A power system and a range hood

Abstract

The application relates to the technical field of kitchen appliances, and discloses a power system and a range hood. The power system comprises a machine box, an air outlet seat and an oil guiding structure. The machine box is provided with a machine box oil leakage hole. The air outlet seat is connected with the machine box. The oil guiding structure is used for guiding the oil stains overflowing between the air outlet seat and the machine box into the machine box through the machine box oil leakage hole. In the process of oil fume absorption, oil stains are formed in the machine box. Since the air outlet seat is connected with the machine box, part of the oil stains flows to the area between the air outlet seat and the machine box. The oil stains overflowing between the air outlet seat and the machine box are guided into the machine box through the machine box oil leakage hole by the oil guiding structure, so that the oil stains are collected through internal reflux of the machine box, the outside of the machine box and the air outlet seat are kept clean, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a power system and a range hood. BACKGROUND

[0002] The power system of the range hood is usually arranged at the bottom of the cabinet. The fan of the power system is close to the user, and the noise is large. Therefore, some range hoods arrange the power system in the ceiling to block part of the noise and to keep the fan away from the user, which can effectively reduce the noise. However, the oil leakage phenomenon is prone to occur between the case and the air outlet seat of the power system arranged in the ceiling, and it is not easy to collect the oil stains, resulting in poor user experience. SUMMARY

[0003] Based on the above problems, the purpose of the present application is to provide a power system and a range hood, which can make the oil stains flow back and collect in the case, keep the outside of the case and the air outlet seat clean, and improve the user experience.

[0004] To achieve the above purpose, the following technical solutions are provided:

[0005] In a first aspect, the present application provides a power system, comprising:

[0006] a case, the case being provided with a case oil leakage hole;

[0007] an air outlet seat connected with the case;

[0008] an oil guide structure for guiding the oil stains overflowing between the air outlet seat and the case into the case through the case oil leakage hole.

[0009] As an optional solution of the power system provided by the present application, the oil guide structure comprises an oil guide plate connected with the case and located below the air outlet seat, and an oil guide groove is formed between the oil guide plate and the case, and the oil guide groove is in communication with the case oil leakage hole.

[0010] As an optional solution of the power system provided by the present application, the oil guide plate is arranged to be inclined downward, and the case oil leakage hole is located at the lowest end of the oil guide plate.

[0011] As an optional solution of the power system provided by the present application, the oil guide structure further comprises an oil baffle arranged at the lowest end of the oil guide plate.

[0012] As an optional solution of the power system provided by the present application, the angle between the oil guide plate and the horizontal plane is in the range of 1° to 10°.

[0013] As an optional solution of the power system provided by the present application, the case oil leakage hole is provided with two, and the two case oil leakage holes are respectively located at the two sides of the air outlet seat, and the oil guide plate is provided with two, and the highest ends of the two oil guide plates are connected.

[0014] As an optional solution of the power system provided by the application, the case comprises a case bottom plate, the case is provided with a case air inlet and a case air outlet, and the case bottom plate is inclined downward from the case air outlet to the case air inlet.

[0015] As an optional solution of the power system provided by the application, the included angle between the case bottom plate and the horizontal plane ranges from 1° to 10°.

[0016] As an optional solution of the power system provided by the application, the lowest end of the case bottom plate is provided with an oil guide extension part, which can extend into the pipeline system.

[0017] As an optional solution of the power system provided by the application, the case bottom plate is provided with a screw hole and an oil blocking protrusion, which is used to guide the oil stains away from the screw hole.

[0018] As an optional solution of the power system provided by the application, the oil blocking protrusion is arc-shaped or V-shaped.

[0019] As an optional solution of the power system provided by the application, it further comprises a volute, the volute comprises a volute bottom plate, the volute bottom plate is provided with a volute oil leakage hole, the case is provided with a case air inlet and a case air outlet, and the volute bottom plate is inclined downward from the case air outlet to the case air inlet.

[0020] As an optional solution of the power system provided by the application, the included angle between the volute bottom plate and the horizontal plane ranges from 1° to 5°.

[0021] In the second aspect, the application further provides an extractor hood, which comprises a smoke collecting system, a pipeline system and the above-mentioned power system, and the smoke collecting system is connected with the power system through the pipeline system.

[0022] The application has the following beneficial effects:

[0023] The power system and the extractor hood provided by the application can form oil stains in the case during the oil fume extraction process, and since the air outlet seat is connected with the case, part of the oil stains can flow to the area between the air outlet seat and the case. The oil stains overflowing between the air outlet seat and the case are guided into the case through the oil guide structure and the volute oil leakage hole, so that the oil stains are collected through the internal backflow of the case, the outside of the case and the air outlet seat are kept clean, and the user's use experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the description of the embodiments of the application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the application and the drawings.

[0025] Figure 1 is a structural schematic diagram of an extractor hood provided by the embodiment of the present application, including a power system;

[0026] Figure 2 is a structural schematic diagram of a power system provided by the embodiment of the present application;

[0027] Figure 3 is a sectional view schematic diagram of a machine box and an air outlet seat provided by the embodiment of the present application;

[0028] Figure 4 is a sectional view schematic diagram of a power system provided by the embodiment of the present application;

[0029] Figure 5 is a structural schematic diagram of a machine box and an air outlet seat provided by the embodiment of the present application;

[0030] Figure 6 is a structural schematic diagram of a machine box in a first perspective provided by the embodiment of the present application;

[0031] Figure 7 is a structural schematic diagram of a machine box in a second perspective provided by the embodiment of the present application;

[0032] Figure 8 is a structural schematic diagram of a flow guide provided by the embodiment of the present application;

[0033] Figure 9 is a structural schematic diagram of a machine box in a third perspective provided by the embodiment of the present application;

[0034] Figure 10 is a sectional view schematic diagram of a machine box and a flow guide provided by the embodiment of the present application;

[0035] Figure 11 is a sectional view schematic diagram of a machine box and a flow guide in an installation state provided by the embodiment of the present application;

[0036] Figure 12 is a structural schematic diagram of a flow guide with two symmetrical flow guide inlets provided by the embodiment of the present application;

[0037] Figure 13 is a structural schematic diagram of a machine box in a fourth perspective provided by the embodiment of the present application;

[0038] Figure 14 is a structural schematic diagram of a volute provided by the embodiment of the present application;

[0039] Figure 15 is a structural schematic diagram of a machine box and a volute provided by the embodiment of the present application;

[0040] Figure 16 is a structural schematic diagram of the flexible pipe and compression structure provided by the embodiment of the present application;

[0041] Figure 17 is a partial structural schematic diagram of the flexible pipe and compression structure provided by the embodiment of the present application from a first perspective;

[0042] Figure 18 is a structural schematic diagram of the camshaft and the screw provided by the embodiment of the present application;

[0043] Figure 19 is a partial structural schematic diagram of the flexible pipe and compression structure provided by the embodiment of the present application from a second perspective;

[0044] Figure 20 is a sectional schematic diagram of the flexible pipe and compression structure provided by the embodiment of the present application;

[0045] Figure 21 is a sectional schematic diagram of the camshaft, the compression guide and the flexible pipe provided by the embodiment of the present application;

[0046] Figure 22 is a sectional schematic diagram of the camshaft, the compression guide and the flexible pipe provided by the embodiment of the present application;

[0047] Figure 23 is a structural schematic diagram of the blocking key provided by the embodiment of the present application;

[0048] Figure 24 is a structural schematic diagram of the blocking cover provided by the embodiment of the present application;

[0049] Figure 25 is a structural schematic diagram of the compression guide including the first extension edge and the second extension edge provided by the embodiment of the present application;

[0050] Figure 26 is a structural schematic diagram of the power system and the compression guide provided by the embodiment of the present application;

[0051] Figure 27 is a structural schematic diagram of the compression guide including the guide plate provided by the embodiment of the present application;

[0052] Figure 28 is a structural schematic diagram of the compression guide including the guide plate and the first noise reduction hole plate provided by the embodiment of the present application;

[0053] Figure 29 is a structural schematic diagram of the case including the second noise reduction hole plate provided by the embodiment of the present application.

[0054] In the drawings:

[0055] 1, power system; 2, pipeline system; 3, smoke collection system; 4, roof plate; 5, suspended ceiling; 6, suspended cabinet; 7, wall;

[0056] 11, case; 12, air outlet seat; 13, volute;

[0057] 111, case air inlet; 112, case air outlet; 113, upper cover; 114, case bottom plate; 115, oil guide structure; 116, second noise reduction hole plate; 117, case oil leakage hole; 118, positioning sheet; 119, limiting clamping groove; 1110, limiting frame; 1111, fixing frame; 1112, first clamping groove; 1113, second clamping groove;

[0058] 1141, oil guide extension; 1142, oil blocking protrusion; 1143, screw hole;

[0059] 1151, oil guide plate; 1152, oil blocking plate;

[0060] 131, volute air inlet; 132, outlet flange; 133, volute mounting sheet; 134, dismounting handle;

[0061] 135, volute bottom plate;

[0062] 1331, mounting portion; 1332, connecting portion; 1333, reinforcing rib;

[0063] 21, flow guide; 22, flexible pipe; 23, connecting piece; 24, compression structure;

[0064] 211, flow guide outlet; 212, flow guide inlet; 213, first extension section of outlet; 2131, first sealing groove; 214, second extension section of outlet; 2141, second sealing groove; 215, first plug buckle; 216, second plug buckle; 217, fixing table; 218, flow guide plate; 219, first noise reduction hole plate;

[0065] 2121, first extension edge; 2122, second extension edge;

[0066] 2181, first flow guide surface; 2182, second flow guide surface; 2183, third flow guide surface; 2184, fourth flow guide surface;

[0067] flow guide surface;

[0068] 221, flexible pipe outlet; 222, containing groove; 223, limiting column;

[0069] 241, camshaft; 242, rotating buckle; 243, blocking key; 244, spring; 245, blocking cover;

[0070] 2431, first limiting table; 2432, blocking disc; 2433, second limiting table;

[0071] 2451、first limiting groove; 2452、second limiting groove. DETAILED DESCRIPTION

[0072] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0073] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0074] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0075] As Figures 1 to 29 As shown in the figure, the present embodiment provides a power system 1, which comprises a case 11, an air outlet seat 12 and an oil guiding structure 115, the case 11 is provided with a case oil leakage hole 117, the air outlet seat 12 is connected with the case 11, and the oil guiding structure 115 is used for guiding the oil overflow between the air outlet seat 12 and the case 11 to the case 11 through the case oil leakage hole 117.

[0076] During the oil smoke absorption process, oil stains will be formed in the cabinet 11. Since the air outlet seat 12 is connected with the cabinet 11, part of the oil stains will flow to the area between the air outlet seat 12 and the cabinet 11. The oil stains overflowing between the air outlet seat 12 and the cabinet 11 are guided to the cabinet 11 through the cabinet oil leakage hole 117 by the oil guiding structure 115, so that the oil stains are collected through the internal backflow of the cabinet 11, the outside of the cabinet 11 and the air outlet seat 12 are kept clean, and the user experience is improved.

[0077] Optionally, the oil guiding structure 115 includes an oil guiding plate 1151 connected with the cabinet 11 and located below the air outlet seat 12. An oil guiding groove is formed between the oil guiding plate 1151 and the cabinet 11 and communicates with the cabinet oil leakage hole 117. The oil guiding plate 1151 is gradually inclined downward from the cabinet air outlet 112 to the cabinet air inlet 111 to form the oil guiding groove, so as to ensure that the oil stains always flow along the outer wall of the cabinet 11 to the cabinet oil leakage hole 117. Optionally, the oil guiding plate 1151 is inclined downward, and the cabinet oil leakage hole 117 is located at the lowest end of the oil guiding plate 1151, so as to ensure that the oil stains flow back to the cabinet 11 through the cabinet oil leakage hole 117 under the action of gravity.

[0078] Optionally, the oil guiding structure 115 further includes an oil blocking plate 1152 arranged at the lowest end of the oil guiding plate 1151. The cabinet oil leakage hole 117 is located at the inner side of the oil blocking plate 1152. When the oil stains flow to the oil blocking plate 1152, they are gathered and enter the cabinet 11 through the cabinet oil leakage hole 117. Optionally, the angle between the oil guiding plate 1151 and the horizontal plane is in the range of 1° to 10°. For example, the angle between the oil guiding plate 1151 and the horizontal plane can be 3°, 5° or 7°, etc.

[0079] Optionally, the cabinet oil leakage hole 117 is provided with two cabinet oil leakage holes 117 located on both sides of the air outlet seat 12, and the oil guiding plate 1151 is provided with two oil guiding plates 1151 connected at the highest ends. The two oil guiding plates 1151 are inclined downward to form an inverted V structure, so as to ensure that the oil stains flow to both sides under the action of gravity. The V-shaped angle of the inverted V structure is in the range of 160° to 178°.

[0080] Optionally, the cabinet 11 includes a cabinet bottom plate 114. The cabinet 11 is provided with a cabinet air inlet 111 and a cabinet air outlet 112. The cabinet bottom plate 114 is inclined downward from the cabinet air outlet 112 to the cabinet air inlet 111, so as to ensure that the oil stains in the cabinet 11 flow gradually to the cabinet air inlet 111 and then out of the cabinet 11 under the action of gravity. Optionally, the angle between the cabinet bottom plate 114 and the horizontal plane is in the range of 1° to 10°. For example, the angle between the cabinet bottom plate 114 and the horizontal plane can be 3°, 5° or 7°, etc.

[0081] Optionally, the lowest end of the chassis bottom plate 114 is provided with an oil guide extension 1141 capable of extending into the pipeline system 2. Thus, it is ensured that the oil can smoothly enter the inside of the flow guide 21 of the pipeline system 2, thereby avoiding the contact surface between the lower side of the chassis air inlet 111 and the lower side of the flow guide 21, and avoiding the oil flowing out from the gap between the two contact surfaces.

[0082] Optionally, the chassis bottom plate 114 is provided with a screw hole 1143 and an oil blocking protrusion 1142 for guiding the oil to avoid the screw hole 1143. The chassis 11 is connected with the flow guide 21, and the chassis bottom plate 114 is connected with the lower side of the flow guide 21 through screw fastening at the most inclined lowest end. When the oil flows along the chassis bottom plate 114 to the chassis air inlet 111, it will pass through the screw hole 1143, which is prone to oil leakage and overflow. By providing the oil blocking protrusion 1142 upstream of the oil flow path of the screw hole 1143, the oil blocking protrusion 1142 has a structure extending to both sides, which ensures that the oil flows to both sides along the oil blocking protrusion 1142, thereby avoiding the screw hole 1143 and reducing the risk of oil leakage and overflow. Optionally, the oil blocking protrusion 1142 is arc-shaped or V-shaped, thereby reducing the processing difficulty of the oil blocking protrusion 1142.

[0083] Optionally, the power system 1 further comprises a volute 13, the volute 13 comprising a volute bottom plate 135 provided with a volute oil leakage hole, the chassis 11 being provided with a chassis air inlet 111 and a chassis air outlet 112, and the volute bottom plate 135 being inclined downward from the chassis air outlet 112 to the chassis air inlet 111. The air inlet of the volute 13 faces upward and forms an air inlet gap with the inner wall of the chassis 11. The volute oil leakage hole is arranged at the lowest point of the volute bottom plate 135, ensuring that the oil inside the volute 13 can flow out smoothly and fall onto the chassis bottom plate 114, and then flow out of the chassis 11. The air outlet seat 12 communicates with the volute 13 and is fastened to the outside of the side wall of the chassis air outlet 112 through screws; the oil inside the air outlet seat 12 will flow to the connection between the air outlet seat 12 and the side wall of the chassis 11, thereby having the risk of oil overflow. Optionally, the angle between the volute bottom plate 135 and the horizontal plane is in the range of 1° to 5°. For example, the angle between the volute bottom plate 135 and the horizontal plane can be 2°, 3° or 4°, etc.

[0084] The embodiment also provides an extractor hood, which comprises the smoke collecting system 3, the pipeline system 2 and the power system 1 described above, the smoke collecting system 3 is connected with the power system 1 through the pipeline system 2. The power system 1 is arranged between the ceiling 5 and the floor 4 and close to the wall 7, the hanging cabinet 6 is hung on the ceiling 5, and the smoke collecting system 3 is arranged below the pipeline system 2. The pipeline system 2 comprises the flow guide 21, the flexible pipe 22 and the connecting piece 23, the flow guide 21 is arranged on the side of the power system 1, opposite to the air outlet seat 12, and forms an air inlet passage, the air inlet and the air outlet of the flow guide 21 are orthogonal to each other. The smoke collecting system 3 is communicated with the flexible pipe 22 through the connecting piece 23, the flexible pipe 22 is communicated with the flow guide 21, the flow guide 21 is communicated with the power system 1, and the fan of the power system 1 is a single air inlet fan, the air inlet of the fan is preferably upward. The air inlet 111 of the machine box is arranged on the side of the smoke collecting system 3, used for communicating with the pipeline system 2 of the extractor hood, and then communicating with the smoke collecting system 3. The air outlet 112 of the machine box is arranged on the side away from the smoke collecting system 3 (towards the side of the public flue), used for mounting the volute 13 and the air outlet seat 12, so as to facilitate the exhaust of the oil fume to the public flue. The machine box 11 further comprises the upper cover 113, the upper cover 113 is used for closing the machine box 11.

[0085] In some embodiments, the flow guide 21 is provided with the flow guide inlet 212 and the flow guide outlet 211, the flow guide inlet 212 is connected with the flexible pipe 22, the flow guide 21 is provided with the fixing table 217, and the fixing table 217 is arranged on the inner side of the flow guide outlet 211; the machine box 11 is arranged on the flow guide outlet 211, the machine box 11 is provided with the fixing frame 1111, the fixing frame 1111 is fixedly connected with the fixing table 217 through the fastener, and the fastener is arranged obliquely.

[0086] Since the fastener is arranged obliquely, the installer can insert the installation tool into the flow guide 21 through the flow guide inlet 212 to install the fastener, realize the fixed connection between the fixing frame 1111 and the fixing table 217, and then realize the convenient disassembly and assembly of the flow guide 21 and the machine box 11. The fixing table 217 has the installation inclined surface and the inclined bolt through hole, the installation inclined surface is an inclined surface facing the flow guide inlet 212, the normal line of the installation inclined surface can fall within the range of the flow guide inlet 212, and the installation process is not interfered by the surrounding wall surface. The fixing frame 1111 has the inner fixing inclined surface, the inclination direction and the angle of the inner fixing inclined surface are consistent with those of the installation inclined surface of the fixing table 217, and the threaded hole corresponding to the bolt through hole is arranged on the inner fixing inclined surface.

[0087] Optionally, the flow guide 21 is provided with a first plug 215 located on the side of the flow guide outlet 211 close to the roof plate 4, and the cabinet 11 is provided with a first clamping groove 1112 matched with the first plug 215. The first plug 215 extends away from the flow guide outlet 211 towards the roof plate 4, and the free end of the side of the first plug 215 away from the flow guide outlet 211 is chamfered to facilitate insertion into the first clamping groove 1112. The first plug 215 ensures that the sealing element can be compressed and bears the torque generated by the gravity of the flow guide 21, thereby ensuring the sealing and stability of the flow guide 21. To facilitate the insertion of the first plug 215 and the first clamping groove 1112, the cabinet 11 is optionally provided with a first extension wall, and two first limiting plates are arranged on the first extension wall at intervals to form the first clamping groove 1112.

[0088] Optionally, the flow guide 21 is provided with a second plug 216 located on the side of the flow guide outlet 211 close to the wall 7, and the cabinet 11 is provided with a second clamping groove 1113 matched with the second plug 216. The second plug 216 extends away from the flow guide outlet 211 towards the wall 7, and the free end of the side of the second plug 216 away from the flow guide outlet 211 is chamfered to facilitate insertion into the second clamping groove 1113. The second plug 216 ensures that the sealing element can be compressed and bears the torque generated by the gravity of the flow guide 21, thereby ensuring the sealing and stability of the flow guide 21. To facilitate the insertion of the second plug 216 and the second clamping groove 1113, the cabinet 11 is optionally provided with a second extension wall, and two second limiting plates are arranged on the second extension wall at intervals to form the second clamping groove 1113.

[0089] Optionally, the width of the first clamping groove 1112 is greater than the width of the first plug 215, the width of the second clamping groove 1113 is greater than the width of the second plug 216, and the depth of the second clamping groove 1113 is less than the width difference between the first clamping groove 1112 and the first plug 215. The width of the first clamping groove 1112 is t1, the width of the first plug 215 is t2, the width of the second clamping groove 1113 is t3, the depth is b1, and the width of the second plug 216 is t4. Among them, t2 < t1, t4 < t3, t2-t1 > b1. The above relationship can realize that the first plug 215 is inserted into the first clamping groove 1112 and is farther away from the wall 7 side, at this time the second plug 216 does not enter the second clamping groove 1113, then the flow guide 21 is pushed towards the wall 7 side, so that the second plug 216 is inserted into the second clamping groove 1113. Under the limitation of the plug and the slot, the flow guide 21 and the cabinet 11 are compressed, and can resist the gravity torque of the flow guide 21.

[0090] To facilitate the connection of the flow guide 21 and the cabinet 11, optionally, the flow guide 21 is provided with an outlet first extension section 213. The outlet first extension section 213 is located on the side of the flow guide outlet 211 away from the wall 7. The outlet first extension section 213 extends from the flow guide outlet 211 to the cabinet 11. The outlet first extension section 213 is connected with the cabinet 11. Optionally, a first sealing element is arranged between the outlet first extension section 213 and the cabinet 11. The outlet first extension section 213 is provided with a first sealing groove 2131. The first sealing element is arranged in the first sealing groove 2131, thereby ensuring the sealing of the contact surface between the outlet first extension section 213 and the cabinet 11.

[0091] To further facilitate the connection of the flow guide 21 and the cabinet 11, optionally, the flow guide 21 is provided with an outlet second extension section 214. The outlet second extension section 214 is located on the side of the flow guide outlet 211 away from the roof plate 4. The outlet second extension section 214 extends outward in the direction away from the wall 7. The outlet second extension section 214 is connected with the cabinet 11. A plurality of through holes corresponding to the screw holes 1143 on the cabinet 11 are uniformly arranged on the outlet first extension section 213 and the outlet second extension section 214, for passing through fastening screws. Optionally, a second sealing element is arranged between the outlet second extension section 214 and the cabinet 11. The outlet second extension section 214 is provided with a second sealing groove 2141. The second sealing element is arranged in the second sealing groove 2141, thereby ensuring the sealing of the contact surface between the outlet second extension section 214 and the cabinet 11.

[0092] Optionally, two flow guide inlets 212 are symmetrically arranged on the flow guide 21. One of the two flow guide inlets 212 is in communication with the flexible pipe 22, and the other is blocked. The flow guide outlet 211 of the flow guide 21 can be directed to the left or the right, realizing the reversing installation of the cabinet air outlet 112, and further adapting to the communication of public flues in different directions.

[0093] Optionally, the flow guide 21 is provided with reinforcing ribs. The reinforcing ribs are arranged on the outer surface of the flow guide 21, ensuring the surface strength of the flow guide 21 and preventing deformation under the action of gravity.

[0094] In some embodiments, the cabinet 11 is provided with a cabinet air inlet 111 and a cabinet air outlet 112. The cabinet 11 is provided with a positioning piece 118. The positioning piece 118 is located between the cabinet air inlet 111 and the cabinet air outlet 112. The fan includes a volute 13. The volute 13 is provided with a volute mounting piece 133. The volute mounting piece 133 is fixedly connected with the positioning piece 118.

[0095] When installing the fan, the entire fan is loaded from the cabinet air inlet 111. The volute mounting piece 133 of the volute 13 is fixedly connected with the positioning piece 118 in the cabinet 11, realizing the convenient and accurate installation of the volute 13.

[0096] Optionally, the casing air outlet 112 is provided with a limiting slot 119, and the volute 13 is provided with an outlet flange 132 capable of extending into the limiting slot 119 and fixedly connected with the casing 11 to ensure the accuracy of the communication between the volute 13 and the air outlet seat 12. The outlet flange 132 is arranged at the volute air outlet, and the outlet flange 132 is uniformly provided with a plurality of flange mounting holes corresponding to the fan mounting threaded holes and connected by screws. Optionally, the casing 11 is provided with a limiting frame 1110 surrounding the outer circumferential side of the casing air outlet 112, and the limiting frame 1110 surrounds to form the limiting slot 119, so that the thickness requirement of the casing 11 is reduced without needing to open a slot on the casing 11.

[0097] Optionally, the volute mounting piece 133 includes a mounting portion 1331 and a connecting portion 1332, the mounting portion 1331 is connected with the positioning piece 118, and the connecting portion 1332 is connected with the volute 13. The connecting portion 1332 extends along the outer contour line of the volute 13, and the mounting portion 1331 is arranged at an angle with the connecting portion 1332. During installation, the volute 13 is pushed into the casing 11 from the casing air inlet 111, the outlet flange 132 is inserted into the limiting slot 119 and passes through the casing air outlet 112, and the screw is screwed from the inside to the outside of the outlet flange 132 of the casing 11 to fasten the volute air outlet once. The mounting portion 1331 of the volute mounting piece 133 is attached to the positioning piece 118 of the fan, and the fastening screw is installed from the side of the casing air inlet 111 to ensure the stability of the fan during operation. In order to ensure the structural strength of the volute mounting piece 133, the volute mounting piece 133 further includes a reinforcing rib 1333, one side of the reinforcing rib 1333 is connected with the mounting portion 1331, and the other side is connected with the connecting portion 1332.

[0098] Optionally, the volute 13 is provided with a dismounting handle 134. The dismounting handle 134 provides a force point for pushing and pulling the fan, facilitating dismounting. In order to facilitate operation, the dismounting handle 134 is arranged on the side of the volute 13 facing the casing air inlet 111.

[0099] In order to ensure the stability of the volute 13 installation, the positioning piece 118 and the volute mounting piece 133 are both provided with at least two. The maximum width of the volute 13 is b2, the spacing between the free ends of the two volute mounting pieces 133 is b3, x2>b3>x1>b2, in the above relationship, x2>b3 ensures that the volute 13 has enough space to pass through the casing air inlet 111, b3>x1 ensures that the mounting portion 1331 of the volute mounting piece 133 has enough matching surface with the positioning piece 118, and x1>b2 ensures that the volute 13 can smoothly pass between the two positioning pieces 118. Optionally, the spacing between the two positioning pieces 118 is less than the width of the casing air inlet 111, facilitating the dismounting of the fastening screw on the positioning piece 118 from the casing air inlet 111.

[0100] In some embodiments, the flow guide 21 is provided with a flow guide inlet 212; the flexible pipe 22 is connected with the flow guide 21, and the flexible pipe 22 is provided with a flexible pipe outlet 221 in communication with the flow guide inlet 212; the pressing structure 24 comprises a cam shaft 241 rotatably arranged on the flexible pipe 22, and the cam shaft 241 is provided with a cam, which can press the flow guide inlet 212 and the flexible pipe outlet 221.

[0101] Rotating the cam shaft 241 makes the cam press the flow guide inlet 212 and the flexible pipe outlet 221, so as to ensure that the connection between the flow guide 21 and the wall side of the flexible pipe 22 is kept in a tightly sealed state, and the sealed connection between the flexible pipe 22 and the flow guide 21 is realized.

[0102] Optionally, the flow guide inlet 212 is provided with a first extension edge 2121, and the cam can press the first extension edge 2121 in the flexible pipe 22. The first extension edge 2121 is located on one side of the flow guide inlet 212, and the remaining three sides of the flow guide inlet 212 are provided with a second extension edge 2122, the first extension edge 2121 is in pressing fit with the cam, and the second extension edge 2122 is shorter and used to press the sealing ring on the flexible pipe outlet 221.

[0103] Optionally, the pressing structure 24 further comprises a screw buckle 242 and a blocking key 243, the screw buckle 242 is connected with the cam shaft 241 and located outside the flexible pipe 22, and the blocking key 243 can abut against the screw buckle 242 to limit the rotation of the screw buckle 242. By limiting the rotation of the screw buckle 242 through the blocking key 243, it is ensured that the cam shaft 241 always presses the flow guide inlet 212 and the flexible pipe outlet 221. The cam shaft 241 penetrates the wall side of the flexible pipe outlet 221, and the two ends of the cam shaft 241 protrude out of the flexible pipe outlet 221 and are provided with the screw buckle 242 at the ends. Except for the wall side, the flexible pipe outlet 221 is provided with screw holes 1143 on the other three sides, which are used for further fastening connection between the flexible pipe 22 and the flow guide 21, so as to ensure the stability and reliability of the connection between the flexible pipe 22 and the flow guide 21. The flexible pipe outlet 221 is provided with a shaft hole at the wall position, and the cam shaft 241 penetrates the shaft hole.

[0104] Optionally, the pressing structure 24 further comprises a spring 244, and the blocking key 243 can compress the spring 244 and be separated from the screw buckle 242. Rotating the screw buckle 242 makes the cam shaft 241 rotate until the first extension edge 2121 is pressed, at which time the blocking key 243 is released, and under the pushing action of the spring 244, the blocking key 243 is kept in the state of being popped out and blocks the reverse reset of the screw buckle 242. In order to make the spring 244 be in a relatively closed working environment, optionally, the flexible pipe 22 is provided with a containing groove 222, one end of the spring 244 is arranged in the containing groove 222, and the other end abuts against the blocking key 243. In order to facilitate the installation of the spring 244, optionally, the containing groove 222 is provided with a limiting column 223, and the spring 244 is sleeved on the limiting column 223.

[0105] Optionally, a cover 245 is provided on the flexible tube 22, and a stop key 243 is slidably engaged with the cover 245. The stop key 243 can slide relative to the cover 245, allowing it to slide to a position that blocks the reverse reset of the latch 242, or to a position that avoids the latch 242, allowing the latch 242 to reset in the reverse direction. Optionally, the stop key 243 includes a first limiting platform 2431 and a stop plate 2432, the stop plate 2432 being able to abut against the latch 242, and the cover 245 being provided with a first limiting groove 2451 that engages with the first limiting platform 2431. With the cooperation of the first limiting platform 2431 and the first limiting groove 2451, the rotation of the stop key 243 can be restricted, thereby losing its blocking effect on the latch 242. Optionally, the stop key 243 further includes a second limiting platform 2433, with the first limiting platform 2431 located between the stop plate 2432 and the second limiting platform 2433. A second limiting groove 2452, which mates with the second limiting platform 2433, is provided inside the cover 245. The cooperation of the second limiting platform 2433 and the second limiting groove 2452 prevents the stop key 243 from disengaging from the cover 245.

[0106] In some embodiments, the chassis 11 is provided with a chassis air inlet 111; the guide member 21 is provided with a guide member inlet 212 and a guide member outlet 211, and the guide member outlet 211 is connected to the chassis air inlet 111; the guide plate 218 is provided inside the guide member 21, and the guide plate 218 is provided with multiple guide surfaces converging at a point, and the multiple guide surfaces protrude towards the guide member inlet 212, and the projection of the convergence point of the multiple guide surfaces is located inside the guide member inlet 212.

[0107] Since multiple guide surfaces protrude towards the guide inlet 212, the airflow at the guide inlet 212 is guided by the guide plate 218 to deflect into the housing 11, guiding the airflow to flow in all directions and reducing the impact loss of the airflow. The energy loss is greatest when the airflow is perpendicular to the impact surface. Therefore, the projection of the convergence point of multiple guide surfaces is located inside the guide inlet 212. In other words, when the airflow impact surface is tilted at a certain angle, the airflow will extend the tilted surface to flow, greatly reducing the flow loss caused by the impact, thereby reducing noise.

[0108] For the convenience of processing, optionally, the plurality of flow guide surfaces are planes. For the convenience of assembly, optionally, the plurality of flow guide surfaces include a first flow guide surface 2181, a second flow guide surface 2182, a third flow guide surface 2183, and a fourth flow guide surface 2184, which are sequentially connected and converge at a point. Optionally, the area of the first flow guide surface 2181 is greater than that of the third flow guide surface 2183, the area of the first flow guide surface 2181 is greater than that of the fourth flow guide surface 2184, the area of the second flow guide surface 2182 is greater than that of the third flow guide surface 2183, and the area of the second flow guide surface 2182 is greater than that of the fourth flow guide surface 2184. The first flow guide surface 2181 and the second flow guide surface 2182 have a strong flow guiding effect and can guide most of the airflow to flow out of the flow guide piece outlet 211.

[0109] Optionally, the side wall of the flow guide piece 21 opposite to the air inlet 111 of the cabinet is a flow guide curved surface, which reduces the impact loss, reduces the flow resistance, and can realize the size reduction of the flow guide piece 21.

[0110] To reduce the noise at the flow guide curved surface, optionally, the inner side of the flow guide curved surface is provided with a first noise reduction hole plate 219. Optionally, a first noise reduction layer is arranged between the first noise reduction hole plate 219 and the flow guide curved surface, further absorbing the noise generated by the airflow impacting the flow guide curved surface.

[0111] Optionally, the inner side of the upper cover 113 is provided with a second noise reduction hole plate 116. The air inlet 131 of the volute is upward and opposite to the upper cover 113. Since a part of the noise will be transmitted from the air inlet 131 of the volute, the second noise reduction hole plate 116 can achieve the noise reduction effect. Optionally, a second noise reduction layer is arranged between the second noise reduction hole plate 116 and the upper cover 113, thereby further absorbing the noise generated by the airflow impacting the upper cover 113.

[0112] Note that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A power system, characterized in that, include: The chassis (11) is provided with an oil drain hole (117); The air outlet (12) is connected to the chassis (11); An oil guiding structure (115) is provided, comprising an oil guiding plate (1151) and an oil baffle plate (1152). The oil guiding plate (1151) is connected to the chassis (11) and located below the air outlet seat (12). An oil guiding groove is formed between the oil guiding plate (1151) and the chassis (11), and the oil guiding groove communicates with the oil leakage hole (117) of the chassis. The oil guiding plate (1151) is inclined downwards, and the chassis... The oil leakage hole (117) is located at the lowest end of the oil guide plate (1151), the oil baffle plate (1152) is located at the lowest end of the oil guide plate (1151), the chassis oil leakage hole (117) is located inside the oil baffle plate (1152), when the oil overflowing between the air outlet seat (12) and the chassis (11) flows to the oil baffle plate (1152) it gathers and enters the interior of the chassis (11) through the chassis oil leakage hole (117).

2. The power system according to claim 1, characterized in that, The angle between the oil guide plate (1151) and the horizontal plane ranges from 1° to 10°.

3. The power system according to claim 1, characterized in that, There are two oil leakage holes (117) in the chassis, which are located on both sides of the air outlet seat (12). There are two oil guide plates (1151), and the highest ends of the two oil guide plates (1151) are connected.

4. The power system according to claim 1, characterized in that, The chassis (11) includes a chassis base plate (114), the chassis (11) is provided with a chassis air inlet (111) and a chassis air outlet (112), and the chassis base plate (114) slopes downward from the chassis air outlet (112) to the chassis air inlet (111).

5. The power system according to claim 4, characterized in that, The angle between the chassis base plate (114) and the horizontal plane ranges from 1° to 10°.

6. The power system according to claim 4, characterized in that, The lowest end of the chassis base plate (114) is provided with an oil guide extension (1141), which can extend into the pipeline system (2).

7. The power system according to claim 4, characterized in that, The chassis bottom plate (114) is provided with screw holes (1143) and oil-blocking protrusions (1142), the oil-blocking protrusions (1142) being used to guide oil stains away from the screw holes (1143).

8. The power system according to claim 7, characterized in that, The oil-blocking protrusion (1142) is arc-shaped or V-shaped.

9. The power system according to claim 1, characterized in that, It also includes a volute (13), the volute (13) includes a volute base plate (135), the volute base plate (135) is provided with an oil leakage hole for the volute (13), the chassis (11) is provided with a chassis air inlet (111) and a chassis air outlet (112), and the volute base plate (135) slopes downward from the chassis air outlet (112) to the chassis air inlet (111).

10. The power system according to claim 9, characterized in that, The angle between the volute bottom plate (135) and the horizontal plane ranges from 1° to 5°.

11. A range hood, characterized in that, It includes a smoke collection system (3), a pipeline system (2), and a power system as described in any one of claims 1-10, wherein the smoke collection system (3) is connected to the power system through the pipeline system (2).

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