A high-efficiency laser-flame composite cutting head cooling system and method

Abstract

The present invention relates to the field of laser cutting head cooling technology, and in particular to a high-efficiency laser-flame composite cutting head cooling system and method, comprising a cooling member with an organic combination of air cooling and water cooling arranged between a protective mirror device and a cutting head, the cooling member comprising a water cooling component arranged along one side of the inner part of the protective mirror device, the action part of the water cooling component extending to the cutting head, and reflux forming a cycle at the cutting head, the cooling member also comprising an air cooling component starting from the front end of the protective mirror device and extending to the cutting head; a high-efficiency cooling environment is formed here by utilizing the combined effects of water cooling and air cooling, the water cooling component provides a long-term and balanced heat dissipation mode, and the air cooling component provides a short-term and intense heat dissipation mode, and reasonable use of the characteristics of both can make the heat dissipation process for laser emission more reasonable.

Description

Technical Field

[0001] The present invention relates to the field of laser cutting head cooling technology, and in particular to a high-efficiency laser-flame composite cutting head cooling system and method. Background Art

[0002] Laser cutting machines use laser beams to cut workpieces. The main principle is to use the energy of the laser to concentrate it into a high-density beam in the form of light. The beam is transmitted to the surface of the workpiece to generate enough energy to melt the material to achieve the purpose of cutting and engraving. In recent years, laser cutting has been widely used in the manufacturing industry.

[0003] The laser cutting head is an important component of the laser cutting machine. Currently, the laser cutting heads on the market are mainly concentrated in medium and low power. The greater the power of the laser cutting head, the thickness of the corresponding metal plate that can be cut will be greater. Therefore, the market demand for high-power laser cutting heads is increasing. However, the greater the power of the laser cutting head, the more serious the heating of the lens inside the laser cutting head will be. In actual production and processing, when cutting thicker carbon steel and high-reflective materials such as copper and aluminum; the temperature of the cutting head nozzle, ceramic ring, plate and sensor will gradually increase; when the temperature of the plate and nozzle is too high, the cutting head ceramic ring will burn out, affecting the normal operation of the cutting head.

[0004] Therefore, an efficient cooling system is indispensable in the laser cutting head. However, the existing cooling system for the laser cutting head still has the following defects:

[0005] 1. The cooling method is single and the range of action is small, which can only adapt to medium and low power laser cutting work;

[0006] 2. The cooling pipeline is not designed reasonably, and the heat transfer in the fluid and solid is not effectively combined (i.e., the conjugate heat transfer effect), resulting in low heat exchange efficiency of the cooling system. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In view of the fact that the cooling system of the above-mentioned existing laser cutting head has a single cooling method and a small range of action, it can only adapt to medium and low power laser cutting work, and the cooling pipeline is not reasonably designed and does not effectively combine the heat transfer in the fluid and solid, resulting in a low heat exchange efficiency of the cooling system, the present invention is proposed.

[0009] Therefore, one of the objects of the present invention is to provide a high-efficiency laser-flame hybrid cutting head cooling system and method.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-efficiency laser-flame composite cutting head cooling system, comprising an optical fiber connector, a horizontal adjustment device, a focusing device, a protective mirror device and a cutting head, wherein the optical fiber connector, the horizontal adjustment device, the focusing device, the protective mirror device and the cutting head are connected in sequence from top to bottom, and the axial centers are located on the same axis, a cooling member having an organic combination of air cooling and water cooling is arranged between the protective mirror device and the cutting head, the cooling member comprises a water cooling component arranged along one side of the interior of the protective mirror device, the action part of the water cooling component extends to the cutting head, and refluxes at the cutting head to form a cycle, the cooling member also comprises an air cooling component starting from the front end of the protective mirror device and extending to the cutting head, the flow channel of the air cooling component is in a gathered shape that fits the laser emission path, a connector aligned with the axis of the laser emission path is arranged at the connection between the air cooling component and the cutting head, a ceramic ring is sleeved on the cutting head, a circulation cavity is opened in the protective mirror device, one end of the circulation cavity is connected to the water cooling component, and the other end is in close contact with the ceramic ring.

[0011] As a preferred solution of the high-efficiency laser-flame composite cutting head cooling system described in the present invention, the water cooling component includes a water inlet joint, a water inlet manifold, a water outlet joint and a water outlet manifold. A water inlet joint is fixed on one side of the tail end of the protective mirror device, and a water outlet joint is fixed on the other side. The protective mirror device is symmetrically penetrated by a water inlet manifold and a water outlet manifold. The water inlet manifold and the water outlet manifold are both connected to a circulation cavity. The circulation cavity is in a C-shaped circular ring. The water inlet manifold is connected to the water inlet joint, and the water outlet manifold is connected to the water outlet joint.

[0012] As a preferred solution of the high-efficiency laser-flame composite cutting head cooling system described in the present invention, the water cooling component also includes an auxiliary joint and an auxiliary manifold, an auxiliary manifold is provided on the side of the protective mirror device close to the water outlet joint, the auxiliary manifold pipeline is arranged vertically to the laser emission path, and the auxiliary manifold is connected to the outside of the auxiliary manifold with an auxiliary joint.

[0013] As a preferred solution of the high-efficiency laser-flame composite cutting head cooling system described in the present invention, the air-cooling component includes an air inlet connector, an air inlet manifold, an air outlet connector and an air outlet manifold, and an air inlet manifold and an air outlet manifold are provided on the opposite side of the protective mirror device and the action end of the water-cooling component. The air inlet manifold is connected to the air inlet connector, and the air outlet manifold is connected to the air outlet connector. The air inlet manifold and the air outlet manifold are both connected to a connecting head, and a guide hole for gas exchange between the air inlet manifold and the air outlet manifold is provided on the connecting head.

[0014] As a preferred solution of the high-efficiency laser-flame composite cutting head cooling system described in the present invention, the joint is in a multi-level frustum shape, and a circular cavity with gradually increasing diameter is formed at the connection with the air cooling component, and the diameter of the cavity connected to the intake manifold is larger than that of the cavity connected to the outlet manifold.

[0015] As a preferred solution of the high-efficiency laser-flame composite cutting head cooling system of the present invention, the gas medium passing through the air-cooling component is air-conditioning cold air.

[0016] As a preferred solution of the high-efficiency laser-flame composite cutting head cooling system of the present invention, the ceramic ring is in a C-shape which is the same size as the circulation cavity, and the two ends of the ceramic ring are respectively aligned with the ends of the water inlet manifold and the air outlet manifold.

[0017] The beneficial effects of this high-efficiency laser-flame composite cutting head cooling system are:

[0018] 1. The protective mirror device and the cutting head are the parts closest to the workpiece. They are in a high temperature environment for a long time during the processing. Parts such as lenses and sensors are easily damaged by high temperature. The present invention forms a high-efficiency cooling environment here by combining water cooling with air cooling. The water cooling component provides a long-term and balanced heat dissipation method, and the air cooling component provides a short-term and drastic heat dissipation method. Reasonable use of the characteristics of both can make the heat dissipation process for laser emission more reasonable.

[0019] 2. Before water cooling, a certain amount of pre-cooling treatment is implemented to reduce the temperature loss of water when it enters the middle section, so that the heat exchange between water and the emitter is more sufficient. The initial and end ends can be regarded as solid heat transfer, and the middle end as liquid heat transfer. The conduction in the two and the convection in the surrounding fluid (water flow in the middle end) are optimized to form a conjugate heat transfer effect.

[0020] Another object of the present invention is to provide an application method of a high-efficiency laser-flame composite cutting head cooling system, comprising the above-mentioned high-efficiency laser-flame composite cutting head cooling system, and the following steps:

[0021] 1) Cooling water is introduced from the water inlet joint, flows along the water inlet manifold to the circulation chamber, and after filling the circulation chamber, it is directed to the water outlet manifold and finally discharged from the water outlet joint;

[0022] 2) The air conditioning cold air is introduced from the air inlet joint, enters the air inlet manifold, is enriched at the joint, and then is directed to the air outlet manifold, and finally is discharged from the air outlet joint;

[0023] 3) Cooling water is introduced from the auxiliary joint and accumulated in the auxiliary manifold. The water cooling effect in the auxiliary manifold fills the cooling gap around the laser emission path. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the overall decomposition structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the cooling element structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the partial exploded structure of the water cooling component of the present invention.

[0029] Figure 5 This is a schematic diagram of the exploded structure of the air cooling component of the present invention from the first perspective.

[0030] Figure 6 This is a schematic diagram of the exploded structure of the air cooling component of the present invention from a second viewing angle.

[0031] Figure 7 It is a detailed structural diagram of the air cooling component of the present invention.

[0032] Indications in the figure: 1-fiber optic connector; 2-horizontal adjustment device; 3-focusing device; 4-protective mirror device; 5-cutting head; 6-cooling element; 601-water cooling assembly; 601a-water inlet connector; 601b-water inlet manifold; 601c-water outlet connector; 601d-water outlet manifold; 601e-auxiliary connector; 601f-auxiliary manifold; 602-air cooling assembly; 602a-air inlet connector; 602b-air inlet manifold; 602c-air outlet connector; 602d-air outlet manifold; 603-connector; 603a-guide hole; 604-ceramic ring; 605-circulation cavity. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0037] Example 1

[0038] Reference Figure 1-Figure 2 , which is the first embodiment of the present invention, provides a high-efficiency laser-flame composite cutting head cooling system, including fixed components, including an optical fiber connector, a horizontal adjustment device, a focusing device, a protective mirror device and a cutting head, wherein the optical fiber connector, the horizontal adjustment device, the focusing device, the protective mirror device and the cutting head are connected in sequence from top to bottom, and the axial centers are located on the same axis.

[0039] The optical fiber connector is used to connect to the optical fiber output unit of the laser generator to receive laser. Since the received laser is divergent light, the horizontal adjustment device is needed to adjust the incident light angle, and the divergent laser is converted into parallel laser through the collimator lens installed inside the horizontal adjustment device before it can continue to be used. The adjusted parallel laser passes through the focusing lens in the focusing device again to reach the cutting surface; in order to obtain the best cutting effect, the focusing knob on the focusing device can be rotated to adjust to the most suitable focus according to the thickness of the plate. The protective mirror device is used to isolate the outside world from the optical path inside the cutting head, ensure the sealing of the optical path, prevent dust and impurities from entering the optical path, and extend the service life of the entire optical fiber laser cutting head. A sensor is installed on the cutting head, and the sensor connector is connected to the sensor signal processing circuit and the linear drive control circuit, which can keep the distance between the cutting head and the workpiece surface stable for a long time and reliably, so as to obtain the best cutting quality guarantee.

[0040] On the basis of the above, a cooling member with an organic combination of air cooling and water cooling is arranged between the protective mirror device and the cutting head, and the cooling member includes a water cooling component arranged along one side of the interior of the protective mirror device, and the action part of the water cooling component extends to the cutting head, and refluxes at the cutting head to form a circulation, and the cooling member also includes an air cooling component starting from the front end of the protective mirror device and extending to the cutting head, and the flow channel of the air cooling component is in a gathered shape that fits the laser emission path, and a connector aligned with the axis of the laser emission path is provided at the connection between the air cooling component and the cutting head, a ceramic ring is provided on the cutting head, and a circulation cavity is opened in the protective mirror device, one end of the circulation cavity is connected to the water cooling component, and the other end is in close contact with the ceramic ring.

[0041] The protective mirror device and the cutting head are the parts closest to the workpiece and are in a high temperature environment for a long time during the processing. Parts such as the lenses and sensors therein are easily damaged by high temperature. The present invention utilizes the combination of water cooling and air cooling to form a highly efficient cooling environment here.

[0042] Example 2

[0043] Reference Figure 1-7 , which is the second embodiment of the present invention, further based on the previous embodiment: the water cooling component includes a water inlet joint, a water inlet manifold, a water outlet joint and a water outlet manifold. A water inlet joint is fixed on one side of the tail end of the protective mirror device, and a water outlet joint is fixed on the other side. The protective mirror device is symmetrically penetrated by a water inlet manifold and a water outlet manifold. The water inlet manifold and the water outlet manifold are both connected to the circulation cavity. The circulation cavity is in a C-shaped annular shape. The water inlet manifold is connected to the water inlet joint, and the water outlet manifold is connected to the water outlet joint. During operation, cooling water is introduced from the water inlet joint, flows along the water inlet manifold to the circulation cavity, and is diverted to the water outlet manifold after filling the circulation cavity, and finally discharged from the water outlet joint.

[0044] The air cooling component includes an air intake connector, an air intake manifold, an air outlet connector and an air outlet manifold. An air intake manifold and an air outlet manifold are provided on the opposite side of the protective mirror device and the working end of the water cooling component. The air intake manifold is connected to the air intake connector, and the air outlet manifold is connected to the air outlet connector. Both the air intake manifold and the air outlet manifold are connected to a connector. A guide hole for gas exchange between the air intake manifold and the air outlet manifold is provided on the connector. Similar to the flow of cooling water, air-conditioning cold air is introduced from the air intake connector, enters the air intake manifold, is enriched at the connector, and then is guided to the air outlet manifold, and finally discharged from the air outlet connector.

[0045] The following will further explain the above details and the effects of its specific implementation:

[0046] ① First, the water cooling and air cooling channels are placed on both sides of the laser emission channel. The water cooling stroke is obviously longer than the air cooling stroke. This is set according to the different properties of the two media. The air cooling flow rate is fast, and the short-range channel can increase the frequency of heat exchange. The water cooling flow rate is slow, and the cooling depends more on the heat exchange between itself and the heating element. In this way, when the contact area between water and the heating element is larger, the heat dissipation effect is better. In short, the water cooling component provides a long-term and balanced heat dissipation method, and the air cooling component provides a short-term and drastic heat dissipation method. Reasonable use of the characteristics of both can make the heat dissipation process for laser emission more reasonable.

[0047] ② In the design of the flow channel of the water cooling component, refer to Figure 3 It can be clearly seen that the middle end of the water flow is parallel to the laser emission channel, while the starting end and the end end are arranged vertically, which is equivalent to achieving a certain pre-cooling treatment before water cooling and heat dissipation, so that the temperature loss of water when entering the middle section is reduced, and the heat exchange effect between the water and the emitter is more sufficient. The initial end and the end end can be regarded as solid heat transfer, and the middle end is liquid heat transfer. The conduction in the two and the convection in the surrounding fluid (water flow at the middle end) are optimized to form a conjugate heat transfer effect. In order to further enhance this effect, the water cooling component also includes an auxiliary joint and an auxiliary manifold. The protective mirror device is provided with an auxiliary manifold on the side close to the water outlet joint. The auxiliary manifold pipeline is arranged vertically with the laser emission path. The auxiliary manifold is connected to the outside of the auxiliary manifold with an auxiliary joint. The water cooling effect in the auxiliary manifold fills the cooling gap around the laser emission path to prevent heat concentration and make the heat dissipation process more uniform.

[0048] ③ In the design of the flow channel of the air-cooled component, refer to Figure 5 , 6 7. It can be clearly seen that the joint is in a multi-level truncated cone shape, and a circular cavity with a gradually increasing diameter is formed at the connection with the air cooling component. The diameter of the cavity connected to the intake manifold is larger than that of the cavity connected to the outlet manifold. The change in the diameter of the cavity provides a larger contact area for the flow of gas. In addition, the air cooling effect is closer to the working end of the laser cutting. Here, the laser will converge to a point to achieve cutting. The higher the degree of convergence, the higher the power of the laser work. To match this, the air duct for heat dissipation here is arranged in a shape that converges toward the center. The more concentrated the place, the higher the heat dissipation efficiency, which adapts to the working characteristics of the laser.

[0049] ④ In summary, the air-cooled components and the water-cooled components have one thing in common, that is, a cavity structure is set at the circulating part to increase the accumulation of the fluid here, which makes the heat exchange rate at both ends of the entire heat dissipation part greater than that in the middle part. The temperature field and heat flux are continuous at the fluid / solid interface. However, in the moving fluid, the temperature field will change rapidly: near the solid, the temperature of the fluid is close to the solid; but far away from the interface, the fluid temperature is close to the temperature of the inlet or surrounding fluid. The benefit of the accumulation at both ends is to keep the temperature changes of the two fluids uniform under long-term working conditions, providing a stable heat dissipation effect.

[0050] Example 3

[0051] Reference Figure 4 , which is the third embodiment of the present invention, based on the above embodiment, this embodiment provides an application method of a high-efficiency laser-flame composite cutting head cooling system, comprising the following steps:

[0052] 1) Cooling water is introduced from the water inlet joint, flows along the water inlet manifold to the circulation chamber, and after filling the circulation chamber, it is directed to the water outlet manifold and finally discharged from the water outlet joint;

[0053] 2) The air conditioning cold air is introduced from the air inlet joint, enters the air inlet manifold, is enriched at the joint, and then is directed to the air outlet manifold, and finally is discharged from the air outlet joint;

[0054] 3) Cooling water is introduced from the auxiliary joint and accumulated in the auxiliary manifold. The water cooling effect in the auxiliary manifold fills the cooling gap around the laser emission path.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-efficiency laser-flame composite cutting head cooling system, comprising: An optical fiber connector (1), a horizontal adjustment device (2), a focusing device (3), a protective mirror device (4) and a cutting head (5), wherein the optical fiber connector (1), the horizontal adjustment device (2), the focusing device (3), the protective mirror device (4) and the cutting head (5) are connected in sequence from top to bottom, with their axial centers located on the same axis, and are characterized in that: A cooling element (6) having an organic combination of air cooling and water cooling is provided between the protective mirror device (4) and the cutting head (5); The cooling member (6) comprises a water cooling component (601) arranged along one side of the interior of the protective mirror device (4), the action part of the water cooling component (601) extending to the cutting head (5) and refluxes at the cutting head (5) to form a circulation, the cooling member (6) further comprises an air cooling component (602) starting from the front end of the protective mirror device (4) and extending to the cutting head (5), the flow channel of the air cooling component (602) presents a converged shape that fits the laser emission path, a connector (603) aligned with the axis of the laser emission path is arranged at the connection between the air cooling component (602) and the cutting head (5), a ceramic ring (604) is sleeved on the cutting head (5), a circulation cavity (605) is opened in the protective mirror device (4), one end of the circulation cavity (605) is connected to the water cooling component (601), and the other end is in close contact with the ceramic ring (604); The water cooling component (601) comprises: a water inlet joint (601a), a water inlet manifold (601b), a water outlet joint (601c) and a water outlet manifold (601d); a water inlet joint (601a) is fixed on one side of the rear end of the protective mirror device (4), and a water outlet joint (601c) is fixed on the other side; a water inlet manifold (601b) and a water outlet manifold (601d) are symmetrically arranged through the protective mirror device (4); the water inlet manifold (601b) and the water outlet manifold (601d) are both connected to a circulation chamber (605); the circulation chamber (605) is in the shape of a C-shaped circular ring; the water inlet manifold (601b) is connected to the water inlet joint (601a), and the water outlet manifold (601d) is connected to the water outlet joint (601c); The water cooling assembly (601) further comprises an auxiliary joint (601e) and an auxiliary manifold (601f); the protective mirror device (4) is provided with an auxiliary manifold (601f) on a side close to the water outlet joint (601c); the auxiliary manifold (601f) pipeline is arranged perpendicular to the laser emission path; the auxiliary manifold (601f) is externally connected to the auxiliary joint (601e); The air cooling component (602) comprises: An air intake connector (602a), an air intake manifold (602b), an air outlet connector (602c) and an air outlet manifold (602d); an air intake manifold (602b) and an air outlet manifold (602d) are provided on opposite sides of the protective mirror device (4) and the working end of the water cooling component (601); the air intake manifold (602b) is communicated with the air intake connector (602a); the air outlet manifold (602d) is communicated with the air outlet connector (602c); the air intake manifold (602b) and the air outlet manifold (602d) are both connected to a connector (603); and a guide hole (603a) is provided on the connector (603) for gas exchange between the air intake manifold (602b) and the air outlet manifold (602d); The connector (603) is in a multi-stage frustum shape, and forms a circular ring-shaped cavity with a gradually increasing diameter at the connection with the air cooling component (602), and the cavity diameter at the connection with the intake manifold (602b) is larger than the cavity diameter at the connection with the outlet manifold (602d).

2. A high-efficiency laser-flame composite cutting head cooling system according to claim 1, characterized in that: The gas medium passing through the air cooling component (602) is air-conditioning cold air.

3. The high-efficiency laser-flame composite cutting head cooling system according to claim 1, characterized in that: The ceramic ring (604) is in a C-shape that is as large as the circulation chamber (605), and two ends of the ceramic ring (604) are aligned with the ends of the water inlet manifold (601b) and the air outlet manifold (602d) respectively.

4. An application method of the high-efficiency laser-flame composite cutting head cooling system according to any one of claims 1 to 3, characterized in that: The following steps are involved: 1) Cooling water is introduced from the water inlet joint (601a), flows along the water inlet manifold (601b) to the circulation chamber (605), and after filling the circulation chamber (605), is directed to the water outlet manifold (601d), and finally discharged from the water outlet joint (601c); 2) The air conditioning cold air is introduced from the air intake connector (602a), enters the air intake manifold (602b), is enriched at the connector (603), and then is directed to the air outlet manifold (602d), and finally is discharged from the air outlet connector (602c); 3) Cooling water is introduced from the auxiliary joint (601e) and accumulated in the auxiliary manifold (601f). The water cooling effect in the auxiliary manifold (601f) fills the cooling gap around the laser emission path.

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