Shell assembly and range hood

Abstract

The utility model discloses a shell assembly and a range hood. The shell assembly provided by the utility model 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 particularly relates to a housing assembly and a range hood applying the housing assembly. Background Art

[0002] Currently, in range hoods, sensors for detecting the smell of Total Volatile Organic Compounds (TVOC) are provided, which are mainly used to monitor harmful gases and peculiar smells generated during cooking.

[0003] In the related art, a sensor module is usually adhered to the inner side of the side plate of the range hood. The sensor module includes a housing and a sensor installed in the inner cavity of the housing. In order to enable the sensor to detect harmful gases and peculiar smells, a hole structure for exposing the detection part of the sensor is provided on the housing.

[0004] However, in the above-mentioned range hood, when the oil flows along the extension direction of the side plate on the inner side of the side plate, it will flow to the surface of the sensor through the connection gap formed between the housing and the side plate. In this way, the surface of the sensor will be attached with oil stains, which will affect the detection accuracy and accuracy of the sensor. Summary of the Utility Model

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

[0006] On the one hand, the present application provides a housing assembly for a range hood. The housing assembly includes a main housing, a sensor unit, a protective housing, and a protective sleeve; the sensor unit is installed in the protective housing, a first through hole for exposing a part of the structure of the sensor unit is formed on the protective housing, the first through hole faces the main housing, and the protective housing is connected to the main housing; the protective sleeve is sleeved on at least a part of the outer side of the protective housing, and the protective sleeve is press-fitted to the main housing.

[0007] As an optional implementation manner, the main housing 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 to opposite sides of the back plate; the protective housing is connected to the side of the first side plate facing the second side plate, and the first through hole faces the first side plate.

[0008] As an optional implementation manner, the protective housing includes a first housing part and a second housing part buckled together. The first housing part and the second housing part are detachably connected; the sensor unit is installed in the first housing part; a part of the structure of the protective sleeve is clamped between the first housing part and the second housing part; the second housing part is connected to the main housing, and a first through hole is formed on the second housing part.

[0009] As an alternative embodiment, the protective cover includes a main body portion, a first sealing portion, and a second sealing portion; the main body portion is sleeved outside the protective shell; the first sealing portion is connected to the inner side of the main body portion and is clamped between the first shell portion and the second shell portion; the second sealing portion is connected to one side of the main body portion facing the first side plate, and the second sealing portion is pressed against the first side plate.

[0010] As an alternative embodiment, both the first sealing portion and the second sealing portion extend along the circumferential direction of the protective shell.

[0011] As an alternative embodiment, 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 pressed against the first side plate.

[0012] As an alternative embodiment, the other end of the sealing lip is turned outwards compared to the one end of the sealing lip.

[0013] As an alternative embodiment, the sensor unit includes a circuit board and a detection element disposed 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 socket portion sleeved outside the detection element is formed on the first sealing portion, and the inner hole of the socket portion is formed as a second through hole disposed opposite to the first through hole.

[0014] As an alternative embodiment, the protective shell is detachably connected to the first side plate.

[0015] As an alternative embodiment, the protective shell and the first side plate are snap-connected through a snap-fit member.

[0016] As an alternative embodiment, the snap-fit member includes a main body portion and a snap portion; the main body portion is disposed on the side of the first side plate facing away from the second side plate, and a third through hole for the snap portion to pass through is formed on the first side plate; a snap hole is formed on the snap portion, and a snap projection is formed on the protective shell, and the snap projection is snap-connected to the snap hole to snap-connect the protective shell and the first side plate.

[0017] As an alternative embodiment, the end of the snap portion away from the main body portion extends towards the side close to the snap projection.

[0018] As an alternative embodiment, a plurality of detection holes are formed on the main body portion and are spaced apart from each other, and the plurality of detection holes are arranged in an array.

[0019] As an alternative embodiment, two snap portions are provided, and the two snap portions are axially symmetrically arranged with respect to the central axis of the main body portion.

[0020] As an alternative embodiment, a groove is formed on the buckle portion. The groove has side walls disposed opposite to the main body portion, and the side walls abut against one side of the first side plate facing the second side plate.

[0021] As an alternative embodiment, two guiding protrusions are provided on the protective shell; the clamping protrusion is located between the two guiding protrusions, and opposite sides of the buckle portion respectively abut against the two guiding protrusions.

[0022] As an alternative embodiment, 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 alternative embodiment, the positioning structure includes a positioning protrusion and a positioning notch. The positioning protrusion is provided on the protective shell, and the positioning notch is formed on the wall of the third through hole; wherein, the positioning protrusion is located within the positioning notch, and the positioning protrusion and the inner wall of the positioning notch enclose an avoidance hole for the buckle portion to pass through.

[0024] As an alternative embodiment, 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; wherein, the main body portion is located within the limiting groove, and the end surface of the main body portion facing away from the buckle portion and the plate surface of the first side plate are in the same plane.

[0025] As an alternative embodiment, the protective sleeve is an elastic member.

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

[0027] In the housing assembly and the range hood in the embodiments of the present application, the housing assembly includes a protective sleeve. The protective sleeve is sleeved on the outside of at least part of the structure of the protective shell, and the protective sleeve is press-fitted to the main housing.

[0028] In this way, when oil flows down on the side plate, under the cooperation between the protective sleeve and the main housing, the sealing performance between the protective sleeve and the main housing is relatively strong, so that it can to a certain extent prevent the oil from flowing from between the protective sleeve and the main housing to the protective shell, and further can to a certain extent prevent the oil from flowing to the surface of the sensor unit through the first through hole, thereby being able to to a certain extent prevent the oil from adhering to the surface of the sensor unit. Compared with the solutions in the related art, the sensor unit in the embodiments of the present application has a stronger ability to perceive the external environment, so that the detection accuracy and accuracy of the sensor unit are higher;

[0029] In addition, when the protective sleeve is sleeved on at least part of the structure of the protective shell, at this time, the oil flowing onto the protective shell will flow onto the protective sleeve. If there are connecting gaps or the like in the protective shell due to its own structural design, it can, to a certain extent, prevent the oil from infiltrating the surface of the sensor unit through the connecting gaps, thereby further improving the detection accuracy and detection accuracy of the sensor unit. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0031] Figure 1 Schematic perspective view of the housing assembly provided by the embodiment of the present application;

[0032] Figure 2 is Figure 1 Schematic perspective view from another perspective;

[0033] Figure 3 is Figure 2 Enlarged schematic view of the partial structure at A in

[0034] Figure 4 Exploded view of the sensor module in the housing assembly provided by the embodiment of the present application;

[0035] Figure 5 Schematic plan view of the sensor module in the housing assembly provided by the embodiment of the present application;

[0036] Figure 6 is Figure 5 Cross-sectional view taken along the B-B direction;

[0037] Figure 7 Schematic perspective view of the protective sleeve in the housing assembly provided by the embodiment of the present application;

[0038] Figure 8 is Figure 7 Schematic perspective view from another perspective;

[0039] Figure 9 Exploded view of the housing assembly provided by the embodiment of the present application;

[0040] Figure 10 is Figure 9 Enlarged schematic view of the partial structure at C in

[0041] Figure 11It is a schematic plan view of a partial structure of the housing assembly provided by an embodiment of the present application;

[0042] Figure 12 is Figure 11 a sectional view along the D-D direction;

[0043] Figure 13 is Figure 12 a schematic enlarged view of the partial structure at E in;

[0044] Figure 14 It is a schematic three-dimensional structure view of the engaging member in the housing assembly provided by an embodiment of the present application;

[0045] Figure 15 is Figure 11 a sectional view along the F-F direction;

[0046] Figure 16 is Figure 15 a schematic enlarged view of the partial structure at G in.

[0047] Explanation of the reference numerals in the drawings:

[0048] 1. Main housing; 2. Sensor module; 3. Engaging member; 4. Positioning structure;

[0049] 10. Housing assembly; 11. Top shell; 12. Bottom shell; 21. Sensor unit; 22. Protective shell; 23. Protective sleeve; 31. Main body part; 32. Buckle part; 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 part; 223. Second shell part; 224. Wire passing hole; 231. Body part; 232. First sealing part; 233. Second sealing part; 234. Socket 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 wire passing part; 2231. Second shell; 2232. Second connecting hole; 2233. Second wire passing part; 2234. Second connecting column; 2235. Clamping protrusion; 2236. Guide convex part; 2237. Guide groove; 2321. Third connecting hole; 2322. Wire part; 2323. Wire hole; 2324. Limiting part; 2331. Sealing lip; 2332. Opening; 2341. Second through hole; 2342. Positioning rib; 2361. Avoidance groove; 3221. Groove; 3222. Side wall.

[0052] The realization, functional features and advantages of the present application will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

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

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

[0056] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[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 ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

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

[0059] However, in the above-mentioned range hood, when the oil liquid flows along the extension direction of the side plate on the inner side of the side plate, it will flow to the surface of the sensor through the connection gap formed between the outer shell and the side plate. In this way, the surface of the sensor will be attached with oil stains, resulting in the weakening of the sensor's perception ability of the external environment. In addition, if the oil stains are severe to a certain extent, it may cause the sensor to fail to correctly detect the presence of oil fume or gas, or conversely, even without oil fume, the sensor may wrongly issue an alarm. In this way, it will affect the detection accuracy and accuracy of the sensor.

[0060] Therefore, the embodiment of the present application provides a housing assembly and a range hood. By improving the structure of the housing assembly, it is possible to avoid the oil liquid flowing to the surface of the sensor to a certain extent, so as to ensure that the sensor has strong detection accuracy and accuracy.

[0061] The following will introduce the embodiments of the present application in detail with reference to the drawings and specific implementation manners.

[0062] Please refer to Figures 1 to 3 , Figure 1 which is a three-dimensional structure schematic diagram of the housing assembly provided by the embodiment of the present application, Figure 2 is Figure 1 a three-dimensional structure schematic diagram from another perspective, Figure 3 is Figure 2 a partial structure enlarged schematic diagram at A in Figure 4 which is an exploded view of the sensor module in the housing assembly provided by the 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 includes a main housing 1. The main housing 1 includes a top shell 11 and a bottom shell 12 connected together. The bottom shell 12 includes 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. Among them, the top shell 11 is used to install a fan, etc. The rear plate surface of the back plate 121 forms the back surface of the range hood, and the back plate 121 and the top shell 11 can be detachably connected together by screw fasteners such as screws. The first side plate 122 and the second side plate 123 and the back plate 121 can be integrally formed by injection molding, and both between the first side plate 122 and the top shell 11 and between the second side plate 123 and the top shell 11 can be detachably connected together by screw fasteners such as screws. Here, the structure of the main housing 1 and the connection manner between the top shell 11 and the bottom shell 12 are not specifically limited.

[0063] It is understandable that during the cooking process, a large amount of Total Volatile Organic Compounds (TVOC), including organic compounds such as aldehydes, ketones, and alcohols, will be generated when food oils and seasonings are exposed to high temperatures. Long-term exposure to a high-concentration TVOC environment may cause harm to the human respiratory system and immune system, and even pose a carcinogenic risk. A sensor with TVOC odor detection technology can monitor the concentration of these harmful substances in real time, promptly start or adjust the working state of the range hood to protect the health of users; in addition, through the sensor, the range hood can automatically adjust the wind speed and exhaust volume to effectively remove cooking fumes, odors, and other volatile organic compounds in the kitchen and keep the air fresh. Additionally, through the detection of TVOC by the sensor, an alarm function can be set on the range hood to alert users.

[0064] Therefore, the housing assembly 10 provided in this embodiment should further 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 good appearance performance, the sensor module 2 can be installed on the side of the first side plate 122 facing the second side plate 123.

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

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

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

[0068] Specifically, the first housing portion 222 includes a first housing 2221, the first housing 2221 is rectangular in shape, and first connection posts 2222 are provided at four corners of the first housing 2221. First connection holes 2223 are formed in the first connection posts 2222. The second housing portion 223 includes a second housing 2231. Second connection posts 2234 are provided at positions corresponding to the first connection posts 2222 on the second housing 2231. The second connection posts 2234 are arranged in one-to-one correspondence with the first connection posts 2222. Second connection holes 2232 are formed in the second connection posts 2234. A fastener can pass through the second connection hole 2232 and the first connection hole 2223 to detachably connect the first housing portion 222 and the second housing portion 223 together.

[0069] The sensor unit 21 includes a circuit board 211 and a detection element 212 disposed on the circuit board 211. Here, the detection element 212 can be a detection probe. The circuit board 211 is installed in 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 refer to Figure 5 and Figure 6 , Figure 5 which is a schematic plan view of the sensor module in the housing assembly provided by the embodiment of the present application. Figure 6 is Figure 5 a cross-sectional view taken along the B-B direction. It can be understood that the above-mentioned circuit board 211 also needs to be electrically connected to the control module in the range hood. Therefore, a wire harness for connecting to the control module needs to be provided on the circuit board 211. In order to allow the wire harness to pass through the protective housing 22, in some specific embodiments, a first wire-passing portion 2224 that arches is provided on the side of the first housing 2221, and a second wire-passing portion 2233 that arches is provided on the side of the second housing 2231. The first wire-passing portion 2224 and the second wire-passing portion 2233 are buckled together to form a wire-passing hole 224 for the wire 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 housing portion 222 and the second housing portion 223 are connected together, there will be a connection gap between the first housing portion 222 and the second housing portion 223. When the protective housing 22 is connected to the first side plate 122, there will also be a connection gap between the protective housing 22 and the first side plate 122. Therefore, during the use of the range hood, the oil liquid may flow to the surface of the detection element 212 through the above-mentioned connection gap, thereby affecting the detection accuracy and accuracy of the sensor unit 21.

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

[0073] In this way, when there is oil flowing down on the first side plate 122, under the cooperation between the protective sleeve 23 and the first side plate 122, the sealing performance between the protective sleeve 23 and the first side plate 122 is relatively strong, so that it can be avoided to a certain extent that the oil flows from between the protective sleeve 23 and the first side plate 122 to the protective shell 22. Furthermore, it can be avoided to a certain extent that the oil flows to the surface of the sensor unit 21 through the first through hole 221, thereby being able to avoid to a certain extent that the oil adheres to the surface of the sensor unit 21. Compared with the solutions in the related art, the sensor unit 21 in this embodiment has a stronger ability to perceive the external environment, so that the detection accuracy and accuracy of the sensor unit 21 are higher.

[0074] In addition, when the protective sleeve 23 is sleeved on at least part of the structure of the protective shell 22, at this time, the oil flowing onto the protective shell 22 will flow onto the protective sleeve 23, which can avoid to a certain extent that the oil infiltrates the surface of the sensor unit 21 through the connection gap formed between the first shell part 222 and the second shell part 223, thereby being able to further improve the detection accuracy and detection accuracy of the sensor unit 21.

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

[0076] It should be noted that when the protective sleeve 23 is elastic, the sealing performance between the protective sleeve 23 and the first side plate 122 and the sealing performance between the first shell part 222 and the second shell part 223 will be better. Exemplarily, the protective sleeve 23 can be made of rubber material. 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 refer to Figure 7 and Figure 8 , Figure 7 which is the three-dimensional structural schematic diagram of the protective sleeve in the housing assembly provided by the embodiment of the present application. Figure 8 is Figure 7Schematic diagram of a three-dimensional structure from another perspective. In some specific embodiments, the protective sleeve 23 includes a body portion 231, a first sealing portion 232, and a second sealing portion 233; the body portion 231 is sleeved outside 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 body portion 231 and is clamped between the first housing 2221 and the second housing 2231; the second sealing portion 233 is connected to the side of the body portion 231 facing the first side plate 122, and the second sealing portion 233 is press-fitted against the first side plate 122.

[0078] When assembling the sensor module 2 in this embodiment, the sensor unit 21 should be first installed on the first housing 2221, then the protective sleeve 23 is assembled, and finally, the second housing portion 223 is installed to connect the second housing portion 223, the protective sleeve 23, and the first housing portion 222 together.

[0079] Therefore, in some alternative embodiments, third connection holes 2321 corresponding to the first connection holes 2223 and the second connection holes 2232 can be provided on the first sealing portion 232, and fasteners can pass through the second connection holes 2232, the third connection holes 2321, and the first connection holes 2223 to connect the second housing portion 223, the protective sleeve 23, and the first housing portion 222 together.

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

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

[0082] In order to achieve a tight fit between the protective sleeve 23 and the sensor unit 21 to improve the sealing performance between the protective sleeve 23 and the sensor unit 21, in some embodiments, a socket portion 234 sleeving the outside of the detection element 212 is formed on the first sealing portion 232. The inner hole of the socket portion 234 is formed as a second through hole 2341 disposed 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 sequence.

[0083] Furthermore, in order to improve the connection reliability between the socket portion 234 and the detection element 212, a plurality of positioning ribs 2342 are arranged at intervals along the circumferential direction of the second through hole 2341 on the inner wall of the second through hole 2341. The positioning ribs 2342 can be closely attached to the outer peripheral surface of the detection element 212. In this way, the sealing performance between the socket portion 234 and the detection element 212 can be further improved. Moreover, it can play a certain positioning effect on the assembly between the sensor unit 21 and the protective sleeve 23, and improve the assembly efficiency of the sensor module 2.

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

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

[0086] If the force exerted by the second sealing portion 233 on the first side plate 122 is greater, the sealing performance between the first side plate 122 and the sensor module 2 is stronger. Thus, in some embodiments, the second sealing portion 233 includes a plurality of sealing lips 2331, and the plurality of sealing lips 2331 correspond to the plurality of edges of the body portion 231 one by one. 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 pressed against the first side plate 122. Thus, by forming a plurality of openings 2332, the deformation amount of the second sealing portion 233 is larger. When the sensor module 2 is assembled to the first side plate 122, the sealing lips 2331 can be closely attached to the first side plate 122 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 alternative embodiments, the other end of the sealing lip 2331 turns outwards compared with the one end of the sealing lip 2331. Here, the outwards turning can be understood as extending towards the side away from the center of the protective sleeve 23. In this way, when the sensor module 2 is installed, when the sealing lip 2331 contacts the first side plate 122, the sealing lip 2331 will deform towards 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. Thus, it can further avoid the oil flowing on the first side plate 122 from flowing onto the surface of the detection element 212 to a certain extent. Thus, the detection accuracy 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. Thus, the sensor module 2 and the first side plate 122 can be connected together by a detachable connection method. Specifically, the second housing portion 223 and the first side plate 122 are detachably connected. In this way, the assembly efficiency of the sensor module 2 provided in this embodiment is relatively 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 to repair or replace the circuit board 211 or the detection element 212.

[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 , Figure 9 This is a schematic diagram of the exploded structure of the housing assembly provided in an embodiment of the present application. Figure 10 for Figure 9 The enlarged schematic diagram of the local structure at C in the middle. Figure 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 Figures 12 to 14 , Figure 12 for Figure 11 Cross-sectional view along DD direction, Figure 13 for Figure 12 The enlarged schematic diagram of the local structure at E in the middle. Figure 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 enable the buckle portion 32 and the convex 2235 to be reliably clamped together, in some alternative embodiments, one end of the buckle portion 32 away from the main body portion 31 extends toward the side close to the convex 2235. Specifically, the buckle portion 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 portion 31, and the other end extends along the axial direction of the main body portion 31 and is connected to one end of the second clamping plate 323. The other end of the second clamping plate 323 extends toward the side close to the convex 2235, and the clamping hole 321 is arranged on the first clamping plate 322. In this way, during the engagement process of the buckle portion 32 and the convex 2235, the buckle portion 32 can exert a force on the convex 2235 so that the buckle portion 32 and the convex 2235 can be reliably clamped together.

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

[0095] Of course, when two buckle portions 32 are provided, two convexes 2235 should also be provided on the second housing portion 223, and one convex 2235 corresponds to one buckle portion 32.

[0096] During the process of clamping the engaging member 3 and the protective housing 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 convex 2235 and the buckle portion 32 can be effectively clamped, and to improve the assembly efficiency of the engaging member 3 connecting the sensor module 2 and the first side plate 122. In some alternative embodiments, two guiding convex portions 2236 are arranged on the second housing 2231, the convex 2235 is located between the two guiding convex portions 2236, and the opposite sides of the buckle portion 32 are respectively abutted against the two guiding convex portions 2236. In this way, during the process of clamping the engaging member 3 and the second housing portion 223, a guiding groove 2237 that slidably cooperates with one buckle portion 32 can be formed between the two guiding convex portions 2236 to guide the engaging member 3 during its movement, improving the connection efficiency and connection reliability between the engaging member 3 and the protective housing 22.

[0097] It can be understood that when convexes 2235 are provided on both opposite sides of the second housing 2231, two guiding convex portions 2236 should also be respectively provided on both opposite sides of the second housing 2231 so that one buckle portion 32 corresponds to two guiding convex portions 2236.

[0098] During the assembly process of the housing assembly 10, after the sensor module 2 is assembled, the first side plate 122 and the sensor module 2 are assembled together through the engaging member 3. Since the second housing portion 223 is the last part to be assembled during the assembly process of the sensor module 2, it is necessary to provide avoidance portions 236 on the body portion 231 that correspond one-to-one to the two buckle portions 32. Avoidance grooves 2361 are formed on the avoidance portions 236. After the buckle portion 32 is engaged with the corresponding convex 2235, it is located within the corresponding avoidance groove 2361. In this way, the buckle portion 32 can be avoided.

[0099] In order to avoid, to a certain extent, the influence of the setting of the engaging member 3 on the detection range of the detection element 212, in some alternative embodiments, a plurality of detection holes 311 are formed in the main body portion 31 at intervals, 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 all arc-shaped strip holes, and in the direction away from the detection hole 311 in the middle, the extension length of the detection hole 311 first increases and then decreases. In this way, it can be adapted to the detection range of the detection element 212, so that the detection accuracy and accuracy of the detection element 212 for TVOC in the environment are higher.

[0100] Before connecting the first side plate 122 and the protective housing 22 together through the engaging member 3, if the relative position between the first side plate 122 and the protective housing 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 housing 22 and the first side plate 122, and the positioning structure 4 is used to limit the relative position between the protective housing 22 and the first side plate 122. That is to say, before connecting the first side plate 122 and the protective housing 22 together through the engaging member 3, the first side plate 122 and the protective housing 22 can be aligned first through the positioning structure 4, that is, the first side plate 122 and the sensor module 2 are aligned through the positioning structure 4. After the alignment is completed, the first side plate 122 and the protective housing 22 are connected together through the engaging member 3.

[0101] Specifically, the positioning structure 4 includes a positioning convex portion 41 and a positioning notch 42. The positioning convex portion 41 is provided on the protective shell 22, and the positioning notch 42 is formed on the inner wall of the third through hole 1221. Among them, the positioning convex portion 41 is located within the positioning notch 42, and the positioning convex portion 41 and the inner wall of the positioning notch 42 enclose an avoidance hole 43 for the snap portion 32 to pass through. In this way, before connecting the first side plate 122 and the protective shell 22 through the engaging member 3, the first side plate 122 and the protective shell 22 can be aligned first through the cooperation of the positioning convex portion 41 and the positioning notch 42, that is, the first side plate 122 and the sensor module 2 are aligned. In this way, the assembly efficiency between the first side plate 122 and the sensor module 2 can be improved, and moreover, the installation position of the sensor module 2 is closer to the preset installation position, ensuring the detection accuracy of the detection element 212.

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

[0103] More specifically, there are two positioning convex portions 41, and the two positioning convex portions 41 are symmetrically arranged on the opposite sides of the first through hole 221 with respect to the central axis of the first through hole 221. Correspondingly, the positioning notches 42 are also arranged in two and are symmetrically arranged with respect to the central axis of the third through hole 1221. In this way, the stability of the sensor module 2 after installation is relatively strong.

[0104] Please refer to Figure 15 and Figure 16 , Figure 15 which is Figure 11 a cross-sectional view along the F-F direction, Figure 16 and Figure 15 is a schematic enlarged view of the local structure at G in . 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 snap portion 32. The groove 3221 has a side wall 3222 opposite to the main body portion 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 engaging member 3 and the first side plate 122. In this way, 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 portion 31 is located in the limiting groove 1222, and the end surface of the main body portion 31 facing away from the fastening portion 32 is in the same plane as the plate surface of the first side plate 122. In this way, even after the engaging member 3 is provided, it will not have a great impact on the appearance of the housing assembly 10, and the overall aesthetics of the housing assembly 10 can still be ensured; in addition, through the setting of the limiting groove 1222, the position of the engaging member 3 can be limited to a certain extent, so that the position of the engaging member 3 can be avoided from shifting during the operation of the range hood to a further extent, and the connection reliability between the first side plate 122 and the sensor module 2 is further improved.

[0106] Specifically, when assembling the sensor module 2 and the first side plate 122, first install the sensor unit 21 on the first housing portion 222, and then install the protective sleeve 23 so that the sleeved portion 234 is sleeved on the detection element 212. After that, install the second housing portion 223 and connect the second housing portion 223, the protective sleeve 23 and the first housing portion 222 together through fasteners to form the sensor module 2; then, through the cooperation between the positioning convex portion 41 and the positioning notch 42, the alignment between the sensor module 2 and the first side plate 122 is realized. Finally, the sensor module 2 and the first side plate 122 are connected together through the engaging member 3.

[0107] This embodiment also provides a range hood, including the housing assembly 10 in the above embodiment. Among them, the structure of the housing assembly 10 has been introduced in detail in the above embodiment and will not be elaborated here.

[0108] It should be noted that the range hood provided in this embodiment should also include components or modules such as a blower. 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, by adopting the housing assembly 10 in the above embodiment, enables the range hood provided in this embodiment to have better performance.

[0110] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is 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, wherein: 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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