Groove bottom air duct and drying sink

Abstract

The utility model relates to kitchen utensil technical field discloses a kind of groove bottom air duct and drying sink, groove bottom air duct is installed in the bottom of sink, groove bottom air duct includes heating shell and heat preservation shell, heating shell is set to the bottom of sink and is formed heating cavity between with sink;Heat preservation shell cover is set to the bottom of heating shell, and heat insulation cavity is formed between the bottom wall of heat preservation shell and heating shell, and the circumferential sidewall between heat preservation shell and heating shell forms the air outlet gap of intercommunication heat insulation cavity.This groove bottom air duct has double-layer cavity structure, the bottom wall of sink is heated and dried by heating cavity, and gas in heat insulation cavity can be heated, and the sidewall of sink is heated and dried by the air outlet gap of heated gas;Heat insulation cavity can play the role of heat insulation to heating cavity, improve heating efficiency.Drying sink realizes sink high-efficiency drying by above-mentioned groove bottom air duct, avoid sink to breed bacteria and mildew, facilitate to create healthy kitchen.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils technology, and in particular to a bottom air duct and a drying sink. Background Technology

[0002] A sink is an essential appliance in the kitchen. Because it is in a humid environment, it is prone to bacterial growth and mold if it cannot be dried in time. In order to avoid the growth of bacteria and mold in the sink, existing technology has designed sinks with drying functions.

[0003] In existing technologies, water tanks are dried by installing a heating chamber at the bottom of the tank, within which a heating element is placed. This heating element dries the water, preventing bacterial and mold growth. Because the heating chamber is located at the bottom, the heating element directly heats the bottom wall of the tank, making heating convenient and efficient. However, the side walls require heat to be conducted through the bottom wall, resulting in less efficient heating of the side walls.

[0004] Therefore, how to better achieve the drying and heating of the water tank has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to propose a bottom air duct and a drying water tank, which solves the technical problem that the heating efficiency of the side wall of the water tank is poor when the water tank is dried by setting a heating chamber at the bottom of the water tank.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a bottom ventilation duct, which is configured to be installed at the bottom of a water tank, and the bottom ventilation duct includes:

[0008] A heating housing and an insulation housing, wherein the heating housing is disposed at the bottom of the water tank and forms a heating cavity therebetween with the water tank;

[0009] The heat-insulating shell is covered by the bottom of the heating shell, and a heat-insulating cavity is formed between the bottom wall of the heat-insulating shell and the heating shell. An air outlet gap is formed between the circumferential side wall of the heat-insulating shell and the heating shell, which communicates with the heat-insulating cavity.

[0010] The bottom air duct includes a water tank, a heating shell, and an insulation shell. A heating chamber is formed between the heating shell and the water tank, which dries and heats the bottom wall of the water tank. A heat insulation chamber is formed between the bottom wall of the insulation shell and the heating shell, creating a heat exchange zone for heat exchange with the bottom wall of the heating shell. An air outlet gap is formed between the circumferential side walls of the insulation shell and the heating shell, connecting the heat insulation chamber. Hot air from the heat insulation chamber is output through the air outlet gap, drying and heating the side walls of the water tank, thus achieving drying and heating of the entire water tank and improving drying efficiency. This bottom air duct has a double-layer cavity structure. It dries and heats the bottom wall of the water tank through the heating chamber and also heats the gas in the heat insulation chamber. The heated gas dries and heats the side walls of the water tank through the air outlet gap, improving the drying efficiency of the water tank. In addition, the heat insulation chamber also insulates and heats the heating chamber, improving the heating efficiency within the heating chamber.

[0011] As a preferred embodiment of the aforementioned bottom air duct, the insulation shell includes:

[0012] The heat-insulating bottom wall is located below the bottom wall of the heating shell and is spaced apart from the bottom wall of the heating shell;

[0013] An insulated sidewall is provided on the circumference of the insulated bottom wall, and there is a gap between the insulated sidewall and the circumferential sidewall of the heating shell to form the air outlet gap.

[0014] The insulated bottom wall can play a role in heat insulation. An air outlet gap is formed between the insulated side wall and the circumferential side wall of the heating shell, which can output the gas in the heat insulation cavity through the air outlet gap, thereby heating and drying the side wall of the water tank.

[0015] As a preferred embodiment of the aforementioned bottom air duct, the end of the insulation sidewall that is not connected to the insulation bottom wall is inclined from bottom to top toward the interior of the heat insulation cavity.

[0016] The above setup can guide the output hot air, directing it towards the side wall of the water tank, thereby heating and drying the side wall and improving drying efficiency.

[0017] As a preferred embodiment of the aforementioned bottom air duct, the top surface of the insulated sidewall is higher than the bottom wall of the water tank.

[0018] The top surface of the insulated sidewall is higher than the bottom wall of the water tank, so that hot air can be blown onto the sidewall of the water tank through the air outlet gap to heat and dry the sidewall of the water tank.

[0019] As a preferred embodiment of the aforementioned bottom air duct, the insulation shell is provided with an air inlet that communicates with the heat insulation cavity.

[0020] Air is introduced into the insulation cavity through the air inlet to replenish the insulation cavity, and then the air is continuously output to the outside through the air outlet gap.

[0021] As a preferred embodiment of the aforementioned bottom air duct, a heating device is provided inside the heating chamber. The heating device includes a fan, a heating component, and a heating air duct. The air inlet of the fan is connected to the air inlet channel of the drying water tank, and the air outlet of the fan is connected to the heating air duct. The heating component is disposed inside the heating air duct and located at the air outlet of the fan. The heating component is used to heat the air blown out by the fan.

[0022] The heating element heats the air blown out by the fan, and the heated air is then blown into the heating duct by the fan and then delivered into the heating chamber.

[0023] As a preferred embodiment of the aforementioned bottom air duct, the heating chamber is provided with air guide ribs, one end of which is provided corresponding to the air outlet of the heating air duct, so as to divide the heating chamber into multiple heat-conducting air ducts.

[0024] The heating chamber is divided into multiple heat-conducting air ducts by air guide ribs. These multiple heat-conducting air ducts can guide the hot air output from the heating air ducts, achieving uniform drying of the bottom wall of the water tank and improving drying efficiency.

[0025] As a preferred embodiment of the aforementioned bottom air duct, the other end of the air guide rib extends to the air inlet of the fan, the outlet of each of the heat-conducting air ducts is connected to the air inlet of the fan, and the heating device and the heat-conducting air ducts form a circulating air duct.

[0026] The outlet of the heat-conducting air duct is connected to the air inlet of the fan, so that the heating device and the heat-conducting air duct form a circulating air duct, which can achieve circulating heating of the heating chamber.

[0027] As a preferred embodiment of the aforementioned bottom air duct, a heat insulation plate is provided inside the heating chamber at the air outlet of the heating air duct, and the heat insulation plate is disposed between the bottom wall of the water tank and the air guide rib.

[0028] The heat insulation plate is installed at the air outlet of the heating air duct and is located between the bottom wall of the water tank and the air guide rib. It can exchange heat with the high temperature hot air at the air outlet of the heating air duct, and avoid the high temperature hot air directly contacting the bottom wall of the water tank, which would cause the bottom wall of the water tank to be too hot and thus cause a safety accident.

[0029] This utility model also provides a bottom ventilation duct, including a water tank and the aforementioned bottom ventilation duct, wherein the bottom ventilation duct is disposed at the bottom of the water tank.

[0030] The bottom air duct of the tank can efficiently dry the bottom and side walls of the tank.

[0031] The beneficial effects of this utility model are:

[0032] This utility model proposes a bottom-mounted air duct, comprising a water tank, a heating shell, and an insulation shell. A heating chamber is formed between the heating shell and the water tank, through which the bottom wall of the water tank is dried and heated. A heat-insulating chamber is formed between the bottom wall of the insulation shell and the heating shell, forming a heat exchange zone for heat exchange with the bottom wall of the heating shell. An air outlet gap is formed between the circumferential side walls of the insulation shell and the heating shell, connecting the heat-insulating chamber. Hot air from the heat-insulating chamber is output through the air outlet gap, drying and heating the side walls of the water tank, thereby achieving drying and heating of the entire water tank and improving drying efficiency. This bottom-mounted air duct has a double-layer cavity structure. It dries and heats the bottom wall of the water tank through the heating chamber and can also heat the gas in the heat-insulating chamber. The heated gas dries and heats the side walls of the water tank through the air outlet gap, improving the drying efficiency of the water tank. In addition, the heat-insulating chamber can insulate and heat the heating chamber, improving the heating efficiency within the heating chamber.

[0033] This utility model also provides a drying sink, which can efficiently dry the bottom and side walls of the sink through the aforementioned bottom air duct, preventing bacteria and mold growth in the sink and facilitating the creation of a healthy kitchen. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the drying tank provided by this utility model;

[0035] Figure 2 This is a cross-sectional view of the drying tank provided by this utility model;

[0036] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is a schematic diagram showing the internal structure of the heating cavity provided by this utility model;

[0038] Figure 5 This is a schematic diagram of the first structure of the heating chamber provided by this utility model after the heat insulation plate has been removed;

[0039] Figure 6 This is a schematic diagram of the second structure of the heating chamber provided by this utility model after the heat insulation plate has been removed.

[0040] In the picture:

[0041] 100. Bottom ventilation duct; 200. Water tank;

[0042] 11. Heating shell; 110. Heating cavity; 111. Heating bottom wall; 112. Heating side wall;

[0043] 12. Insulation shell; 1201. Thermal insulation cavity; 1202. Air outlet gap; 121. Insulation bottom wall; 122. Insulation side wall;

[0044] 13. Heating device; 131. Fan; 132. Heating component; 133. Heating air duct; 1341. First air guide rib; 1342. Second air guide rib; 1343. Third air guide rib; 1351. First heat conduction air duct; 1352. Second heat conduction air duct; 1353. Third heat conduction air duct; 1354. Fourth heat conduction air duct; 1361. First baffle rib; 1362. Second baffle rib;

[0045] 14. Heat insulation board. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] like Figure 1 As shown, this embodiment provides a drying water tank, including a water tank 200 and a bottom air duct 100 disposed at the bottom of the water tank 200. The water tank 200 is dried and heated through the bottom air duct 100 to avoid the growth of bacteria.

[0051] Existing technologies for drying water tanks involve installing a heating chamber at the bottom of the tank to heat and dry it. While this method is convenient for heating the bottom wall of the tank, it is less efficient at heating the side walls.

[0052] To solve the above problems, such as Figures 1-3 As shown, this embodiment provides a bottom air duct 100, which is disposed at the bottom of a water tank 200. The bottom air duct 100 includes a heating shell 11 and an insulation shell 12. The heating shell 11 is disposed at the bottom of the water tank 200 and forms a heating cavity 110 with the water tank 200. The insulation shell 12 covers the bottom of the heating shell 11, and a heat insulation cavity 1201 is formed between the bottom walls of the insulation shell 12 and the heating shell 11. An air outlet gap 1202 is formed between the circumferential side walls of the insulation shell 12 and the heating shell 11, which communicates with the heat insulation cavity 1201.

[0053] A heating chamber 110 is formed between the heating shell 11 of the bottom air duct 100 and the water tank 200, through which the bottom wall of the water tank 200 is heated; a heat insulation chamber 1201 is formed between the bottom wall of the insulation shell 12 and the heating shell 11, forming a heat exchange zone that exchanges heat with the bottom wall of the heating shell 11; an air outlet gap 1202 is formed between the circumferential side wall of the insulation shell 12 and the heating shell 11, connecting the heat insulation chamber 1201, through which hot air is output from the heat insulation chamber 1201, and the hot air is used to dry and heat the side wall of the water tank 200, thereby achieving drying and heating of the entire water tank 200 and improving drying efficiency. The bottom air duct 100 has a double-layer cavity structure. The heating cavity 110 dries and heats the bottom wall of the sink 200, and it also heats the gas inside the heat-insulating cavity 1201. This heated gas, through the air outlet gap 1202, dries and heats the side walls of the sink 200, improving the drying efficiency. Additionally, the heat-insulating cavity 1201 insulates the heating cavity 110, further improving its heating efficiency. The bottom air duct 100 efficiently dries the sink 200, preventing bacterial and mold growth and facilitating a healthy kitchen.

[0054] like Figure 3 As shown, the heating housing 11 includes a heating bottom wall 111 and heating side walls 112. Each side of the heating bottom wall 111 is provided with a heating side wall 112. In this embodiment, the heating bottom wall 111 has a rectangular structure, and there are four heating side walls 112, namely a front side wall, a rear side wall, a left side wall, and a right side wall. The bottom wall of the water tank 200, the heating bottom wall 111, and the heating side walls 112 form a heating cavity 110.

[0055] like Figure 3 As shown, the heat-insulating shell 12 includes a heat-insulating bottom wall 121 and a heat-insulating side wall 122. The heat-insulating bottom wall 121 is located below the heating bottom wall 111 and is spaced apart from the heating bottom wall 111. The heat-insulating side wall 122 is arranged circumferentially around the heat-insulating bottom wall 121, and there is a gap between the heat-insulating side wall 122 and the heating side wall 112 to form an air outlet gap 1202. The heat-insulating bottom wall 121 can play a role in heat insulation, and the air outlet gap 1202 formed between the heat-insulating side wall 122 and the heating side wall 112 can output the gas in the heat-insulating cavity 1201 through the air outlet gap 1202, thereby heating and drying the side wall of the water tank 200.

[0056] Furthermore, the end of the insulating sidewall 122 that is not connected to the insulating bottom wall 121 (i.e., the top of the insulating sidewall 122) slopes upwards towards the water tank 200. This arrangement guides the output hot air, directing it towards the sidewall of the water tank 200, thereby heating and drying the sidewall of the water tank 200 and improving drying efficiency.

[0057] Preferably, the top surface of the heat-insulating sidewall 122 is higher than the bottom wall of the water tank 200, so that hot air can be blown onto the sidewall of the water tank 200 through the air outlet gap 1202 to heat and dry the sidewall of the water tank 200.

[0058] Optionally, the insulation shell 12 is provided with an air inlet (not shown in the figure) that communicates with the heat insulation cavity 1201. Air is introduced into the heat insulation cavity 1201 through the air inlet to replenish the heat insulation cavity 1201, and then the air can be continuously output to the outside through the air outlet gap 1202.

[0059] like Figure 4 and Figure 5 As shown, a heating device 13 is installed inside the heating chamber 110. The heating device 13 includes a fan 131, a heating element 132, and a heating air duct 133. The air inlet of the fan 131 is connected to the air inlet channel of the drying water tank, and the air outlet of the fan 131 is connected to the heating air duct 133. The heating element 132 is installed inside the heating air duct 133 and located at the air outlet of the fan 131. The heating element 132 is used to heat the air blown out by the fan 131. The air blown out by the fan 131 can be heated by the heating element 132, and the heated air is blown into the heating chamber 110 by the fan 131. The air inlet channel of the drying water tank is used to provide air to the fan 131. The specific structure is not specifically limited, as long as it can be connected to the air inlet of the fan 131 to provide gas to the fan 131.

[0060] Optionally, such as Figure 5 and Figure 6 As shown, the heating chamber 110 is equipped with air guide ribs. The top of the air guide ribs abuts against the bottom wall of the water tank 200, and the bottom of the air guide ribs abuts against the heating bottom wall 111, thereby dividing the heating chamber 110 into multiple areas for heating. One end of the air guide ribs is set at the air outlet of the heating air duct 133 to divide the heating chamber 110 into multiple heat-conducting air ducts. The multiple heat-conducting air ducts can guide the hot air output from the heating air duct 133 to perform zoned drying of the heating chamber 110, thereby achieving uniform drying of the bottom wall of the water tank 200 and improving drying efficiency.

[0061] Preferably, the other end of the air guide rib extends to the air inlet of the fan 131, and the outlet of each heat conduction air duct is connected to the air inlet of the fan 131. The heating device 13 and the heat conduction air duct form a circulating air duct. The air entering from the air inlet of the fan 131 is heated by the heating component 132 and can flow back to the air inlet of the fan 131 through multiple heat conduction air ducts to achieve circulating heating of the heating chamber 110.

[0062] like Figure 5 and Figure 6 As shown, the air guide rib includes a first air guide rib 1341, which protrudes from the heating bottom wall 111 of the heating housing 11. One end of the first air guide rib 1341 is located at the air outlet of the heating air duct 133, and the other end extends away from the air outlet of the heating air duct 133 and bends toward the air inlet of the fan 131.

[0063] Optionally, the air guide rib also includes a second air guide rib 1342. The second air guide rib 1342 protrudes from the heating bottom wall 111 of the heating housing 11. The second air guide rib 1342 is located on the side of the first air guide rib 1341 near the air outlet of the fan 131. One end of the second air guide rib 1342 is set near the air outlet of the heating air duct 133, and the other end of the second air guide rib 1342 extends away from the air outlet of the heating air duct 133 and bends toward the air inlet of the fan 131.

[0064] Optionally, the air guide rib also includes a third air guide rib 1343, which protrudes from the heating bottom wall 111 of the heating housing 11. The third air guide rib 1343 is located on the side of the second air guide rib 1342 away from the first air guide rib 1341. One end of the third air guide rib 1343 is located at the air outlet of the heating air duct 133, and the other end extends toward the air outlet away from the heating air duct 133 and bends toward the air inlet of the fan 131.

[0065] See also Figure 5 and Figure 6 A first heat-conducting air duct 1351 is formed between the side of the first air guide rib 1341 away from the second air guide rib 1342 and the heating side wall 112 of the heating shell 11. A second heat-conducting air duct 1352 is formed between the first air guide rib 1341 and the second air guide rib 1342. A third heat-conducting air duct 1353 is formed between the second air guide rib 1342 and the third air guide rib 1343. A fourth heat-conducting air duct 1354 is formed on the side of the third air guide rib 1343 away from the second air guide rib 1342. The air blown out from the air outlet of the heating air duct 133 is output through the first heat-conducting air duct 1351, the second heat-conducting air duct 1352, the third heat-conducting air duct 1353 and the fourth heat-conducting air duct 1354, and flows back to the air inlet of the fan 131.

[0066] In other embodiments, two, four or more guide ribs may be provided to divide the heating chamber 110 into different areas for heating, thereby achieving uniform heating of the water tank 200.

[0067] Optionally, the air guide ribs also include baffle ribs, which protrude from the heating bottom wall 111 of the heating housing 11. The baffle ribs include a first baffle rib 1361, which is disposed between the second air guide rib 1342 and the third air guide rib 1343, i.e., within the third heat conduction duct 1353. The two ends of the first baffle rib 1361 are correspondingly located at the bending positions of the second air guide rib 1342 and the third air guide rib 1343. The two ends of the first baffle rib 1361 are connected to the bending positions of the second air guide rib 1342 and the third air guide rib 1343. There are gaps between the air guide ribs 1343. The first baffle rib 1361 divides the third heat conduction air duct 1353 into two sections. The first section is the section near the air outlet of the heating air duct 133, and the second section is the section near the air inlet of the fan 131. By setting the first baffle rib 1361, the first section of the third heat conduction air duct 1353 can accumulate enough airflow before entering the second section, thereby fully and evenly heating the bottom wall of the water tank 200 corresponding to the entire third heat conduction air duct 1353.

[0068] Optionally, the baffle rib further includes a second baffle rib 1362. The second baffle rib 1362 is disposed on the side of the third air guide rib 1343 away from the second air guide rib 1342, that is, located within the fourth heat conduction air duct 1354. The second baffle rib 1362 is located between the third air guide rib 1343 and the heating device 13. One end of the second baffle rib 1362 is disposed corresponding to the air outlet of the heating air duct 133, and the other end extends away from the air outlet of the heating air duct 133 and extends toward the bend of the third air guide rib 1343. The arrangement of the second baffle rib 1362 can... It can prevent the wind from blowing towards the heating device 13, and the end of the second baffle 1362 near the bend of the third air guide 1343 can divide the fourth heat conduction air duct 1354 into two sections. The first section is the air outlet near the heating air duct 133, and the second section is the air inlet near the fan 131. The setting of the second baffle 1362 can make the first section in the fourth heat conduction air duct 1354 accumulate enough airflow before entering the second section, thereby heating the bottom wall of the water tank 200 corresponding to the entire fourth heat conduction air duct 1354.

[0069] In other embodiments, the baffles are not limited to the arrangement of the first baffle 1361 and the second baffle 1362. Baffles can also be arranged in other heat conduction ducts, and no specific limitation is made here.

[0070] Optionally, such as Figure 4As shown, a heat insulation plate 14 is provided in the heating chamber 110 at the air outlet of the heating air duct 133. The heat insulation plate 14 is located between the bottom wall of the water tank 200 and the guide rib, and can exchange heat with the high temperature hot air at the air outlet of the heating air duct 133, so as to avoid the high temperature hot air directly contacting the bottom wall of the water tank 200, which would cause the bottom wall of the water tank 200 to be too hot and cause a safety accident.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A channel floor air duct, characterized by, The bottom air duct (100) is configured to be installed at the bottom of the water tank (200), and the bottom air duct (100) includes: Heating shell (11) and heat preservation shell (12), wherein the heating shell (11) is disposed at the bottom of the water tank (200) and forms a heating cavity (110) between the water tank (200); The heat-insulating shell (12) is covered by the bottom of the heating shell (11). A heat-insulating cavity (1201) is formed between the bottom wall of the heat-insulating shell (12) and the bottom wall of the heating shell (11). An air outlet gap (1202) is formed between the circumferential side wall of the heat-insulating shell (12) and the heating shell (11) to communicate with the heat-insulating cavity (1201).

2. The underfloor air duct of claim 1, wherein, The thermal insulation shell (12) includes: The heat-insulating bottom wall (121) is located below the bottom wall of the heating shell (11) and is spaced apart from the bottom wall of the heating shell (11); An insulating sidewall (122) is disposed circumferentially on the insulating bottom wall (121), and there is a gap between the insulating sidewall (122) and the circumferential sidewall of the heating shell (11) to form the air outlet gap (1202).

3. The underfloor air duct of claim 2, wherein, The end of the heat-insulating sidewall (122) that is not connected to the heat-insulating bottom wall (121) slopes upward toward the interior of the heat-insulating cavity (1201).

4. The underfloor air duct of claim 2, wherein, The top surface of the insulated sidewall (122) is higher than the bottom wall of the water tank (200).

5. The underfloor air duct of claim 1, wherein, The heat-insulating shell (12) is provided with an air inlet that communicates with the heat-insulating cavity (1201).

6. The underfloor air duct of any of claims 1-5, wherein, A heating device (13) is provided inside the heating chamber (110). The heating device (13) includes a fan (131), a heating component (132), and a heating air duct (133). The air inlet of the fan (131) is connected to the air inlet channel of the drying water tank, and the air outlet of the fan (131) is connected to the heating air duct (133). The heating component (132) is located inside the heating air duct (133) and at the air outlet of the fan (131). The heating component (132) is used to heat the air blown out by the fan (131).

7. The underfloor air duct of claim 6, wherein, The heating chamber (110) is provided with air guide ribs, one end of which is provided corresponding to the air outlet of the heating air duct (133) to divide the heating chamber (110) into multiple heat-conducting air ducts.

8. The underfloor air duct of claim 7, wherein, The other end of the air guide rib extends to the air inlet of the fan (131), and the outlet of each heat-conducting air duct is connected to the air inlet of the fan (131). The heating device (13) and the heat-conducting air duct form a circulating air duct.

9. The trough bottom air duct according to claim 7, characterized in that, A heat insulation plate (14) is provided inside the heating chamber (110) at the air outlet of the heating air duct (133). The heat insulation plate (14) is located between the bottom wall of the water tank (200) and the air guide rib.

10. A drying water tank, characterized in that, It includes a water tank (200) and a bottom air duct (100) as described in any one of claims 1-9, wherein the bottom air duct (100) is disposed at the bottom of the water tank (200).

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