valve 1 can automatically adjust the opening to adjust the pipeline flow. The flow meter 2 realizes real-time detection of the pipeline flow. A heat exchanger 3 is installed on the pipeline. The heat exchanger 3 heats or cools the liquid in the pipeline. An inlet liquid thermometer 4 is installed on the pipeline at the front end of the heat exchanger 3, and an outlet liquid thermometer 5 is installed on the pipeline at the rear end of the heat exchanger 3. The inlet liquid thermometer 4 detects the inlet liquid temperature, and the outlet liquid thermometer 5 detects the outlet liquid temperature. When the flow detected by the flow meter 2 exceeds the set range, the electric regulating valve 1 automatically adjusts the opening.

[0035] A driving pump 6 is installed on the pipeline. The driving pump 6 provides power to the water flow to ensure the smooth flow of the water flow in the pipeline. A pressure gauge 7 is installed on the front end pipeline of the heat exchanger 3. The pressure gauge 7 is installed on the pipeline to facilitate timely detection of the pressure of the pipeline to prevent damage to the pipeline caused by excessive pressure. The front end of the pipeline is connected to the liquid inlet valve 8, and the rear end of the pipeline is connected to the liquid outlet valve 9. The setting of the liquid inlet valve 8 and the liquid outlet valve 9 facilitates the control of the flow and cutoff of the water flow in the pipeline.

[0036] The pipeline at the front end of the heat exchanger 3 is sequentially installed with a driving pump 6, a liquid inlet valve 8, a liquid inlet thermometer 4, a flowmeter 2, an electric regulating valve 1, and a pressure gauge 7 in the direction of approaching the heat exchanger 3. The pipeline at the rear end of the heat exchanger 3 is installed with a liquid outlet valve 9 and a liquid outlet thermometer 5. The liquid outlet thermometer 5 is installed between the liquid outlet valve 9 and the heat exchanger 3. The pipeline between the liquid inlet valve 8 and the liquid outlet valve 9 is an internal pipeline.

[0037] like Figure 7 As shown, an outflow check valve 10 is installed on the pipeline near the outlet of the heat exchanger 3, and a residual drain branch pipe 11 is connected in parallel on the pipeline at the rear end of the outflow check valve 10. The residual drain branch pipe 11 is arranged close to the outflow check valve 10, and a residual drain check valve 12 is installed in the residual drain branch pipe 11. The residual drain branch pipe 11 is connected to a residual drain air pump 13. After the pipeline water is taken out, there will be residual water in the flow channel between the outlet of the heat exchanger 3 and the outlet of the pipeline. At this time, the residual drain air pump 13 works to blow air into the pipeline to blow the residual water out. When taking water next time, the water flow that has completed heat exchange flows out of the heat exchanger 3 and then is discharged from the outlet of the pipeline, so that the water that has completed heat exchange can be taken at the initial stage of water taking, and the situation of taking out residual water that has not been heat exchanged at the initial stage of water taking will not appear, which increases the use experience.

[0038] A serpentine heat exchange channel 14 is arranged in the heat exchanger 3, and both ends of the heat exchange channel 14 are connected in series on the pipeline. A serpentine heat exchange tube 15 is installed in the heat exchange channel 14, and the heat exchange tube 15 is connected to the compressor refrigeration system, so that the heat exchange tube 15 can achieve cooling and heating functions. The compressor refrigeration system is a prior art and is not described in this article. A plurality of spaced partitions 16 are arranged in the heat exchanger 3, and among two adjacent partitions 16, the left side of one partition 16 is connected to the inner wall of the heat exchanger 3, and the right side of the other partition 16 is connected to the inner wall of the heat exchanger 3, thereby forming a serpentine heat exchange channel 14.

[0039] A chiller pipeline flow control method realizes flow control of the chiller pipeline structure. First, the flow value of the pipeline is set according to the inlet temperature detected by the inlet thermometer 4, the set outlet temperature and the heat exchange efficiency of the heat exchanger 3; and the actual flow of the pipeline detected by the flowmeter 2 is compared with the set flow value to obtain the difference. When the difference exceeds the set range, the electric regulating valve 1 automatically adjusts the opening until the difference reaches the set range. The actual outlet temperature is detected by the outlet thermometer 5, and the actual outlet temperature is compared with the set outlet temperature. When the temperature difference exceeds the set range, the set flow value is adjusted until the difference between the actual outlet temperature and the set outlet temperature is within the set range.

[0040] When controlling the pipeline flow, first preset the theoretical flow value according to the liquid inlet temperature, the set liquid outlet temperature and the heat exchange efficiency of the heat exchanger 3, then detect the actual flow through the flow meter 2, and adjust the electric regulating valve 1 according to the difference obtained by comparing the actual flow with the set flow value, so that the difference reaches the set range and meets the use requirements. In addition, the actual liquid outlet temperature is detected by the liquid outlet thermometer 5, and the feedback of the liquid outlet temperature is obtained. When the actual liquid outlet temperature and the set liquid outlet temperature deviate greatly, it means that the set flow value has a deviation. At this time, the set flow value needs to be adjusted and corrected until the deviation between the actual liquid outlet temperature and the set liquid outlet temperature reaches the set range. The technical solution of the present invention realizes the automatic adjustment of pipeline flow and meets the use requirements of different scenarios.

[0041] Example 2: A chiller piping structure (see Figure 1 , Figure 3 ), including an electric regulating valve 1 and a flow meter 2 installed on the pipeline. The electric regulating valve 1 can automatically adjust the opening to adjust the pipeline flow. The flow meter 2 realizes real-time detection of the pipeline flow. A heat exchanger 3 is installed on the pipeline. The heat exchanger 3 heats or cools the liquid in the pipeline. An inlet liquid thermometer 4 is installed on the pipeline at the front end of the heat exchanger 3, and an outlet liquid thermometer 5 is installed on the pipeline at the rear end of the heat exchanger 3. The inlet liquid thermometer 4 detects the inlet liquid temperature, and the outlet liquid thermometer 5 detects the outlet liquid temperature. When the flow detected by the flow meter 2 exceeds the set range, the electric regulating valve 1 automatically adjusts the opening.

[0042] A driving pump 6 is installed on the pipeline. The driving pump 6 provides power to the water flow to ensure the smooth flow of the water flow in the pipeline. A pressure gauge 7 is installed on the front end pipeline of the heat exchanger 3. The pressure gauge 7 is installed on the pipeline to facilitate timely detection of the pressure of the pipeline to prevent damage to the pipeline caused by excessive pressure. The front end of the pipeline is connected to the liquid inlet valve 8, and the rear end of the pipeline is connected to the liquid outlet valve 9. The setting of the liquid inlet valve 8 and the liquid outlet valve 9 facilitates the control of the flow and cutoff of the water flow in the pipeline.

[0043] The pipeline at the front end of the heat exchanger 3 is sequentially installed with a driving pump 6, a liquid inlet valve 8, a liquid inlet thermometer 4, a flowmeter 2, an electric regulating valve 1, and a pressure gauge 7 in the direction of approaching the heat exchanger 3. The pipeline at the rear end of the heat exchanger 3 is installed with a liquid outlet valve 9 and a liquid outlet thermometer 5. The liquid outlet thermometer 5 is installed between the liquid outlet valve 9 and the heat exchanger 3. The pipeline between the liquid inlet valve 8 and the liquid outlet valve 9 is an internal pipeline.

[0044] like Figure 7 As shown, an outflow check valve 10 is installed on the pipeline near the outlet of the heat exchanger 3, and a residual drain branch pipe 11 is connected in parallel on the pipeline at the rear end of the outflow check valve 10. The residual drain branch pipe 11 is arranged close to the outflow check valve 10, and a residual drain check valve 12 is installed in the residual drain branch pipe 11. The residual drain branch pipe 11 is connected to a residual drain air pump 13. After the pipeline water is taken out, there will be residual water in the flow channel between the outlet of the heat exchanger 3 and the outlet of the pipeline. At this time, the residual drain air pump 13 works to blow air into the pipeline to blow the residual water out. When taking water next time, the water flow that has completed heat exchange flows out of the heat exchanger 3 and then is discharged from the outlet of the pipeline, so that the water that has completed heat exchange can be taken at the initial stage of water taking, and the situation of taking out residual water that has not been heat exchanged at the initial stage of water taking will not appear, which increases the use experience.

[0045] The heat exchanger 3 includes a thermoelectric semiconductor refrigerator 17, and a heat exchange base plate 18 and a heat exchange pressure plate 19 are connected to one side of the thermoelectric semiconductor refrigerator 17. The heat exchange base plate 18 is arranged in contact with the surface of the thermoelectric semiconductor refrigerator 17. Heat exchange tubes 20 are arranged between the heat exchange base plate 18 and the heat exchange pressure plate 19. The heat exchange tubes 20 are arranged in a serpentine tube structure and are connected in series on the pipeline.

[0046] Semicircular receiving grooves 21 are provided on the opposite surfaces of the heat exchange bottom plate 18 and the heat exchange pressure plate 19 , and the heat exchange capillary tubes 20 are installed between the receiving grooves 21 on the heat exchange bottom plate 18 and the heat exchange pressure plate 19 .

[0047] Thermoelectric semiconductor refrigerator 17 is small in size, light in weight, does not require refrigerant, and works reliably. Heat exchange capillary 20 is sandwiched between heat exchange bottom plate 18 and heat exchange pressure plate 19, and has good heat exchange effect. Thermoelectric semiconductor refrigerator 17 can switch between cooling and heating by switching the current direction, so that the chiller has both cooling and heating functions.

[0048] A chiller pipeline flow control method realizes flow control of the chiller pipeline structure. First, the flow value of the pipeline is set according to the inlet temperature detected by the inlet thermometer 4, the set outlet temperature and the heat exchange efficiency of the heat exchanger 3; and the actual flow of the pipeline detected by the flowmeter 2 is compared with the set flow value to obtain the difference. When the difference exceeds the set range, the electric regulating valve 1 automatically adjusts the opening until the difference reaches the set range. The actual outlet temperature is detected by the outlet thermometer 5, and the actual outlet temperature is compared with the set outlet temperature. When the temperature difference exceeds the set range, the set flow value is adjusted until the difference between the actual outlet temperature and the set outlet temperature is within the set range.

[0049] When controlling the pipeline flow, first preset the theoretical flow value according to the liquid inlet temperature, the set liquid outlet temperature and the heat exchange efficiency of the heat exchanger 3, then detect the actual flow through the flow meter 2, and adjust the electric regulating valve 1 according to the difference obtained by comparing the actual flow with the set flow value, so that the difference reaches the set range and meets the use requirements. In addition, the actual liquid outlet temperature is detected by the liquid outlet thermometer 5, and the feedback of the liquid outlet temperature is obtained. When the actual liquid outlet temperature and the set liquid outlet temperature deviate greatly, it means that the set flow value has a deviation. At this time, the set flow value needs to be adjusted and corrected until the deviation between the actual liquid outlet temperature and the set liquid outlet temperature reaches the set range. The technical solution of the present invention realizes the automatic adjustment of pipeline flow and meets the use requirements of different scenarios.

[0050] Example 3: A chiller piping structure (see Figure 1 , Figure 4 , Figure 5 ), including an electric regulating valve 1 and a flow meter 2 installed on the pipeline. The electric regulating valve 1 can automatically adjust the opening to adjust the pipeline flow. The flow meter 2 realizes real-time detection of the pipeline flow. A heat exchanger 3 is installed on the pipeline. The heat exchanger 3 heats or cools the liquid in the pipeline. An inlet liquid thermometer 4 is installed on the pipeline at the front end of the heat exchanger 3, and an outlet liquid thermometer 5 is installed on the pipeline at the rear end of the heat exchanger 3. The inlet liquid thermometer 4 detects the inlet liquid temperature, and the outlet liquid thermometer 5 detects the outlet liquid temperature. When the flow detected by the flow meter 2 exceeds the set range, the electric regulating valve 1 automatically adjusts the opening.

[0051] A driving pump 6 is installed on the pipeline. The driving pump 6 provides power to the water flow to ensure the smooth flow of the water flow in the pipeline. A pressure gauge 7 is installed on the front end pipeline of the heat exchanger 3. The pressure gauge 7 is installed on the pipeline to facilitate timely detection of the pressure of the pipeline to prevent damage to the pipeline caused by excessive pressure. The front end of the pipeline is connected to the liquid inlet valve 8, and the rear end of the pipeline is connected to the liquid outlet valve 9. The setting of the liquid inlet valve 8 and the liquid outlet valve 9 facilitates the control of the flow and cutoff of the water flow in the pipeline.

[0052] The pipeline at the front end of the heat exchanger 3 is sequentially installed with a driving pump 6, a liquid inlet valve 8, a liquid inlet thermometer 4, a flowmeter 2, an electric regulating valve 1, and a pressure gauge 7 in the direction of approaching the heat exchanger 3. The pipeline at the rear end of the heat exchanger 3 is installed with a liquid outlet valve 9 and a liquid outlet thermometer 5. The liquid outlet thermometer 5 is installed between the liquid outlet valve 9 and the heat exchanger 3. The pipeline between the liquid inlet valve 8 and the liquid outlet valve 9 is an internal pipeline.

[0053] like Figure 7 As shown, an outflow check valve 10 is installed on the pipeline near the outlet of the heat exchanger 3, and a residual drain branch pipe 11 is connected in parallel on the pipeline at the rear end of the outflow check valve 10. The residual drain branch pipe 11 is arranged close to the outflow check valve 10, and a residual drain check valve 12 is installed in the residual drain branch pipe 11. The residual drain branch pipe 11 is connected to a residual drain air pump 13. After the pipeline water is taken out, there will be residual water in the flow channel between the outlet of the heat exchanger 3 and the outlet of the pipeline. At this time, the residual drain air pump 13 works to blow air into the pipeline to blow the residual water out. When taking water next time, the water flow that has completed heat exchange flows out of the heat exchanger 3 and then is discharged from the outlet of the pipeline, so that the water that has completed heat exchange can be taken at the initial stage of water taking, and the situation of taking out residual water that has not been heat exchanged at the initial stage of water taking will not appear, which increases the use experience.

[0054] The heat exchanger 3 includes a thermoelectric semiconductor refrigerator 17, and the two opposite sides of the thermoelectric semiconductor refrigerator 17 are connected to a heat exchange base plate 18 and a heat exchange pressure plate 19. The heat exchange base plate 18 is arranged in contact with the surface of the thermoelectric semiconductor refrigerator 17. A heat exchange capillary 20 is arranged between the heat exchange base plate 18 and the heat exchange pressure plate 19. The heat exchange capillary 20 is arranged in a serpentine tube structure. One end of the two heat exchange capillary 20 is connected in parallel and then connected in series to the pipeline; the other ends of the two heat exchange capillary 20 are connected to a switching valve 22, and the switching valve 22 is connected to the pipeline. Semicircular accommodating grooves 21 are arranged on the opposite surfaces of the heat exchange base plate 18 and the heat exchange pressure plate 19, and the heat exchange capillary 20 is installed between the accommodating grooves 21 on the heat exchange base plate 18 and the heat exchange pressure plate 19.

[0055] The switching valve 22 has a cylindrical structure, a transition chamber 23 is arranged in the switching valve 22, a first liquid inlet nozzle 24, a second liquid inlet nozzle 25 and a liquid outlet nozzle 26 are arranged on the switching valve 22, the first liquid inlet nozzle 24, the second liquid inlet nozzle 25 and the liquid outlet nozzle 26 are all connected with the transition chamber 23, the first liquid inlet nozzle 24 and the second liquid inlet nozzle 25 are arranged on the side wall of the switching valve 22, the liquid outlet nozzle 26 is arranged at the end of the switching valve 22, the liquid outlet nozzle 26 is connected with the pipeline, the first liquid inlet nozzle 24 and the second liquid inlet nozzle 25 are respectively connected with the two heat exchange capillaries 20, a valve flap 27 is installed in the switching valve 22, the valve flap 27 is connected with the piston cylinder telescopic rod, and the movement of the valve flap 27 makes the first liquid inlet nozzle 24 connected with the liquid outlet nozzle 26 or the second liquid inlet nozzle 25 connected with the liquid outlet nozzle 26. The valve flap 27 is a columnar structure, and the valve flap 27 is adapted to be inserted in the transition chamber 23. A through hole 28 is provided on the valve flap 27, one end of the through hole 28 is connected to the end of the valve flap 27, and the other end of the through hole 28 extends to the outer wall of the valve flap 27. The piston cylinder drives the valve flap 27 to move telescopically, so that the first liquid inlet nozzle 24 is connected to the liquid outlet nozzle 26 or the second liquid inlet nozzle 25 is connected to the liquid outlet nozzle 26.

[0056] In the initial state, the opening end of the flow hole 28 on the outer wall of the valve disc 27 and the first liquid inlet nozzle 24 are blocked, and the second liquid inlet nozzle 25, the transition chamber 23, and the liquid outlet nozzle 26 are connected. The piston cylinder drives the valve disc 27 to move, and the opening end of the flow hole 28 on the outer wall of the valve disc 27 is correspondingly connected to the first liquid inlet nozzle 24. At this time, the second liquid inlet nozzle 25 is blocked, and the first liquid inlet nozzle 24, the flow hole 28, the transition chamber 23, and the liquid outlet nozzle 26 are connected. Therefore, through the movement of the valve disc 27, the switching connection between the two heat exchange capillaries 20 and the pipeline is realized.

[0057] Heat exchange tubes 20 are installed on both sides of the thermoelectric semiconductor refrigerator 17. When the chiller uses the cooling function, the cooling surface of the thermoelectric semiconductor refrigerator 17 cools and cools the heat exchange tubes 20 on the cooling side. The heat exchange tubes 20 on this side are connected to the pipeline through the switching valve 22 to allow cold water to flow out of the pipeline. At this time, the temperature of the other heating side of the thermoelectric semiconductor refrigerator 17 increases, and the water in the heat exchange tubes 20 on the heating side is preheated so that the hot water can be discharged immediately when the heating function is used next time. In addition, the water in the heat exchange tubes 20 on the heating side can dissipate the heat of the side of the thermoelectric semiconductor refrigerator 17 with increased temperature, thereby improving the working performance of the thermoelectric semiconductor refrigerator 17.

[0058] Similarly, when the chiller uses the heating function, the heating surface of the thermoelectric semiconductor refrigerator 17 heats the heat exchange tube 20 on the heating side. The heat exchange tube 20 on this side is connected to the pipeline through the switching valve 22 to allow hot water to flow out of the pipeline. At this time, the temperature of the other cooling side of the thermoelectric semiconductor refrigerator 17 is reduced, and the water in the heat exchange tube 20 on the cooling side is pre-cooled so that the cold water can be discharged immediately when the cooling function is used next time.

[0059] A chiller pipeline flow control method realizes flow control of the chiller pipeline structure. First, the flow value of the pipeline is set according to the inlet temperature detected by the inlet thermometer 4, the set outlet temperature and the heat exchange efficiency of the heat exchanger 3; and the actual flow of the pipeline detected by the flowmeter 2 is compared with the set flow value to obtain the difference. When the difference exceeds the set range, the electric regulating valve 1 automatically adjusts the opening until the difference reaches the set range. The actual outlet temperature is detected by the outlet thermometer 5, and the actual outlet temperature is compared with the set outlet temperature. When the temperature difference exceeds the set range, the set flow value is adjusted until the difference between the actual outlet temperature and the set outlet temperature is within the set range.

[0060] When controlling the pipeline flow, first preset the theoretical flow value according to the liquid inlet temperature, the set liquid outlet temperature and the heat exchange efficiency of the heat exchanger 3, then detect the actual flow through the flow meter 2, and adjust the electric regulating valve 1 according to the difference obtained by comparing the actual flow with the set flow value, so that the difference reaches the set range and meets the use requirements. In addition, the actual liquid outlet temperature is detected by the liquid outlet thermometer 5, and the feedback of the liquid outlet temperature is obtained. When the actual liquid outlet temperature and the set liquid outlet temperature deviate greatly, it means that the set flow value has a deviation. At this time, the set flow value needs to be adjusted and corrected until the deviation between the actual liquid outlet temperature and the set liquid outlet temperature reaches the set range. The technical solution of the present invention realizes the automatic adjustment of pipeline flow and meets the use requirements of different scenarios.

[0061] Example 4: A chiller piping structure (see Figure 1 , Figure 4 , Figure 6 ), including an electric regulating valve 1 and a flow meter 2 installed on the pipeline. The electric regulating valve 1 can automatically adjust the opening to adjust the pipeline flow. The flow meter 2 realizes real-time detection of the pipeline flow. A heat exchanger 3 is installed on the pipeline. The heat exchanger 3 heats or cools the liquid in the pipeline. An inlet liquid thermometer 4 is installed on the pipeline at the front end of the heat exchanger 3, and an outlet liquid thermometer 5 is installed on the pipeline at the rear end of the heat exchanger 3. The inlet liquid thermometer 4 detects the inlet liquid temperature, and the outlet liquid thermometer 5 detects the outlet liquid temperature. When the flow detected by the flow meter 2 exceeds the set range, the electric regulating valve 1 automatically adjusts the opening.

[0062] A driving pump 6 is installed on the pipeline. The driving pump 6 provides power to the water flow to ensure the smooth flow of the water flow in the pipeline. A pressure gauge 7 is installed on the front end pipeline of the heat exchanger 3. The pressure gauge 7 is installed on the pipeline to facilitate timely detection of the pressure of the pipeline to prevent damage to the pipeline caused by excessive pressure. The front end of the pipeline is connected to the liquid inlet valve 8, and the rear end of the pipeline is connected to the liquid outlet valve 9. The setting of the liquid inlet valve 8 and the liquid outlet valve 9 facilitates the control of the flow and cutoff of the water flow in the pipeline.

[0063] The pipeline at the front end of the heat exchanger 3 is sequentially installed with a driving pump 6, a liquid inlet valve 8, a liquid inlet thermometer 4, a flowmeter 2, an electric regulating valve 1, and a pressure gauge 7 in the direction of approaching the heat exchanger 3. The pipeline at the rear end of the heat exchanger 3 is installed with a liquid outlet valve 9 and a liquid outlet thermometer 5. The liquid outlet thermometer 5 is installed between the liquid outlet valve 9 and the heat exchanger 3. The pipeline between the liquid inlet valve 8 and the liquid outlet valve 9 is an internal pipeline.

[0064] like Figure 7 As shown, an outflow check valve 10 is installed on the pipeline near the outlet of the heat exchanger 3, and a residual drain branch pipe 11 is connected in parallel on the pipeline at the rear end of the outflow check valve 10. The residual drain branch pipe 11 is arranged close to the outflow check valve 10, and a residual drain check valve 12 is installed in the residual drain branch pipe 11. The residual drain branch pipe 11 is connected to a residual drain air pump 13. After the pipeline water is taken out, there will be residual water in the flow channel between the outlet of the heat exchanger 3 and the outlet of the pipeline. At this time, the residual drain air pump 13 works to blow air into the pipeline to blow the residual water out. When taking water next time, the water flow that has completed heat exchange flows out of the heat exchanger 3 and then is discharged from the outlet of the pipeline, so that the water that has completed heat exchange can be taken at the initial stage of water taking, and the situation of taking out residual water that has not been heat exchanged at the initial stage of water taking will not appear, which increases the use experience.

[0065] The heat exchanger 3 includes a thermoelectric semiconductor refrigerator 17, and the two opposite sides of the thermoelectric semiconductor refrigerator 17 are connected to a heat exchange base plate 18 and a heat exchange pressure plate 19. The heat exchange base plate 18 is arranged in contact with the surface of the thermoelectric semiconductor refrigerator 17. A heat exchange capillary 20 is arranged between the heat exchange base plate 18 and the heat exchange pressure plate 19. The heat exchange capillary 20 is arranged in a serpentine tube structure. One end of the two heat exchange capillary 20 is connected in parallel and then connected in series to the pipeline; the other ends of the two heat exchange capillary 20 are connected to a switching valve 22, and the switching valve 22 is connected to the pipeline. Semicircular accommodating grooves 21 are arranged on the opposite surfaces of the heat exchange base plate 18 and the heat exchange pressure plate 19, and the heat exchange capillary 20 is installed between the accommodating grooves 21 on the heat exchange base plate 18 and the heat exchange pressure plate 19.

[0066] The switching valve 22 is provided with a first liquid inlet nozzle 24, a second liquid inlet nozzle 25 and a liquid outlet nozzle 26. The liquid outlet nozzle 26 is connected to the pipeline. The first liquid inlet nozzle 24 and the second liquid inlet nozzle 25 are respectively connected to the two heat exchange capillaries 20. A valve disc 27 is installed in the switching valve 22. The valve disc 27 is rotatably installed on the switching valve 22. The first liquid inlet nozzle 24 and the second liquid inlet nozzle 25 are circumferentially spaced on the switching valve 22. The liquid outlet nozzle 26 is provided on the valve disc 27. The movement of the valve disc 27 makes the first liquid inlet nozzle 24 communicate with the liquid outlet nozzle 26 or the second liquid inlet nozzle 25 communicate with the liquid outlet nozzle 26. A groove 29 is provided on the switching valve 22. The valve disc 27 is a disc-shaped structure. The valve disc 27 is rotatably installed at the position of the groove 29. A limit block 30 is connected to the switching valve 22. The limit block 30 is supported on the surface of the valve disc 27 to limit the valve disc 27. A motor 31 is installed on the switching valve 22. The output shaft of the motor 31 is connected to the valve disc 27.

[0067] In the initial state, the liquid outlet nozzle 26 is blocked by the bottom surface of the groove 29. When the valve flap 27 rotates to overlap the liquid outlet nozzle 26 with the first liquid inlet nozzle 24, the first liquid inlet nozzle 24 is connected to the liquid outlet nozzle 26. When the valve flap 27 rotates to overlap the liquid outlet nozzle 26 with the second liquid inlet nozzle 25, the second liquid inlet nozzle 25 is connected to the liquid outlet nozzle 26.

[0068] Heat exchange tubes 20 are installed on both sides of the thermoelectric semiconductor refrigerator 17. When the chiller uses the cooling function, the cooling surface of the thermoelectric semiconductor refrigerator 17 cools and cools the heat exchange tubes 20 on the cooling side. The heat exchange tubes 20 on this side are connected to the pipeline through the switching valve 22 to allow cold water to flow out of the pipeline. At this time, the temperature of the other heating side of the thermoelectric semiconductor refrigerator 17 increases, and the water in the heat exchange tubes 20 on the heating side is preheated so that the hot water can be discharged immediately when the heating function is used next time. In addition, the water in the heat exchange tubes 20 on the heating side can dissipate the heat of the side of the thermoelectric semiconductor refrigerator 17 with increased temperature, thereby improving the working performance of the thermoelectric semiconductor refrigerator 17.

[0069] Similarly, when the chiller uses the heating function, the heating surface of the thermoelectric semiconductor refrigerator 17 heats the heat exchange tube 20 on the heating side. The heat exchange tube 20 on this side is connected to the pipeline through the switching valve 22 to allow hot water to flow out of the pipeline. At this time, the temperature of the other cooling side of the thermoelectric semiconductor refrigerator 17 is reduced, and the water in the heat exchange tube 20 on the cooling side is pre-cooled so that the cold water can be discharged immediately when the cooling function is used next time.

[0070] A chiller pipeline flow control method realizes flow control of the chiller pipeline structure. First, the flow value of the pipeline is set according to the inlet temperature detected by the inlet thermometer 4, the set outlet temperature and the heat exchange efficiency of the heat exchanger 3; and the actual flow of the pipeline detected by the flowmeter 2 is compared with the set flow value to obtain the difference. When the difference exceeds the set range, the electric regulating valve 1 automatically adjusts the opening until the difference reaches the set range. The actual outlet temperature is detected by the outlet thermometer 5, and the actual outlet temperature is compared with the set outlet temperature. When the temperature difference exceeds the set range, the set flow value is adjusted until the difference between the actual outlet temperature and the set outlet temperature is within the set range.

[0071] When controlling the pipeline flow, first preset the theoretical flow value according to the liquid inlet temperature, the set liquid outlet temperature and the heat exchange efficiency of the heat exchanger 3, then detect the actual flow through the flow meter 2, and adjust the electric regulating valve 1 according to the difference obtained by comparing the actual flow with the set flow value, so that the difference reaches the set range and meets the use requirements. In addition, the actual liquid outlet temperature is detected by the liquid outlet thermometer 5, and the feedback of the liquid outlet temperature is obtained. When the actual liquid outlet temperature and the set liquid outlet temperature deviate greatly, it means that the set flow value has a deviation. At this time, the set flow value needs to be adjusted and corrected until the deviation between the actual liquid outlet temperature and the set liquid outlet temperature reaches the set range. The technical solution of the present invention realizes the automatic adjustment of pipeline flow and meets the use requirements of different scenarios.

[0072] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A chiller piping structure, characterized in that: It includes an electric regulating valve and a flow meter installed on the pipeline, a heat exchanger is installed on the pipeline, a liquid inlet thermometer is installed on the pipeline at the front end of the heat exchanger, and a liquid outlet thermometer is installed on the pipeline at the rear end of the heat exchanger; when the flow rate detected by the flow meter exceeds the set range, the electric regulating valve automatically adjusts the opening.

2. A chiller piping structure according to claim 1, characterized in that: Install a pressure gauge on the front end pipeline of the heat exchanger.

3. A chiller piping structure according to claim 1, characterized in that: The front end of the pipeline is connected to the liquid inlet valve, and the rear end of the pipeline is connected to the liquid outlet valve.

4. A chiller piping structure according to claim 1, characterized in that: Install a driving pump on the pipeline.

5. A chiller piping structure according to any one of claims 1 to 4, characterized in that: An outflow check valve is installed on the pipeline close to the outlet of the heat exchanger, a residual discharge branch pipe is connected in parallel to the pipeline at the rear end of the outflow check valve, a residual discharge check valve is installed in the residual discharge branch pipe, and the residual discharge branch pipe is connected to a residual discharge air pump.

6. A chiller piping structure according to claim 1, characterized in that: The heat exchanger comprises a thermoelectric semiconductor refrigerator, one side of which is connected with a heat exchange bottom plate and a heat exchange pressure plate, and heat exchange capillary tubes are arranged between the heat exchange bottom plate and the heat exchange pressure plate, and the heat exchange capillary tubes are connected in series on the pipeline.

7. A chiller piping structure according to claim 1, characterized in that: The heat exchanger includes a thermoelectric semiconductor refrigerator, and a heat exchange base plate and a heat exchange pressure plate are connected to the opposite sides of the thermoelectric semiconductor refrigerator. Heat exchange tubes are arranged between the heat exchange base plate and the heat exchange pressure plate. One ends of the two heat exchange tubes are connected in parallel and then connected in series to the pipeline; the other ends of the two heat exchange tubes are connected to the switching valve, and the switching valve is connected to the pipeline.

8. A chiller piping structure according to claim 7, characterized in that: A first liquid inlet nozzle, a second liquid inlet nozzle and a liquid outlet nozzle are arranged on the switching valve, the liquid outlet nozzle is connected to the pipeline, the first liquid inlet nozzle and the second liquid inlet nozzle are respectively connected to two heat exchange capillary tubes, a valve disc is installed in the switching valve, and the movement of the valve disc connects the first liquid inlet nozzle with the liquid outlet nozzle or the second liquid inlet nozzle with the liquid outlet nozzle.

9. A chiller piping structure according to claim 6 or 7, characterized in that: Receiving grooves are arranged on the opposite surfaces of the heat exchange bottom plate and the heat exchange pressure plate, and the heat exchange capillary tubes are installed between the receiving grooves on the heat exchange bottom plate and the heat exchange pressure plate.

10. A method for controlling flow in a chiller pipeline, characterized in that: Achieve flow control of the chiller pipeline structure according to any one of claims 1 to 9, and set the flow value of the pipeline according to the inlet temperature detected by the inlet thermometer, the set outlet temperature and the heat exchange efficiency of the heat exchanger; The actual flow rate of the pipeline detected by the flow meter is compared with the set flow value to obtain the difference. When the difference exceeds the set range, the electric control valve automatically adjusts the opening until the difference reaches the set range.

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