Self-cleaning range hood

Abstract

The utility model relates to the technical field of range hoods, in particular to a self-cleaning range hood. The self-cleaning range hood comprises a volute, a sealing assembly and a liquid inlet pipe, the volute is provided with a cavity, an impeller capable of rotating is installed in the cavity, and a first liquid outlet is formed in the bottom of the volute; the sealing assembly comprises a rotating rod and a first sealing plug, the rotating rod is connected with the first sealing plug, and the rotating rod is rotationally connected with the bottom of the volute; one end of the liquid inlet pipe extends into a cavity in the volute, and liquid can be introduced into the cavity; and the sealing assembly is configured to rotate in response to liquid introduced into the liquid inlet pipe, so that the first sealing plug moves towards the first liquid outlet to block the first liquid outlet. The self-cleaning range hood has the advantages that the liquid inlet pipe can introduce liquid into the cavity and can also drive the sealing assembly to move, so that a mechanism for driving the sealing assembly to move does not need to be additionally arranged, the self-cleaning range hood is simpler in structure, more stable in operation and durable in use, and the processing and material cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a self-cleaning range hood. Background Art

[0002] Since the range hood is in an oily fume environment for a long time, oily fume and dirt are easily attached to the surface of its impeller, and the impeller needs to be cleaned frequently.

[0003] Existing self-cleaning range hoods introduce cleaning liquid into the volute and accumulate the cleaning liquid at the bottom of the volute. When the impeller rotates, the cleaning liquid at the bottom of the volute is stirred for cleaning. However, since this cleaning method requires the cleaning liquid inside the volute to be discharged after cleaning, a liquid outlet needs to be opened at the bottom of the volute. Generally, self-cleaning range hoods use electric mechanisms such as solenoid valves to close and open the liquid outlet, which has a simple structure, and oil smoke, dirt and cleaning liquid can easily affect the working stability and service life of the electric mechanism. Utility Model Content

[0004] Based on this, the utility model provides a self-cleaning range hood to solve the above technical problems.

[0005] A self-cleaning range hood, the self-cleaning range hood comprising: a volute, the volute being configured with a cavity, a first liquid outlet being provided at the bottom of the volute; a sealing assembly comprising a rotating rod and a first sealing plug, the rotating rod being rotatably connected to the volute, the first sealing plug being mounted on the rotating rod and being capable of rotating with the rotating rod; a liquid inlet pipe, one end of the liquid inlet pipe extending into the cavity in the volute for introducing liquid into the cavity; wherein the sealing assembly is configured to be rotatable in response to the introduction of liquid through the liquid inlet pipe, so that the first sealing plug moves toward the first liquid outlet to block the first liquid outlet.

[0006] In this configuration, the volute is used to install an impeller, which draws the oil smoke outside the range hood into the volute and finally guides it out from the air outlet. The rotating rod is located at the bottom of the volute, close to the first liquid outlet which is also opened at the bottom of the volute, and is driven to move by the connection with the first sealing plug, so that it can block or open the first liquid outlet. Moreover, since the sealing assembly can rotate in response to the liquid introduced by the liquid inlet pipe, the liquid inlet pipe can not only introduce liquid (cleaner in this embodiment) into the cavity, but also drive the sealing assembly to move. Therefore, there is no need to set up an additional mechanism to drive the sealing assembly to move, which makes the self-cleaning range hood simpler in structure, more stable in operation and more durable, and reduces processing and material costs.

[0007] In one embodiment, the sealing assembly also includes a transmission rod and a liquid holding cup. The liquid holding cup is located between the first sealing plug and the pipe mouth of the liquid inlet pipe, and can carry liquid entering the cavity from the liquid inlet pipe. One end of the transmission rod is connected to the first sealing plug, and the other end is connected to the liquid holding cup. The liquid holding cup can drive the first sealing plug to move through the transmission rod.

[0008] In one embodiment, a second liquid outlet is further opened at the bottom of the volute, and the sealing assembly also includes a second sealing plug, the first sealing plug and the second sealing plug are respectively connected to the two ends of the rotating rod, and one of the first sealing plugs is located in the cavity and the other is located outside the cavity, and as the rotating rod rotates, the first sealing plug can block the first liquid outlet, and the second sealing plug can block the second liquid outlet.

[0009] In one embodiment, the self-cleaning range hood further includes a rotating seat, the inner wall of the volute forming the cavity is an inner wall, the rotating seat is connected to the outer wall of the volute, and the rotating seat is connected to the position between the two ends of the rotating rod.

[0010] In one embodiment, the first sealing plug is located in the cavity, and the second sealing plug is located at the lower side of the volute. When the liquid cup is in a liquid-free state, the torque at one end of the first sealing plug is smaller than the torque at one end of the second sealing plug.

[0011] In one embodiment, the liquid holding cup, the transmission rod and the first sealing plug are coaxially arranged.

[0012] In one embodiment, the self-cleaning range hood further includes a driving member, which is connected to the liquid inlet pipe and can drive the liquid in the liquid inlet pipe.

[0013] In one embodiment, the self-cleaning range hood further includes a water storage box, the water storage box is connected to the driving member, and the driving member is located between the water storage box and the liquid inlet pipe.

[0014] In one embodiment, the driving member is configured as a bidirectional drive pump.

[0015] In one embodiment, the self-cleaning range hood further includes an oil box, which is located on the outside of the volute and is connected to the first liquid outlet; alternatively, a second liquid outlet is further provided at the bottom of the volute, and both the first liquid outlet and the second liquid outlet are connected to the oil box.

[0016] Compared with the prior art, the utility model increases the discharge speed of the volute for the cleaning liquid by opening a first liquid outlet and a second liquid outlet at the bottom of the volute. A rotating rod is arranged at the bottom of the volute, and a first sealing plug and a second sealing plug are arranged at both ends of the rotating rod, so that when the rotating rod rotates, it can drive the first sealing plug to seal the first liquid outlet, and at the same time, the second sealing plug seals the second liquid outlet. Moreover, since the sealing assembly can rotate in response to the liquid introduced by the liquid inlet pipe, the liquid inlet pipe can not only introduce liquid into the cavity, but also drive the sealing assembly to move, so there is no need to set up an additional mechanism to drive the sealing assembly to move, so that the structure of the self-cleaning range hood is simpler, the operation is more stable and durable, and the processing and material costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A partial structural schematic diagram of one embodiment of the self-cleaning range hood provided by the utility model;

[0018] Figure 2 A partial structural schematic diagram of one embodiment of the self-cleaning range hood provided by the utility model;

[0019] Figure 3 A partial structural schematic diagram of one embodiment of the self-cleaning range hood provided by the utility model;

[0020] Figure 4 A schematic diagram of the self-cleaning range hood provided by the utility model in a non-self-cleaning mode;

[0021] Figure 5 This is a schematic diagram of the self-cleaning range hood provided by the utility model in the self-cleaning mode.

[0022] The symbols in the figure mean the following:

[0023] 100. Self-cleaning range hood; 10. Volute; 11. Impeller; 12. First liquid outlet; 13. Second liquid outlet; 14. Rotating seat; 15. Cavity; 20. Sealing assembly; 21. Rotating rod; 22. First sealing plug; 23. Second sealing plug; 24. Transmission rod; 25. Liquid cup; 30. Liquid inlet pipe; 40. Water storage box; 50. Driving member; 60. Oil box. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0029] Existing self-cleaning range hoods introduce cleaning liquid into the volute and accumulate the cleaning liquid at the bottom of the volute. When the impeller rotates, the cleaning liquid at the bottom of the volute is stirred for cleaning. However, since this cleaning method requires the cleaning liquid inside the volute to be discharged after cleaning, a liquid outlet needs to be opened at the bottom of the volute. Generally, self-cleaning range hoods use electric mechanisms such as solenoid valves to close and open the liquid outlet, which has a simple structure, and oil smoke, dirt and cleaning liquid can easily affect the working stability and service life of the electric mechanism.

[0030] To address this, the present application provides a self-cleaning range hood 100 that can open or close a first liquid inlet and a second liquid inlet on a volute 10 without an additional driving mechanism, and has a simple, stable and durable structure.

[0031] See also Figure 1-Figure 5 The self-cleaning range hood 100 includes a volute 10, a sealing assembly 20 and a liquid inlet pipe 30. The volute 10 is configured with a cavity 15, and a rotatable impeller 11 is installed in the cavity 15. The bottom of the volute 10 is provided with a first liquid outlet 12. The sealing assembly 20 includes a rotating rod 21 and a first sealing plug 22. The rotating rod 21 is rotatably connected to the volute 10. The first sealing plug 22 is installed on the rotating rod 21 and can rotate with the rotating rod 21. One end of the liquid inlet pipe 30 extends into the cavity 15 in the volute 10 for passing liquid into the cavity 15. The sealing assembly 20 is configured to rotate in response to the liquid passing through the liquid inlet pipe 30, so that the first sealing plug 22 moves toward the first liquid outlet 12 to block the first liquid outlet 12. In this way, the cavity 15 in the volute 10 is used to install the impeller 11, and the impeller 11 sucks the oil smoke outside the range hood into the volute 10 and finally guides it out from the air outlet. The rotating rod 21 is located at the bottom of the volute 10, close to the first liquid outlet 12 which is also opened at the bottom of the volute 10, and is driven to move by connecting with the first sealing plug 22, so that it can block or open the first liquid outlet 12. Moreover, since the sealing assembly 20 can rotate in response to the liquid introduced by the liquid inlet pipe 30, the liquid inlet pipe 30 can not only introduce liquid (in this embodiment, detergent) into the cavity 15, but also drive the sealing assembly 20 to move. Therefore, there is no need to set up an additional mechanism to drive the sealing assembly 20 to move, so that the structure of the self-cleaning range hood 100 is simpler, the operation is more stable and durable, and the processing and material costs are reduced.

[0032] Furthermore, the sealing assembly 20 further includes a transmission rod 24 and a liquid cup 25. The liquid cup 25 is located between the first sealing plug 22 and the pipe opening of the liquid inlet pipe 30, and can carry the liquid entering the cavity 15 from the liquid inlet pipe 30. One end of the transmission rod 24 is connected to the first sealing plug 22, and the other end is connected to the liquid cup 25. The liquid cup 25 can drive the first sealing plug 22 to move through the transmission rod 24. In this way, after the liquid is introduced into the cavity 15 from the liquid inlet pipe 30, the liquid can be carried by the liquid cup 25. As the liquid continues to enter, the mass of the liquid cup 25 becomes larger and larger, thereby driving the first sealing plug 22 to move downward through the transmission rod 24, and finally making the first sealing plug 22 block the first liquid outlet 12.

[0033] It can be understood that in other embodiments, the sealing assembly 20 may not be provided with the transmission rod 24 and the liquid cup 25, but a groove facing the pipe mouth of the liquid inlet pipe 30 is directly opened on the first sealing plug 22. When the liquid enters the cavity 15 from the liquid inlet pipe 30, it will fall into the groove on the first sealing plug 22. Therefore, the mass of the first sealing plug 22 will also increase with the entry of liquid, and move downward to block the first liquid outlet 12.

[0034] In this embodiment, the liquid cup 25, the transmission rod 24 and the first sealing plug 22 are coaxially arranged, so that when the liquid cup 25 drives the first sealing plug 22 to move downward through the transmission rod 24, the force transmission path is smoother and the movement is more stable.

[0035] Furthermore, a second liquid outlet 13 is provided at the bottom of the volute 10, and the second liquid outlet 13 and the first liquid outlet 12 can discharge the liquid in the cavity 15 to the outside at the same time, so that the self-cleaning range hood 100 has a higher liquid discharge speed and a higher self-cleaning efficiency.

[0036] The sealing assembly 20 also includes a second sealing plug 23. The first sealing plug 22 and the second sealing plug 23 are respectively connected to the two ends of the rotating rod 21, and one of the first sealing plug 22 and the second sealing plug 23 is located in the cavity 15, and the other is located outside the cavity 15. With the rotation of the rotating rod 21, the first sealing plug 22 can block the first liquid outlet 12, and the second sealing plug 23 can block the second liquid outlet 13. In this way, the rotation of the rotating rod 21 can drive the first sealing plug 22 and the second sealing plug 23 at the same time, the structure is simple and efficient, and one of the first sealing plug 22 and the second sealing plug 23 is located in the cavity 15, and the other is located outside the cavity 15, so the two can cooperate with the two liquid outlets on the volute 10 from two directions, and the sealing effect is tighter.

[0037] The self-cleaning range hood 100 further includes a rotating seat 14. The inner wall of the volute 10 forming the cavity 15 is the inner wall. The rotating seat 14 is connected to the outer wall of the volute 10. The rotating seat 14 is connected to the position between the two ends of the rotating rod 21. In this way, the rotating seat 14 can form a lever structure with the rotating rod 21. As the rotating rod 21 rotates, one end of the rotating rod 21 moves upward and the other end moves downward, thereby achieving the first sealing plug 22 to block the first liquid outlet 12, and at the same time, the second sealing plug 23 can also block the second liquid outlet 13.

[0038] Of course, in other embodiments, the rotating seat 14 can also be set on the inner wall of the volute 10, and the rotating rod 21 can also be rotatably connected to the rotating seat 14 to form a lever structure, and the first sealing plug 22 and the second sealing plug 23 can also achieve simultaneous sealing of the two liquid outlets on the volute 10.

[0039] See also Figure 4-Figure 5 Specifically, the first sealing plug 22 is located in the cavity 15, and the second sealing plug 23 is located at the lower side of the volute 10. When the liquid cup 25 is in a liquid-free state, the torque at one end of the first sealing plug 22 is smaller than the torque at one end of the second sealing plug 23. In this way, when there is no liquid in the liquid cup 25, its mass is small, and the torque at one end of the second sealing plug 23 is greater than that at one end of the first sealing plug 22. The second sealing plug 23 is located at the lower side of the volute 10, which means that the second sealing plug 23 has a downward movement tendency (that is, moving in a direction away from the second liquid outlet 13). Due to the existence of the rotating rod 21, the first sealing plug 22 will remain in the initial position in the cavity 15 and cannot rotate toward the first liquid outlet 12. When the liquid enters the liquid cup 25 from the liquid inlet, the mass of the liquid cup 25 gradually increases, and the torque at one end of the first sealing plug 22 gradually increases, thereby rotating the rotating rod 21.

[0040] It should be explained that the mass of the first sealing plug 22 is defined as m1, the mass of the second sealing plug 232 is defined as m2, the mass of the liquid cup 25 in the liquid-free state is defined as m3, the mass in the liquid-filled state is defined as m4, and the mass of the transmission rod 24 is defined as m5. The force arm between the first sealing plug 22 and the connection position between the rotating rod 21 and the rotating seat 14 is defined as L1, and the force arm between the second sealing plug 23 and the connection position between the rotating rod 21 and the rotating seat 14 is defined as L2. Therefore, when the self-cleaning function is not performed, m2*g*L2>(m2+m3+m5)*g*L2. When the self-cleaning function is performed, the sealing device satisfies m2*g*L2<(m2+m3+m5)*g*L2.

[0041] The self-cleaning range hood 100 further includes a driving member 50, which is in communication with the liquid inlet pipe 30 and can drive the liquid in the liquid inlet pipe 30. The driving member 50 can improve the automation level of the self-cleaning range hood 100 and make the self-cleaning process of the self-cleaning range hood 100 more intelligent. The other end of the driving member 50 is connected to the water storage tank 40, and the driving member 50 can extract liquid from the water storage tank 40.

[0042] Exemplarily, the driving member 50 is configured as a bidirectional driving pump, so the liquid inlet pipe 30 can both input liquid into the cavity 15 and suck liquid out of the cavity 15. Taking the liquid holding cup 25 of this embodiment as an example, the liquid inlet pipe 30 extends into the liquid holding cup 25. When the bidirectional driving pump is driven in the reverse direction to suck out the liquid in the liquid holding cup 25, the mass of the liquid holding cup 25 is reduced accordingly, so the torque on one side of the liquid holding cup 25 is reduced accordingly, the rotating rod 21 rotates, opens the first liquid outlet 12 and the second liquid outlet 13, and discharges the cleaning liquid, and automatically switches from the self-cleaning mode to the non-self-cleaning mode, further optimizing the automation process of the self-cleaning range hood 100.

[0043] The self-cleaning range hood 100 further includes an oil box 60, which is located outside the volute 10 and communicates with the first liquid outlet 12; or, the bottom of the volute 10 is further provided with a second liquid outlet 13, and both the first liquid outlet 12 and the second liquid outlet 13 are communicated with the oil box 60. In this way, the oil box 60 can store detergent, which is convenient for the user to clean the self-cleaning range hood 100.

[0044] Compared with the prior art, the utility model increases the discharge speed of the volute 10 for the cleaning liquid by opening the first liquid outlet 12 and the second liquid outlet 13 at the bottom of the volute 10. The rotating rod 21 is set at the bottom of the volute 10, and the first sealing plug 22 and the second sealing plug 23 are set at both ends of the rotating rod 21, so that the rotating rod 21 can drive the first sealing plug 22 to seal the first liquid outlet 12 when rotating, and the second sealing plug 23 seals the second liquid outlet 13. Moreover, since the sealing assembly 20 can rotate in response to the liquid introduced by the liquid inlet pipe 30, the liquid inlet pipe 30 can not only introduce liquid into the cavity 15, but also drive the sealing assembly 20 to move, so there is no need to set up an additional mechanism to drive the sealing assembly 20 to move, so that the structure of the self-cleaning range hood 100 is simpler, the operation is more stable and durable, and the processing and material costs are reduced.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A self-cleaning range hood, characterized in that: The self-cleaning range hood comprises: A volute (10), wherein the volute (10) is provided with a cavity (15), and a first liquid outlet (12) is provided at the bottom of the volute (10); A sealing assembly (20), comprising a rotating rod (21) and a first sealing plug (22), wherein the rotating rod (21) is rotatably connected to the volute (10), and the first sealing plug (22) is mounted on the rotating rod (21) and can rotate along with the rotating rod (21); a liquid inlet pipe (30), one end of which extends into the cavity (15) in the volute (10) and is used for introducing liquid into the cavity (15); The sealing assembly (20) is configured to rotate in response to liquid entering the liquid inlet pipe (30), so that the first sealing plug (22) moves toward the first liquid outlet (12) and blocks the first liquid outlet (12).

2. The self-cleaning range hood according to claim 1, characterized in that: The sealing assembly (20) further comprises a transmission rod (24) and a liquid holding cup (25); the liquid holding cup (25) is located between the first sealing plug (22) and the pipe mouth of the liquid inlet pipe (30), and is capable of carrying liquid entering the cavity (15) from the liquid inlet pipe (30); one end of the transmission rod (24) is connected to the first sealing plug (22), and the other end is connected to the liquid holding cup (25); the liquid holding cup (25) is capable of driving the first sealing plug (22) to move via the transmission rod (24).

3. The self-cleaning range hood according to claim 2, characterized in that: The bottom of the volute (10) is also provided with a second liquid outlet (13), and the sealing assembly (20) further comprises a second sealing plug (23), wherein the first sealing plug (22) and the second sealing plug (23) are respectively connected to two ends of the rotating rod (21), and one of the first sealing plugs (22) is located in the cavity (15), and the other is located outside the cavity (15); as the rotating rod (21) rotates, the first sealing plug (22) can block the first liquid outlet (12), and the second sealing plug (23) can block the second liquid outlet (13).

4. The self-cleaning range hood according to claim 3, characterized in that: The self-cleaning range hood further comprises a rotating seat (14), the inner wall of the volute (10) forming the cavity (15) is an inner wall, the rotating seat (14) is connected to the outer wall of the volute (10), and the rotating seat (14) is connected to the position between the two ends of the rotating rod (21).

5. The self-cleaning range hood according to claim 4, characterized in that: The first sealing plug (22) is located in the cavity (15), and the second sealing plug (23) is located at the lower side of the volute (10). When the liquid holding cup (25) is in a liquid-free state, the torque at one end of the first sealing plug (22) is smaller than the torque at one end of the second sealing plug (23).

6. The self-cleaning range hood according to claim 2, characterized in that: The liquid holding cup (25), the transmission rod (24) and the first sealing plug (22) are coaxially arranged.

7. The self-cleaning range hood according to claim 1, characterized in that: The self-cleaning range hood further comprises a driving member (50), wherein the driving member (50) is in communication with the liquid inlet pipe (30) and is capable of driving the liquid in the liquid inlet pipe (30).

8. The self-cleaning range hood according to claim 7, characterized in that: The self-cleaning range hood further comprises a water storage box (40), the water storage box (40) being in communication with the driving member (50), and the driving member (50) being located between the water storage box (40) and the liquid inlet pipe (30).

9. The self-cleaning range hood according to claim 7, characterized in that: The driving member (50) is configured as a bidirectional driving pump.

10. The self-cleaning range hood according to claim 1, characterized in that: The self-cleaning range hood further comprises an oil box (60), wherein the oil box (60) is located outside the volute (10) and is in communication with the first liquid outlet (12); alternatively, a second liquid outlet (13) is further provided at the bottom of the volute (10), and both the first liquid outlet (12) and the second liquid outlet (13) are in communication with the oil box (60).

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