Range hood

Abstract

The utility model relates to a range hood which comprises an outer shell, a smoke exhaust pipe and a smoke exhaust valve seat, a smoke exhaust inner cavity is formed in the outer shell, and an air passing opening is formed in the top wall of the outer shell; a smoke exhaust cavity communicating with the smoke suction inner cavity is formed in the smoke exhaust pipe, and the upper end and the lower end of the smoke exhaust cavity communicate with the air passing opening and the smoke suction inner cavity correspondingly. The smoke exhaust valve set comprises a valve seat piece and a partition piece, the valve seat piece is detachably connected to the outer shell, and a limiting part and a stop part which extend into the valve cavity are formed on the valve seat piece; the blocking piece is connected into the valve cavity through the rotating part, the stopping part is located above the blocking piece so as to limit the maximum upward overturning angle of the blocking piece, and the limiting part is located below the blocking piece and used for supporting the blocking piece; the smoke exhaust valve bank is simple in structure and low in design and manufacturing cost, structures with high failure rate such as reset springs do not need to be arranged, the number of parts is reduced, the assembly difficulty is lowered, and the installation and maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric equipment technical field, especially, relate to a range hood. BACKGROUND

[0002] The range hood is a kind of kitchen appliance for purifying kitchen environment, and has become essential appliance in kitchen now, and the range hood can improve kitchen environment health, and is beneficial to user's health.

[0003] The range hood is usually installed above kitchen stove, and the waste of stove combustion and the oil fume harmful to human body generated in cooking process are rapidly drawn and discharged outdoor, and oil fume suction is reduced.

[0004] In order to prevent oil fume backflow in public flue in use environment, smoke exhaust valve group is usually installed on the range hood, and the traditional smoke exhaust valve group includes valve seat, blocking piece, baffle pivot and reset spring and other components, so as to cause the structure of the whole smoke exhaust valve group to be complex, manufacturing and assembly cost to be relatively high, and failure rate to be large, which is not convenient for maintenance and maintenance. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a range hood to solve the problems of complex structure of smoke exhaust valve group in prior art range hood, high manufacturing and assembly cost, high failure rate of reset structure such as spring in it and high maintenance cost.

[0006] In order to realize the utility model purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a range hood, which comprises:

[0008] Shell body, which is formed with smoke suction inner cavity, and the top wall of the shell body is formed with air passage;

[0009] Smoke exhaust pipe, which is connected with the shell body, and the smoke exhaust pipe is formed with smoke exhaust cavity, and the upper and lower ends of the smoke exhaust cavity are communicated with the air passage and the smoke suction inner cavity respectively;

[0010] Smoke exhaust valve group, which is connected on the air passage and is used for controlling the opening and closing of the air passage, and the smoke exhaust valve group comprises:

[0011] Valve seat piece, which is detachably connected on the circumferential side of the air passage, and the middle of the valve seat piece is formed with valve cavity, and the valve seat piece is formed with limiting portion and stop portion extending into the valve cavity;

[0012] The stop piece is provided with a rotating part at a first end, the stop piece is connected in the valve cavity through the rotating part, the stop part is located above the stop piece to limit the maximum overturning angle of the stop piece upward, and the limiting part is located below the stop piece to support the stop piece.

[0013] In some embodiments of the application, the valve seat piece includes a first valve seat and a second valve seat, the first valve seat and the second valve seat are oppositely arranged, the limiting part is formed on the first valve seat, and the stop part is formed on the second valve seat.

[0014] In some embodiments of the application, both ends of the first valve seat are formed with first bending parts extending to the second valve seat, both ends of the second valve seat are formed with second bending parts extending to the first valve seat, and the first bending parts and the second bending parts are overlapped.

[0015] In some embodiments of the application, the limiting part includes at least one inner bend formed on the first valve seat and extending into the valve cavity.

[0016] In some embodiments of the application, the stop part includes at least one inner bend formed on the second valve seat and extending into the valve cavity.

[0017] In some embodiments of the application, the lower edge of the first valve seat and the lower edge of the second valve seat are each formed with a fixed part facing away from the valve cavity, the fixed part is formed with a fastening hole, and a fastener passes through the corresponding fastening hole to fix the valve seat piece on the top wall of the outer shell.

[0018] In some embodiments of the application, the valve seat piece is provided with a connecting hole, the rotating part is rotatably connected in the connecting hole, and the rotating part is integrally formed with the stop piece.

[0019] In some embodiments of the application, the stop piece is formed with a reinforcing rib, and the reinforcing rib is a convex part formed on the surface of the stop piece and extending to the smoke exhaust cavity.

[0020] In some embodiments of the application, the rotating part extends to both sides of the stop piece corresponding to the reinforcing rib, and the outer peripheral surface of the reinforcing rib is arc-shaped.

[0021] In some embodiments of the application, the size of the stop piece is not less than the size of the air passage, a fan is arranged in the smoke exhaust cavity, an input end of the fan is communicated with the smoke suction inner cavity, and an output end of the fan is communicated with the valve cavity.

[0022] Compared with the prior art, the application has the advantages and positive effects that:

[0023] The oil fume exhauster relates to an oil fume exhauster, a valve seat piece of a smoke exhaust valve group arranged on the oil fume exhauster is provided with a limiting part and a stop part, the limiting part is located below a blocking part, under the action of no external force, the blocking part is in contact with the limiting part under the action of its own gravity, and is supported through the limiting part, when the blocking part is turned upward as a rotating center of the rotating part under the pushing of the smoke flow, the blocking part is separated from the limiting part, and until the blocking part is turned upward to be in contact with the stop part located above the blocking part, and the maximum turning angle of the blocking part is limited through the stop part.

[0024] The smoke exhaust valve group has simple structure, low design and manufacturing cost, and does not need to be provided with a reset spring and other structures with high failure rate, the number of components is reduced, assembly difficulty is reduced, and installation and maintenance cost is low.

[0025] Other characteristics and advantages of the present application will become more apparent after reading the specific embodiments of the present application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other accompanying drawings can also be obtained by those skilled in the art without creative labor under the premise of the accompanying drawings.

[0027] Figure 1 is a whole structure diagram of an embodiment of the oil fume exhauster proposed in the present application;

[0028] Figure 2 is a cutaway schematic view of the oil fume exhauster;

[0029] Figure 3 is a structure schematic view of the smoke exhaust valve group;

[0030] Figure 4 is a plane schematic view of the smoke exhaust valve seat;

[0031] Figure 5 is Figure 4 A-A sectional view in the smoke exhaust valve seat;

[0032] Figure 6 is a disassembled schematic view of the smoke exhaust valve seat;

[0033] Figure 7 is a structure schematic view of the valve seat piece;

[0034] Figure 8 is a structure schematic view of the blocking part;

[0035] Figure 9 is an end surface schematic view of the blocking part;

[0036] In the drawings,

[0037] 100, outer housing; 110, top wall;

[0038] 200, smoke exhaust pipe;

[0039] 300, smoke exhaust valve group;

[0040] 310, valve seat piece; 311, first valve seat; 3111, first bent portion; 312, second valve seat; 3121, second bent portion; 3122, connecting hole; 313, fixed portion;

[0041] 320, blocking piece; 3201, first end; 3202, second end; 321, rotating portion; 322, reinforcing rib;

[0042] 330, limiting portion;

[0043] 340, stop portion. DETAILED DESCRIPTION

[0044] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] It should be noted that, in the description of the present application, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating the direction or positional relationship of the terms are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature is "on", "above" and "on top of" the second feature, which includes the first feature being directly above and obliquely above the second feature, or only indicating that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "underneath" the second feature, which includes the first feature being directly below and obliquely below the second feature, or only indicating that the first feature is lower than the second feature in horizontal height.

[0048] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0049] Reference Figure 1 , Figure 2 The application provides an oil fume machine, which comprises a shell body 100, an exhaust pipe 200 and an exhaust valve group 300, the shell body 100 is located above a cooking bench and is connected with a wall body at the back side, an inner smoke extraction cavity is formed in the shell body 100, and an air inlet is formed on the upper portion of the shell body 100 and communicates with the inner smoke extraction cavity.

[0050] The exhaust pipe 200 is connected to the inner portion of the shell body 100, an exhaust cavity is formed in the exhaust pipe 200 and communicates with the inner smoke extraction cavity, a fan is arranged in the inner smoke extraction cavity, an output end of the fan communicates with the exhaust cavity, and the fan is used for forming an air flow, so that flue gas is input from the air inlet into the inner smoke extraction cavity and is output from the outer connecting pipe through the exhaust pipe 200.

[0051] An air passing opening is arranged on the top wall 110 of the shell body 110, the exhaust pipe 200 is located in the inner smoke extraction cavity, the bottom portion of the exhaust pipe communicates with the inner smoke extraction cavity, and the top portion of the exhaust pipe is connected with the air passing opening and is used for flue gas output.

[0052] The exhaust valve group 300 is arranged on the air passing opening and is used for controlling the opening and closing of the air passing opening, the exhaust valve group 300 comprises a valve seat 310 and a blocking piece 320, the valve seat 310 is detachably connected to the circumferential side of the air passing opening, and the blocking piece 320 is connected to the valve seat 310 and is used for controlling the opening and closing of the air passing opening.

[0053] ReferenceFigures 3-6 Specifically, the valve seat member 310 has a valve cavity formed in the middle thereof, and the valve seat member 310 is specifically a frame structure, and the valve cavity is a channel formed through the middle of the valve seat member 310, and the valve seat member 310 is formed with a limiting portion 330 and a stop portion 340 extending into the valve cavity.

[0054] Correspondingly, the blocking member 320 is also a rectangular valve piece structure, and the size of the blocking member 320 is not less than the air passage to ensure that the air passage is completely blocked when no flue gas passes through.

[0055] The blocking member 320 is formed with a first end 3201 and a second end 3202, and the first end 3201 is arranged opposite to the second end 3202, and the first end 3201 of the blocking member 320 is rotatably connected to the valve seat member 310, and the second end 3202 of the blocking member 320 is a free end and can be flipped up and down at an angle relative to the first end 3201.

[0056] The second end 3202 of the blocking member 320 is provided with a rotating portion 321, and the blocking member 320 is rotatably connected in the valve cavity through the rotating portion 321.

[0057] Specifically, the rotating portion 321 is formed on both sides of the second end 3202 of the blocking member 320 and extends outward, and the corresponding position of the valve seat member 310 is provided with a connecting hole 3122, and the rotating portion 321 is rotatably connected in the connecting hole 3122.

[0058] The stop portion 340 is located above the blocking member 320 to limit the maximum flipping angle of the blocking member 320 upward, and the limiting portion 330 is located below the blocking member 320 to support the blocking member 320.

[0059] Specifically, under the action of no external force, the blocking member 320 is in contact with the limiting portion 330 under the action of its own gravity, and the air passage is blocked by the limiting portion 330 to prevent the flue gas downstream of the flue gas valve group 300 from flowing back.

[0060] When the fan is started, the blocking member 320 is flipped upward with the rotating portion 321 as the rotating shaft under the pushing of the airflow, and the blocking member 320 is separated from the limiting portion 330 until the blocking member 320 is flipped upward to contact the stop portion 340 located above the blocking member 320, and the maximum flipping angle of the blocking member 320 is limited by the stop portion 340.

[0061] The flue gas valve group 300 has a simple structure, low design and manufacturing cost, does not need to be provided with a reset spring and other structures with high failure rate, the number of components is reduced, the assembly difficulty is reduced, and the installation and maintenance cost is low.

[0062] Reference Figure 6 , Figure 7In some embodiments of the present application, in order to facilitate processing, the valve seat member 310 comprises a first valve seat 311 and a second valve seat 312, the first valve seat 311 and the second valve seat 312 are oppositely arranged, the limiting portion 330 is formed on the first valve seat 311, and the stop portion 340 is formed on the second valve seat 312.

[0063] In some embodiments of the present application, both ends of the first valve seat 311 are formed with first bending portions 3111 extending towards the second valve seat 312, both ends of the second valve seat 312 are formed with second bending portions 3121 extending towards the first valve seat 311, and the first bending portions 3111 and the second bending portions 3121 are overlapped.

[0064] In other embodiments, the first valve seat 311 or the second valve seat 312 can also be designed in a straight plate shape, and L-shaped side bends are formed on both sides of the second valve seat 312 or the first valve seat 311, so as to realize the mutual overlapping of the first valve seat 311 and the second valve seat 312.

[0065] The limiting portion 330 is specifically located on the first valve seat 311 close to the first end 3201 of the blocking member 320.

[0066] The limiting portion 330 comprises at least one inner bend formed on the first valve seat 311 and extending into the valve cavity.

[0067] That is, the limiting portion 330 is formed by bending part of the first valve seat 311 upwards towards the valve cavity.

[0068] In some embodiments of the present application, the limiting portion 330 comprises a plurality of inner bends arranged at intervals on the first valve seat 311.

[0069] The stop portion 340 comprises at least one inner bend formed on the second valve seat 312 and extending into the valve cavity.

[0070] Specifically, in order to improve the limiting effect on the blocking member 320, the stop portion 340 comprises a plurality of inner bends arranged at intervals on the first valve seat 311.

[0071] The valve seat member 310 is detachably connected to the top wall of the outer housing 110 by a fastener, and specifically, the lower edges of the first valve seat 311 and the second valve seat 312 are each formed with a fixing portion 313 facing away from the valve cavity, the fixing portion 313 is formed with a fastening hole, and the fastener passes through the corresponding fastening hole to fix the valve seat member 310 on the outer housing 110.

[0072] In order to improve the stability of the connection, the present application also provides a fixing portion 313 at the bottom of the first bending portion 3111 and the second bending portion 3121, so as to firmly fix the peripheral side of the valve seat member 310.

[0073] ReferenceFigure 8 、 Figure 9 In order to facilitate processing and installation, the rotating part 321 is integrally formed with the blocking part 320.

[0074] Specifically, the blocking part 320 is formed with a reinforcing rib 322, and the reinforcing rib 322 is a convex part formed on the surface of the blocking part 320 and extending towards the smoke exhaust cavity.

[0075] The rotating part 321 extends to both sides of the blocking part 320 corresponding to the reinforcing rib 322, and the outer circumferential surface of the reinforcing rib 322 is arc-shaped to ensure smooth rotation of the blocking part 320.

[0076] In some embodiments of the present application, in order to avoid the air inlet end of the fan being blocked by the side wall of the smoke exhaust cavity, the fan is detachably connected in the smoke exhaust cavity at an angle through the support assembly, and the side of the smoke exhaust pipe 200 away from the wall is the front wall, and the air inlet end faces the front wall.

[0077] That is, the air inlet end of the fan is located on the side surface, and the air outlet end is located on the top.

[0078] The input end of the fan is in communication with the smoke extraction inner cavity, and the output end of the fan is in communication with the valve cavity.

[0079] In the installed state, a certain distance is formed between the bottom of the fan and the front wall, and the top of the fan is inclined towards the front wall to form an air inlet gap between the air inlet end of the fan and the front wall.

[0080] The upper portion of the outer shell 100 is provided with an outlet of the smoke extraction inner cavity, and the outlet is in communication with the smoke exhaust cavity, so that the oil stains in the smoke extraction inner cavity are output from the outlet to the smoke exhaust cavity along the airflow, and enter the fan from the air inlet end of the fan, and are output from the air outlet end to the external pipeline downstream of the smoke exhaust cavity.

[0081] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, for those skilled in the art, the technical solutions recorded in the foregoing examples can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A range hood characterized by, The oil fume extractor comprises: an outer casing, in which an inner fume extraction cavity is formed, and a top wall of the outer casing is provided with a fume passing opening; a fume discharging pipe connected with the outer casing, in which a fume discharging cavity is formed, and upper and lower ends of the fume discharging cavity are communicated with the fume passing opening and the inner fume extraction cavity respectively; a fume discharging valve group connected with the fume passing opening, used for controlling opening and closing of the fume passing opening, and comprising: a valve seat member detachably connected with a peripheral side of the fume passing opening, in which a valve cavity is formed in the middle, and a limiting part and a stop part extending into the valve cavity are formed on the valve seat member; a stop member provided with a rotating part at a first end, and connected with the valve cavity through the rotating part, and the stop part is located above the stop member to limit a maximum turning angle of the stop member upwardly, and the limiting part is located below the stop member to support the stop member.

2. The oil fume extractor according to claim 1, wherein: the valve seat member comprises a first valve seat and a second valve seat, and the first valve seat and the second valve seat are oppositely arranged, the limiting part is formed on the first valve seat, and the stop part is formed on the second valve seat.

3. The oil fume extractor according to claim 2, wherein: both ends of the first valve seat are provided with first bending parts extending toward the second valve seat, both ends of the second valve seat are provided with second bending parts extending toward the first valve seat, and the first bending parts and the second bending parts are overlapped.

4. The oil fume extractor according to claim 2, wherein: the limiting part comprises at least one inner bending part formed on the first valve seat and extending into the valve cavity.

5. The oil fume extractor according to claim 2, wherein: the stop part comprises at least one inner bending part formed on the second valve seat and extending into the valve cavity.

6. The oil fume extractor according to claim 2, wherein: lower edges of the first valve seat and the second valve seat are all provided with fixed parts away from the valve cavity, the fixed parts are provided with fastening holes, and fastening members pass through the corresponding fastening holes to fix the valve seat member on the top wall of the outer casing.

7. The oil fume extractor according to claim 1, wherein: the valve seat member is provided with a connecting hole, the rotating part is rotatably connected in the connecting hole, and the rotating part is integrally formed with the stop member.

8. The oil fume extractor according to claim 7, wherein: the stop member is provided with a reinforcing rib, and the reinforcing rib is a convex part formed on a surface of the stop member and extending toward the fume discharging cavity.

9. The oil fume extractor according to claim 8, wherein: the rotating part extends to both sides of the stop member corresponding to the reinforcing rib, and an outer peripheral surface of the reinforcing rib is in a circular arc shape.

10. The oil fume extractor according to claim 1, wherein: a size of the stop member is not less than a size of the fume passing opening, a fan is arranged in the fume discharging cavity, an input end of the fan is communicated with the inner fume extraction cavity, and an output end of the fan is communicated with the valve cavity.

Images