CN111256180A

CN111256180A - Energy harvesting mechanism for range hood and oil cup liquid level detection device applying energy harvesting mechanism

Info

Publication number: CN111256180A
Application number: CN201811455401.0A
Authority: CN
Inventors: 何海浪; 任树栋
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-06-09
Anticipated expiration: 2038-11-30
Also published as: CN111256180B

Abstract

The invention relates to an energy harvesting mechanism for a range hood, which comprises a shell, at least three energy harvesting elements and an electricity storage module, wherein the shell is arranged outside the annular wall of a volute at intervals along the circumferential direction, the electricity storage module is electrically connected with the energy harvesting elements, the shell comprises an inner annular shell attached to the outside of the volute and an outer annular shell attached to the outside of the inner annular shell, the outer annular shell is connected with the inner annular shell, one end of each energy harvesting element is fixed on the inner surface of the outer annular shell, and the other end of each energy harvesting element can movably abut against the inner surface of the inner annular shell. The energy capturing mechanism for the range hood is arranged on the periphery of the volute, can capture energy lost in the process of the vibration of the volute, realizes energy recovery, can improve the energy utilization rate of the range hood, and is energy-saving and environment-friendly. The invention also relates to an oil cup liquid level detection device which comprises the energy harvesting mechanism and a liquid level sensor electrically connected with the electricity storage module in the energy harvesting mechanism and used for detecting the liquid level of the oil cup, so that the oil cup liquid level detection device is more humanized in use.

Description

Energy harvesting mechanism for range hood and oil cup liquid level detection device applying energy harvesting mechanism

Technical Field

The invention relates to the technical field of range hoods, in particular to an energy harvesting mechanism for a range hood, and further relates to an oil cup liquid level detection device applying the energy harvesting mechanism for the range hood.

Background

The range hood can vibrate in the working process, particularly in a fan system, and part of energy is wasted by the vibration of the volute. The vibration problem that exists in present range hood mainly takes corresponding measure to reduce the vibration or avoid the transmission of vibration. However, the existing range hood does not fully utilize the energy of vibration, the utilization rate of the reusable vibration energy is low, and the energy consumption of the corresponding range hood is also large.

If the utility model discloses a chinese utility model patent "lampblack absorber" that the publication number is CN202546882U (application number is CN2012201046156.7), wherein in the lampblack absorber of disclosing, the separator box intercommunication between the air outlet of fan and the air curtain air outlet sets up the flow distribution plate along the air current discharge direction of fan air outlet in the separator box, and this air current version can reduce the air current vibration, and then plays the effect of vibration reduction and noise reduction. If the chinese utility model patent of granted bulletin No. CN203770221U (application No. CN201420055443.6) is "an ultra-thin fan system structure of range hood", the structure disclosed therein is to set a choke ring at the smoke exhaust port of the air duct front plate to block the gap between the air duct front plate and the cage smoke cavity bottom plate, so as to prevent the oil smoke from entering the body, and simultaneously, the vibration transmission of the fan can be blocked by the choke ring. These patents also relate only to reducing vibrations and reducing the transmission of vibrations, and do not relate to the reuse of vibration energy.

Various sensors are arranged in the range hood, the energy required by the sensors during working is small, and the energy wasted in the range hood can be sufficiently used for the sensors to work normally. However, the sensors used in the existing range hood are powered by a power supply, and the total energy consumption of the range hood can be correspondingly improved.

In addition, few components for detecting the liquid level of the oil cup exist in the currently used range hood, and a user cannot always keep track of the liquid level height in the oil cup when the range hood is used, so that the condition that dirty oil overflows due to the fact that the user forgets to clean the oil cup can occur, and the cleaning difficulty of the range hood is increased.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide an energy capturing mechanism for a range hood, which can recover the vibration energy of a volute in the range hood, aiming at the above prior art.

The second technical problem to be solved by the present invention is to provide an oil cup liquid level detection device capable of self-supplying energy and detecting the liquid level height of an oil cup for reminding a user to clean the oil cup, aiming at the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides an energy harvesting mechanism for range hood which characterized in that: the energy-storing volute comprises a shell arranged outside the annular wall of the volute, at least three energy-storing elements arranged in the shell at intervals along the circumferential direction and an electricity-storing module electrically connected with the energy-storing elements, wherein the shell comprises an inner ring shell attached to the outside of the volute and an outer ring shell arranged outside the inner ring shell in an enclosing manner, the outer ring shell is connected with the inner ring shell, one end of each energy-storing element is fixed on the inner surface of the outer ring shell, and the other end of each energy-storing element can movably abut against the inner surface of the inner ring shell.

In order to collect energy lost by vibration on the volute conveniently, the energy capturing element comprises a base, a base sheet which is elastic and connected to the base and a piezoelectric sheet arranged on the base sheet, the base is installed on the inner surface of the outer ring shell, the free end of the base sheet abuts against the inner surface of the inner ring shell, and the piezoelectric sheet is electrically connected with the electricity storage module.

In order to guarantee base piece installation department fixed mounting's fastness to improve the deformation volume of piezoelectric patches, improve the energy harvesting ability of piezoelectric patches, the base includes base and apron, the base piece is equipped with and presss from both sides and establishes installation department and lie in between base and the apron deformation portion outside the base.

In order to improve the connection firmness of the substrate piece, a convex block is convexly arranged on the inner surface of the cover plate, a groove is arranged on the base corresponding to the convex block in a matched mode, and the installation part of the substrate piece is sleeved on the convex block.

In order to avoid the influence of the displacement of the substrate sheet caused by vibration on the energy capturing effect of the piezoelectric sheet, a boss part and a groove part are arranged on the inner surfaces of the cover plate and the base which are matched, and a bending part which can be clamped between the boss part and the groove part is arranged on the mounting part of the substrate sheet in a matching manner.

In order to facilitate the butt joint installation of the cover plate and the base, the base is provided with a convex edge and a clamping table matched with the edge of the cover plate.

In order to facilitate the installation of the base on the outer ring shell, a first installation hole is formed in the base, a second installation hole is formed in the cover plate corresponding to the first installation hole, and third installation holes corresponding to the first installation hole and the second installation hole are formed in the installation part of the substrate piece respectively.

Simply, the deformation portion of substrate piece includes that the multistage is the mounting panel that triangle wave form was buckled and is set up, all installs on every section mounting panel piezoelectric plate.

A slotted hole is formed in the middle of the deformation part of the substrate piece along the bending direction of the deformation part, so that each section of mounting plate is provided with at least two mounting parts arranged at intervals, and each mounting part is respectively provided with one piezoelectric piece.

In order to reduce the friction force between the free end of the substrate sheet and the inner surface of the inner ring shell and avoid the phenomenon that the excessive friction force influences the action of the substrate sheet to influence the energy capturing deformation of the substrate sheet, the free end of the substrate sheet is bent towards the direction far away from the inner surface of the inner ring shell to form a hook part.

In order to facilitate the installation of the energy capturing element and avoid the customization of components in the energy capturing element so as to reduce the manufacturing cost, the outer ring shell is composed of at least three planes which are continuously arranged along the circumferential direction, and the energy capturing element is fixedly installed on the inner surface of one plane.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an oil cup liquid level detection device, includes aforementioned energy harvesting mechanism, its characterized in that: the oil cup liquid level detection device is characterized by further comprising a liquid level sensor used for detecting the liquid level of the oil cup, wherein the liquid level sensor is electrically connected with the electricity storage module.

More humanized, still include with the controller that level sensor electricity is connected and with the liquid level suggestion device that the controller electricity is connected.

Optionally, the liquid level prompting device is a display lamp, a display screen and/or a buzzer.

In order to improve the stability of the long-term work of the liquid level detection device and prolong the service life of the liquid level detection device, the liquid level sensor is an infrared sensor, and the infrared sensor is arranged above the oil cup.

Compared with the prior art, the invention has the advantages that: the energy capturing mechanism for the range hood is arranged on the periphery of the volute, can capture energy lost in the process of the vibration of the volute, realizes energy recovery, can improve the energy utilization rate of the range hood, and is energy-saving and environment-friendly. According to the invention, the casing with the inner ring casing and the outer ring casing is arranged by combining the volute casing structure, the inner ring casing is attached to the outer wall of the volute casing, so that synchronous vibration with the outer wall of the volute casing is realized, meanwhile, the inner ring casing transmits the vibration to the outer ring casing, and further, energy harvesting is performed on the energy lost by the vibration through the energy harvesting element arranged between the inner ring casing and the outer ring casing, so that the energy harvesting device is very suitable for a range hood.

Drawings

Fig. 1 is a perspective view of an energy capturing mechanism for a range hood in an embodiment of the invention.

FIG. 2 is a perspective view of an energy harvesting element according to an embodiment of the present invention.

Fig. 3 is an exploded perspective view of an energy harvesting element from a top view according to an embodiment of the present invention.

Fig. 4 is a perspective exploded view of an energy capture element at a bottom view angle according to an embodiment of the invention.

FIG. 5 is a block diagram of the oil cup level detection apparatus according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 4, the energy harvesting mechanism for a range hood in the present embodiment includes a housing 1, a plurality of energy harvesting elements 2 provided in the housing 1, and an electricity storage module 3 electrically connected to each energy harvesting element 2.

The casing 1 comprises an inner ring casing 11 and an outer ring casing 12, wherein the inner ring casing 11 is closely attached to the outer ring wall of the volute, and two ends of the inner ring casing 11 are provided with mounting surfaces which can be mounted on other components in a matching manner. The outer ring shell 12 surrounds the inner ring shell 11, the inner ring shell 11 in this embodiment is formed by a plurality of planes which are continuously and integrally arranged along the circumferential direction according to the change of the curvature angle of the surface of the annular wall of the volute, that is, the outer ring shell 12 is formed by continuously bending a plate according to different angle requirements, and each energy capturing element 2 is fixedly installed on the inner surface of one plane.

The energy harvesting element 2 comprises a base 21, a substrate sheet 22 and a plurality of piezoelectric sheets 23.

Wherein the base 21 comprises a base 211 and a cover 212, and the base 211 and the cover 212 are matched and paired together. The base sheet 22 has a mounting portion 221 interposed between the base 211 and the cover 212, and a deformation portion 222 located outside the base 21 and integrally connected to the mounting portion 221. The base 211 is formed with a first mounting hole 2114, the cover 212 is formed with a second mounting hole 2124 corresponding to the first mounting hole 2114, and the mounting portion 221 of the base sheet 22 is formed with a third mounting hole 2212 corresponding to the first mounting hole 2114 and the second mounting hole 2124, respectively.

A protrusion 2121 is protruded from the inner surface of the cover 212 at the periphery of the first mounting hole 2114, and a groove 2111 is fittingly formed in the base 211 corresponding to the protrusion 2121. A boss portion 2122 is further protruded from the inner surface of the cover plate 212, a groove portion 2112 corresponding to the boss portion 2122 is provided on the inner surface of the base 211, and a bent portion 2211 capable of being fittingly sandwiched between the boss portion 2122 and the groove portion 2112 is provided on the mounting portion 221 of the base sheet 22. The edge of the base 211 extends toward the mounting direction of the cover 212 and is provided with a convex edge 2113, and the edge of the cover 212 is provided with a clamping table 2123 matched with the convex edge 2113.

When the base sheet 22 and the base 21 are mounted, the mounting portion 221 of the base sheet 22 is fitted over the protrusion 2121 of the base 211 through the third mounting hole 2212, and the cover 212 is fittingly abutted on the base 211, so that the protrusion 2121 of the base 211 is snapped into the groove 2111 of the cover 212. Meanwhile, the boss portion 2122 of the cover plate 212 projects into the groove portion 2112 of the base plate 211, while the bent portion 2211 of the mounting portion 221 of the base plate 22 is fitted and caught between the abutting surfaces of the boss portion 2122 and the groove portion 2112. In addition, the raised edge 2113 of the base 211 and the retaining ledge 2123 of the cover 212 are also matingly engaged. Bolts respectively penetrate through the first mounting hole 2114 on the cover plate 212, the third mounting hole 2212 on the base plate 22 and the second mounting hole 2124 on the base 211, and are further fixed on the inner surface of one plane on the outer ring shell 12, so that the fixed installation of the energy capturing element 2 on the outer ring shell 12 is realized. The structures of the protrusion 2121 and the groove 2111, the protrusion portion 2122 and the groove portion 2112, the convex edge 2113 and the clamping portion 2123 on the cover plate 212 and the base 211 can ensure the installation firmness of the substrate sheet 22 between the cover plate 212 and the base 211 and the installation firmness of the base 21 on the outer ring shell 12, and the stronger the fixing strength of the installation portion 221 of the substrate sheet 22 is, the better the vibration capability of the deformation portion 222 of the substrate sheet 22 is, and the better the energy harvesting is.

The deformation part 222 of the substrate sheet 22 is made of an elastic material, the deformation part 222 includes a plurality of sections of mounting plates 2221 which are connected and bent in a triangular wave shape and are integrally arranged, and the free end of the whole deformation part 222 is abutted against the inner surface of the inner ring shell 11. Meanwhile, the free end of the deformation portion 222 is bent towards the direction away from the inner surface of the inner ring shell 11 to form a hook portion 223, so that the deformation portion 222 and the inner surface of the inner ring shell 11 are smooth arc surfaces, the friction force between the free end of the substrate 22 and the inner surface of the inner ring shell 11 is reduced, and the situation that the friction force influences the action of the substrate 22 and further influences the energy harvesting deformation of the substrate 22 is avoided.

The middle part of the deformation part 222 of the substrate sheet 22 is provided with slots 2222 along the bending direction of the deformation part 222, the number of the slots 2222 is set according to the requirement, and the slots 2222 are arranged at intervals. In this embodiment, only one slot 2222 is provided, so that each mounting plate 2221 forms two mounting areas spaced apart from each other, and each mounting area is provided with one piezoelectric sheet 23. The slot 2222 can weaken the strength of the bending position of the deformation portion 222, so that the vibration amplitude of the deformation portion 222 can be increased, the sensing and receiving capacity of the piezoelectric sheet 23 on the substrate sheet 22 for the vibration energy can be improved, and the collection of the vibration energy can be further increased.

During operation, the deformation portion 222 is deformed along with the synchronous vibration of the inner ring shell 11 caused by the vibration of the volute, so that the piezoelectric sheet 23 mounted on the deformation portion 222 is deformed, and the vibration energy of the piezoelectric sheet 23 due to the deformation induction and the receiving is transmitted to the electricity storage module 3 and converted into electric energy.

As shown in fig. 5, the oil cup liquid level detection device using the energy harvesting mechanism includes a liquid level sensor 5, a controller 7, and a liquid level indicator 6 in addition to the energy harvesting mechanism.

Wherein level sensor 5 adopts infrared sensor, and this level sensor 5 is connected with electricity storage module 3 electricity, and then is supplied power by electricity storage module 3. The liquid level sensor 5 is arranged at the position of the rear cavity of the smoke collecting cover, which is right opposite to the upper part of the oil cup.

The controller 7 can adopt a controller in a control circuit board in the range hood, the liquid level sensor 5 is electrically connected with the controller 7, further liquid level signals in the oil cup obtained by detection are transmitted to the controller 7, the controller 7 is also electrically connected with the liquid level prompting device 6, the controller 7 calculates liquid level data according to the detected liquid level signals, and if the liquid level data obtained by calculation reaches an early warning liquid level, the liquid level prompting device 6 is controlled to work, and a user is prompted to clean oil stains in the oil cup. The liquid level prompting device 6 can adopt a display lamp, a display screen and/or a buzzer and the like. After the oil cup liquid level detection device is used, a user can be effectively reminded of cleaning oil stains in the oil cup in time, the oil cup liquid level detection device is more humanized, meanwhile, self-energy supply can be achieved through an energy harvesting mechanism, extra energy sources are not needed, and the oil cup liquid level detection device is energy-saving and environment-friendly. The energy harvesting mechanism can also be used for supplying energy to other low-energy-consumption elements.

Claims

1. The utility model provides an energy harvesting mechanism for range hood which characterized in that: the energy-saving and energy-saving device comprises a shell (1) arranged outside the annular wall of a volute, at least three energy-harvesting elements (2) arranged in the shell (1) at intervals along the circumferential direction and an electricity-storage module (3) electrically connected with the energy-harvesting elements (2), wherein the shell (1) comprises an inner annular shell (11) attached to the outside of the volute and an outer annular shell (12) arranged outside the inner annular shell (11) in an enclosing manner, the outer annular shell (12) is connected with the inner annular shell (11), one end of each energy-harvesting element (2) is fixed on the inner surface of the outer annular shell (12), and the other end of each energy-harvesting element (2) can movably abut against the inner surface of the inner annular shell (11).

2. The energy capturing mechanism for the range hood of claim 1, wherein: the energy harvesting element (2) comprises a base (21), a substrate sheet (22) which has elasticity and is connected to the base (21) and a piezoelectric sheet (23) arranged on the substrate sheet (22), the base (21) is installed on the inner surface of the outer ring shell (12), the free end of the substrate sheet (22) abuts against the inner surface of the inner ring shell (11), and the piezoelectric sheet (23) is electrically connected with the electricity storage module (3).

3. The energy capturing mechanism for the range hood of claim 2, wherein: the base (21) comprises a base (211) and a cover plate (212), and the base sheet (22) is provided with an installation part (221) which is arranged between the base (211) and the cover plate (212) in a clamping way and a deformation part (222) which is positioned outside the base (21).

4. The energy capturing mechanism for the range hood of claim 3, wherein: the inner surface of the cover plate (212) is convexly provided with a convex block (2121), a groove (2111) is arranged on the base (211) corresponding to the convex block (2121) in a matched mode, and the installation part (221) of the substrate piece (22) is sleeved on the convex block (2121).

5. The energy capturing mechanism for the range hood of claim 3, wherein: the cover plate (212) and the base (211) are provided with a boss part (2122) and a groove part (2112) which are matched with each other on the inner surfaces, and the mounting part (221) of the base plate (22) is provided with a bending part (2211) which can be matched and clamped between the boss part (2122) and the groove part (2112).

6. The energy capturing mechanism for the range hood of claim 3, wherein: the edge of the base (211) and the edge of the cover plate (212) are provided with a convex edge (2113) and a clamping table (2123) in a matched mode.

7. The energy capturing mechanism for the range hood of claim 3, wherein: the base (211) is provided with a first mounting hole (2114), the cover plate (212) is provided with a second mounting hole (2124) corresponding to the first mounting hole (2114), and the mounting part (221) of the substrate sheet (22) is provided with a third mounting hole (2212) corresponding to the first mounting hole (2114) and the second mounting hole (2124) respectively.

8. The energy capturing mechanism for the range hood according to any one of claims 3 to 7, wherein: the deformation part (222) of the substrate sheet (22) comprises a plurality of sections of mounting plates (2221) which are bent in a triangular wave shape, and each section of mounting plate (2221) is provided with the piezoelectric sheet (23).

9. The energy capturing mechanism for the range hood of claim 8, wherein: a slotted hole (2222) is formed in the middle of the deformation part (222) of the substrate piece (22) along the bending direction of the deformation part (222), so that each section of mounting plate (2221) is provided with at least two mounting areas arranged at intervals, and each mounting area is respectively provided with one piezoelectric piece (23).

10. The energy capturing mechanism for the range hood according to any one of claims 2 to 7, wherein: the free end of the substrate piece (22) is bent towards the direction far away from the inner surface of the inner ring shell (11) to form a hook part (223).

11. The energy capturing mechanism for the range hood according to any one of claims 1 to 7, wherein: the outer ring shell (12) is formed by at least three planes which are continuously arranged along the circumferential direction, and the energy capturing element (2) is fixedly arranged on the inner surface of one plane.

12. An oil cup liquid level detection device adopting the energy harvesting mechanism as claimed in any one of claims 1 to 11, wherein: the oil cup liquid level detection device is characterized by further comprising a liquid level sensor (5) used for detecting the liquid level of the oil cup, wherein the liquid level sensor (5) is electrically connected with the electricity storage module (3).

13. The oil cup level detection device of claim 12, wherein: the liquid level monitoring device also comprises a controller (7) electrically connected with the liquid level sensor (5) and a liquid level prompting device (6) electrically connected with the controller (7).

14. The oil cup level detection device of claim 13, wherein: the liquid level prompting device (6) is a display lamp, a display screen and/or a buzzer.

15. The oil cup level detection device of claim 12, wherein: the liquid level sensor (5) is an infrared sensor, and the infrared sensor is arranged above the oil cup.