A thermoelectric power generation device and a gas stove

Abstract

The present invention provides a thermoelectric power generation device and a gas stove. The thermoelectric power generation device includes a heat conductor, a thermoelectric power generation sheet and a radiator. The heat conductor contacts the hot end of the thermoelectric power generation sheet, the proximal end of the radiator contacts the cold end of the thermoelectric power generation sheet and the distal end faces away from the cold end of the thermoelectric power generation sheet. The proximal end of the radiator is provided with a first heat dissipation structure, and the distal end is provided with a second heat dissipation structure that keeps in contact with the first heat dissipation structure. The first heat dissipation structure and the second heat dissipation structure can move relative to each other in the near and far directions, so that the distance between the proximal end and the distal end of the radiator can be adjusted. Therefore, even if the distance between the stove head and the bottom shell of different models of gas stoves is different, the overall size of the thermoelectric power generation device can be changed by adjusting the distance between the proximal end and the distal end of the radiator, and then the heat conductor contacts the stove head, and the distal end of the radiator contacts the bottom shell, so that the thermoelectric power generation device can be installed between the stove head and the bottom shell at different distances, respectively, and is suitable for gas stoves with different distances between the stove head and the bottom shell.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation devices, and in particular to a thermoelectric power generation device and a gas stove. Background Art

[0002] Traditional electronic gas stoves require batteries to start the ignition device. Generally speaking, the battery power of the gas stove will be exhausted after a few months of use, and the battery needs to be replaced frequently.

[0003] With the continuous improvement of gas stoves, there is a gas stove that does not need to replace batteries frequently. It is equipped with a thermoelectric power generation device and a rechargeable battery. The thermoelectric power generation device includes a heat conductor, a thermoelectric power generation sheet and a radiator. The heat conductor contacts the hot end of the thermoelectric power generation sheet, and the radiator contacts the cold end of the thermoelectric power generation sheet. The thermoelectric power generation device is installed between the stove head and the bottom shell of the gas stove, and the heat conductor contacts the stove head, and the radiator contacts the bottom shell. When the gas stove is in use, the ignition device is started by the rechargeable battery, and the ignition device ignites the stove head. After the stove head is ignited, its temperature rises rapidly, and the temperature of the heat conductor directly in contact with the stove head also rises rapidly, so that the temperature of the hot end of the thermoelectric power generation sheet rises. At this time, since the radiator contacts the cold end of the thermoelectric power generation sheet, and the radiator contacts the bottom shell of the gas stove, the cold end of the thermoelectric power generation sheet can dissipate heat through the radiator and the bottom shell of the gas stove, and the temperature is reduced. In this way, there is a certain temperature difference between the hot end and the cold end of the thermoelectric power generation sheet, so that the thermoelectric power generation sheet can continue to generate electricity to charge the rechargeable battery. Therefore, each time the gas stove is used, the rechargeable battery is charged through the thermoelectric power generation device, so that the power of the rechargeable battery is continuously replenished without frequent replacement.

[0004] When the existing thermoelectric power generation device is in use, the heat conductor needs to contact the stove head of the gas stove, and the radiator needs to contact the bottom shell of the gas stove, that is, the thermoelectric power generation device needs to be installed between the stove head and the bottom shell of the gas stove, so that the temperature difference between the hot end and the cold end of the thermoelectric power generation sheet can be achieved to generate electricity to charge the rechargeable battery. However, the distance between the stove head and the bottom shell of different models of gas stoves may be different, but the size of the existing thermoelectric power generation device is fixed. If used on a gas stove with a large distance between the stove head and the bottom shell, the existing thermoelectric power generation device is relatively small in size and it is difficult to achieve the simultaneous contact of the heat conductor with the stove head and the radiator with the bottom shell. If used on a gas stove with a small distance between the stove head and the bottom shell, the existing thermoelectric power generation device is relatively large in size and it is difficult to be installed between the stove head and the bottom shell of the gas stove for use, that is, the existing thermoelectric power generation device is difficult to be applied to gas stoves with different distances between the stove head and the bottom shell. Summary of the invention

[0005] The technical problem to be solved by the present invention is how to make the thermoelectric power generation device applicable to gas stoves with different distances between the stove head and the bottom shell.

[0006] In order to solve the above technical problems, the present invention provides a thermoelectric power generation device, including a heat conductor, a thermoelectric power generation sheet and a heat sink, wherein the heat conductor contacts the hot end of the thermoelectric power generation sheet, the proximal end of the heat sink contacts the cold end of the thermoelectric power generation sheet and the distal end faces away from the cold end of the thermoelectric power generation sheet, a first heat dissipation structure is provided on the proximal end of the heat sink, and a second heat dissipation structure that maintains contact with the first heat dissipation structure is provided on the distal end, the first heat dissipation structure and the second heat dissipation structure can move relative to each other in the proximal and proximal directions, so that the distance between the proximal end and the distal end of the heat sink can be adjusted.

[0007] Preferably, an elastic member for resetting is provided between the proximal end and the distal end of the heat sink.

[0008] Preferably, the elastic member is a coil spring, two ends of which are respectively connected to the proximal end and the distal end of the heat sink.

[0009] Preferably, the first heat dissipation structure includes a plurality of heat dissipation fins, the second heat dissipation structure includes a plurality of heat dissipation fins, and the first heat dissipation structure and the second heat dissipation structure are in contact with each other through the heat dissipation fins.

[0010] Preferably, it includes a sleeve sleeved on the outside of the thermoelectric power generation sheet, the heat conductive member is fixed to the first open end of the sleeve, the second open end of the sleeve is provided with a support portion, the proximal end of the heat sink extends into the sleeve over the support portion, a compression spring is provided between the proximal end of the heat sink and the support portion, and the compression spring applies a thrust toward the cold end of the thermoelectric power generation sheet to the proximal end of the heat sink, so that the proximal end of the heat sink and the heat conductive member clamp the thermoelectric power generation sheet.

[0011] Preferably, a first limiting column is provided on the proximal end of the radiator and passes through the supporting portion toward the distal end. The first limiting column is used to limit the relative movement of the first heat dissipation structure and the second heat dissipation structure in the distal direction to prevent the proximal end and the distal end of the radiator from being too close. The compression spring is sleeved on the outside of the first limiting column.

[0012] Preferably, the heat conducting member also serves as a cover plate to cover the first open end of the sleeve.

[0013] Preferably, the sleeve is provided with a wiring through hole for exposing the thermoelectric power generation sheet laterally.

[0014] Preferably, a first limiting column facing the distal end is provided on the proximal end of the radiator, and a second limiting column facing the proximal end is provided on the distal end of the radiator, the first limiting column and the second limiting column are aligned with each other, and the sum of the lengths of the first limiting column and the second limiting column is greater than the first heat dissipation structure and greater than the second heat dissipation structure.

[0015] The present invention also provides a gas stove, comprising a stove head, a bottom shell, a thermoelectric power generation device, an ignition device and a rechargeable battery, wherein the thermoelectric power generation device charges the rechargeable battery, the rechargeable battery supplies power to the ignition device, the ignition device is installed on the stove head to ignite the stove head, the thermoelectric power generation device is installed between the stove head and the bottom shell, the thermoelectric power generation device is as described above, the heat conductive part of the thermoelectric power generation device contacts the stove head, and the distal end of the radiator of the thermoelectric power generation device contacts the bottom shell.

[0016] The present invention has the following beneficial effects: since the first heat dissipation structure and the second heat dissipation structure can be relatively moved in the far and near directions, the distance between the proximal end and the distal end of the radiator can be adjusted. Therefore, even if the distances between the stove heads and the bottom shells of different models of gas stoves are different, the overall size of the thermoelectric power generation device can be changed by adjusting the distance between the proximal end and the distal end of the radiator. Then, the heat conductive member is made to contact the stove head, and the distal end of the radiator is made to contact the bottom shell, so that the thermoelectric power generation device can be respectively installed between the stove heads and the bottom shells with different distances between them. The thermoelectric power generation device is suitable for gas stoves with different distances between the stove heads and the bottom shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a thermoelectric power generation device.

[0018] Figure 2 It is a structural explosion diagram of a thermoelectric power generation device.

[0019] Figure 3 It is a schematic longitudinal section diagram of a thermoelectric power generation device.

[0020] Figure 4 It is a schematic diagram of a gas stove using a thermoelectric power generation device.

[0021] Figure 5 It is a schematic diagram of the internal structure of a gas stove using a thermoelectric power generation device.

[0022] Explanation of the reference numerals: 1-heat conducting member; 2-temperature difference power generation sheet; 3-heat sink; 31-proximal end; 32-distal end; 33-first heat dissipation structure; 34-second heat dissipation structure; 35-elastic member; 36-first limiting column; 37-second limiting column; 4-sleeve; 41-supporting portion; 42-compression spring; 43-wiring through hole; 5-screw; 101-stove head; 102-bottom shell; 103-thermoelectric power generation device; 104-ignition device. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with specific implementation methods.

[0024] Thermoelectric power generation devices such as Figure 1 , Figure 2 and Figure 3As shown, it includes a heat conductor 1, a thermoelectric power generation sheet 2, a heat sink 3 and a sleeve 4. The sleeve 4 is annular, with its first open end facing upward and its second open end facing downward, and is sleeved on the outside of the thermoelectric power generation sheet 2. The thermoelectric power generation sheet 2 has a hot end facing upward and a cold end facing downward. If there is a temperature difference between the hot end and the cold end, the thermoelectric power generation sheet 2 can generate electricity, and the voltage is positively correlated with the temperature difference. The sleeve 4 is provided with a wiring through hole 43 for the thermoelectric power generation sheet 2 to be exposed laterally. The thermoelectric power generation sheet 2 can be connected to a rechargeable battery through the wiring through hole 43 to charge it. The heat conductor 1 is a cover plate, which covers the first open end of the sleeve 4 and is fixed by four screws 5, contacts the hot end of the thermoelectric power generation sheet 2, and can conduct external heat to the hot end of the thermoelectric power generation sheet 2; the heat sink 3 extends from the second open end of the sleeve 4 into the sleeve 4 to contact the cold end of the thermoelectric power generation sheet 2.

[0025] The heat sink 3 includes a proximal portion 31, a distal portion 32, a first heat dissipation structure 33, a second heat dissipation structure 34, an elastic member 35, a first limiting column 36 and a second limiting column 37, wherein the first limiting column 36 and the second limiting column 37 each have four. Figure 1 , Figure 2 , Figure 3 Only two of them are shown due to viewing angle. The first heat dissipation structure 33 and the first limiting column 36 are arranged on the proximal portion 31, facing the distal portion 32; the second heat dissipation structure 34 and the second limiting column 37 are arranged on the distal portion 32, facing the proximal portion 31. The first heat dissipation structure 33 includes a plurality of heat dissipation fins arranged on the proximal portion 31, and the second heat dissipation structure 34 includes a plurality of heat dissipation fins arranged on the distal portion 32. The number of heat dissipation fins of the first heat dissipation structure 33 and the number of heat dissipation fins of the second heat dissipation structure 34 are equal, and the positions correspond one to one. The plurality of heat dissipation fins of the first heat dissipation structure 33 are arranged at the same interval, which is greater than the thickness of the heat dissipation fins of the second heat dissipation structure 34; the plurality of heat dissipation fins of the second heat dissipation structure 34 are arranged at the same interval, which is greater than the thickness of the heat dissipation fins of the first heat dissipation structure 33. The plurality of heat dissipation fins of the first heat dissipation structure 33 and the plurality of heat dissipation fins of the second heat dissipation structure 34 are in staggered contact with each other, and the first heat dissipation structure 33 and the second heat dissipation structure 34 can move relative to each other in the near and far directions along the contact surface of the heat dissipation fins, so that the distance between the proximal portion 31 and the distal portion 32 is adjustable.

[0026] In this embodiment, the elastic member 35 is a coil spring, which is located between the proximal end 31 and the distal end 32 of the radiator 3, and is sleeved in the multiple heat sinks of the first heat dissipation structure 33 and the multiple heat sinks of the second heat dissipation structure 34, and the two ends of the elastic member 35 are respectively connected to the proximal end 31 and the distal end 32; the first limit column 36 and the second limit column 37 are aligned with each other, and the sum of the lengths of the first limit column 36 and the second limit column 37 is greater than the first heat dissipation structure 33, and greater than the second heat dissipation structure 34. If the first heat dissipation structure 33 and the second heat dissipation structure 34 move relative to each other in the near and far direction, the elastic member 35 can prevent the near end portion 31 and the far end portion 32 from being too far apart, because its two ends are respectively connected to the near end portion 31 and the far end portion 32, thereby preventing the multiple heat dissipation fins of the first heat dissipation structure 33 and the multiple heat dissipation fins of the second heat dissipation structure 34 from being separated from each other, so that the first heat dissipation structure 33 and the second heat dissipation structure 34 remain in contact; and the first limiting column 36 and the second limiting column 37 can prevent the near end portion 31 and the far end portion 32 from being too close apart, thereby preventing the heat dissipation fins of the first heat dissipation structure 33 from hitting the far end portion 32 and being damaged, or the heat dissipation fins of the second heat dissipation structure 34 from hitting the near end portion 31 and being damaged. After the first heat dissipation structure 33 and the second heat dissipation structure 34 move relative to each other in the near and far direction, the elastic member 35 can reset the first heat dissipation structure 33 and the second heat dissipation structure 34.

[0027] The second open end of the sleeve 4 is provided with four support portions 41 ( Figure 1 , Figure 2 , Figure 3 Due to the perspective, only two of the support portions 41 are shown. The heat sink 3 described above extends from the second opening end of the sleeve 4 into the sleeve 4 to contact the cold end of the thermoelectric power generation sheet 2. Specifically, the proximal end 31 of the heat sink 3 passes over the support portion 41 and extends into the sleeve 4 to contact the cold end of the thermoelectric power generation sheet 2. Figure 3 The four first limiting columns 36 on the proximal portion 31 of the heat sink 3 pass through the four supporting portions 41 respectively, and a compression spring 42 is provided between the proximal portion 31 and the four supporting portions 41 and is sleeved on the outside of the first limiting columns 36. The four compression springs 42 apply a thrust toward the cold end of the thermoelectric power generation sheet 2 to the proximal portion 31, so that the proximal portion 31 and the heat conducting member 1 clamp the thermoelectric power generation sheet 2.

[0028] The thermoelectric power generation device provided in this embodiment is applied to a gas stove and is installed between the stove head and the bottom shell of the gas stove when in use. In the thermoelectric power generation device, since the first heat dissipation structure 33 and the second heat dissipation structure 34 can move relative to each other in the far and near directions, the distance between the proximal end 31 and the distal end 32 of the radiator 3 can be adjusted. Therefore, even if the distances between the stove heads and the bottom shells of different models of gas stoves are different, the overall size of the thermoelectric power generation device can be changed by adjusting the distance between the proximal end 31 and the distal end 32 of the radiator 3. Then, the heat conductive member 1 is made to contact the stove head, and the distal end 32 of the radiator 3 is made to contact the bottom shell, so that the thermoelectric power generation device can be installed respectively between the stove head and the bottom shell at different distances, and is suitable for gas stoves with different distances between the stove head and the bottom shell. For example, a gas stove such as Figure 4 and Figure 5 As shown, it includes a stove head 101, a bottom shell 102, a thermoelectric power generation device 103, an ignition device 104 and a rechargeable battery (not shown in the figure). The thermoelectric power generation device 103 charges the rechargeable battery, and the rechargeable battery supplies power to the ignition device 104. The ignition device 104 is installed on the stove head 101 to ignite the stove head 101. When installing the thermoelectric power generation device 103, the user can push the distal end 32 of the radiator 3 to make the first heat dissipation structure 33 and the second heat dissipation structure 34 move relative to each other in the distal direction, thereby shortening the distance between the proximal end 31 and the distal end 32, and then place the thermoelectric power generation device 103 between the stove head 101 and the bottom shell 102, and then loosen the distal end 32 of the radiator 3, so that the first heat dissipation structure 33 and the second heat dissipation structure 34 are reset under the action of the elastic member 35, so that the heat conductive member 1 of the thermoelectric power generation device 103 is pressed against the stove head 101 of the gas stove, and the distal end 32 of the radiator 3 of the thermoelectric power generation device 103 is pressed against the bottom shell 102, and the thermoelectric power generation device 103 is now installed on the gas stove. When the gas stove is in use, after the ignition device 104 ignites the stove head 101, the temperature of the stove head 101 rises rapidly, so that in the thermoelectric power generation device 103, the temperature of the heat conductor 1 in contact with the stove head 101 also rises rapidly, causing the temperature of the hot end of the thermoelectric power generation sheet 2 to rise. Since the proximal end 31 of the radiator 3 contacts the cold end of the thermoelectric power generation sheet 2, and the distal end 32 contacts the bottom shell 102 of the gas stove, the cold end of the thermoelectric power generation sheet 2 can dissipate heat through the radiator 3 and the bottom shell 102 of the gas stove, and the temperature is reduced. In this way, there is a certain temperature difference between the hot end and the cold end of the thermoelectric power generation sheet 2, so that the thermoelectric power generation sheet 2 can generate electricity to charge the rechargeable battery.

[0029] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.

Claims

1. A thermoelectric power generation device, comprising a heat conducting member (1), a thermoelectric power generation sheet (2) and a heat sink (3), wherein the heat conducting member (1) contacts the hot end of the thermoelectric power generation sheet (2), a proximal end (31) of the heat sink (3) contacts the cold end of the thermoelectric power generation sheet (2) and a distal end (32) faces away from the cold end of the thermoelectric power generation sheet (2), wherein: The heat sink (3) has a first heat dissipation structure (33) on the proximal end (31), and a second heat dissipation structure (34) in contact with the first heat dissipation structure (33) on the distal end (32); the first heat dissipation structure (33) and the second heat dissipation structure (34) can move relative to each other in a proximal direction, so that the distance between the proximal end (31) and the distal end (32) of the heat sink (3) is adjustable; the heat sink (3) comprises a sleeve (4) sleeved on the outside of the temperature difference power generation sheet (2); the heat conduction member (1) is fixed to a first open end of the sleeve (4); a support portion (41) is provided at a second open end of the sleeve (4); the proximal end (31) of the heat sink (3) extends into the sleeve (4) beyond the support portion (41); the proximal end (31) of the heat sink (3) and the support portion (41) are in contact with each other; A compression spring (42) is provided between the proximal end portion (31) of the heat sink (3) and the distal end portion (32), the compression spring (42) applying a thrust force to the proximal end portion (31) of the heat sink (3) towards the cold end of the temperature difference power generation sheet (2), so that the proximal end portion (31) of the heat sink (3) and the heat conductive member (1) clamp the temperature difference power generation sheet (2), the proximal end portion (31) of the heat sink (3) is provided with a first limiting column (36) passing through the support portion (41) towards the distal end portion (32), the first limiting column (36) is used to limit the relative movement of the first heat dissipation structure (33) and the second heat dissipation structure (34) in the distal direction, so as to prevent the proximal end portion (31) and the distal end portion (32) of the heat sink (3) from being too close to each other, and the compression spring (42) is sleeved on the outside of the first limiting column (36).

2. The thermoelectric power generation device according to claim 1, characterized in that: An elastic member (35) for resetting is provided between the proximal end portion (31) and the distal end portion (32) of the heat sink (3).

3. The thermoelectric power generation device according to claim 2, characterized in that: The elastic member (35) is a coil spring, and its two ends are respectively connected to the proximal end (31) and the distal end (32) of the heat sink (3).

4. The thermoelectric power generation device according to claim 1, characterized in that: The first heat dissipation structure (33) comprises a plurality of heat dissipation fins, the second heat dissipation structure (34) comprises a plurality of heat dissipation fins, and the first heat dissipation structure (33) and the second heat dissipation structure (34) are specifically kept in contact via the heat dissipation fins.

5. The thermoelectric power generation device according to claim 1, characterized in that: The heat conducting member (1) also serves as a cover plate, covering the first opening end of the sleeve (4).

6. The thermoelectric power generation device according to claim 1, characterized in that: The sleeve (4) is provided with a wiring through hole (43) for allowing the temperature difference power generation sheet (2) to be exposed laterally.

7. The thermoelectric power generation device according to claim 1, characterized in that: A second limiting column (37) is provided on the distal end portion (32) of the radiator (3) and is directed toward the proximal end portion (31); the first limiting column (36) and the second limiting column (37) are aligned with each other; and the sum of the lengths of the first limiting column (36) and the second limiting column (37) is greater than the first heat dissipation structure (33) and greater than the second heat dissipation structure (34).

8. A gas stove, comprising a stove head (101), a bottom shell (102), a thermoelectric power generation device (103), an ignition device (104) and a rechargeable battery, wherein the thermoelectric power generation device (103) charges the rechargeable battery, the rechargeable battery supplies power to the ignition device (104), the ignition device (104) is mounted on the stove head (101) to ignite the stove head (101), and the thermoelectric power generation device (103) is mounted between the stove head (101) and the bottom shell (102), wherein the gas stove is characterized in that: The thermoelectric power generation device (103) is the thermoelectric power generation device according to any one of claims 1 to 7, the heat conducting member (1) of the thermoelectric power generation device (103) contacts the stove head (101), and the distal end portion (32) of the heat sink (3) of the thermoelectric power generation device (103) contacts the bottom shell (102).

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