Oil way structure and lifting range hood

Abstract

The utility model provides an oil way structure and a lifting range hood, and relates to the technical field of kitchen appliances, the oil way structure comprises a fixed outer shell and a movable inner shell which are in sliding connection, and the movable inner shell is provided with a smoke inlet; the movable inner shell can ascend and descend relative to the fixed outer shell so that the vertical position of the smoke inlet can be adjusted. The oil way structure further comprises a box body, a lifting driving module and a connecting arm. The box body is connected with the fixed shell. The lifting driving module is positioned in the box body and is provided with a liftable movable part; a mounting groove is formed in the side wall of the box body, a first elastic sealing piece is arranged in the mounting groove, and an opening which extends in the vertical direction and is communicated with the interior and the exterior of the box body is formed in the first elastic sealing piece; the connecting arm penetrates through the opening and is respectively connected with the movable part and the movable inner shell; in the width direction of the opening, the distance between the two opposite side walls of the connecting arm is larger than or equal to the width of the opening.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an oil circuit structure and a lifting hood. Background Art

[0002] At present, many methods are used to improve the smoke extraction effect of range hoods on the market. One of them is to make the smoke inlet movable. When not cooking, the smoke inlet is hidden inside the cavity. When cooking, the smoke inlet moves, making the smoke inlet closer to the smoke source, sucking away the oil smoke, thereby improving the smoke extraction effect.

[0003] But it also brings a problem. When the smoke inlet assembly is descending, a screw motor is generally used as the power source, and the guide rails on both sides slide to rise and fall. During the cooking process, the screw and the guide rail surface come into contact with the smoke, forming condensed oil accumulation. When cooking is finished, the oil solidifies through condensation, which can easily cause the screw to be blocked by solidified oil stains or impurities and cannot be transmitted. Utility Model Content

[0004] The utility model aims to provide an oil circuit structure and a lifting hood to alleviate the technical problem that the screw rod of the existing lifting hood is easily contaminated.

[0005] In a first aspect, the utility model provides an oil circuit structure, comprising: a fixed outer shell and a movable inner shell connected in a sliding manner, wherein the movable inner shell is provided with a smoke inlet; the movable inner shell can be raised and lowered relative to the fixed outer shell, so that the vertical position of the smoke inlet is adjustable;

[0006] The oil circuit structure also includes a box body, a lifting drive module and a connecting arm, wherein the box body is connected to the fixed shell; the lifting drive module is located in the box body, and the lifting drive module has a movable part that can be lifted and lowered;

[0007] An installation groove is arranged on the side wall of the box body, a first elastic seal is arranged in the installation groove, and an opening extending vertically and connecting the inside and outside of the box body is arranged on the first elastic seal; a connecting arm passes through the opening, and the connecting arm is respectively connected to the movable part and the movable inner shell; in the width direction of the opening, the distance between the opposite side walls of the connecting arm is greater than or equal to the width of the opening.

[0008] Furthermore, first elastic sealing members are disposed on opposite side walls of the box body; the connecting arm includes an opposite first end and a second end, and the movable portion is connected to a position between the first end and the second end;

[0009] The first end and the second end respectively pass through the openings on the two first elastic sealing members and are connected to the movable inner shell.

[0010] Furthermore, the movable part is provided with a plug-in unit for connecting with the connecting arm;

[0011] The connecting arm is provided with a connecting hole, a second elastic sealing member is provided in the connecting hole, a plug hole is provided on the second elastic sealing member, and the plug hole is plugged with the plug-in member.

[0012] Furthermore, a flange is provided at the inner edge of the connecting hole, and a slot is provided on the second elastic sealing member, and the slot is plugged into the flange.

[0013] Furthermore, a connecting foot is provided on the second elastic sealing member, and the connecting foot includes a connecting column and a limiting head located at the plug-in end of the connecting column, and the diameter of the limiting head is greater than the diameter of the connecting column;

[0014] A limiting hole is arranged on the connecting arm, and the diameter of the limiting hole is smaller than or equal to the diameter of the limiting head, so that the limiting head stops at one side of the connecting arm after passing through the limiting hole under the action of external force.

[0015] Furthermore, the lifting drive module includes a screw motor, and a transmission block of the screw motor forms a movable part.

[0016] Furthermore, the screw motor includes a housing and a base, the base is connected to the bottom opening of the housing, and an oil retaining edge is provided on the upper surface of the base to prevent oil from flowing to the connection gap between the housing and the base;

[0017] The base is also provided with an oil leakage hole, which is located on the inner side of the oil retaining edge.

[0018] Furthermore, the screw motor also includes a screw, and a boss located inside the oil retaining edge is arranged on the base, a positioning hole is arranged on the top surface of the boss, and the lower end of the screw is inserted into the positioning hole.

[0019] Furthermore, the back side of the box body is open and faces the back plate of the fixed shell; the back plate of the fixed shell is connected to the box body and closes the opening.

[0020] In a second aspect, the utility model provides a lifting range hood including the above-mentioned oil circuit structure.

[0021] The utility model has at least the following advantages or beneficial effects:

[0022] The oil circuit structure provided by the utility model comprises: a fixed outer shell and a movable inner shell which are slidably connected, and a smoke inlet is arranged on the movable inner shell; the movable inner shell can be lifted and lowered relative to the fixed outer shell so that the vertical position of the smoke inlet is adjustable; the oil circuit structure also comprises a box body, a lifting drive module and a connecting arm, and the box body is connected with the fixed outer shell; the lifting drive module is located in the box body, and the lifting drive module has a movable part which can be lifted and lowered; a mounting groove is arranged on the side wall of the box body, and a first elastic sealing member is arranged in the mounting groove, and an opening which extends vertically and connects the inside and outside of the box body is arranged on the first elastic sealing member; the connecting arm passes through the opening, and the connecting arm is respectively connected with the movable part and the movable inner shell; in the width direction of the opening, the distance between the opposite side walls of the connecting arm is greater than or equal to the width of the opening.

[0023] During the lifting and lowering process of the movable inner shell, the connecting arm connected to the movable inner shell slides at the opening of the first elastic seal. Since the distance between the opposite side walls of the connecting arm is greater than or equal to the width of the opening, the opening of the first elastic seal can clamp the connecting arm. When the connecting arm passes through the position, the opening is stretched open. As the connecting arm moves away, the previously stretched position gradually closes. Therefore, the entry of oil into the box body can be reduced as much as possible.

[0024] The lifting hood provided by the utility model includes the above-mentioned oil circuit structure. Since the lifting hood provided by the utility model adopts the above-mentioned oil circuit structure, the lifting hood provided by the utility model also has the advantages of the oil circuit structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the oil circuit structure provided by an embodiment of the utility model (the movable inner shell is hidden);

[0027] Figure 2 for Figure 1 A partial enlarged view of position A in the middle;

[0028] Figure 3 A schematic diagram of the oil circuit structure provided by an embodiment of the utility model (the movable inner shell is exposed);

[0029] Figure 4 A side view of the oil circuit structure provided by an embodiment of the utility model (the movable inner shell is exposed);

[0030] Figure 5 A top view of the oil circuit structure provided by an embodiment of the utility model;

[0031] Figure 6 A schematic diagram of a first elastic seal of the oil circuit structure provided by an embodiment of the utility model;

[0032] Figure 7 A cross-sectional view of a first elastic seal and a connecting arm of the oil circuit structure provided by an embodiment of the utility model;

[0033] Figure 8 A schematic diagram of a screw motor with an oil circuit structure provided in an embodiment of the utility model;

[0034] Fig. 9 A bottom view of a screw motor with an oil circuit structure provided by an embodiment of the utility model;

[0035] Fig.10 A schematic diagram of the bottom of the screw rod of the oil circuit structure provided by the embodiment of the utility model;

[0036] Fig.11 A schematic diagram of a second elastic seal of the oil circuit structure provided by an embodiment of the utility model;

[0037] Fig.12 A cross-sectional view of the second elastic seal of the oil circuit structure provided in an embodiment of the utility model.

[0038] Icon: 100 - fixed housing;

[0039] 200 - movable inner shell; 210 - smoke inlet;

[0040] 310 - box body; 320 - lifting drive module; 321 - plug-in; 330 - connecting arm; 331 - flange;

[0041] 410 - first elastic seal; 411 - opening; 412 - strip groove; 420 - second elastic seal; 421 - plug hole; 422 - slot; 423 - limit head;

[0042] 510 - base; 520 - oil leakage hole; 530 - oil retaining edge; 540 - positioning hole; 550 - housing;

[0043] 600-slide rail assembly; 700-support frame. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] like Figure 1 , Figure 3 - Figure 5 As shown, the oil circuit structure provided by the utility model includes: a fixed outer shell 100 and a movable inner shell 200 which are slidably connected, and a smoke inlet 210 is arranged on the movable inner shell 200; the movable inner shell 200 can be raised and lowered relative to the fixed outer shell 100 so that the vertical position of the smoke inlet 210 is adjustable.

[0051] The fixed outer shell 100 is fixed on the wall of the kitchen, and the movable inner shell 200 can be slidably connected to the fixed outer shell 100 through the slide rail assembly 600. By lifting and lowering the movable inner shell 200, the position of the smoke inlet 210 can be changed to adapt to different cooking scenes.

[0052] like Figure 2As shown, the oil circuit structure also includes a box body 310, a lifting drive module 320 and a connecting arm 330. The box body 310 is connected to the fixed shell 100; the lifting drive module 320 is located in the box body 310, and the lifting drive module 320 has a movable part that can be lifted and lowered.

[0053] The box body 310 can be a sealed box with six flat surfaces; or a sealed box with five flat surfaces and an open back surface. Then, the open surface of the box body 310 is assembled with the back plate of the fixed housing 100 to form a sealed box with six sealed surfaces. The lifting module can be a screw motor. In other feasible solutions, other conventional linear modules are also applicable to the structure, such as a gear rack module. The lifting module is completely located in the box body 310 and is protected by the box body 310, thereby reducing the pollution of the lifting module by oil.

[0054] like Figure 2 , Figure 6 and Figure 7 As shown, a mounting groove is provided on the side wall of the box body 310, and a first elastic seal 410 is provided in the mounting groove. The first elastic seal 410 is provided with an opening 411 extending vertically and connecting the inside and outside of the box body 310; the connecting arm 330 passes through the opening 411, one end of the connecting arm 330 is connected to the movable part, and the other end is connected to the movable inner shell 200; in the width direction of the opening 411, the distance between the opposite side walls of the connecting arm 330 is greater than or equal to the width of the opening 411.

[0055] In this embodiment, Figure 6 and Figure 7 As shown, the mounting groove is arranged on the left and right side walls of the box body 310, in a strip shape, extending in the up-down direction, and the appearance of the first elastic seal 410 is consistent with the appearance of the mounting groove, so that the first elastic seal 410 is installed in the mounting groove. Further, the openings 411 can be respectively arranged on the opposite side walls of the first elastic seal 410 to face the opposite strip grooves 412, and the strip grooves 412 also extend vertically, and the two opposite groove walls of the mounting groove are respectively inserted into the two strip grooves 412, so as to realize the connection between the first elastic seal 410 and the mounting groove. In the width direction of the opening 411, the distance between the opposite side walls of the connecting arm 330 is greater than or equal to the width of the opening 411, that is, the opening 411 and the connecting arm 330 are interference fit.

[0056] In this embodiment, first elastic seals 410 are disposed on opposite side walls of the box body 310; the connecting arm 330 includes opposite first and second ends, and the movable portion is connected to a position between the first and second ends, which is approximately the middle position of the connecting arm 330. The first and second ends respectively pass through openings 411 on the two first elastic seals 410 and are connected to the movable inner shell 200, so that the movement of the movable inner shell 200 is more stable.

[0057] Of course, in other feasible solutions, a mounting groove may be opened on only one of the side walls of the box body 310 and the first elastic sealing member 410 may be installed thereon, and the connecting arm 330 may extend from the first elastic sealing member 410 .

[0058] like Fig.11 and Fig.12 As shown, the movable part is provided with a plug-in 321 for connecting with the connecting arm 330; the connecting arm 330 is provided with a connecting hole, in which a second elastic sealing member 420 is provided, and the second elastic sealing member 420 is provided with a plug-in 421, which is plugged with the plug-in 321.

[0059] The plug-in 321 may be convex, and the plug-in 321 protrudes from the front to the back. The connection hole on the connection arm 330 is approximately located in the middle thereof. The second elastic seal 420 and the first elastic seal 410 may both be made of rubber. During installation, the second elastic seal 420 is first installed into the connection hole, and then the plug-in 321 is inserted into the insertion hole 421 on the second elastic seal 420. The second elastic seal 420 forms a buffer, which reduces the noise between the connection arm 330 and the plug-in 321 when the lifting module moves.

[0060] A flange 331 is provided at the inner edge of the connection hole, and a slot 422 is provided on the second elastic sealing member 420 , and the slot 422 is plugged into the flange 331 .

[0061] The flange 331 is folded backward, the slot 422 is located in front of the second elastic seal 420, the second elastic seal 420 is assembled to the connecting arm 330 from back to front, and the slot 422 wraps the flange 331. The flange 331 has a certain length in the front-to-back direction, so that more elastic material can be provided between the flange 331 and the plug-in 321, and the vibration reduction effect is better.

[0062] Furthermore, a connecting foot is provided in front of the second elastic sealing member 420, and the connecting foot includes a connecting column and a limiting head 423 located at the plug-in end of the connecting column, and the diameter of the limiting head 423 is larger than the diameter of the connecting column; a limiting hole is provided on the connecting arm 330, and the diameter of the limiting hole is less than or equal to the diameter of the limiting head 423, so that the limiting head 423 passes through the limiting hole under the action of external force and stops at one side of the connecting arm 330.

[0063] During assembly, the limit head 423 is squeezed to reduce its diameter to a level sufficient to fit into the limit hole, and the limit head 423 is inserted into the limit hole from back to front. After the squeezing force on the limit head 423 is removed, the limit head 423 stops in front of the connecting arm 330, thereby fixing the second elastic seal 420 to the connecting arm 330.

[0064] In this embodiment, the lifting drive module 320 includes a screw motor, and a transmission block of the screw motor forms a movable part.

[0065] The screw of the screw motor extends vertically. The motor of the screw motor is located at the top, away from the oil smoke.

[0066] Further, such as Figure 8 - Fig.10 As shown, the screw motor includes a housing 550 and a base 510, the base 510 is connected to the bottom opening of the housing 550, and an oil retaining edge 530 is provided on the upper surface of the base 510 to prevent oil from flowing to the connection gap between the housing 550 and the base 510; an oil leakage hole 520 is also provided on the base 510, and the oil leakage hole 520 is located on the inner side of the oil retaining edge 530.

[0067] The housing 550 is located inside the box body 310. The upper and lower ends of the housing 550 may both be open, with the upper opening being closed by an end cover and the lower opening being closed by the base 510. Although the box body 310 is sealed, a small amount of oil will still enter the screw position. Due to the effect of gravity, this part of the oil will flow downward and fall into the base 510. Because the base 510 is provided with an oil retaining edge 530 and an oil leakage hole 520, the oil that falls from top to bottom into the oil retaining edge 530 will flow out from the oil leakage hole 520, preventing the oil from passing over the oil retaining edge 530 and seeping out from the connection gap between the housing 550 and the base 510.

[0068] The screw motor also includes a screw. A boss located inside the oil retaining edge 530 is arranged on the base 510 . A positioning hole 540 is arranged on the top surface of the boss. The lower end of the screw is inserted into the positioning hole 540 .

[0069] A rotating shaft is provided at the lower end of the screw rod, which is coaxially arranged with the screw rod. The diameter of the rotating shaft is smaller than the diameter of the screw rod. The rotating shaft extends into the positioning hole 540. On the one hand, it can make the rotation of the screw rod more stable and reduce shaking. On the other hand, the outer wall of the positioning hole 540 can also play the role of oil barrier to prevent oil pollution from entering the rotation center position of the rotating shaft.

[0070] It should be noted that the top surface of the boss is higher than the top surface of the oil retaining edge 530, that is, when the oil leakage hole 520 is blocked, as the oil stains increase, the oil stains will overflow the oil retaining edge 530 and will not enter the positioning hole 540, thereby ensuring the normal operation of the screw motor.

[0071] In this embodiment, Figure 1As shown, the back of the box body 310 is open and faces the back plate of the fixed shell 100; the back plate of the fixed shell 100 is connected to the box body 310 and closes the opening. A support frame 700 extending in the horizontal direction is provided on the back of the fixed shell 100, and the left and right ends of the support frame 700 are respectively connected to the left and right side plates of the fixed shell 100, and the back plate of the fixed shell 100 is located behind the support frame 700. The support frame 700 serves to improve the structural strength of the fixed shell 100 and reduce noise. The box body 310 is connected to the support frame 700, which can further increase the connection stability of the box body 310.

[0072] The lifting hood provided by the utility model includes the above-mentioned oil circuit structure. Since the lifting hood provided by the utility model adopts the above-mentioned oil circuit structure, the lifting hood provided by the utility model also has the advantages of the oil circuit structure.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An oil circuit structure, characterized in that: include: A fixed outer shell (100) and a movable inner shell (200) which are slidably connected, wherein the movable inner shell (200) is provided with a smoke inlet (210); the movable inner shell (200) can be raised and lowered relative to the fixed outer shell (100) so that the vertical position of the smoke inlet (210) is adjustable; The oil circuit structure further comprises a box body (310), a lifting drive module (320) and a connecting arm (330); the box body (310) is connected to the fixed housing (100); the lifting drive module (320) is located in the box body (310), and the lifting drive module (320) has a movable part that can be lifted and lowered; A mounting groove is provided on the side wall of the box body (310), a first elastic sealing member (410) is provided in the mounting groove, and an opening (411) is provided on the first elastic sealing member (410) and extends vertically and communicates with the inside and outside of the box body (310); the connecting arm (330) passes through the opening (411), and the connecting arm (330) is respectively connected to the movable part and the movable inner shell (200); in the width direction of the opening (411), the distance between the two opposite side walls of the connecting arm (330) is greater than or equal to the width of the opening (411).

2. The oil circuit structure according to claim 1, characterized in that: The first elastic sealing member (410) is disposed on opposite side walls of the box body (310); the connecting arm (330) comprises an opposite first end and a second end, and the movable portion is connected to a position between the first end and the second end; The first end and the second end respectively pass through the openings (411) on the two first elastic sealing members (410) and are connected to the movable inner shell (200).

3. The oil circuit structure according to claim 1, characterized in that: The movable portion is provided with a plug-in unit (321) for connecting with the connecting arm (330); The connecting arm (330) is provided with a connecting hole, a second elastic sealing member (420) is provided in the connecting hole, a plug hole (421) is provided on the second elastic sealing member (420), and the plug hole (421) is plugged into the plug-in unit (321).

4. The oil circuit structure according to claim 3, characterized in that: A flange (331) is provided at the inner edge of the connection hole, and a slot (422) is provided on the second elastic sealing member (420), and the slot (422) is plugged into the flange (331).

5. The oil circuit structure according to claim 4, characterized in that: The second elastic sealing member (420) is provided with a connecting foot, the connecting foot comprising a connecting column and a limiting head (423) located at the plug-in end of the connecting column, the diameter of the limiting head (423) being greater than the diameter of the connecting column; A limiting hole is provided on the connecting arm (330), and the diameter of the limiting hole is smaller than or equal to the diameter of the limiting head (423), so that the limiting head (423) passes through the limiting hole under the action of an external force and stops on one side of the connecting arm (330).

6. The oil circuit structure according to claim 2, characterized in that: The lifting drive module (320) comprises a screw motor, and a transmission block of the screw motor forms the movable part.

7. The oil circuit structure according to claim 6, characterized in that: The screw motor comprises a housing (550) and a base (510); the base (510) is connected to the bottom opening of the housing (550); an oil retaining edge (530) is provided on the upper surface of the base (510) for preventing oil from flowing to a connection gap between the housing (550) and the base (510); The base (510) is also provided with an oil leakage hole (520), and the oil leakage hole (520) is located inside the oil retaining edge (530).

8. The oil circuit structure according to claim 7, characterized in that: The screw motor also includes a screw, and the base (510) is provided with a boss located inside the oil retaining edge (530), and the top surface of the boss is provided with a positioning hole (540), and the lower end of the screw is inserted into the positioning hole (540).

9. The oil circuit structure according to claim 7, characterized in that: The back side of the box body (310) is open and faces the back plate of the fixed shell (100); the back plate of the fixed shell (100) is connected to the box body (310) and closes the opening.

10. A lifting range hood, characterized in that: The oil circuit structure comprises the oil circuit structure as described in any one of claims 1 to 9.

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