CN218900254U

CN218900254U - Milk warming sterilizer

Info

Publication number: CN218900254U
Application number: CN202222838974.XU
Authority: CN
Inventors: 张泽民; 钟继鑫; 张朴
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-25
Anticipated expiration: 2032-10-26

Abstract

The utility model provides a milk warming sterilizer, wherein a hot air generating device is arranged in a containing cavity and comprises a second air inlet corresponding to a first air outlet and a second air outlet corresponding to the first air inlet, and the hot air generating device is used for generating hot air and driving the hot air to flow between the second air inlet and the second air outlet. The hot air can sequentially pass through the second air outlet, the first air inlet, the first air outlet and the second air inlet, so that the reciprocating circulation of the hot air in the disinfection cavity and the hot air generating device is realized. In this application, through adopting the internal circulation of wind between sterilizer and hot-blast generating device, can avoid effectively when realizing the disinfection introducing the suction operation of bacterium and dust that the new trend led to from the outside, stopped secondary pollution completely to realize aseptic stoving.

Description

Milk warming sterilizer

Technical Field

The utility model relates to the technical field of milk warming equipment, in particular to a milk warming sterilizer.

Background

The milk mixing sterilizer or the milk bottle sterilizer is widely applied to the field of sterilization of infant milk bottles, in order to realize sterilization operation in the prior art, steam is generally adopted for sterilization, liquid water is put into equipment, then the liquid water is heated to form high-temperature steam, and the sterilization operation on milk bottles and the like is realized through the high-temperature steam.

In the prior art, after the steam sterilization is completed, it is generally necessary to dry the feeding bottle and the sterilizer using high temperature wind. In order to realize the operation, an air inlet is usually formed in the bottom of the sterilizer, in the air introduction process, the fan sucks external air into the air channel through the air inlet, after being heated by the heating element, the air is blown into the sterilizer, and is discharged through the air outlet, so that internal water vapor is taken away, and drying is realized.

However, the above drying method introduces external dust and bacteria into the sterilizer through the air inlet while completing the introduction and heating of the hot air, and acts on the feeding bottle during the drying process, and these dust and bacteria and the like cause secondary pollution to the feeding bottle. In order to solve the above problems, a layer of filter screen is usually added at the air inlet in the prior art, and dust and the like are blocked by the filter screen. However, the filter screen itself has limited interception efficiency and needs to be replaced or cleaned after a period of time, and the operation is relatively inconvenient. More importantly, wind resistance can be formed by adopting a filter screen to realize purification, so that the drying efficiency is reduced.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects that external dust and the like are prevented from entering the milk warmer through the filter screen, wind resistance is easy to form and drying efficiency is influenced in the prior art.

To this end, the present utility model provides a milk warming sterilizer comprising: the first shell comprises a first upper shell and a first lower shell which are oppositely arranged, a containing cavity is formed in the shell, and a first air inlet and a first air outlet are respectively formed in the first upper shell; the water containing disc is concavely arranged on the first upper shell and is used for realizing water containing operation; the heating disc is acted on the water containing disc and is used for realizing the heating operation of water in the water containing area; the sterilizer is arranged at the upper part of the first upper shell, a sterilizing cavity is arranged in the sterilizer, and the first air inlet and the first air outlet are respectively communicated with the sterilizing cavity; the hot air generating device is arranged in the accommodating cavity and comprises a second air inlet corresponding to the first air outlet and a second air outlet corresponding to the first air inlet, and the hot air generating device is used for generating hot air and driving the hot air to flow between the second air inlet and the second air outlet.

The utility model provides a milk warming sterilizer, wherein the hot air generating device comprises: the second shell is provided with the second air inlet and the second air outlet, and a heating cavity is formed in the second shell; the heating body is arranged in the heating cavity; the impeller is arranged in the heating cavity and is suitable for driving wind in the heating cavity to sequentially pass through the second air inlet and the second air outlet; and the power equipment is used for acting on the impeller and driving the impeller to rotate.

According to the milk warming sterilizer provided by the utility model, the impeller and the second air inlet are arranged opposite to each other.

The second shell comprises a second upper shell and a second lower shell, and an annular sealing ring is clamped between the second upper shell and the second lower shell.

According to the milk warming sterilizer provided by the utility model, the power equipment is the motor, the second lower shell is provided with the through hole, the output shaft of the motor is connected with the impeller through the through hole, and the motor sealing structure is arranged between the through hole and the output shaft.

According to the milk warming sterilizer provided by the utility model, the heating body is arranged at the downstream of the impeller along the flowing direction of hot air, and the height of the part of the heating cavity corresponding to the heating body is lower than that of the part corresponding to the impeller.

The milk warming sterilizer provided by the utility model is characterized in that the second lower shell is provided with a heating element connecting hole, and a heating element sealing structure is arranged between the heating element connecting hole and the heating element.

The sealing rings are respectively arranged at the positions of the second air inlet and the second air outlet corresponding to the first upper shell.

The utility model provides a milk warming sterilizer, wherein a heating area is arranged on one side of a first upper shell, which is positioned on the sterilizer, and is used for placing a water boiling kettle.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a milk warming sterilizer, comprising: the sterilizer is arranged at the upper part of the first upper shell, a sterilizing cavity is arranged in the sterilizer, and the first air inlet and the first air outlet are respectively communicated with the sterilizing cavity; the hot air generating device is arranged in the accommodating cavity and comprises a second air inlet corresponding to the first air outlet and a second air outlet corresponding to the first air inlet, and the hot air generating device is used for generating hot air and driving the hot air to flow between the second air inlet and the second air outlet.

Through foretell mode of setting, after hot-blast generating device starts, produce hot-blast in hot-blast generating device is inside earlier, simultaneously, hot-blast can pass through second air outlet, first air intake, first air outlet and second air intake in proper order, realizes the inside reciprocal circulation of hot-blast at disinfection chamber and hot-blast generating device. In the prior art, it is necessary to perform the heating and sterilizing operations by introducing external wind into the sterilizer. In the application, through adopting the internal circulation of wind between the sterilizer and the hot air generating device, the suction operation of bacteria and dust caused by introducing fresh air from the outside can be effectively avoided while the sterilization is realized, and the secondary pollution is completely eradicated, thereby realizing aseptic drying.

2. The utility model provides a milk warming sterilizer, which further comprises: the water containing disc is concavely arranged on the first upper shell and is used for realizing water containing operation; and the heating disc is acted on the water containing disc and is used for realizing the heating operation of water in the water containing area.

Through the arrangement mode, firstly, the water in the water containing disc can be heated through the heating disc to form water vapor, so that the disinfection operation of the water vapor on the feeding bottle in the sterilizer is realized. Meanwhile, the formed vapor can enter the hot air generating device under the driving of wind, and is subjected to secondary heating under the action of the hot air generating device, and the steam can be subjected to secondary heating at the moment, so that superheated steam is formed, and the disinfection operation is effectively ensured.

Meanwhile, after the heating plate and the hot air generating device are started at the same time, the heating plate and the hot air generating device are combined to realize temperature rise, and the required steam quantity is reduced at the moment, so that the generation of condensed water is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a structure of a milk warming sterilizer provided by the present utility model;

FIG. 2 is an exploded view of the milk warming sterilizer provided by the present utility model;

FIG. 3 is a cross-sectional view of the milk warming sterilizer provided by the present utility model;

FIG. 4 is a schematic view of a hot air generator according to the present utility model;

FIG. 5 is a top view of the hot air generating device provided by the utility model;

FIG. 6 isbase:Sub>A cross-sectional view taken along the direction A-A in FIG. 5;

FIG. 7 is a schematic view illustrating assembly of an annular seal ring according to the present utility model;

FIG. 8 is an assembled schematic view of the motor seal structure provided by the present utility model;

FIG. 9 is an assembly schematic diagram of a heat-generating body sealing structure provided by the present utility model;

fig. 10 is a flowchart of an operation of the milk warming sterilizer provided by the present utility model.

Description of the reference numerals in the examples:

1. a first housing; 101. a first upper case; 102. a first lower housing; 103. a first air inlet; 104. a first air outlet; 2. a sterilizer; 3. a hot air generating device; 301. a second air inlet, 302, a second air outlet; 303. a second upper case; 304. a second lower case; 305. a heating element; 306. an impeller; 307. a power plant; 308. an annular seal ring; 309. a motor sealing structure; 310. a heat-generating body sealing structure; 4. a water tray; 6. a seal ring; 7. a water kettle.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Examples

The embodiment provides a milk warming sterilizer which is used for realizing the sterilization operation of common tableware, toys and the like for infants such as milk bottles, nipples, spoons, water bottles, supplementary food bowls and the like. Specifically, as shown in fig. 1 to 10, it includes:

the first shell 1, as shown in fig. 2, comprises a first upper shell 101 and a first lower shell 102 which are oppositely arranged, wherein a containing cavity is formed in the shell, and a first air inlet 103 and a first air outlet 104 are respectively formed in the first upper shell 101;

a sterilizer 2 disposed at the upper part of the first upper housing 101, wherein a sterilization cavity is disposed in the sterilizer 2, and the first air inlet 103 and the first air outlet 104 are respectively communicated with the sterilization cavity;

specifically, a housing chamber is formed in the first housing 1 to realize a housing operation of a part of the structure. A first air inlet 103 and a first air outlet 104 are formed on the first upper case 101, thereby realizing a circulation operation of hot air between the sterilizer 2 and the first case 1. Meanwhile, a temperature sensing bulb is arranged in the sterilizer 2, and the temperature in the sterilizer 2 can be detected in real time through the temperature sensing bulb.

Further, the sterilizer 2 itself includes a cylinder and a cover disposed on the cylinder, and the cover can seal the top of the cylinder. At the same time, the cover body is provided with an exhaust port through which substances such as hot air and steam flowing inside the sterilizer 2 flow out of the sterilizer 2. In addition, a gravity seat can be arranged at the position of the exhaust port, and can be flushed when the pressure in the sterilizer 2 is increased, so that the exhaust function is realized; when the pressure in the sterilizer 2 is smaller, the gravity seat seals the exhaust port by means of gravity, so that substances such as external dust cannot flow out through the exhaust port, and normal sterilization action in the sterilizer 2 can be ensured.

In this embodiment, the hot air exchange manner between the first air inlet 103 and the first air outlet 104 and the sterilizer 2 is not limited, and as an embodiment, the lower part of the sterilizer 2 may be limited to be in an open state, and at this time, the air of the first air inlet 103 and the first air outlet 104 directly enters the sterilizer 2, and correspondingly, the positions of the first air inlet 103 and the first air outlet 104 are right below the sterilizer 2; as a variant, air ducts may also be provided between the first air inlet 103 and the first air outlet 104 and the sterilizer 2, in which case the bottom of the sterilizer 2 may not be open and the circulation of the air may be achieved.

As shown in fig. 2, the water tray 4 is concavely disposed on the first upper housing 101, so as to implement water-holding operation; the heating disc acts on the position of the water containing disc 4 and is used for realizing the heating operation of water in the water containing area;

specifically, pure water can be placed by arranging the water containing disc 4 so as to prepare for later formation of high-temperature steam, and meanwhile, in order to realize heating operation of the water containing disc 4, a heating disc is arranged on the outer side of the water containing disc 4, and the heating disc is made of resistance wires, so that after the resistance wires are electrified, water in the water containing disc 4 can be heated and steam is formed. Specifically, the water tray 4 may be made of metal, such as stainless steel, copper, etc., and a wire is connected to the heating tray to introduce external commercial power.

The hot air generating device 3 is arranged in the accommodating cavity, the hot air generating device 3 comprises a second air inlet 301 corresponding to the first air outlet 104 and a second air outlet 302 corresponding to the first air inlet 103, and the hot air generating device 3 is used for generating hot air and driving the hot air to flow between the second air inlet 301 and the second air outlet 302. As indicated by arrow a in fig. 3, a schematic diagram of the flow of hot air between the sterilizer 2 and the hot air generating device 3 is given.

Specifically, the hot air generating device 3 can heat the wind and drive the wind. The cool wind enters the inside of the hot wind generating device 3 through the second air inlet 301 and is heated, and then is discharged from the second air outlet 302.

In this embodiment, through the combination of the heating plate, the hot air generating device and the water containing plate, the above features are taken as a whole, so that the water vapor formed after heating in the water containing plate can be led into the hot air generating device and further heated by the hot air generating device, thereby forming superheated steam, the temperature of the superheated steam is higher, and the disinfection action can be effectively ensured.

Further, the specific structure of the hot air generating apparatus 3 is not limited, and in this embodiment, as shown in fig. 4, the hot air generating apparatus 3 includes:

the second housing is provided with the second air inlet 301 and the second air outlet 302, and a heating cavity is formed in the second housing; the heating body 305 is arranged in the heating cavity, the heating body 305 is made of a resistance wire and is connected with an external power supply, and the heating action of the heating body 305 can be realized after the power is on; the impeller 306 is arranged in the heating cavity and is suitable for driving the wind in the heating cavity to sequentially pass through the second air inlet 301 and the second air outlet 302, the impeller 306 is provided with a plurality of blades, after the impeller 306 is started, the blades can drive the wind in the heating cavity to flow, and after the wind passes through the heating body 305, the heating body 305 can heat the wind, so that the preparation and the extraction actions of hot wind are realized;

the power device 307 acts on the impeller 306 to drive the impeller 306 to rotate. In this embodiment, the power device 307 may be a motor structure, and an output end of the motor is connected to the impeller 306, so as to implement rotation of the impeller 306. The power device 307 may also use external power, such as wind force, water conservancy, etc., and at this time, wind wheels, water wheels, etc. that interact with wind, water, etc. are disposed on the power device 307, so that kinetic energy of these flows is effectively utilized.

Further, the position of the impeller 306 in the heating chamber is not limited, and as an embodiment, as shown in fig. 5, the impeller 306 is disposed opposite to the second air inlet 301. Alternatively, the impeller 306 itself may be offset with respect to the second intake 301.

In this embodiment, after the impeller 306 and the heating element 305 are started, hot air is generated inside the hot air generating device, and meanwhile, the hot air sequentially passes through the second air outlet, the first air inlet, the first air outlet and the second air inlet, so as to realize the reciprocating circulation of the hot air inside the disinfection cavity and the hot air generating device. Compared with the common disinfection mode in the prior art, the internal circulation of the air between the sterilizer and the hot air generating device is adopted, so that the sterilization is realized, the suction operation of bacteria and dust caused by introducing fresh air from the outside can be effectively avoided, the secondary pollution is completely eradicated, and the aseptic drying is realized.

In this embodiment, in order to effectively avoid steam entering into the second housing from being lost, and to influence the disinfection operation to the feeding bottle etc., a plurality of disinfection structures are additionally provided in this embodiment:

first, as shown in fig. 4, 5, 6 and 7, the second housing includes a second upper housing 303 and a second lower housing 304, and an annular seal ring 308 is interposed between the second upper housing 303 and the second lower housing 304. By providing the annular seal 308, high temperature steam in the second housing is prevented from escaping through the sidewall.

As shown in fig. 5, the second lower casing 304 is configured in a spiral casing structure, and the wind generated by the impeller 306 can be transferred to the heating element 305 by the above-described configuration.

Further, as shown in fig. 8, the second lower housing 304 is provided with a through hole, an output shaft of the motor is connected with the impeller 306 through the through hole, and a motor sealing structure 309 is disposed between the through hole and the output shaft. Through the above arrangement, the high-temperature steam in the second housing can be prevented from flowing out to the outside through the via hole of the second lower housing 304.

In order to ensure compactness of the second housing, the motor, and the like, as shown in fig. 5, the heating element 305 is disposed downstream of the impeller 306 in the flow direction of the hot air, that is, in the direction from right to left in the drawing, and the height of the portion of the heating chamber corresponding to the heating element 305 is lower than the height of the portion corresponding to the impeller 306. By the above-described structural arrangement, a space for accommodating the motor can be formed below the impeller 306, so that the motor itself is not excessively protruded to be disposed at the outer side portion of the second lower case 304 after the assembly of the motor is completed.

Further, as shown in fig. 9, a heating element 305 connection hole is provided in the second lower case 304, and a heating element sealing structure 310 is provided between the heating element 305 connection hole and the heating element 305. Specifically, since the heating element 305 itself needs to be provided with a wire to complete the current conducting operation, it is necessary to provide a heating element 305 connecting hole in the second lower case 304, the wire itself protruding to the outside of the heating element 305 connecting hole. Because a certain gap is formed between the connection hole of the heating element 305 and the heating element 305, in order to avoid high-temperature steam flowing out through the gap, the heating element sealing structure 301 needs to be arranged at the moment, and the middle part of the heating element sealing structure 301 is hollowed-out, so that a wire can normally pass through the heating element sealing structure. An annular groove is formed in the outer wall of the heating element sealing structure 301, so that the heating element sealing structure is stably embedded into the inner wall of the heating element 305 connecting hole, and shaking is avoided.

Further, in order to ensure that the hot air flowing out from the hot air generating device 3 is dissipated from the first upper casing 101, as shown in fig. 2, sealing rings 6 are respectively disposed between the second air inlet 301 and the first air outlet 104, and between the second air outlet 302 and the first air inlet 103, and the sealing rings 6 are disposed in an annular shape, so that the hot air is effectively gathered between the first upper casing 101 and the second upper casing 303.

In the milk heating sterilizer provided in this embodiment, besides sterilization and drying operations through the sterilizer 2, water heating and water heat preservation operations can be realized, as shown in fig. 1-3, a heating area is provided on one side of the first upper housing 101, which is located on the sterilizer 2, and the heating area is used for placing a water boiling kettle 7. The heating area position is provided with the heating plate, realizes the heating operation to kettle 7 after the heating plate starts, is provided with the controller simultaneously on warm milk sterilizer, and the controller self has temperature regulating, intensifies and accuse temperature function, can realize rising the temperature to 100 ℃, perhaps with the temperature steady at 45 ℃, 50 ℃ etc. can be directly used for dashing the temperature of milk.

The working process of the milk warming sterilizer provided in this embodiment is as follows, as shown in fig. 10:

firstly, a certain amount of clean water is required to be put into the water containing disc 4, the control equipment is started, the hot air generating device 3 is started, at the moment, the heating body 305 and the impeller 306 in the hot air generating device 3 are started, at the moment, air in the hot air generating device 3 is heated, and cold air is sucked from the second air inlet 301, flows out from the second air outlet 302 and flows into the sterilizer 2 further.

Sterilization procedure:

when the temperature sensing bag detects that the temperature in the sterilizer rises to 40 ℃, the heating plate is controlled to start, and the heating plate heats water in the water containing plate 4 to form water vapor, so that the temperature in the sterilizer rises rapidly. Meanwhile, the hot air generating device 3 continuously introduces the water vapor into the interior of the sterilizer for heating, so that the water vapor is secondarily heated to form superheated vapor (the temperature is more than 100 ℃), the whole temperature of the sterilizer is higher than 100 ℃ for 15 minutes, and the one-star standard of the sterilizer is achieved.

After the heating plate is started, water is heated from normal temperature to boiling to generate steam for about a period of time, so that the water cannot be directly converted into steam, and auxiliary heating can be performed through the hot air generating device 3 during the period of time, and the temperature inside the sterilizer is raised to about 55 ℃. After a period of time, the water boils and the steam heats the sterilizer 2, which then enters a rapid warming phase. The steam is heated again by the hot air generating device 3 to form superheated steam, and the temperature exceeds 100 ℃. After heating for about 5 minutes, the sterilizer temperature exceeded 100 ℃ for 15 minutes, which could be up to one star standard for a sterilizer, for a total of about 23 minutes. Compared with the prior art, the temperature can not reach 100 ℃ and the disinfection time is less than 15 minutes by using the heating plate alone to generate steam, and the effect of the disinfection program provided by the embodiment is more obvious.

Sterilization procedure:

after the disinfection is finished, the heating plate stops working, the hot air generating device 3 is continuously started, condensed water in the sterilizer can naturally evaporate at the high temperature, the temperature in the sterilizer is slowly reduced along with the time, and finally the temperature is stabilized at about 70 ℃. Because the sterilizer 2 in the sterilizer and condensed water in the feeding bottle are naturally evaporated in a high-temperature environment, the whole sterilizing cavity is in a positive pressure state, and the steam outlet is directly communicated with the outside and overflows from the steam outlet of the upper cover of the sterilizer, so that no external air enters to cause pollution. After a period of time, the sterilizer is completely dried.

After a period of time, the sterilizer 2 and the milk bottle are thoroughly dried, and the drying procedure is completed. Then, the process proceeds to a save process: the hot air generating device 3 works for 1 minute every 5 minutes, so that the interior of the sterilizer 2 and the milk bottle are kept dry, and bacteria are prevented from breeding.

It should be noted that the time and temperature involved in the above working process can be adjusted according to different working conditions, and are not explicitly listed here.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A milk warming sterilizer, comprising:

the first shell comprises a first upper shell and a first lower shell which are oppositely arranged, a containing cavity is formed in the shell, and a first air inlet and a first air outlet are respectively formed in the first upper shell;

the sterilizer is arranged at the upper part of the first upper shell, a sterilizing cavity is arranged in the sterilizer, and the first air inlet and the first air outlet are respectively communicated with the sterilizing cavity;

the hot air generating device is arranged in the accommodating cavity and comprises a second air inlet corresponding to the first air outlet and a second air outlet corresponding to the first air inlet, and the hot air generating device is used for generating hot air and driving the hot air to flow between the second air inlet and the second air outlet.

2. The milk warming sterilizer of claim 1, further comprising:

the water containing disc is concavely arranged on the first upper shell and is used for realizing water containing operation;

and the heating disc is acted on the water containing disc and is used for realizing the heating operation of water in the water containing area.

3. The milk warming sterilizer of claim 2, wherein the hot air generating device includes:

the second shell is provided with the second air inlet and the second air outlet, and a heating cavity is formed in the second shell;

the heating body is arranged in the heating cavity;

the impeller is arranged in the heating cavity and is suitable for driving wind in the heating cavity to sequentially pass through the second air inlet and the second air outlet;

and the power equipment is used for acting on the impeller and driving the impeller to rotate.

4. A milk warming sterilizer according to claim 3, wherein the impeller is disposed opposite the second air inlet.

5. A milk warming sterilizer according to claim 3, wherein the second housing comprises a second upper housing and a second lower housing, and an annular sealing ring is interposed between the second upper housing and the second lower housing.

6. The milk warming sterilizer according to claim 5, wherein the power device is a motor, a through hole is provided in the second lower housing, an output shaft of the motor is connected with the impeller through the through hole, and a motor sealing structure is provided between the through hole and the output shaft.

7. The milk warming sterilizer according to claim 6, wherein the heating body is disposed downstream of the impeller in a flow direction of hot air, and a height of a portion of the heating chamber corresponding to the heating body is lower than a height of a portion corresponding to the impeller.

8. The milk warming sterilizer according to any one of claims 5 to 7, wherein a heating element connection hole is provided on the second lower case, and a heating element sealing structure is provided between the heating element connection hole and the heating element.

9. A milk warming sterilizer according to claim 3, wherein sealing rings are respectively arranged at positions of the second air inlet and the second air outlet corresponding to the first upper casing.

10. A milk warming sterilizer according to any one of claims 3 to 6, wherein the first upper housing is provided with a heating zone on one side of the sterilizer, the heating zone being for the placement of a water kettle.