Thermoelectric power generation assembly and range hood and gas stove integrated device

Abstract

The utility model relates to the technical field of kitchen appliances, and discloses a thermoelectric power generation assembly and a range hood and gas stove integrated device, and the thermoelectric power generation assembly comprises a thermoelectric power generation device which comprises a thermoelectric power generation sheet, a hot end heat collector and a cold end radiator, the hot-end heat collector is used for collecting heat generated during combustion of the gas stove and transmitting the heat to the hot surface of the thermoelectric power generation sheet, and the cold-end radiator is used for cooling the cold surface of the thermoelectric power generation sheet; and the air duct structure is arranged between the cold-end radiator and a fan of the range hood, and when the fan works, heat of the cold-end radiator can be pumped away through the air duct structure, so that the temperature difference between the hot surface and the cold surface is increased. The cold end of the thermoelectric power generation device is cooled in the mode, the cold end radiator can be well cooled, the structure is simple, the cost is relatively low, the efficiency is relatively high, and the problems that in the prior art, the mode for cooling the cold end of the thermoelectric power generation device is relatively complex in structure, relatively high in cost and not ideal in effect are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a thermoelectric power generation component and an integrated device of a range hood and a gas stove. Background Art

[0002] For traditional gas stoves, it is usually necessary to use mains power or dry batteries to provide electrical energy for control systems such as igniters and flameout protection devices. However, using mains power can easily make the structure of the gas stove device complex, while using dry batteries requires frequent replacement, with poor usability and easy environmental pollution.

[0003] Therefore, a thermoelectric power generation device is adopted in the gas stoves in related technologies. The thermoelectric power generation device usually consists of a hot end (collector), a thermoelectric power generation chip, a cold end (radiator), etc. To improve the power generation efficiency, a large temperature difference between the hot end and the cold end needs to be ensured. Currently, there are many ways to dissipate heat from the cold end on the market, such as water cooling, phase change materials, heat conduction, etc., but their implementation structures are relatively complex, the costs are relatively high, and the effects are not very ideal. Summary of the Utility Model

[0004] In view of this, the utility model provides a thermoelectric power generation component and an integrated device of a range hood and a gas stove to solve the problems of complex structure, high cost, and unsatisfactory effect in the prior art for dissipating heat from the cold end of the thermoelectric power generation device.

[0005] In a first aspect, the utility model provides a thermoelectric power generation component, including:

[0006] A thermoelectric power generation device, including a thermoelectric power generation chip, a hot end collector, and a cold end radiator. The hot end collector is used to collect the heat generated during the combustion of the gas stove and transfer it to the hot surface of the thermoelectric power generation chip, and the cold end radiator is used to cool the cold surface of the thermoelectric power generation chip;

[0007] An air duct structure is arranged between the cold end radiator and the fan of the range hood. When the fan works, it can draw away the heat of the cold end radiator through the air duct structure to increase the temperature difference between the hot surface and the cold surface.

[0008] Beneficial effects: By providing a duct structure between the cold-end radiator and the fan of the range hood, the combination of the thermoelectric power generation device and the range hood is realized. The fan of the range hood can be used to extract the heat of the cold-end radiator of the thermoelectric power generation device. When the range hood is operating, the heat of the cold-end radiator can be continuously extracted and discharged outdoors together with the oil fumes and waste gases, enabling the cold-end radiator to continuously maintain a relatively low temperature. In this way, a large temperature difference can be generated between the hot surface and the cold surface of the thermoelectric power generation chip, greatly improving the power generation efficiency of the thermoelectric power generation chip. By adopting the above method to dissipate heat from the cold end of the thermoelectric power generation device, not only can the heat of the cold-end radiator be dissipated well, but also the structure is simple, the cost is relatively low, and the efficiency is high, effectively solving the problems of complex structure, high cost, and unsatisfactory effect in the prior art for dissipating heat from the cold end of the thermoelectric power generation device.

[0009] In an alternative embodiment, the duct structure includes:

[0010] A duct housing, one end of which is provided with an air inlet communicating with the external environmental space, and the other end is provided with an air outlet communicating with the fan. The cold-end radiator is located inside the duct housing.

[0011] Beneficial effects: By providing the air inlet at one end of the duct housing, it can ensure that the air in the external environmental space can continuously enter the duct housing to cool down the cold-end radiator, ensuring the heat dissipation effect of the cold-end radiator.

[0012] In an alternative embodiment, the cold-end radiator is located at one end of the duct housing close to the air inlet.

[0013] Beneficial effects: By arranging the cold-end radiator at one end close to the air inlet, the external incoming air can come into contact with the cold-end radiator immediately to cool it down and take away the heat of the cold-end radiator, with better heat dissipation effect and higher efficiency. Moreover, since the air inlet is close to the cold-end radiator, it can also serve as a heat dissipation hole, which is more conducive to the heat dissipation of the cold-end radiator.

[0014] In an alternative embodiment, the thermoelectric power generation device is installed on the stove shell of the gas stove;

[0015] At least a heat dissipation part of the cold-end radiator is located outside the stove shell, and the duct housing covers the heat dissipation part.

[0016] Beneficial effects: By covering the duct housing on the cold-end radiator located outside the stove shell, no modification is required for the cold-end radiator. The assembly of the two can be achieved simply by covering the duct housing on the exposed heat dissipation part of the cold-end radiator, making the assembly more convenient and efficient.

[0017] In an alternative embodiment, the thermoelectric power generation device is installed on the bottom wall of the stove shell;

[0018] A connection opening is provided on the top wall of the air inlet end of the air duct housing, and the heat dissipation part of the cold-end radiator extends into the air duct housing through the connection opening.

[0019] Beneficial effects: One end of the air duct housing with an air inlet is the air inlet end, and the end with an air outlet is the air outlet end. Through the connection opening provided on the top wall of the air inlet end of the air duct housing, the shape and size of the connection opening match the shape and size of the heat dissipation part of the cold-end radiator. During assembly, align the connection opening with the heat dissipation part of the cold-end radiator, and then buckle the air duct housing on the bottom wall of the stove housing to cover the cold-end radiator therein. The assembly is relatively convenient and fast.

[0020] In an alternative embodiment, the connection opening is attached and fixed to the bottom wall of the stove housing.

[0021] Beneficial effects: By attaching and fixing the connection opening to the bottom wall of the stove housing, on the one hand, air leakage can be reduced, and on the other hand, the structural compactness can also be improved.

[0022] In an alternative embodiment, positioning ribs are provided on at least one side of the connection opening, and the positioning ribs are used to resist and limit the outside of the side wall of the stove housing to form positioning.

[0023] Beneficial effects: Through the positioning ribs provided on the side of the connection opening, when assembling the air duct housing, the positioning ribs can resist and limit on the side wall of the stove housing, thereby forming a limit and improving the assembly efficiency.

[0024] In an alternative embodiment, one end of the air duct structure is connected to the gas stove by screws, and the other end is snap-fitted and fixed to the range hood.

[0025] Beneficial effects: The air duct structure is fixed to the gas stove and the range hood by screws and snap-fitting respectively, which is convenient for disassembly and assembly.

[0026] In an alternative embodiment, the range hood includes:

[0027] An air cabinet, a fan is arranged in the air cabinet, and the air outlet end of the air duct housing extends into and is snap-fitted and limited in the air cabinet.

[0028] Beneficial effects: The air outlet end of the air duct housing is communicated with the air cabinet of the range hood, and the fan of the range hood is installed in the air cabinet. Therefore, the air duct housing is also communicated with the fan. By connecting the air duct housing with the air cabinet, the connection between the air duct housing and the fan is realized. Compared with directly connecting to the fan, the assembly is more convenient, and it is also convenient to disassemble, which is more conducive to realizing the quick disassembly and assembly of the air duct structure. When the fan is started, air with a relatively lower temperature in the external environment can be drawn in from the air inlet. After the incoming air flows through the cold-end radiator to cool it down, it can be discharged together with the oil fume into the common flue or outdoors.

[0029] In an alternative embodiment, an insertion port into which the air outlet end of the air duct housing can extend is provided at the bottom of the air cabinet;

[0030] An elastic abutting portion is provided in the insertion port, and the elastic abutting portion is used to elastically abut against the outer wall of the air duct housing to limit the air duct housing.

[0031] Beneficial effects: Through the elastic abutting portion provided in the insertion port, when the air outlet end of the air duct housing is inserted into the air cabinet, the elastic abutting portion can abut against the air duct housing under the action of its own elastic force, realizing the limitation of the air duct housing and improving the stability of the air duct housing in the air cabinet.

[0032] In an alternative embodiment, a bending portion is provided at the air outlet end of the air duct housing.

[0033] Beneficial effects: Through the bending portion provided at the air outlet end of the air duct housing, the bending portion can be limited above the insertion port, playing a role in preventing detachment, preventing the air duct housing from being detached from the insertion port, and further improving the structural stability of the air duct housing.

[0034] In an alternative embodiment, the thermoelectric power generation device further includes:

[0035] A hot-end heat conduction pipe, connected between the burner of the gas stove and the hot-end collector;

[0036] The hot-end collector and the hot-end heat conduction pipe are located above the thermoelectric power generation chip and are closely attached to the hot surface of the thermoelectric power generation chip;

[0037] The cold-end radiator is arranged below the thermoelectric power generation chip and is closely attached to the cold surface of the thermoelectric power generation chip.

[0038] Beneficial effects: One end of the hot-end heat conduction pipe is arranged on the side wall of the burner of the gas stove, and the other end is combined with the hot-end collector. By providing the hot-end heat conduction pipe, it is convenient to conduct the heat generated during the combustion of the gas stove to the hot-end collector. The combination of the hot-end collector and the hot-end heat conduction pipe can collect and transfer the heat conducted by the hot-end heat conduction pipe to the thermoelectric power generation chip. The hot surface of the thermoelectric power generation chip is arranged below the hot-end collector and the hot-end heat conduction pipe, and can efficiently absorb the temperature of the hot-end collector and the hot-end heat conduction pipe; the cold-end radiator is arranged below the thermoelectric power generation chip and is closely attached to the cold surface of the thermoelectric power generation chip, and can efficiently dissipate heat from the cold surface of the power generation chip, reducing the temperature of the cold surface of the thermoelectric power generation chip.

[0039] In a second aspect, the present utility model further provides an integrated device of a range hood and a gas stove, including:

[0040] A gas stove;

[0041] A range hood, arranged above the gas stove, and the range hood includes a blower;

[0042] For the thermoelectric power generation module of any of the above embodiments, the thermoelectric power generation device of the thermoelectric power generation module is installed on the gas stove, and the air duct structure is arranged between the thermoelectric power generation device and the fan. Description of the Drawings

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0044] Figure 1 Schematic diagram of the overall structure of the integrated device of the range hood and the gas stove in the embodiment of the present invention;

[0045] Figure 2 Exploded view of the integrated device of the range hood and the gas stove in the embodiment of the present invention;

[0046] Figure 3 Cross-sectional view of the integrated device of the range hood and the gas stove in the embodiment of the present invention;

[0047] Figure 4 For Figure 3 Enlarged view of the structure at A in

[0048] Figure 5 Schematic diagram of the structure of the burner and the hot-end heat conduction tube in the embodiment of the present invention;

[0049] Figure 6 Schematic diagram of the structure of the air duct structure at one angle in the embodiment of the present invention;

[0050] Figure 7 Schematic diagram of the structure of the air duct structure at another angle in the embodiment of the present invention.

[0051] Description of the Reference Numerals:

[0052] 10. Thermoelectric power generation device; 11. Thermoelectric power generation chip; 12. Hot-end collector; 13. Cold-end radiator; 131. Heat dissipation part; 14. Hot-end heat conduction tube;

[0053] 20. Air duct housing; 21. Air inlet; 22. Air outlet; 23. Connection opening; 24. Positioning rib; 25. Connection ear; 26. Bending part;

[0054] 100. Gas stove; 101. Stove housing; 102. Burner;

[0055] 200, Range hood; 201, Fan; 202, Air cabinet; 2021, Elastic abutting part; 20211, First elastic abutting part; 20212, Second elastic abutting part. Detailed implementation manners

[0056] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0057] The following combines Figures 1 to 7 , and describes the embodiments of the present utility model.

[0058] According to an embodiment of the present utility model, on the one hand, the present utility model provides a thermoelectric power generation assembly, including a thermoelectric power generation device 10 and a duct structure. The thermoelectric power generation device 10 includes a thermoelectric power generation chip 11, a hot-end collector 12, and a cold-end radiator 13. The hot-end collector 12 is used to collect the heat generated during the combustion of the gas stove 100 and transfer it to the hot surface of the thermoelectric power generation chip 11. The cold-end radiator 13 is used to cool the cold surface of the thermoelectric power generation chip 11. The duct structure is arranged between the cold-end radiator 13 and the fan 201 of the range hood 200. When the fan 201 works, it can draw away the heat of the cold-end radiator 13 through the duct structure to increase the temperature difference between the hot surface and the cold surface.

[0059] In the above embodiment, by arranging the duct structure between the cold-end radiator 13 and the fan 201 of the range hood 200, the combination of the thermoelectric power generation device 10 and the range hood 200 is realized. The fan 201 of the range hood 200 can draw away the heat of the cold-end radiator 13 of the thermoelectric power generation device 10. When the range hood 200 works, it can continuously draw away the heat of the cold-end radiator 13 and discharge it outdoors together with the oil fume and waste gas. The cold-end radiator 13 can be continuously maintained at a relatively low temperature, so that a large temperature difference can be generated between the hot surface and the cold surface of the thermoelectric power generation chip 11, greatly improving the power generation efficiency of the thermoelectric power generation chip 11. By adopting the above method to dissipate the heat of the cold end of the thermoelectric power generation device 10, the present utility model can not only dissipate the heat of the cold-end radiator 13 well, but also has a simple structure, relatively low cost, high efficiency, and effectively solves the problems of complex structure, high cost and unsatisfactory effect in the prior art for dissipating the heat of the cold end of the thermoelectric power generation device 10.

[0060] Specifically, in this embodiment, the thermoelectric power generation device 10 is installed on the gas stove 100. The cold-end radiator 13 is located at the bottom of the gas stove 100. A duct structure is provided between the gas stove 100 and the range hood 200. One end of the duct structure is communicated with the fan 201 of the range hood 200, and the other end is arranged at the position of the cold-end radiator 13 at the bottom of the gas stove 100. When the fan 201 operates, the heat of the cold-end radiator 13 can be sucked away through the duct structure to reduce its temperature.

[0061] In some embodiments, the thermoelectric power generation device 10 further includes a hot-end heat conduction tube 14. The hot-end heat conduction tube 14 is connected between the burner 102 of the gas stove 100 and the hot-end collector 12; the hot-end collector 12 and the hot-end heat conduction tube 14 are located above the thermoelectric power generation chip 11 and are closely attached to the hot surface of the thermoelectric power generation chip 11; the cold-end radiator 13 is arranged below the thermoelectric power generation chip 11 and is closely attached to the cold surface of the thermoelectric power generation chip 11.

[0062] In the above embodiment, one end of the hot-end heat conduction tube 14 is arranged on the side wall of the burner 102 of the gas stove 100, and the other end is combined with the hot-end collector 12. By arranging the hot-end heat conduction tube 14, it is convenient to conduct the heat generated during the combustion of the gas stove 100 to the hot-end collector 12. The combination of the hot-end collector 12 and the hot-end heat conduction tube 14 can collect and transfer the heat conducted by the hot-end heat conduction tube 14 to the thermoelectric power generation chip 11. The hot surface of the thermoelectric power generation chip 11 is arranged below the hot-end collector 12 and the hot-end heat conduction tube 14, which can efficiently absorb the temperature of the hot-end collector 12 and the hot-end heat conduction tube 14; the cold-end radiator 13 is arranged below the thermoelectric power generation chip 11 and is closely attached to the cold surface of the thermoelectric power generation chip 11, which can efficiently dissipate the heat of the cold surface of the power generation chip and reduce the temperature of the cold surface of the thermoelectric power generation chip 11.

[0063] Specifically, an installation opening is formed on the bottom wall of the stove shell 101, and the thermoelectric power generation device 10 is installed in this installation opening. The hot-end collector 12, the thermoelectric power generation chip 11, and the cold-end radiator 13 are arranged in sequence from top to bottom. Among them, the hot-end collector 12 is located inside the stove shell 101. One end of the hot-end heat conduction tube 14 is connected to the burner 102, and the other end is inserted into the inside of the hot-end collector 12, with higher heat conduction effect. Preferably, there are multiple hot-end heat conduction tubes 14, and multiple heat conduction tubes are connected in parallel between the burner 102 and the hot-end collector 12 to improve the heat conduction efficiency. The hot surface of the thermoelectric power generation chip 11 is located above, and the cold surface is located below. The cold-end radiator 13 includes a cold-conducting part for fitting below the cold surface and a heat-dissipating part 131 arranged below the cold-conducting part. The heat-dissipating part 131 is located outside the stove shell 101. Preferably, the heat-dissipating part 131 uses heat-dissipating fins.

[0064] In some embodiments, the air duct structure includes an air duct housing 20. One end of the air duct housing 20 is provided with an air inlet 21 communicating with the external environmental space, and the other end is provided with an air outlet 22 communicating with the fan 201. The cold-end radiator 13 is located inside the air duct housing 20.

[0065] In the above embodiments, by providing the air inlet 21 at one end of the air duct housing 20, it can ensure that the air in the external environmental space can continuously enter the air duct housing 20 to cool the cold-end radiator 13, ensuring the heat dissipation effect of the cold-end radiator 13.

[0066] Specifically, the inside of the air duct housing 20 is hollow to form a heat dissipation air duct. The cold-end radiator 13 is located in the air duct housing 20 between the air inlet 21 and the air outlet 22. When the fan 201 operates, it can draw the air in the external environmental space from the air inlet 21 into the heat dissipation air duct, and after flowing through the cold-end radiator 13 to take away the heat of the cold-end radiator 13, it is discharged outdoors together with the oil fume and waste gas from the air outlet 22.

[0067] In some embodiments, the cold-end radiator 13 is located at one end of the air duct housing 20 close to the air inlet 21.

[0068] In the above embodiments, by arranging the cold-end radiator 13 at one end close to the air inlet 21, it can enable the external incoming air to contact the cold-end radiator 13 for the first time, cool it to take away the heat of the cold-end radiator 13, with a better heat dissipation effect and higher efficiency. Moreover, the air inlet 21 is relatively close to the cold-end radiator 13, and it can also serve as a heat dissipation hole, which is more conducive to the heat dissipation of the cold-end radiator 13.

[0069] In some embodiments, the thermoelectric power generation device 10 is installed on the stove shell 101 of the gas stove 100; at least the heat dissipation part 131 of the cold-end radiator 13 is located outside the stove shell 101, and the air duct housing 20 covers the heat dissipation part 131.

[0070] In the above embodiments, by covering the air duct housing 20 on the cold-end radiator 13 located outside the stove shell 101, no modification is required for the cold-end radiator 13. Only by covering the air duct housing 20 on the exposed heat dissipation part 131 of the cold-end radiator 13 can the assembly of the two be realized, and the assembly is more convenient and efficient.

[0071] In some embodiments, the thermoelectric power generation device 10 is installed on the bottom wall of the stove shell 101; a connection opening 23 is provided on the top wall of the air inlet end of the air duct housing 20, and the heat dissipation part 131 of the cold-end radiator 13 extends into the air duct housing 20 through the connection opening 23.

[0072] In the above embodiments, one end of the air duct housing 20 with the air inlet 21 is the air inlet end, and one end with the air outlet 22 is the air outlet end. Through the connection opening 23 provided on the top wall of the air inlet end of the air duct housing 20, the shape and size of the connection opening 23 match those of the heat dissipation part 131 of the cold-end radiator 13. During assembly, the connection opening 23 is aligned with the heat dissipation part 131 of the cold-end radiator 13, and then the air duct housing 20 is buckled on the bottom wall of the stove shell 101 to cover the cold-end radiator 13 therein, and the assembly is relatively convenient and fast.

[0073] In some embodiments, the connection opening 23 is attached and fixed to the bottom wall of the stove shell 101.

[0074] In the above embodiments, by attaching and fixing the connection opening 23 to the bottom wall of the stove shell 101, on the one hand, air leakage can be reduced, and on the other hand, the structural compactness can also be improved.

[0075] Optionally, a seal is provided between the circumferential edge of the connection opening 23 and the bottom wall of the stove shell 101 to ensure the sealing of the entire air duct housing 20. Of course, the seal can also not be provided. It is mainly necessary to make the connection opening 23 fit on the bottom wall of the stove shell 101, and a small amount of mating gaps will not affect the heat dissipation effect of the cold-end radiator 13.

[0076] In some embodiments, at least one side of the connection opening 23 is provided with a positioning rib 24, and the positioning rib 24 is used to resist and limit the outside of the side wall of the stove shell 101 to form positioning.

[0077] In the above embodiments, through the positioning rib 24 provided on the side of the connection opening 23, when assembling the air duct housing 20, the positioning rib 24 can resist and limit on the side wall of the stove shell 101, thereby forming a limit and improving the assembly efficiency.

[0078] Specifically, the positioning rib 24 is located on the side of the connection opening 23 away from the air inlet 21. The air outlet end of the air duct housing 20 is a box-type structure with an open top, and the air inlet 21 is opened on the side end wall of the air duct housing 20. Preferably, the air inlet 21 is a plurality of air inlet small holes opened on the side end wall to ensure the air inlet effect. The shape of the air inlet small holes can be square, rhombus, circular, etc. The positioning rib 24 is disposed opposite to the side end wall, and the positioning rib 24 is a baffle structure formed by upward extension of the side edge of the connection opening 23 opposite to the air inlet 21.

[0079] Preferably, the upper edge of the positioning rib 24 is provided with a positioning flange that bends and extends away from the side end wall. A connecting flange is provided above the side wall of the stove shell 101. The connecting flange fits under the panel of the gas stove 100, and the positioning flange supports under the connecting flange, so as to form multi-directional limits. And by providing the positioning flange, it also avoids the problem that the upper edge of the positioning rib 24 is too sharp and easily scratches the gas stove 100.

[0080] In some embodiments, one end of the air duct structure is connected to the gas stove 100 by screws, and the other end is snap-fitted and fixed to the range hood 200.

[0081] In the above embodiments, the air duct structure is fixed to the gas stove 100 and the range hood 200 by screws and snap-fitting respectively, which is convenient for disassembly and assembly.

[0082] Specifically, a plurality of connecting ears 25 are arranged at intervals on the circumferential edge of the connecting opening 23. The connecting ears 25 fold and extend horizontally outwards. The connecting ears 25 can fit on the bottom wall of the stove shell 101. Screw holes are provided on the connecting ears 25, and corresponding connecting holes are provided on the bottom wall of the stove shell 101. Screws are sequentially passed through the screw holes and the connecting holes and then locked and fixed by nuts.

[0083] In some embodiments, the range hood 200 includes an air cabinet 202. The fan 201 is arranged in the air cabinet 202. The air outlet end of the air duct housing 20 extends into and is snap-fitted and limited in the air cabinet 202.

[0084] In the above embodiments, the air outlet end of the air duct housing 20 communicates with the air cabinet 202 of the range hood, and the fan 201 of the range hood is installed in the air cabinet 202. Therefore, the air duct housing 20 also communicates with the fan 201. By connecting the air duct housing 20 with the air cabinet 202, the communication between the air duct housing 20 and the fan 201 is realized. Compared with directly connecting to the fan 201, the assembly is more convenient, and it is also convenient to disassemble, which is more conducive to realizing the quick disassembly and assembly of the air duct structure. When the fan 201 is started, air with a relatively lower temperature in the external environment can be drawn in from the air inlet 21. After the incoming air is cooled by flowing through the cold-end radiator 13, it can be discharged together with the oil fume into the common flue or outdoors.

[0085] Specifically, the air duct housing 20 has an L-shaped housing body. The L-shaped housing body has a horizontal part and a vertical part. One end of the horizontal part is provided with an air inlet 21 and the other end is connected to the vertical part. The lower end of the vertical part is connected to the horizontal part and the upper end is provided with an air outlet 22. The upper end of the air duct housing 20 is inserted from the bottom of the air cabinet 202, and a snap-fitting structure for snap-fitting and limiting the air duct housing 20 is provided in the air cabinet 202.

[0086] In some embodiments, an insertion interface into which the air outlet end of the air duct housing 20 can extend is provided at the bottom of the air handling unit 202; an elastic abutting portion 2021 is provided in the insertion interface, and the elastic abutting portion 2021 is used to elastically abut against the outer wall of the air duct housing 20 to limit the air duct housing 20.

[0087] In the above embodiment, through the elastic abutting portion 2021 provided in the insertion interface, when the air outlet end of the air duct housing 20 is inserted into the air handling unit 202, the elastic abutting portion 2021 can abut against the air duct housing 20 under the action of its own elastic force, realizing the limitation of the air duct housing 20 and improving the structural stability of the air duct housing 20 in the air handling unit 202.

[0088] Specifically, there are two elastic abutting portions 2021, and the two elastic abutting portions 2021 are oppositely arranged and abut against the opposite outer walls of the air duct housing 20. The air handling unit 202 includes a rear side plate and a front side plate. The front side plate gradually extends obliquely towards the rear side plate from top to bottom, and a set gap is reserved between the lower end of the front side plate and the rear side plate, and this gap forms the insertion interface.

[0089] Furthermore, the elastic abutting portion 2021 includes a first elastic abutting portion 20211 provided on the rear side plate and a second elastic abutting portion 20212 provided on the front side plate. Among them, the first elastic abutting portion 20211 is formed by bending and extending from the lower edge of the rear side plate. Specifically, the lower edge of the rear side plate extends a set distance outward and then extends a set length downward, and then bends and extends towards the inside of the air handling unit 202; the second elastic abutting portion 20212 is fixedly provided inside the front side plate. Specifically, the second elastic abutting portion 20212 includes a connecting portion and an abutting portion arranged at a set angle. The connecting portion can be fixed to the front side plate by screws, and the abutting portion gradually extends obliquely towards the rear side plate from bottom to top. During assembly, the air outlet end of the air duct housing 20 is inserted into the air handling unit 202 from the insertion interface located behind the bottom of the air handling unit 202. During the insertion process, the air duct housing 20 will squeeze the two elastic abutting portions 2021. After being inserted, the two elastic abutting portions 2021 recover and deform under the action of their own elastic forces to tightly abut against the front and rear side walls of the air duct housing 20, realizing the limitation of the air duct housing 20 and preventing the air duct housing 20 from being unstable in position and shaking.

[0090] In some embodiments, a bending portion 26 is provided at the air outlet end of the air duct housing 20.

[0091] In the above embodiment, through the bending portion 26 provided at the air outlet end of the air duct housing 20, the bending portion 26 can be limited above the insertion interface, playing a role in preventing detachment and preventing the air duct housing 20 from being detached from the insertion interface, further improving the structural stability of the air duct housing 20.

[0092] Specifically, the air outlet end of the air duct housing 20 is bent towards the direction close to the front side plate to form a bent portion 26, and the bending length of the bent portion 26 is greater than the width of the insertion port, so as to play an effective role in limiting and preventing disconnection. More specifically, the bent portion 26 is formed by bending and extending the upper end of the vertical portion of the L-shaped housing body of the air duct housing 20 in the horizontal direction. The bent portion 26 and the horizontal portion of the L-shaped housing body are on the same side of the vertical portion. The air outlet 22 is arranged at the end of the bent portion 26, and the longitudinal section of the entire air duct housing 20 is U-shaped or C-shaped.

[0093] In some more preferred embodiments, a partition is movably arranged in the air duct housing 20. The partition has an open position for communicating the air inlet 21 and the air outlet 22, and a closed position for blocking the air inlet 21 and the air outlet 22. When it is necessary to extract air for heat dissipation from the cold end of the thermoelectric generation device 10, the partition is controlled to switch to the open position; when it is not necessary to extract air for heat dissipation from the cold end of the thermoelectric generation device 10, the partition is controlled to switch to the closed position, reducing the influence on the original oil fume extraction effect of the range hood 200, and at the same time achieving the purpose of saving energy consumption.

[0094] Optionally, the partition is rotatably connected in the air duct housing 20, and a driving mechanism for driving the partition to move between the closed position and the open position is arranged on the air duct housing 20, with a high degree of automation. Or, a drawing port is provided on the side wall of the air duct housing 20, and the partition can be inserted into or withdrawn from the air duct housing 20 through the drawing port, and the user can manually control whether to conduct the air duct housing 20, with a simple structure and low cost.

[0095] In this embodiment, in order to increase the temperature difference value between the hot end and the cold end of the thermoelectric generation device 10 and improve the power generation power of the thermoelectric generation chip 11, the heat dissipation structure is optimized at the cold end so that it can be combined with the range hood 200. The heat of the cold end of the thermoelectric generation device 10 is taken away by the fan 201 of the range hood 200, effectively reducing the temperature of the cold end of the thermoelectric generation device 10 and maintaining a relatively constant temperature value, causing a large temperature difference between the hot end and the cold end, and greatly improving the power generation power of the generation chip. By adopting the above heat dissipation method, not only can the cold end radiator 13 be well dissipated, but also the cost is relatively low, the structure is simple, easy to manufacture, and has high originality.

[0096] According to an embodiment of the present invention, on the other hand, an integrated device of a range hood and a gas stove is provided, including: a gas stove 100, a range hood 200, and the thermoelectric generation assembly according to any one of the above embodiments. The range hood 200 is arranged above the gas stove 100. The range hood 200 includes a fan 201; the thermoelectric generation device 10 of the thermoelectric generation assembly is installed on the gas stove 100, and the air duct structure is arranged between the thermoelectric generation device 10 and the fan 201.

[0097] The integrated range hood and gas stove device provided in this embodiment improves and optimizes the cold-end structure device and the heat dissipation method, increases the temperature difference value between the hot end and the cold end, and improves the power generation power of the power generation chip. The device mainly includes a range hood 200, a gas stove 100, a thermoelectric power generation device 10, and an air duct structure. The range hood 200 is mainly used to suck away the oil fume in the kitchen and the waste gas generated during the combustion of the gas stove 100; the gas stove 100 is mainly used to heat cooking utensils; the thermoelectric power generation device 10 mainly generates electricity by using the heat generated by the cooking of the gas stove 100; the air duct structure is arranged between the bottom of the gas stove 100 and the rear side of the range hood 200, and is mainly used to dissipate heat from the cold-end radiator 13 at the bottom of the gas stove 100.

[0098] Further, by connecting the air duct structure between the range hood 200 and the gas stove 100, the air inlet end of the air duct structure is arranged at the position of the cold-end radiator 13 at the bottom of the gas stove 100, and the air outlet end is arranged at the air cabinet 202 of the range hood 200. When the gas stove 100 and the range hood 200 are in use, the heat generated by the combustion of the burner 102 of the gas stove 100 is conducted to the hot-end collector 12 through the hot-end heat conduction pipe 14, which can rapidly increase the temperature of the hot-end collector 12. The heat absorption surface of the thermoelectric power generation chip 11 is arranged below the hot-end collector 12 and the hot-end heat conduction pipe 14. Therefore, the temperature of the hot surface of the thermoelectric power generation chip 11 will also increase accordingly; a cold-end radiator 13 is closely arranged on the cold surface of the thermoelectric power generation chip 11, which dissipates heat from the cold surface of the thermoelectric power generation chip 11 and reduces the temperature of the cold surface of the thermoelectric power generation chip 11. Since the air duct structure is arranged at the position of the cold-end radiator 13 and the air duct structure is also connected to the fan 201 of the range hood 200, when the range hood 200 is working, it can continuously suck away the heat of the cold-end radiator 13 and discharge it outdoors together with the oil fume and waste gas, so that the cold-end radiator 13 can continuously maintain a relatively low temperature. In this way, a large temperature difference can be generated between the hot surface and the cold surface of the thermoelectric power generation chip 11, greatly improving the power generation power of the thermoelectric power generation chip 11. This heat dissipation method can not only dissipate heat from the cold-end radiator 13 well, but also has a relatively low cost.

[0099] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the protection scope of the embodiments of this application.

Claims

1. A temperature difference power generation component, characterized in that: include: A temperature difference power generation device (10) comprises a temperature difference power generation sheet (11), a hot end heat collector (12), and a cold end radiator (13), wherein the hot end heat collector (12) is used to collect heat generated during combustion of a gas stove (100) and transfer the heat to the hot surface of the temperature difference power generation sheet (11), and the cold end radiator (13) is used to cool the cold surface of the temperature difference power generation sheet (11); The air duct structure is arranged between the cold end radiator (13) and the fan (201) of the range hood (200), and when the fan (201) is in operation, the heat of the cold end radiator (13) can be extracted through the air duct structure to increase the temperature difference between the hot surface and the cold surface.

2. The thermoelectric power generation assembly according to claim 1, characterized in that: The air duct structure comprises: An air duct housing (20) has an air inlet (21) connected to an external environment space at one end and an air outlet (22) connected to the fan (201) at the other end. The cold end radiator (13) is located in the air duct housing (20).

3. The thermoelectric power generation assembly according to claim 2, characterized in that: The cold end radiator (13) is located in the air duct housing (20) at one end close to the air inlet (21).

4. The thermoelectric power generation assembly according to claim 2, characterized in that: The temperature difference power generation device (10) is installed on the stove shell (101) of the gas stove (100); At least a heat dissipation portion (131) of the cold end radiator (13) is located outside the stove shell (101), and the air duct housing (20) is arranged outside the heat dissipation portion (131).

5. The thermoelectric power generation assembly according to claim 4, characterized in that: The temperature difference power generation device (10) is installed on the bottom wall of the stove shell (101); A connection opening (23) is provided on the top wall of the air inlet end of the air duct housing (20), and the heat dissipation part (131) of the cold end radiator (13) extends into the air duct housing (20) through the connection opening (23).

6. The thermoelectric power generation assembly according to claim 5, characterized in that: The connecting opening (23) is attached to and fixed on the bottom wall of the stove shell (101); And / or, at least one side of the connection opening (23) is provided with a positioning rib (24), and the positioning rib (24) is used to resist and limit the outer side of the side wall of the stove shell (101) to form a positioning.

7. The thermoelectric power generation assembly according to any one of claims 1 to 6, characterized in that: One end of the air duct structure is connected to the gas stove (100) by means of screws, and the other end is fixedly connected to the range hood (200) by means of a clamp.

8. The thermoelectric power generation assembly according to any one of claims 2 to 6, characterized in that: The range hood (200) comprises: A wind cabinet (202), wherein the fan (201) is arranged in the wind cabinet (202), and the air outlet end of the air duct housing (20) extends into and is clamped and limited in position in the wind cabinet (202).

9. The thermoelectric power generation assembly according to claim 8, characterized in that: The bottom of the wind cabinet (202) is provided with a plug-in interface into which the air outlet end of the air duct housing (20) can be inserted; An elastic abutment portion (2021) is provided in the plug-in port, and the elastic abutment portion (2021) is used to elastically abut against the outer wall of the air duct housing (20) to limit the position of the air duct housing (20); and / or a bending portion (26) is provided at the air outlet end of the air duct housing (20).

10. The thermoelectric power generation assembly according to any one of claims 1 to 6, characterized in that: The temperature difference power generation device (10) further comprises: A hot end heat conducting pipe (14) connected between the burner (102) of the gas stove (100) and the hot end heat collector (12); The hot end heat collector (12) and the hot end heat conducting pipe (14) are located above the thermoelectric power generation sheet (11) and are closely attached to the hot surface of the thermoelectric power generation sheet (11); The cold end heat sink (13) is arranged below the temperature difference power generation sheet (11) and is in close contact with the cold surface of the temperature difference power generation sheet (11).

11. An integrated device of a range hood and a gas stove, characterized in that: include: Gas stove (100); A range hood (200) is arranged above the gas stove (100), and the range hood (200) comprises a fan (201); The thermoelectric power generation assembly described in any one of claims 1 to 10 above, wherein the thermoelectric power generation device (10) of the thermoelectric power generation assembly is installed on the gas stove (100), and the air duct structure is arranged between the thermoelectric power generation device (10) and the fan (201).

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