Laser system

Abstract

The present disclosure provides a laser system, which includes a laser, a heat exchanger, a cooling pipe, and a dehumidification structure. The dehumidification structure includes a housing and a first valve. The housing forms a first cavity and a first opening. The first cavity communicates with the outside of the laser through the first opening. The first valve is disposed at the first opening to prevent fluid from passing through the first opening. The heat exchanger is communicated with the cooling pipe. The dehumidification structure in the above solution is provided with a first valve and adjusts the air pressure in the housing to open the first valve, so that the fluid (including water vapor or droplets) of the laser passes through the first opening and enters the housing to achieve dehumidification. The structure is simple and the control is convenient.

Description

Technical Field

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

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

[0003] To overcome at least one of the above-mentioned defects of the prior art, the purpose of the present disclosure is to provide a laser system to relatively conveniently remove water vapor inside the laser.

[0004] In a first aspect, the present disclosure provides a laser system, including a laser, a heat exchanger, a cooling pipe, and a dehumidification structure. Among them, the dehumidification structure includes a housing and a first valve. The housing forms a first cavity and a first opening. The first cavity communicates with the laser through the first opening. The first valve is arranged at the first opening to prevent fluid from passing through the first opening. The heat exchanger is communicated with the cooling pipe. When the heat exchanger cools down 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 down the housing to reduce the temperature inside the housing to adjust the air pressure inside the housing, so that the first valve opens, allowing the fluid in the laser to enter the housing through the first opening.

[0005] Optionally, it further includes a second valve. The housing forms a second opening. The first cavity communicates with the outside through the second opening. The second valve is arranged at the second opening to prevent fluid from passing through the second opening. The air pressure inside the housing can be adjusted to open the second valve, allowing 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 make the first sealing member press against the first opening to close the first opening. Among them, the air pressure inside the housing can be adjusted to separate the first sealing member from the first opening to open the first valve. Among them, the first valve is a one-way valve to prevent fluid from leaving the housing through the first opening and going outside the housing.

[0007] Optionally, the second valve further includes a second elastic member and a second seal. The second elastic member is configured to press the second seal against the second opening to close the second opening. Wherein, the second seal can be separated from the second opening by adjusting the air pressure inside the housing to open the second valve. The second valve is a one-way valve to prevent fluid from entering the housing from outside the housing through the second opening.

[0008] Optionally, by cooling the fluid inside the housing, the air pressure inside the housing is reduced to open the first valve, and the second valve is in a closed state; by heating the fluid inside the housing or restoring the fluid inside the housing to room temperature, the air pressure inside the housing is increased to open the second valve, and the first valve is in a closed state.

[0009] Optionally, the air pressure inside the housing is adjusted by adjusting the temperature inside the housing so that the first seal is separated from the first opening.

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

[0011] Optionally, when the refrigerant flows through the cooling pipe to cool the housing and reduce the temperature inside the housing, the fluid inside the housing contracts due to cooling, causing the air pressure inside the housing to decrease and opening the first valve; when the heat exchanger stops cooling the laser, the housing returns to normal temperature, causing the gas in the fluid inside the housing to expand, opening the second valve so that the condensed moisture can flow out of the housing through the second valve.

[0012] In a second aspect, the present disclosure provides a laser system, including a laser, a cooling pipe, and a dehumidification structure. The dehumidification structure includes a housing and a first valve. The housing forms a first cavity and a first opening. The first cavity communicates with the laser through the first opening. The first valve is disposed 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 also flows through the cooling pipe and cools the housing to reduce the temperature inside the housing, causing the first valve to open, allowing the fluid in the laser to enter the housing through the first opening.

[0013] Optionally, it further includes a second valve. The housing is formed with a second opening, and the first cavity communicates with the outside through the second opening. The second valve is disposed at the second opening to prevent fluid from passing through the second opening. The second valve can be opened by adjusting the air pressure in the housing, allowing 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 press the first sealing member against the first opening to close the first opening. Among them, the first sealing member can be separated from the first opening by adjusting the air pressure in the housing to open the first valve. Among them, the first valve is a one-way valve to prevent fluid from leaving the housing through the first opening to the outside of the housing.

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

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

[0017] Optionally, the air pressure in the housing is adjusted by adjusting the temperature in the housing so that the first sealing member is separated from the first opening.

[0018] Optionally, the cooling pipe abuts against the housing to adjust the temperature in the housing.

[0019] Optionally, when the coolant flows through the cooling pipe to cool the housing to reduce the temperature in the housing, the fluid in the housing contracts due to cooling, causing the air pressure in the housing to decrease, opening the first valve; when the cooling pipe no longer cools the laser, the housing returns to normal temperature, causing the gas in the fluid in the housing to expand, opening the second valve, allowing the condensed moisture to flow out of the housing through the second valve.

[0020] In some embodiments of the present disclosure, the laser system is provided with a first valve and the air pressure inside the housing is adjusted to open the first valve, so that external fluid (including water vapor or droplets) can enter the housing through the first opening to achieve dehumidification. The structure is simple and the control is convenient. Description of the Drawings

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

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

[0023] Figure 3 is Figure 2 a cross-sectional view of the housing in

[0024] Figure 4 is Figure 2 a schematic structural diagram of the housing from another angle in

[0025] Figure 5 It is a schematic structural diagram of the laser system in a certain embodiment of the present disclosure.

[0026] Reference signs in the figures: 100, dehumidification structure; 110, housing; 111, first cavity; 112, first opening; 113, second opening; 120, first valve; 121, first elastic member; 122, first seal; 130, second valve; 131, second elastic member; 132, second seal; 140, first channel; 150, second channel; 160, groove; 200, cooling pipe; 300, laser; 310, optical resonator; 320, laser housing; 400, heat exchanger; 500, evaporator; 600, compressor; 710, water vapor; 720, water droplet; 800, expansion valve. Detailed Embodiments

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

[0028] In the description of the present disclosure, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "far", "near", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present disclosure.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. The terms used in the description of this disclosure herein are for the purpose of describing particular embodiments only and are not intended to limit this disclosure.

[0030] The present disclosure provides a dehumidification structure 100, as Figure 1 shown, including a housing 110 and a first valve 120. The housing 110 forms a first cavity 111 and a first opening 112. The first cavity 111 communicates with the outside through the first opening 112. The first valve 120 is disposed at the first opening 112 to prevent fluid from passing through the first opening 112. The first valve 120 can be opened by adjusting the air pressure in the housing 110 to allow 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 communicates with 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 liquids such as moisture in the laser 300 can enter the housing 110, but air should also be able to enter the housing 110, and the 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. The first elastic member 121 is used to press the first sealing member 122 against the first opening 112 to close the first opening 112. Among them, 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 becomes smaller, the air pressure outside the housing 110 is greater than the gas inside the housing 110. Therefore, the fluid outside the housing 110 (such as the fluid inside the laser 300) can apply a force to the first sealing member 122, causing the first sealing member 122 to separate from the first opening 112, thereby opening the first valve 120 to allow fluid to enter 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 first cavity communicates with the outside through the second opening 113. The second valve 130 is disposed at the second opening 113 to prevent fluid from passing through the second opening 113. The second valve 130 can be opened by adjusting the air pressure in the housing 110 so that the fluid can 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 press the second sealing member 132 against the second opening 113 to close the second opening 113. Among them, 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 less than the air pressure inside the housing 110. Therefore, the air pressure inside the housing 110 can exert a force on the second sealing member 132, causing the second sealing member 132 to separate from the second opening 113, thereby opening the second valve 130 to allow the fluid to leave the inside of 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, and 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, normally the first sealing member 122 abuts against the first opening 112, making the first opening 112 airtight and the fluid unable to 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. Under the action of the pressure difference, the first sealing member 122 overcomes the acting force of the first elastic member 121 to separate from the first opening 112, so that the external fluid can enter the inside of the housing 110 through the first opening 112.

[0035] In some embodiments, the first valve 120 is a one-way valve that allows fluid to enter the housing 110 from outside the housing 110 through the first opening 112, while preventing the fluid from flowing from inside the housing 110 through the first opening 112 to the outside of the housing 110. Specifically, when the air pressure inside the housing 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 housing 110), the air pressure inside the housing 110 will exert a force on the first seal 122, causing the first seal 122 to press against the first opening 112, thereby closing the first valve 120 and preventing the fluid from passing through the first opening 112, thus achieving one-way passage. More specifically, the first channel 140 is formed with a tapered region that gradually narrows from bottom to top, and the first opening 112 is disposed in the tapered region, so that when the first seal 122 is forced to move downward, it can no longer abut and seal the first opening 112. When the first seal 122 is not affected by the pressure difference inside and outside the housing 110, the first elastic member 121 can reset the first seal 122 to press the first seal 122 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 tapered regions, for details see Figure 2 and Figure 3 . The present disclosure places no restrictions 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 that allows fluid to leave the housing 110 from inside the housing 110 through the second opening 113, while preventing the fluid from entering the housing 110 from outside the housing 110 through the second opening 113. More specifically, when the air pressure inside the housing 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 housing 110), the air pressure outside the housing 110 will exert a force on the second seal 132, causing the second seal 132 to press against the second opening 113, thereby closing the second valve 130 and preventing the fluid from passing through the second opening 113, thus achieving one-way passage. More specifically, the second channel 150 is formed with a tapered region that gradually narrows from bottom to top, and the second opening 113 is disposed in the tapered region, so that when the second seal 132 is forced to move downward, it can no longer abut and seal the second opening 113. When the second seal 132 is not affected by the pressure difference inside and outside the housing 110, the second elastic member can reset the second seal 132 to press the second seal 132 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 obtained by the condensation of the water vapor 710 reach the first opening 112 under the action of gravity, and at the same time, the water droplets 720 are likely to accumulate at the bottom of the housing 110 to leave through the second opening 113.

[0038] In some embodiments, by cooling the fluid inside the housing 110, the air pressure inside the housing 110 is reduced to open the first valve 120, and the second valve 130 is in a closed state. Specifically, by cooling the fluid inside the housing 110, on the one hand, the gas inside the housing 110 cools and contracts, and on the other hand, the water vapor 710 in the fluid condenses into water droplets 720 accordingly, thereby forming a certain vacuum in the sealed housing 110. In this case, the pressure outside the housing 110 is greater than the pressure inside the housing 110, causing the first valve 120 to open. At this time, since the second valve 130 is a one-way valve that prevents the fluid from entering the housing 110 from outside the housing 110 through the second opening 113, the gas outside the housing 110 cannot enter the interior 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 seal 132 from the second opening 113 to open the second valve 130. When the pressure outside the housing 110 is greater than the pressure inside the housing 110, the second seal 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 inside the housing 110 or allowing the fluid inside the housing 110 to return to room temperature, the air pressure inside 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 inside the housing 110 or allowing the fluid inside the housing 110 to stop being cooled and gradually return to room temperature, the gas inside the housing 110 expands due to heat. In this case, the pressure inside the housing 110 is greater than or equal to the pressure outside the housing 110, causing the second valve 130 to open. At this time, since the first valve 120 is a one-way valve that prevents the fluid from leaving the housing 110 through the first opening 112 to the outside of the housing 110, the gas inside 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 housing 110 is greater than the air pressure inside the housing 110, the pressure difference can separate the first seal 122 from the first opening 112 to open the first valve 120. When the pressure outside the housing 110 is less than the pressure inside the housing 110, the first seal 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 temperature inside the housing 110 can be adjusted to adjust the air pressure inside the housing 110 so that the first seal 122 is separated 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 housing 110 to adjust the temperature inside the housing 110. It should be noted that in some embodiments, the cooling pipe 200 penetrates the housing 110 such that a part of the cooling pipe 200 is located inside the housing 110. In some embodiments, the cooling pipe 200 is located outside the housing 110, and the cooling pipe 200 is attached to the outer wall of the housing 110. The arrangement of the cooling pipe 200 is diverse, and the present disclosure does not make specific limitations.

[0041] The present disclosure also provides a laser system, as Figure 5 shown, including a laser 300, a heat exchanger 400, and a dehumidification structure 100. The laser 300 is communicated with the first opening 112 of the housing 110, and the heat exchanger 400 is communicated with the cooling pipe 200. When the heat exchanger 400 cools 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 housing 110 to reduce the temperature inside the housing 110, so that the first valve 120 opens, allowing the fluid in the laser 300 to enter the housing 110 through the first opening 112.

[0042] Specifically, as Figure 5As shown, the coolant in the heat exchanger 400 is transported through a pipeline into the laser 300 to cool down the laser 300. At the same time, the refrigerant in the cooling pipeline 200 exchanges heat with the coolant in the heat exchanger 400, and the refrigerant also flows through the cooling pipeline 200, thereby cooling the housing 110 to reduce the temperature inside the housing 110. More specifically, the laser system further 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 rises, and the temperature of the coolant drops. Next, the heated refrigerant enters the compressor 600 of the system and is compressed into a high-temperature and high-pressure gas state. Then, the refrigerant enters the evaporator 500, and the refrigerant passes through the evaporator 500 to exchange heat with the outside air to dissipate heat from the refrigerant, causing the refrigerant to become a high-temperature and high-pressure liquid state. Then, the refrigerant passes 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 low-temperature liquid is transported into the cooling pipeline 200 to cool the housing 110, and then transported to the heat exchanger 400 to cool the coolant. It should be noted that in some embodiments, the laser system further includes a water tank, and the water tank provides coolant (i.e., water) for the heat exchanger 400. The refrigerant exchanges heat with the coolant in the heat exchanger 400, causing the temperature of the coolant to drop. 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, such as Figure 4 As shown, the housing 110 is formed with a groove 160 for installing and fixing the cooling channel 200.

[0044] In some embodiments, when the refrigerant flows through the cooling pipeline 200 to cool the housing 110 to reduce the temperature inside the housing 110, the fluid inside the housing 110 contracts due to cold, causing the air pressure inside the housing 110 to decrease, 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, causing the gas in the fluid inside the housing 110 to expand, so as to open the second valve 130, enabling the water droplets 720 condensed from the water vapor 710 to flow out of the housing 110 through the second valve 130.

[0045] In some other embodiments, the laser system includes a laser 300 and a dehumidification structure 100. When the cooling pipe 200 cools down the laser 300, the coolant flows through the cooling pipe 200 to cool down the laser 300, and the coolant also flows through the cooling pipe 200 to cool down the housing 110 to reduce the temperature inside the housing 110, so that the first valve 120 is opened, allowing the fluid in the laser 300 to enter the housing 110 through the first opening 112; when the coolant flows through the cooling pipe 200 to cool down the housing 110 to reduce the temperature inside the housing 110, the moisture in the fluid inside the housing 110 is condensed; when the cooling pipe 200 no longer cools down the laser 300, the housing 110 returns to room temperature, causing the gas in the fluid inside the housing 110 to expand, and the air pressure inside the housing is greater than the air pressure outside the housing, so as to open the second valve 130, enabling the condensed moisture to flow out of the housing 110 through the second valve 130. In the above solution, the housing 110 and the laser 300 are directly cooled 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 provided in the box, etc.

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

[0047] In some embodiments, after the laser 300 is started, the heat exchanger 400 is also started and begins to deliver coolant 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 housing 110. At this time, the fluid in the housing 110 contracts due to cooling, which in turn causes the air pressure in the housing 110 to decrease, and the first valve 120 is thus opened. Since the first valve 120 is opened and the air pressure in the housing 110 is low, the fluid in the laser 300 is attracted and guided to the first opening 112, and enters the housing 110 through the first opening 112, thereby dehumidifying the laser 300. When the laser 300 stops operating, the heat exchanger 400 naturally stops running. At this time, the refrigerant is no longer delivered to the cooling pipe, and the temperature in the housing gradually returns to room temperature (in some embodiments, at least overnight). When the temperature in the housing 110 rises, the gas in the housing 110 expands and pushes the second seal 132 away 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 of the present disclosure effectively combines the operation of the cooling system of the laser and uses 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 of the present disclosure are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present disclosure, several improvements and refinements can be made, and these improvements and refinements 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 first 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. The first opening is located at the top of the shell, and the second opening is located at the bottom of the shell.

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 first 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. The first opening is located at the top of the shell, and the second opening is located at the bottom of the shell.

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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