A fluid regeneration circuit system applied to a combined excavating and anchoring machine

Abstract

The utility model relates to a kind of fluid regeneration loop systems applied to excavate anchor integrated machine, including water inlet pipeline, parallel to the pipeline I of water inlet pipeline export, pipeline II and pipeline III, pipeline I and pipeline III export communication valve block one, valve block one communication pipeline IV, pipeline V and pipeline VI, three pipelines are respectively communicated gear oil cooler and cutting motor, oil pump motor and conveyor motor;Three pipeline exports are communicated with pipeline IX, three-way ball valve is set on pipeline IX, and the two exports of three-way ball valve are respectively communicated with pipeline VII and pipeline VIII, pipeline VII is communicated cutting part spray pipeline, and pipeline IX and pipeline VIII are communicated with valve block two, and valve block two is communicated fan spray pipeline;Pipeline X and pipeline II export are communicated with rig deslagging dust removal pipeline;Valve block two and valve block one are communicated with backflow pipeline, and heat dissipation module is provided on backflow pipeline.The utility model realizes the recycling of water, and water resource utilization rate is high.

Description

Technical Field

[0001] This utility model relates to the field of tunneling and anchoring machine technology, and in particular to a fluid regeneration circuit system applied to tunneling and anchoring machines. Background Technology

[0002] A roadheader-anchor (BAR) is a mechanical device suitable for tunneling and support in underground coal mine roadways, enabling simultaneous tunneling and support. The BAR's structure mainly includes a traveling unit, loading unit, transportation unit, cutting unit, drilling and anchoring system, dust removal and temporary support system, and hydraulic and electrical systems.

[0003] The machine is divided into several parts: a walking section that drives the entire roadheader via a tracked chassis and provides power for tunneling; a loading section that collects coal slag from the face and dumps it into a transport section; a transport section that operates on a conveyor principle and transports coal slag from the face to the tail of the roadheader; a cutting section that cuts the coal body with a rotating cutting drum to achieve roadway tunneling; a drilling and anchoring system that includes drilling and anchoring devices on the left and right sides, each consisting of a top anchor drilling machine and a side anchor drilling machine; and a dust removal and temporary support system equipped with a dust removal fan to remove dust at the face.

[0004] During the operation of the tunneling and anchoring machine, dust is inevitably generated during the cutting and loading processes; the drilling rig also requires flushing and slag removal during use; and the motors driving various mechanisms also generate high temperatures, such as the cutting motor, oil pump motor, and conveyor motor, which have high heat output. Therefore, the motors in key mechanisms require heat dissipation, the cutting section requires dust suppression spraying, the dust removal fan also requires dust suppression spraying, and the drilling rig itself requires water spraying for dust removal, flushing, and slag removal during operation.

[0005] Therefore, to ensure the reliable operation of the roadheader, a fluid system is installed on the roadheader for heat dissipation of various components and dust removal and flushing operations. An effective fluid system can control the motor temperature and can enter the spray system and the anchor drilling machine for dust suppression and slag removal.

[0006] Some fluid systems employ a multi-pipe design, with one pipe used for motor cooling, another for dust suppression, etc. These pipes are relatively independent, resulting in excessive total water intake and failing to achieve water conservation. During the operation of the roadheader / anchor machine, wastewater generated by the fluid system is directly discharged, resulting in a large volume of wastewater and water waste. Furthermore, the drainage point is near the roadheader / anchor machine, which can easily cause stagnation and severely affect the machine's normal operation. Therefore, designing a fluid system regeneration loop for roadheader / anchor machines is essential. Summary of the Invention

[0007] To address the problem of excessive water intake and drainage in tunneling and anchoring machines, which leads to significant water waste, this invention provides a fluid regeneration loop system for integrated tunneling and anchoring machines. This system optimizes the fluid system design, redirecting water used for motor cooling to spray dust suppression and slag flushing, thus reducing water consumption. Simultaneously, the water flow can be recycled, improving water resource utilization and reducing drainage volume, thereby achieving water conservation.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A fluid regeneration loop system for a tunneling and anchoring machine includes an external water inlet pipeline system, a motor cooling system, a cutting section / fan spray system, a drilling rig slag removal and dust removal system, and a recirculation heat dissipation system.

[0010] The external water inlet pipeline system includes an inlet pipeline, and pipelines I, II and III connected in parallel to the outlet of the inlet pipeline. The outlets of pipelines I and III are both connected to valve block I, which facilitates the collection and redistribution of water in one place.

[0011] The motor cooling system includes pipes IV, V and VI, which are respectively connected to valve block one. Pipe IV connects the gear oil cooler and the cutting motor in series. Pipe V connects to the oil pump motor. Pipe VI connects to the two conveyor motors, which facilitates cooling of the components on the excavator that need to be cooled.

[0012] The cutting section / fan spray system includes pipe IX, pipe VII, and pipe VIII. The outlets of pipe IV, pipe V, and pipe VI converge at one point and are connected to pipe IX. A water pump and a three-way ball valve are sequentially installed on pipe IX. The two outlets of the three-way ball valve are connected to pipe VII and pipe VIII, respectively. Pipe VII is connected to the cutting section spray pipe. Pipe IX and pipe VIII are connected to valve block II. Valve block II is connected to the fan spray pipe through pipe II.

[0013] The drilling rig slag removal and dust removal system includes pipeline X. The outlets of pipeline X and pipeline II converge at one point and are connected to the drilling rig slag removal and dust removal pipeline.

[0014] The recirculation cooling system includes a recirculation pipeline and a cooling module installed on the recirculation pipeline. The recirculation pipeline connects valve block two and valve block one to realize the recycling of water.

[0015] Furthermore, the water inlet pipeline is sequentially equipped with an inlet filter, a ball valve, a pressure gauge, and a backwash filter to facilitate control of the water inlet flow, monitoring of the water inlet pressure, and filtration of the inlet water.

[0016] Furthermore, pipeline I is connected to a hydraulic oil cooler, and one-way valves are respectively installed on pipeline I, pipeline II and pipeline III, and a needle valve is installed on pipeline III.

[0017] Furthermore, pipeline IV is sequentially connected to a gear oil cooler and a cutting motor, and a flow sensor is installed on pipeline IV downstream of the cutting motor; a flow sensor and a needle valve are also installed on pipeline V and pipeline VI. This facilitates monitoring and controlling the pipeline flow.

[0018] Furthermore, a pressure gauge, a pressure sensor, a water pump, a pressure sensor, and an accumulator are sequentially installed at the front end of the pipeline IX. An overflow valve and a pressure gauge are also installed on the pipeline IX downstream of the water pump.

[0019] Furthermore, an overflow valve is provided on the valve block two.

[0020] Furthermore, one-way valves are respectively installed on pipeline X and pipeline II; one-way valves are installed on the return pipeline, and the heat dissipation module on the return pipeline is an air-cooled radiator or a Freon refrigerant, with one-way valves connected in parallel between the liquid inlet and outlet of the heat dissipation module.

[0021] The beneficial effects of this utility model through the above technical solution are:

[0022] This invention introduces an external water source into the fluid regeneration loop system of the entire tunneling and anchoring machine through an external water inlet pipeline system. During the introduction, the system can control the flow of water, monitor the water pressure, and perform secondary filtration of the water to avoid clogging the pipeline and extend the service life of subsequent water-using equipment.

[0023] This invention introduces water from an external water inlet system, which flows through the motor cooling system. The water is then cooled via three branch pipes IV, V, and VI to cool key components of the cutting motor, gear oil cooler, oil pump motor, and conveyor motor, ensuring normal operation. The water then converges into pipe IX and is pumped to the cutting section / fan spray system. The hot water is then used for dust suppression, achieving water reuse and preventing significant water waste.

[0024] This invention utilizes a three-way ball valve in the cutting section / fan spray system to change the water flow direction, directing it either to the cutting section spray pipe or the fan spray pipe for dust suppression during tunneling and anchoring machine operations. A portion of the high-temperature water enters pipe X, mixes with the low-temperature water in pipe II, and is then supplied to the drilling rig's slag removal and dust suppression system. Another portion of the high-temperature water is cooled by a heat dissipation module and returned to the motor cooling system, achieving water recycling and reducing total water consumption. Attached Figure Description

[0025] Figure 1 This is a system flow diagram of a fluid regeneration circuit system applied to a tunneling and anchoring machine according to this utility model.

[0026] Figure 2 This utility model relates to a fluid regeneration circuit system applied to a tunneling and anchoring machine. Figure 1 Schematic diagram of the external water inlet pipeline system and motor cooling system.

[0027] Figure 3 This utility model relates to a fluid regeneration circuit system applied to a tunneling and anchoring machine. Figure 1 Schematic diagram of the cutting section / fan spray system, drilling rig slag removal and dust removal system, and recirculation heat dissipation system.

[0028] The attached diagram is labeled as follows: 1. Inlet water filter, 2. Ball valve, 3. Pressure gauge, 4. Backwash filter, 5. Hydraulic oil cooler, 6. Check valve, 7. Return pipeline, 8. Gear oil cooler, 9. Cutting motor, 10. Oil pump motor, 11. Conveyor motor, 12. Flow sensor, 13. Needle valve, 14. Pressure sensor, 15. Water pump, 16. Overflow valve I, 17. Accumulator, 18. Three-way ball valve, 19. Overflow valve II, 20. Valve block I, 21. Heat dissipation module, 22. Pipeline IV, 23. Pipeline V, 24. Pipeline VI, 25. Pipeline IX, 26. Pipeline VII, 27. Pipeline VIII, 28. Valve block II, 29. Cutting section spray pipeline, 30. Pipeline II, 31. Fan spray pipeline, 32. Drilling rig slag discharge and dust removal pipeline, 33. Inlet water pipeline, 34. Pipeline I, 35. Pipeline II, 36. Pipeline III, 37. Pipeline X. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0030] like Figures 1-3 As shown, a fluid regeneration loop system for a roadheader / anchor machine includes an external water inlet pipeline system, a motor cooling system, a cutting section / fan spray system, a drilling rig slag removal and dust suppression system, and a return flow heat dissipation system. These systems are interconnected via pipelines. Liquid flows through the external water inlet pipeline system, motor cooling system, cutting section / fan spray system, drilling rig slag removal and dust suppression system, and return flow heat dissipation system, circulating sequentially to achieve heat dissipation and dust suppression, thus ensuring the normal operation of the roadheader / anchor machine.

[0031] The external water inlet pipeline system includes an inlet pipeline 33 and pipelines I34, II35, and III36 connected in parallel to the outlet of the inlet pipeline 33. The inlet pipeline 33 is connected to an external water source, which can be a water supply pipeline. In order to smoothly deliver water to the inlet pipeline 33, a water supply pump is installed on the water supply pipeline to pump the water source into the inlet pipeline 33.

[0032] An inlet water filter 1, a ball valve 2, a pressure gauge 3, and a backwash filter 4 are sequentially installed on the inlet water pipe 33. The inlet water filter 1 performs preliminary filtration of the water flow; the ball valve 2 controls the opening and closing of the inlet water pipe 33; the pressure gauge 3 directly displays the water pressure within the inlet water pipe 33; and the backwash filter 4 facilitates fine filtration of the water flow. The external water inlet pipe system is connected to an external water source through the inlet water filter 1, and passes through the ball valve 2, pressure gauge 3, and backwash filter 4 in sequence.

[0033] After passing through the backwash filter 4, the water flows into pipelines I34, II35, and III36 respectively. One-way valves 6 are installed on each of these pipelines to prevent backflow. Pipeline I34 connects to the hydraulic oil cooler 5, which is an existing feature on the roadheader. High-temperature oil flows through the hydraulic oil cooler 5, and water flows through it simultaneously, resulting in efficient heat exchange and lowering the oil temperature to ensure continuous and normal operation of the equipment.

[0034] Both pipe I34 and pipe III36 have valve block 20 connected to their outlets. Water in pipe I34 flows sequentially through hydraulic oil cooler 5 and check valve 6 before entering valve block 20. Pipe III36 is equipped with needle valve 13. Water in pipe III36 flows through needle valve 13 before entering valve block 20. Needle valve 13 is used to cut off the pipeline or regulate the flow rate.

[0035] The operation of the external water inlet pipeline system is as follows: The inlet filter 1 is connected to the external water supply pipeline, limiting the water flow rate to no less than 130 L / min, and the total inlet pressure to 8-20 bar. First, coarse filtration occurs, followed by flow through ball valve 2. Ball valve 2 acts as the main water inlet switch for the integrated tunneling and anchoring machine's fluid regeneration circuit system and is generally in a normally open state. After the inlet pressure is detected by pressure gauge 3, the water flows through backwash filter 4 for fine filtration.

[0036] After passing through the backwash filter 4, the water is divided into three paths: pipeline I34, pipeline II35, and pipeline III36. In pipeline I34, the water passes through the backwash filter 4, then through the hydraulic oil cooler 5 to cool the hydraulic oil, and finally flows into valve block 20 after passing through the check valve 6. The other path is pipeline III36, where water passes through the backwash filter 4, then through the stainless steel needle valve 13 and the check valve 6 before entering valve block 20. The purpose of pipeline III36 is to increase the water inflow; the stainless steel needle valve 13 can be adjusted to control the water inflow as needed. The check valve 6 in both pipelines I34 and III36 prevents backflow.

[0037] The motor cooling system includes pipes IV22, V23, and VI24, which are respectively connected to valve block 20. These three pipes cool the cutting motor 9, gear oil cooler 8, oil pump motor 10, and two conveyor motors 11. Pipe IV22 connects the gear oil cooler 8 and the cutting motor 9 in series; that is, pipe IV22 sequentially connects the gear oil cooler 8 and the cutting motor 9. The gear oil cooler 8 and the cutting motor 9 are existing facilities on the roadheader. The water in pipe IV22 flows sequentially through the gear oil cooler 8 and the cutting motor 9, cooling the gear oil and the cutting motor 9. A flow sensor 12 is installed on pipe IV22 downstream of the cutting motor 9 to detect the water flow rate in pipe IV22.

[0038] Pipeline V23 connects to the oil pump motor 10 and is used to cool the oil pump motor 10. Pipeline VI24 connects to two conveyor motors 11 and is used to cool the conveyor motors 11. A flow sensor 12 and a needle valve 13 are also installed on pipelines V23 and VI24. This allows for the detection of the current flow rate in the pipelines and the control of pipeline on / off states and flow rate regulation. The outlets of pipelines IV22, V23, and VI24 converge at a single point.

[0039] The motor cooling system operates as follows: Water flows out from valve block 20 and splits into three streams: IV22, V23, and VI24. Water flowing into IV22 passes sequentially through gear oil cooler 8 and cutting motor 9, cooling both the gear oil and the cutting motor 9, before the flow rate is detected by flow sensor 12. Water flowing into V23 is cooled by oil pump motor 10 and then flows sequentially through flow sensor 12 and stainless steel needle valve 13. Water flowing into VI24 is cooled by the two conveyor motors 11 on the left and right sides, before flowing sequentially through flow sensor 12 and stainless steel needle valve 13. The stainless steel needle valve 13 in V23 and VI24 regulates the water flow rate. By adjusting the stainless steel needle valve 13 in V23 and VI24, the water flow rate in V23 is maintained at approximately 40 L / min, in VI24 at approximately 18 L / min, and in IV22 at approximately 10 L / min.

[0040] The cutting section / fan spray system includes pipes IX25, VII26, and VIII27. The outlets of pipes IV22, V23, and VI24 converge at one point and connect to pipe IX25. The water flows uniformly into pipe IX25. Since the water temperature rises after flowing through the motor cooling system, the water flowing into pipe IX25 at this time has a certain temperature.

[0041] A water pump 15 and a three-way ball valve 18 are sequentially installed on pipeline IX25. The water pump 15 is located at the front end of pipeline IX25. Simultaneously, a pressure gauge 3, a pressure sensor 14, the water pump 15, the pressure sensor 14, and an accumulator 17 are sequentially installed at the front end of pipeline IX25. An overflow valve 16 and pressure gauge 3 are also installed on pipeline IX25 downstream of the water pump 15. This allows for the detection and display of water pressure before and after the water pump 15. An overflow valve 16 is connected in parallel at the bypass point of the water pump 15. To prevent excessive water pressure, the overflow valve 16 is set to a pressure of 40 Bar. When the water pressure reaches 40 Bar, water overflows into the outside along the pipeline.

[0042] The three-way ball valve 18 is located at the rear end of pipeline IX25, and the outlet of pipeline IX25 is connected to valve block 28. The two outlets of the three-way ball valve 18 are connected to pipeline VII26 and pipeline VIII27 respectively, and the water flow to pipeline VII26 or pipeline VIII27 is controlled by the three-way ball valve 18. Among them, pipeline VII26 is connected to the cutting section spray pipeline 29, which is an existing facility on the roadheader, and the cutting section spray pipeline 29 has two lines.

[0043] Pipeline VIII27 outlet is connected to valve block 28, which is equipped with overflow valve 29. Valve block 28 is connected to ventilation fan spray pipe 31 via pipeline 2 30. Ventilation fan spray pipe 31 is an existing facility on the tunneling and anchoring machine.

[0044] The operation of the cutting section / fan spray system is as follows: After the water pump 15 starts, the water from the confluence of pipes IV22, V23, and VI24, pumped by the water pump 15, passes sequentially through pressure gauge 3, pressure sensor 14, water pump 15, pressure sensor 14, accumulator 17, and pressure gauge 3. The water flows along pipe IX25, one path passing through needle valve 13 to valve block 28, and the other path entering three-way ball valve 18. When three-way ball valve 18 is switched to spray + circulation, the water flows to pipe VII26 and forms a cutting section spray through the cutting section spray pipe 29. When three-way ball valve 18 is switched to circulation, the water is guided through pipe VIII27 to valve block 28. Then, a portion of the water flowing from pipes VIII27 and IX25 to valve block 28 flows through pipe 230 to fan spray pipe 31, realizing fan spray.

[0045] The drilling rig slag removal and dust removal system includes pipe X37. The outlets of pipe X37 and pipe II35 converge at a single point and connect to the drilling rig slag removal and dust removal pipe 32. In other words, the high-temperature water flow in pipe X37 and the normal water flow in pipe II35 converge and then flow into the drilling rig slag removal and dust removal pipe 32. One-way valves 6 are installed on both pipe X37 and pipe II35. The drilling rig slag removal and dust removal pipe 32 is used for flushing, slag removal, and dust removal of the drilling and anchoring system on the roadheader. The drilling rig slag removal and dust removal pipe 32 is an existing pipe system.

[0046] The working process of the drilling rig slag removal and dust removal system is as follows: Water flowing from valve block 28 flows into pipeline X37 through check valve 6, merges with water in pipeline II35, and enters the drilling and anchoring system. In the drilling rig slag removal and dust removal pipeline 32, it sequentially passes through check valve 6, stainless steel needle valve 13, and ball valve 2. Slag removal is achieved by manually opening ball valve 2. The water flow rate of the anchor drilling rig can be adjusted according to actual conditions via stainless steel needle valve 13. Specifically, the opening pressure of check valve 6 on pipeline II35 is greater than the opening pressure of check valve 6 on pipeline X37, allowing water from pipeline X37 to be used first for anchor bolt slag removal.

[0047] The recirculation cooling system is used for the heat dissipation and reuse of high-temperature water flow. The recirculation cooling system includes a recirculation pipe 7 and a heat dissipation module 21 installed on the recirculation pipe 7. The recirculation pipe 7 connects valve block two 28 and valve block one 20. Water flow in valve block two 28 is introduced into valve block one 20 through the recirculation pipe 7. The heat dissipation module 21 on the recirculation pipe 7 is an air-cooled radiator or a Freon refrigerant, which can dissipate heat and cool the water flow, allowing the water to be recirculated into the motor cooling system. A one-way valve 6 is installed on the recirculation pipe 7, meaning a one-way valve 6 is connected in parallel between the liquid inlet and outlet of the heat dissipation module 21.

[0048] The operation of the return flow radiator system is as follows: part of the water flowing into valve block 28 is used for fan spraying and anchor drilling rig slag removal and dust removal, and the remaining water flows back to valve block 20 through heat dissipation module 21 and one-way valve 6. An overflow valve 19 is installed at valve block 28. The pressure of the overflow valve 19 is set to 20 Bar, and its function is to prevent damage to heat dissipation module 21 due to excessive water pressure.

[0049] Specifically, a one-way valve 6 is connected in parallel at the heat dissipation module 21. The one-way valve 6 is set with a certain opening pressure to prevent water from being blocked after the heat dissipation module 21 is blocked. The total water inlet becomes hot water after passing through the motor cooling system. After passing through the heat dissipation module 21, it can be cooled down. The cooled water enters the valve block 20 and merges with the cold water in the external water inlet pipeline system to carry out the next cycle, thereby realizing the internal circulation of water and solving the problems of excessive external drainage and total water inlet of the tunneling and anchoring machine.

[0050] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A fluid regeneration loop system applied to a tunneling and anchoring machine, characterized in that, This includes an external water inlet pipeline system, a motor cooling system, a cutting section / fan spray system, a drilling rig slag removal and dust removal system, and a recirculation heat dissipation system; The external water inlet pipeline system includes a water inlet pipeline (33), a pipeline I (34), a pipeline II (35) and a pipeline III (36) connected in parallel to the outlet of the water inlet pipeline (33), and the outlets of the pipeline I (34) and the pipeline III (36) are both connected to a valve block I (20). The motor cooling system includes pipes IV (22), V (23) and VI (24) that are respectively connected to valve block 1 (20). Pipe IV (22) connects the gear oil cooler (8) and the cutting motor (9) in series. Pipe V (23) is connected to the oil pump motor (10). Pipe VI (24) is connected to the two conveyor motors (11). The cutting section / fan spray system includes pipe IX (25), pipe VII (26) and pipe VIII (27). The outlets of pipe IV (22), pipe V (23) and pipe VI (24) converge at one point and are connected to pipe IX (25). A water pump (15) and a three-way ball valve (18) are installed on pipe IX (25) in sequence. The two outlets of the three-way ball valve (18) are connected to pipe VII (26) and pipe VIII (27) respectively. Pipe VII (26) is connected to the cutting section spray pipe (29). Pipe IX (25) and pipe VIII (27) are connected to valve block two (28). Valve block two (28) is connected to the fan spray pipe (31) through pipe two (30). The drilling rig slag removal and dust removal system includes pipeline X (37), and the outlets of pipeline X (37) and pipeline II (35) converge at one point and are connected to the drilling rig slag removal and dust removal pipeline (32); The recirculation cooling system includes a recirculation pipe (7) and a cooling module (21) installed on the recirculation pipe (7). The recirculation pipe (7) connects valve block two (28) and valve block one (20).

2. The fluid regeneration loop system applied to a tunneling and anchoring machine according to claim 1, characterized in that, The inlet pipe (33) is sequentially equipped with an inlet filter (1), a ball valve (2), a pressure gauge (3), and a backwash filter (4).

3. The fluid regeneration loop system applied to a tunneling and anchoring machine according to claim 2, characterized in that, Pipeline I (34) is connected to hydraulic oil cooler (5). One-way valves (6) are respectively installed on pipeline I (34), pipeline II (35) and pipeline III (36). A needle valve (13) is installed on pipeline III (36).

4. The fluid regeneration loop system applied to a tunneling and anchoring machine according to claim 1, characterized in that, Pipeline IV (22) is connected in sequence to a gear oil cooler (8) and a cutting motor (9). A flow sensor (12) is installed on pipeline IV (22) behind the cutting motor (9). A flow sensor (12) and a needle valve (13) are also installed on pipeline V (23). A flow sensor (12) and a needle valve (13) are also installed on pipeline VI (24).

5. A fluid regeneration loop system for a tunneling and anchoring machine according to claim 1, characterized in that, The front end of the pipeline IX (25) is provided with a pressure gauge (3), a pressure sensor (14), the water pump (15), the pressure sensor (14) and the accumulator (17). The pipeline IX (25) behind the water pump (15) is also provided with an overflow valve (16) and a pressure gauge (3).

6. A fluid regeneration loop system for a tunneling and anchoring machine according to claim 5, characterized in that, An overflow valve (19) is provided on the valve block two (28).

7. A fluid regeneration loop system for a tunneling and anchoring machine according to claim 1, characterized in that, One-way valves (6) are respectively installed on pipeline X (37) and pipeline II (35); one-way valves (6) are installed on the return pipeline (7), and the heat dissipation module (21) on the return pipeline (7) is an air-cooled heat sink or a Freon cooler, and one-way valves (6) are connected in parallel between the liquid inlet and outlet of the heat dissipation module (21).

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