Shell assembly and range hood

Abstract

The invention discloses a shell assembly and a range hood. The shell assembly provided by the invention comprises a main shell, a sensor unit, a protective shell and a protective sleeve, the sensor unit is mounted on the protective shell, a first through hole for exposing a part of structure of the sensor unit is formed in the protective shell, the first through hole is arranged towards the main shell, and the protective shell is connected to the main shell; the protective sleeve is arranged on the outer side of at least part of the structure of the protective shell in a sleeving mode and connected to the main shell in a pressing mode. Through the arrangement of the protective sleeve in the shell assembly, oil liquid and the like can be prevented from flowing to the sensor unit to a certain extent.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a shell assembly and a range hood using the shell assembly. Background Art

[0002] At present, a sensor for detecting the smell of total volatile organic compounds (TVOC) is installed in a range hood, which is mainly used to monitor harmful gases and odors generated during the cooking process.

[0003] In the related art, a sensor module is usually bonded to the inner side of the side panel of the range hood, wherein the sensor module includes a shell and a sensor installed in the inner cavity of the shell. In order to enable the sensor to detect harmful gases and odors, a hole structure is provided on the shell for exposing the detection part of the sensor.

[0004] However, in the above-mentioned range hood, when the oil flows on the inner side of the side panel along the extension direction of the side panel, it will flow to the surface of the sensor through the connecting gap formed between the outer shell and the side panel. In this way, oil stains will adhere to the surface of the sensor, thereby affecting the detection precision and accuracy of the sensor. Summary of the invention

[0005] The main purpose of the present application is to provide a shell assembly and a range hood, which can prevent oil and the like from flowing to the surface of the sensor unit to a certain extent, so that the sensor unit has higher detection precision and accuracy.

[0006] On the one hand, the present application provides a shell assembly for a range hood, the shell assembly comprising a main shell, a sensor unit, a protective shell and a protective sleeve; the sensor unit is installed on the protective shell, a first through hole is formed on the protective shell for exposing a portion of the structure of the sensor unit, the first through hole is arranged toward the main shell, and the protective shell is connected to the main shell; the protective sleeve is arranged on the outside of at least a portion of the structure of the protective shell, and the protective sleeve is crimped to the main shell.

[0007] As an optional embodiment, the main shell includes a top shell and a bottom shell connected together, the bottom shell includes a back plate and a first side plate and a second side plate connected on opposite sides of the back plate; the protective shell is connected to a side of the first side plate facing the second side plate, and the first through hole is arranged toward the first side plate.

[0008] As an optional embodiment, the protective shell includes a first shell portion and a second shell portion that are snapped together, and the first shell portion and the second shell portion are detachably connected; the sensor unit is installed on the first shell portion; part of the structure of the protective cover is clamped between the first shell portion and the second shell portion; the second shell portion is connected to the main shell body, and a first through hole is formed on the second shell portion.

[0009] As an optional embodiment, the protective sleeve includes a main body, a first sealing part and a second sealing part; the main body is sleeved on the outside of the protective shell; the first sealing part is connected to the inner side of the main body and clamped between the first shell and the second shell; the second sealing part is connected to the side of the main body facing the first side plate, and the second sealing part is crimped to the first side plate.

[0010] As an optional implementation, the first sealing portion and the second sealing portion both extend along the circumference of the protective shell.

[0011] As an optional embodiment, the second sealing portion includes multiple sealing lips, which correspond one-to-one to the multiple edges of the main body, and an opening is formed between two adjacent sealing lips; one end of the sealing lip is connected to the corresponding edge, and the other end is crimped to the first side panel.

[0012] As an optional implementation, the other end of the sealing lip is turned outward compared to one end of the sealing lip.

[0013] As an optional embodiment, the sensor unit includes a circuit board and a detection element arranged on the circuit board; the circuit board is installed on the first shell part, and the detection element is exposed through the first through hole; a sleeve portion is formed on the first sealing part and is sleeved on the outside of the detection element, and the inner hole of the sleeve portion is formed as a second through hole arranged opposite to the first through hole.

[0014] As an optional implementation, the protective shell is detachably connected to the first side panel.

[0015] As an optional implementation, the protective shell is connected to the first side plate by a snap-fitting member.

[0016] As an optional embodiment, the snap-fitting part includes a main body and a snap-fitting part; the main body is arranged on the side of the first side plate away from the second side plate, and a third through hole is formed on the first side plate for the snap-fitting part to pass through; a snap-fitting hole is formed on the snap-fitting part, and a snap-fitting protrusion is formed on the protective shell, and the snap-fitting protrusion is snap-fitted and connected with the snap-fitting hole to snap-fit ​​the protective shell and the first side plate.

[0017] As an optional implementation, one end of the buckle portion away from the main body portion extends toward a side close to the locking protrusion.

[0018] As an optional implementation, a plurality of detection holes distributed at intervals are opened on the main body, and the plurality of detection holes are arranged in an array.

[0019] As an optional implementation, two buckle parts are provided, and the two buckle parts are axially symmetrically arranged with respect to the central axis of the main body.

[0020] As an optional implementation, a groove is formed on the buckle portion, the groove has a side wall arranged opposite to the main body, and the side wall abuts against a side of the first side plate facing the second side plate.

[0021] As an optional implementation, two guiding protrusions are provided on the protective shell; the locking protrusion is located between the two guiding protrusions, and the opposite sides of the buckle part are respectively abutted against the two guiding protrusions.

[0022] As an optional implementation, a positioning structure is provided between the protective shell and the first side plate, and the positioning structure is used to limit the relative position between the protective shell and the first side plate.

[0023] As an optional embodiment, the positioning structure includes a positioning protrusion and a positioning notch, the positioning protrusion is arranged on the protective shell, and the positioning notch is formed on the hole wall of the third through hole; wherein, the positioning protrusion is located in the positioning notch, and the positioning protrusion and the inner wall of the positioning notch are surrounded to form an avoidance hole for the buckle part to pass through.

[0024] As an optional embodiment, a limiting groove is formed on the first side plate, and a third through hole is formed on the bottom wall of the limiting groove; wherein the main body is located in the limiting groove, and the end face of the main body facing away from the buckle part is located in the same plane as the plate surface of the first side plate.

[0025] As an optional implementation, the protective sleeve is an elastic member.

[0026] On the other hand, the present application provides a range hood comprising the above-mentioned shell assembly.

[0027] In the shell assembly and the range hood in the embodiment of the present application, the shell assembly includes a protective sleeve, which is arranged on the outside of at least a portion of the structure of the protective shell, and the protective sleeve is crimped to the main shell.

[0028] In this way, when oil flows down the side plate, the protective sleeve and the main housing have a strong sealing performance due to the cooperation between the protective sleeve and the main housing, which can prevent the oil from flowing from between the protective sleeve and the main housing to the protective shell to a certain extent, and further prevent the oil from flowing to the surface of the sensor unit through the first through hole to a certain extent, thereby preventing the oil from adhering to the surface of the sensor unit to a certain extent. Compared with the solutions in the related art, the sensor unit in the embodiment of the present application has a stronger perception ability of the external environment, thereby making the detection precision and accuracy of the sensor unit higher;

[0029] In addition, when the protective sleeve is installed on at least part of the structure of the protective shell, the oil flowing onto the protective shell will flow onto the protective sleeve. If the protective shell has a connecting gap due to its own structural design, the oil can be prevented from penetrating into the surface of the sensor unit through the connecting gap to a certain extent, thereby further improving the detection precision and detection accuracy of the sensor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of a housing assembly provided in an embodiment of the present application;

[0032] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure from another perspective;

[0033] Figure 3 for Figure 2 A schematic diagram of the enlarged local structure at point A in the middle;

[0034] Figure 4 An exploded view of a sensor module in a housing assembly provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the planar structure of a sensor module in a housing assembly provided in an embodiment of the present application;

[0036] Figure 6 for Figure 5 Cross-sectional view along direction BB;

[0037] Figure 7 A schematic diagram of the three-dimensional structure of a protective sleeve in a housing assembly provided in an embodiment of the present application;

[0038] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure from another perspective;

[0039] Fig. 9 A schematic diagram of the exploded structure of a housing assembly provided in an embodiment of the present application;

[0040] Fig.10 for Fig. 9 A magnified schematic diagram of the local structure at C in the middle;

[0041] Fig.11A schematic plan view of a partial structure of a housing assembly provided in an embodiment of the present application;

[0042] Fig.12 for Fig.11 Cross-sectional view along DD direction;

[0043] Fig.13 for Fig.12 A magnified schematic diagram of the local structure at E in the middle;

[0044] Fig.14 A schematic diagram of the three-dimensional structure of a locking member in a housing assembly provided in an embodiment of the present application;

[0045] Fig.15 for Fig.11 Cross-sectional view along FF direction;

[0046] Fig.16 for Fig.15 Enlarged schematic diagram of the local structure at G in the middle.

[0047] Description of Figure Numbers:

[0048] 1. Main housing; 2. Sensor module; 3. Clamping piece; 4. Positioning structure;

[0049] 10. Shell assembly; 11. Top shell; 12. Bottom shell; 21. Sensor unit; 22. Protective shell; 23. Protective cover; 31. Main body; 32. Buckle; 41. Positioning convex part; 42. Positioning notch; 43. Avoidance hole;

[0050] 121, back plate; 122, first side plate; 123, second side plate; 211, circuit board; 212, detection element; 221, first through hole; 222, first shell; 223, second shell; 224, wire hole; 231, main body; 232, first sealing part; 233, second sealing part; 234, sleeve part; 235, extension part; 236, avoidance part; 311, detection hole; 321, clamping hole; 322, first clamping plate; 323, second clamping plate;

[0051] 1221, third through hole; 1222, limiting groove; 2221, first shell; 2222, first connecting column; 2223, first connecting hole; 2224, first threading portion; 2231, second shell; 2232, second connecting hole; 2233, second threading portion; 2234, second connecting column; 2235, locking protrusion; 2236, guiding protrusion; 2237, guiding groove; 2321, third connecting hole; 2322, wire portion; 2323, wire hole; 2324, limiting portion; 2331, sealing lip; 2332, opening; 2341, second through hole; 2342, positioning rib; 2361, avoidance groove; 3221, groove; 3222, side wall.

[0052] 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

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0058] In the related art, a sensor module is usually bonded to the inner side of the side panel of the range hood, wherein the sensor module includes a shell and a sensor installed in the inner cavity of the shell. In order to enable the sensor to detect harmful gases and odors, a hole structure is provided on the shell for exposing the detection part of the sensor.

[0059] However, in the above-mentioned range hood, when the oil flows along the extension direction of the side panel on the inner side of the side panel, it will flow to the surface of the sensor through the connection gap formed between the shell and the side panel, so that the surface of the sensor will be attached with oil stains, resulting in the sensor's ability to sense the external environment being weakened; in addition, if the oil stains are serious to a certain extent, the sensor may not be able to correctly detect the presence of oil smoke or gas, or conversely, the sensor may erroneously issue an alarm even if there is no oil smoke. This will affect the detection precision and accuracy of the sensor.

[0060] Therefore, the embodiment of the present application provides a shell assembly and a range hood, which improves the structure of the shell assembly to prevent oil from flowing to the sensor surface to a certain extent, thereby ensuring that the sensor has high detection precision and accuracy.

[0061] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0062] See also Figures 1 to 3 , Figure 1 A schematic diagram of the three-dimensional structure of a housing assembly provided in an embodiment of the present application. Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure from another perspective. Figure 3 for Figure 2 A schematic diagram of the enlarged local structure at point A in the middle. Figure 4 An exploded view of a sensor module in a housing assembly provided in an embodiment of the present application. As shown in the figure, the present embodiment provides a housing assembly 10 for a range hood, the housing assembly 10 comprising a main housing 1, the main housing 1 comprising a top housing 11 and a bottom housing 12 connected together, the bottom housing 12 comprising a back plate 121 and a first side plate 122 and a second side plate 123 connected to opposite sides of the back plate 121, wherein the top housing 11 is used to install a fan, etc., the rear plate surface of the back plate 121 forms the back of the range hood, and the back plate 121 and the top housing 11 can be detachably connected together by screws or other threaded fasteners, the first side plate 122 and the second side plate 123 can be integrally formed with the back plate 121 by injection molding, and the first side plate 122 and the top housing 11 and the second side plate 123 and the top housing 11 can be detachably connected together by screws or other threaded fasteners. Here, no specific restrictions are imposed on the structure of the main housing 1 and the connection method between the top housing 11 and the bottom housing 12.

[0063] It is understandable that during the cooking process, food oils and seasonings will produce a large amount of total volatile organic compounds (TVOC) at high temperatures, including aldehydes, ketones, alcohols and other organic compounds. Long-term exposure to high-concentration TVOC environments may cause damage to the human respiratory system and immune system, and even have the risk of cancer. Sensors with TVOC odor detection technology can monitor the concentration of these harmful substances in real time, start or adjust the working status of the range hood in time, and protect the health of users; in addition, through sensors, the range hood can automatically adjust the wind speed and exhaust volume to effectively remove fumes, odors and other volatile organic compounds in the kitchen and keep the air fresh. In addition, through the detection of TVOC by sensors, corresponding alarm functions can also be set on the range hood to remind users.

[0064] Therefore, the shell assembly 10 provided in this embodiment should also include a sensor module 2. In order to ensure the effectiveness of the sensor module 2 in detecting TVOC and to enable the range hood to maintain a good appearance performance, the sensor module 2 can be installed on the side of the first side panel 122 facing the second side panel 123.

[0065] Specifically, the sensor module 2 includes a sensor unit 21 and a protective shell 22. The sensor unit 21 is installed on the protective shell 22. A first through hole 221 is formed on the protective shell 22 for exposing a partial structure of the sensor unit 21. The protective shell 22 is connected to a side of the first side plate 122 facing the second side plate 123, and the first through hole 221 is arranged toward the first side plate 122.

[0066] In order to facilitate the assembly of the sensor unit 21 and the protective shell 22, in some optional embodiments, the protective shell 22 includes a first shell portion 222 and a second shell portion 223 that are snapped together, and the first shell portion 222 and the second shell portion 223 are detachably connected; the sensor unit 21 is installed on the first shell portion 222, the second shell portion 223 is connected to the first side plate 122, and a first through hole 221 is formed on the second shell portion 223.

[0067] The first shell 222 and the second shell 223 can be detachably connected by a fastener, such as a threaded fastener, or can be snapped together by a buckle and a slot. Here, the connection method between the first shell 222 and the second shell 223 is not specifically limited.

[0068] Specifically, the first shell portion 222 includes a first shell 2221, which is rectangular in shape, and first connecting columns 2222 are provided at the four corners of the first shell 2221, and the first connecting columns 2222 are provided with first connecting holes 2223. The second shell portion 223 includes a second shell 2231, and a second connecting column 2234 is provided at the position of the second shell 2231 corresponding to the first connecting column 2222. The second connecting column 2234 is provided in a one-to-one correspondence with the first connecting column 2222, and the second connecting column 2234 is provided with a second connecting hole 2232. The fastener can pass through the second connecting hole 2232 and the first connecting hole 2223 to detachably connect the first shell portion 222 and the second shell portion 223 together.

[0069] The sensor unit 21 includes a circuit board 211 and a detection element 212 disposed on the circuit board 211, where the detection element 212 may be a detection probe; the circuit board 211 is mounted on the first housing 2221, and the detection element 212 is exposed through the first through hole 221. In this way, the sensor unit 21 can detect TVOC in the environment.

[0070] Please combine Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the planar structure of the sensor module in the housing assembly provided in an embodiment of the present application. Figure 6 for Figure 5 Cross-sectional view along the BB direction. It is understandable that the above-mentioned circuit board 211 also needs to be electrically connected to the control module in the range hood. Therefore, the circuit board 211 needs to be connected to the wiring harness electrically connected to the control module. In order to allow the wiring harness to pass through the protective shell 22, in some specific embodiments, a first arched threading portion 2224 is provided on the side of the first shell 2221, and a second arched threading portion 2233 is provided on the side of the second shell 2231. The first threading portion 2224 and the second threading portion 2233 are buckled together to form a wire hole 224 for the wiring harness to pass through. In this way, the electrical connection between the circuit board 211 and the control module can be achieved.

[0071] When the first shell portion 222 and the second shell portion 223 are connected together, there will be a connection gap between the first shell portion 222 and the second shell portion 223. When the protective shell 22 and the first side plate 122 are connected together, there will also be a connection gap between the protective shell 22 and the first side plate 122. Therefore, during the use of the range hood, oil may flow through the above-mentioned connection gap to the surface of the detection element 212, thereby affecting the detection precision and accuracy of the sensor unit 21.

[0072] Therefore, in order to avoid the above phenomenon to a certain extent, the sensor module 2 further includes a protective sleeve 23 , which is sleeved on the outside of at least a portion of the protective shell 22 and is crimped to the first side plate 122 .

[0073] In this way, when oil flows down the first side plate 122, the protective sleeve 23 and the first side plate 122 cooperate with each other to make the sealing between the protective sleeve 23 and the first side plate 122 stronger, which can prevent the oil from flowing from between the protective sleeve 23 and the first side plate 122 to the protective shell 22 to a certain extent, and further prevent the oil from flowing through the first through hole 221 to the surface of the sensor unit 21 to a certain extent, thereby preventing the oil from adhering to the surface of the sensor unit 21 to a certain extent. Compared with the solutions in the related art, the sensor unit 21 in this embodiment has a stronger perception ability of the external environment, so that the detection precision and accuracy of the sensor unit 21 are higher.

[0074] In addition, when the protective cover 23 is mounted on at least a portion of the structure of the protective shell 22, the oil flowing onto the protective shell 22 will flow onto the protective cover 23, which can to a certain extent prevent the oil from penetrating into the surface of the sensor unit 21 through the connecting gap formed between the first shell portion 222 and the second shell portion 223, thereby further improving the detection precision and detection accuracy of the sensor unit 21.

[0075] In order to further improve the sealing between the first shell portion 222 and the second shell portion 223 , in some optional embodiments, a partial structure of the protective sleeve 23 is sandwiched between the first shell portion 222 and the second shell portion 223 .

[0076] It should be noted that when the protective sleeve 23 is elastic, the sealing between the protective sleeve 23 and the first side plate 122 and the sealing between the first shell 222 and the second shell 223 will be better. For example, the protective sleeve 23 can be made of rubber. In other embodiments, the protective sleeve 23 can also be made of other materials. Here, the material of the protective sleeve 23 is not specifically limited.

[0077] Please combine Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the three-dimensional structure of the protective sleeve in the housing assembly provided in an embodiment of the present application. Figure 8 for Figure 7Schematic diagram of the three-dimensional structure from another perspective. In some specific embodiments, the protective sleeve 23 includes a main body 231, a first sealing portion 232 and a second sealing portion 233; the main body 231 is sleeved on the outside of the protective shell 22, and the outside here can be understood as the peripheral side of the protective shell 22; the first sealing portion 232 is connected to the inner side of the main body 231 and is sandwiched between the first shell 2221 and the second shell 2231; the second sealing portion 233 is connected to the side of the main body 231 facing the first side plate 122, and the second sealing portion 233 is crimped to the first side plate 122.

[0078] When assembling the sensor module 2 in this embodiment, the sensor unit 21 should be installed on the first shell 2221 first, and then the protective cover 23 should be assembled. Finally, the second shell 223 should be installed, and the second shell 223, the protective cover 23 and the first shell 222 should be connected together.

[0079] Therefore, in some optional embodiments, a third connecting hole 2321 corresponding to the first connecting hole 2223 and the second connecting hole 2232 can be provided on the first sealing portion 232, and a fastener can pass through the second connecting hole 2232, the third connecting hole 2321 and the first connecting hole 2223 to connect the second shell portion 223, the protective cover 23 and the first shell portion 222 together.

[0080] When the protective cover 23 is assembled first and then the second shell 223 is assembled, at this time, in order to play a certain guiding role for the wiring harness connected to the circuit board 211 so that the wiring harness can be guided into the above-mentioned wire hole 224, in some embodiments, an arched wire portion 2322 can be formed on the first sealing portion 232, and a wire hole 2323 is formed in the wire portion 2322. The wiring harness connected to the circuit board 211 first passes through the wire hole 2323 and then passes through the wire hole 224.

[0081] Furthermore, when assembling the second shell 223, if the protective cover 23 and the second shell 223 can be positioned, the assembly efficiency of the sensor module 2 can be improved. Thus, in some optional embodiments, a limiting portion 2324 is provided on the wire portion 2322, and the limiting portion 2324 and the main body portion 231 clamp the side wall of the second shell 2231. In this way, the relative position between the second shell 223 and the protective cover 23 can be limited to improve the assembly efficiency of the sensor module 2.

[0082] In order to achieve a close fit between the protective cover 23 and the sensor unit 21 and to improve the sealing between the protective cover 23 and the sensor unit 21, in some embodiments, a sleeve portion 234 is formed on the first sealing portion 232 and is sleeved on the outside of the detection element 212. The inner hole of the sleeve portion 234 is formed as a second through hole 2341 arranged opposite to the first through hole 221. That is to say, the detection element 212 is exposed through the second through hole 2341 and the first through hole 221 in turn.

[0083] Furthermore, in order to improve the connection reliability between the sleeve portion 234 and the detection element 212, a plurality of positioning ribs 2342 are arranged at intervals along the circumference of the second through hole 2341 on the inner wall of the second through hole 2341. The positioning ribs 2342 can fit tightly with the outer circumferential surface of the detection element 212. In this way, the sealing between the sleeve portion 234 and the detection element 212 can be further improved, and a certain positioning effect can be played on the assembly between the sensor unit 21 and the protective cover 23, thereby improving the assembly efficiency of the sensor module 2.

[0084] It can be understood that, whether it is the sealing between the first shell portion 222 and the second shell portion 223, or the sealing between the sensor module 2 and the first side plate 122, the purpose is to prevent the oil from flowing to the surface of the detection element 212 in all directions as much as possible. For the sealing between the first shell portion 222 and the second shell portion 223, it is necessary to seal the connection gap formed between the first shell portion 222 and the second shell portion 223. For the sealing between the sensor module 2 and the first side plate 122, it is necessary to seal the connection gap formed between the sensor module 2 and the first side plate 122. Therefore, the extension direction of the first sealing portion 232 should be consistent with the extension direction of the connection gap formed between the first shell portion 222 and the second shell portion 223, and the extension direction of the second sealing portion 233 should be consistent with the extension direction of the connection gap formed between the sensor module 2 and the first side plate 122. That is, in the specific implementation of this embodiment, the first sealing portion 232 and the second sealing portion 233 both extend along the circumference of the protective shell 22. In this way, both the connection gap between the first shell portion 222 and the second shell portion 223 and the connection gap between the sensor module 2 and the first side plate 122 can be effectively sealed to prevent oil from flowing to the surface of the detection element 212 to a certain extent.

[0085] In order to arrange the sleeve portion 234 , an extension portion 235 is connected to the inner side of the first sealing portion 232 , and the sleeve portion 234 is connected to the extension portion 235 .

[0086] If the force applied by the second sealing part 233 to the first side plate 122 is greater, the sealing between the first side plate 122 and the sensor module 2 is stronger. Thus, in some embodiments, the second sealing part 233 includes a plurality of sealing lips 2331, and the plurality of sealing lips 2331 correspond to the plurality of edges of the main body 231 one by one, and an opening 2332 is formed between two adjacent sealing lips 2331; one end of the sealing lip 2331 is connected to the corresponding edge, and the other end is crimped to the first side plate 122. Thus, by forming a plurality of openings 2332, the deformation of the second sealing part 233 is increased, and when the sensor module 2 is assembled to the first side plate 122, the sealing lip 2331 can fit tightly with the first side plate 122, so as to achieve effective sealing between the sensor module 2 and the first side plate 122.

[0087] Of course, if the contact area between the sealing lip 2331 and the first side plate 122 is larger, the sealing performance between the sensor module 2 and the first side plate 122 is better. Based on this, in some optional embodiments, the other end of the sealing lip 2331 is turned outward compared to one end of the sealing lip 2331. The turning outward here can be understood as extending away from the center of the protective sleeve 23. In this case, when the sensor module 2 is installed, when the sealing lip 2331 contacts the first side plate 122, the sealing lip 2331 will be deformed to the side away from the center of the protective sleeve 23. At this time, the contact area between the end of the sealing lip 2331 and the first side plate 122 will be larger. In this way, the oil flowing on the first side plate 122 can be further prevented from flowing to the surface of the detection element 212 to a certain extent. Thereby, the detection precision and accuracy of the detection element 212 can be further improved.

[0088] The assembly method between the sensor module 2 and the first side plate 122 can also be conducive to improving the assembly efficiency of the housing assembly 10. Therefore, the sensor module 2 and the first side plate 122 can be connected together in a detachable connection method. Specifically, the second shell 223 is detachably connected to the first side plate 122. In this way, the assembly efficiency of the sensor module 2 provided in this embodiment is high, and the sensor module 2 can be quickly disassembled. When the circuit board 211 or the detection element 212 inside the sensor module 2 is damaged, the sensor module 2 can be removed as a whole, and the circuit board 211 or the detection element 212 can be repaired or replaced.

[0089] From the above, it can be seen that in the relevant technology, the sensor module is bonded to the side panel. This method, on the one hand, will cause a deviation between the installation position of the sensor module and the preset position, which may affect the realization of the sensor module's own functions. On the other hand, the bonding method is relatively unreliable. If the sensor module falls off from the side panel, it will not only affect the realization of the sensor module's own functions, but also affect the normal use of the range hood.

[0090] Therefore, in this embodiment, the second shell portion 223 and the first side plate 122 may be connected by a snap-fit ​​connection.

[0091] Please combine Figures 9 to 11 , Fig. 9 This is a schematic diagram of the exploded structure of the housing assembly provided in the embodiment of the present application. Fig.10 for Fig. 9 The enlarged schematic diagram of the local structure at C in the middle. Fig.11 A schematic diagram of a partial structure of a housing assembly provided in an embodiment of the present application. As shown in the figure, the protective shell 22 and the first side plate 122 can be connected by a snap-fit ​​member 3, specifically, the second shell portion 223 and the first side plate 122 are connected by a snap-fit ​​member 3.

[0092] Please continue to combine Figure 12 to Figure 14 , Fig.12 for Fig.11 Cross-sectional view along DD direction, Fig.13 for Fig.12 The enlarged schematic diagram of the local structure at E in the middle. Fig.14 A schematic diagram of the three-dimensional structure of the engaging member in the housing assembly provided in the embodiment of the present application. In some specific embodiments, the engaging member 3 includes a main body 31 and a buckle portion 32; the main body 31 is arranged on the side of the first side plate 122 away from the second side plate 123, and the first side plate 122 is formed with a third through hole 1221 for the buckle portion 32 to pass through; the buckle portion 32 is formed with a snap hole 321, and the second shell 223 is formed with a snap protrusion 2235, and the snap protrusion 2235 is snap-connected with the snap hole 321 to snap-connect the second shell 223 with the first side plate 122, so that the sensor module 2 can be snap-connected with the first side plate 122.

[0093] In order to make the buckle part 32 and the clamping protrusion 2235 reliably clamped together, in some optional embodiments, one end of the buckle part 32 away from the main body 31 extends toward the side close to the clamping protrusion 2235. Specifically, the buckle part 32 includes a first clamping plate 322 and a second clamping plate 323 connected together, one end of the first clamping plate 322 is connected to the main body 31, and the other end extends along the axial direction of the main body 31 and is connected to one end of the second clamping plate 323, and the other end of the second clamping plate 323 extends toward the side close to the clamping protrusion 2235, and the clamping hole 321 is provided on the first clamping plate 322. In this way, during the process of the buckle part 32 and the clamping protrusion 2235 being clamped together, the buckle part 32 can exert a force on the clamping protrusion 2235, so that the buckle part 32 and the clamping protrusion 2235 can be reliably clamped together.

[0094] Furthermore, in order to improve the connection reliability between the engaging member 3 and the second shell 223, two snap parts 32 are provided, and the two snap parts 32 are axially symmetrically arranged about the central axis of the main body 31. In this way, not only the engaging member 3 and the second shell 223 can be more reliably engaged, but also the force on the second shell 223 is more uniform, thereby improving the installation stability of the sensor module 2, and thus the detection stability of the detection element 212 can be improved.

[0095] Of course, when two locking portions 32 are provided, two locking protrusions 2235 should also be provided on the second shell portion 223 , and one locking protrusion 2235 corresponds to one locking portion 32 .

[0096] In the process of the engagement of the engaging member 3 with the protective shell 22, the engaging member 3 needs to move along the thickness direction of the first side plate 122. At this time, in order to guide the moving direction of the engaging member 3, so that the engaging protrusion 2235 and the buckle portion 32 can be effectively engaged, and the assembly efficiency of the engaging member 3 connecting the sensor module 2 and the first side plate 122 is improved. In some optional embodiments, two guide protrusions 2236 are provided on the second shell 2231, the engaging protrusion 2235 is located between the two guide protrusions 2236, and the opposite sides of the buckle portion 32 are respectively abutted against the two guide protrusions 2236. In this way, in the process of the engagement of the engaging member 3 with the second shell 223, a guide groove 2237 that is slidably matched with a buckle portion 32 can be formed between the two guide protrusions 2236 to guide the engaging member 3 in the process of its movement, thereby improving the connection efficiency and connection reliability between the engaging member 3 and the protective shell 22.

[0097] It is understandable that when the two opposite sides of the second shell 2231 are provided with locking protrusions 2235 , two guiding protrusions 2236 should also be provided on the two opposite sides of the second shell 2231 , so that one locking portion 32 corresponds to two guiding protrusions 2236 .

[0098] Since in the assembly process of the housing assembly 10, the first side plate 122 and the sensor module 2 are assembled together through the snap-fitting member 3 after the sensor module 2 is assembled, and the second shell portion 223 is the last part to be assembled in the assembly process of the sensor module 2, it is necessary to provide a relief portion 236 corresponding to the two snap-fitting portions 32 on the main body portion 231, and a relief groove 2361 is formed on the relief portion 236, and the snap-fitting portion 32 is located in the corresponding relief groove 2361 after being snap-fitted and connected with the corresponding clamping protrusion 2235. In this way, the snap-fitting portion 32 can be relieved.

[0099] In order to avoid the influence of the setting of the engaging member 3 on the detection range of the detection element 212 to a certain extent, in some optional embodiments, a plurality of detection holes 311 are provided on the main body 31, and the plurality of detection holes 311 are arranged in an array. Among them, the detection hole 311 located in the middle is a circular hole, and the other detection holes 311 are arc-shaped bar holes, and in the direction away from the detection hole 311 in the middle, the extension length of the detection hole 311 increases first and then decreases. In this way, it can be adapted to the detection range of the detection element 212, so that the detection element 212 has higher detection precision and accuracy for TVOC in the environment.

[0100] Before the first side plate 122 and the protective shell 22 are connected together by the snap-fitting member 3, if the relative position between the first side plate 122 and the protective shell 22 can be determined, the assembly efficiency between the first side plate 122 and the sensor module 2 will be further improved. Therefore, in some embodiments, a positioning structure 4 is provided between the protective shell 22 and the first side plate 122, and the positioning structure 4 is used to limit the relative position between the protective shell 22 and the first side plate 122. That is to say, before the first side plate 122 and the protective shell 22 are connected together by the snap-fitting member 3, the first side plate 122 and the protective shell 22 can be aligned by the positioning structure 4, that is, the first side plate 122 and the sensor module 2 can be aligned by the positioning structure 4, and after the alignment is completed, the first side plate 122 and the protective shell 22 are connected together by the snap-fitting member 3.

[0101] Specifically, the positioning structure 4 includes a positioning protrusion 41 and a positioning notch 42, wherein the positioning protrusion 41 is provided on the protective shell 22, and the positioning notch 42 is formed on the hole wall of the third through hole 1221; wherein the positioning protrusion 41 is located in the positioning notch 42, and the positioning protrusion 41 and the inner wall of the positioning notch 42 enclose a avoidance hole 43 for the buckle portion 32 to pass through. In this way, before the first side plate 122 and the protective shell 22 are connected by the snap-fit ​​member 3, the first side plate 122 and the protective shell 22 can be aligned by the cooperation of the positioning protrusion 41 and the positioning notch 42, that is, the first side plate 122 and the sensor module 2 can be aligned, so that the assembly efficiency between the first side plate 122 and the sensor module 2 can be improved, and the installation position of the sensor module 2 can be closer to the preset installation position, thereby ensuring the detection accuracy of the detection element 212.

[0102] It should be noted that, in the present embodiment, the first through hole 221, the second through hole 2341 and the third through hole 1221 are coaxially arranged, so as to ensure that the detection part of the detection element 212 can be effectively exposed.

[0103] More specifically, there are two positioning protrusions 41, and the two positioning protrusions 41 are symmetrically arranged on opposite sides of the first through hole 221 about the central axis of the first through hole 221. Correspondingly, there are also two positioning notches 42, which are symmetrically arranged about the central axis of the third through hole 1221. In this way, the sensor module 2 has greater stability after installation.

[0104] Please combine Fig.15 and Fig.16 , Fig.15 for Fig.11 Cross-sectional view along the FF direction, Fig.16 for Fig.15 A schematic diagram of the enlarged local structure at G in the middle. In some specific embodiments, in order to further improve the connection reliability between the first side plate 122 and the sensor module 2, a groove 3221 is formed on the first clamping plate 322 of the buckle portion 32, and the groove 3221 has a side wall 3222 arranged opposite to the main body 31, and the side wall 3222 abuts against the side of the first side plate 122 facing the second side plate 123. In this way, there is also a certain clamping relationship between the clamping member 3 and the first side plate 122, so that the connection reliability between the first side plate 122 and the sensor module 2 can be further improved.

[0105] In some embodiments, in order to improve the overall aesthetic performance of the housing assembly 10, a limiting groove 1222 is formed on the first side plate 122, and the third through hole 1221 is formed on the bottom wall of the limiting groove 1222; wherein, the main body 31 is located in the limiting groove 1222, and the end face of the main body 31 that is away from the buckle portion 32 is located in the same plane as the plate surface of the first side plate 122. In this way, even after the clamping member 3 is set, it will not have a significant impact on the appearance of the housing assembly 10, and the overall aesthetic performance of the housing assembly 10 can still be guaranteed; in addition, through the setting of the limiting groove 1222, the position of the clamping member 3 can be limited to a certain extent, which can avoid the position of the clamping member 3 from being offset during the operation of the range hood to a certain extent, and further improve the connection reliability between the first side plate 122 and the sensor module 2.

[0106] Specifically, when assembling the sensor module 2 and the first side plate 122, the sensor unit 21 is first installed on the first shell 222, and then the protective cover 23 is installed so that the sleeve 234 is sleeved on the detection element 212. Thereafter, the second shell 223 is installed, and the second shell 223, the protective cover 23 and the first shell 222 are connected together by fasteners to form the sensor module 2; then, the alignment between the sensor module 2 and the first side plate 122 is achieved through the cooperation between the positioning protrusion 41 and the positioning notch 42, and finally, the sensor module 2 and the first side plate 122 are connected together by the snap-fit ​​member 3.

[0107] This embodiment further provides a range hood, comprising the housing assembly 10 in the above embodiment. The structure of the housing assembly 10 has been described in detail in the above embodiment, and will not be described again here.

[0108] It should be noted that the range hood provided in this embodiment should also include components or modules such as a fan, etc. Here, other components or modules included in the range hood provided in this embodiment are not limited one by one.

[0109] The range hood provided in this embodiment adopts the housing assembly 10 of the above-mentioned embodiment, so that the range hood provided in this embodiment has better performance.

[0110] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A housing assembly for a range hood, characterized in that: The housing assembly comprises: main housing; a sensor unit and a protective shell, wherein the sensor unit is mounted on the protective shell, a first through hole is formed on the protective shell for partially exposing the structure of the sensor unit, the first through hole is arranged toward the main shell, and the protective shell is connected to the main shell; and The protective sleeve is sleeved on the outside of at least a portion of the structure of the protective shell, and the protective sleeve is crimped to the main shell.

2. The housing assembly according to claim 1, wherein: The main housing comprises a top shell and a bottom shell connected together, and the bottom shell comprises a back plate and a first side plate and a second side plate connected to opposite sides of the back plate; The protective shell is connected to a side of the first side plate facing the second side plate, and the first through hole is arranged toward the first side plate.

3. The housing assembly according to claim 2, wherein: The protective shell comprises a first shell portion and a second shell portion that are buckled together, and the first shell portion and the second shell portion are detachably connected; The sensor unit is mounted on the first shell; Part of the structure of the protective sleeve is sandwiched between the first shell portion and the second shell portion; The second shell portion is connected to the main shell, and the first through hole is formed on the second shell portion.

4. The housing assembly according to claim 3, characterized in that: The protective sleeve comprises a body portion, a first sealing portion and a second sealing portion; The main body is sleeved on the outside of the protective shell; The first sealing portion is connected to the inner side of the main body portion and is sandwiched between the first shell portion and the second shell portion; The second sealing portion is connected to a side of the main body facing the first side plate, and the second sealing portion is crimped to the first side plate.

5. The housing assembly according to claim 4, characterized in that: The first sealing portion and the second sealing portion both extend along the circumference of the protective shell.

6. The housing assembly according to claim 4, wherein: The second sealing portion includes a plurality of sealing lips, the plurality of sealing lips correspond to the plurality of edges of the main body portion one by one, and an opening is formed between two adjacent sealing lips; One end of the sealing lip is connected to the corresponding edge, and the other end is crimped to the first side plate.

7. The housing assembly according to claim 6, wherein: The other end of the sealing lip is turned outward compared to the one end of the sealing lip.

8. The housing assembly according to claim 4, wherein: The sensor unit includes a circuit board and a detection element arranged on the circuit board; The circuit board is mounted on the first shell portion, and the detection element is exposed through the first through hole; A sleeve portion sleeved on the outside of the detection element is formed on the first sealing portion, and an inner hole of the sleeve portion is formed as a second through hole arranged opposite to the first through hole.

9. The housing assembly according to any one of claims 2 to 8, characterized in that: The protective shell is detachably connected to the first side plate.

10. The housing assembly according to claim 9, wherein: The protective shell is connected to the first side plate by a clamping piece.

11. The housing assembly according to claim 10, wherein: The engaging member comprises a main body and a buckle portion; The main body is arranged on a side of the first side plate away from the second side plate, and a third through hole is formed on the first side plate for the buckle portion to pass through; A snap-fit ​​hole is formed on the snap-fit ​​portion, and a snap-fit ​​protrusion is formed on the protective shell. The snap-fit ​​protrusion is snap-fitted and connected with the snap-fit ​​hole to snap-fit ​​and connect the protective shell and the first side plate.

12. The housing assembly according to claim 11, wherein: One end of the buckle portion away from the main body portion extends toward a side close to the locking protrusion.

13. The housing assembly according to claim 11, wherein: The main body is provided with a plurality of detection holes which are distributed at intervals and are arranged in an array.

14. The housing assembly according to claim 11, wherein: The buckle parts are provided in two pieces, and the two buckle parts are arranged axially symmetrically with respect to the central axis of the main body; and / or, A groove is formed on the buckle portion, and the groove has a side wall arranged opposite to the main body portion, and the side wall abuts against a side of the first side plate facing the second side plate.

15. The housing assembly according to claim 11, wherein: The protective shell is provided with two guiding protrusions; The locking protrusion is located between the two guiding protrusions, and the opposite sides of the locking portion are respectively in contact with the two guiding protrusions.

16. The housing assembly according to claim 11, wherein: A positioning structure is provided between the protective shell and the first side plate, and the positioning structure is used to limit the relative position between the protective shell and the first side plate.

17. The housing assembly according to claim 16, wherein: The positioning structure includes a positioning protrusion and a positioning notch, the positioning protrusion is arranged on the protective shell, and the positioning notch is formed on the hole wall of the third through hole; Wherein, the positioning protrusion is located in the positioning notch, and the positioning protrusion and the inner wall of the positioning notch are combined to form an avoidance hole for the buckle portion to pass through.

18. The housing assembly according to any one of claims 11 to 17, characterized in that: A limiting groove is formed on the first side plate, and the third through hole is formed on the bottom wall of the limiting groove; The main body is located in the limiting groove, and the end surface of the main body facing away from the buckle portion is located in the same plane as the plate surface of the first side plate.

19. The housing assembly according to any one of claims 1 to 8 and 10 to 17, characterized in that: The protective sleeve is an elastic member.

20. A range hood, characterized in that: A housing assembly comprising any one of claims 1 to 19.

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