Range hood and assembly method thereof

Abstract

The range hood comprises a fan cover and a fan, the fan cover comprises a top plate and a surrounding plate, the top plate covers a top opening of the surrounding plate, the top plate and the surrounding plate are matched to define a containing cavity, the top plate is provided with a first connecting part, the bottom of the surrounding plate is provided with a clamping part, the fan is contained in the containing cavity, and the fan comprises a volute. The volute comprises a shell body, a lap joint part and a second connecting part, the lap joint part and the second connecting part are arranged on the shell body, the lap joint part is matched with the clamping part in a clamped mode, and the first connecting part and the second connecting part are connected in a matched mode so that the shell body can be fixed to the fan cover. According to the technical scheme, the connecting stability of the volute and the fan cover can be improved, and the assembling process is convenient and fast.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a range hood and an assembly method thereof. Background Art

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. It is used to extract cooking waste gases such as oil smoke and water vapor generated by cooking and discharge the waste gases to the outside.

[0003] A range hood usually includes a fan cover and a fan. The fan is mostly fixedly installed in the fan cover. During use, the fan motor drives the fan wheel to rotate to suck indoor cooking exhaust gas into the range hood.

[0004] In the related art, when assembling a range hood, the volute of the fan is generally only connected to the top plate of the fan cover. However, under this connection method, when the overall weight of the fan is too heavy, the connection stability between the fan and the top plate is poor, resulting in poor overall stability of the fan in the fan cover. Summary of the invention

[0005] The embodiment of the present application provides a range hood and an assembly method thereof, which can improve the connection stability between the volute and the fan cover, and the assembly process is convenient and quick.

[0006] In a first aspect, an embodiment of the present application provides a range hood, the range hood comprising:

[0007] A fan cover, comprising a top plate and a surrounding plate, wherein the top plate covers the top opening of the surrounding plate and cooperates with the surrounding plate to form a receiving cavity, the top plate has a first connecting portion, and the bottom of the surrounding plate has a clamping portion; and

[0008] A fan is accommodated in the accommodating cavity, and the fan includes a volute, and the volute includes a shell body and a lap joint and a second connecting portion arranged on the shell body, wherein the lap joint is engaged with the clamping portion, and the first connecting portion is engaged with the second connecting portion to fix the shell body to the fan cover.

[0009] Based on the range hood of the embodiment of the present application, the overlap portion and the clamping portion are clamped together, and the second connection portion is connected to the first connection portion at the same time. Compared with the case where the fan is only connected to the top plate of the fan cover, the stability of the connection between the fan and the fan cover can be improved, so that the fan remains stable during operation and does not shake easily. In the assembly process, the overlap portion and the clamping portion can be coordinated, as well as the second connection portion and the first connection portion, so that the fan and the fan cover can be pre-fixed and installed, which is convenient for the staff to carry out the subsequent final fixation, the operation is convenient, and the assembly efficiency can be effectively improved.

[0010] In some embodiments, the overlapping portion includes a connecting end connected to the shell body and an overlapping end away from the shell body, and the overlapping end is clamped to the clamping portion;

[0011] The surface of the clamping portion is provided with an avoidance hole for the overlapping end to pass through.

[0012] In some embodiments, the width of the overlapping end gradually decreases in a direction from the connecting end to the clamping portion.

[0013] In some embodiments, the overlapping portion includes a connecting section, an extending section and an overlapping section which are connected in sequence, an end of the connecting section away from the extending section is formed as the connecting end, and an end of the overlapping section away from the extending section is formed as the overlapping end;

[0014] The connecting section and the overlapping section respectively form an angle with the extending section, and the extending section extends in a direction from the connecting section to the overlapping section, so that the connecting section and the overlapping section have a height difference.

[0015] In some embodiments, the overlapping portion is provided with a first connecting hole, the holding portion is provided with a second connecting hole, and the overlapping portion and the holding portion are fixedly connected by a first fastener that cooperates with the first connecting hole and the second connecting hole.

[0016] In some embodiments, the first connection portion is a hanging groove formed on the end surface of the outlet end of the shell body, and the second connection portion is a hook provided on the top plate, and the hook is hung on the hanging groove.

[0017] In some embodiments, the hook includes a connecting edge and a hook body, the connecting edge is connected to the top plate, and the hook body is hung in the hanging groove;

[0018] The hook body comprises a hook section and a folding edge section, wherein the hook section is connected between the connecting edge and the folding edge section;

[0019] There is an angle between the folded edge section and the hook section, and the folded edge section and the hook section are used to jointly stop the surface of the shell body adjacent to the hanging groove.

[0020] In some embodiments, the hook has an insertion end, and at least a portion of an end surface of the insertion end is formed with a first guide surface, and the first guide surface is used for guiding and cooperating with a groove side wall of the hanging groove.

[0021] In some embodiments, the hanging groove includes a first groove section and a second groove section that are connected, and during the process of the hook being hung in the hanging groove, the hook moves from the first groove section to the second groove section;

[0022] Wherein, in the hooking direction of the hook, the cross-sectional area of ​​the second groove section is gradually reduced.

[0023] In some embodiments, a second guide surface is formed on a groove wall portion of the hanging groove, and the second guide surface is used to guide and cooperate with the hook when the hook is hung in the hanging groove.

[0024] In some embodiments, the number of the hooks is multiple, and the multiple hooks are arranged at intervals along the circumference of the top plate, and the number of the hanging grooves corresponds to the number of the hooks;

[0025] And / or, the hanging groove is located in the middle of the end surface of the outlet end.

[0026] In some embodiments, the outlet end face of the shell body is provided with a third connecting hole, the top plate is provided with a fourth connecting hole, and the shell body and the top plate are fixedly connected by a second fastener that cooperates with the third connecting hole and the fourth connecting hole.

[0027] In some embodiments, the overlapping portion and the second connecting portion are located on opposite sides of the shell body along the length direction thereof.

[0028] In some embodiments, the fan guard further comprises a cover plate, and an opening communicating with the accommodating cavity is formed at the rear of the cover plate;

[0029] The cover plate is arranged on the opening and is fixedly connected to the shell body.

[0030] In some embodiments, the cover plate includes a plate body and a profiled portion, the plate body is covered on the opening and fixedly connected to the shell body;

[0031] The pressed portion is disposed on a surface of the plate body facing away from the shell body, and is raised in a direction facing away from the shell body.

[0032] In some embodiments, the volute further comprises a connecting bracket, wherein the connecting bracket comprises a main body and two connecting legs respectively connected to opposite sides of the main body;

[0033] The main body is fixedly connected to the cover plate, and each of the connecting legs is fixedly connected to the shell body, so that the cover plate is fixedly connected to the shell body.

[0034] In a second aspect, an embodiment of the present application provides a method for assembling a range hood, the method comprising the following steps:

[0035] Connecting the top plate to the enclosure plate, wherein the top plate and the enclosure plate cooperate to form a receiving cavity;

[0036] Install the fan into the accommodating cavity;

[0037] The overlapping part of the shell body of the volute is clamped on the clamping part of the enclosure, and the second connecting part of the shell body is connected to the first connecting part of the top plate, so as to realize the pre-positioning installation of the shell body and the fan cover;

[0038] The shell body is fixedly connected to the top plate and the side plate respectively;

[0039] The cover plate of the fan cover is placed on the opening behind the enclosure, and the cover plate is connected to the shell body at the bottom of the valley;

[0040] The enclosure is fixedly connected to the smoke collecting hood of the range hood to achieve a fixed connection between the fan cover and the smoke collecting hood.

[0041] Based on the range hood of the embodiment of the present application, the pre-positioning installation of the volute, the surrounding plate and the top plate can be achieved through the clamping connection between the overlapping part and the clamping part, and the cooperative connection between the second connecting part and the first connecting part. At this time, the final connection position of the shell body of the volute and the surrounding plate and the top plate can also be positioned and aligned, so that the staff can carry out the final installation of the volute, the surrounding plate and the top plate, with accurate positioning and convenient operation. At the same time, in the actual assembly process, the complete assembly process can be completed by one staff member, which can also reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 A cross-sectional schematic diagram of an embodiment of the range hood of the present application;

[0044] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0045] Figure 3 for Figure 1 Schematic diagram of the assembly of the fan and fan cover of the central range hood;

[0046] Figure 4 for Figure 1 Schematic diagram of the assembly of the fan and fan cover of the central range hood;

[0047] Figure 5 for Figure 1 Schematic diagram of the assembly of the fan and fan cover of the central range hood;

[0048] Figure 6 for Figure 1 Schematic diagram of the assembly of the fan and fan cover of the central range hood;

[0049] Figure 7 for Figure 1 A schematic diagram of the structure of a fan of a central range hood;

[0050] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0051] Fig. 9 for Figure 7 A partial enlarged view of point C in the middle;

[0052] Fig.10 for Figure 1 A schematic diagram of the structure of a fan cover of a central range hood;

[0053] Fig.11 for Fig.10 A partial enlarged view of point D in the middle;

[0054] Fig.12 A cross-sectional schematic diagram of the range hood of the present application from another perspective;

[0055] Fig.13 for Fig.12 A partial enlarged view of point E in the middle;

[0056] Fig.14 It is a schematic flow chart of an embodiment of an assembly method of a range hood of the present application.

[0057] Description of Figure Numbers:

[0058] 100, range hood; 10, fan cover; 10a, accommodating chamber; 11, top plate; 111, first connecting portion; 113, hook; 113a, insertion end; 113b, first guide surface; 1131, connecting edge; 1133, hook body; 1133a, hook section; 1133b, folding edge section; 115, fourth connecting hole; 13, enclosure; 13a, open; 131, holding portion; 131a, second connecting hole; 1311, step surface; 1311a, avoidance hole; 15, cover plate; 151, plate body; 153, press-type portion; 3 0. Fan; 31. Volute; 311. Shell body; 311a. Outlet end; 313. Overlap portion; 313a. First connecting hole; 3131. Connecting section; 3131a. Connecting end; 3133. Extending section; 3135. Overlap section; 3135a. Overlap end; 315. Second connecting portion; 3151. Hanging groove; 3151a. First groove section; 3151b. Second groove section; 3151c. Second guide surface; 317. Third connecting hole; 319. Connecting bracket; 3191. Main body; 3193. Connecting foot; 50. Smoke hood.

[0059] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0060] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0061] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0062] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0064] A range hood is a kitchen appliance used to purify the kitchen environment. It is used to extract cooking waste gases such as oil smoke and water vapor generated by cooking and discharge the waste gases to the outside.

[0065] A range hood usually includes a fan cover and a fan. The fan is mostly fixedly installed in the fan cover. During use, the fan motor drives the fan wheel to rotate to suck indoor cooking exhaust gas into the range hood.

[0066] In the related art, when assembling the range hood, workers are required to pre-position the connection between the fan and the fan cover. However, due to the heavy weight of the fan, it is inconvenient to operate during the pre-positioning alignment process, and it is impossible to achieve good and precise alignment, which affects the assembly efficiency of the workshop. For example, in the actual assembly process, due to the heavy weight of the fan, at least two workers are generally required to fix the fan in the fan cover in the assembly workshop, that is, one person first moves the fan to the inside of the fan cover, and aligns the connection between the fan and the fan cover, and then another person fixes the fan and the fan cover. In this way, at least two workers are required to complete the complete assembly process, and the assembly operation is relatively inconvenient, which affects the assembly efficiency of the workshop.

[0067] To solve the above problems, please refer to Figures 1 to 3 In one aspect, the present application provides a range hood 100. In the embodiment of the present application, the range hood 100 includes a fan cover 10, a fan 30, and a fume collecting hood 50. The fan 30 is installed in the fan cover 10, and the fume collecting hood 50 is connected below the fan cover 10. Driven by the fan 30, cooking waste gas such as oil smoke and water vapor generated in the kitchen can be sucked into the fume collecting hood 50, and then guided by the volute 31 of the fan 30, and then flows to the outside after passing through the fan cover 10, so as to discharge the oil smoke to the outside.

[0068] The fan cover 10 can realize the installation of the fan 30, and a smoke exhaust duct is constructed between the fan cover 10 and the smoke collecting hood 50. The smoke collecting hood 50 will be provided with a smoke inlet connected to the smoke exhaust duct, and the fan cover 10 will be provided with a smoke exhaust outlet connected to the smoke exhaust duct. During use, when the smoke exhaust function of the range hood 100 is turned on, under the drive of the fan 30, cooking waste gas such as oil smoke and water vapor will be sucked in through the smoke exhaust outlet by the fan 30, and then the volute 31 of the fan 30 will transfer the cooking waste gas to the smoke exhaust outlet of the fan cover 10, and then be discharged to the outside through the smoke exhaust outlet.

[0069] See also Figures 4 to 6 The fan cover 10 may include a top plate 11, a surrounding plate 13 and a cover plate 15. The top plate 11 covers the top opening of the surrounding plate 13, and the smoke exhaust port connected to the smoke exhaust duct may be opened on the top plate 11, so that the cooking exhaust gas can be discharged from the bottom to the outside through the smoke exhaust port of the top plate 11. The connection method between the top plate 11 and the surrounding plate 13 may be welding, riveting, threaded connection or snap connection, etc., which is not limited in this application. The top plate 11 and the surrounding plate 13 cooperate to form a accommodating chamber 10a for accommodating the fan 30. The surrounding plate 13 may be formed with an opening 13a connected to the accommodating chamber 10a. The cover plate 15 may cover the opening 13a and be fixedly connected to the surrounding plate 13 and the fan 30 respectively. Among them, when the opening 13a is formed at the rear of the enclosure 13, that is, the cover 15 is closer to the installation wall than the user, thus, when the cover 15 is connected to the fan 30, and when the cover 15 is connected to the installation wall, the connection structure (such as the connection hole) on the plate surface of the cover 15 will not be exposed to the user's line of sight. Therefore, there is no connection structure for connecting the fan 30 on the outer wall of the enclosure 13, and the cover 15 provided with the connection structure for connecting the fan 30 will not be exposed to the user's line of sight. There is no need to additionally set up a decorative cover to shield the fan cover 10, thereby reducing the number of structures of the range hood 100, reducing the cost required for the decorative cover, and at the same time, reducing the assembly steps of the decorative cover, improving the assembly efficiency of the workshop, and facilitating assembly. Of course, the opening 13a can also be opened in front of the enclosure 13, so that when the fan 30 needs maintenance, the staff can directly remove the cover 15 in front of the enclosure 13 and perform maintenance operations on the fan 30 without removing the range hood 100 from the installation wall.

[0070] The fan 30 may include a volute 31, a wind wheel and a fan 30. The volute 31 may be fixedly connected to the top plate 11, the enclosure 13 and the cover plate 15 respectively, the wind wheel is installed in the volute 31 and is in driving connection with the fan 30, the volute 31 has an outlet end 311a, and the outlet of the volute 31 is opened at the end surface of the outlet end 311a of the volute 31. During operation, the fan 30 starts to run and drives the wind wheel to rotate at a high speed, the cooking waste gas will enter the inside of the volute 31 from the inlet of the volute 31, and then along the direction of rotation of the wind wheel, the cooking waste gas will be blown out through the outlet of the volute 31, and then discharged to the outside through the smoke exhaust port of the top plate 11 of the fan cover 10.

[0071] The volute 31 may include a shell body 311 and a lap joint 313, a second connection part 315 and a connecting bracket 319 arranged on the shell body 311. Accordingly, the top plate 11 has a first connection part 111, and the bottom of the enclosure 13 has a clamping part 131. Among them, the lap joint 313 is clamped with the clamping part 131, and the clamping part 131 can be in the form of a clamping step or a clamping groove, etc., which is not limited. The first connection part 111 is connected in a coordinated manner with the second connection part 315. The lap joint 313 and the second connection part 315 can be in a form of being made into one piece with the shell body 311, that is, the three can be processed and manufactured in an integrated manner to reduce the assembly steps. Of course, the lap joint 313 and the second connection part 315 can also be in a form of being made into a separate body with the shell body 311, which is convenient for maintenance and replacement to extend the service life of the volute 31. In addition, the shell body 311 can be connected in a coordinated manner with the cover plate 15 through the connecting bracket 319.

[0072] On the basis of providing a lap joint 313 and a second connecting portion 315 on the shell body 311, in order to improve the fixing effect of the shell body 311 of the volute 31, the present application arranges the lap joint 313 and the second connecting portion 315 to be located on opposite sides of the shell body 311 along its length direction, so that in the length direction of the shell body 311, the first connecting portion 111 of the top plate 11 and the clamping portion 131 at the bottom of the surrounding plate 13 can cooperate to improve the supporting effect of the shell body 311 of the volute 31.

[0073] The lap part 313 is provided with a first connection hole 313a, and the clamping part 131 is provided with a second connection hole 131a. The lap part 313 and the clamping part 131 are fixedly connected by a first fastener (not shown) in cooperation with the first connection hole 313a and the second connection hole 131a. The first fastener may be a threaded member, and correspondingly, the first connection hole 313a and the second connection hole 131a may both be threaded holes. The first fastener is used to sequentially penetrate the first connection hole 313a and the second connection hole 131a, and the threaded connection is achieved at the same time, so as to achieve a fixed connection between the lap part 313 and the clamping part 131. Of course, the cooperation connection between the first fastener and the first connection hole 313a and the second connection hole 131a may also be in the form of a pin connection, which is not limited thereto. In this way, based on the overlap of the overlapping portion 313 on the holding portion 131, the connection stability between the overlapping portion 313 and the holding portion 131 can be further improved, thereby improving the stability of the fan 30 when running in the accommodating chamber 10a, making it less likely to shake and remain stable.

[0074] The outlet end 311a of the shell body 311 is provided with a third connection hole 317, and the top plate 11 is provided with a fourth connection hole 115. The shell body 311 and the top plate 11 are fixedly connected by a second fastener (not shown) in cooperation with the third connection hole 317 and the fourth connection hole 115. The second fastener may be a threaded member, and accordingly, the third connection hole 317 and the fourth connection hole 115 may both be threaded holes. The third connection hole 317 and the fourth connection hole 115 are sequentially pierced by the second fastener, and threaded connection is achieved at the same time, so as to achieve a fixed connection between the outlet end 311a of the shell body 311 and the top plate 11. Of course, the cooperation and connection between the second fastener and the third connection hole 317 and the fourth connection hole 115 may also be in the form of a pin connection, which is not limited thereto.

[0075] In the exemplary solution shown in the figure, the present application sets the number of the fourth connection holes 115 to be multiple, and the multiple fourth connection holes 115 are arranged at intervals along the circumference of the top plate 11, for example, 2, 3 or 4, etc., and the number of the third connection holes 317 and the second fasteners corresponds to the number of the fourth connection holes 115. In this way, the connection strength between the shell body 311 and the top plate 11 can be further improved, and the stability of the fan 30 when it is accommodated in the accommodating cavity 10a can be improved.

[0076] The smoke hood 50 may be installed at the bottom of the enclosure 13 of the fan hood 10 to collect the cooking waste gas generated by the cooker. In addition to the smoke collection function, the smoke hood 50 may also have panel control, lighting, wind curtain and other functions, that is, the smoke hood 50 may be integrated with a control module, a light module and a wind curtain module. In addition, a guide plate assembly may be provided in the smoke hood 50, and the cooking waste gas can be more quickly sucked into the entrance of the shell body 311 of the volute 31 through the guidance of the guide plate assembly. In the actual installation process, the smoke hood 50 may be connected to the bottom of the enclosure 13 of the fan hood 10 by threaded connection, riveting or snap connection, etc., and this application does not limit this.

[0077] In the actual assembly process, the staff can first overlap the overlap portion 313 on the clamping portion 131, and then match and connect the second connection portion 315 with the first connection portion 111 to fix the shell body 311 of the volute 31 to the fan cover 10, realize the pre-fixation of the two, and then perform the subsequent final fixed connection. In this assembly process, the complete assembly process can be completed by one staff member, without the need to add additional staff, saving labor costs.

[0078] In this way, by clamping the overlapping portion 313 with the holding portion 131 and then cooperating with the second connecting portion 315 and the first connecting portion 111, compared with the case where the fan 30 is only connected to the top plate 11 of the fan cover 10, the stability of the connection between the fan 30 and the fan cover 10 can be improved, so that the fan 30 remains stable during operation and does not shake easily. In addition, during the assembly process, the fan 30 and the fan cover 10 can be pre-fixed and installed by the cooperation of the overlapping portion 313 and the holding portion 131, as well as the cooperation of the second connecting portion 315 and the first connecting portion 111, which is convenient for the staff to carry out the subsequent final fixation, easy to operate, and the assembly efficiency can be effectively improved.

[0079] In one embodiment, please refer to Figures 6 to 8 The lap joint 313 includes a connecting section 3131, an extension section 3133 and a lap joint section 3135 which are connected in sequence. One end of the connecting section 3131 away from the extension section 3133 is formed as a connecting end 3131a connected to the shell body 311, and one end of the lap joint section 3135 away from the extension section 3133 is formed as a lap joint end 3135a away from the shell body 311, and the lap joint end 3135a is clamped to the clamping portion 131.

[0080] Please refer to Figure 10 to Figure 11The surface of the clamping portion 131 is provided with an avoidance hole 1311a for the overlapping end 3135a to pass through. For example, when the clamping portion 131 is a clamping step, the step surface 1311 of the clamping step facing the connection end 3131a can be provided with the avoidance hole 1311a corresponding to the overlapping end 3135a. In the process of clamping the overlapping portion 313 and the clamping portion 131, it is inevitable that the overlapping portion 313 is too long and the overlapping portion 313 and the surface of the clamping portion 131 interfere with each other, resulting in the overlapping portion 313 being unable to be stably clamped to the clamping portion 131. Therefore, by providing an avoidance hole 1311a for the lap end 3135a to pass through, when the lap portion 313 is too long, it can be passed through the avoidance hole 1311a to avoid interference with the surface of the clamping portion 131, so that the lap portion 313 can be stably clamped on the clamping portion 131, thereby improving the stability of the shell body 311 of the volute 31 and the enclosure 13 during pre-installation.

[0081] Furthermore, the width of the lap end 3135a gradually decreases in the direction from the connection end 3131a to the clamping portion 131. In this way, when the opening size of the avoidance hole 1311a is unique, when the width of the lap end 3135a gradually decreases, the avoidance hole 1311a formed by the clamping portion 131 can be adapted to the lap ends 3135a of the lap portions 313 of more sizes, and the versatility is better.

[0082] In the actual assembly process, it is necessary to avoid interference between the shell body 311 of the volute 31 and the clamping portion 131. Therefore, the present application sets the connection section 3131 and the overlap section 3135 to have an angle with the extension section 3133, and the extension section 3133 extends in the direction from the connection section 3131 to the overlap section 3135, so that there is a height difference between the connection section 3131 and the overlap section 3135. In this way, the shell body 311 connected to the connection end 3131a of the connection section 3131 through the overlap section 313 can avoid the clamping portion 131 through the extension section 3133, so that it can be more convenient for the staff to assemble, the operation is convenient, and the assembly efficiency is high.

[0083] In one embodiment, please refer to Figure 7 and Fig. 9The first connection part 111 is a hanging groove 3151 formed on the end face of the outlet end 311a of the shell body 311, and the second connection part 315 is a hook 113 set on the top plate 11, and the hook 113 is hung in the hanging groove 3151. After the overlap part 313 and the clamping part 131 are engaged, the staff can continue to lift the shell body 311 of the volute 31 until the hook 113 is engaged in the hanging groove 3151. At this time, the shell body 311 of the volute 31 will be relatively fixed with the top plate 11, and the positions of the third connection hole 317 and the fourth connection hole 115 can be roughly aligned, so that the second fastener can cooperate and fix the third connection hole 317 and the fourth connection hole 115. In this way, it is convenient for the staff to assemble, and in the actual operation process, one staff member can achieve quick and accurate assembly.

[0084] In the scheme exemplarily shown in the figure, the present application sets the number of hooks 113 to be multiple, and the multiple hooks 113 are arranged at intervals along the circumference of the top plate 11, and the number of hanging grooves 3151 corresponds to the number of hooks 113. In this way, through the one-to-one matching of the multiple hooks 113 and the multiple hanging grooves 3151, the stability of the connection between the shell body 311 of the volute 31 and the top plate 11 is further improved, and the accuracy of the position alignment of the shell body 311 and the top plate 11 after pre-installation can be further improved. Among them, the number of hooks 113 can be 2, 3, 4 or 5, etc., and the present application does not limit this.

[0085] In order to improve the overall hanging stability of the hook 113 on the shell body 311 of the volute 31, the present application locates the hanging groove 3151 in the middle of the end surface of the outlet end 311a. In this way, when the hook 113 is hung with the hanging groove 3151, the supporting force of the hook 113 on the shell body 311 is located in the middle of the shell body 311, so that the supporting force will provide more uniform and stable support to the shell body 311 as a whole. Of course, the hanging groove 3151 can also be set at the upper or lower part of the end surface of the outlet end 311a of the shell body 311, and the present application does not limit this.

[0086] In one structural form, please refer to Figure 12 to Figure 13 The hook 113 includes a connecting edge 1131 and a hook body 1133. The connecting edge 1131 is connected to the top plate 11, and the hook body 1133 is hooked to the hanging groove 3151. The hook body 1133 includes a hook section 1133a and a folding edge section 1133b. The hook section 1133a is connected between the connecting edge 1131 and the folding edge section 1133b. During the hooking and insertion process, the hook section 1133a and the folding edge section 1133b will pass through the hanging groove 3151, and by abutting against the side wall of the hanging groove 3151, the hanging of the hanging groove 3151 is realized.

[0087] There is an angle between the folding section 1133b and the hook section 1133a, and the folding section 1133b and the hook section 1133a are used to stop the surface of the shell body 311 adjacent to the hanging groove 3151 together. In this way, on the basis of the hook section 1133a, by adding the folding section 1133b having an angle with the hook section 1133a, and by using the hook section 1133a and the folding section 1133b to stop the surface of the shell body 311 together, the wrapping property of the hanging groove 3151 is better, and when stopping, the hook section 1133a and the folding section 1133b have a larger contact area with the surface of the shell body 311, and the stopping effect is better. Here, the specific angle between the folding section 1133b and the hook section 1133a is not limited, and the angle between the folding section 1133b and the hook section 1133a can be selected according to the actual stopping effect required.

[0088] The hook body 1133 of the hook 113 has an insertion end 113a, and at least a portion of the end surface of the insertion end 113a is formed with a first guide surface 113b, and the first guide surface 113b is used for guiding and matching with the side wall of the hanging groove 3151. During the matching process between the hook 113 and the hanging groove 3151, the insertion end 113a of the hook 113 will come into contact with the side wall of the hanging groove 3151, and in order to make it easier for the staff to achieve the connection between the two, the first guide surface 113b is formed at least a portion of the end surface of the insertion end 113a, and through the guiding and matching of the first guide surface 113b with the side wall of the hanging groove 3151, the hook 113 can be more smoothly and accurately hooked into the hanging groove 3151. Among them, the present application can form the entire end surface of the insertion end 113a as the first guide surface 113b, or can form part of the end surface of the insertion end 113a as the first guide surface 113b. The present application does not limit this and can be selected according to actual guiding needs.

[0089] After the hook 113 is connected to the hanging groove 3151, in order to prevent the hook 113 from shaking with the hanging groove 3151, please refer to Fig. 9The hanging groove 3151 of the present application includes a first groove section 3151a and a second groove section 3151b that are connected. When the hook 113 is hung in the hanging groove 3151, the hook 113 moves from the first groove section 3151a to the second groove section 3151b, wherein in the hanging direction of the hook 113, the cross-sectional area of ​​the second groove section 3151b is gradually reduced. During the hanging process, in order to facilitate the hook 113 to enter the first slot section 3151a of the hanging groove 3151, the cross-sectional area of ​​the first slot section 3151a is generally set to be larger, so that the hook body 1133 of the hook 113 can enter the hanging groove 3151. When the hook body 1133 of the hook 113 moves from the first slot section 3151a to the second slot section 3151b, in order to maintain stability between the hook 113 and the hanging groove 3151, the cross-sectional area of ​​the second slot section 3151b is gradually reduced, so that the space margin for the hook body 1133 of the hook 113 to shake is reduced by reducing the second slot section 3151b, so that after the hook 113 is hung on the hanging groove 3151, the fan 30 can be more stably accommodated in the accommodating cavity 10a.

[0090] The second guide surface 3151c is formed on the groove wall of the second groove section 3151b of the hanging groove 3151. The second guide surface 3151c is used to guide and cooperate with the hook body 1133 of the hook 113 when the hook body 1133 of the hook 113 is hung in the second groove section 3151b of the hanging groove 3151. When the hook body 1133 of the hook 113 moves into the second groove section 3151b, the hook body 1133 of the hook 113 can move more smoothly into the second groove section 3151b of the hanging groove 3151 by providing the second guide surface 3151c and under the guidance of the second guide surface 3151c, the smoothness of the hanging is improved.

[0091] The above content introduces the advantages of the range hood 100 of the present application, which has the advantages of stable connection and convenient assembly, from the connection form of the volute 31 of the fan 30 and the top plate 11 and the enclosure 13 of the fan cover 10. On this basis, please refer to Figure 6In order to improve the connection stability between the connection bracket 319 and the cover plate 15 and the shell body 311 of the volute 31, the connection bracket 319 includes a main body 3191 and two connection feet 3193 respectively connected to opposite sides of the main body 3191. The main body 3191 is fixedly connected to the cover plate 15, and each connection foot 3193 is fixedly connected to the shell body 311, so that the cover plate 15 is fixedly connected to the shell body 311. In this way, the contact area between the shell body 311 and the connection bracket 319 can be increased by setting the two connection feet 3193, so that the connection stability between the shell body 311 and the connection bracket 319 can be improved. Furthermore, the contact form between the main body 3191 and the cover plate 15 can be surface contact, and the contact form between each connecting foot 3193 and the shell body 311 can also be surface contact, so as to further increase the contact area between the shell body 311 of the connecting bracket 319 and the volute 31 and the cover plate 15 through the surface contact, thereby further improving the connection stability between the connecting bracket 319 and the volute 31 and the cover plate 15.

[0092] In the scheme exemplarily shown in the figure, the present application sets the number of connecting brackets 319 to be multiple, and the multiple connecting brackets 319 are arranged at intervals along the circumference of the shell body 311 of the volute 31. Thus, the connection stability between the shell body 311 of the volute 31 and the cover plate 15 can be improved by increasing the number of connecting brackets 319. The number of connecting brackets 319 can be 2, 3, 4 or 5, etc., and this is not limited.

[0093] In order to improve the connection strength between the main body 3191 of the connecting bracket 319 and the connecting foot 3193, please continue to refer to Figure 6 , the present application also forms a reinforcement groove in the concave border edge between the main body 3191 and the connecting bracket 319. In this way, by setting the reinforcement groove, the connection strength between the main body 3191 and the connecting leg 3193 can be improved, thereby making the connection stability between the cover plate 15 and the shell body 311 of the volute 31 better through the connecting bracket 319. Among them, the number of reinforcement grooves can be multiple, and the multiple reinforcement grooves are arranged at intervals along the extension direction of the border edge to further improve the connection strength between the main body 3191 and the connecting leg 3193, for example, it can be 2, 3, 4 or 5, etc., which is not limited to this.

[0094] During the operation of the range hood 100, the motor of the fan 30 will generate large vibrations when running, and the cover plate 15 connected to the shell body 311 of the volute 31 of the fan 30, the vibrations generated by the motor will naturally be transmitted to the cover plate 15, causing the cover plate 15 to vibrate excessively, and also generate certain noises, affecting the user experience.

[0095] In this regard, the present application further configures the cover plate 15 to include a plate body 151 and a profiled portion 153. The plate body 151 is covered on the opening 13a and fixedly connected to the shell body 311. The profiled portion 153 is arranged on the surface of the plate body 151 away from the shell body 311 and is raised in the direction away from the shell body 311. In actual use, when the vibration generated by the motor of the fan 30 is transmitted to the plate body 151 of the cover plate 15, it will be absorbed by the raised profiled portion 153, so that the vibration can be slowed down, and a certain amount of noise is reduced, thereby improving the user's experience. At the same time, the raised profiled portion 153 can also play a role in increasing the strength of the plate body 151, so that the overall strength of the cover plate 15 is further improved. Among them, the cross-sectional shape of the profiled portion 153 can be circular, rectangular, triangular or irregular, which is not limited to this. The number and shape of the profiled portion 153 can be selected according to the actual vibration reduction requirements.

[0096] Based on the above content, the present application further proposes an assembly method of the range hood 100, please refer to Fig.14 The assembling method of the range hood 100 comprises the following steps:

[0097] Step S10: Connect the top plate 11 and the enclosure 13. The top plate 11 and the enclosure 13 cooperate to form a receiving cavity 10a. The top plate 11 is covered on the top opening of the enclosure 13, and the connection between the two is achieved by threaded connection, riveting or snap connection.

[0098] Step S20: Load the fan 30 into the accommodating chamber 10a. In this step, the staff can push the fan 30 into the accommodating chamber 10a through the bottom opening of the enclosure 13, or can put the fan 30 into the accommodating chamber 10a through the opening 13a of the enclosure 13, which is not limited.

[0099] Step S30: The overlapped portion 313 of the shell body 311 of the volute 31 is clamped on the clamping portion 131 of the enclosure 13, and the second connecting portion 315 of the shell body 311 is connected to the first connecting portion 111 of the top plate 11, so as to realize the pre-positioning installation of the shell body 311 and the fan cover 10. In this step, the part of the shell body 311 of the volute 31 provided with the overlapped portion 313 can be lifted first, and then the overlapped portion 313 is clamped on the clamping portion 131 of the enclosure 13. Then, the part of the shell body 311 provided with the second connecting portion 315 is lifted, so that the second connecting portion 315 is matched and connected with the first connecting portion 111, for example, the hook 113 is hung on the hanging groove 3151. At this time, the shell body 311 and the fan cover 10 are pre-positioned and installed, and the final connection position between the two will also be relatively fixed.

[0100] Step S40: The overlapping portion 313 is fixedly connected to the holding portion 131, and the shell body 311 is fixedly connected to the top plate 11. In this step, after the pre-positioning installation is completed, the first connection hole 313a of the overlapping portion 313 and the second connection hole 131a of the holding portion 131 can be fixedly connected by a first fastener, and the third connection hole 317 of the shell body 311 and the fourth connection hole 115 of the top plate 11 can be fixedly connected by a second fastener. The order of fixing the overlapping portion 313 and the holding portion 131 and fixing the shell body 311 and the top plate 11 can be interchanged, and there is no limitation on this.

[0101] Step S50: Cover the cover plate 15 of the fan cover 10 on the opening 13a behind the enclosure 13, and fix the cover plate 15 to the shell body 311. At this time, after the shell body 311 realizes the fixed connection between the top plate 11 and the enclosure 13, the staff can cover the cover plate 15 on the opening 13a behind the enclosure 13, and then fix the cover plate 15 to the shell body 311 to realize the connection between the fan 30 and the fan cover 10.

[0102] Step S60: The enclosure 13 is fixedly connected to the fume hood 50 of the range hood 100, so as to realize the fixed connection between the fan cover 10 and the fume hood 50. In this step, the fan cover 10 and the fume hood 50 are connected by the fixed connection between the enclosure 13 and the fume hood 50, and the range hood 100 is assembled. The connection between the enclosure 13 and the fume hood 50 can be threaded or riveted, etc., which is not limited thereto.

[0103] In this way, by clamping the overlapping portion 313 with the clamping portion 131 and then cooperating with the second connecting portion 315 with the first connecting portion 111, the pre-positioning installation of the volute 31, the enclosure 13 and the top plate 11 can be achieved. At this time, the final connection position of the shell body 311 of the volute 31 with the enclosure 13 and the top plate 11 can also be positioned and aligned, so that the staff can then carry out the final installation of the volute 31, the enclosure 13 and the top plate 11, with accurate positioning and convenient operation. At the same time, in the actual assembly process, the complete assembly process can be completed by one staff member, which can also reduce labor costs.

[0104] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0105] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A range hood, characterized in that: include: A fan cover, comprising a top plate and a surrounding plate, wherein the top plate covers the top opening of the surrounding plate and cooperates with the surrounding plate to form a receiving cavity, the top plate has a first connecting portion, and the bottom of the surrounding plate has a clamping portion; and A fan is accommodated in the accommodating cavity, and the fan includes a volute, and the volute includes a shell body and a lap joint and a second connecting portion arranged on the shell body, wherein the lap joint is engaged with the clamping portion, and the first connecting portion is engaged with the second connecting portion to fix the shell body to the fan cover.

2. The range hood according to claim 1, characterized in that: The overlapping portion includes a connection end connected to the shell body and an overlapping end away from the shell body, and the overlapping end is clamped to the clamping portion; The surface of the clamping portion is provided with an avoidance hole for the overlapping end to pass through.

3. The range hood according to claim 2, characterized in that: In a direction from the connecting end to the clamping portion, the width of the overlapping end gradually decreases.

4. The range hood according to claim 2, characterized in that: The overlapping portion comprises a connecting section, an extending section and an overlapping section which are connected in sequence, an end of the connecting section away from the extending section is formed as the connecting end, and an end of the overlapping section away from the extending section is formed as the overlapping end; The connecting section and the overlapping section respectively form an angle with the extending section, and the extending section extends in a direction from the connecting section to the overlapping section, so that the connecting section and the overlapping section have a height difference.

5. The range hood according to claim 1, characterized in that: The overlapping portion is provided with a first connecting hole, the clamping portion is provided with a second connecting hole, and the overlapping portion and the clamping portion are fixedly connected by a first fastener in cooperation with the first connecting hole and the second connecting hole.

6. The range hood according to any one of claims 1 to 5, characterized in that: The first connection part is a hanging groove formed on the end surface of the outlet end of the shell body, and the second connection part is a hook arranged on the top plate, and the hook is hung on the hanging groove.

7. The range hood according to claim 6, characterized in that: The hook comprises a connecting edge and a hook body, the connecting edge is connected to the top plate, and the hook body is hung in the hanging groove; The hook body comprises a hook section and a folding edge section, wherein the hook section is connected between the connecting edge and the folding edge section; There is an angle between the folded edge section and the hook section, and the folded edge section and the hook section are used to jointly stop the surface of the shell body adjacent to the hanging groove.

8. The range hood according to claim 6, characterized in that: The hook has an insertion end, and at least a portion of an end surface of the insertion end is formed with a first guide surface, and the first guide surface is used for guiding and matching with a groove side wall of the hanging groove.

9. The range hood according to claim 6, characterized in that: The hanging groove comprises a first groove section and a second groove section which are connected to each other. When the hook is hung in the hanging groove, the hook moves from the first groove section to the second groove section. Wherein, in the hooking direction of the hook, the cross-sectional area of ​​the second groove section is gradually reduced.

10. The range hood according to claim 6, characterized in that: A second guide surface is formed on the wall surface of the hanging groove, and the second guide surface is used for guiding and cooperating with the hook when the hook is hung in the hanging groove.

11. The range hood according to claim 6, characterized in that: The number of the hooks is multiple, and the multiple hooks are arranged at intervals along the circumference of the top plate, and the number of the hanging grooves corresponds to the number of the hooks; And / or, the hanging groove is located in the middle of the end surface of the outlet end.

12. The range hood according to claim 6, characterized in that: The outlet end surface of the shell body is provided with a third connecting hole, the top plate is provided with a fourth connecting hole, and the shell body and the top plate are fixedly connected by a second fastener in cooperation with the third connecting hole and the fourth connecting hole.

13. The range hood according to claim 1, characterized in that: The overlapping portion and the second connecting portion are located at two opposite sides of the shell body along the length direction thereof.

14. The range hood according to claim 1, characterized in that: The fan cover also includes a cover plate, and an opening communicating with the accommodating cavity is formed at the rear of the cover plate; The cover plate is arranged on the opening and is fixedly connected to the shell body.

15. The range hood according to claim 14, characterized in that: The cover plate includes a plate body and a profiled portion, wherein the plate body is disposed on the opening and is fixedly connected to the shell body; The pressed portion is disposed on a surface of the plate body facing away from the shell body, and is raised in a direction facing away from the shell body.

16. The range hood according to claim 14, characterized in that: The volute further comprises a connecting bracket, wherein the connecting bracket comprises a main body and two connecting legs respectively connected to opposite sides of the main body; The main body is fixedly connected to the cover plate, and each of the connecting legs is fixedly connected to the shell body, so that the cover plate is fixedly connected to the shell body.

17. A method for assembling a range hood, characterized in that: The following steps are involved: Connecting the top plate to the enclosure plate, wherein the top plate and the enclosure plate cooperate to form a receiving cavity; Install the fan into the accommodating cavity; The overlapping part of the shell body of the volute is clamped on the clamping part of the enclosure, and the second connecting part of the shell body is connected to the first connecting part of the top plate, so as to realize the pre-positioning installation of the shell body and the fan cover; The overlapping portion is fixedly connected to the clamping portion, and the shell body is fixedly connected to the top plate; The cover plate of the fan cover is placed on the opening behind the enclosure, and the cover plate is fixedly connected to the shell body; The enclosure is fixedly connected to the smoke collecting hood of the range hood to achieve a fixed connection between the fan cover and the smoke collecting hood.

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