A cooling liquid heat sink device for a machine tool cooling system

Abstract

The present application relates to the technical field of cooling liquid treatment, in particular to a cooling liquid heat dissipation device for a machine tool cooling system, comprising a low-pressure chamber and a high-pressure chamber, a heat exchange unit is arranged in the middle of the low-pressure chamber, the inside of the low-pressure chamber is provided with a steam area and an atomization area on the upper and lower sides respectively, an atomizer capable of atomizing part of the cooling liquid stored in the atomization area is arranged in the atomization area, and a liquid supply pipe is arranged at the bottom of the low-pressure chamber; by atomizing and low-pressure evaporating part of the cooling liquid, the cooling liquid can absorb heat and exchange heat with the cooling liquid in the heat exchange unit, so that the cooling and heat dissipation treatment of the cooling liquid is realized; this method does not need to rely on other media, is convenient to operate, saves cost, and the atomization treatment can improve the evaporation effect and evaporation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling liquid treatment, in particular to a cooling liquid heat dissipation device for a machine tool cooling system. BACKGROUND

[0002] In modern manufacturing industry, high speed, high precision and high efficiency processing has become the mainstream development trend, and the machining precision and stability of machine tools, as the mother machine of industry, directly determine the quality and production cost of products. In order to achieve this goal, most machine tools are equipped with forced cooling systems, which can cool, lubricate and flush away chips through continuous circulation of cooling liquid, which is crucial to ensure processing quality and prolong tool life.

[0003] However, as numerical control machine tools move towards higher power and higher speed, especially in harsh working conditions such as heavy cutting, dry or semi-dry cutting, a large amount of heat energy is generated in the cutting area. These heat is carried away by the cooling liquid, causing the temperature of the cooling liquid to continue to rise. If it cannot be effectively cooled, the high-temperature cooling liquid will not only cause its lubrication performance to deteriorate and bacteria to deteriorate, but more seriously, it will lose its cooling ability, causing machine tool thermal deformation to intensify, processing precision to be lost, and even causing the risk of early tool damage and batch rejection of workpieces. Therefore, the heat dissipation treatment of the cooling liquid is one of the necessary conditions for maintaining the long-term normal use of the cooling liquid.

[0004] The traditional heat dissipation method is to directly use a fan to blow the cooling liquid for heat dissipation. However, due to the small contact area between the airflow and the cooling liquid, the temperature inside the cooling liquid cannot be reduced in time and effectively, so the heat dissipation effect is poor and cannot meet the requirements of modern industry. SUMMARY

[0005] To solve the above technical problems, the present application provides a cooling liquid heat dissipation device for a machine tool cooling system, which adopts the following specific technical solutions:

[0006] The cooling liquid heat dissipation device for a machine tool cooling system of the present application comprises a low-pressure chamber and a high-pressure chamber, a heat exchange unit is arranged in the middle of the low-pressure chamber, the upper and lower sides of the inside of the low-pressure chamber are respectively a steam zone and an atomization zone, an atomizer capable of atomizing part of the cooling liquid stored in the atomization zone is arranged in the atomization zone, and a liquid supply pipe is arranged at the bottom of the low-pressure chamber.

[0007] A pressurizing pump is arranged on the high-pressure chamber, the input end of the pressurizing pump is in communication with the steam zone, an expansion valve in communication with the atomization zone is arranged on the low-pressure chamber, the input end of the expansion valve is in communication with the high-pressure chamber, and a plurality of air passages for air circulation are formed in the high-pressure chamber.

[0008] Further, the bottom of the low-pressure chamber is communicated with a temporary storage chamber, the atomization area is provided with a sealing disc for sealing the temporary storage chamber, the sealing disc and the temporary storage chamber are connected through a spring, and the liquid supply pipe is communicated with and mounted on the temporary storage chamber.

[0009] Further, a sliding column is slidably inserted into the temporary storage chamber, a through opening is formed in the middle of the sealing disc, the top of the sliding column slides through the through opening and extends into the atomization area, the top of the sliding column is provided with a floating block, and a notch area is formed on the outer wall of the sliding column close to the floating block.

[0010] Further, a liquid pumping pump is arranged at the bottom of the low-pressure chamber, the input end of the liquid pumping pump is communicated with the atomization area, and the liquid pumping pump is used for pumping part of the cooling liquid in the atomization area.

[0011] Further, the heat exchange unit comprises a spiral plate, a spiral area surrounded by the spiral plate is a spiral channel one, a spiral channel two is formed in the spiral plate, spiral openings are formed on the upper and lower sides of the spiral channel two respectively, and the spiral channel two is communicated with a steam area and an atomization area through the two spiral openings respectively.

[0012] Liquid guide pipes communicated with the spiral channel one are arranged on the upper and lower sides of the spiral plate, and the end portions of the two liquid guide pipes extend out of the low-pressure chamber.

[0013] Further, the spiral plate is coaxially arranged with the low-pressure chamber, a plurality of partition discs are arranged on the spiral plate along the axis direction of the low-pressure chamber, the partition discs are connected with the inner wall of the low-pressure chamber, the spiral channel one is separated by the partition discs, one of the two adjacent partition discs is arranged with a liquid guide opening one close to the opening area of the outer side of the spiral plate, and the middle of the other partition disc is arranged with a liquid guide opening two.

[0014] Further, the middle of the partition disc arranged with the liquid guide opening one is arranged with a drainage cone one and a drainage cone two on the upper and lower sides respectively, and a plurality of drainage inclined plates are arranged on the drainage cone one.

[0015] The edge area of the partition disc arranged with the liquid guide opening two is arranged with a drainage arc plate on the upper and lower sides.

[0016] Further, the side wall of the spiral channel one and the side wall of the spiral channel two are densely covered with grooves.

[0017] The beneficial effects of the present application are as follows:

[0018] By atomizing and low-pressure evaporating part of the cooling liquid, heat can be absorbed and heat exchanged with the cooling liquid in the heat exchange unit, so as to realize the cooling and heat dissipation of the cooling liquid. This method does not need to use other media, is convenient to operate, saves cost, and atomization processing can improve the evaporation effect and evaporation efficiency. By using pressurization and flash evaporation, the secondary evaporation of the cooling liquid can be used to cool the cooling liquid in the heat exchange unit again, so as to realize the recycling of the cooling liquid vapor and multi-stage cooling and heat dissipation of the cooling liquid. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a structural schematic diagram of the present application;

[0021] Figure 2 is Figure 1 is a bottom view structural schematic diagram;

[0022] Figure 3 is a low-pressure chamber sectional view structural schematic diagram in the embodiment of the present application;

[0023] Figure 4 is Figure 2 is a sectional view structural schematic diagram of the temporary storage chamber;

[0024] Figure 5 is Figure 3 is a structural schematic diagram of the heat exchange unit;

[0025] Figure 6 is Figure 5 is a sectional view structural schematic diagram of the heat exchange unit;

[0026] Figure 7 is Figure 6 is a structural schematic diagram after removing the groove.

[0027] Reference signs:

[0028] 1, low pressure chamber; 2, high pressure chamber; 3, heat exchange unit; 4, vapor area; 5, atomization area; 6, atomizer; 7, liquid supply pipe; 8, pressure pump; 9, expansion valve; 10, air channel; 11, temporary storage chamber; 12, sealing disc; 13, spring; 14, sliding column; 15, float; 16, notch area; 17, liquid pumping pump; 18, spiral plate; 19, spiral channel 1; 20, spiral channel 2; 21, spiral port; 22, liquid guide pipe; 23, partition disc; 24, liquid guide port 1; 25, liquid guide port 2; 26, drainage cone 1; 27, drainage cone 2; 28, drainage inclined plate; 29, drainage arc plate; 30, groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The present embodiment is written in a progressive manner.

[0032] As shown in FIG. Figures 1 to 7 A cooling liquid heat dissipation device for a machine tool cooling system of the present application comprises a low pressure chamber 1 and a high pressure chamber 2, a heat exchange unit 3 is arranged in the middle of the low pressure chamber 1, the inside of the low pressure chamber 1 is divided into a vapor area 4 and an atomization area 5 at the upper and lower sides respectively, an atomizer 6 capable of atomizing part of the cooling liquid stored in the atomization area 5 is arranged in the atomization area 5, and a liquid supply pipe 7 is arranged at the bottom of the low pressure chamber 1;

[0033] A pressure pump 8 is arranged on the high pressure chamber 2, the input end of the pressure pump 8 is communicated with the vapor area 4, an expansion valve 9 communicated with the atomization area 5 is arranged on the low pressure chamber 1, the input end of the expansion valve 9 is communicated with the high pressure chamber 2, and a plurality of air channels 10 for air circulation are formed on the high pressure chamber 2.

[0034] Specifically, the cooling liquid is generally water or a water solution added with oil and emulsifier. When the cooling liquid contacts the tool and the workpiece, the temperature of the tool and the workpiece is transferred to the cooling liquid, so that the temperature of the cooling liquid is increased. The inside of the low-pressure chamber 1 is a low-pressure environment. The atomizer 6 in the low-pressure chamber 1 can atomize the cooling liquid. The atomized liquid droplets are vaporized into steam in the low-pressure environment. In this process, the liquid droplets absorb heat, so that the cooling purpose is achieved. The inside of the high-pressure chamber 2 is a high-pressure environment. The high-pressure chamber 2 generates steam by continuously introducing steam into the high-pressure chamber 2 by using the pressurizing pump 8, so that the amount of steam is increased and the pressure is naturally increased. In this process, the steam is extruded and the temperature of the steam is increased, that is, the steam is changed from a low-pressure normal-temperature state to a high-temperature high-pressure state. The steam in this state has a high saturation degree, so the steam still remains in a gaseous state. Since there are a plurality of air passages 10 on the high-pressure chamber 2, when air flows through the air passages 10, heat exchange occurs between the high temperature in the high-pressure chamber 2 and the air, so that the temperature of the steam in the high-pressure chamber 2 is decreased. At this time, the steam reaches a supersaturated state, that is, the steam is condensed into liquid droplets as the temperature is decreased.

[0035] In use, the pressurizing pump 8 removes the air in the low-pressure chamber 1, so that a negative pressure environment is formed in the low-pressure chamber 1. Part of the cooling liquid is introduced into the atomization area 5 through the liquid supply pipe 7, and part of the cooling liquid is introduced into the heat exchange unit 3. The atomizer 6 in the atomization area 5 atomizes the cooling liquid around it, so that the cooling liquid is changed from a liquid state to an atomized state. The atomized cooling liquid absorbs heat and is changed into steam in the low-pressure environment. At this time, the steam flows through the heat exchange unit 3, so that the heat exchange unit 3 is cooled. The temperature of the cooling liquid in the heat exchange unit 3 is decreased, so that the first cooling process of the cooling liquid is achieved. After the steam absorbs the temperature of the cooling liquid in the heat exchange unit 3, the temperature of the steam is increased and the steam moves to the steam area 4. The pressurizing pump 8 continuously introduces the steam in the steam area 4 into the high-pressure chamber 2. As the amount of steam in the high-pressure chamber 2 is increased, the pressure in the high-pressure chamber 2 is increased. The steam is extruded and the temperature of the steam is increased. At this time, the steam is changed to a high-temperature high-pressure state. The air flowing through the air passages 10 exchanges heat with the steam, so that the temperature of the steam is decreased. That is, the steam reaches a saturation state under a condition that the temperature of the steam is slightly higher than the temperature of the air. The excess steam is condensed into liquid droplets. The steam and the liquid droplets in the high-pressure chamber 2 in a high-pressure state are introduced into the atomization area 5 through the expansion valve 9. At this time, due to the sudden drop of the pressure, part of the liquid droplets flash evaporates, that is, the liquid droplets are changed into steam again. This process also absorbs heat, so that the newly generated steam exchanges heat with the cooling liquid in the heat exchange unit 3 when the steam flows through the heat exchange unit 3, so that the cooling liquid is cooled, and the second cooling process of the cooling liquid is achieved. The steam and the liquid droplets re-entering the atomization area 5 through the expansion valve 9 can mix with the original cooling liquid in the atomization area 5, so that the cooling liquid is conveniently reused.

[0036] It should be pointed out that the atomizer 6 can be an ultrasonic atomizer, an atomizing nozzle or other atomizing structures.

[0037] By atomizing and low-pressure evaporating part of the cooling liquid, heat can be absorbed and exchanged with the cooling liquid in the heat exchange unit 3, thereby realizing the cooling and heat dissipation treatment of the cooling liquid. This method does not need to rely on other media, is convenient to operate, saves cost, and the atomization treatment can improve the evaporation effect and efficiency. By using pressurization and flashing, the secondary evaporation of the cooling liquid can be used to cool the cooling liquid in the heat exchange unit 3 again, thereby realizing the recycling use of the cooling liquid vapor and the multi-stage cooling and heat dissipation of the cooling liquid.

[0038] Further, the low-pressure chamber 1 is communicated with a temporary storage chamber 11 at the bottom, and the atomization area 5 is provided with a sealing disc 12 for sealing the temporary storage chamber 11. The sealing disc 12 is connected with the temporary storage chamber 11 through a spring 13, and the liquid supply pipe 7 is communicated and installed on the temporary storage chamber 11.

[0039] The spring 13 provides elastic tension to the sealing disc 12, so that the sealing disc 12 seals the temporary storage chamber 11. At this time, the cooling liquid can only be introduced into the temporary storage chamber 11 through the liquid supply pipe 7, and cannot enter the atomization area 5. As the internal pressure of the low-pressure chamber 1 continues to drop, when the pressure overcomes the elastic force of the spring 13, the pressure difference on both sides of the sealing disc 12 will push the sealing disc 12 to move upward, and the cooling liquid in the temporary storage chamber 11 will flow into the atomization area 5, thereby facilitating the atomization treatment of the cooling liquid in the atomization area 5 by the atomizer 6. By using this structure, the internal pressure of the low-pressure chamber 1 can be kept negative, so that the atomized cooling liquid can be evaporated and heat-absorbed under low pressure.

[0040] Further, the temporary storage chamber 11 is slidably penetrated by a slide column 14, and a through hole is formed in the middle of the sealing disc 12. The top of the slide column 14 slides through the through hole and extends into the atomization area 5. The top of the slide column 14 is provided with a float 15, and the outer wall of the slide column 14 is provided with a notched area 16 near the float 15.

[0041] The float 15 can float on the liquid surface of the cooling liquid in the atomization area 5. When the sealing disc 12 moves relative to the temporary storage chamber 11, the sealing disc 12 slides relative to the slide column 14. When the liquid surface in the atomization area 5 is low, the float 15 and the slide column 14 are lowered. When part of the notched area 16 moves into the temporary storage chamber 11 through the through hole, the temporary storage chamber 11 can be communicated with the atomization area 5 through the notched area 16. At this time, the cooling liquid in the temporary storage chamber 11 can be automatically supplemented into the atomization area 5, thereby raising the liquid level in the atomization area 5. The raised liquid level will push the float 15 and the slide column 14 to reset, and the notched area 16 will move away from the through hole. At this time, the temporary storage chamber 11 cannot be communicated with the atomization area 5 through the notched area 16, thereby realizing the purpose of controlling the liquid level of the cooling liquid in the atomization area 5.

[0042] Furthermore, a liquid pump 17 is provided at the bottom of the low-pressure chamber 1. The input end of the liquid pump 17 is connected to the atomization zone 5. The liquid pump 17 is used to extract part of the coolant in the atomization zone 5.

[0043] Since some of the coolant on the machine tool is introduced into the atomization zone 5 through the supply pipe 7, and the coolant in the atomization zone 5 is atomized by the atomizer 6, if the atomization zone 5 is not connected to other structures, the coolant in the atomization zone 5 is only used for atomization. However, if the coolant is an aqueous solution with added oil and emulsifier, since the atomizer 6 generally atomizes the coolant more towards water, the oil and emulsifier do not easily pass through the atomizing plate on the atomizer 6, so the oil and emulsifier will accumulate in the atomization zone 5. To solve the above problem, by setting up a liquid pump 17, part of the coolant entering the atomization zone 5 can be atomized, and the remaining part can be discharged by the liquid pump 17. That is, the coolant will be continuously supplied and discharged through the atomization zone 5, which can continuously remove the oil and emulsifier and facilitate continuous replacement of the coolant in the device.

[0044] Furthermore, the heat exchange unit 3 includes a spiral plate 18, the spiral area enclosed by the spiral plate 18 is a spiral channel 19, a spiral channel 20 is opened in the spiral plate 18, and spiral openings 21 are opened on the upper and lower sides of the spiral channel 20 respectively, and the spiral channel 20 is connected to the steam zone 4 and the atomization zone 5 through the two spiral openings 21 respectively.

[0045] Liquid guide pipes 22 connected to the spiral channel 19 are provided on both the upper and lower sides of the spiral plate 18, and the ends of both liquid guide pipes 22 extend beyond the low-pressure chamber 1.

[0046] like Figure 7 As shown, due to the shape characteristics of the spiral plate 18, it can form a spiral channel 19. The spiral channel 20 opened inside the spiral plate 18 also has the same shape as the spiral channel 19. The spiral channel 19 and the spiral channel 20 are isolated from each other. The spiral channel 20 is connected to the steam zone 4 and the atomization zone 5 through two spiral openings 21. The spiral channel 19 is connected to the container storing coolant externally through two liquid guide pipes 22. That is, the coolant to be cooled externally can be introduced into the spiral channel 19 through one liquid guide pipe 22. The coolant in the spiral channel 19 is discharged through the other liquid guide pipe 22. After the atomized coolant enters the spiral channel 20, it will exchange heat with the coolant in the spiral channel 19, so that the mist absorbs heat and turns into steam, realizing the heat absorption and cooling treatment of the coolant. The shape characteristics of the spiral plate 18 provide a larger contact area for heat exchange.

[0047] Furthermore, the spiral plate 18 is coaxially arranged with the low-pressure chamber 1. Along the axial direction of the low-pressure chamber 1, a number of partitions 23 are arranged on the spiral plate 18. The partitions 23 are connected to the inner wall of the low-pressure chamber 1, and the partitions 23 separate the spiral channel 19. One of the partitions 23 is provided with a liquid guide port 24 near the outer opening area of ​​the spiral plate 18, and the other partition 23 is provided with a liquid guide port 25 in the middle.

[0048] External coolant is introduced into a portion of the spiral channel 19 between two adjacent partition plates 23 via a guide pipe 22. At this time, the coolant flows outward along a spiral trajectory on the horizontal plane from the middle area of ​​this portion of the spiral channel 19. When the coolant flows to the outside of the spiral plate 18, it flows downward through the corresponding guide port 24 to another portion of the spiral channel 19 between two adjacent partition plates 23. In this area, the coolant flows from the outside to the middle along a spiral trajectory. When the coolant flows to the middle, it flows downward again through the guide port 25. This process is repeated, so that the coolant to be dissipated forms multiple spiral flow trajectories in the spiral channel 19, and the flow directions of adjacent spiral trajectories are opposite. This can prolong the heat exchange time and path of the coolant and improve the heat exchange effect.

[0049] Furthermore, a first-stage flow cone 26 and a second-stage flow cone 27 are respectively provided on the upper and lower sides of the middle part of the partition plate 23 with a first-stage flow port 24, and a number of flow inclined plates 28 are provided on the first-stage flow cone 26.

[0050] The diaphragm 23, which has a liquid guide port 25, has drainage arc plates 29 on both the upper and lower sides of its edge area.

[0051] When the coolant flows downward through the second guide port 25, it impacts the first guide cone 26 and several guide ramps 28. At this time, the coolant pushes the first guide cone 26 and the guide ramps 28 to rotate. The first guide cone 26 and the guide ramps 28 can guide the coolant, changing it from a vertical flow to a horizontal flow, reducing the impact force when the coolant changes direction. When the coolant flows towards the middle area of ​​the baffle 23, the second guide cone 27 guides the coolant downward, changing it from a horizontal flow to a vertical flow, making it easier for the coolant to pass smoothly through the second guide port 25.

[0052] The guide plate 29 can guide the coolant flowing through the liquid guide port 24, reduce the impact and fluctuation when it changes direction, and improve the stability of coolant flow.

[0053] Furthermore, grooves 30 are densely distributed on the side wall of spiral channel 19 and spiral channel 20.

[0054] By utilizing the densely distributed grooves 30, the heat exchange area between steam and coolant can be increased, thereby improving the heat transfer effect.

[0055] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A coolant heat dissipation device for a machine tool cooling system, characterized in that, It includes a low-pressure chamber and a high-pressure chamber. A heat exchange unit is provided in the middle of the low-pressure chamber. The upper and lower sides of the interior of the low-pressure chamber are a steam zone and an atomization zone, respectively. An atomizer capable of atomizing a portion of the coolant stored in the atomization zone is provided in the atomization zone. A liquid supply pipe is provided at the bottom of the low-pressure chamber. A pressurizing pump is installed on the high-pressure chamber, and the input end of the pressurizing pump is connected to the steam zone. An expansion valve connected to the atomization zone is installed on the low-pressure chamber, and the input end of the expansion valve is connected to the high-pressure chamber. Several air passages for air circulation are opened on the high-pressure chamber. The heat exchange unit includes a spiral plate, the spiral area enclosed by the spiral plate is a spiral channel one, a spiral channel two is opened inside the spiral plate, and spiral openings are opened on the upper and lower sides of the spiral channel two, and the spiral channel two is connected to the steam zone and the atomization zone through the two spiral openings respectively. Liquid guide tubes communicating with the spiral channel are provided on both the upper and lower sides of the spiral plate, and the ends of both liquid guide tubes extend beyond the low-pressure chamber. The spiral plate is coaxially arranged with the low-pressure chamber. Along the axis of the low-pressure chamber, a plurality of partitions are arranged on the spiral plate. The partitions are connected to the inner wall of the low-pressure chamber and the partitions separate the spiral channel. One of the partitions is provided with a liquid guide port one near the outer opening area of ​​the spiral plate, and the other partition is provided with a liquid guide port two in the middle. The diaphragm with a liquid guide port is provided with a first drainage cone and a second drainage cone on the upper and lower sides of the middle part, respectively. The first drainage cone is provided with several drainage inclined plates. The diaphragm edge region with the second liquid guide port is provided with drainage arc plates on both the upper and lower sides; The spiral channel has grooves densely distributed on one side wall and both side walls.

2. A coolant heat dissipation device for a machine tool cooling system according to claim 1, characterized in that, A temporary storage chamber is connected to the bottom of the low-pressure chamber. A sealing plate for sealing the temporary storage chamber is provided in the atomization zone. The sealing plate is connected to the temporary storage chamber by a spring. The liquid supply pipe is connected to and installed on the temporary storage chamber.

3. A coolant heat dissipation device for a machine tool cooling system according to claim 2, characterized in that, A sliding column is slidably inserted into the temporary storage chamber. An opening is provided in the middle of the sealing plate. The top of the sliding column slides through the opening and extends into the atomization zone. A float is provided on the top of the sliding column. A notch is provided on the outer wall of the sliding column near the float.

4. A coolant heat dissipation device for a machine tool cooling system according to claim 1, characterized in that, A liquid pump is installed at the bottom of the low-pressure chamber. The input end of the liquid pump is connected to the atomization zone. The liquid pump is used to extract part of the coolant from the atomization zone.

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