Feeding bottle sterilizing and drying machine

Abstract

The utility model relates to a feeding bottle disinfection dryer, including base, drying device, cover body and control device, said base and said cover body form the disinfection chamber, be equipped with the shelf in the disinfection chamber, be equipped with the heating tray below the shelf, the shelf is equipped with placing post and air guide hole, the placing post is equipped with the air outlet, and the air guide hole is equipped with the air guide hole. The drying device is provided with a fan, a heating element, a first air duct, a second air duct and a third air duct, the first air duct is provided with a first air inlet and a first air outlet, the fan is communicated with the first air inlet, the heating element is arranged between the first air inlet and the first air outlet, and one end of the second air duct is hermetically communicated with the first air outlet. One end of the third air duct is in sealed communication with the first air outlet, the other end of the third air duct extends to the heating disc and is communicated with the air guide hole, the third air duct is located above the heating disc, and the third air duct and the second air duct are arranged adjacently; the feeding bottle sterilizing and drying device simultaneously realizes the technical effects of sterilizing and drying the feeding bottle.

Description

Technical Field

[0001] The utility model relates to a sterilizing and drying machine, in particular to a sterilizing and drying machine for milk bottles. Background Art

[0002] The immune system of a newborn is incomplete and its ability to resist bacteria is poor, so it is easy to be infected. The feeding bottles often have milk residue in them. Milk is a very nutrient-rich substance that easily breeds bacteria, so it needs to be cleaned and disinfected promptly and thoroughly to prevent diseases from entering the body through the mouth.

[0003] After the baby bottles are sterilized by steam sterilization, a large number of water droplets will be attached to the bottle walls. The humid environment is prone to bacterial reproduction. In order to increase the cleaning time of the baby bottles, this type of product adds a drying function based on the ordinary steam bottle sterilizer, which is often called a bottle sterilizer with a drying function.

[0004] In the existing bottle sterilizing and drying machines, the airflow is heated by the fan and then transmitted over a certain distance before entering the sterilizing chamber. During this process, heat is lost to a certain extent, resulting in a relatively low temperature of the airflow after reaching the sterilizing chamber, and a poor drying effect. Utility Model Content

[0005] In order to solve the above-mentioned prior art problems, the utility model provides a bottle sterilizing and drying machine, which includes a base, a drying device, a cover body and a control device, the drying device is electrically connected to the control device, the base and the cover body form a sterilizing chamber, a shelf is provided in the sterilizing chamber, a heating plate for high-temperature sterilization is provided below the shelf, the shelf is provided with one or more placement columns and one or more air guide holes, the placement column is provided with an air outlet, the drying device is provided with a fan, a heating element, a first air duct, a second air duct and a third air duct, the first air duct has a first air inlet and a first air outlet, the fan is connected to the first air inlet, the heating element is arranged between the first air inlet and the first air outlet, one end of the second air duct is sealed and connected to the first air outlet, the other end of the second air duct is sealed and connected to the air outlet of the placement column, one end of the third air duct is sealed and connected to the first air outlet, the other end of the third air duct extends to the heating plate and is connected to the air guide hole, the third air duct is located above the heating plate, and the third air duct is arranged adjacent to the second air duct.

[0006] As an improvement of the practical bottle sterilizing and drying machine, the bottle sterilizing and drying machine also includes a guide member, the third air duct is formed between the storage rack and the bottom wall of the sterilization chamber, the heating plate is circular, and two guide members are provided, which are arranged side by side in the third air duct and symmetrically arranged along the axis passing through the center of the heating plate.

[0007] As an improvement of the practical bottle sterilizing and drying machine, the bottle sterilizing and drying machine also includes a guide member, the third air duct is formed between the storage rack and the bottom wall of the disinfection chamber, the guide member is provided with a flat plate portion, the flat plate portion abuts against the bottom wall of the disinfection chamber, two surrounding walls protruding upward from the flat plate portion abut upward against the storage rack, the two surrounding walls extend along the flat plate portion from the first air outlet to the heating disk, the two surrounding walls, the flat plate portion and the storage rack constitute a guide channel, and the guide channel guides the air flow toward the heating disk.

[0008] As an improvement of the practical bottle sterilizing and drying machine, the heating element of the bottle sterilizing and drying machine is provided with a central axis A, three or more spacers and three or more side panels, the three or more side panels are arranged outside the central axis A, one end of each spacer is connected to the central axis A, and the other end of each spacer abuts against the side panel, three or more spacers are arranged in a circular array around the central axis A, and the heating element is arranged in the first air duct along the axial direction of the central axis A.

[0009] As an improvement of the practical bottle sterilizing and drying machine, the second air duct of the bottle sterilizing and drying machine is provided with three or more first air guide channels and three or more second air guide channels, the storage rack is provided with a tray upper cover and a tray lower cover, the placement column is arranged on the tray upper cover, three or more first air guide channels are respectively formed in the three or more placement columns, three or more second air guide channels respectively correspond to the three or more first air guide channels, each second air guide channel includes two first side walls formed by protruding downward from the tray upper cover and two second side walls formed by protruding upward from the tray lower cover, the two second side walls are inserted between the two first side walls, and the two first side walls and the two second side walls both extend from the air outlet to the corresponding first air guide channel.

[0010] As an improvement of the practical bottle sterilizing and drying machine, the first air duct of the bottle sterilizing and drying machine includes a holding section for holding the heating element, the cross-section of the holding section gradually decreases from one end close to the first air inlet to the other end close to the first air outlet, the heating element is arranged in the holding section, and the cross-section of the end of the heating element close to the first air outlet is larger than the cross-section of the end of the holding section close to the first air outlet.

[0011] As an improvement of the practical bottle sterilizing and drying machine, the first air duct includes a holding section for holding the heating element, the cross-section of the holding section gradually decreases from an end close to the first air inlet to an end close to the first air outlet, the heating element is arranged in the holding section, and the cross-section of the end of the heating element close to the first air outlet is larger than the cross-section of the end of the holding section close to the first air outlet.

[0012] As an improvement of the practical bottle sterilizing and drying machine, the first air duct of the bottle sterilizing and drying machine includes a vertically arranged holding section and a transition section, the holding section is used to hold the heating element, the first air inlet is arranged at the upper end of the holding section, and the lower end of the holding section is provided with a second air outlet, the fan is arranged above the first air inlet and parallel to the direction of the first air inlet; the first air outlet is arranged in the transition section, and the transition section extends from the second air outlet to the first air outlet.

[0013] As an improvement of the practical bottle sterilizing and drying machine, the first air duct of the bottle sterilizing and drying machine includes a vertically arranged holding section, a first transition section and a second transition section, the holding section is used to hold the heating element, the upper end of the holding section is provided with a second air inlet, and the lower end of the holding section is provided with a second air outlet, the fan is arranged above the second air inlet and perpendicular to the direction of the second air inlet, the first transition section and the fan are arranged side by side in the horizontal direction, the first air inlet is arranged in the first transition section, and the first transition section extends from the first air inlet to the second air inlet; the first air outlet is arranged in the second transition section, and the second transition section extends from the second air outlet to the first air outlet.

[0014] As an improvement of the practical bottle sterilizing and drying machine, the first air duct of the bottle sterilizing and drying machine includes a vertically arranged holding section, a first transition section and a second transition section, the holding section is used to hold the heating element, the upper end of the holding section is provided with a second air inlet, and the lower end of the holding section is provided with a second air outlet, the fan is arranged parallel to the direction of the second air inlet and arranged side by side with the holding section along the cross-sectional direction, the first air inlet is arranged in the first transition section, the first transition section extends from the first air inlet to the second air inlet, the first air outlet is arranged in the second transition section, and the second transition section extends from the second air outlet to the first air outlet.

[0015] As an improvement of the practical baby bottle sterilizing and drying machine, the fan and the first air outlet of the baby bottle sterilizing and drying machine are arranged in a horizontal direction, and the first air duct extends from the first air inlet to the first air outlet in a linear direction.

[0016] The utility model provides a milk bottle sterilizing and drying machine, which has the following beneficial effects: after the water in the heating plate used for high-temperature sterilization of milk bottles in the utility model is evaporated, the control device controls the heating plate to continue heating, the control device controls the drying device to work, the wind flow generated by the fan passes through the first air duct and is heated by the heating element, part of the wind flow enters the second air guide channel, and is then guided by the first air guide channel to enter the milk bottle from the air outlet to dry the milk bottle, the other part of the wind flow enters the third air duct, flows through the guide member, and the guide channel guides the wind flow to the heating plate for a second heating, and the milk bottle is dried for a second time, thereby ensuring the sterilization and drying effects of the milk bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0018] Figure 2 for Figure 1 Exploded view of.

[0019] Figure 3 This is a cross-sectional view of an open cover of a preferred embodiment of a milk bottle sterilizing and drying machine of the utility model.

[0020] Figure 4 It is a schematic diagram of the connection structure of the heating plate, drying device and storage rack of a preferred embodiment of a milk bottle sterilizing and drying machine of the utility model.

[0021] Figure 5 for Figure 4 sectional view of .

[0022] Figure 6 The utility model is a schematic diagram of the connection structure of the heating plate and the storage rack of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0023] Figure 7 The utility model is a schematic structural diagram of a storage rack of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0024] Figure 8 The utility model is a schematic diagram of the connection structure of the tray lower cover and the guide member of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0025] Fig. 9 The utility model is a schematic diagram of the lower cover structure of a tray of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0026] Fig.10 The utility model is a schematic diagram of the tray cover structure of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0027] Fig.11The utility model is a schematic diagram of the structure of a heating plate of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0028] Fig.12 The utility model is a schematic diagram of the structure of a heating element of a preferred embodiment of a milk bottle sterilizing and drying machine.

[0029] Fig.13 This is a structural schematic diagram of another embodiment 1 of the first air duct of a milk bottle sterilizing and drying machine of the utility model.

[0030] Fig.14 This is a structural schematic diagram of another second embodiment of the first air duct of a milk bottle sterilizing and drying machine of the utility model.

[0031] Fig.15 This is a structural schematic diagram of another third embodiment of the first air duct of a milk bottle sterilizing and drying machine according to the utility model. DETAILED DESCRIPTION

[0032] Below, combined with the attached Figure 1-15 , preferred embodiments and other embodiments are used to further describe the present invention. It should be noted that, under the premise of no conflict, the various technical features described below can be arbitrarily combined to form new embodiments.

[0033] like Figures 1 to 12The utility model is a preferred embodiment of a bottle sterilizing and drying machine, which includes a base 1, a drying device 4, a cover 5 and a control device, wherein the control device is arranged in the base 1, and the drying device 4 is electrically connected to the control device, the base 1 and the cover 5 form a sterilizing chamber 112, a storage rack 2 is arranged in the sterilizing chamber 112, a heating plate 3 for high-temperature sterilization is arranged below the storage rack 2, the storage rack 2 is provided with one or more placement columns 211 and one or more air guide holes 213, the placement columns 211 are provided with an air outlet 2111, the drying device 4 is provided with a fan 41, a heating element 42, a first air duct 43, a second air duct 44 and a third air duct 46, the first air duct 43 has a first air inlet 431 and a first air outlet 432, the fan 41 is connected to the first air inlet 431, the heating element 42 is arranged between the first air inlet 431 and the first air outlet 432, one end of the second air duct 44 is connected to the first air outlet The third air duct 46 is sealed and connected with the first air outlet 432, the other end of the second air duct 44 is sealed and connected with the air outlet 2111 of the placement column 211, one end of the third air duct 46 is sealed and connected with the first air outlet 432, the other end of the third air duct 46 extends to the heating plate 3 and is connected with the air guide hole 213, the third air duct 46 is located above the heating plate 3, and the third air duct 46 is adjacent to the second air duct 44. In this embodiment, the third air duct 46 and the second air duct 44 are adjacent to each other in upper and lower directions, and the first air outlet 432 is located above the heating plate 3 to prevent water in the heating plate 3 from flowing into the third air duct 46. The airflow in the third air duct 46 is heated again by the heating plate 3, and the temperature of the third air duct 46 is higher than that of the second air duct 44. The third air duct 46 is located above the heating plate 3, and the third air duct 46 is adjacent to the second air duct 44 to slow down the heat loss of the airflow in the second air duct 44.

[0034] Further, if Figure 3 , Figure 5 and Figure 6As shown, the utility model further includes a guide member 45, wherein the third air duct is formed between the storage rack 2 and the bottom wall of the disinfection chamber, the heating plate 3 is circular, and two guide members 45 are provided, both of which extend from the first air outlet 432 to the heating plate 3, and the two guide members 45 are arranged side by side in the third air duct 46 and are symmetrically arranged along an axis passing through the center of the heating plate 3. By arranging the guide member 45, the wind can flow to the heating plate 3 according to a predetermined path, ensuring that the wind can be heated in the third air duct 46, and by arranging the two guide members 45, the two guide members 45 are symmetrically arranged along the axis passing through the center of the heating plate 3, that is, the guide member 45 extends from the part close to the center of the heating plate 3 to the part away from the center of the circle, thereby increasing the area of ​​the wind passing through the heating plate 3 and heating more fully.

[0035] Furthermore, the bottle sterilizing and drying machine of the utility model further includes a guide member 45, the third air duct 46 is formed between the rack 2 and the bottom wall of the sterilizing chamber 112, the guide member 45 is provided with a flat plate portion 451, the flat plate portion 451 abuts against the bottom wall of the sterilizing chamber 112, two surrounding walls 452 formed by protruding upward from the flat plate portion 451 abut upward against the rack 2, the two surrounding walls 452 extend from the first air outlet 432 to the heating plate 3 along the flat plate portion 451, the two surrounding walls 452, the flat plate portion 451 and the rack form a guide channel 453, and the guide channel 453 guides the wind to the heating plate 3. By providing the guide member 45, the wind flow of the third air duct 46 can flow to the heating plate 3 according to a predetermined path, thereby reducing the loss of wind flow.

[0036] like Figure 5 , Fig.11 As shown, the heating element 42 of a milk bottle sterilizing and drying machine of the utility model is provided with a central axis A, three or more spacers 421 and three or more side panels 422, the three or more side panels 422 are arranged around the central axis A, one end of each spacer 421 is connected to the central axis A, and the other end of each spacer 421 is abutted against the side panel 422, and three or more spacers 421 are arranged in a circular array around the central axis A, and the heating element 42 is arranged in the first air duct 43 along the axial direction of the central axis A, so that the wind flow can pass through the channel formed between the side panel 422 and the spacer 421, the contact area with the heating element 42 is large, and the wind flow is heated more fully.

[0037] Further, such as Figure 5 , Figure 8 , Fig. 9 and Fig.10As shown, the second air duct 44 of the bottle sterilizing and drying machine of the utility model is provided with three or more first air guide channels 441 and three or more second air guide channels 442, the storage rack 2 is provided with a tray upper cover 21 and a tray lower cover 22, the placement column 211 is arranged on the tray upper cover 21, the three or more first air guide channels 441 are respectively formed in the three or more placement columns 211, the three or more second air guide channels 442 are respectively corresponding to the three or more first air guide channels, each of the second air guide channels 442 includes the tray upper cover 21 protruding downward The two first side walls 212 formed and the tray lower cover 22 protrude upward to form two second side walls 221, and the two second side walls are inserted between the two first side walls. The two first side walls 212 and the two second side walls 221 extend from the air outlet to the corresponding first air guide channel 441. The air guide holes 213 are arranged around the placement column 211, so that the wind flow that has been heated for the second time can be guided to the vicinity of the milk bottle to slow down the loss of temperature around the milk bottle. The second air guide channel 442 is arranged so that the wind flow can flow to the first air guide channel 441 along a predetermined path, thereby reducing the loss of wind flow.

[0038] Further, such as Figure 5 As shown, the first air duct of a bottle sterilizing and drying machine of the utility model includes a holding section 436 for holding the heating element 42, and the cross-section of the holding section 436 gradually decreases from one end close to the first air inlet 431 to one end close to the first air outlet 431, and the heating element 42 is arranged in the holding section 436, and the cross-section of one end of the heating element 42 close to the first air outlet 431 is larger than the cross-section of one end of the holding section 436 close to the first air outlet 431, so that the heating element 42 can be clamped in the holding section 436, and the assembly is convenient.

[0039] Further, such as Figure 5 As shown, the first air duct 43 of a bottle sterilizing and drying machine of the utility model includes a vertically arranged holding section 433 and a transition section 436, the holding section 433 is used to hold the heating element 42, the first air inlet 431 is arranged at the upper end of the holding section 433, and the lower end of the holding section 433 is provided with a second air outlet 4332, the fan 41 is arranged above the first air inlet 431 and arranged in parallel with the direction of the first air inlet 431, the first air outlet 432 is arranged in the transition section 436, and the transition section 436 extends from the second air outlet 4332 to the first air outlet 432, and by arranging the fan 41 above the transition section and the vertically arranged holding section 433, the design space of the bottle sterilizing and drying machine along the lateral direction can be reduced.

[0040] like Figure 3 As shown, in a preferred embodiment, the base 1 of a bottle sterilizing and drying machine of the utility model comprises an upper seat body 11 and a lower seat body 12, the upper seat body 11 is sleeved on the lower seat body 12, the sterilizing chamber 112 is formed between the upper seat body 11 and the cover body 5, the lower seat body 12 is recessed downward to form a receiving groove 121, the upper seat body 11 is arranged in the receiving groove 121, the upper seat body 11 is downwardly penetrated by a mounting hole 122 connected to the receiving groove 121, the heating plate 3 is inlaid in the mounting hole 122 and accommodated in the receiving groove 121, and a switch 14 is provided on the outer side of the lower seat body 2, and the switch 14 is electrically connected to the controller.

[0041] Fig.13 This is another embodiment of the first air duct 43 of a bottle sterilizing and drying machine of the utility model. The first air duct 43 includes a vertically arranged holding section 433, a first transition section 434 and a second transition section 435. The holding section 433 is used to hold the heating element 42. The upper end of the holding section 433 is provided with a second air inlet 4331, and the lower end of the holding section 433 is provided with a second air outlet 4332. The fan 41 is arranged above the second air inlet 4331 and is arranged perpendicular to the direction of the second air inlet 4331. The first transition section 434 and the fan 41 are arranged side by side in the horizontal direction. The first air inlet 431 is arranged at the first transition section 434, the first transition section 434 extends from the first air inlet 431 to the second air inlet 4331, the first air outlet 432 is arranged at the second transition section 435, and the second transition section 435 extends from the second air outlet 4332 to the first air outlet 432. The fan 41 and the holding section 433 are arranged side by side in the transverse direction to reduce the design space of the bottle sterilizer and dryer in the vertical direction. The transition section 435 is arranged vertically to further reduce the design space of the bottle sterilizer and dryer in the transverse direction.

[0042] Fig.14This is another embodiment of the first air duct 43 of the bottle sterilizing and drying machine of the utility model. The first air duct 43 includes a vertically arranged holding section 433, a first transition section 434 and a second transition section 435. The holding section 433 is used to hold the heating element. The upper end of the holding section 433 is provided with a second air inlet 4331, and the lower end of the holding section 433 is provided with a second air outlet 4332. The fan 41 is arranged in parallel with the direction of the second air inlet 4331 and is arranged side by side with the holding section 433 along the cross-sectional direction; the first air inlet 431 It is arranged in the first transition section 434, and the first transition section 434 extends from the first air inlet 431 to the second air inlet 4331; the first air outlet 432 is arranged in the second transition section 435, and the second transition section 435 extends from the second air outlet 4332 to the first air outlet 432. The holding section 435 is arranged vertically to reduce the design space of the bottle sterilizing and drying machine in the horizontal direction. The fan 41 and the holding section 435 are arranged side by side in the horizontal direction to further reduce the design space of the bottle sterilizing and drying machine in the vertical direction.

[0043] Fig.15 This is another third embodiment of the first air duct 43 of a bottle sterilizing and drying machine of the utility model, wherein the fan 41 and the first air outlet 432 are arranged in a horizontal direction, and the first air duct 43 extends from the first air inlet to the first air outlet 432 in a linear direction, and the fan 41 and the first air outlet 432 are arranged horizontally in a direction so that the first air duct 43 extends from the first air inlet 431 to the first air outlet 432 in a linear direction, so as to simplify the structure of the first air duct 43, simplify the production process, simplify the production cost, and reduce the path of the first air duct 43, so that the path of the air duct transmitted in the first air duct 43 is shorter, the heat loss is reduced, and the space in which the bottle sterilizing and drying machine is set in the vertical direction can be reduced.

[0044] The working process of the bottle sterilizing and drying machine of the utility model is as follows: the user adds water to the heating plate 3, puts the bottle to be sterilized and dried upside down on the placing column 211, starts the switch 14, and the control device arranged in the base 1 controls the heating plate 3 to heat, the water in the heating plate 3 is heated to form steam, and enters the sterilizing chamber 112 from the air guide hole 213 to sterilize the bottle at high temperature, and when the water in the heating plate 3 is completely evaporated, the control device controls the heating plate 3 to continue heating, and the control device controls the drying device 4 to work, that is, the control device 4 controls the fan 41 to work, and the heating element 42 is heated, the wind flow generated by the fan 41 passes through the first air duct 43 and is heated by the heating element 42, and part of the wind flow enters the second air guide channel 442 through the first air outlet 432, and is then guided by the first air guide channel 441 to enter the milk bottle from the air outlet 2111 to dry the milk bottle, and another part of the wind flow enters the third air duct 46 through the first air outlet 432, flows through the guide member 45, and the guide channel 453 guides the wind flow to the heating plate 3 for the second heating, and finally enters the disinfection chamber 112 from the air guide hole 213 to dry the milk bottle for the second time.

[0045] The beneficial effects of a baby bottle sterilizing and drying machine according to the utility model are as follows: after the water used for high-temperature sterilization of baby bottles in the heating plate of the baby bottle sterilizing and drying machine according to the utility model evaporates, the control device controls the heating plate to continue heating, and the control device controls the drying device to work. After the wind flow generated by the fan passes through the first air duct and is heated by the heating element, part of the wind flow enters the second air guide channel, and is then guided by the first air guide channel to enter the baby bottles from the air outlet to dry the baby bottles, and the other part of the wind flow enters the third air duct and flows through the guide member. The guide channel guides the wind flow to the heating plate for a second heating, and the baby bottles are dried for a second time, thereby ensuring the effect of sterilizing and drying the baby bottles.

[0046] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A bottle sterilizing and drying machine, characterized in that: The invention relates to a novel air-conditioning device, wherein the air-conditioning device comprises a base, a drying device, a cover body and a control device, wherein the drying device is electrically connected to the control device, the base and the cover body form a disinfection chamber, a storage rack is arranged in the disinfection chamber, a heating plate for high-temperature disinfection is arranged below the storage rack, the storage rack is provided with one or more placement columns and one or more air guide holes, the placement columns are provided with an air outlet, the drying device is provided with a fan, a heating element, a first air duct, a second air duct and a third air duct, the first air duct has a first air inlet and a first air outlet, the fan is connected to the first air inlet, the heating element is arranged between the first air inlet and the first air outlet, one end of the second air duct is sealed and connected to the first air outlet, the other end of the second air duct is sealed and connected to the air outlet of the placement column, one end of the third air duct is sealed and connected to the first air outlet, the other end of the third air duct extends to the heating plate and is connected to the air guide hole, the third air duct is located above the heating plate, and the third air duct is arranged adjacent to the second air duct.

2. The bottle sterilizing and drying machine according to claim 1, characterized in that: It also includes a guide member, the third air duct is formed between the shelf and the bottom wall of the disinfection chamber, the heating plate is circular, two guide members are provided, arranged side by side in the third air duct and symmetrically arranged along the axis passing through the center of the heating plate.

3. The bottle sterilizing and drying machine according to claim 1, characterized in that: The invention also includes a guide member, wherein the third air duct is formed between the storage rack and the bottom wall of the disinfection chamber, and the guide member is provided with a flat plate portion, wherein the flat plate portion abuts against the bottom wall of the disinfection chamber, and two surrounding walls protruding upward from the flat plate portion abut against the storage rack upward, and the two surrounding walls extend from the first air outlet to the heating plate along the flat plate portion, and the two surrounding walls, the flat plate portion and the storage rack constitute a guide channel, and the guide channel guides the air flow toward the heating plate.

4. The bottle sterilizing and drying machine according to claim 1, characterized in that: The heating element is provided with a central axis A, three or more spacers and three or more side plates, the three or more side plates are arranged around the central axis A, one end of each spacer is connected to the central axis A, and the other end of each spacer is abutted against the side plate, and the three or more spacers are arranged in a circular array around the central axis A, and the heating element is arranged in the first air duct along the axial direction of the central axis A.

5. The milk bottle sterilizing and drying machine according to claim 1, characterized in that: The second air duct is provided with three or more first air guiding channels and three or more second air guiding channels, the storage rack is provided with a tray upper cover and a tray lower cover, the placement column is arranged on the tray upper cover, three or more first air guiding channels are respectively formed in the three or more placement columns, and three or more second air guiding channels respectively correspond to the three or more first air guiding channels, each of the second air guiding channels includes two first side walls formed by protruding downward from the tray upper cover and two second side walls formed by protruding upward from the tray lower cover, the two second side walls are inserted between the two first side walls, and the two first side walls and the two second side walls both extend from the first air outlet to the corresponding first air guiding channel.

6. The bottle sterilizing and drying machine according to claim 1, characterized in that: The first air duct includes a holding section for holding the heating element, the holding section has a cross-section that gradually decreases from an end close to the first air inlet to an end close to the first air outlet, the heating element is arranged in the holding section, and the cross-section of the end of the heating element close to the first air outlet is larger than the cross-section of the end of the holding section close to the first air outlet.

7. The milk bottle sterilizing and drying machine according to claim 1, characterized in that: The first air duct includes a vertically arranged holding section and a transition section, the holding section is used to hold the heating element, the first air inlet is arranged at the upper end of the holding section, and the lower end of the holding section is provided with a second air outlet, the fan is arranged above the first air inlet and parallel to the direction of the first air inlet; the first air outlet is arranged in the transition section, and the transition section extends from the second air outlet to the first air outlet.

8. The bottle sterilizing and drying machine according to claim 1, characterized in that: The first air duct includes a vertically arranged holding section, a first transition section and a second transition section, the holding section is used to hold the heating element, the upper end of the holding section is provided with a second air inlet, and the lower end of the holding section is provided with a second air outlet, the fan is arranged above the second air inlet and perpendicular to the direction of the second air inlet, the first transition section and the fan are arranged side by side in the horizontal direction, the first air inlet is arranged in the first transition section, and the first transition section extends from the first air inlet to the second air inlet; the first air outlet is arranged in the second transition section, and the second transition section extends from the second air outlet to the first air outlet.

9. The bottle sterilizing and drying machine according to claim 1, characterized in that: The first air duct includes a vertically arranged holding section, a first transition section and a second transition section, the holding section is used to hold the heating element, a second air inlet is provided at the upper end of the holding section, and a second air outlet is provided at the lower end of the holding section, the fan is arranged in parallel with the direction of the second air inlet and arranged side by side with the holding section along the cross-sectional direction, the first air inlet is arranged in the first transition section, the first transition section extends from the first air inlet to the second air inlet, the first air outlet is arranged in the second transition section, and the second transition section extends from the second air outlet to the first air outlet.

10. The milk bottle sterilizing and drying machine according to claim 1, characterized in that: The fan and the first air outlet are arranged in a horizontal direction, and the first air duct extends from the first air inlet to the first air outlet in a linear direction.

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