exhaust valve

Abstract

The present application relates to a kind of exhaust valves, solve the problem that exhaust valve is difficult to be removed from wall and clean.Exhaust valve includes: valve body, the first exhaust passage is equipped on the valve body, the air inlet and exhaust port are equipped on the first exhaust passage;Base, the second exhaust passage is equipped on the base and is communicated with the first exhaust passage, the air outlet is equipped on the second exhaust passage, the valve body is detachably arranged on the base;Smoke valve piece unit, the smoke valve piece unit includes at least one smoke valve piece, each smoke valve piece is movably arranged on the valve body, the smoke valve piece unit moves relative to the valve body to open or close the exhaust port.

Description

Technical Field

[0001] This invention relates to an exhaust valve. Background Technology

[0002] The exhaust valve consists of a valve body and a valve plate. The valve body has an exhaust port, and the valve plate is located on the valve body and is used to open or close the exhaust port. The gas passage between the range hood and the flue is controlled by the exhaust valve. When the valve plate opens the exhaust port, the fumes emitted by the range hood are discharged into the flue through the exhaust valve. After the fumes emitted by the range hood cool, they liquefy into oil and adhere to the valve plate. The oil not only increases the weight of the valve plate, but its adhesiveness also increases the connection strength between the valve plate and the valve body. Based on the above description, it is easy to conclude that a valve plate with oil adhering to it is difficult to open the exhaust port.

[0003] Because valve plates covered in oil are difficult to open the exhaust port, exhaust valves require regular cleaning to ensure effective smoke extraction. However, existing exhaust valves are attached to the wall with an adhesive material, making them difficult to remove for cleaning. Summary of the Invention

[0004] The problem to be solved by this invention is to provide an exhaust valve that solves the problem of exhaust valves being difficult to remove from the wall for cleaning.

[0005] To address the above problems, the present invention provides the following technical solution:

[0006] The exhaust valve includes:

[0007] The valve body is provided with a first exhaust passage, and the first exhaust passage is provided with an air inlet and an exhaust outlet;

[0008] A base, wherein a second exhaust channel is provided on the base and is connected to the first exhaust channel, and an exhaust port is provided on the second exhaust channel; the valve body is detachably provided on the base.

[0009] The smoke exhaust valve plate unit includes at least one smoke exhaust valve plate, each smoke exhaust valve plate is movably disposed on the valve body, and the smoke exhaust valve plate unit moves relative to the valve body to open or close the exhaust port.

[0010] In this invention, the exhaust valve includes a valve body, a base, and an exhaust valve plate unit. The exhaust valve plate unit includes at least one exhaust valve plate, each movably mounted on the valve body. The valve body is detachably mounted on the base, which is fixedly connected to a wall or the exhaust valve. When the valve body is detachably mounted on the base, it can be removed to clean both the valve body and the exhaust valve plate unit. This design solves the problem of the exhaust valve being difficult to remove from the wall for cleaning, and is particularly convenient for cleaning the side of the exhaust valve plate facing away from the exhaust port and the inner wall of the valve body.

[0011] Since the exhaust valve is used to discharge fumes, it is essential to clean the oil that adheres to the exhaust valve after the fumes liquefy regularly, in order to prevent the oil from sticking the exhaust valve plate to the valve body.

[0012] In addition, the valve body and the smoke exhaust valve plate unit can be replaced by removing the valve body from the base.

[0013] Furthermore, a smoke-proof opening is also provided on the first exhaust passage;

[0014] The exhaust valve also includes:

[0015] A smoke-proof valve plate unit includes at least one smoke-proof valve plate, each smoke-proof valve plate being movably disposed on the valve body. The smoke-proof valve plate unit moves relative to the valve body to open or close the smoke-proof port. When the smoke exhaust valve plate unit moves relative to the valve body to close the exhaust port, and the smoke-proof valve plate unit moves relative to the valve body to close the smoke-proof port, the smoke exhaust valve plate unit, the smoke-proof valve plate unit, and the valve body form a smoke-proof cavity.

[0016] In this invention, the exhaust valve also includes a smoke-proof valve plate unit, which includes at least one smoke-proof valve plate. Each smoke-proof valve plate is movably disposed on the valve body. Since the valve body is detachably disposed on the base, the smoke-proof valve plate can be cleaned by removing it from the valve body base.

[0017] In this invention, when the exhaust valve unit moves relative to the valve body to close the exhaust port, and the smoke isolation valve unit moves relative to the valve body to close the smoke isolation port, the exhaust valve unit, the smoke isolation valve unit, and the valve body form a smoke isolation chamber. With this design, regardless of whether the smoke is blown into the smoke isolation chamber from the inlet or outlet, the exhaust valve unit cannot open the exhaust port, and the smoke isolation valve unit cannot open the smoke isolation port.

[0018] Furthermore, the valve body includes a first annular cylinder and an annular mounting plate. The annular mounting plate is provided with an annular through hole. The smoke isolation port is located at the first end of the annular through hole, and the exhaust port is located at the tail end of the annular through hole. The vertical projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port are located inside the air inlet, and the vertical projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port are located inside the air outlet.

[0019] When the vertical projections of at least a portion of the smoke-proof opening and at least a portion of the exhaust opening are located within the air inlet, the fumes can pass through the air inlet, smoke-proof opening, and exhaust opening without obstruction. Specifically, after the fumes enter the air inlet, some of the fumes can move linearly within the first exhaust channel to at least a portion of the smoke-proof opening (the at least a portion of the smoke-proof opening is projected vertically onto the air inlet). When some of the fumes can move linearly within the first exhaust channel to at least a portion of the smoke-proof opening, some of the fumes will guide the remaining fumes, causing them to enter the smoke-proof opening. Similarly, after the fumes enter the air inlet, some of the fumes can move linearly within the first exhaust channel to at least a portion of the exhaust opening (the at least a portion of the exhaust opening is projected vertically onto the air inlet). When some of the fumes can move linearly within the first exhaust channel to at least a portion of the exhaust opening, some of the fumes will guide the remaining fumes, causing them to enter the exhaust opening. This design avoids the fumes from being blocked by the wall of the first exhaust channel, thus preventing turbulence within the first exhaust channel.

[0020] When the vertical projections of at least a portion of the smoke inlet and at least a portion of the exhaust outlet are located within the air outlet, the fumes can pass through the smoke inlet, exhaust outlet, and air outlet without obstruction. Specifically, after the fumes enter at least a portion of the smoke inlet (the at least a portion of the smoke inlet being projected vertically onto the air inlet), some of the fumes can move linearly to the air outlet within the second exhaust channel. When some of the fumes can move linearly to the air outlet within the second exhaust channel, some of the fumes will guide the remaining fumes, causing them to enter the air outlet. Similarly, when the fumes enter at least a portion of the exhaust outlet (the at least a portion of the exhaust outlet being projected vertically onto the air inlet), some of the fumes can move linearly to the air outlet within the second exhaust channel. When some of the fumes can move linearly to the air outlet within the second exhaust channel, some of the fumes will guide the remaining fumes, causing them to enter the air outlet. This design avoids the fumes from being blocked by the walls of the second exhaust channel, thus preventing turbulence within the second exhaust channel.

[0021] Furthermore, the annular mounting plate and the first annular cylinder are welded together; or, the annular mounting plate and the first annular cylinder are integrally formed; or, the annular mounting plate and the first annular cylinder are threaded together; or, the annular mounting plate and the first annular cylinder are connected by a fastening mechanism.

[0022] When the annular mounting plate and the first annular cylinder are welded together, the connection strength between the annular mounting plate and the first annular cylinder is guaranteed.

[0023] When the annular mounting plate is integrally formed with the first annular cylinder, the forming method of the annular mounting plate includes: 1. Forming the first annular cylinder and the annular mounting plate by stamping and / or stretching a metal sheet; 2. Folding the first annular cylinder inward to form the annular mounting plate. This design results in low manufacturing costs, simple forming steps, and short processing time for the annular mounting plate and the first annular cylinder.

[0024] When the annular mounting plate is threaded to the first annular cylinder, or when the annular mounting plate is connected to the first annular cylinder via a fastening mechanism, the size of the annular mounting plate is easy to replace.

[0025] Furthermore, the smoke exhaust valve unit is movably disposed on the first end wall of the annular mounting plate; and / or, the smoke isolation valve unit is movably disposed on the last end wall of the annular mounting plate. With this design, the smoke exhaust valve unit and the smoke isolation valve unit can apply opposite forces to the annular mounting plate.

[0026] Furthermore, the base includes a second annular cylinder and a flexible element. The second exhaust channel is formed by the second annular cylinder. The valve body is detachably disposed within the second annular cylinder. The flexible element is disposed within the second annular cylinder, and when the flexible element is disposed within the second annular cylinder, at least a portion of the flexible element is located outside the second annular cylinder. This design allows the flexible element to act as a seal, preventing gas flow between the second annular cylinder and external gases through the area where the flexible element is located.

[0027] Furthermore, the first annular cylinder is provided with a first step, the first step including a first small diameter section, a first large diameter section and a first connecting section for connecting the first small diameter section and the first large diameter section, the annular mounting plate is provided on the inner side of the first small diameter section, the first small diameter section can be inserted into the base, and when the first small diameter section is inserted into the base, the outer wall of the first connecting section can abut against the end wall of the base.

[0028] When the first step includes a first large diameter section, a first small diameter section, and a first connecting section, the function of the first small diameter section is to facilitate the insertion of the first annular cylinder into the second annular cylinder, and the function of the first connecting section is to limit the depth of the first annular cylinder inserted into the base.

[0029] In addition, during the transportation of the exhaust valve, inserting the first small-diameter section into the base can prevent the exhaust valve plate unit from being unable to close the exhaust port and the smoke isolation valve plate unit from being unable to close the smoke isolation port after the first annular cylinder collides and deforms.

[0030] Alternatively, the base may have a first step, which includes a first small diameter section, a first large diameter section, and a first connecting section for connecting the first small diameter section and the first large diameter section. The first small diameter section can be inserted into the first annular cylinder. When the first small diameter section is inserted into the first annular cylinder, the outer wall of the first connecting section can abut against the end wall of the first annular cylinder.

[0031] Furthermore, the second annular cylinder is provided with a second step, the second step including a second small diameter section, a second large diameter section and a second connecting section for connecting the second small diameter section and the second large diameter section, the valve body is detachably disposed on the second small diameter section, the flexible member is fixedly connected to the inner wall of the second connecting section, and the thickness of the flexible member is greater than the axial dimension of the second large diameter section.

[0032] Furthermore, the second annular cylinder is also provided with an annular baffle, which is located on the outside of the second large diameter section. There is an angle between the annular baffle and the air inlet. When there is an angle between the annular baffle and the air inlet, and the annular baffle is in contact with the wall or flue, the first annular cylinder is tilted downwards. The flexible pipe of the range hood used to connect the first annular cylinder is tilted to avoid oil accumulation in the flexible pipe.

[0033] Furthermore, the exhaust valve also includes an air guide shroud, which is disposed on the base. The air guide shroud and the base together form an air guide channel. The cross-section of the lower part of the air guide channel is smaller than the cross-section of the upper part of the air guide channel. The lower end face of the air guide shroud is provided with a stop protrusion. The stop protrusion is used to increase the resistance of the exhaust valve's movement relative to the wall.

[0034] Furthermore, the valve body includes a first annular cylinder, a first annular mounting plate, and a second annular mounting plate. The first annular mounting plate is provided with a first annular through hole, and the smoke isolation port is located at the beginning of the first annular through hole. The second annular mounting plate is provided with a second annular through hole, and the exhaust port is located at the end of the second annular through hole. At least a portion of the smoke isolation port and at least a portion of the exhaust port are projected in the vertical direction within the air inlet, and at least a portion of the smoke isolation port and at least a portion of the exhaust port are projected in the vertical direction within the air outlet.

[0035] When at least part of the smoke inlet and at least part of the exhaust outlet are projected vertically into the air inlet, the fumes can pass through the air inlet, smoke inlet, and exhaust outlet without obstruction. This design avoids the fumes from being blocked by the wall of the first exhaust channel, thus preventing turbulence within the first exhaust channel.

[0036] Furthermore, the valve body and the base are fixedly connected by fasteners; or, the valve body and the base are fixedly connected by a latch; or, the valve body and the base are snap-fitted together; or, the valve body and the base are fixedly connected by rivets; or, the valve body and the base are fixedly connected by a pin; or, the valve body and the base are threaded together; or, the valve body is inserted into the base; or, the base is inserted into the valve body. This design increases the connection strength between the valve body and the base, and facilitates the removal of the valve body from the base.

[0037] The exhaust valve includes:

[0038] The valve body is provided with a first exhaust passage, and the first exhaust passage is provided with an air inlet, a smoke-proof outlet and an exhaust outlet;

[0039] A base, wherein a second exhaust channel is provided on the base and is connected to the first exhaust channel, and an exhaust port is provided on the second exhaust channel; the valve body is detachably provided on the base.

[0040] The smoke exhaust valve plate unit includes at least one smoke exhaust valve plate, each smoke exhaust valve plate is movably disposed on the valve body, and the smoke exhaust valve plate unit moves relative to the valve body to open or close the exhaust port;

[0041] A smoke-proof valve plate unit, the smoke-proof valve plate unit includes at least one smoke-proof valve plate, each smoke-proof valve plate is movably disposed on the base, and the smoke-proof valve plate unit moves relative to the base to open or close the smoke-proof port;

[0042] Alternatively, the exhaust valve includes:

[0043] The valve body is provided with a first exhaust passage, and the first exhaust passage is provided with an air inlet, a smoke-proof outlet and an exhaust outlet;

[0044] A base, wherein a second exhaust channel is provided on the base and is connected to the first exhaust channel, and an exhaust port is provided on the second exhaust channel; the valve body is detachably provided on the base.

[0045] A smoke exhaust valve plate unit, the smoke exhaust valve plate unit including at least one smoke exhaust valve plate, each smoke exhaust valve plate being movably disposed on the base, the smoke exhaust valve plate unit moving relative to the base to open or close the exhaust port;

[0046] A smoke-proof valve plate unit, comprising at least one smoke-proof valve plate, each smoke-proof valve plate being movably disposed on the valve body, the smoke-proof valve plate unit moving relative to the valve body to open or close the smoke-proof port. Attached Figure Description

[0047] Figure 1This is a perspective view of the exhaust valve in a preferred embodiment of the present invention;

[0048] Figure 2 This is a perspective view of the exhaust valve (without the air guide cover) in a preferred embodiment of the present invention;

[0049] Figure 3 This is a front view of the valve body in a preferred embodiment of the present invention;

[0050] Figure 4 for Figure 3 Sectional view at point AA;

[0051] Figure 5 for Figure 4 A magnified view of a section at point B in the middle. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0053] Example 1

[0054] See Figure 1 , Figure 3 and Figure 4 The exhaust valve includes:

[0055] Valve body 11, the valve body 11 is provided with a first exhaust passage 111, the first exhaust passage 111 is provided with an air inlet 10 and an exhaust outlet 30;

[0056] The base 12 has a second exhaust channel 121 that communicates with the first exhaust channel 111. The second exhaust channel 121 has an exhaust port 40. The valve body 11 is detachably mounted on the base 12.

[0057] The smoke exhaust valve unit includes at least one smoke exhaust valve 2, each smoke exhaust valve 2 is movably disposed on the valve body 1, and the smoke exhaust valve unit moves relative to the valve body 11 to open or close the exhaust port 30.

[0058] join Figure 5 The first exhaust passage 111 is also equipped with a smoke-proof opening 20;

[0059] See Figure 2 The exhaust valve also includes:

[0060] The smoke isolation valve plate unit includes at least one smoke isolation valve plate 3. Each smoke isolation valve plate 3 is movably disposed on the valve body 11. The smoke isolation valve plate unit moves relative to the valve body 11 to open or close the smoke isolation port 20. When the exhaust valve plate unit moves relative to the valve body 11 to close the exhaust port 30, and the smoke isolation valve plate unit moves relative to the valve body 11 to close the smoke isolation port 20, the exhaust valve plate unit, the smoke isolation valve plate unit, and the valve body 11 form a smoke isolation chamber (not shown in the attached figure).

[0061] join Figure 5 The valve body 11 includes a first annular cylinder 101 and an annular mounting plate 1014. The annular mounting plate 1014 is provided with an annular through hole. The smoke isolation port 20 is located at the first end of the annular through hole, and the exhaust port 30 is located at the tail end of the annular through hole. When one of the air inlet 10 and the air outlet 40 is parallel to the vertical plane, the projections of at least part of the smoke isolation port 20 and at least part of the exhaust port 30 in the vertical direction are located in the air inlet 10, and the projections of at least part of the smoke isolation port 20 and at least part of the exhaust port 30 in the vertical direction are located in the air outlet 40. In other embodiments of the present invention, the valve body includes a first annular cylinder, a first annular mounting plate, and a second annular mounting plate. The first annular mounting plate is provided with a first annular through hole, and the smoke isolation port is located at the beginning of the first annular through hole. The second annular mounting plate is provided with a second annular through hole, and the exhaust port is located at the end of the second annular through hole. When one of the air inlet and the air outlet is parallel to the vertical plane, the projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port in the vertical direction are located inside the air inlet, and the projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port in the vertical direction are located inside the air outlet.

[0062] In this embodiment, the annular mounting plate 1014 is preferably integrally formed with the first annular cylinder 101. In other embodiments of the present invention, the annular mounting plate and the first annular cylinder are welded together; or, the annular mounting plate and the first annular cylinder are threaded together; or, the annular mounting plate and the first annular cylinder are connected by a fastening mechanism, the fastening mechanism including but not limited to one or more of screws, nuts, bolts and studs.

[0063] In this embodiment, the smoke exhaust valve unit is movably disposed on the first end wall of the annular mounting plate 1014, and the smoke isolation valve unit is movably disposed on the last end wall of the annular mounting plate 1014. In other embodiments of the present invention, the smoke exhaust valve unit is movably disposed on the first end wall of the annular mounting plate, and the smoke isolation valve unit is movably disposed on the valve body; or, the smoke isolation valve unit is movably disposed on the last end wall of the annular mounting plate, and the smoke exhaust valve unit is movably disposed on the valve body; or, the smoke isolation valve unit is movably disposed on the valve body, and the smoke exhaust valve unit is movably disposed on the valve body.

[0064] join Figure 1 and Figure 4The base 12 includes a second annular cylinder 102 and a flexible element (not shown in the figure). The second exhaust channel 121 is surrounded by the second annular cylinder 102. The valve body 11 is detachably disposed on the second annular cylinder 102. The flexible element is disposed on the second annular cylinder 102. When the flexible element is disposed on the second annular cylinder 102, at least part of the flexible element is located outside the second annular cylinder 102.

[0065] like Figure 4 As shown, the second annular cylinder 102 is provided with a second step, which includes a second small diameter section 1021, a second large diameter section 1023, and a second connecting section 1022 for connecting the second small diameter section 1021 and the second large diameter section 1023. The valve body 11 is detachably provided on the second small diameter section 1021. The flexible member is fixedly connected to the inner wall of the second connecting section 1022, and the thickness of the flexible member is greater than the axial dimension of the second large diameter section 1023.

[0066] See Figure 4 Preferably, the second annular cylinder 102 is further provided with an annular baffle 1024, the annular baffle 1023 is located on the outside of the second large diameter section 1023, and there is an angle α between the annular baffle 1024 and the air inlet 10.

[0067] See Figure 5 The first annular cylinder 101 has a first step, which includes a first small-diameter section 1013, a first large-diameter section 1011, and a first connecting section 1012 for connecting the first small-diameter section 1013 and the first large-diameter section 1011. An annular mounting plate 1014 is disposed inside the first small-diameter section 1013. The first small-diameter section 1013 can be inserted into the base 12. When the first small-diameter section 1013 is inserted into the base 12, the outer wall of the first connecting section 1012 can abut against the end wall of the base 12. In other embodiments of the present invention, the base has a first step, which includes a first small-diameter section, a first large-diameter section, and a first connecting section for connecting the first small-diameter section and the first large-diameter section. The first small-diameter section can be inserted into the first annular cylinder. When the first small-diameter section is inserted into the first annular cylinder, the outer wall of the first connecting section can abut against the end wall of the first annular cylinder.

[0068] See Figure 1 The exhaust valve also includes an air guide shroud 6, which is located on the base 12. The air guide shroud 6 and the base 12 together form an air guide channel. The cross-section of the lower part of the air guide channel is smaller than the cross-section of the upper part of the air guide channel. The lower end face of the air guide shroud 6 is provided with a stop protrusion.

[0069] join Figure 1In this embodiment, the valve body 11 and the base 12 are preferably fixedly connected by a latch 5. In other embodiments of the present invention, the valve body and the base are fixedly connected by fasteners; or, the valve body and the base are snap-fit ​​connected; or, the valve body and the base are fixedly connected by rivets; or, the valve body and the base are fixedly connected by pins; or, the valve body and the base are threadedly connected; or, the valve body is inserted into the base; or, the base is inserted into the valve body.

[0070] In this embodiment, the smoke exhaust valve unit includes two smoke exhaust valves 2, each smoke exhaust valve 2 being rotatably connected to the valve body 1; the smoke isolation valve unit includes two smoke isolation valves 3, each smoke isolation valve 3 being rotatably connected to the valve body 1. In other embodiments of the present invention, the smoke exhaust valve unit may include one, three, or five smoke exhaust valves, each smoke exhaust valve being rotatably connected to one end of the first connecting rod, and the other end of the first connecting rod being rotatably connected to the valve body; the smoke isolation valve unit may include one, six, or nine smoke isolation valves, each smoke isolation valve being rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod being rotatably connected to the valve body.

[0071] Example 2

[0072] In this embodiment, the exhaust valve includes:

[0073] The valve body is provided with a first exhaust passage, which is provided with an air inlet, a smoke-proof outlet and an exhaust outlet;

[0074] The base has a second exhaust channel that communicates with the first exhaust channel, and the second exhaust channel has an air outlet. The valve body is detachably mounted on the base.

[0075] The smoke exhaust valve plate unit includes at least one smoke exhaust valve plate, each smoke exhaust valve plate is movably disposed on the valve body, and the smoke exhaust valve plate unit moves relative to the valve body to open or close the exhaust port;

[0076] The smoke isolation valve plate unit includes at least one smoke isolation valve plate, each smoke isolation valve plate is movably disposed on the base, and the smoke isolation valve plate unit moves relative to the base to open or close the smoke isolation port.

[0077] When one of the air inlet and the air outlet is parallel to a vertical plane, the projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port in the vertical direction are located inside the air inlet, and the projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port in the vertical direction are located inside the air outlet.

[0078] In this embodiment, the valve body includes a first annular cylinder and an annular mounting plate.

[0079] In this embodiment, the annular mounting plate and the first annular cylinder are preferably integrally formed. In other embodiments of the present invention, the annular mounting plate and the first annular cylinder are welded together; or, the annular mounting plate and the first annular cylinder are threaded together; or, the annular mounting plate and the first annular cylinder are connected by a fastening mechanism, the fastening mechanism including but not limited to one or more of screws, nuts, bolts and studs.

[0080] In this embodiment, the base includes a second annular cylinder and a flexible member. The second exhaust channel is surrounded by the second annular cylinder. The valve body is detachably disposed on the second annular cylinder. The flexible member is disposed on the second annular cylinder. When the flexible member is disposed on the second annular cylinder, at least a portion of the flexible member is located outside the second annular cylinder.

[0081] In this embodiment, a second step is provided on the second annular cylinder. The second step includes a second small diameter section, a second large diameter section, and a second connecting section for connecting the second small diameter section and the second large diameter section. The valve body is detachably disposed on the second small diameter section. The flexible member is fixedly connected to the inner wall of the second connecting section, and the thickness of the flexible member is greater than the axial dimension of the second large diameter section.

[0082] Preferably, the second annular cylinder is further provided with an annular baffle, which is located on the outside of the second large diameter section, and there is an angle between the annular baffle and the air inlet.

[0083] In this embodiment, a first step is provided on the first annular cylinder. The first step includes a first small-diameter section, a first large-diameter section, and a first connecting section for connecting the first small-diameter section and the first large-diameter section. An annular mounting plate is disposed inside the first small-diameter section. The first small-diameter section can be inserted into the base. When the first small-diameter section is inserted into the base, the outer wall of the first connecting section can abut against the end wall of the base. In other embodiments of the present invention, a first step is provided on the base. The first step includes a first small-diameter section, a first large-diameter section, and a first connecting section for connecting the first small-diameter section and the first large-diameter section. The first small-diameter section can be inserted into the first annular cylinder. When the first small-diameter section is inserted into the first annular cylinder, the outer wall of the first connecting section can abut against the end wall of the first annular cylinder.

[0084] In this embodiment, the exhaust valve also includes an air guide shroud, which is disposed on the base. After the air guide shroud is disposed on the base, the two form an air guide channel. The cross-section below the air guide channel is smaller than the cross-section above the air guide channel. The lower end face of the air guide shroud is provided with a stop protrusion.

[0085] In this embodiment, the valve body and the base are preferably fixedly connected by a latch. In other embodiments of the invention, the valve body and the base are fixedly connected by fasteners; or, the valve body and the base are snap-fit ​​connected; or, the valve body and the base are fixedly connected by rivets; or, the valve body and the base are fixedly connected by pins; or, the valve body and the base are threaded together; or, the valve body is inserted into the base; or, the base is inserted into the valve body. Embodiment 3

[0086] In this embodiment, the exhaust valve includes:

[0087] The valve body is provided with a first exhaust passage, which is provided with an air inlet, a smoke-proof outlet and an exhaust outlet;

[0088] The base has a second exhaust channel that communicates with the first exhaust channel, and the second exhaust channel has an air outlet. The valve body is detachably mounted on the base.

[0089] The smoke exhaust valve plate unit includes at least one smoke exhaust valve plate, each smoke exhaust valve plate is movably disposed on the base, and the smoke exhaust valve plate unit moves relative to the base to open or close the exhaust port;

[0090] The smoke isolation valve plate unit includes at least one smoke isolation valve plate, each smoke isolation valve plate is movably disposed on the valve body, and the smoke isolation valve plate unit moves relative to the valve body to open or close the smoke isolation port.

[0091] When one of the air inlet and the air outlet is parallel to a vertical plane, the projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port in the vertical direction are located inside the air inlet, and the projections of at least a portion of the smoke isolation port and at least a portion of the exhaust port in the vertical direction are located inside the air outlet.

[0092] In this embodiment, the valve body includes a first annular cylinder and an annular mounting plate.

[0093] In this embodiment, the annular mounting plate and the first annular cylinder are preferably integrally formed. In other embodiments of the present invention, the annular mounting plate and the first annular cylinder are welded together; or, the annular mounting plate and the first annular cylinder are threaded together; or, the annular mounting plate and the first annular cylinder are connected by a fastening mechanism, the fastening mechanism including but not limited to one or more of screws, nuts, bolts and studs.

[0094] In this embodiment, the base includes a second annular cylinder and a flexible member. The second exhaust channel is surrounded by the second annular cylinder. The valve body is detachably disposed on the second annular cylinder. The flexible member is disposed on the second annular cylinder. When the flexible member is disposed on the second annular cylinder, at least a portion of the flexible member is located outside the second annular cylinder.

[0095] In this embodiment, a second step is provided on the second annular cylinder. The second step includes a second small diameter section, a second large diameter section, and a second connecting section for connecting the second small diameter section and the second large diameter section. The valve body is detachably disposed on the second small diameter section. The flexible member is fixedly connected to the inner wall of the second connecting section, and the thickness of the flexible member is greater than the axial dimension of the second large diameter section.

[0096] Preferably, the second annular cylinder is further provided with an annular baffle, which is located on the outside of the second large diameter section, and there is an angle between the annular baffle and the air inlet.

[0097] In this embodiment, a first step is provided on the first annular cylinder. The first step includes a first small-diameter section, a first large-diameter section, and a first connecting section for connecting the first small-diameter section and the first large-diameter section. An annular mounting plate is disposed inside the first small-diameter section. The first small-diameter section can be inserted into the base. When the first small-diameter section is inserted into the base, the outer wall of the first connecting section can abut against the end wall of the base. In other embodiments of the present invention, a first step is provided on the base. The first step includes a first small-diameter section, a first large-diameter section, and a first connecting section for connecting the first small-diameter section and the first large-diameter section. The first small-diameter section can be inserted into the first annular cylinder. When the first small-diameter section is inserted into the first annular cylinder, the outer wall of the first connecting section can abut against the end wall of the first annular cylinder.

[0098] In this embodiment, the exhaust valve also includes an air guide shroud, which is disposed on the base. After the air guide shroud is disposed on the base, the two form an air guide channel. The cross-section below the air guide channel is smaller than the cross-section above the air guide channel. The lower end face of the air guide shroud is provided with a stop protrusion.

[0099] In this embodiment, the valve body and the base are preferably fixedly connected by a latch. In other embodiments of the present invention, the valve body and the base are fixedly connected by fasteners; or, the valve body and the base are snap-fit ​​connected; or, the valve body and the base are fixedly connected by rivets; or, the valve body and the base are fixedly connected by pins; or, the valve body and the base are threaded together; or, the valve body is inserted into the base; or, the base is inserted into the valve body.

[0100] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. An exhaust valve, characterized in that... include: The valve body includes a first exhaust channel with an air inlet, a smoke-proof port, and an exhaust port. The valve body comprises a first annular cylinder and an annular mounting plate. The annular mounting plate has an annular through hole. The smoke-proof port is located at the first end of the annular through hole, and the exhaust port is located at the tail end of the annular through hole. The first annular cylinder has a first step, which includes a first small-diameter section, a first large-diameter section, and a first connecting section for connecting the first small-diameter section and the first large-diameter section. The annular mounting plate is located inside the first small-diameter section. The first small-diameter section can be inserted into a base. When the first small-diameter section is inserted into the base, the outer wall of the first connecting section abuts against the end wall of the base. A base, wherein a second exhaust channel is provided on the base and is connected to the first exhaust channel, and an exhaust port is provided on the second exhaust channel; the valve body is detachably provided on the base. A smoke exhaust valve plate unit, the smoke exhaust valve plate unit including at least one smoke exhaust valve plate, each smoke exhaust valve plate being movably disposed on the valve body, the smoke exhaust valve plate unit moving relative to the valve body to open or close the exhaust port; A smoke-proof valve plate unit includes at least one smoke-proof valve plate, each smoke-proof valve plate being movably disposed on the valve body. The smoke-proof valve plate unit moves relative to the valve body to open or close the smoke-proof port. When the smoke exhaust valve plate unit moves relative to the valve body to close the exhaust port, and the smoke-proof valve plate unit moves relative to the valve body to close the smoke-proof port, the smoke exhaust valve plate unit, the smoke-proof valve plate unit, and the valve body form a smoke-proof cavity.

2. The exhaust valve as described in claim 1, characterized in that, The vertical projections of at least a portion of the smoke inlet and at least a portion of the exhaust outlet are located within the air inlet, and the vertical projections of at least a portion of the smoke inlet and at least a portion of the exhaust outlet are located within the air outlet.

3. The exhaust valve as described in claim 2, characterized in that, The annular mounting plate is welded to the first annular cylinder; or, the annular mounting plate is integrally formed with the first annular cylinder; or, the annular mounting plate is threaded to the first annular cylinder; or, the annular mounting plate is connected to the first annular cylinder by a fastening mechanism. The smoke exhaust valve plate unit is movably disposed on the first end wall of the annular mounting plate, and the smoke isolation valve plate unit is movably disposed on the last end wall of the annular mounting plate. The base includes a second annular cylinder and a flexible element. The second exhaust channel is surrounded by the second annular cylinder. The valve body is detachably disposed on the second annular cylinder. The flexible element is disposed on the second annular cylinder. When the flexible element is disposed on the second annular cylinder, at least a portion of the flexible element is located outside the second annular cylinder.

4. The exhaust valve as described in claim 2, characterized in that, The base is provided with a first step, which includes a first small diameter section, a first large diameter section, and a first connecting section for connecting the first small diameter section and the first large diameter section. The first small diameter section can be inserted into the first annular cylinder. When the first small diameter section is inserted into the first annular cylinder, the outer wall of the first connecting section can abut against the end wall of the first annular cylinder.

5. The exhaust valve as described in claim 3, characterized in that, The second annular cylinder is provided with a second step, the second step includes a second small diameter section, a second large diameter section and a second connecting section for connecting the second small diameter section and the second large diameter section. The valve body is detachably provided on the second small diameter section. The flexible member is fixedly connected to the inner wall of the second connecting section, and the thickness of the flexible member is greater than the axial dimension of the second large diameter section. The second annular cylinder is also provided with an annular baffle, which is located on the outside of the second large diameter section, and there is an angle between the annular baffle and the air inlet.

6. The exhaust valve as described in claim 1, characterized in that, The exhaust valve also includes an air guide shroud, which is disposed on the base. The air guide shroud and the base together form an air guide channel. The cross-section below the air guide channel is smaller than the cross-section above the air guide channel. The lower end face of the air guide shroud is provided with a stop protrusion.

7. The exhaust valve as described in claim 1, characterized in that, The valve body and the base are fixedly connected by fasteners.

8. The exhaust valve as described in claim 1, characterized in that, The valve body and the base are fixedly connected by a latch; or, the valve body and the base are snap-fit ​​connected; or, the valve body and the base are fixedly connected by a rivet; or, the valve body and the base are fixedly connected by a pin; or, the valve body and the base are threadedly connected; or, the valve body is inserted into the base; or, the base is inserted into the valve body.

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