CN219208194U - Steam sterilizer - Google Patents

Abstract

The utility model discloses a steam sterilizer, which comprises a sterilizing barrel, a steam generating assembly and a hot air drying assembly, wherein the sterilizing barrel is provided with a steam inlet; the steam generating assembly comprises a base embedded at the bottom of the disinfection barrel and a heating body arranged in the base, wherein the base is provided with a containing cavity for containing water, and the heating body can heat the water in the containing cavity and form steam to be conveyed into the disinfection barrel; the hot air drying assembly comprises a fan arranged in a base, a plurality of first air inlet holes formed in the base and an air duct pipe which is respectively communicated with an air outlet of the fan and the accommodating cavity; under the action of the fan, external air can be sucked and blown to the accommodating cavity through the air duct pipe; the heating body can heat the air in the accommodating cavity and form hot air to be conveyed into the sterilizing barrel. Therefore, the steam generating assembly and the hot air drying assembly are both provided with the same heating body, so that the number of parts inside a product is reduced, the cost is reduced, and meanwhile, only one heating body is required to be controlled, and the steam generating assembly is simpler.

Description

Steam sterilizer

Technical Field

The utility model relates to the field of infant care product sterilization, in particular to a steam sterilizer.

Background

This section provides only background information related to the present application so as to enable those skilled in the art to more thoroughly and accurately understand the present application, and is not necessarily prior art.

Most of the existing infant care products are sterilized and dried by a steam sterilizer. Currently, most steam disinfectors in the market are provided with two heating elements, one heating element (such as a heating wire) is used for heating water and forming steam for disinfection, and the other heating element (such as a PTC heating plate) is used for heating air and forming hot air for drying. So set up, not only increased the quantity of the inside spare part of product, improved the cost, and need separately control two heat-generating bodies, it is comparatively troublesome.

Therefore, how to provide a steam sterilizer with simple structure and convenient control operation is a technical problem to be solved by the person skilled in the art.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the steam sterilizer, wherein the steam generating component and the hot air drying component share the same heating body, so that the number of parts in a product is reduced, the structure of the product is simplified, the cost is reduced, and meanwhile, only one heating body is required to be controlled, so that the steam sterilizer is simpler.

The utility model adopts the technical proposal for solving the problems that:

a steam sterilizer, comprising:

the sterilizing barrel is used for placing articles to be sterilized, and a plurality of first through holes are formed in the bottom of the sterilizing barrel;

the steam generation assembly comprises a base embedded at the bottom of the disinfection barrel and a heating body arranged in the base, a containing cavity for containing water is formed in the base, the heating body can heat the water in the containing cavity and form steam, and the steam is conveyed into the disinfection barrel through a plurality of first through holes;

the hot air drying assembly comprises a fan arranged in the base, a plurality of first air inlet holes which are formed in the base and are communicated with an air inlet of the fan, and an air duct pipe, one end of which is communicated with an air outlet of the fan, and the other end of which is communicated with the accommodating cavity; under the action of the fan, external air can be sucked and blown into the accommodating cavity through the air duct pipe; the heating body can heat the air in the accommodating cavity and form hot air, and the hot air is conveyed into the disinfection barrel through the plurality of first through holes.

Further, the base comprises a shell and a bottom cover arranged at the bottom of the shell, the upper surface of the shell is concaved downwards to form a groove, and the bottom of the groove is provided with an opening; the heating body is arranged at the opening and seals the opening to form the accommodating cavity.

Further, the heating body is a microcrystalline plate, and a nano heating film is arranged at the bottom of the microcrystalline plate.

Further, the disinfection barrel comprises a first bracket which is arranged at the bottom of the disinfection barrel and is used for covering the top of the groove, a first annular air inlet cavity is formed by surrounding the first bracket and the bottom of the disinfection barrel, and an air outlet of the air duct pipe is communicated with the first air inlet cavity; the side wall of the first bracket is provided with a plurality of second air inlet holes which are respectively communicated with the first air inlet cavity and the accommodating cavity in a surrounding mode, and the top wall of the first bracket is provided with a plurality of second through holes corresponding to the first through holes.

Further, the side walls of the grooves are inclined, and air entering through the second air inlet holes can flow to the heating body under the guidance of the side walls of the grooves.

Further, the shell is connected with the bottom cover, a mounting cavity is defined between the shell and the bottom cover, the fan is arranged in the mounting cavity, and a plurality of first air inlets Kong Kaishe are formed in the bottom cover and are communicated with the mounting cavity.

Further, the heating element comprises a second bracket which is arranged in the mounting cavity and is positioned at the bottom of the heating element, a second air inlet cavity is formed by surrounding the second bracket and the bottom of the heating element, and a plurality of third air inlet holes which are respectively communicated with the second air inlet cavity and the mounting cavity are formed in the side wall of the second bracket in a ring manner; the fan is fixed at the bottom of the second support, and an air inlet of the fan is communicated with the second air inlet cavity.

Further, the temperature probe is arranged on the second bracket and electrically connected with the circuit board, and the temperature probe is in contact with the bottom of the heating body to detect the temperature of the heating body.

Further, the groove is further provided with an installation groove in a ring mode at the opening, an adhesive piece is arranged in the installation groove, and the heating body is adhered to the opening through the adhesive piece.

Further, the first through holes comprise a plurality of big holes and small holes, and the positions of the big holes and the small holes are designed according to the required positions of inverted placing of the feeding bottle.

Further, the hole edge ring of the large hole is provided with an upper flange.

Further, still include the top cap subassembly, the top cap subassembly is in including setting up disinfection bucket top and be used for placing the layer frame and the lid of waiting to disinfect article are in the top cap on the layer frame, set up a plurality of third through-holes that can supply steam and hot-blast to pass through on the layer frame, set up the venthole that can supply steam exhaust on the top cap.

In summary, the steam sterilizer provided by the utility model has the following beneficial effects:

(1) According to the steam sterilizer, under the action of the microcrystalline plate, water in the accommodating cavity can be heated to form steam, and products in the sterilizing barrel and the shelves are fumigated by the steam to achieve the aim of sterilization; when the upper surface of the microcrystal plate is free of water, the microcrystal plate generates heat through low-power dry combustion so as to heat air in the accommodating cavity, and hot air generated in the accommodating cavity is blown into the sterilizing barrel and the layer rack under the action of the fan so as to dry and dry the product. Therefore, the steam generating component and the hot air drying component in the steam sterilizer share the same heating element, so that the number of parts in the product is reduced, the structure of the product is simpler, and the cost is reduced; meanwhile, the product can realize two functions of disinfection and drying only by controlling the microcrystalline plate, and is simple and convenient. In addition, the heating element made of the microcrystal plate has the advantages of low cost, long service life, high heat efficiency, uniform heating and the like.

(2) According to the steam sterilizer, the first bracket is arranged at the bottom of the sterilizing barrel, and the first bracket and the bottom of the sterilizing barrel are enclosed to form the annular first air inlet cavity, so that air from the air duct pipe can enter the first air inlet cavity and circularly flow, and then enters the accommodating cavity through the plurality of second air inlet holes on the first bracket; through designing the lateral wall of recess into the slope form for the air that gets into through a plurality of second fresh air inlets can flow to the heat-generating body under the guide of recess lateral wall, makes it can be fully heated by the heat-generating body and form hot air, and then hot air flows upwards and enters into in the disinfection bucket. Therefore, the first air inlet cavity is designed, so that air from the air outlet of the air duct pipe can flow more smoothly, and the air quantity entering the accommodating cavity is increased; through designing the recess lateral wall into the slope form, can play the guide effect to the air and guide its flow direction heat-generating body for the air can be by abundant heating, and then has increaseed the production of hot-blast volume, improves drying efficiency.

(3) According to the steam sterilizer, the second bracket is arranged in the installation cavity, the second air inlet cavity is formed by surrounding the second bracket and the bottom of the heating body, and under the action of the fan, air in the installation cavity can enter the second air inlet cavity through the plurality of third air inlet holes and radiate the bottom of the microcrystal plate, so that the heating film is prevented from being burnt out due to overhigh temperature of the microcrystal plate. Therefore, through designing the second air inlet cavity, heat dissipation to the bottom of the micro-crystal plate can be achieved, and the service life of the micro-crystal plate is prolonged.

Drawings

FIG. 1 is a schematic view of a steam sterilizer according to the present utility model;

FIG. 2 is an exploded view of the steam sterilizer of the present utility model;

FIG. 3 is a schematic view of the structure of FIG. 2 from another perspective;

FIG. 4 is an exploded view of a sterilizing tub and a top cover assembly of the steam sterilizer of the present utility model;

FIG. 5 is an exploded view of a steam generating assembly and a hot air drying assembly of the steam sterilizer of the present utility model;

FIG. 6 is a schematic cross-sectional view of a steam sterilizer of the present utility model;

fig. 7 is an enlarged partial schematic view of the portion a in fig. 6.

Wherein the reference numerals have the following meanings:

1. a sterilizing tub; 101. a first through hole; 1011. a large hole; 10111. an upper flange; 1012. a small hole; 2. a base; 201. a housing; 2011. a first via; 2012. a groove; 20121. a mounting groove; 202. a bottom cover; 2021. a first air inlet; 3. a heating element; 4. a first bracket; 401. a second air inlet; 402. a second through hole; 403. a second via; 5. a blower; 6. an air duct pipe; 7. a second bracket; 701. a third air inlet; 702. a mounting hole; 703. a mounting column; 8. a circuit board; 9. a temperature probe; 10. a control panel; 11. a layer rack; 1101. a third through hole; 12. a top cover; 1201. and an air outlet hole.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the modules 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1-7, the utility model provides a steam sterilizer, which is mainly used for sterilizing and drying articles such as milk bottles, milk bottle accessories, infant tableware, water cups and the like, and comprises a top cover assembly, a sterilizing barrel 1, a steam generating assembly and a hot air drying assembly, wherein the top cover assembly comprises a layer frame 11 arranged at the top of the sterilizing barrel 1 and a top cover 12 covered on the layer frame 11, and the layer frame 11 and the sterilizing barrel 1 can be used for placing infant care articles to be sterilized. Specifically, the sterilizing bucket 1 is used for placing large-volume infant care products such as milk bottles, water cups and the like; the shelf 11 is used for placing infant care products with smaller volume, such as tableware, nipple and the like. The steam generating component is arranged at the bottom of the sterilizing bucket 1 and is used for generating steam to sterilize the sterilizing bucket 1 and the articles in the shelves 11; the hot air drying component is also arranged at the bottom of the sterilizing bucket 1 and is used for generating hot air to dry the sterilizing bucket 1 and the articles in the shelves 11. Further, the bottom of the sterilizing tub 1 is provided with a plurality of first through holes 101 through which steam and hot air can pass, the shelf 11 is provided with a plurality of third through holes 1101 through which steam and hot air can pass, and the top cover 12 is provided with air outlet holes 1201 through which steam can be discharged.

Referring to fig. 1 to 7, the steam generating assembly comprises a base 2 embedded at the bottom of the sterilizing tub 1 and a heating body 3 arranged in the base 2, wherein a containing cavity for containing water is formed in the base 2, and the heating body 3 can heat the water in the containing cavity and form steam. Specifically, the base 2 includes a housing 201 and a bottom cover 202 disposed at the bottom of the housing 201, wherein the housing 201 and the bottom cover 202 are connected to each other and define a mounting cavity therein; the upper surface of the case 201 is concave downward to form a recess 2012, an opening is provided at the bottom of the recess 2012, and the heating element 3 is disposed at the opening and seals the opening to form a receiving cavity. Preferably, the heating element 3 is a micro-crystal plate, and a nano heating film is printed on the bottom of the micro-crystal plate.

Further, a ring-shaped mounting groove 20121 is further formed at the bottom of the opening of the groove 2012, and an adhesive (not shown) is disposed in the mounting groove 20121, and the micro-board is adhered to the opening by the adhesive. Preferably, the mounting groove 20121 is a glue groove, the glue groove is internally provided with solid glue, and the microcrystalline board is glued at the opening through the solid glue.

Therefore, when steam sterilization is needed, the sterilizing bucket 1 and the top cover assembly are firstly taken down, purified water is added into the accommodating cavity, then the sterilizing bucket 1 is covered on the base 2 again, the top cover assembly is placed, then the micro-crystal plate is electrified, and the micro-crystal plate radiates infrared rays and generates heat to heat water in the accommodating cavity to form steam.

Referring to fig. 5-6, the hot air drying assembly includes a fan 5 disposed in the mounting cavity of the base 2, a plurality of first air inlets 2021 formed on the bottom cover 202 and communicated with the mounting cavity, and an air duct 6 with one end communicated with the air outlet of the fan 5 and the other end communicated with the accommodating cavity; the fans 5 and the air duct pipes 6 are arranged in two, and the two fans 5 and the two air duct pipes 6 are arranged at intervals along the left-right direction. Further, a second bracket 7 connected with the housing 201 and located at the bottom of the micro-crystal plate is further disposed in the mounting cavity, the second bracket 7 is in a rectangular groove structure, the micro-crystal plate is covered on the top of the second bracket 7 and encloses between the two to form a second air inlet cavity, and a plurality of third air inlet holes 701 respectively communicating the second air inlet cavity with the mounting cavity are formed in the front and rear side walls of the second bracket 7; two mounting holes 702 are formed in the bottom of the second bracket 7 at intervals along the left-right direction, two fans 5 are respectively fixed at the bottom of the second bracket 7 through the two mounting holes 702, and air inlets of the two fans 5 are communicated with the second air inlet cavity; two air duct pipes 6 are respectively arranged at the outer sides of the left and right side walls of the second bracket 7.

Therefore, after the blower 5 is started, the external air can enter the installation cavity through the first air inlet holes 2021, enter the second air inlet cavity through the third air inlet holes 701 on the second bracket 7, enter the air duct pipe 6 through the air inlet of the blower 5, and finally blow to the accommodating cavity through the air duct pipe 6. In addition, when air enters the second air inlet cavity through the third air inlet holes 701, the air can dissipate heat at the bottom of the micro-crystal plate, so that the heating film is prevented from being burnt out due to overhigh temperature of the micro-crystal plate, and the service life of the micro-crystal plate is prolonged.

Further, a circuit board 8 disposed in the mounting cavity and a temperature probe 9 electrically connected to the circuit board 8 are also included. Specifically, a mounting post 703 is further protruding from the middle of the second bracket 7, the temperature probe 9 is mounted in the mounting post 703, and the temperature probe 9 abuts against the bottom of the micro-board to detect the temperature of the micro-board. Preferably, the temperature probe 9 is an NTC temperature sensor probe.

Therefore, the temperature probe 9 is arranged to detect the temperature of the microcrystal plate, and whether the water is boiled dry or not is judged through temperature change, and meanwhile, dry burning protection is carried out. When the upper surface of the micro-crystal plate is free of water, the temperature of the micro-crystal plate gradually rises and is detected by the temperature probe 9, the temperature probe 9 sends a detected temperature signal to the circuit board 8, and then the circuit board 8 controls the micro-crystal plate to perform low-power dry combustion to generate heat, and air is blown into the accommodating cavity through the fan 5 to be heated.

Referring to fig. 3-4 and fig. 6-7, the steam sterilizer further comprises a first bracket 4 disposed at the bottom of the sterilizing tub 1 and used for covering the top of the groove 2012, a rectangular cavity is concavely disposed in the middle of the first bracket 4, the top of the cavity is attached to the bottom of the sterilizing tub 1, and a plurality of second through holes 402 corresponding to the plurality of first through holes 101 are formed on the top of the cavity, the outer edge of the first bracket 4 is abutted against the inner side wall of the bottom of the sterilizing tub 1, so that a first annular air inlet cavity is formed between the first bracket 4 and the bottom of the sterilizing tub 1, and the air outlet of the air duct tube 6 is communicated with the first air inlet cavity; the side wall of the cavity of the first bracket 4 is also provided with a plurality of second air inlet holes 401 which are respectively communicated with the first air inlet cavity and the accommodating cavity in a ring manner.

Thus, the air from the two air duct pipes 6 can enter the first air inlet cavity and circularly flow in the annular first air inlet cavity, and then enter the accommodating cavity through the second air inlet holes 401 on the first bracket 4 for heating.

In this embodiment, a first via 2011 communicating with the air outlet of the duct tube 6 is formed on the upper surface of the housing 201 of the base 2, and a second via 403 communicating with the first via 2011 is formed on the first bracket 4, so that the air outlet of the duct tube 6 is communicated with the first air inlet cavity.

Further, the side walls of the recess 2012 on the housing 201 are inclined to gradually decrease the opening of the recess 2012 from top to bottom along the height direction, and the air entering through the plurality of second air inlet holes 401 can flow to the top of the heating element 3 under the guidance of the side walls of the recess 2012.

Therefore, the side wall of the groove 2012 is designed to be inclined, so that the air can be guided to flow to the heating body 3, the air can be fully heated, the generation of hot air quantity is further increased, and the drying efficiency is improved.

In this embodiment, the cross section of the recess 2012 is inverted trapezoid.

In addition, the plurality of first through holes 101 arranged at the bottom of the sterilizing bucket 1 comprise a plurality of large holes 1011 and small holes 1012 with different sizes, and the positions of the large holes 1011 and the small holes 1012 are designed according to the required positions for placing the feeding bottles upside down, so that the raw material usage amount at the bottom of the sterilizing bucket 1 is reduced, and steam can smoothly enter the sterilizing bucket 1. In addition, the hole edge of the large hole 1011 is also provided with an upper flange 10111 in a ring, so that the milk bottle can be prevented from toppling down when standing upside down, and the milk bottle can be placed upside down conveniently.

In addition, the front end of the base 2 is also provided with a control panel 10 electrically connected with the circuit board 8, and the control panel 10 is provided with a switch button, a disinfection button, a drying button and an automatic operation button, thereby facilitating the selection operation of a user.

In summary, the steam sterilizer provided by the utility model has the following beneficial effects:

the steam sterilizer of the utility model can heat the water in the containing cavity to form steam under the action of the micro-crystal plate, and fumigate the products in the sterilizing barrel 1 and the layer rack 11 by utilizing the steam to achieve the aim of sterilization; when water does not exist on the upper surface of the microcrystal plate, the microcrystal plate generates heat through low-power dry combustion so as to heat air in the accommodating cavity, and hot air generated in the accommodating cavity is blown into the sterilizing bucket 1 and the layer rack 11 under the action of the fan 5 so as to dry and dry products. Therefore, the steam generating component and the hot air drying component in the steam sterilizer share the same heating body 3, so that the number of parts in the product is reduced, the structure of the product is simpler, and the cost is reduced; meanwhile, the product can realize the functions of disinfection and drying only by controlling the microcrystalline plate, and is simple and convenient. In addition, the heating element 3 made of the microcrystal plate has the advantages of low cost, long service life, high heat efficiency, uniform heating and the like.

The steam sterilizer of the utility model is characterized in that the first bracket 4 is arranged at the bottom of the sterilizing bucket 1, and a first annular air inlet cavity is formed by enclosing the first bracket 4 and the bottom of the sterilizing bucket 1, so that air from the air duct pipe 6 can enter the first air inlet cavity for circulating flow, and then enter the accommodating cavity through a plurality of second air inlet holes 401 on the first bracket 4; by designing the side walls of the recess 2012 to be inclined, the air entering through the plurality of second air inlet holes 401 can flow to the heat generating body 3 under the guide of the side walls of the recess 2012, so that it can be sufficiently heated by the heat generating body 3 and form hot air, which then flows upward and enters into the sterilizing tub 1. Therefore, by designing the first air inlet cavity, the air from the air outlet of the air duct pipe 6 can flow more smoothly, and the air quantity entering the accommodating cavity is increased; through designing recess 2012 lateral wall into the slope form, can play the guide effect to the air and guide its flow direction heat-generating body 3 for the air can be fully heated, and then has increaseed the production of hot-blast volume, has improved drying efficiency.

And thirdly, the steam sterilizer of the utility model is characterized in that the second bracket 7 is arranged in the installation cavity, a second air inlet cavity is formed by surrounding the second bracket 7 and the bottom of the heating body 3, and under the action of the fan 5, air in the installation cavity can enter the second air inlet cavity through a plurality of third air inlet holes 701 and radiate the bottom of the microcrystal plate, so that the heating film is prevented from burning out due to overhigh temperature of the microcrystal plate. Therefore, through designing the second air inlet cavity, heat dissipation to the bottom of the micro-crystal plate can be achieved, and the service life of the micro-crystal plate is prolonged.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that the terms "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the modules 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, in the description of the present utility model, the meaning of "a plurality", "a number" is two or more, unless explicitly defined otherwise.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (12)

1. A steam sterilizer, comprising:

the sterilizing barrel is used for placing articles to be sterilized, and a plurality of first through holes are formed in the bottom of the sterilizing barrel;

the steam generation assembly comprises a base embedded at the bottom of the disinfection barrel and a heating body arranged in the base, a containing cavity for containing water is formed in the base, the heating body can heat the water in the containing cavity and form steam, and the steam is conveyed into the disinfection barrel through a plurality of first through holes;

the hot air drying assembly comprises a fan arranged in the base, a plurality of first air inlet holes which are formed in the base and are communicated with an air inlet of the fan, and an air duct pipe, one end of which is communicated with an air outlet of the fan, and the other end of which is communicated with the accommodating cavity; under the action of the fan, external air can be sucked and blown into the accommodating cavity through the air duct pipe; the heating body can heat the air in the accommodating cavity and form hot air, and the hot air is conveyed into the disinfection barrel through the plurality of first through holes.

2. The steam sterilizer of claim 1, wherein the base includes a housing and a bottom cover disposed at the bottom of the housing, the upper surface of the housing is concave downward to form a groove, and the bottom of the groove is provided with an opening; the heating body is arranged at the opening and seals the opening to form the accommodating cavity.

3. The steam sterilizer of claim 2, wherein the heating element is a micro-crystal plate, and a nano heating film is arranged at the bottom of the micro-crystal plate.

4. A steam sterilizer as claimed in claim 2 or 3, further comprising a first bracket arranged at the bottom of the sterilizing barrel and used for covering the top of the groove, wherein a first annular air inlet cavity is formed by surrounding the first bracket and the bottom of the sterilizing barrel, and an air outlet of the air duct pipe is communicated with the first air inlet cavity; the side wall of the first bracket is provided with a plurality of second air inlet holes which are respectively communicated with the first air inlet cavity and the accommodating cavity in a surrounding mode, and the top wall of the first bracket is provided with a plurality of second through holes corresponding to the first through holes.

5. The steam sterilizer of claim 4, wherein the side walls of the grooves are inclined, and air entering through the plurality of second air inlet holes can flow to the heating body under the guidance of the side walls of the grooves.

6. A steam sterilizer as claimed in claim 2 or claim 3, wherein the housing is interconnected with the bottom cover and defines a mounting cavity therebetween, the blower being disposed within the mounting cavity, a plurality of the first inlet air Kong Kaishe being on the bottom cover and communicating with the mounting cavity.

7. The steam sterilizer of claim 6, further comprising a second bracket arranged in the installation cavity and positioned at the bottom of the heating body, wherein a second air inlet cavity is enclosed between the second bracket and the bottom of the heating body, and a plurality of third air inlet holes which are respectively communicated with the second air inlet cavity and the installation cavity are formed in a ring on the side wall of the second bracket; the fan is fixed at the bottom of the second support, and an air inlet of the fan is communicated with the second air inlet cavity.

8. The steam sterilizer of claim 7 further including a circuit board disposed within the mounting chamber and a temperature probe disposed on the second bracket and electrically connected to the circuit board, the temperature probe abutting the bottom of the heater to detect the temperature of the heater.

9. A steam sterilizer as claimed in claim 2 or claim 3, wherein the recess is further provided with a mounting groove around the aperture, an adhesive is provided in the mounting groove, and the heating element is adhered to the aperture by the adhesive.

10. The steam sterilizer of claim 1, wherein the plurality of first through holes include a plurality of large holes and small holes, and the positions of the large holes and the small holes are designed to be inverted with respect to the feeding bottle.

11. The steam sterilizer of claim 10, wherein the large bore hole is provided with an upper flange along the ring.

12. The steam sterilizer of claim 1, further comprising a top cover assembly, wherein the top cover assembly comprises a layer frame arranged at the top of the sterilizing barrel and used for placing articles to be sterilized and a top cover covered on the layer frame, a plurality of third through holes through which steam and hot air can pass are formed in the layer frame, and air outlets through which the steam can be discharged are formed in the top cover.

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