Laser system

Abstract

The invention provides a laser system which comprises a laser, a heat exchanger, a cooling pipeline and a dehumidification structure. The dehumidification structure comprises a shell and a first valve, a first containing cavity and a first opening are formed in the shell, the first containing cavity communicates with the outside of the laser through the first opening, and the first valve is arranged at the first opening to prevent fluid from communicating with the cooling pipeline through the first opening and the heat exchanger. According to the scheme, the dehumidification structure is provided with the first valve, the first valve is opened by adjusting the air pressure in the shell, then fluid (including water vapor or liquid drops) of the laser enters the shell through the first opening to achieve dehumidification, the structure is simple, and control is convenient.

Description

Technical Field

[0001] The present disclosure relates to the field of laser technology, and in particular to a laser system. Background Art

[0002] Since lasers can be used for a variety of operations such as cutting, grinding, and drilling, lasers can be applied to various fields, such as automobile manufacturing, medical treatment, etc. Existing lasers are generally sealed structures for the purpose of waterproofing and dustproofing. However, even if the laser is well sealed, water vapor may invade the laser after long-term use and affect the operation of optical components. In some existing technologies, dehumidification is achieved by adding desiccant to the laser. However, since the desiccant is inactivated after dehumidification and needs to be reactivated, it needs to be replaced frequently to ensure that the humidity in the laser is low, which is very troublesome. Summary of the invention

[0003] In order to overcome at least one of the defects of the prior art described above, an object of the present disclosure is to provide a laser system to remove water vapor in the laser relatively conveniently.

[0004] In a first aspect, the present disclosure provides a laser system, comprising a laser, a heat exchanger, a cooling pipe and a dehumidification structure, wherein the dehumidification structure comprises a shell and a first valve, the shell is formed with a first cavity and a first opening, the first cavity is connected to the laser through the first opening, the first valve is arranged at the first opening to prevent the fluid from passing through the first opening, the heat exchanger is connected to the cooling pipe, when the heat exchanger cools the laser, the refrigerant flows through the cooling pipe to reduce the heat of the coolant in the heat exchanger, and the refrigerant flows through the cooling pipe and cools the shell to reduce the temperature in the shell to adjust the air pressure in the shell, so that the first valve opens to allow the fluid in the laser to enter the shell through the first opening.

[0005] Optionally, a second valve is further included, the shell is formed with a second opening, the second cavity is connected to the outside through the second opening, the second valve is arranged at the second opening to prevent the fluid from passing through the second opening, and the second valve can be opened by adjusting the air pressure in the shell to allow the fluid to pass through the second opening.

[0006] Optionally, the first valve includes a first elastic member and a first sealing member, the first elastic member is used to allow the first sealing member to press against the first opening to close the first opening, wherein the first sealing member can be separated from the first opening to open the first valve by adjusting the air pressure in the shell, wherein the first valve is a one-way valve to prevent fluid from leaving the shell through the first opening to the outside of the shell.

[0007] Optionally, the second valve further includes a second elastic member and a second sealing member, the second elastic member being used to allow the second sealing member to press against the second opening to close the second opening, wherein the second sealing member can be separated from the second opening to open the second valve by adjusting the air pressure in the shell, wherein the second valve is a one-way valve to prevent fluid from entering the shell from outside the shell through the second opening.

[0008] Optionally, by cooling the fluid in the shell, the air pressure in the shell is reduced so that the first valve is opened, and the second valve is in a closed state; by heating the fluid in the shell or allowing the fluid in the shell to return to room temperature, the air pressure in the shell is increased so that the second valve is opened, and the first valve is in a closed state.

[0009] Optionally, the air pressure in the shell is adjusted by adjusting the temperature in the shell so as to separate the first sealing member from the first opening.

[0010] Optionally, the cooling pipe abuts against the shell to adjust the temperature inside the shell.

[0011] Optionally, when the refrigerant flows through the cooling pipe to cool the shell to reduce the temperature inside the shell, the fluid in the shell contracts due to the cold to reduce the air pressure in the shell so that the first valve opens; when the heat exchanger no longer cools the laser, the shell returns to normal temperature, causing the gas in the fluid in the shell to expand to open the second valve, so that the condensed moisture can flow through the second valve to the outside of the shell.

[0012] In a second aspect, the present disclosure provides a laser system, comprising a laser, a cooling pipe and a dehumidification structure, wherein the dehumidification structure comprises a shell and a first valve, the shell is formed with a first cavity and a first opening, the first cavity is connected to the laser through the first opening, the first valve is arranged at the first opening to prevent fluid from passing through the first opening, when the cooling pipe cools the laser, the coolant flows through the cooling pipe and cools the laser, and the coolant flows through the cooling pipe and cools the shell to reduce the temperature inside the shell, so that the first valve is opened to allow the fluid in the laser to enter the shell through the first opening.

[0013] Optionally, a second valve is further included, the shell is formed with a second opening, the second cavity is connected to the outside through the second opening, the second valve is arranged at the second opening to prevent the fluid from passing through the second opening, and the second valve can be opened by adjusting the air pressure in the shell to allow the fluid to pass through the second opening.

[0014] Optionally, the first valve includes a first elastic member and a first sealing member, the first elastic member is used to allow the first sealing member to press against the first opening to close the first opening, wherein the first sealing member can be separated from the first opening to open the first valve by adjusting the air pressure in the shell, wherein the first valve is a one-way valve to prevent fluid from leaving the shell through the first opening to the outside of the shell.

[0015] Optionally, the second valve further includes a second elastic member and a second sealing member, the second elastic member being used to allow the second sealing member to press against the second opening to close the second opening, wherein the second sealing member can be separated from the second opening to open the second valve by adjusting the air pressure in the shell, wherein the second valve is a one-way valve to prevent fluid from entering the shell from outside the shell through the second opening.

[0016] Optionally, by cooling the fluid in the shell, the air pressure in the shell is reduced so that the first valve is opened, and the second valve is in a closed state; by heating the fluid in the shell or allowing the fluid in the shell to return to room temperature, the air pressure in the shell is increased so that the second valve is opened, and the first valve is in a closed state.

[0017] Optionally, the air pressure in the shell is adjusted by adjusting the temperature in the shell so as to separate the first sealing member from the first opening.

[0018] Optionally, the cooling pipe abuts against the shell to adjust the temperature inside the shell.

[0019] Optionally, when the coolant flows through the cooling pipe to cool the shell to lower the temperature inside the shell, the fluid in the shell contracts due to the cold to reduce the air pressure in the shell so that the first valve opens; when the cooling pipe no longer cools the laser, the shell returns to normal temperature, causing the gas in the fluid in the shell to expand to open the second valve, so that the condensed water can flow through the second valve to the outside of the shell.

[0020] In some embodiments of the present disclosure, the laser system is provided with a first valve and the air pressure in the shell is adjusted to open the first valve, thereby allowing external fluid (including water vapor or liquid droplets) to enter the shell through the first opening to achieve dehumidification. The structure is simple and the control is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a dehumidification structure in a certain embodiment of the present disclosure.

[0022] Figure 2 It is a schematic structural diagram of a shell in another embodiment of the present disclosure.

[0023] Figure 3 for Figure 2 A cross-sectional view of the shell in FIG.

[0024] Figure 4 for Figure 2 Schematic diagram of the structure of the shell at another angle.

[0025] Figure 5 Schematic diagram of the structure of a laser system in a certain embodiment of the present disclosure.

[0026] Markings in the figure: 100, dehumidification structure; 110, shell; 111, first cavity; 112, first opening; 113, second opening; 120, first valve; 121, first elastic member; 122, first sealing member; 130, second valve; 131, second elastic member; 132, second sealing member; 140, first channel; 150, second channel; 160, groove; 200, cooling pipe; 300, laser; 310, optical resonant cavity; 320, laser housing; 400, heat exchanger; 500, evaporator; 600, compressor; 710, water vapor; 720, water droplets; 800, expansion valve. DETAILED DESCRIPTION

[0027] For better understanding and implementation, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure.

[0028] In the description of the present disclosure, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "far", "near", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present disclosure.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0030] The present disclosure provides a dehumidification structure 100, such as Figure 1 As shown, it includes a shell 110 and a first valve 120. The shell 110 is formed with a first cavity 111 and a first opening 112. The first cavity 111 is connected to the outside through the first opening 112. The first valve 120 is arranged at the first opening 112 to prevent the fluid from passing through the first opening 112. The first valve 120 can be opened by adjusting the air pressure in the shell 110 to allow the fluid to pass through the first opening 112.

[0031] It should be noted that, in some embodiments, the first opening 112 of the housing 110 is connected to the internal cavity of the laser 300. Therefore, when the first valve 120 is opened, the fluid in the laser 300 can enter the housing 110 through the first opening 112. It should be noted that the fluid includes gas and liquid, that is, not only liquid such as water in the laser 300 can enter the housing 110, but also air should be able to enter the housing 110, and water vapor 710 in the air can also enter the housing 110.

[0032] Specifically, the first valve 120 includes a first elastic member 121 and a first sealing member 122, wherein the first elastic member 121 is used to allow the first sealing member 122 to press against the first opening 112 to close the first opening 112, wherein the first sealing member 122 can be separated from the first opening 112 by adjusting the air pressure in the housing 110 to open the first valve 120. Specifically, when the air pressure inside the housing 110 decreases, the air pressure outside the housing 110 is greater than the air pressure inside the housing 110, so that the fluid outside the housing 110 (for example, the fluid inside the laser 300) can exert force on the first sealing member 122, so that the first sealing member 122 is separated from the first opening 112, and then the first valve 120 is opened to allow the fluid to enter the interior of the housing 110.

[0033] In some embodiments, the dehumidification structure 100 further includes a second valve 130, the housing 110 is formed with a second opening 113, the second cavity is connected to the outside through the second opening 113, the second valve 130 is arranged at the second opening 113 to prevent the fluid from passing through the second opening 113, and the second valve 130 can be opened by adjusting the air pressure in the housing 110 to allow the fluid to pass through the second opening 113. Specifically, the second valve 130 further includes a second elastic member 131 and a second sealing member 132, the second elastic member 131 is used to allow the second sealing member 132 to press against the second opening 113 to close the second opening 113, wherein the second sealing member 132 can be separated from the second opening 113 by adjusting the air pressure in the housing 110 to open the second valve 130. When the air pressure inside the housing 110 increases, the air pressure outside the housing 110 is lower than the air pressure inside the housing 110, so the air pressure inside the housing 110 can exert force on the second sealing member 132, so that the second sealing member 132 is separated from the second opening 113, and then the second valve 130 is opened to allow the fluid to leave the housing 110 and enter the outside. In some embodiments, the first elastic member 121 is a spring, and the second elastic member 132 can also be a spring. The first sealing member 122 can be a metal spherical structure, and the second sealing member 132 can also be a metal spherical structure. The material of the housing can be metal.

[0034] In some embodiments, a first channel 140 is formed in the housing 110, the first opening 112 is located in the first channel 140, the first elastic member 121 and the first sealing member 122 are located in the first channel 140, the bottom end of the first elastic member 121 is fixed to the first channel 140, the top end of the first elastic member 121 abuts against the first sealing member 122, under the action of the first elastic member 121, under normal circumstances, the first sealing member 122 abuts against the first opening 112, so that the first opening 112 is sealed, and the fluid cannot pass through the first opening 112. When the air pressure inside the housing 110 decreases, the air pressure outside the first opening 112 is greater than the air pressure inside the housing 110, and under the action of the pressure difference, the first sealing member 122 overcomes the force of the first elastic member 121 to separate from the first opening 112, so that the external fluid can enter the interior of the housing 110 through the first opening 112.

[0035] In some embodiments, the first valve 120 is a one-way valve, which allows the fluid to enter the shell 110 from the outside of the shell 110 through the first opening 112, and prevents the fluid from flowing from the inside of the shell 110 to the outside of the shell 110 through the first opening 112. Specifically, when the air pressure inside the shell 110 is greater than or equal to the air pressure at the other end of the first opening 112 (i.e., the end outside the shell 110), the air pressure inside the shell 110 will exert force on the first sealing member 122, so that the first sealing member 122 presses against the first opening 112, thereby making the first valve 120 in a closed state, so that the fluid cannot pass through the first opening 112, thereby achieving one-way passage. More specifically, the first channel 140 is formed with a tapered area, which gradually narrows from bottom to top, and the first opening 112 is set in the tapered area, so that when the first sealing member 122 is forced to move downward, it can no longer abut and seal the first opening 112. When the first sealing member 122 is not affected by the pressure difference between the inside and outside of the housing 110, the first elastic member 121 can reset the first sealing member 122 so that the first sealing member 122 is pressed against the first channel 140 to seal the first opening 112. In addition, it should be noted that in some embodiments, the first channel 140 and the second channel 150 are not provided with a tapered area, as described in detail in Figure 2 and Figure 3 The present disclosure has no limitation on the shapes of the first channel 140 and the second channel 150 , and their specific structures can be adjusted according to circumstances.

[0036] In some embodiments, the second valve 130 is a one-way valve, which allows the fluid to leave the shell 110 through the second opening 113 to the outside of the shell 110, so as to prevent the fluid from entering the shell 110 through the second opening 113 from the outside of the shell 110. More specifically, when the air pressure inside the shell 110 is less than or equal to the air pressure at the other end of the second opening 113 (i.e., the end outside the shell 110), the air pressure outside the shell 110 will exert force on the second sealing member 132, so that the second sealing member 132 presses against the second opening 113, thereby making the second valve 130 in a closed state, so that the fluid cannot pass through the second opening 113, thereby achieving one-way passage. More specifically, the second channel 150 is formed with a tapered area, which gradually narrows from bottom to top, and the second opening 113 is arranged in the tapered area, so that when the second sealing member 132 is forced to move downward, it can no longer abut and seal the second opening 113. When the second sealing member 132 is not affected by the pressure difference between the inside and outside of the housing 110 , the second elastic member can reset the second sealing member 132 so that the second sealing member 132 is pressed against the second channel 150 to seal the second opening 113 .

[0037] In some embodiments, the first opening 112 is located at the top of the housing 110, and the second opening 113 is located at the bottom of the housing 110. In this way, the water droplets 720 condensed from the water vapor 710 reach the first opening 112 under the action of gravity, and the water droplets 720 easily gather at the bottom of the housing 110 to leave through the second opening 113.

[0038] In some embodiments, by cooling the fluid in the housing 110, the air pressure in the housing 110 is reduced so that the first valve 120 is opened, and the second valve 130 is in a closed state. Specifically, by cooling the fluid in the housing 110, the gas in the housing 110 is cooled and shrunk on the one hand, and the water vapor 710 in the fluid condenses into water droplets 720 on the other hand, so that the sealed housing 110 forms a certain vacuum. In this case, the pressure outside the housing 110 is greater than the pressure inside the housing 110, so that the first valve 120 is opened. At this time, since the second valve 130 is a one-way valve, it prevents the fluid from entering the housing 110 from the outside of the housing 110 through the second opening 113, and the gas outside the housing 110 cannot enter the inside of the housing 110 through the second opening 113, so the second valve 130 is in a closed state. More specifically, when the air pressure outside the housing 110 is less than or equal to the air pressure inside the housing 110, the pressure difference can separate the second sealing member 132 from the second opening 113 to open the second valve 130, and when the pressure outside the housing 110 is greater than the pressure inside the housing 110, the second sealing member 132 abuts against the second opening 113 under the action of the second elastic member to seal the second opening 113. Therefore, when the pressure outside the housing 110 is greater than the pressure inside the housing 110, the second valve 130 is in a closed state.

[0039] In some embodiments, by heating the fluid in the housing 110 or allowing the fluid in the housing 110 to return to room temperature, the gas pressure in the housing 110 rises to open the second valve 130, and the first valve 120 is in a closed state. Specifically, by heating the fluid in the housing 110 or allowing the fluid in the housing 110 to no longer be cooled and gradually return to room temperature, the gas in the housing 110 is heated and expanded. In this case, the pressure in the housing 110 is greater than or equal to the pressure outside the housing 110, so that the second valve 130 is opened. At this time, since the first valve 120 is a one-way valve, it prevents the fluid from leaving the housing 110 through the first opening 112 from the inside of the housing 110 to the outside of the housing 110, and the gas in the housing 110 cannot leave the housing 110 through the first opening 112, so the first valve 120 is in a closed state. More specifically, when the air pressure outside the shell 110 is greater than the air pressure inside the shell 110, the pressure difference can separate the first sealing member 122 from the first opening 112 to open the first valve 120; when the pressure outside the shell 110 is less than the pressure inside the shell 110, the first sealing member 122 abuts against the first opening 112 under the action of the first elastic member to seal the first opening 112.

[0040] Therefore, in some embodiments, the air pressure in the shell 110 can be adjusted by adjusting the temperature in the shell 110 so as to separate the first seal 122 from the first opening 112. In addition, in some embodiments, the dehumidification structure 100 includes a cooling pipe 200, and the cooling pipe 200 abuts against the shell 110 to adjust the temperature in the shell 110. It should be noted that in some embodiments, the cooling pipe 200 passes through the shell 110, so that part of the cooling pipe 200 is located in the shell 110. In some embodiments, the cooling pipe 200 is located outside the shell 110, and the cooling pipe 200 is in contact with the outer wall of the shell 110. There are many different arrangements for the cooling pipe 200, and the present disclosure does not make any specific restrictions.

[0041] The present disclosure also provides a laser system, such as Figure 5 As shown, it includes a laser 300, a heat exchanger 400 and a dehumidification structure 100. The laser 300 is connected to the first opening 112 of the shell 110, and the heat exchanger 400 is connected to the cooling pipe 200. When the heat exchanger 400 cools down the laser 300, the refrigerant flows through the cooling pipe 200 to reduce the heat of the coolant in the heat exchanger 400, and the refrigerant flows through the cooling pipe 200 and cools the shell 110 to reduce the temperature inside the shell 110, so that the first valve 120 opens, allowing the fluid in the laser 300 to enter the shell 110 through the first opening 112.

[0042] Specifically, if Figure 5As shown. The coolant in the heat exchanger 400 is transported to the laser 300 through a pipeline to cool the laser 300. At the same time, the refrigerant in the cooling pipe 200 exchanges heat with the coolant in the heat exchanger 400, and the refrigerant also flows through the cooling pipe 200, thereby cooling the shell 110 to reduce the temperature inside the shell 110. More specifically, the laser system also includes an evaporator 500, a compressor 600 and an expansion valve 800. Specifically, the coolant exchanges heat with the refrigerant in the heat exchanger 400, the temperature of the refrigerant increases, and the temperature of the coolant decreases. Next, the heated refrigerant enters the compressor 600 of the system and is compressed to become a high-temperature and high-pressure gas. Then, the refrigerant enters the evaporator 500, and the refrigerant passes through the evaporator 500 to exchange heat with the outside air to dissipate the heat of the refrigerant, so that the refrigerant becomes a high-temperature and high-pressure liquid. The refrigerant is then passed through the expansion valve 800 to reduce its pressure and temperature. At this time, the coolant becomes a low-temperature liquid again. Finally, the coolant that has become a cryogenic liquid is transported to the cooling pipe 200 to cool the shell 110, and then transported to the heat exchanger 400 to cool the coolant. It should be noted that in some embodiments, the laser system also includes a water tank, which provides coolant (i.e., water) to the heat exchanger 400. The refrigerant exchanges heat with the coolant in the heat exchanger 400, so that the coolant temperature is reduced. The coolant after heat exchange enters the laser 300 to cool the laser 300. In some embodiments, the refrigerant can be ‌R134a coolant (1,1,1,2-tetrafluoroethane coolant), R410A coolant, etc.

[0043] In some embodiments, Figure 4 As shown, the housing 110 is formed with a groove 160 to install and fix the cooling channel 200 .

[0044] In some embodiments, when the refrigerant flows through the cooling pipe 200 to cool the housing 110 to reduce the temperature inside the housing 110, the fluid inside the housing 110 contracts due to the cold to reduce the air pressure in the housing 110 so that the first valve 120 opens. When the heat exchanger 400 no longer cools the laser 300, the housing 110 returns to normal temperature, so that the gas in the fluid inside the housing 110 expands to open the second valve 130, so that the water droplets 720 after the water vapor 710 condenses can flow to the outside of the housing 110 through the second valve 130.

[0045] In other embodiments, the laser system includes a laser 300 and a dehumidification structure 100. When the cooling pipe 200 cools the laser 300, the coolant flows through the cooling pipe 200 and cools the laser 300, and the coolant flows through the cooling pipe 200 and cools the shell 110 to reduce the temperature inside the shell 110, so that the first valve 120 is opened, allowing the fluid in the laser 300 to enter the shell 110 through the first opening 112; when the coolant flows through the cooling pipe 200 to cool the shell 110 to reduce the temperature inside the shell 110, the moisture in the fluid in the shell 110 is condensed; when the cooling pipe 200 no longer cools the laser 300, the shell 110 returns to normal temperature, so that the gas in the fluid in the shell 110 expands, and the air pressure inside the shell is greater than the air pressure outside the shell, so as to open the second valve 130, so that the condensed moisture can flow to the outside of the shell 110 through the second valve 130. In the above solution, the housing 110 and the laser 300 are cooled directly by the coolant flowing through the cooling pipe 200, and the structure is relatively simple. The coolant can be replenished through other structures, such as a box for storing the coolant, and a cooling device is arranged in the box.

[0046] Specifically, in some embodiments, the laser 300 includes a pump source, an optical resonant cavity 310, and a laser housing 320. The cooling liquid is mainly delivered to the pump source and the vicinity of the optical resonant cavity 310 for cooling. The laser housing 320 may be provided with a pipe to communicate with the first opening 112, so that the water vapor in the laser housing 320 can reach the first opening 112 through the pipe, and has a chance to enter the first opening 112 when the first valve 120 is opened.

[0047] In some embodiments, when the laser 300 is started, the heat exchanger 400 is also started and starts to deliver cooling liquid to the laser 300 to cool the laser 300. At the same time, the refrigerant is also delivered to the heat exchanger 400 for heat exchange. In addition, during the delivery of the refrigerant, the refrigerant passes through the cooling pipe 200 to cool the shell 110. At this time, the fluid in the shell 110 shrinks, which causes the air pressure in the shell 110 to decrease, and the first valve 120 is opened. Since the first valve 120 is opened and the air pressure in the shell 110 is small, the fluid in the laser 300 is attracted and guided to the first opening 112, and enters the shell 110 through the first opening 112, thereby dehumidifying the laser 300. When the laser 300 stops operating, the heat exchanger 400 will naturally stop operating. At this time, the refrigerant is no longer delivered to the cooling pipe, and the temperature in the shell gradually returns to room temperature (in some embodiments, at least overnight). When the temperature of the gas in the housing 110 increases, it expands and pushes the second sealing member 132 to separate from the second opening 113 to open the second valve 130. At this time, water vapor or condensed water droplets can leave the housing 110 through the second opening 113. The dehumidification structure in the laser system disclosed in the present invention effectively combines the operation of the cooling system of the laser, and adopts a simple and efficient method to remove water vapor or droplets in the laser to ensure the normal operation of the laser.

[0048] The technical means disclosed in the present disclosure are not limited to the technical means disclosed in the above-mentioned implementation modes, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present disclosure, and these improvements and modifications are also regarded as the protection scope of the present disclosure.

Claims

1. A laser system, characterized in that: It includes a laser, a heat exchanger, a cooling pipe and a dehumidification structure, wherein the dehumidification structure includes a shell and a first valve, the shell is formed with a first cavity and a first opening, the first cavity is connected to the laser through the first opening, the first valve is arranged at the first opening to prevent the fluid from passing through the first opening, the heat exchanger is connected to the cooling pipe, when the heat exchanger cools the laser, the refrigerant flows through the cooling pipe to reduce the heat of the coolant in the heat exchanger, and the refrigerant flows through the cooling pipe and cools the shell to reduce the temperature in the shell to adjust the air pressure in the shell, so that the first valve is opened to allow the fluid in the laser to enter the shell through the first opening.

2. The laser system according to claim 1, characterized in that It also includes a second valve, the shell is formed with a second opening, the second cavity is connected to the outside through the second opening, the second valve is arranged at the second opening to prevent the fluid from passing through the second opening, and the second valve can be opened by adjusting the air pressure in the shell to allow the fluid to pass through the second opening.

3. The laser system according to claim 1, characterized in that The first valve includes a first elastic member and a first sealing member, wherein the first elastic member is used to allow the first sealing member to press against the first opening to close the first opening, wherein the first sealing member can be separated from the first opening to open the first valve by adjusting the air pressure in the shell, wherein the first valve is a one-way valve to prevent fluid from leaving the shell through the first opening to the outside of the shell.

4. The laser system according to claim 2, characterized in that The second valve further includes a second elastic member and a second sealing member, wherein the second elastic member is used to allow the second sealing member to press against the second opening to close the second opening, wherein the second sealing member can be separated from the second opening to open the second valve by adjusting the air pressure in the shell, wherein the second valve is a one-way valve to prevent fluid from entering the shell from outside the shell through the second opening.

5. The laser system according to claim 2, characterized in that By cooling the fluid in the shell, the air pressure in the shell is reduced so that the first valve is opened, and the second valve is in a closed state; by heating the fluid in the shell or allowing the fluid in the shell to return to room temperature, the air pressure in the shell is increased so that the second valve is opened, and the first valve is in a closed state.

6. The laser system according to claim 3, characterized in that The air pressure in the housing is adjusted by adjusting the temperature in the housing so as to separate the first sealing member from the first opening.

7. The laser system according to any one of claims 1 to 6, characterized in that: The cooling pipe is in contact with the housing to adjust the temperature inside the housing.

8. The laser system according to claim 2, characterized in that When the refrigerant flows through the cooling pipe to cool the shell to reduce the temperature inside the shell, the fluid in the shell contracts due to the cold to reduce the air pressure in the shell so that the first valve opens; when the heat exchanger no longer cools the laser, the shell returns to normal temperature, causing the gas in the fluid in the shell to expand to open the second valve, so that the condensed moisture can flow through the second valve to the outside of the shell.

9. A laser system, characterized in that: It includes a laser, a cooling pipe and a dehumidification structure, wherein the dehumidification structure includes a shell and a first valve, the shell is formed with a first cavity and a first opening, the first cavity is connected with the laser through the first opening, the first valve is arranged at the first opening to prevent the fluid from passing through the first opening, when the cooling pipe cools the laser, the coolant flows through the cooling pipe and cools the laser, and the coolant flows through the cooling pipe and cools the shell to reduce the temperature in the shell, so that the first valve is opened to allow the fluid in the laser to enter the shell through the first opening.

10. The laser system according to claim 9, characterized in that It also includes a second valve, the shell is formed with a second opening, the second cavity is connected to the outside through the second opening, the second valve is arranged at the second opening to prevent the fluid from passing through the second opening, and the second valve can be opened by adjusting the air pressure in the shell to allow the fluid to pass through the second opening.

11. The laser system according to claim 9, characterized in that The first valve includes a first elastic member and a first sealing member, wherein the first elastic member is used to allow the first sealing member to press against the first opening to close the first opening, wherein the first sealing member can be separated from the first opening to open the first valve by adjusting the air pressure in the shell, wherein the first valve is a one-way valve to prevent fluid from leaving the shell through the first opening to the outside of the shell.

12. The laser system according to claim 10, characterized in that The second valve further includes a second elastic member and a second sealing member, wherein the second elastic member is used to allow the second sealing member to press against the second opening to close the second opening, wherein the second sealing member can be separated from the second opening to open the second valve by adjusting the air pressure in the shell, wherein the second valve is a one-way valve to prevent fluid from entering the shell from outside the shell through the second opening.

13. The laser system according to claim 10, characterized in that By cooling the fluid in the shell, the air pressure in the shell is reduced so that the first valve is opened, and the second valve is in a closed state; by heating the fluid in the shell or allowing the fluid in the shell to return to room temperature, the air pressure in the shell is increased so that the second valve is opened, and the first valve is in a closed state.

14. The laser system according to claim 11, characterized in that The air pressure in the housing is adjusted by adjusting the temperature in the housing so as to separate the first sealing member from the first opening.

15. The laser system according to any one of claims 9 to 14, characterized in that: The cooling pipe is in contact with the housing to adjust the temperature inside the housing.

16. The laser system according to claim 10, characterized in that When the coolant flows through the cooling pipe to cool the shell to reduce the temperature inside the shell, the fluid in the shell contracts due to the cold to reduce the air pressure in the shell so that the first valve opens; when the cooling pipe no longer cools the laser, the shell returns to normal temperature, causing the gas in the fluid in the shell to expand to open the second valve, so that the condensed moisture can flow through the second valve to the outside of the shell.

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