Cooking fume hood and extractor hood

Abstract

The application discloses a smoke collecting hood and a range hood. The smoke collecting hood comprises a shell, a secondary fan module and a rectifier plate. The shell is provided with a main smoke inlet. The secondary fan module is arranged in the shell and has a starting state and a closing state. The rectifier plate is movably arranged in the shell and has a first state and a second state. The rectifier plate is adapted to switch to the first state when the secondary fan module is in the starting state, and is adapted to switch to the second state when the secondary fan module is in the closing state. The rectifier plate is adapted to open the inlet of the secondary fan module when in the first state. The rectifier plate is adapted to close the inlet of the secondary fan module when in the second state. When the secondary fan module is in the starting state, the rectifier plate needs to switch to the first state, so that the secondary fan module can strengthen the suction of flue gas. When the secondary fan module is in the closing state, the flue gas does not need to be strengthened, the rectifier plate can switch to the second state, so that the noise transmitted outward through the inlet of the secondary fan module is avoided, and the use comfort is improved.

Description

Technical Field

[0001] This application relates to the field of kitchen appliances, and in particular to a smoke hood and a range hood. Background Technology

[0002] A range hood consists of a frame and a smoke collection hood. The frame has a receiving cavity, which houses a fan module. The smoke collection hood has a smoke inlet. When the fan module is working, the smoke first enters the interior of the smoke collection hood through the smoke inlet, then enters the receiving cavity, and is finally exhausted by the fan module. To enhance smoke collection, a secondary fan module is often installed on the smoke collection hood to further improve smoke extraction. With technological advancements, it is necessary to improve range hoods with secondary fan modules to meet more user needs and enhance user comfort. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes a smoke hood.

[0004] To achieve the above objectives, this application discloses a smoke collection hood, the smoke collection hood comprising: In some embodiments of this application, the housing is provided with a main smoke inlet; A secondary fan module, located within the housing, has an on / off state; and A rectifier plate is movably disposed in the housing and has a first state and a second state. The rectifier plate is adapted to switch to the first state when the auxiliary fan module is in the start state and to switch to the second state when the auxiliary fan module is in the stop state. The rectifier plate is adapted to open the inlet of the auxiliary fan module when it is in the first state and to close the inlet of the auxiliary fan module when it is in the second state.

[0005] In some embodiments of this application, the rectifier plate is adapted to form a secondary smoke inlet communicating with the inlet of the secondary fan module between itself and the housing when switching to the first state. The rectifier plate is respectively provided on the left and right sides of the main smoke inlet so that the secondary smoke inlet is formed on the left and right sides of the main smoke inlet, and the secondary smoke inlet on the left and right sides is respectively provided with the secondary fan module.

[0006] In some embodiments of this application, when the rectifier plate is in the first state, the auxiliary smoke inlets are formed between the ends of the rectifier plates on the left and right sides that are far apart from each other and the housing.

[0007] In some embodiments of this application, when the rectifier plate is in the first state, a rectifier cavity is formed between the rectifier plate and the housing, the rectifier cavity is connected to the auxiliary smoke inlet, the inlet of the auxiliary fan module is connected to the rectifier cavity, and at least a portion of the rectifier plate is located in the open direction of the inlet of the auxiliary fan module.

[0008] In some embodiments of this application, the auxiliary fan module includes a wind turbine, the rotation axis of which intersects with the rectifier plate.

[0009] In some embodiments of this application, the rectifier plate is inclined away from the main smoke inlet, and the distance between it and the inlet of the auxiliary fan module gradually increases in the direction away from the main smoke inlet.

[0010] In some embodiments of this application, the ends of the left and right rectifier plates that are far apart from each other are designated as the first end. The first end is provided with a diverter plate, which protrudes from the first end relative to the secondary smoke inlet. The diverter plate and the rectifier plate form an angle of less than 180° between their sides facing the main smoke inlet.

[0011] In some embodiments of this application, the housing is provided with a smoke inlet chamber communicating with the main smoke inlet and an outlet communicating with the smoke inlet chamber. The auxiliary fan module includes a smoke guide duct to be adapted to discharge smoke through the outlet end of the smoke guide duct. At least a portion of the smoke guide duct extends from the smoke inlet chamber, and the outlet end of the smoke guide duct extends to the outlet. The smoke collection hood is adapted to be connected to the frame, and the outlet is adapted to communicate with the receiving cavity of the frame.

[0012] In some embodiments of this application, the discharge end of the smoke guide duct corresponding to the auxiliary smoke inlet on the left extends to the left side of the outlet, and the discharge end of the smoke guide duct corresponding to the auxiliary smoke inlet on the right extends to the right side of the outlet. And / or, the discharge end of the smoke guide duct and the opening direction of the discharge outlet are arranged in the same direction.

[0013] In some embodiments of this application, the rectifier plate is adapted to be located on the air inlet path of the auxiliary fan module and to block the inlet of the auxiliary fan module when in the second state.

[0014] In some embodiments of this application, the smoke hood further includes a motor disposed on the housing, the motor being connected to the rectifier plate to be adapted to control the movement of the rectifier plate to open and close the inlet of the auxiliary fan module.

[0015] In some embodiments of this application, the smoke hood further includes a sensor adapted to detect the amount of smoke, and the motor is adapted to control the movement of the rectifier plate based on the detection result of the sensor.

[0016] In some embodiments of this application, the rectifier plate is rotatably configured.

[0017] The second aspect of this application discloses a range hood, which includes the aforementioned smoke collection hood.

[0018] In some embodiments of this application, the range hood further includes a frame and a main fan module. The frame is connected to the smoke collection hood and has a receiving cavity. The main fan module is located in the receiving cavity. The receiving cavity is connected to the main smoke inlet and is adapted to receive the smoke discharged by the auxiliary fan module.

[0019] The technical solution of this application includes a rectifier plate that can switch between a first state and a second state. When the auxiliary fan module is in the start-up state, the rectifier plate needs to switch to the first state, which enables the auxiliary fan module to enhance the extraction of flue gas. When the auxiliary fan module is in the off state, there is no need to enhance the extraction of flue gas, and the rectifier plate can switch to the second state. This avoids the transmission of noise outward through the inlet of the auxiliary fan module, thereby reducing noise, improving user comfort, and meeting the user's comfort needs.

[0020] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 These are schematic diagrams of range hoods in some embodiments; Figure 2 This is a schematic diagram of a partial structure of the range hood in some embodiments; Figure 3 This is a cross-sectional view of the range hood in some embodiments; Figure 4 This is another cross-sectional view of the range hood in some embodiments; Figure 5 for Figure 4 A magnified view of a portion of the structure shown. Figure 6 This is a third sectional view of the range hood in some embodiments; Figure 7 for Figure 6 A magnified view of a portion of the structure shown. Figure 8 This is a fourth sectional view of the range hood in some embodiments; Figure 9 for Figure 8 A magnified view of a portion of the structure shown. Figure 10 This is a schematic diagram showing the rectifier plate in a first state in some embodiments; Figure 11 This is a schematic diagram showing the rectifier plate in a second state in some embodiments; Figure 12 This is a schematic diagram of a smoke hood in some embodiments.

[0023] Explanation of icon numbers: Smoke hood 1000, housing 1100, main smoke inlet 1110, smoke inlet chamber 1120, exhaust outlet 1130, cover plate 1140, auxiliary fan module 1200, auxiliary fan module inlet 1210, impeller 1220, smoke guide duct 1230, rectifier plate 1300, first end 1310, second end 1320, rectifier chamber 1330, auxiliary smoke inlet 1340, diverter plate 1400, frame 2000, accommodating cavity 2100, main fan module 2200.

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0029] The first aspect of this application discloses a smoke hood 1000, which, in some embodiments, is combined with Figures 1 to 5 as well as Figures 10 to 11 As shown, the smoke hood 1000 includes a housing 1100, a secondary fan module 1200, and a rectifier plate 1300. The housing 1100 is provided with a main smoke inlet 1110. The secondary fan module 1200 is disposed in the housing 1100 and has an on-state and a off-state. The rectifier plate 1300 is movably disposed in the housing 1100 and has a first state and a second state. The rectifier plate 1300 is adapted to switch to the first state when the secondary fan module 1200 is in the on-state, and is adapted to switch to the second state when the secondary fan module 1200 is in the off-state. The rectifier plate 1300 is adapted to open the inlet 1210 of the secondary fan module 1200 when it is in the first state, and is adapted to close the inlet 1210 of the secondary fan module 1200 when it is in the second state.

[0030] By incorporating a rectifier plate 1300, which can switch between a first state and a second state, the rectifier plate 1300 needs to switch to the first state when the auxiliary fan module 1200 is in the start-up state. This allows the auxiliary fan module 1200 to enhance the extraction of flue gas. When the auxiliary fan module 1200 is in the off state, there is no need to enhance the extraction of flue gas, and the rectifier plate 1300 can switch to the second state. This avoids the transmission of noise to the outside through the inlet 1210 of the auxiliary fan module 1200, thereby reducing noise, improving user comfort, and meeting the user's comfort needs.

[0031] The smoke collection hood 1000 is described in conjunction with the range hood. The range hood includes a frame 2000, a main fan module 2200, and a smoke collection hood 1000. The frame 2000 is a skeleton structure for installing the main fan module 2200. The frame 2000 has a cubic structure and an internal cavity 2100. The main fan module 2200 is installed in the cavity 2100. The inlet of the main fan module 2200 is connected to the cavity 2100. The outlet of the main fan module 2200 is exposed on the frame 2000 and connected to the external flue through a pipe. The smoke hood 1000 is a structure for collecting smoke. The smoke hood 1000 includes a housing 1100, which is provided with a main smoke inlet 1110, a smoke inlet chamber 1120 and an outlet 1130. The main smoke inlet 1110 and the smoke inlet chamber 1120 are connected, and the smoke inlet chamber 1120 and the outlet 1130 are connected. The smoke hood 1000 is connected to the frame 2000, and the receiving cavity 2100 and the outlet 1130 are connected. When the main fan module 2200 is working, the flue gas enters the smoke inlet chamber 1120 through the main smoke inlet 1110, then enters the receiving cavity 2100 through the outlet 1130, and finally is discharged to the outside through the main fan module 2200.

[0032] To enhance the extraction effect of flue gas, the fume hood 1000 also includes a secondary fan module 1200. The secondary fan module 1200 is located in the housing 1100 and has an on and off state. When it is necessary to strengthen the extraction of flue gas, the secondary fan module 1200 switches to the on state (at this time, the main fan module 2200 is also in the on state). Some flue gas enters the inlet chamber 1120 through the main inlet 1110 and then enters the receiving chamber 2100. Some flue gas is drawn in by the secondary fan module 1200 and discharged into the receiving chamber 2100.

[0033] In this embodiment, the smoke hood 1000 further includes a rectifier plate 1300, which is movably disposed on the housing 1100 and has a first state and a second state. The movement of the rectifier plate 1300 includes, but is not limited to, rotation and translation. The rectifier plate 1300 is adapted to switch to the first state when the auxiliary fan module 1200 is in the start state, and is adapted to switch to the second state when the auxiliary fan module 1200 is in the stop state. It can be understood that the state switching of the rectifier plate 1300 and the state switching of the auxiliary fan module 1200 can be performed synchronously or asynchronously.

[0034] When the rectifier plate 1300 is in the first state, the inlet 1210 of the auxiliary fan module 1200 is opened. This allows the auxiliary fan module 1200 to draw in flue gas through its inlet 1210, improving the flue gas extraction effect in conjunction with the main fan module 2200. When the rectifier plate 1300 is in the second state, the inlet 1210 of the auxiliary fan module 1200 is closed. Since the main fan module 2200 transmits noise outwards during operation, closing the inlet 1210 of the auxiliary fan module 1200 through the rectifier plate 1300 can, to some extent, prevent noise transmission from the inlet 1210 of the auxiliary fan module 1200, thus achieving noise reduction. For example, the outlet of the auxiliary fan module 1200 is connected to the accommodating cavity 2100 of the rack 2000. Since the main fan module 2200 is located in the accommodating cavity 2100, the noise generated by the main fan module 2200 will be transmitted through the auxiliary fan module 1200 and then transmitted outward through the inlet 1210 of the auxiliary fan module. The inlet 1210 of the auxiliary fan module 1200 is closed by the rectifier plate 1300, reducing some of the noise transmitted to the user's space.

[0035] In some embodiments of this application, combined with Figures 1 to 9 As shown, when the rectifier plate 1300 is switched to the first state, it is adapted to form a secondary smoke inlet 1340 between itself and the housing 1100, which communicates with the inlet 1210 of the secondary fan module 1200. The rectifier plate 1300 is provided on the left and right sides of the main smoke inlet 1110, so that the secondary smoke inlet 1340 is formed on the left and right sides of the main smoke inlet 1110. The secondary smoke inlet 1340 on the left and right sides is respectively provided with the secondary fan module 1200.

[0036] The orientation described in this article uses a range hood installed on a wall as an example. With the user standing in front of the range hood, the side of the range hood closest to the ground is considered bottom, and the side away from the ground is considered top. The side facing the user is front, and the side away from the user is back. The side corresponding to the user's left hand is left, and the side corresponding to the user's right hand is right. When the rectifier plate 1300 switches to its first state, a secondary smoke inlet 1340 is formed between it and the housing 1100. The secondary fan module 1200 draws smoke through the secondary smoke inlet 1340. By setting secondary smoke inlets 1340 on both the left and right sides of the main smoke inlet 1110, and each secondary smoke inlet 1340 corresponding to a secondary fan module 1200, the secondary smoke inlets 1340 are closer to the left and right edges of the smoke collection hood 1000 than the main smoke inlet 1110, strengthening the smoke extraction from the left and right edges of the smoke collection hood 1000 and reducing smoke leakage and escape. It can be understood that A being located on one side of B can mean that A is located on B and close to B, or that A is independent of B and located on one side of B.

[0037] The housing 1100 is provided with a smoke inlet chamber 1120 and a main smoke inlet 1110 communicating with the smoke inlet chamber 1120, and is also provided with an outlet 1130 communicating with the smoke inlet chamber 1120. The frame 2000 and the smoke hood 1000 are connected so that the receiving cavity 2100 of the frame 2000 and the outlet 1130 are connected. The main fan module 2200 is installed inside the frame 2000. When the main fan module 2200 is working, the flue gas enters the smoke inlet chamber 1120 through the main smoke inlet 1110 and then enters the smoke hood 1130. The suction effect of the main smoke inlet 1110 on the left and right sides of the accommodating cavity 2100 is relatively weak. Therefore, rectifier plates 1300 are respectively installed on the left and right sides of the main smoke inlet 1110. Thus, auxiliary smoke inlets 1340 can be formed on the left and right sides of the main smoke inlet 1110. Auxiliary fan modules 1200 are respectively installed on the left and right sides of the smoke inlet cavity 1120. The auxiliary fan modules 1200 can enhance the suction effect of the main smoke inlet 1110 on the left and right sides, and reduce the occurrence of smoke leakage and escape.

[0038] In some embodiments, combined with Figure 5 and Figure 7 As shown, when the rectifier plate 1300 is in the first state, the ends of the left and right rectifier plates 1300 that are far apart from each other and the housing 1100 respectively form auxiliary smoke inlets 1340.

[0039] Along the left-right direction, the ends of the left and right rectifier plates 1300 that are far apart from each other are defined as the first end 1310, and the ends that are close to each other are defined as the second end 1320. A secondary smoke inlet 1340 is formed between the first end 1310 and the housing 1100. By forming the secondary smoke inlet 1340 between the ends of the left and right rectifier plates 1300 that are far apart from each other and the housing 1100, the secondary smoke inlet 1340 is further away from the main smoke inlet 1110, thereby strengthening the suction of smoke near the left and right edges of the smoke hood 1000, and reducing the air intake interference between the main smoke inlet 1110 and the secondary smoke inlet 1340, which further helps to improve the suction of smoke.

[0040] In some embodiments, combined with Figures 4 to 7 As shown, when the rectifier plate 1300 is in the first state, a rectifier cavity 1330 is formed between the rectifier plate 1300 and the housing 1100. The rectifier cavity 1330 is connected to the auxiliary smoke inlet 1340. The inlet 1210 of the auxiliary fan module 1200 is connected to the rectifier cavity 1330. At least a portion of the rectifier plate 1300 is located in the open direction of the inlet 1210 of the auxiliary fan module 1200.

[0041] Since the ends of the left and right rectifier plates 1300 that are far apart from each other form auxiliary smoke inlets 1340 between them and the housing 1100, when at least a portion of the rectifier plate 1300 is located in the open direction of the inlet 1210 of the auxiliary fan module 1200 (e.g., the rectifier plate 1300 covers the inlet 1210 of the auxiliary fan module 1200 in the open direction of the inlet 1210 of the auxiliary fan module 1200), the auxiliary smoke inlet 1340 is farther away from the main smoke inlet 1110 than the inlet 1210 of the auxiliary fan module 1200. For example, the auxiliary smoke inlet 1340 on the left is more to the left than the inlet 1210 of the auxiliary fan module 1200 on the left, and the auxiliary smoke inlet 1340 on the right is more to the right than the inlet 1210 of the auxiliary fan module 1200 on the right. This further expands the range of smoke extraction. The smoke needs to enter the rectifier chamber 1330 from the auxiliary smoke inlet 1340 and then enter the inlet 1210 of the auxiliary fan module 1200. This has a stronger extraction effect on the smoke drifting from the left and right sides of the smoke hood 1000.

[0042] In some embodiments, combined with Figures 4 to 7 As shown, the auxiliary fan module 1200 includes a rotor 1220, the rotation axis of which intersects with the rectifier plate 1300. Since at least a portion of the rectifier plate 1300 is located in the open direction of the inlet 1210 of the auxiliary fan module 1200, the rotor 1220 can be observed through the inlet 1210 of the auxiliary fan module 1200. This simplifies the flow path between the inlet 1210 and the rotor 1220, helping to reduce the structural complexity of the auxiliary fan module 1200. For example, the rotor 1220 and the inlet 1210 of the auxiliary fan module 1200 can be coaxially arranged, with the rotor 1220 close to the inlet 1210 of the auxiliary fan module 1200.

[0043] In some embodiments, combined with Figures 4 to 9 As shown, the rectifier plate 1300 is inclined away from the main smoke inlet 1110, and the distance between it and the inlet 1210 of the auxiliary fan module 1200 gradually increases in the direction away from the main smoke inlet 1110.

[0044] Because rectifier plates 1300 are respectively installed on the left and right sides of the main smoke inlet 1110, the rectifier plates 1300 on both sides have a converging effect on the air intake of the main smoke inlet 1110. The rectifier plates 1300 are inclined away from the main smoke inlet 1110, and the distance between them and the inlet 1210 of the auxiliary fan module 1200 gradually increases in the direction away from the main smoke inlet 1110. This helps to expand the smoke-collecting range of the main smoke inlet 1110, thereby strengthening its smoke-collecting capacity. Furthermore, the inclined arrangement of the rectifier plates 1300 also guides the flue gas flowing towards the main smoke inlet 11110 and the inlet 1210 of the auxiliary fan module, reducing flow resistance.

[0045] In some embodiments, combined with Figure 8 and Figure 9 As shown, the ends of the left and right rectifier plates 1300 that are far apart from each other are the first end 1310. The first end 1310 is provided with a diverter plate 1400. The diverter plate 1400 protrudes from the first end 1310 relative to the auxiliary smoke inlet 1340, and the diverter plate 1400 and the rectifier plate 1300 on the side facing the main smoke inlet 1110 form an angle of less than 180°.

[0046] By setting up the diversion plate 1400, the diversion plate 1400 can separate the flue gas flowing to the auxiliary flue gas inlet 1340 and the flue gas flowing to the main flue gas inlet 1110, further reducing the mutual interference between the airflows and enhancing the suction effect of the main flue gas inlet 1110 and the auxiliary flue gas inlet 1340.

[0047] Combination Figures 1 to 5 as well as Figure 12 As shown, in some embodiments, the housing 1100 is provided with a smoke inlet chamber 1120 communicating with the main smoke inlet 1110, and an outlet 1130 communicating with the smoke inlet chamber 1120. The auxiliary fan module 1200 includes a smoke guide duct 1230 adapted to discharge smoke through the outlet end of the smoke guide duct 1230. At least a portion of the smoke guide duct 1230 extends from the smoke inlet chamber 1120, and the outlet end of the smoke guide duct 1230 extends to the outlet 1130. The smoke hood 1000 is adapted to be connected to the frame 2000, and the exhaust port 1130 is adapted to be connected to the receiving cavity 2100 of the frame 2000. The auxiliary smoke inlet 1340 on the left is located to the left of the exhaust port 1130, that is, the auxiliary smoke inlet 1340 on the left is further to the left of the exhaust port 1130. The auxiliary smoke inlet 1340 on the right is located to the right of the exhaust port 1130, that is, the auxiliary smoke inlet 1340 on the right is further to the right of the exhaust port 1130.

[0048] Specifically, a secondary fan module 1200 is provided on the left side of the smoke inlet chamber 1120 and a secondary fan module 1200 is provided on the right side of the smoke inlet chamber 1120. Taking the secondary fan module 1200 on the left side of the smoke inlet chamber 1120 as an example, the secondary fan module 1200 can be provided in the left part of the smoke inlet chamber 1120, or the secondary fan module 1200 can be independently located on the left side of the smoke inlet chamber 1120.

[0049] When the flue gas enters the inlet chamber 1120 through the autonomous inlet 1110, the flue gas flows toward the outlet 1130 and then enters the receiving cavity 2100 of the frame 2000. To avoid the flue gas discharged from the auxiliary fan module 1200 colliding with the flue gas entering the inlet chamber 1120 through the autonomous inlet 1110, which would increase noise, in this embodiment, the auxiliary fan module 1200 includes a smoke guide duct 1230. The auxiliary fan module 1200 discharges flue gas through the outlet end of the smoke guide duct 1230. The exhaust end of 30 forms the outlet of the auxiliary fan module 1200. At least a portion of the smoke guide duct 1230 extends into the smoke inlet chamber 1120, making full use of the internal space of the housing 1100. The exhaust end of the smoke guide duct 1230 extends to the exhaust outlet 1130. The flue gas discharged from the auxiliary fan module 1200 enters the receiving cavity 2100 of the frame 2000 from the exhaust outlet 1130, which helps to reduce the collision between the flue gas discharged from the auxiliary fan module 1200 and the flue gas entering the smoke inlet chamber 1120 from the autonomous smoke inlet 1110.

[0050] Optionally, the discharge end and the outlet 1130 of the smoke guide duct 1230 are arranged in the same direction. For example, the discharge end and the outlet 1130 of the smoke guide duct 1230 are both open upwards. In this way, the flow direction of the flue gas entering the smoke inlet 1110 into the smoke inlet chamber 1120 and being discharged through the outlet 1130 is the same as the flow direction of the flue gas discharged from the auxiliary fan module 1200, thereby minimizing flow resistance and suppressing noise caused by airflow collision.

[0051] Combination Figure 12 As shown, in some embodiments, the discharge end of the flue gas duct 1230 corresponding to the left auxiliary flue gas inlet 1340 extends to the left side of the outlet 1130, and the discharge end of the flue gas duct 1230 corresponding to the right auxiliary flue gas inlet 1340 extends to the right side of the outlet 1130, thus minimizing the impact on the exhaust gas from the outlet 1130. Furthermore, the flue gas discharged from the flue gas duct 1230 is closer to the inner wall of the frame 2000, which helps to eliminate vortices formed on the inner wall of the frame 2000.

[0052] In some embodiments, combined with Figure 10 and Figure 11 As shown, the rectifier plate 1300 is adapted to be located on the air intake path of the auxiliary fan module 1200 and block the inlet 1210 of the auxiliary fan module 1200 when in the second state, so as to close the inlet 1210 of the auxiliary fan module 1200. This arrangement helps to simplify the cooperation structure between the rectifier plate 1300 and the auxiliary fan module 1200. Furthermore, by blocking the inlet 1210 of the auxiliary fan module 1200 by the rectifier plate 1300, the auxiliary fan module 1200 is prevented from being exposed. The rectifier plate 1300, together with the rest of the housing 1100, ensures the appearance integrity of the range hood and meets the personalized needs of users.

[0053] Switching between the first and second states of the rectifier plate 1300 can be achieved by manually applying force to the rectifier plate 1300, but this is somewhat cumbersome. Therefore, in this embodiment, the smoke hood 1000 also includes a motor located in the housing 1100. The motor is connected to the rectifier plate 1300 to control the movement of the rectifier plate 1300 to open and close the inlet 1210 of the auxiliary fan module 1200. Through the motor configuration and based on the range hood's programming, the rectifier plate 1300 can operate automatically / intelligently, improving the user experience. The so-called program can be understood as the control logic that enables the current device to operate normally; the program can be set according to actual needs.

[0054] Optionally, the smoke hood 1000 also includes a sensor suitable for detecting the amount of smoke, and a motor is adapted to control the movement of the rectifier plate 1300 based on the sensor's detection result. The sensor is used to detect the amount of smoke, such as a smoke sensor. When the data detected by the sensor is greater than a preset threshold, the auxiliary fan module 1200 needs to strengthen the suction, so the rectifier plate 1300 needs to be controlled to switch to the first state. When the data detected by the sensor is less than the preset threshold, the auxiliary fan module 1200 does not need to be started, and the rectifier plate 1300 switches to the second state.

[0055] For example, a range hood includes a main control board, which is electrically connected to a motor and a sensor. The results detected by the sensor are sent to the main control board, which outputs a control signal to the motor based on the detection results. When the detection result is greater than a preset threshold, the motor drives the rectifier board 1300 to switch to the first state and controls the auxiliary fan module 1200 to start to enhance the extraction of smoke. When the detection result is less than the preset threshold, the motor drives the rectifier board 1300 to switch to the second state and controls the auxiliary fan module 1200 to shut down.

[0056] In some embodiments, the rectifier plate 1300 is rotatably configured. That is, the rectifier plate 1300 switches between the first state and the second state in a rotatable manner. The rotatable form is more conducive to saving space and simplifying the structure.

[0057] For example, the housing 1100 includes a cover plate 1140 located on the front side, the cover plate 1140 covers the smoke inlet chamber 1120, the cover plate 1140 is provided with a main smoke inlet 1110, the inlet 1210 of the auxiliary fan module 1200 is exposed on the cover plate 1140, the second end 1320 of the rectifier plate 1300 is rotatably connected to the cover plate 1140, when the rectifier plate 1300 is switched to the first state, an auxiliary smoke inlet 1340 is formed between the first end 1310 of the rectifier plate 1300 and the cover plate 1140, when the rectifier plate 1300 is switched to the second state, the first end 1310 of the rectifier plate 1300 contacts the cover plate 1140, thus blocking the inlet 1210 of the auxiliary fan module 1200.

[0058] This application also discloses a range hood, which in some embodiments combines... Figures 1 to 12 As shown, the range hood includes the aforementioned smoke collection hood 1000. The smoke collection hood 1000 includes a housing 1100, a secondary fan module 1200, and a rectifier plate 1300. The housing 1100 is provided with a main smoke inlet 1110. The secondary fan module 1200 is disposed in the housing 1100 and has an on state and an off state. The rectifier plate 1300 is movably disposed in the housing 1100 and has a first state and a second state. The rectifier plate 1300 is adapted to switch to the first state when the secondary fan module 1200 is in the on state, and is adapted to switch to the second state when the secondary fan module 1200 is in the off state. The rectifier plate 1300 is adapted to open the inlet 1210 of the secondary fan module 1200 when it is in the first state, and is adapted to close the inlet 1210 of the secondary fan module 1200 when it is in the second state.

[0059] By incorporating a rectifier plate 1300, which can switch between a first state and a second state, when the auxiliary fan module 1200 is in the start-up state, the rectifier plate 1300 needs to switch to the first state. This allows the auxiliary fan module 1200 to enhance the extraction of smoke. When the auxiliary fan module 1200 is in the off state, there is no need to enhance the extraction of smoke, and the rectifier plate 1300 can switch to the second state. This avoids the transmission of noise through the inlet 1210 of the auxiliary fan module 1200, thus reducing noise, improving user comfort, and meeting the user's comfort needs. It is understood that the smoke collection hood 1000 of the range hood in this embodiment adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0060] In some embodiments, the range hood further includes a frame 2000 and a main fan module 2200. The frame 2000 is connected to the smoke hood 1000 and has a receiving cavity 2100. The main fan module 2200 is disposed in the receiving cavity 2100, which is connected to the main smoke inlet 1110 and adapted to receive the smoke discharged from the auxiliary fan module 1200. Specifically, the receiving cavity 2100 is formed inside the frame 2000, the main fan module 2200 is installed in the receiving cavity 2100, the inlet of the main fan module 2200 is connected to the receiving cavity 2100, and the outlet of the main fan module 2200 is exposed outside the frame 2000 and connected to the external flue through a pipe. The smoke hood 1000 includes a housing 1100, which is provided with a main smoke inlet 1110, a smoke inlet chamber 1120, and an outlet 1130. The main smoke inlet 1110 is connected to the smoke inlet chamber 1120, the smoke inlet chamber 1120 is connected to the outlet 1130, and the outlet 1130 is connected to the accommodating cavity 2100. When the main fan module 2200 is working, some flue gas enters the smoke inlet chamber 1120 through the main smoke inlet 1110 and then enters the accommodating cavity 2100 through the outlet 1130. When the auxiliary fan module 1200 is working, some flue gas is drawn by the auxiliary fan module 1200 and discharged toward the accommodating cavity 2100. The flue gas entering the accommodating cavity 2100 is finally discharged to the outside through the main fan module 2200. Optionally, the range hood is a side-draft range hood, with the main smoke inlet 1110 opening downwards and forwards to facilitate the extraction of smoke from the lower front, and the secondary smoke inlet 1340 opening downwards and forwards to facilitate the extraction of smoke from the lower front.

[0061] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A smoke hood (1000), characterized in that, The smoke hood (1000) includes: The housing (1100) is provided with a main smoke inlet (1110); A secondary fan module (1200), disposed in the housing (1100), has an on / off state; and A rectifier plate (1300) is movably disposed in the housing (1100) and has a first state and a second state. The rectifier plate (1300) is adapted to switch to the first state when the auxiliary fan module (1200) is in the start state, and is adapted to switch to the second state when the auxiliary fan module (1200) is in the stop state. The rectifier plate (1300) is adapted to open the inlet (1210) of the auxiliary fan module when it is in the first state, and the rectifier plate (1300) is adapted to close the inlet (1210) of the auxiliary fan module when it is in the second state.

2. The smoke hood (1000) as described in claim 1, characterized in that, The rectifier plate (1300) is adapted to form a secondary smoke inlet (1340) communicating with the inlet (1210) of the secondary fan module between itself and the housing (1100) when switched to the first state. The rectifier plate (1300) is provided on the left and right sides of the main smoke inlet (1110) respectively, so that the secondary smoke inlet (1340) is formed on the left and right sides of the main smoke inlet (1110), and the secondary smoke inlet (1340) on the left and right sides is respectively provided with the secondary fan module (1200).

3. The smoke hood (1000) as described in claim 2, characterized in that, When the rectifier plate (1300) is in the first state, the auxiliary smoke inlet (1340) is formed between the ends of the left and right rectifier plates (1300) that are far apart from each other and the housing (1100).

4. The smoke hood (1000) as described in claim 3, characterized in that, When the rectifier plate (1300) is in the first state, a rectifier cavity (1330) is formed between the rectifier plate (1300) and the housing (1100), the rectifier cavity (1330) is connected to the auxiliary smoke inlet (1340), the inlet (1210) of the auxiliary fan module is connected to the rectifier cavity (1330), and at least a portion of the rectifier plate (1300) is located in the open direction of the inlet (1210) of the auxiliary fan module.

5. The smoke hood (1000) as described in claim 4, characterized in that, The auxiliary fan module (1200) includes a wind turbine (1220), the rotation axis of which intersects with the rectifier plate (1300).

6. The smoke hood (1000) as described in claim 4, characterized in that, The rectifier plate (1300) is inclined away from the main smoke inlet (1110), and the distance between it and the inlet (1210) of the auxiliary fan module gradually increases in the direction away from the main smoke inlet (1110).

7. The smoke hood (1000) as described in claim 6, characterized in that, The ends of the rectifier plates (1300) on the left and right sides that are far apart from each other are designated as the first end (1310). The first end (1310) is provided with a diverter plate (1400). The diverter plate (1400) protrudes from the first end (1310) relative to the secondary smoke inlet (1340), and the diverter plate (1400) and the rectifier plate (1300) form an angle of less than 180° between their sides facing the main smoke inlet (1110).

8. The smoke hood (1000) as described in claim 2, characterized in that, The housing (1100) is provided with a smoke inlet chamber (1120) communicating with the main smoke inlet (1110) and an outlet (1130) communicating with the smoke inlet chamber (1120). The auxiliary fan module (1200) includes a smoke guide duct (1230) adapted to discharge smoke through the outlet end of the smoke guide duct (1230). At least a portion of the smoke guide duct (1230) extends from the smoke inlet chamber (1120), and the outlet end of the smoke guide duct (1230) extends to the outlet (1130). The smoke collection hood (1000) is adapted to be connected to the frame (2000), and the outlet (1130) is adapted to communicate with the receiving cavity (2100) of the frame (2000).

9. The smoke hood (1000) as described in claim 8, characterized in that, The exhaust end of the smoke guide duct (1230) corresponding to the auxiliary smoke inlet (1340) on the left extends to the left side of the exhaust outlet (1130), and the exhaust end of the smoke guide duct (1230) corresponding to the auxiliary smoke inlet (1340) on the right extends to the right side of the exhaust outlet (1130). And / or, the discharge end of the smoke duct (1230) and the opening direction of the discharge outlet (1130) are arranged in the same direction.

10. The smoke hood (1000) as described in claim 1, characterized in that, The rectifier plate (1300) is adapted to be located on the air intake path of the auxiliary fan module (1200) and to block the inlet (1210) of the auxiliary fan module when in the second state.

11. The smoke hood (1000) as described in claim 1, characterized in that, The smoke hood (1000) also includes a motor disposed on the housing (1100), the motor being connected to the rectifier plate (1300) to control the movement of the rectifier plate (1300) to open and close the inlet (1210) of the auxiliary fan module.

12. The smoke hood (1000) as described in claim 11, characterized in that, The smoke hood (1000) also includes a sensor suitable for detecting the amount of smoke, and the motor is adapted to control the movement of the rectifier plate (1300) according to the detection result of the sensor.

13. The smoke hood (1000) as described in claim 1, characterized in that, The rectifier plate (1300) is rotatably mounted.

14. A range hood, characterized in that, The range hood includes the smoke collection hood (1000) as described in any one of claims 1 to 13.

15. The range hood as described in claim 14, characterized in that, The range hood also includes a frame (2000) and a main fan module (2200). The frame (2000) is connected to the smoke hood (1000) and has a receiving cavity (2100). The main fan module (2200) is located in the receiving cavity (2100). The receiving cavity (2100) is connected to the main smoke inlet (1110) and is adapted to receive the smoke discharged by the auxiliary fan module (1200).

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