Flow equalizing structure and exhaust valve
By designing a movable flow equalization hood and material discharge port structure, the problem of foreign matter accumulation in the flow equalization channel was solved, achieving effective smoke extraction and normal operation of the exhaust valve.
Patent Information
- Application Number
- CN202511128437.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2025-11-18
AI Technical Summary
After a period of use, small stones and other solid foreign objects will fall into the flow equalization channel of the flow equalization structure, and liquid foreign objects formed by the cooling of oil fumes will be stored, affecting the exhaust effect.
Design a flow equalization structure including at least two flow equalization hoods, each of which can move horizontally to form a flow equalization channel. The first flow equalization hood is provided with a material discharge port, which removes foreign objects by means of gravity, oil fume emission and blowing of oil fume in the flue. The material discharge port is not perpendicular to or is misaligned with the first opening to optimize the smoke exhaust effect.
It effectively removes foreign objects from the flow equalization channel, improves the smoke exhaust effect, prevents the exhaust port from being unable to open properly due to the direct blowing of oil fumes from the flue onto the valve plate, and enhances the smoke exhaust capacity of the exhaust valve.
Smart Images
Figure CN120969496A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a flow equalization structure and an exhaust valve. Background Technology
[0002] The building includes flues and several exhaust valves. Each floor's kitchen is equipped with a range hood, which is connected to the flue via an exhaust valve. Because the effectiveness of exhaust fumes from kitchens on different floors in venting into the flue varies (specifically: the lower the floor, the worse the exhaust vent's effect; the higher the floor, the better the effect), this means that, assuming the range hood power is the same across all floors, the fume extraction effect in kitchens on lower floors is lower than that in kitchens on higher floors. Therefore, each exhaust valve is equipped with a flow equalization structure. This structure adjusts the fume extraction effect of the exhaust valves on different floors by changing the area of the flow equalization outlet on the flow equalization channel.
[0003] However, after a period of use, small stones and other solid foreign objects will fall into the flow equalization channel of the flow equalization structure, and liquid foreign objects formed by the cooling of oil fumes will also be stored in the flow equalization channel of the flow equalization structure. Summary of the Invention
[0004] The problem to be solved by this invention is to provide a flow equalization structure and an exhaust valve to solve the problem of foreign objects in the flow equalization channel.
[0005] To address the above problems, the present invention provides the following technical solution:
[0006] The flow equalization structure includes at least two flow equalization hoods, each flow equalization hood is provided with a flow equalization cavity, adjacent flow equalization hoods are movably connected, each flow equalization hood can move horizontally relative to its adjacent flow equalization hood, and after all adjacent flow equalization hoods are movably connected, the flow equalization cavities on all flow equalization hoods are spliced together to form a flow equalization channel.
[0007] The flow equalization hood at the first end is used to connect the valve body of the exhaust valve. The flow equalization hood at the first end includes a hood body, a flow equalization cavity is provided in the hood body, a first opening and a second opening corresponding to the first opening are located on the side wall of the flow equalization cavity, and a flow equalization port is provided on the top wall of the flow equalization cavity. The flow equalization hood at the first end is provided with a leakage port for discharging foreign objects located in the flow equalization cavity.
[0008] In this invention, when a material discharge port is provided on the flow equalization hood at the first end, foreign objects in the flow equalization channel can be discharged to the outside of the flow equalization structure in three ways: 1. Both solid and liquid foreign objects can fall to the outside of the flow equalization structure from the material discharge port due to their own gravity; 2. Since the flow equalization hood at the first end is connected to an exhaust valve, after the oil fumes emitted by the range hood are discharged into the flow equalization channel through the exhaust port, the oil fumes can blow the solid and liquid foreign objects in the flow equalization channel to the outside of the flow equalization structure through the material discharge port; 3. The oil fumes flowing from bottom to top in the flue can be blown into the flow equalization channel through the material discharge port, and the solid foreign objects in the flow equalization channel can be blown to the outside of the flow equalization structure through the flow equalization port.
[0009] Furthermore, the discharge port is not perpendicular to the first opening.
[0010] When the material leakage port is not perpendicular to the first opening, the oil fumes flowing from bottom to top in the flue can be blown into the flow equalization channel from the material leakage port, thereby blowing foreign objects in the flow equalization channel out of the flow equalization structure through the flow equalization port.
[0011] Furthermore, at least a portion of the discharge port corresponds to the first opening; or, the discharge port is offset from the first opening.
[0012] When at least some of the material leakage ports correspond to the first opening, the beneficial effects include: since at least some of the material leakage ports correspond to the first opening, after the oil fumes of the range hood are blown into the flow equalization channel through the exhaust port on the exhaust valve, the oil fumes can directly blow the foreign objects in the flow equalization channel out of the flow equalization structure through the material leakage ports.
[0013] When the discharge port is misaligned with the first opening, the beneficial effects include: because the discharge port is misaligned with the first opening, the oil fumes flowing from bottom to top in the flue will not directly blow the valve plate to close the exhaust port through the discharge port.
[0014] The phrases "at least part of the discharge port corresponds to the first opening" and "the discharge port is offset from the first opening" are adaptively selected based on the exhaust volume of the range hood and the exhaust volume of the flue. Specifically: when the exhaust volume of the flue is less than the exhaust volume of the range hood, at least part of the discharge port corresponds to the first opening, so that the fumes from the range hood directly blow foreign objects in the flow equalization channel out of the discharge port; when the exhaust volume of the flue is greater than the exhaust volume of the range hood, the discharge port is offset from the first opening, so as to avoid the fumes from the flue directly blowing onto the valve plate, causing the exhaust port to be unable to open normally.
[0015] Furthermore, the flow equalization hood at the head end also includes an inclined guide plate, which is located on the hood body, and the material outlet is located between the guide plate and the hood body. After the oil fumes cool, they will condense into liquid oil. The liquid oil is a liquid foreign object, which can flow along the guide plate from the material outlet to the outside of the flow equalization channel under its own gravity.
[0016] Furthermore, the discharge port and the flow equalization port do not correspond; and / or, at least part of the guide plate is located below the bottom wall of the hood. When the discharge port and the flow equalization port do not correspond, the oil fumes flowing upward in the flue cannot directly enter the flow equalization channel through the discharge port. If the oil fumes flowing upward in the flue directly enter the flow equalization channel through the discharge port, they will merge with the oil fumes discharged from the exhaust port in the flow equalization channel. The merging of the two streams of oil fumes will cause a certain amount of turbulence in the flow equalization channel, thereby affecting the smoke exhaust effect of the flow equalization channel.
[0017] Furthermore, a discharge port is provided on the bottom wall of the flow equalization chamber of the hood. The discharge port is located on the bottom wall of the flow equalization chamber to reduce the height of the discharge port on the hood, so that foreign liquids can flow out of the flow equalization hood through the discharge port.
[0018] The exhaust valve includes a valve body, at least one valve plate, and a flow equalization structure. The valve body is provided with at least one exhaust port. Each valve plate is movably disposed on the valve body and is used to open or close one of the exhaust ports. The flow equalization structure is any flow equalization structure described in any technical solution. The flow equalization shroud at the head end is disposed on the valve body.
[0019] Furthermore, the bottom wall of the enclosure is located above the exhaust port, and the bottom wall of the enclosure is inclined towards the exhaust port. When the bottom wall of the enclosure is located above the exhaust port, the flow equalization channel has the ability to automatically discharge liquid foreign objects.
[0020] Furthermore, the valve body is provided with an oil receiving groove, and the vent and the leakage port are located above the oil receiving groove, with at least a portion of the vent located above the leakage port. This structure is used to prevent foreign liquids in the flow equalization channel from flowing directly to the outside of the vent valve through the vent.
[0021] When the vent and the drain are located above the oil receiving tank, and at least part of the vent is located above the drain, the height of the liquid foreign matter in the flow equalization channel will not exceed the vent. That is, the liquid oil will be discharged outside the flow equalization channel through the drain before exceeding the height of the vent.
[0022] Furthermore, the first opening is located between the vent and the discharge port, at least a portion of the discharge port corresponds to the vent, and the area of the discharge port is smaller than the area of the vent.
[0023] When the area of the material inlet is smaller than the area of the exhaust outlet, a Bernoulli effect will occur at the material inlet, meaning that negative pressure will be generated at the material inlet due to the oil fumes. This structure enhances the smoke extraction effect of the flow equalization structure.
[0024] Furthermore, the flow equalization hood at the first end is detachably mounted on the valve body, and the flow equalization hood at the first end is located at the bottom of the flow equalization structure.
[0025] When the bottom wall of the hood is tilted towards the exhaust port and the flow equalization hood at the head is located at the bottom of the flow equalization structure, the liquid foreign matter in the flow equalization channel flows towards the flow equalization cavity of the hood under its own gravity. Since the leakage port is located between the guide plate and the bottom wall of the hood, and at least part of the guide plate is located below the bottom wall of the hood, the liquid foreign matter located in the flow equalization cavity of the hood flows out of the flow equalization structure through the leakage port under its own gravity. Attached Figure Description
[0026] Figure 1 This is a first perspective view of the exhaust valve and flue in a preferred embodiment of the present invention;
[0027] Figure 2 This is a second perspective view of the exhaust valve and flue in a preferred embodiment of the present invention;
[0028] Figure 3 This is a cross-sectional view of the exhaust valve and flue in a preferred embodiment of the present invention;
[0029] Figure 4 This is a perspective view of the exhaust valve in a preferred embodiment of the present invention;
[0030] Figure 5 This is a perspective view of the flow equalization structure in a preferred embodiment of the present invention;
[0031] Figure 6 This is a perspective view of the flow equalization shroud located at the head end in a preferred embodiment of the present invention;
[0032] Figure 7 This is a perspective view of the exhaust valve in a preferred embodiment of the present invention;
[0033] Figure 8 This is a perspective view of the guide tube in a preferred embodiment of the present invention;
[0034] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;
[0035] Figure 10 This is a top view of the guide tube in a preferred embodiment of the present invention;
[0036] Figure 11 for Figure 10 A magnified view of a section at point B in the middle;
[0037] Figure 12 This is a perspective view of the anti-rotation plate in a preferred embodiment of the present invention;
[0038] Figure 13 This is a perspective view of the valve body and the guide pipe in a preferred embodiment of the present invention;
[0039] Figure 14 This is a perspective view of the valve body and valve plate in a preferred embodiment of the present invention;
[0040] Figure 15 This is a perspective view of the valve body, valve plate, and guide tube in a preferred embodiment of the present invention;
[0041] Figure 16 for Figure 15 A magnified view of a section at point C. Detailed Implementation
[0042] 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.
[0043] See Figure 1 The flow equalization structure 100 includes at least two flow equalization hoods, each with a flow equalization cavity. Adjacent flow equalization hoods are movably connected, and each hood can move horizontally relative to its adjacent hood. After all adjacent flow equalization hoods are movably connected, the flow equalization cavities on all hoods are joined to form a flow equalization channel 400. Figure 3 and Figure 5 As can be seen, the flow equalization structure 100 of the present invention includes a first flow equalization hood 1 and a second flow equalization hood 2. The first flow equalization hood 1 is provided with a first flow equalization cavity 10, and the second flow equalization hood 2 is provided with a second flow equalization cavity 20. The first flow equalization hood 1 and the second flow equalization hood 2 are movably connected. The second flow equalization hood 2 can move horizontally relative to the first flow equalization hood 1. After the first flow equalization hood 1 and the second flow equalization hood 2 are movably connected, the first flow equalization cavity 10 and the second flow equalization cavity 20 are spliced together to form a flow equalization channel 400.
[0044] Of course, one preferred embodiment of the flow equalization structure includes two flow equalization hoods. In other embodiments of the present invention, the flow equalization structure may include three flow equalization hoods, four flow equalization hoods, or six flow equalization hoods.
[0045] In this invention, the "flow equalization hood located at the first end" is the first flow equalization hood 1. The first flow equalization hood 1 is used to connect the valve body 2001 of the exhaust valve 200. The first flow equalization hood 1 includes a hood body 11, a first flow equalization cavity 10 disposed on the hood body 11, a first opening 101 and a second opening 102 corresponding to the first opening 101 on the side wall of the hood body 11, and a flow equalization port 103 provided on the top wall of the hood body 11 located in the first flow equalization cavity 10; the first flow equalization hood 1 is provided with a leakage port 30 for discharging foreign objects located in the first flow equalization cavity 10.
[0046] In this invention, when the first flow equalization hood 1 is provided with a material discharge port 30, foreign objects in the flow equalization channel 400 can be discharged to the outside of the flow equalization structure 100 in three ways. The three ways include: 1. Solid and liquid foreign objects can fall to the outside of the flow equalization structure 100 from the material discharge port 30 by their own gravity; 2. Since the first flow equalization hood 1 is connected to the exhaust valve 200, after the oil fumes emitted by the range hood are discharged into the flow equalization channel 400 through the exhaust port 2000, the oil fumes can blow the solid and liquid foreign objects in the flow equalization channel 400 to the outside of the flow equalization structure 100 through the material discharge port 30; 3. The oil fumes flowing from bottom to top in the flue 300 can be blown into the flow equalization channel 400 through the material discharge port 30, and the solid foreign objects in the flow equalization channel 400 can be blown to the outside of the flow equalization structure 100 through the flow equalization port 103.
[0047] In this invention, the material leakage port 30 is not perpendicular to the first opening 101; when the material leakage port 30 is not perpendicular to the first opening 101, the oil fumes flowing from bottom to top in the flue can be blown into the flow equalization channel 400 from the material leakage port 30, thereby blowing foreign objects in the flow equalization channel 400 out of the flow equalization structure 100 through the flow equalization port 103.
[0048] from Figure 3 As can be seen, the discharge port 30 is parallel to the first opening 101. This structure allows the fumes from the flue to be directly blown from the discharge port 30 to the valve plate 2002 to close the exhaust port 2000. Then, the fumes from the flue flow back to the flow equalization channel 400 through the valve plate 2022, and foreign objects located in the flow equalization channel 400 are blown to the outside of the flow equalization structure 100 through the flow equalization port 103. Since most of the liquid foreign objects in the flow equalization channel 400 are liquid oil (formed by cooling the fumes), the fumes can usually be blown to the outside of the flow equalization structure 100 by blowing the liquid foreign objects. However, the blowing of the fumes can reduce the amount of fumes adhering to the flow equalization channel 400.
[0049] from Figure 3It can be seen that at least some of the material leakage ports 30 correspond to the first opening 101. When at least some of the material leakage ports 30 correspond to the first opening 101, the beneficial effects include: since at least some of the material leakage ports 30 correspond to the first opening 101, after the oil fumes of the range hood are blown into the flow equalization channel 400 through the exhaust port 2000 on the exhaust valve 200, the oil fumes can directly blow the foreign objects in the flow equalization channel 400 out of the flow equalization structure 100 through the material leakage ports 30.
[0050] Combination Figure 3 and Figure 4 It can be seen that the first opening 101 is located between the exhaust port 2000 and the material leakage port 30, and at least part of the material leakage port 30 corresponds to the exhaust port 2000. The area of the material leakage port 30 is less than the area of the exhaust port 2000. In this invention, the cross-sectional area of the first opening 101 is greater than the area of the exhaust port 2000, and the cross-sectional area of the exhaust pipe on the range hood is greater than the area of the exhaust port 2000. A Bernoulli effect is formed at the exhaust port 2000, generating a primary negative pressure. The cross-sectional area of the first opening 101 is greater than the area of the material leakage port 30, and the cross-sectional area of the exhaust channel on the flue 300 is greater than the area of the material leakage port 30. A Bernoulli effect is formed at the material leakage port 30, generating a secondary negative pressure. When the area of the material leakage port 30 is less than the area of the exhaust port 2000, the negative pressure value at the material leakage port 30 is greater than the negative pressure value at the exhaust port 2000. Since the negative pressure value at the material leakage port 30 is greater than the negative pressure value at the exhaust port 2000, the material leakage port 30 provides adsorption force to the exhaust port 2000 during the exhaust process of the exhaust valve 200. This structure will increase the exhaust effect of the exhaust valve 200 at the exhaust port 2000.
[0051] Preferably, when the bottom wall of the hood 11 is tilted toward the exhaust port 2000, the oil fumes moving upward in the flue 300 flow away from the exhaust port 2000 along the bottom wall of the hood 11. This structure avoids the oil fumes in the flue from moving upward into the equalization channel 400 as much as possible, that is, it avoids the oil fumes in the flue 300 from merging with the oil fumes of the range hood in the equalization channel 400 (especially avoiding the oil fume flow rate in the flue 300 from being about the same as the oil fume volume of the range hood), so that the two streams of oil fumes will cause turbulence in the equalization channel 400.
[0052] In other embodiments of the present invention, the discharge port 30 is misaligned with the first opening 101. When the discharge port 30 is misaligned with the first opening 101, the beneficial effects include: because the discharge port 30 is misaligned with the first opening 101, the oil fumes flowing from bottom to top in the flue will not directly blow the valve plate 2002 to close the exhaust port 2000 through the discharge port 30.
[0053] The terms "at least part of the discharge port 30 corresponds to the first opening 101" and "the discharge port 30 and the first opening 101 are misaligned" are adaptively selected based on the exhaust volume of the range hood and the exhaust volume of the flue 300. Specifically: when the exhaust volume of the flue 300 is less than the exhaust volume of the range hood, at least part of the discharge port 30 corresponds to the first opening 101 so that the oil fumes of the range hood can directly blow foreign objects in the flow equalization channel 400 out of the discharge port 30; when the exhaust volume of the flue 300 is greater than the exhaust volume of the range hood, the discharge port 30 and the first opening 101 are misaligned to prevent the oil fumes of the flue 300 from directly blowing onto the valve plate 2002, which would prevent the exhaust port 2000 from opening normally.
[0054] join Figure 2 , Figure 5 and Figure 6 The first flow equalization hood 1 also includes an inclined guide plate 12, which is located on the hood body 11, and the discharge port 30 is located between the guide plate 12 and the hood body 11. After the oil fumes cool, they will condense into liquid oil. The liquid oil is a liquid foreign object, which can flow along the guide plate 12 from the discharge port 30 to the outside of the flow equalization channel 400 under its own gravity.
[0055] from Figure 6 It can be seen that the material discharge port 30 does not correspond to the flow equalization port 103; and / or, at least part of the guide plate 12 is located below the bottom wall of the cover 11. The material discharge port 30 does not correspond to the flow equalization port 103. This structure avoids the gas medium (the gas medium is oil fume) at the material discharge port 30 from directly affecting the gas medium at the flow equalization port 103, that is, it reduces the adsorption of the gas medium at the material discharge port 30 by the gas medium at the flow equalization port 103.
[0056] When the discharge port 30 and the flow equalization port 103 do not correspond, the oil fumes flowing upward in the flue 300 cannot directly enter the flow equalization channel 400 through the discharge port 30. If the oil fumes flowing upward in the flue 300 directly enter the flow equalization channel 400 through the discharge port 30, they will merge with the oil fumes discharged from the exhaust port 2000 in the flow equalization channel 400. The merging of the two streams of oil fumes will cause a certain amount of turbulence in the flow equalization channel 400, thereby affecting the smoke exhaust effect of the flow equalization channel 400.
[0057] In this invention, the guide plate 12 is located below the cover 11. When the guide plate 12 is located below the cover 11, the discharge port 30 is located below the bottom wall of the cover 11. This structure is used to reduce the height of the discharge port 30 on the cover 11, so that liquid foreign objects can flow through the discharge port 30 to the outside of the first flow equalization cover 1.
[0058] In other embodiments of the present invention, the cover 11 is provided with a discharge port 30 on the bottom wall of the first flow equalization cavity 10. The discharge port 30 is provided on the bottom wall of the first flow equalization cavity 10 to reduce the height of the discharge port 30 on the cover 11, so that liquid foreign objects can flow through the discharge port 30 to the outside of the first flow equalization cover 1.
[0059] join Figure 3 and Figure 4 The exhaust valve 200 includes a valve body 2001, at least one valve plate 2002, and a flow equalization structure. The valve body 2001 is provided with at least one exhaust port 2000. Each valve plate 2002 is movably disposed on the valve body 2001 and is used to open or close one of the exhaust ports 2000. The flow equalization structure is the flow equalization structure 100 described in Embodiment 1, and the flow equalization shroud at the head end is disposed on the valve body 2001.
[0060] join Figure 3 The valve body 2001 is provided with an oil receiving groove 2004, and the vent 2000 and the drain port 30 are located above the oil receiving groove 2004, with at least a portion of the vent 2000 located above the drain port 30. This structure is used to prevent foreign liquids in the flow equalization channel 400 from flowing directly to the outside of the vent valve 200 through the vent 2000.
[0061] When the exhaust port 2000 and the discharge port 30 are located above the oil receiving tank 2004, and the exhaust port 2000 is located above the discharge port 30, the height of the liquid foreign matter in the flow equalization channel 400 will not exceed the exhaust port 2000. That is, before the liquid oil exceeds the height of the exhaust port 2000, it will be discharged to the outside of the flow equalization channel 400 through the discharge port 30.
[0062] Preferably, when the bottom wall of the cover 11 is below the exhaust port 2000 and at least part of the guide plate 12 is below the bottom wall of the cover 11, the height of the liquid foreign matter in the flow equalization channel 400 will not exceed the exhaust port 2000, that is, before the liquid oil exceeds the height of the exhaust port 2000, it will be discharged to the outside of the flow equalization channel 400 through the leakage port 30.
[0063] Preferably, when the bottom wall of the cover 11 is located below the exhaust port 2000 and the cover 11 is provided with a leakage port 30 on the bottom wall of the first flow equalization cavity 10, the height of the liquid foreign matter in the flow equalization channel 400 will not exceed the exhaust port 2000, that is, before the liquid oil exceeds the height of the exhaust port 2000, it will be discharged to the outside of the flow equalization channel 400 through the leakage port 30.
[0064] In this invention, the first flow equalization shield 1 is detachably disposed on the valve body 2001, and the first flow equalization shield 1 is located at the bottom of the flow equalization structure 100.
[0065] When the bottom wall of the cover 11 is tilted toward the exhaust port 2000 and the first flow equalization cover 1 is located at the bottom of the flow equalization structure 100, the liquid foreign matter in the flow equalization channel 400 flows toward the first flow equalization cavity 10 of the cover 11 under its own gravity. Since the leakage port 30 is located between the guide plate 12 and the bottom wall of the cover 11, and at least part of the guide plate 12 is located below the bottom wall of the cover 11, the liquid foreign matter located in the first flow equalization cavity 10 of the cover 11 flows to the outside of the flow equalization structure 100 through the leakage port 30 under its own gravity.
[0066] In this invention, the exhaust valve 200 includes a valve body 2001, two valve plates 2002, and a flow equalization structure. The valve body 2001 is provided with two exhaust ports 2000. Each valve plate 2002 is movably disposed on the valve body 2001 and is used to open or close one of the exhaust ports 2000. This structure is used to reduce the area size of the exhaust ports 2000.
[0067] join Figure 6 The first flow equalization shroud 1 also includes a reinforcing rod 14, which is fixedly connected to the shroud body 11. After the reinforcing rod 14 is fixedly connected to the shroud body 11, a second opening 102 is formed. This structure is used to increase the deformation resistance of the shroud body 11.
[0068] join Figure 6 The first flow equalizer 1 is provided with a guide channel 13, and the second flow equalizer 2 is provided with a guide block 21. The guide block 21 is inserted into the guide channel 13. When the guide block 21 slides along the guide channel 13, the second flow equalizer 2 can move horizontally relative to the first flow equalizer 1.
[0069] In this invention, the flow equalization structure 100 further includes a slider 3. A positioning hole 211 is provided on the guide block 21, and the slider 3 is detachably disposed in the positioning hole 211. Preferably, the slider 3 is threadedly connected to the positioning hole 211. When the slider 3 is threadedly connected to the positioning hole 211, the slider 3 contacts the outer wall surface of the first flow equalization shroud 1, and / or the outer wall of the second flow equalization shroud 2 contacts the inner wall surface of the first flow equalization shroud 1. This structure is used to increase the stability of the second flow equalization shroud 2 during horizontal movement relative to the first flow equalization shroud 1.
[0070] join Figure 4 The exhaust valve 200 also includes a clamping structure 4. When the exhaust valve 200 is placed in the flue 300, the flue 300 is clamped between the clamping structure 4 and the valve body 2001.
[0071] Application number 2023103170910 discloses an invention patent entitled "Flow Equalizing Valve," which includes a mounting panel and a drag reducer. The drag reducer has a first guide groove arranged axially along the pipe body and a first locking groove arranged circumferentially along the pipe body. The first guide groove has a first opening, and the first locking groove communicates with the first guide groove. The mounting panel has a first stop member, which enters the first guide groove through the first opening and then enters the first locking groove. When the first stop member is located in the first locking groove, the drag reducer is fixedly connected to the mounting panel. The flow equalization valve is fixedly connected to the exhaust pipe of the range hood via a drag reducer. However, the exhaust pipe is made of flexible tubing, and it vibrates during operation. Users have observed that after prolonged vibration, the exhaust pipe drives the drag reducer to move circumferentially, causing the first stop to disengage from the first guide groove and then from the first locking groove. If the vibration continues, the exhaust pipe drives the drag reducer to move axially, causing the first stop to disengage from the first guide groove and ultimately separating the flow equalization valve from the drag reducer. In existing technology, some exhaust valves also employ a flow equalization valve structure. These valves include a valve body and a guide pipe, with the valve body similar to the mounting panel and the guide pipe similar to the drag reducer. The valve body is fixedly connected to the range hood's exhaust pipe via the guide pipe. Therefore, these exhaust valves also suffer from the problem of the guide pipe separating from the valve body after the exhaust pipe vibrates.
[0072] See Figure 7 , Figure 8 and Figure 14 The exhaust valve 200 includes a valve body 2001 and at least one valve plate 2002. The valve body 2001 is provided with at least one exhaust port 2000. Each valve plate 2002 is movably disposed on the valve body 2001 for opening or closing one of the exhaust ports 2000. The valve body 2001 includes a decorative panel 20011 and a plug pipe 20012. The decorative panel 20011 is provided with a flexible sealing ring for abutting against the flue. The plug pipe 20012 is disposed in front of the decorative panel 20011. All exhaust ports 2000 are disposed on the plug pipe.
[0073] join Figure 7 , Figure 9 and Figure 12 The exhaust valve 200 also includes:
[0074] The guide pipe 5 is used to connect the exhaust pipe on the range hood. The guide pipe 5 is sleeved on the plug pipe 20012. At least two mating parts are provided on the guide pipe 5.
[0075] Anti-rotation structure 6, which is provided with at least two locking parts;
[0076] The guide tube 5 and the insertion tube 20012 are fixedly connected by the anti-rotation structure 6. When the guide tube 5 and the insertion tube 20012 are fixedly connected by the anti-rotation structure 6, each locking part matches one of the mating parts. The insertion tube 20012 prevents the guide tube 5 from moving axially and circumferentially by the anti-rotation structure 6.
[0077] Combination Figure 10 and Figure 11 It can be seen that at least two mating parts include a first mating part 5111 and a second mating part 5121; from Figure 6 It can be seen that at least two locking parts include a first locking part 621 and a second locking part 622; combined with Figure 15 and Figure 16 It can be seen that the first locking part 621 is inserted into the first mating part 5111, and the second locking part 622 is inserted into the second mating part 5121.
[0078] In this invention, the guide pipe 5 and the insertion pipe 20012 are fixedly connected by an anti-rotation structure 6. This structure enables the guide pipe 5 to be fixed to the valve body 2001 of the exhaust valve 200 via the insertion pipe 20012. Since the guide pipe 5 is provided with a first mating part 5111 and a second mating part 5121, and the anti-rotation structure 6 is provided with a first locking part 621 and a second locking part 622, when the guide pipe 5 and the insertion pipe 20012 are fixedly connected by the anti-rotation structure 6, the first locking part 621 and the second locking part 622 restrict the movement of the anti-rotation structure 6 in two directions, so that the insertion pipe 20012 prevents the guide pipe 5 from moving axially and circumferentially via the anti-rotation structure 6.
[0079] When the insertion pipe 20012 prevents the axial and circumferential movement of the guide pipe 5 by the anti-rotation structure 6, the guide pipe 5 will not separate from the valve body 2001 even if the exhaust pipe on the range hood shakes.
[0080] join Figure 7 , Figure 13 and Figure 14 The anti-rotation structure 6 includes a fastener 61. The guide tube 5 is disposed on the insertion tube 20012 via the fastener 61 to prevent the guide tube 5 from moving axially and / or circumferentially relative to the insertion tube 20012. Specifically, the fastener 61 includes a screw, which is fixedly connected to a threaded hole 20010 on the insertion tube 20012. When the screw is fixedly connected to the threaded hole 20010 on the insertion tube 20012, the screw prevents the guide tube 5 from moving axially relative to the insertion tube 20012. In other embodiments of the present invention, the fastener and the anti-rotation plate are integrally formed. When the fastener and the anti-rotation plate are integrally formed, the guide tube is disposed on the insertion tube 20012 via the fastener to prevent the guide tube from moving axially and circumferentially relative to the insertion tube.
[0081] When the guide tube 5 is mounted on the insertion tube 20012 by the fastener 61 to prevent the guide tube 5 from moving axially relative to the insertion tube 20012, the guide tube 5 can be removed from the insertion tube 20012 without the aid of external tools.
[0082] In this invention, the guide tube 5 is mounted on the insertion tube 20012 by a fastener 61 to prevent the guide tube 5 from moving axially relative to the insertion tube 20012; when the guide tube 5 is mounted on the insertion tube 20012 by the fastener 61 to prevent the guide tube 5 from moving axially relative to the insertion tube 20012, the fastener 61 does not need to be removed from the insertion tube 20012, and the guide tube 5 can be removed from the insertion tube 20012.
[0083] Since the fastener 61 is a screw, which is threadedly connected to the connector 20012, when the guide tube 5 is secured to the connector 20012 by the fastener 61 to prevent axial movement of the guide tube 5 relative to the connector 20012, the guide tube 5 can be removed from the connector 20012 without the aid of external tools. This structure allows maintenance workers (or users) to remove the guide tube 5 by hand.
[0084] join Figure 7 , Figure 8 and Figure 13 Fastener 61 is detachably provided on connector 20012 to prevent guide tube 5 from moving axially relative to connector 20012.
[0085] In this invention, when the fastener 61 is provided on the insertion tube 20012, the fastener 61 abuts against the guide tube 5 to prevent the guide tube 5 from moving axially relative to the insertion tube 20012. Therefore, when the fastener 61 is detachably provided on the insertion tube 20012, the user can achieve the fastener 61 abutting against the guide tube 5 by replacing the fastener 61 with a different specification.
[0086] join Figure 12 and Figure 13 The anti-rotation structure 6 includes an anti-rotation plate 62, and at least two locking parts are provided on the anti-rotation plate 62, namely, a first locking part 621 and a second locking part 622 are provided on the anti-rotation plate 62. When the guide tube 5 is provided on the insertion tube 20012 by the fastener 61, and each of the locking parts matches one of the mating parts, the anti-rotation structure 6 prevents the guide tube 5 from moving axially and circumferentially relative to the insertion tube 20012.
[0087] When the guide tube 5 is provided on the insertion tube 20012 by the fastener 61 and each locking part matches one of the mating parts, the fastener 61 prevents the guide tube 5 from moving axially relative to the insertion tube 20012, and the anti-rotation plate 62 prevents the guide tube 5 from moving circumferentially relative to the insertion tube 20012.
[0088] join Figure 11 , Figure 15 and Figure 16 The guide tube 5 is provided with an anti-rotation channel 51 for limiting the movement trajectory of the fastener 61. The anti-rotation channel 51 is provided with an opening 513 and at least two mating grooves. The at least two mating grooves include a first mating part 5111 and a second mating part 5121. Each of the locking parts is inserted into the mating groove. When the first locking part 621 is separated from the first mating part 5111 and the second locking part 622 is separated from the second mating part 5121, the guide tube 5 rotates circumferentially relative to the insertion tube 20012 so that the fastener 61 corresponds to the opening 513.
[0089] Among them, the width dimension of fastener 61 is less than or equal to the width dimension of opening 513.
[0090] When the anti-rotation channel 51 limits the movement trajectory of the fastener 61, and the width of the fastener 61 is less than or equal to the width of the opening 513, the fastener 61 can move along the anti-rotation channel 51 and exit the anti-rotation channel 51 from the opening 513. This structure enables the guide tube 5 to be separated from the insertion tube 20012 without the aid of any tools.
[0091] from Figure 11 As can be seen, the anti-rotation channel 51 includes a guide section 512 and an anti-rotation section 511 connected to the guide section 512. An opening 513 is provided in the guide section 512. There is an angle between the guide section 512 and the anti-rotation section 511. The fastener 61 can slide along the guide section 512 and the anti-rotation section 511.
[0092] When the guide tube 5 is mounted on the insertion tube 20012 via fastener 61, and each locking part mates with one of the mating parts, the fastener 61 is located in the guide section 512, and the anti-rotation plate 62 is located in the anti-rotation channel 51 between the fastener 61 and the opening 513. This structure prevents the anti-rotation plate 62, located outside the opening 513, from colliding with other objects. In other embodiments of the invention, when the guide tube is mounted on the insertion tube via fastener, and each locking part mates with one of the mating parts, the fastener is located in the guide section, part of the anti-rotation plate is located in the anti-rotation channel, and the remaining part of the anti-rotation plate is located outside the anti-rotation channel.
[0093] When the fastener 61 is located in the anti-rotation section 511 and the anti-rotation plate 62 is located in the anti-rotation channel 51 between the fastener 61 and the opening 513, the fastener 61 can only slide along the anti-rotation section 511 and the guide section 512 after the anti-rotation plate 62 is removed.
[0094] In this invention, one mating groove is located in the anti-rotation section 511, and / or the other mating groove is located in the guide section 512. Specifically: from Figure 5 It can be seen that the first mating part 5111 is located in the anti-rotation section 511, and the second mating part 5121 is located in the guide section 512.
[0095] When the first mating part 5111 is located in the anti-rotation section 511 and the second mating part 5121 is located in the guide section 512, the first mating part 5111 and the second mating part 5121 are misaligned. The misaligned first mating part 5111 and the second mating part 5121 fix the anti-rotation plate 62 from two different positions to increase the connection strength between the anti-rotation plate 62 and the guide pipe 5.
[0096] join Figure 11 and Figure 16 The guide pipe 5 is provided with a reinforcing rib 52 on the side wall near the anti-rotation channel 51. The reinforcing rib 52 can abut against the fastener 61 and / or the anti-rotation plate 62.
[0097] The reinforcing rib 52 is used to increase the contact area between the guide tube 5 and the fastener 61, so as to increase the deformation resistance of the guide tube 5 and the connection strength between the guide tube 5 and the fastener 61; the reinforcing rib 52 is used to increase the contact area between the guide tube 5 and the anti-rotation plate 62, so as to increase the deformation resistance of the guide tube 5 and the connection strength between the guide tube 5 and the anti-rotation plate 62.
[0098] join Figure 16 The anti-rotation plate 62 is provided with a relief groove 624. When the guide pipe 5 is installed on the insertion pipe 20012 by the fastener 61 and each locking part matches one of the mating parts, the relief groove 624 corresponds to the insertion pipe 20012.
[0099] When the guide tube 5 is installed on the insertion tube 20012 via the fastener 61, and each locking part matches one of the mating parts, the user's finger (or a key, iron rod, screwdriver, or other tool) can be inserted into the relief groove 624. Since the relief groove 624 corresponds to the insertion tube 20012, the user's finger can be inserted into the relief groove 624 and exert an upward force, which can separate the anti-rotation plate 62 from the insertion tube 20012.
[0100] In this invention, the distance between the bottom wall of the clearance groove 624 and the insertion tube 20012 is ≥2mm, and / or the distance between the bottom wall of the clearance groove 624 and the insertion tube 20012 is ≤10mm.
[0101] When the gap between the bottom wall of the clearance groove 624 and the insertion tube 20012 is ≥2mm (≥10mm), it is difficult for the user's fingers to be inserted into the clearance groove 624. This structure prevents the user's fingers from accidentally being inserted into the clearance groove 624 and allows the anti-rotation plate 62 to be removed from the insertion tube 20012.
[0102] In this invention, the anti-rotation plate 62 is provided with an arc-shaped avoidance surface 623, which is used to avoid the fastener 61.
[0103] join Figure 8 , Figure 9 and Figure 10The guide pipe 5 is provided with a guide channel 56 and two diversion channels 54. Both diversion channels 54 are connected to the guide channel 56. The exhaust valve 200 includes two valve plates 2002. The valve body 2001 is provided with two exhaust ports 2000. Each diversion channel 54 is connected to one of the exhaust ports 2000. The guide pipe 5 is provided with a diversion plate 55. The two diversion channels 54 are separated by the diversion plate 55.
[0104] In this invention, the valve plate 2002 is made of metal; combined with Figure 8 and Figure 9 It can be concluded that the guide pipe 5 is provided with two protrusions 53, each protrusion 53 is located in a section of the diversion channel 54, and each protrusion 53 extends toward the diversion plate 55. Each protrusion 53 is provided with an installation groove 531, which is used to install the magnet for adsorbing the valve plate 2002. Two protrusions 532 are provided near the opening of the installation groove 531.
[0105] In this invention, the exhaust valve 200 also includes a flow equalization structure 100, which is fixedly connected to the valve body 2001 via a connector 1. The decorative panel 20011 is provided with a through hole 2 that cooperates with the connector 1.
[0106] In this invention, the decorative panel 20011 is provided with a receiving groove 3 for accommodating a flexible sealing ring, and the decorative panel 20011 is also provided with an abutment plate 4 located outside the receiving groove 3. The abutment plate 4 is used to increase the contact area between the decorative panel 20011 and the flue.
[0107] 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. A flow equalization structure, including at least two flow equalization hoods, each flow equalization hood having a flow equalization cavity, adjacent flow equalization hoods being movably connected, each flow equalization hood being able to move horizontally relative to its adjacent flow equalization hood, and after all adjacent flow equalization hoods are movably connected, the flow equalization cavities on all flow equalization hoods are spliced together to form a flow equalization channel. The flow equalization hood located at the first end is used to connect the valve body of the exhaust valve. The flow equalization hood at the first end includes a hood body, a flow equalization cavity disposed in the hood body, a first opening and a second opening corresponding to the first opening on the side wall of the flow equalization cavity, and a flow equalization port on the top wall of the flow equalization cavity; characterized in that, The flow equalization hood at the front end is equipped with a discharge port for discharging foreign objects located in the flow equalization cavity.
2. The flow equalization structure as described in claim 1, characterized in that, The discharge port is not perpendicular to the first opening.
3. The flow equalization structure as described in claim 2, characterized in that, At least a portion of the discharge port corresponds to the first opening; or, the discharge port is offset from the first opening.
4. The flow equalization structure as described in any one of claims 1 to 3, characterized in that, The flow equalization hood at the head end also includes an inclined guide plate, which is located on the hood body, and the material outlet is located between the guide plate and the hood body.
5. The flow equalization structure as described in claim 4, characterized in that, The material leakage port does not correspond to the flow equalization port; and / or, at least part of the flow guide plate is located below the bottom wall of the cover.
6. The flow equalization structure as described in claim 1, characterized in that, The cover is located on the bottom wall of the flow equalization cavity and has a material leakage port.
7. An exhaust valve, comprising a valve body, at least one valve plate, and a flow equalization structure, wherein the valve body has at least one exhaust port, and each valve plate is movably disposed in the valve body and used to open or close one of the exhaust ports, characterized in that, The flow equalization structure is the flow equalization structure according to any one of claims 1 to 6, and the flow equalization shroud at the first end is disposed on the valve body.
8. The exhaust valve according to claim 7, characterized in that, The bottom wall of the cover is located above the exhaust port, and the bottom wall of the cover is inclined towards the exhaust port.
9. The exhaust valve according to claim 7, characterized in that, The first opening is located between the vent and the discharge port, at least a portion of the discharge port corresponds to the vent, and the area of the discharge port is smaller than the area of the vent.
10. The exhaust valve according to claim 7, characterized in that, The flow equalization hood at the beginning is detachably installed on the valve body, and the flow equalization hood at the beginning is located at the bottom of the flow equalization structure.