Range hood structure and range hood

Abstract

The present invention discloses a range hood structure and a range hood, the range hood structure comprising a range hood assembly and a switch assembly, the range hood assembly being provided with an air outlet; the switch assembly being used to open or close the air outlet; the switch assembly being configured such that when the air temperature inside the range hood assembly is lower than a preset value, the switch assembly is deformed to open the air outlet, and when the air temperature inside the range hood assembly is higher than the preset value, the deformed part of the switch assembly recovers the deformation to close the air outlet. The range hood structure and the range hood can improve fire prevention reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood structure and a range hood. Background Art

[0002] With the improvement of modern living standards, range hoods have gradually entered the kitchens of thousands of households. Range hoods are generally installed near stoves to absorb and exhaust the fumes and hot air generated by the stoves. When the range hood is working, the air inlet of the range hood is close to the flame of the stove. Although the range hood body is generally a metal shell with a high ignition point, the range hood will accumulate grease and other combustibles in the flue of the range hood while absorbing and exhausting fumes. When the flame of the stove is sucked into the flue by the range hood, it is easy to cause a fire, and the accumulated oil in the flue of the range hood will cause fire accidents when it encounters high temperature.

[0003] In order to improve the fire prevention performance of the range hood, a traditional range hood is equipped with a densely meshed oil net at its air inlet for fire prevention. However, the setting of the oil net will affect the suction and exhaust efficiency of the range hood, and the reliability of fire prevention is not high, posing a fire hazard. Summary of the invention

[0004] Based on this, in view of the problem that traditional range hoods have low fire prevention reliability and potential safety hazards, a range hood structure and a range hood are proposed, which can improve the fire prevention reliability.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to a range hood structure, comprising:

[0007] A range hood assembly, wherein the range hood assembly is provided with an air outlet; and

[0008] A switch assembly, the switch assembly is used to open or close the air outlet; the switch assembly is configured so that when the air temperature inside the range hood assembly is lower than a preset value, the switch assembly deforms to open the air outlet, and when the air temperature inside the range hood assembly is higher than the preset value, the deformed part of the switch assembly recovers the deformation to close the air outlet.

[0009] The technical solution is further described below:

[0010] In one embodiment, the air outlet includes an air inlet and an air outlet connected to the air inlet; the switch assembly includes a first switch assembly and a second switch assembly;

[0011] The first switch assembly is used to open or close the air inlet, and the first switch assembly is configured such that when the air temperature inside the range hood assembly is lower than a preset value, the first switch assembly deforms to open the air inlet, and when the air temperature inside the range hood assembly is higher than the preset value, the deformed portion of the first switch assembly recovers the deformation to close the air inlet;

[0012] The second switch assembly is used to open or close the air outlet. The second switch assembly is configured such that when the air temperature inside the range hood assembly is lower than a preset value, the second switch assembly deforms to open the air outlet, and when the air temperature inside the range hood assembly is greater than the preset value, the deformed part of the second switch assembly recovers its deformation to close the air outlet.

[0013] In one embodiment, the range hood assembly includes a fan and a range hood housing with open ends, the fan is disposed in the range hood housing, the outlet of the fan is the air outlet, and the opening on one side of the range hood housing away from the outlet of the fan is the air inlet.

[0014] In one embodiment, the first switch assembly includes a shielding member and a first switch member, the shielding member is arranged in the range hood housing and shields the air inlet, the shielding member is provided with an exhaust port for connecting the air inlet and the inside of the range hood housing, the first switch member is connected to the shielding member, the first switch member is configured such that when the air temperature in the range hood housing is lower than a preset value, the first switch member deforms to open the exhaust port, and when the air temperature in the range hood housing is greater than the preset value, the first switch member resumes deformation to close the exhaust port.

[0015] In one embodiment, the first switch member includes a first switch body and a second switch body, the shielding member is provided with a first exhaust area and a second exhaust area, the first exhaust area and the second exhaust area are each provided with at least one exhaust port, the first switch body is connected to the shielding member and is used to open or close the exhaust port located in the first exhaust area, and the second switch body is connected to the shielding member and is used to open or close the exhaust port located in the second exhaust area.

[0016] In one embodiment, the first switch body is provided with a first fixing portion and a first deformation portion connected to the first fixing portion, and the second switch body is provided with a second fixing portion and a second deformation portion connected to the second fixing portion;

[0017] The first fixing portion is fixedly disposed in the first exhaust area, and the first deformable portion is used to open or close the exhaust port located in the first exhaust area;

[0018] The second fixing portion is fixedly disposed in the second exhaust area, and the second deformation portion is used to open or close the exhaust port located in the second exhaust area.

[0019] In one embodiment, the range hood shell includes a first shell and a second shell, both of which are open at both ends and hollow inside, one of the open ends of the first shell is connected and communicated with one of the open ends of the second shell, the other open end of the second shell is provided with the air inlet, the fan is arranged in the first shell, and the shielding member is arranged in the second shell.

[0020] In one embodiment, the first switch element is a first memory metal plate.

[0021] In one embodiment, the second switch assembly includes a second switch component, which is covered on the air outlet. The second switch component is configured to deform to open the air outlet when the air temperature inside the range hood housing is lower than a preset value, and to restore the deformation to close the air outlet when the air temperature inside the range hood housing is greater than the preset value.

[0022] In one embodiment, the second switch member includes a third switch body and a fourth switch body, the third switch body includes a third fixing portion and a third deformation portion connected to the third fixing portion, and the fourth switch body includes a fourth fixing portion and a fourth deformation portion connected to the fourth fixing portion;

[0023] The third fixing portion and the fourth fixing portion are both fixedly arranged on a side of the fan where the air outlet is provided, and the third fixing portion and the fourth fixing portion are arranged opposite to each other. The third deformation portion is used to open or close part of the air outlet, and the fourth deformation portion is used to open or close part of the air outlet. When the third deformation portion and the fourth deformation portion close the air outlet, the third deformation portion and the fourth deformation portion are combined to completely close the open part of the air outlet.

[0024] In one embodiment, it further comprises a one-way valve and an intermediate shell, wherein the intermediate shell is provided with an installation cavity, one end of the intermediate shell is provided with an installation port connected with the installation cavity, and the other opposite end of the intermediate shell is a docking end, wherein the docking end is docked and connected with an open port on one side of the range hood housing close to the air outlet, and the one-way valve is installed at the installation port;

[0025] When the third deformation part and the fourth deformation part open the air outlet correspondingly, the third deformation part and the fourth deformation part both extend into the installation cavity and contact and cooperate with the one-way valve, and a smoke exhaust channel connected to the one-way valve is formed between the third deformation part and the fourth deformation part.

[0026] In one embodiment, the second switch element is a second memory metal plate.

[0027] In one of the embodiments, it also includes a fire extinguishing mechanism, which is arranged inside the range hood assembly. The fire extinguishing mechanism includes a starting assembly, a fire extinguisher and a third switch component. The third switch component can move relative to the foam outlet of the fire extinguisher to open or close the foam outlet. One end of the starting assembly is in transmission cooperation with the deformed part of the switch assembly, and the other end of the starting assembly is connected to the third switch component. When the deformed part of the switch assembly moves in the direction of closing the air outlet, the deformed part of the switch assembly drives the starting assembly to move, and the third switch component moves in a direction away from the foam outlet to open the foam outlet.

[0028] In one embodiment, the fire extinguishing mechanism includes a mounting seat, the fire extinguisher is arranged on the mounting seat, the fire extinguisher includes a mounting shell, the mounting shell is provided with a foam cavity and an injection channel connected to the foam outlet of the foam cavity;

[0029] The starting assembly includes a trigger member, a first connecting rod and a second connecting rod, the mounting seat and the trigger member are arranged along the height direction of the range hood assembly, the mounting seat is provided with a first mounting hole, and the circumferential side wall of the injection channel is provided with a second mounting hole, one end of the trigger member is transmission-matched with the deformation portion of the switch assembly, the other end of the trigger member passes through the first mounting hole and is rotatably connected to the first connecting rod, the second connecting rod is rotatably inserted into the second mounting hole and extends into the injection channel, the third switch member is fixed to the portion of the second connecting rod located in the injection channel, and the first connecting rod and the portion of the second connecting rod located outside the second mounting hole are rotatably connected;

[0030] When the deformed portion of the switch assembly moves in the direction of closing the air outlet, the deformed portion of the switch assembly drives the trigger member to move, the trigger member drives the first connecting rod to drive the second connecting rod to rotate, and the second connecting rod drives the third switch member to rotate to open the foam outlet.

[0031] In one embodiment, the trigger member includes a mounting head, a trigger rod and a third connecting rod, the mounting head is provided with an open groove, one end of the trigger rod is in transmission cooperation with the deformation portion of the switch assembly, the other end of the trigger rod is connected to the mounting head, the groove wall of the open groove is provided with a guide hole extending along the depth direction of the open groove, the third connecting rod is movably arranged in the guide hole, one end of the first connecting rod is rotatably connected to the third connecting rod, and the first connecting rod is arranged at an angle to the second connecting rod and the third connecting rod;

[0032] Among them, when the deformed part of the switch assembly moves in the direction of closing the air outlet, the deformed part of the switch assembly drives the trigger rod to drive the mounting head to move, the first connecting rod drives the third connecting rod to move in the direction of entering the opening groove and the first connecting rod is accommodated in the opening groove, the first connecting rod drives the second connecting rod to rotate, and the second connecting rod drives the third switch component to rotate to open the foam outlet.

[0033] In one embodiment, the other end of the trigger member is provided with a bent trigger portion, and the trigger portion is arranged on the moving path of the deformation portion of the switch assembly. When the deformation portion of the switch assembly moves in the direction of closing the air outlet, the deformation portion of the switch assembly contacts and cooperates with the trigger portion and pushes the trigger to drive the third switch member to rotate in a direction away from the foam outlet to open the foam outlet.

[0034] In one embodiment, there are two first connecting rods, one end of each of the two first connecting rods is rotatably connected to the third connecting rod, and the other end of each of the two first connecting rods is rotatably connected to a portion of the second connecting rod that passes through the second mounting hole.

[0035] In one of the embodiments, a side wall of the opening groove is provided with a guide portion for guiding the first connecting rod to enter the opening groove.

[0036] In one embodiment, the guide portion is an arc-shaped guide surface disposed close to the opening of the opening slot.

[0037] In one embodiment, the mounting housing is further provided with a solute storage member disposed in the foam cavity, the solute storage member is provided with a solute cavity and a solute outlet for connecting the solute cavity and the foam cavity, and the foam cavity can be used to contain a solvent that reacts with the solute to produce foam;

[0038] The fire extinguisher includes a fourth switch component for opening or closing the solute outlet, one end of the fourth switch component extends along the foam outlet and is connected to the third switch component, the fourth switch component is provided with a switch part, the third switch component rotates in the direction of opening the foam outlet to drive the fourth switch component to move, so that the switch part opens the solute outlet.

[0039] In one embodiment, the solute storage element includes a first storage element for storing a first solute and a second storage element for storing a second solute, the solute outlet includes a first outlet and a second outlet, the first storage element is provided with the first outlet, and the second storage element is provided with the second outlet;

[0040] An installation channel is formed between the first storage member and the second storage member, and a foam channel for connecting the foam cavity and the foam outlet is formed between the first storage member or the second storage member and the inner wall of the foam cavity; the fourth switch member is inserted into the installation channel, and the switch part is used to simultaneously block or open the first outlet and the second outlet, and when the third switch member rotates in the direction of opening the foam outlet, the third switch member drives the fourth switch member to move, so that the switch part simultaneously opens the first outlet and the second outlet.

[0041] In one embodiment, the switch portion is an elastomer, and when the third switch member rotates in a direction to open the foam outlet, the fourth switch member moves in a direction away from the installation channel, and at least a portion of the switch portion is deformed and extends into the installation channel to simultaneously open the first outlet and the second outlet.

[0042] On the other hand, the present application also relates to a range hood, comprising the range hood structure in any of the aforementioned embodiments.

[0043] When the above-mentioned range hood structure and range hood are in use, when the air temperature inside the range hood assembly is lower than a preset value, it means that there is no fire inside the range hood assembly. At this time, the switch assembly is deformed to open the air outlet, and smoke can enter or be discharged along the air outlet; when the air temperature inside the range hood assembly is greater than the preset value, it means that there is a fire inside the range hood assembly. At this time, the deformed part of the switch assembly recovers the deformation to close the air outlet, thereby blocking the air entering the range hood assembly, thereby automatically extinguishing the fire, and the fire extinguishing reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0046] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0047] Figure 1 A schematic diagram of a range hood structure in a fire state according to an embodiment;

[0048] Figure 2A schematic diagram of a range hood structure in an embodiment of the invention in a non-fired state;

[0049] Figure 3 A schematic diagram of the three-dimensional structure of a range hood structure in a fire state according to an embodiment

[0050] Figure 4 It is a three-dimensional structural schematic diagram of a range hood structure in an embodiment in a non-ignited state;

[0051] Figure 5 A bottom view of a range hood structure according to an embodiment;

[0052] Figure 6 A schematic diagram of a fire extinguishing structure according to an embodiment;

[0053] Figure 7 This is a structural schematic diagram of a fire extinguisher in a closed state according to an embodiment;

[0054] Figure 8 A schematic diagram of the structure of a fire extinguisher in an open state according to an embodiment

[0055] Fig. 9 It is a schematic diagram of the interior of the mounting head of a fire extinguisher in a closed state according to an embodiment;

[0056] Fig.10 It is a schematic diagram of the interior of the mounting head of a fire extinguisher in an open state according to an embodiment;

[0057] Fig.11 Schematic diagram of the structure of a mounting base according to an embodiment.

[0058] Description of reference numerals:

[0059] 10. Hood structure; 100. Hood assembly; 110. Fan; 112. Air outlet; 120. Hood housing; 122. First housing; 124. Second housing; 1242. Air inlet; 210. First switch assembly; 212. Shielding member; 2122. Air outlet; 214. First switch member; 2142. First switch body; 21422. First fixing portion; 21424. First deformation portion; 2144. Second switch body; 21442. Second fixing portion; 21444. Second deformation portion; 220. Second switch assembly; 222. Second switch member; 2222. Third switch body; 22222. Third fixing portion; 22224. Third deformation portion; 2224. Fourth switch body; 22242. Fourth fixing portion; 22244. Fourth deformation portion; 2 30. intermediate shell; 232. mounting cavity; 240. one-way valve; 300. fire extinguishing mechanism; 310. mounting seat; 320. fire extinguisher; 322. mounting shell; 3222. foam cavity; 3224. foam outlet; 3226. mounting channel; 3228. foam channel; 330. starting assembly; 332. trigger member; 3322. trigger rod; 33222. trigger part; 3324. mounting head; 33242. opening groove; 33244. guide hole; 33246. wire part; 3326. third connecting rod; 334. first connecting rod; 336. second connecting rod; 340. third switch member; 350. first storage member; 352. first outlet; 360. second storage member; 362. second outlet; 370. fourth switch member; 372. switch part. DETAILED DESCRIPTION

[0060] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In order to improve the fire prevention performance of the range hood, a traditional range hood is equipped with a densely meshed oil net at its air inlet for fire prevention. However, the setting of the oil net will affect the efficiency of the range hood's suction and exhaust, and the fire prevention reliability is not high, which poses a fire hazard. Based on this, the present application proposes a range hood structure 10 and a range hood (not shown), which can improve the fire prevention reliability.

[0064] Please refer to Figure 1 and Figure 2 In one embodiment, a range hood structure 10 includes a range hood assembly 100 and a switch assembly (not shown). The range hood assembly 100 is provided with an air outlet (not shown), and the switch assembly is used to open or close the air outlet. The switch assembly is configured to deform to open the air outlet when the air temperature inside the range hood assembly 100 is lower than a preset value, and to restore the deformation of the deformed portion of the switch assembly to close the air outlet when the air temperature inside the range hood assembly 100 is higher than the preset value.

[0065] It is understandable that the preset temperature can be set as needed. For example, the preset value can be the ignition temperature of the grease. The air outlet can be the air inlet 1242 or the air outlet 112. There are multiple air outlets, for example, one of which can have an air inlet function and the other can have an air outlet function.

[0066] When the range hood structure 10 is in use, when the air temperature inside the range hood assembly 100 is lower than a preset value, it means that there is no fire inside the range hood assembly 100. At this time, the switch assembly is deformed and the air outlet is opened, and smoke can enter or be discharged along the air outlet. When the air temperature inside the range hood assembly 100 is greater than the preset value, it means that there is a fire inside the range hood assembly 100. At this time, the deformed part of the switch assembly recovers its deformation to close the air outlet, cuts off the air entering the range hood assembly 100, and then automatically extinguishes the fire, with high fire extinguishing reliability.

[0067] For example, see Figure 1 In one embodiment, the air outlet includes an air inlet 1242 and an air outlet 112 connected to the air inlet 1242. The switch assembly includes a first switch assembly 210 and a second switch assembly 220.

[0068] The first switch assembly 210 is used to open or close the air inlet 1242. The first switch assembly 210 is configured such that when the air temperature inside the range hood assembly 100 is lower than a preset value, the first switch assembly 210 is deformed to open the air inlet 1242, and when the air temperature inside the range hood assembly 100 is greater than the preset value, the deformed portion of the first switch assembly 210 is restored to deform to close the air inlet 1242. The second switch assembly 220 is used to open or close the air outlet 112. The second switch assembly 220 is configured such that when the air temperature inside the range hood assembly 100 is lower than a preset value, the second switch assembly 220 is deformed to open the air outlet 112, and when the air temperature inside the range hood assembly 100 is greater than the preset value, the deformed portion of the second switch assembly 220 is restored to deform to close the air outlet 112. When the temperature inside the range hood assembly 100 is higher than the preset value, it indicates that a fire has occurred inside the range hood assembly 100. At this time, the first switch assembly 210 is restored to deform and close the air inlet 1242, thereby preventing air from entering the range hood assembly 100 along the air inlet 1242. At this time, the second switch assembly 220 is also restored to deform and close the air outlet 112, thereby preventing air from entering the range hood assembly 100 along the air outlet 112. In this way, by closing the air outlet 112 and the air inlet 1242 simultaneously through the first switch assembly 210 and the second switch assembly 220, the air entering the range hood assembly 100 can be blocked, thereby automatically extinguishing the fire, and the reliability of fire extinguishing is high.

[0069] Please refer to Figure 1 and Figure 2 In one embodiment, the range hood assembly 100 includes a fan 110 and a range hood housing 120 with both ends open. The fan 110 is disposed in the range hood housing 120, the outlet of the fan 110 is an air outlet 112, and the opening on one side of the range hood housing 120 away from the outlet of the fan 110 is an air inlet 1242.

[0070] It is understandable that the first switch assembly 210 can be disposed above the air inlet 1242 or below the air inlet 1242, as long as the first switch assembly 210 can close the air inlet 1242 to prevent air from entering the fan 110 along the air inlet 1242. The second switch assembly 220 is disposed above the air outlet 112.

[0071] Please refer to Figure 3 and Figure 4In some embodiments, the first switch assembly 210 includes a shielding member 212 and a first switch member 214. The shielding member 212 is disposed in the range hood housing 120 and closes the air inlet 1242. The shielding member 212 is provided with an air outlet 2122 for connecting the air inlet 1242 and the interior of the range hood housing 120. The first switch member 214 is connected to the shielding member 212. The first switch member 214 is configured to deform to open the air outlet 2122 when the air temperature in the range hood housing 120 is lower than a preset value. At this time, smoke and air can enter the interior of the range hood housing 120 along the air inlet 1242 and the air outlet 2122 and be discharged through the fan 110. When the air temperature in the range hood housing 120 is higher than the preset value, the first switch member 214 recovers its deformation to close the air outlet 2122. At this time, smoke and air cannot enter the interior of the range hood housing 120 along the air inlet 1242 and the air outlet 2122.

[0072] Optionally, the first switch element 214 may be a first memory metal plate. When the first switch element 214 is set as the first memory metal plate, the first switch element 214 may switch between deformation and restoration of deformation according to temperature changes, thus replacing the electronic control component to control the opening and closing of the air inlet 1242, thereby improving the reliability of fire extinguishing.

[0073] Specifically, the shielding member 212 may be a shell with an open end, and an exhaust port 2122 is provided on a side of the shell opposite to the open end. The shell is disposed in the range hood shell 120, and the open end of the shell is used to receive smoke and air entering through the air inlet 1242. In order to facilitate the collection of smoke, the longitudinal cross-section of the internal cavity of the shielding member 212 may be trapezoidal.

[0074] Please refer to Figure 3 and Figure 4 The range hood shell 120 includes a first shell 122 and a second shell 124. Both the first shell 122 and the second shell 124 are open at both ends and hollow inside. One of the open ends of the first shell 122 is connected and communicated with one of the open ends of the second shell 124. The other open end of the second shell 124 is provided with an air inlet 1242. The fan 110 is arranged in the first shell 122, and the shielding member 212 is arranged in the second shell 124.

[0075] Specifically, the shielding member 212 and the second housing 124 may have similar shapes. For example, in order to facilitate the collection of smoke, the longitudinal cross-section of the internal cavity of the second housing 124 may be trapezoidal. The large end of the shielding member 212 corresponds to the large end of the second housing 124, and the small end of the shielding member 212 is provided with an exhaust port 2122 and is arranged corresponding to the small end of the second housing 124.

[0076] Please refer to Figures 3 to 5In some embodiments, the first switch member 214 includes a first switch body 2142 and a second switch body 2144, the shielding member 212 is provided with a first exhaust area and a second exhaust area, the first exhaust area and the second exhaust area are both provided with at least one exhaust port 2122, the first switch body 2142 is connected to the shielding member 212 and is used to open or close the exhaust port 2122 located in the first exhaust area, and the second switch body 2144 is connected to the shielding member 212 and is used to open or close the exhaust port 2122 located in the second exhaust area.

[0077] Optionally, the first switch body 2142 and the second switch body 2144 may be memory metal plates.

[0078] In some embodiments, the first switch body 2142 and the second switch body 2144 can be arranged in a manner similar to a "double-door". Figure 3 and Figure 4 In some embodiments, the first switch body 2142 and the second switch body 2144 may be disposed opposite to each other.

[0079] For details, please refer to Figure 3 and Figure 4 The first switch body 2142 is provided with a first fixed portion 21422 and a first deforming portion 21424 connected to the first fixed portion 21422, and the second switch body 2144 is provided with a second fixed portion 21442 and a second deforming portion 21444 connected to the second fixed portion 21442; the first fixed portion 21422 is fixed in the first exhaust area, and the first deforming portion 21424 is used to open or close the exhaust port 2122 located in the first exhaust area; the second fixed portion 21442 is fixed in the second exhaust area, and the second deforming portion 21444 is used to open or close the exhaust port 2122 located in the second exhaust area.

[0080] The first deformation part 21424 and the second deformation part 21444 can be arranged in a manner similar to a "double door". Figure 4 In some embodiments, the first deformation portion 21424 and the second deformation portion 21444 may be disposed opposite to each other.

[0081] It is understandable that the width of the first fixed portion 21422 and the first deformable portion 21424 can be set as needed, and the width between the first fixed portion 21422 and the first deformable portion 21424 can be equal or unequal, but the width of the first deformable portion 21424 must be set to ensure that all the exhaust ports 2122 located in the first exhaust area can be closed. Similarly, the width of the second fixed portion 21442 and the second deformable portion 21444 can be set as needed, and the width between the second fixed portion 21442 and the second deformable portion 21444 can be equal or unequal, but the width of the second deformable portion 21444 must be set to ensure that all the exhaust ports 2122 located in the second exhaust area can be closed.

[0082] Please refer to Figure 3 and Figure 4 In some embodiments, the second switch assembly 220 includes a second switch component 222, which is covered on the air outlet 112. The second switch component 222 is configured to deform to open the air outlet 112 when the air temperature inside the range hood housing 120 is lower than a preset value, and to restore the deformation to block the air outlet 112 when the air temperature inside the range hood housing 120 is greater than a preset value.

[0083] Optionally, the second switch element 222 is a second memory metal plate. When the second switch element 222 is set as a second memory metal plate, the second switch element 222 can also switch between deformation and recovery deformation according to temperature changes, so that the switch control of the air outlet 112 by the electric control component can be replaced, thereby improving the reliability of fire extinguishing.

[0084] For details, please refer to Figure 3 and Figure 4 In some embodiments, the second switch member 222 includes a third switch body 2222 and a fourth switch body 2224. The third switch body 2222 includes a third fixing portion 22222 and a third deformation portion 22224 connected to the third fixing portion 22222. The fourth switch body 2224 includes a fourth fixing portion 22242 and a fourth deformation portion 22244 connected to the fourth fixing portion 22242. The third fixing portion 22222 and the fourth fixing portion 22242 are both fixedly disposed on the fan 11. 0 is provided with one side of the air outlet 112, the third fixing portion 22222 and the fourth fixing portion 22242 are arranged opposite to each other, the third deformation portion 22224 is used to open or close part of the air outlet 112, and the fourth deformation portion 22244 is used to open or close part of the air outlet 112. When the third deformation portion 22224 and the fourth deformation portion 22244 close the air outlet 112, the third deformation portion 22224 and the fourth deformation portion 22244 are combined to completely close the open part of the air outlet 112.

[0085] For details, please refer to Figure 4 , the third deformation part 22224 and the fourth deformation part 22244 are arranged in a manner similar to a "double door". The widths of the third fixed part 22222 and the third deformation part 22224 can be set as needed, and the widths between the third fixed part 22222 and the third deformation part 22224 can be equal or unequal. Similarly, the widths of the fourth fixed part 22242 and the fourth deformation part 22244 can be set as needed, and the widths between the fourth fixed part 22242 and the fourth deformation part 22244 can be equal or unequal, but the widths of the third deformation part 22224 and the fourth deformation part 22244 must be set to ensure that the open part of the air outlet 112 can be completely closed.

[0086] It should be pointed out that when the third fixing portion 22222 and the fourth fixing portion 22242 are both arranged outside the edge of the air outlet 112, the open portion of the air outlet 112 is the entire air outlet 112; when the third fixing portion 22222 and the fourth fixing portion 22242 cover part of the air outlet 112, the open portion of the air outlet 112 is the area of ​​the air outlet 112 other than the part covered by the third fixing portion 22222 and the fourth fixing portion 22242. When the third fixing portion 22222 and the fourth fixing portion 22242 cover part of the air outlet 112, the third fixing portion 22222 and the fourth fixing portion 22242 need to completely seal the area.

[0087] Please refer to Figure 3 and Figure 4 In some embodiments, the range hood structure 10 has an intermediate housing 230, the intermediate housing 230 is provided with an installation cavity 232, one end of the intermediate housing 230 is provided with an installation port (not shown) connected to the installation cavity 232, and the other opposite end of the intermediate housing 230 is a docking end (not shown), which is docked and connected with the open end of the range hood housing 120 near the air outlet 112. For details, please refer to Figure 4 The butt end is butt-jointed and connected with the open end of the first shell 122 away from the second shell 124 .

[0088] Please refer to Figure 3 and Figure 4The smoke machine structure 10 further includes a one-way valve 240, which is installed at the installation port. When the third deformation part 22224 and the fourth deformation part 22244 open the air outlet 112 correspondingly, the third deformation part 22224 and the fourth deformation part 22244 both extend into the installation cavity 232 and contact and cooperate with the one-way valve 240, and a smoke exhaust channel (not shown) connected to the one-way valve 240 is formed between the third deformation part 22224 and the fourth deformation part 22244. In this way, the installation cavity 232 is provided to accommodate the third deformation part 22224 and the fourth deformation part 22244. In addition, the smoke exhaust channel has the effect of gathering smoke, which facilitates the smoke to be discharged along the one-way valve 240.

[0089] In order to improve the reliability of fire extinguishing of the range hood assembly 100, when a fire occurs inside the range hood assembly 100, a fire extinguishing substance can be sprayed to the fire area through a corresponding fire extinguishing device to quickly extinguish the fire.

[0090] Please refer to Figure 4 and Figure 6 In some embodiments, the range hood structure 10 further includes a fire extinguishing mechanism 300, which is disposed inside the range hood assembly 100. The fire extinguishing mechanism 300 includes a starting assembly 330, a fire extinguisher 320, and a third switch 340. The third switch 340 can move relative to the foam outlet 3224 of the fire extinguisher 320 to open or close the foam outlet 3224. One end of the starting assembly 330 is in transmission cooperation with the deformed portion of the switch assembly, and the other end of the starting assembly 330 is connected to the third switch 340. When the deformed portion of the switch assembly moves in the direction of closing the air outlet, the deformed portion of the switch assembly drives the starting assembly 330 to move, and the third switch 340 moves in a direction away from the foam outlet 3224 to open the foam outlet 3224.

[0091] In this way, when the air temperature inside the range hood assembly 100 is greater than the preset value, it indicates that a fire has occurred inside the range hood assembly 100. At this time, the deformed part of the switch assembly recovers its deformation to close the air outlet, thereby blocking the air from entering the range hood assembly 100. At the same time, the deformed part of the switch assembly drives the starting assembly 330 to move, and the third switch component 340 moves in a direction away from the foam outlet 3224 to open the foam outlet 3224. In this way, the foam in the fire extinguisher 320 is discharged along the foam outlet 3224 to extinguish the fire of the range hood assembly 100, thereby achieving the effect of automatic and rapid fire extinguishing, with high fire extinguishing reliability and efficiency.

[0092] Specifically, the switch component may be the second switch component 220, and the air outlet may be the air inlet 1242. The deformed portion of the second switch component 220 may be the first deformed portion 21424, and the air inlet 1242 is closed by closing the air outlet 2122 through the first deformed portion 21424. In other words, the first deformed portion 21424 drives the start component 330 to operate to drive the third switch component 340 to close the foam outlet 3224.

[0093] The optional structure of the starting component 330 will be described in detail below in conjunction with the embodiments.

[0094] Please refer to Figure 7 and Figure 8 In some embodiments, the fire extinguisher 320 includes a mounting shell 322, which is provided with a foam cavity 3222 and an injection channel (not shown) connected to a foam outlet 3224 of the foam cavity 3222, and a third switch member 340 is rotatably disposed in the injection channel for opening or closing the foam outlet 3224.

[0095] Please refer to Figures 6 to 8 and Fig.11 The fire extinguishing mechanism 300 includes a mounting seat 310, a fire extinguisher 320 is disposed on the mounting seat 310, a starting assembly 330 includes a trigger 332, a first connecting rod 334 and a second connecting rod 336, the mounting seat 310 and the trigger 332 are arranged in the height direction of the range hood assembly 100, and the height direction of the range hood assembly 100 is as shown in FIG. Figure 4 As shown in F, the mounting seat 310 is provided with a first mounting hole 312, and the circumferential side wall of the injection channel is provided with a second mounting hole (not shown), one end of the trigger member 332 is in transmission cooperation with the deformation portion of the switch assembly, and the other end of the trigger member 332 passes through the first mounting hole 312 and is rotatably connected to the first connecting rod 334, the second connecting rod 336 is rotatably penetrated through the second mounting hole and extends into the injection channel, the third switch member 340 is fixed to the portion of the second connecting rod 336 located in the injection channel, and the first connecting rod 334 is rotatably connected to the portion of the second connecting rod 336 located outside the second mounting hole.

[0096] The trigger member 332, the first connecting rod 334 and the second connecting rod 336 form a structure similar to a "connecting rod mechanism", wherein when the deformed portion of the switch assembly moves in the direction of closing the air outlet, the deformed portion of the switch assembly drives the trigger member 332 to move, and the trigger member 332 drives the first connecting rod 334 to drive the second connecting rod 336 to rotate, and the second connecting rod 336 drives the third switch member 340 to rotate to open the foam outlet 3224.

[0097] Please refer to Figure 2 and Figure 6Specifically in one of the embodiments, the other end of the trigger member 332 is provided with a bent trigger portion 33222, and the trigger portion 33222 is arranged on the moving path of the deformation portion of the switch component. When the deformation portion of the switch component moves along the direction of closing the air outlet, the deformation portion of the switch component contacts and cooperates with the trigger portion 33222 and pushes the trigger to drive the third switch member 340 to rotate in a direction away from the foam outlet 3224 to open the foam outlet 3224.

[0098] For details, please refer to Figure 2 The deformation portion of the switch assembly is the first deformation portion 21424 , and the trigger member 332 is driven to move by the cooperation between the first deformation portion 21424 and the trigger portion 33222 .

[0099] Furthermore, since the distance between the mounting shell 322 and the side wall inside the range hood assembly 100 is limited, in order to avoid interference or jamming of the first connecting rod during rotation, sufficient space needs to be provided for the first connecting rod 334 when driving the first connecting rod 334 to rotate.

[0100] For example, see Figure 6 , Fig. 9 and Fig.10 In one embodiment, the trigger member 332 includes a mounting head 3324, a trigger rod 3322 and a third connecting rod 3326. The mounting head 3324 is provided with an open slot 33242. One end of the trigger rod 3322 is in transmission cooperation with the deformation portion of the switch assembly. The other end of the trigger rod 3322 is connected to the mounting head 3324. The slot wall of the open slot 33242 is provided with a guide hole extending along the depth direction of the open slot 33242. The third connecting rod 3326 is movably arranged in the guide hole. One end of the first connecting rod 334 is rotatably connected to the third connecting rod 3326. The first connecting rod 334 is arranged at an angle to the second connecting rod 336 and the third connecting rod 3326.

[0101] When in use, the deformed portion of the switch assembly begins to recover its deformation when the internal air temperature of the range hood assembly 100 is greater than a preset value, and moves in the direction of closing the air outlet. When the deformed portion of the switch assembly drives the trigger member 332 to move along the height direction of the range hood assembly 100, the trigger member 332 drives the mounting head 3324 to move. Since the second connecting rod and the third connecting rod are both arranged at an angle with the first connecting rod, when the mounting head 3324 moves along the height direction of the range hood assembly 100, since the distance between the fire extinguisher 320 and the inner side wall of the range hood assembly 100 is certain, the third connecting rod 3326 will enter the opening groove 33242 under the push of the first connecting rod 334. At this time, the first connecting rod 334 drives the second connecting rod 336 to rotate, and then the second connecting rod 336 drives the third switch member 340 to rotate to open the foam outlet 3224.

[0102] Please refer to Figure 6 and Figure 8 In one embodiment, there are two first connecting rods 334, one end of each of the two first connecting rods 334 is rotatably connected to the third connecting rod 3326, and the other end of each of the two first connecting rods 334 is rotatably connected to the portion of the second connecting rod 336 that passes through the second mounting hole.

[0103] Please refer to the figure, in order to facilitate the first connecting rod 334 to enter the opening groove 33242, in one embodiment, the side wall of the opening groove 33242 is provided with a guide portion for guiding the first connecting rod 334 to enter the opening groove 33242. Specifically, the guide portion is an arc-shaped guide surface arranged near the opening of the opening groove 33242.

[0104] The foam generation method of the fire extinguisher 320 will be described in detail below with reference to the embodiments.

[0105] Please refer to Figure 8 and Fig. 9 In one embodiment, the mounting housing 322 is further provided with a solute storage member (not shown) disposed in the foam cavity 3222, the solute storage member is provided with a solute cavity (not shown) and a solute outlet for connecting the solute cavity and the foam cavity 3222, the foam cavity 3222 can be used to contain a solvent that reacts with the solute to produce foam; the fire extinguisher 320 includes a fourth switch member 370 for opening or closing the solute outlet, one end of the fourth switch member 370 extends along the foam outlet 3224 and is connected to the third switch member 340, the fourth switch member 370 is provided with a switch portion 372, the third switch member 340 rotates in the direction of opening the foam outlet 3224 to drive the fourth switch member 370 to move, so that the switch portion 372 opens the solute outlet. At this time, the solute will enter the foam cavity 3222 along the solute outlet, react with the solvent contained in the foam cavity 3222 to produce foam.

[0106] Foam can be produced by a chemical reaction between a solute and a solvent, or by a chemical reaction between two solutes and a solvent.

[0107] For example, see Figure 8Specifically, in one embodiment, the solute storage member includes a first storage member 350 for storing a first solute and a second storage member 360 for storing a second solute, and the solute outlet includes a first outlet 352 and a second outlet 362. The first storage member 350 is provided with the first outlet 352, and the second storage member 360 is provided with the second outlet 362; an installation channel 3226 is formed between the first storage member 350 and the second storage member 360, and a foam channel 3228 for connecting the foam cavity 3222 and the foam outlet 3224 is formed between the first storage member 350 or the second storage member 360 and the inner wall of the foam cavity 3222; the fourth switch member 370 is inserted into the installation channel 3226, and the switch part 372 is used to block or open the first outlet 352 and the second outlet 362 at the same time. When the third switch member 340 rotates in the direction of opening the foam outlet 3224, the third switch member 340 drives the fourth switch member 370 to move, so that the switch part 372 opens the first outlet 352 and the second outlet 362 at the same time.

[0108] In this way, when the third switch 340 opens the foam outlet 3224, the first solute can enter the foam cavity 3222 through the first outlet 352, and the second solute can enter the foam cavity 3222 through the second outlet 362. The first solute and the second solute chemically react with the solvent to produce foam, which is discharged to the foam outlet 3224 along the foam channel 3228.

[0109] Optionally, the first solute can be sodium carbonate, the second solute can be aluminum sulfate, and the solvent can be water.

[0110] In one embodiment, the switch portion 372 is an elastic body, and when the third switch member 340 rotates in the direction of opening the foam outlet 3224, the fourth switch member 370 moves in the direction away from the installation channel 3226, and at least a portion of the switch portion 372 is deformed and extends into the installation channel 3226 to simultaneously open the first outlet 352 and the second outlet 362. Specifically, the switch portion 372 can be an elastic element such as a rubber body.

[0111] In addition, an embodiment also relates to a range hood, comprising the range hood structure 10 in any of the aforementioned embodiments.

[0112] When the above-mentioned range hood is in use, when the air temperature inside the range hood assembly 100 is lower than the preset value, it means that there is no fire inside the range hood assembly 100. At this time, the switch assembly is deformed to open the air outlet, and smoke can enter or be discharged along the air outlet; when the air temperature inside the range hood assembly 100 is greater than the preset value, it means that there is a fire inside the range hood assembly 100. At this time, the deformed part of the switch assembly recovers the deformation to close the air outlet, thereby blocking the air entering the range hood assembly 100, and then automatically extinguishes the fire, and the fire extinguishing reliability is high.

[0113] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0114] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0115] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0116] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A range hood structure, characterized in that: include: A range hood assembly, wherein the range hood assembly is provided with an air outlet, wherein the air outlet includes an air inlet and an air outlet connected to the air inlet, wherein the range hood assembly includes a fan and a range hood housing with two open ends, wherein the range hood housing includes a first housing and a second housing, wherein both the first housing and the second housing are open at both ends and are hollow inside, wherein one of the open ends of the first housing is connected and connected to one of the open ends of the second housing, wherein the air inlet is provided at the other open end of the second housing, wherein the fan is disposed in the first housing, and wherein the outlet of the fan is the air outlet; and A switch assembly, the switch assembly comprises a first switch assembly and a second switch assembly, the first switch assembly is arranged above the air inlet; the first switch assembly comprises a shielding member and a first switch member, the shielding member is arranged in the second shell and shields the air inlet, the longitudinal cross-section of the inner cavity of the shielding member is trapezoidal, the longitudinal cross-section of the inner cavity of the second shell is trapezoidal and is similar to the longitudinal cross-section of the inner cavity of the shielding member, the shielding member is provided with an air outlet for connecting the air inlet and the inside of the range hood shell, the first switch member is connected to the shielding member, the first switch member is arranged to be deformed to open the air outlet when the air temperature in the range hood shell is lower than a preset value, and the first switch member is restored to deform to close the air outlet when the air temperature in the range hood shell is greater than the preset value, the first switch member is a first memory metal plate; The second switch assembly includes a second switch component, which is covered on the air outlet. The second switch component is configured to deform to open the air outlet when the air temperature inside the range hood housing is lower than a preset value, and to restore the deformation to close the air outlet when the air temperature inside the range hood housing is greater than the preset value. The second switch component is a second memory metal plate.

2. The range hood structure according to claim 1, characterized in that: The first switch member includes a first switch body and a second switch body, the shielding member is provided with a first exhaust area and a second exhaust area, the first exhaust area and the second exhaust area are each provided with at least one exhaust port, the first switch body is connected to the shielding member and is used to open or close the exhaust port located in the first exhaust area, and the second switch body is connected to the shielding member and is used to open or close the exhaust port located in the second exhaust area.

3. The range hood structure according to claim 2, characterized in that: The first switch body is provided with a first fixing portion and a first deforming portion connected to the first fixing portion, and the second switch body is provided with a second fixing portion and a second deforming portion connected to the second fixing portion; The first fixing portion is fixedly disposed in the first exhaust area, and the first deformable portion is used to open or close the exhaust port located in the first exhaust area; The second fixing portion is fixedly disposed in the second exhaust area, and the second deformation portion is used to open or close the exhaust port located in the second exhaust area.

4. The range hood structure according to claim 1, characterized in that: The second switch member includes a third switch body and a fourth switch body, the third switch body includes a third fixing portion and a third deformation portion connected to the third fixing portion, and the fourth switch body includes a fourth fixing portion and a fourth deformation portion connected to the fourth fixing portion; The third fixing portion and the fourth fixing portion are both fixedly arranged on a side of the fan where the air outlet is provided, and the third fixing portion and the fourth fixing portion are arranged opposite to each other. The third deformation portion is used to open or close part of the air outlet, and the fourth deformation portion is used to open or close part of the air outlet. When the third deformation portion and the fourth deformation portion close the air outlet, the third deformation portion and the fourth deformation portion are combined to completely close the open part of the air outlet.

5. The range hood structure according to claim 4, characterized in that: It also includes a one-way valve and an intermediate shell, wherein the intermediate shell is provided with an installation cavity, one end of the intermediate shell is provided with an installation port connected to the installation cavity, and the other opposite end of the intermediate shell is a docking end, the docking end is docked and connected with an open end of the side of the range hood housing close to the air outlet, and the one-way valve is installed at the installation port; When the third deformation part and the fourth deformation part open the air outlet correspondingly, the third deformation part and the fourth deformation part both extend into the installation cavity and contact and cooperate with the one-way valve, and a smoke exhaust channel connected to the one-way valve is formed between the third deformation part and the fourth deformation part.

6. The range hood structure according to claim 1, characterized in that: It also includes a fire extinguishing mechanism, which is arranged inside the range hood assembly. The fire extinguishing mechanism includes a starting assembly, a fire extinguisher and a third switch component. The third switch component can move relative to the foam outlet of the fire extinguisher to open or close the foam outlet. One end of the starting assembly is in transmission cooperation with the deformed part of the switch assembly, and the other end of the starting assembly is connected to the third switch component. When the deformed part of the switch assembly moves in the direction of closing the air outlet, the deformed part of the switch assembly drives the starting assembly to move, and the third switch component moves in a direction away from the foam outlet to open the foam outlet.

7. The range hood structure according to claim 6, characterized in that: The fire extinguishing mechanism comprises a mounting seat, the fire extinguisher is arranged on the mounting seat, the fire extinguisher comprises a mounting shell, the mounting shell is provided with a foam cavity and an injection channel connected with the foam outlet of the foam cavity; The starting assembly includes a trigger member, a first connecting rod and a second connecting rod, the mounting seat and the trigger member are arranged along the height direction of the range hood assembly, the mounting seat is provided with a first mounting hole, and the circumferential side wall of the injection channel is provided with a second mounting hole, one end of the trigger member is transmission-matched with the deformation portion of the switch assembly, the other end of the trigger member passes through the first mounting hole and is rotatably connected to the first connecting rod, the second connecting rod is rotatably inserted into the second mounting hole and extends into the injection channel, the third switch member is fixed to the portion of the second connecting rod located in the injection channel, and the first connecting rod and the portion of the second connecting rod located outside the second mounting hole are rotatably connected; When the deformed portion of the switch assembly moves in the direction of closing the air outlet, the deformed portion of the switch assembly drives the trigger member to move, the trigger member drives the first connecting rod to drive the second connecting rod to rotate, and the second connecting rod drives the third switch member to rotate to open the foam outlet.

8. The range hood structure according to claim 7, characterized in that: The trigger member includes a mounting head, a trigger rod and a third connecting rod, the mounting head is provided with an open groove, one end of the trigger rod is in transmission cooperation with the deformation part of the switch assembly, the other end of the trigger rod is connected to the mounting head, the groove wall of the open groove is provided with a guide hole extending along the depth direction of the open groove, the third connecting rod is movably arranged in the guide hole, one end of the first connecting rod is rotatably connected with the third connecting rod, and the first connecting rod is arranged at an angle with the second connecting rod and the third connecting rod; Among them, when the deformed part of the switch assembly moves in the direction of closing the air outlet, the deformed part of the switch assembly drives the trigger rod to drive the mounting head to move, the first connecting rod drives the third connecting rod to move in the direction of entering the opening groove and the first connecting rod is accommodated in the opening groove, the first connecting rod drives the second connecting rod to rotate, and the second connecting rod drives the third switch component to rotate to open the foam outlet.

9. The range hood structure according to claim 8, characterized in that: The other end of the trigger member is provided with a bent trigger portion, and the trigger portion is arranged on the moving path of the deformation portion of the switch assembly. When the deformation portion of the switch assembly moves in the direction of closing the air outlet, the deformation portion of the switch assembly contacts and cooperates with the trigger portion and pushes the trigger member to drive the third switch member to rotate in a direction away from the foam outlet to open the foam outlet.

10. The range hood structure according to claim 8, characterized in that: There are two first connecting rods, one end of each of the two first connecting rods is rotatably connected to the third connecting rod, and the other end of each of the two first connecting rods is rotatably connected to a portion of the second connecting rod that passes through the second mounting hole.

11. The range hood structure according to claim 8, characterized in that: The side wall of the opening groove is provided with a guide portion for guiding the first connecting rod to enter the opening groove.

12. The range hood structure according to claim 11, characterized in that: The guide portion is an arc-shaped guide surface arranged close to the opening of the opening groove.

13. The range hood structure according to any one of claims 7 to 12, characterized in that: The mounting housing is further provided with a solute storage member disposed in the foam cavity, the solute storage member is provided with a solute cavity and a solute outlet for connecting the solute cavity and the foam cavity, and the foam cavity can be used to contain a solvent that reacts with the solute to produce foam; The fire extinguisher includes a fourth switch component for opening or closing the solute outlet, one end of the fourth switch component extends along the foam outlet and is connected to the third switch component, the fourth switch component is provided with a switch part, the third switch component rotates in the direction of opening the foam outlet to drive the fourth switch component to move, so that the switch part opens the solute outlet.

14. The range hood structure according to claim 13, characterized in that: The solute storage element comprises a first storage element for storing a first solute and a second storage element for storing a second solute, the solute outlet comprises a first outlet and a second outlet, the first storage element is provided with the first outlet, and the second storage element is provided with the second outlet; An installation channel is formed between the first storage member and the second storage member, and a foam channel for connecting the foam cavity and the foam outlet is formed between the first storage member or the second storage member and the inner wall of the foam cavity; the fourth switch member is inserted into the installation channel, and the switch part is used to simultaneously block or open the first outlet and the second outlet, and when the third switch member rotates in the direction of opening the foam outlet, the third switch member drives the fourth switch member to move, so that the switch part simultaneously opens the first outlet and the second outlet.

15. The range hood structure according to claim 14, characterized in that: The switch part is an elastic body. When the third switch part rotates in the direction of opening the foam outlet, the fourth switch part moves in the direction away from the installation channel, and at least part of the switch part is deformed and extends into the installation channel to open the first outlet and the second outlet at the same time.

16. A range hood, characterized in that: The smoke extractor structure comprises the structure described in any one of claims 1 to 15.

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