CN217504087U - Modularized breast milk refrigerator - Google Patents

Abstract

The utility model discloses a modularization breast milk refrigerator, include: the refrigerator comprises a refrigerator body and a refrigerator cover, wherein the refrigerator body comprises a refrigerating sheet, a cold guide module, a conversion air valve and a placing cavity, and the cold guide module guides cold air produced by the refrigerating sheet to the placing cavity through the conversion air valve; the placing cavity comprises an inner cavity, a plurality of air duct holes and a freezing pipe are distributed on the surface of the inner cavity, and freezing liquid stored in the freezing pipe is frozen under the action of cold air; the box cover comprises a main control module and a key module, wherein the main control module is used for detecting the condition that the key module is pressed down and outputting a first control signal and a second control signal to the switching air valve so as to achieve the effect of refrigerating the cavity. The temperature of the placing cavity is kept constant at the storage temperature of the breast milk bag by controlling the rotary air exchange valve, and the air circulation in the placing cavity is realized by arranging the cold guide fins; and, the inner chamber surface is provided with a plurality of wind channel holes to ensure that the breast milk bag is evenly refrigerated, greatly reduced the possibility that the breast milk that does not receive the freeze is rotten.

Description

Modularized breast milk refrigerator

Technical Field

The utility model relates to a maternal and infant articles for use technical field, in particular to modularization breast milk refrigerator.

Background

Because the mother in the workplace can not feed the baby with breast milk in time at work, the mother needs to suck the breast milk in advance and store the breast milk in the milk storage bag so as to bring the baby home to feed the baby conveniently. In order to ensure the quality of the breast milk, the extruded breast milk needs to be stored in a special breast milk bag for fresh keeping, and the breast milk bag is sealed and refrigerated for storage. The british breast milk council has taught that once expressed, breast milk should not be stored at four degrees celsius for more than twenty-four hours.

For the employees, how to freeze and preserve the breast milk bags is a big problem. When the workplace of a mother of a workplace is not provided with a refrigerator, the mother of the workplace generally uses an ice bag to preserve heat of the breast milk bag or uses a vehicle-mounted refrigerator to store the breast milk bag, and the ice bag is used for preserving heat, so that the heat preservation temperature of the breast milk bag is uneven, and the deterioration of unfrozen breast milk is difficult to avoid; the mode of using the vehicle-mounted refrigerator for heat preservation is high in cost, single in use scene and incapable of meeting public transport travel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modularization breast milk refrigerator to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The purpose of the utility model is realized by adopting the following technical scheme: a modular breastmilk refrigerator comprising: the refrigerator comprises a box body, wherein a refrigerating piece, a cold guide module and a placing cavity are arranged in the box body, the placing cavity is positioned above the cold guide module, the refrigerating piece is positioned below the cold guide module and used for producing cold air, the refrigerating piece comprises a refrigerating surface, the refrigerating surface is in contact with the cold guide module, a conversion air valve is arranged between the cold guide module and the placing cavity, and the cold guide module is used for guiding the cold air upwards out to the placing cavity through the conversion air valve; the placing cavity comprises an inner cavity, a plurality of air duct holes and a plurality of freezing pipes are distributed on the surface of the inner cavity, the inner cavity is used for placing breast milk bags, and freezing liquid is stored in the freezing pipes;

further comprising: the refrigerator comprises a refrigerator cover, a main control module, a cold guide module, a switching air valve and a refrigerating piece, wherein the main control module is installed in the refrigerator cover, a key module is arranged on the surface of the refrigerator cover, the main control module is respectively connected with the key module, the cold guide module, the switching air valve and the refrigerating piece, the main control module is used for detecting the condition that the key module is pressed down and outputting a first control signal to the switching air valve according to the condition that the key module is pressed down, the switching air valve comprises a four-corner air valve and a central air valve, the first control signal is used for controlling the central air valve to be closed and the four-corner air valve to be opened, cold air enters an inner cavity through the four-corner air valve, and refrigerating fluid is frozen;

the main control module is further used for outputting a second control signal to the conversion air valve according to the condition that the key module is pressed, the second control signal is used for controlling the central air valve to be opened and the four-corner air valve to be closed, and the cold air enters the inner cavity through the air passage hole and flows back to the cold guide module from the central air valve.

As a further improvement of the technical scheme, one end of the inner cavity close to the conversion air valve is a lower cavity end, one end of the inner cavity far away from the conversion air valve is an upper cavity end, and the diameter of the hole of the air duct hole is sequentially increased from the lower cavity end to the upper cavity end.

As a further improvement of the above technical solution, the placing cavity further includes an outer layer, the outer layer wraps the inner cavity, the outer layer is divided into a vacuum outer layer, a vacuum inner layer and a quenching inner layer from outside to inside, the vacuum outer layer and the vacuum inner layer form a vacuum layer, the vacuum layer is used for keeping the temperature of the inner cavity at a constant temperature, and the freezing pipe is located between the quenching inner layer and the inner cavity.

As a further improvement of the above technical solution, a heat dissipation module is further arranged in the box body, and the heat dissipation module is located at the bottommost part of the box body and below the refrigeration sheet; the refrigerating sheet further comprises a heat dissipation surface, the heat dissipation module is in contact with the heat dissipation surface, and the heat dissipation module is connected with the main control module; the bottom of the shell of the box body is provided with heat dissipation holes, the heat dissipation holes are used for heat dissipation and ventilation of the heat dissipation module, and the heat dissipation module is used for guiding heat generated by the refrigeration piece downwards to the outside of the box body through the heat dissipation holes.

As a further improvement of the above technical solution, the heat dissipation module includes a heat dissipation fin and a heat dissipation fan, one end of the heat dissipation fin contacts with the refrigeration sheet, the other end of the heat dissipation fin is fixedly connected with the heat dissipation fan, the heat dissipation fin is used for transferring the heat of the heat dissipation surface downwards, and the heat dissipation fan is used for dissipating the heat of the heat dissipation surface out of the box body through the heat dissipation hole.

As a further improvement of the above technical solution, the heat dissipating fin has a radian, one end of the heat dissipating fin close to the heat dissipating surface is a first convex surface, the first convex surface contacts with the heat dissipating surface, one end of the heat dissipating fin far away from the heat dissipating surface is a first concave surface, the heat dissipating fan is located below the first concave surface, and the heat dissipating fan is connected with the main control module.

As a further improvement of the above technical solution, the cold guide module includes a cold guide fin and a cold guide fan, one end of the cold guide fin contacts with the refrigeration sheet, the other end of the cold guide fin is connected to the cold guide fan, the cold guide fin is used to transfer the cold air produced by the refrigeration surface upwards, and the cold guide fan is used to guide the cold air into the placing cavity.

As a further improvement of the above technical solution, the cold guide fin has a radian, one end of the cold guide fin close to the refrigerating surface is a second convex surface, the second convex surface contacts with the refrigerating surface, one end of the cold guide fin far away from the refrigerating surface is a second concave surface, the cold guide fan is located above the second concave surface, and the cold guide fan is connected with the main control module.

As a further improvement of the technical scheme, a plug is arranged on the side face of the box body and used for charging the modular breast milk refrigerator, and the main control module selects a power supply source of the modular breast milk refrigerator according to whether the plug is plugged; the case cover is internally provided with a temperature sensor, a power supply module and a battery, the main control module is respectively electrically connected with the battery, the power supply module and the temperature sensor, the power supply module is electrically connected with the battery, the battery is used for supplying power to the modular breast milk refrigerator when the modular breast milk refrigerator is not plugged, and the power supply module is used for supplying power to the modular breast milk refrigerator and charging the battery when the modular breast milk refrigerator is plugged;

the temperature sensor is electrically connected with the main control module, the temperature sensor is used for detecting the temperature parameter of the inner cavity and feeding the temperature parameter back to the main control module, and the main control module stores the temperature parameter of the inner cavity;

the box surface still is provided with the pilot lamp, the pilot lamp with master control module connects, the pilot lamp is used for instructing the running state of modularization breast milk refrigerator.

As a further improvement of the above technical solution, the key module includes a normal mode selection key, a refrigeration mode selection key and a power key, and the power key is used for turning on and off the modular breast milk refrigerator; the refrigeration mode selection is used for placing the modular breast milk refrigerator in a refrigeration mode, and when the main control module detects that the refrigeration mode selection key is pressed, a first control signal is output; the common mode selection key is used for placing the modular breast milk refrigerator in a common mode, and when the main control module detects that the common mode selection key is pressed, a second control signal is output.

The utility model has the advantages that: the application provides a modularization breast milk refrigerator includes: the refrigerator comprises a refrigerator body and a refrigerator cover, wherein the refrigerator body comprises a refrigeration piece, a cold guide module and a placing cavity, the refrigeration piece is positioned below the cold guide module, the placing cavity is positioned above the cold guide module, the refrigeration piece comprises a refrigeration surface, the refrigeration surface is in contact with the cold guide module, a conversion air valve is arranged between the cold guide module and the placing cavity, the refrigeration piece is used for producing cold air, and the cold guide module guides the cold air to the placing cavity through the conversion air valve; the placing cavity comprises an inner cavity, a plurality of air duct holes and a refrigerating pipe are distributed on the surface of the inner cavity, and refrigerating liquid stored in the refrigerating pipe is frozen under the action of cold air; the box cover comprises a main control module and a key module, the main control module is used for detecting the condition that the key module is pressed down and outputting a first control signal and a second control signal to the conversion air valve, the first control signal is used for controlling the four-corner air valve of the conversion air valve to be opened, and the second control signal is used for controlling the central air valve of the conversion air valve to be opened.

The utility model has two working modes of a refrigeration mode and a common mode, is convenient for a user to carry, can quickly enable the temperature of the inner cavity to reach the temperature stored in the breast milk bag in the refrigeration mode, and realizes air circulation through the cold guide fins in the common mode, so that the temperature of the cavity is kept constant under the storage temperature condition of the breast milk bag; and, the setting up of wind channel hole of this application can place everywhere of cavity under the common mode and receive cold evenly to guarantee that the breast milk bag evenly receives cold, greatly reduced the rotten possibility of breast milk that does not receive the freeze.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

FIG. 1 is an exploded view of a modular breastmilk refrigerator of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a down-conversion air valve of the modular breast milk refrigerator of an embodiment of the present application under control of a first control signal;

FIG. 3 is a schematic structural diagram of a down-conversion air valve of the modular breast milk refrigerator of an embodiment of the present application under control of a second control signal;

FIG. 4 is a schematic structural diagram of an inner cavity, a freezing pipe and a quenching inner layer of a modular breast milk refrigerator according to an embodiment of the present application;

FIG. 5 is an exploded view of the inner chamber, freezer pipe, quench inner, and switching gas valve of a modular breastmilk refrigerator of an embodiment of the present application;

fig. 6 is a schematic structural diagram of a heat dissipation fin of a modular breast milk refrigerator according to an embodiment of the present application;

fig. 7 is a sectional view of a modular breastmilk refrigerator of an embodiment of the present application operating in a normal mode;

fig. 8 is a sectional view of a modular breast-milk refrigerator of an embodiment of the present application operating in a cooling mode.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It should be noted that although functional block divisions are provided in the system drawings and logical orders are shown in the flowcharts, in some cases, the steps shown and described may be performed in different orders than the block divisions in the systems or in the flowcharts. The terms first, second and the like in the description and in the claims, and the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Please refer to fig. 1 to 8, which illustrate and describe a modular breast milk refrigerator according to an embodiment of the present application. A modular breastmilk refrigerator comprising: the heat dissipation module 100, the cold conduction module 200 and the placing cavity 300 are arranged in the box body, the heat dissipation module 100 is located at the bottommost part of the box body, the cold conduction module 200 is located above the heat dissipation module 100, and the placing cavity 300 is located above the cold conduction module 200. The refrigerating sheet 400 is arranged between the cold guide module 200 and the heat dissipation module 100, the refrigerating sheet 400 is used for producing cold air, the refrigerator comprises a refrigerating surface 410 and a heat dissipation surface 420, the refrigerating surface 410 is in contact with the cold guide module 200, and the heat dissipation surface 420 is in contact with the heat dissipation module 100. A conversion air valve 500 is arranged between the cold conducting surface and the placing cavity 300, the heat dissipation module 100 is used for downwards guiding out heat generated by the heat dissipation surface 420, and the cold conducting module 200 is used for upwards guiding out cold air generated by the refrigerating surface 410 to the placing cavity 300 through the conversion air valve 500.

Further, the placement chamber 300 includes an inner chamber 310 and an outer layer 320, the outer layer 320 surrounding the inner layer. The outer layer 320 is sequentially divided into a vacuum outer layer 321, a vacuum inner layer 322 and a quenching inner layer 323 from outside to inside, the vacuum inner layer 322 and the vacuum outer layer 321 form a vacuum layer, and the vacuum inner layer 322 and the quenching inner layer 323 form a quenching layer; the surface distribution of inner chamber 310 has a plurality of wind channel holes 311, and inner chamber 310 is used for placing the breast milk bag, and the surface distribution of inner chamber 310 has a plurality of freezer pipes 330, all stores the refrigerating fluid in every freezer pipe 330. In this embodiment, inner vacuum layer 322 and outer vacuum layer 321 form a vacuum layer that assists in maintaining the temperature of inner chamber 310 to reduce cold loss from inner chamber 310 and maintain the temperature of inner chamber 310 constant.

Further, the modular breast milk refrigerator further comprises a box cover 700, a main control module is installed in the box cover 700, keys are arranged on the surface of the box cover 700, the main control module is respectively connected with the key module 710, the heat dissipation module 100, the cold guide module 200, the switching air valve 500 and the refrigerating sheet 400, the main control module is used for detecting the condition that the key module 710 is pressed down, and outputting a first control signal or a second control signal to the switching air valve 500 according to the condition that the key module 710 is pressed down, and the first control signal and the second control signal are both used for controlling the switching air valve 500 to be opened and closed.

Specifically, referring to fig. 2 and 3, the switching gas valve 500 includes a four-corner gas valve 520 and a central gas valve 510, the first control signal is used to control the central gas valve 510 to close and control the four-corner gas valve 520 to open, and cold gas enters the quenching inner layer 323 through the four-corner gas valve 520 to freeze the freezing liquid, so as to achieve the effect of freezing the breast milk bag placed in the inner cavity 310; the second control signal is used to control the central air valve 510 to open and the four corner air valves 520 to close, so that the cold air enters the inner cavity 310 through the air passage holes 311 and flows back to the cold guiding module 200 through the central air valve 510.

Further, the key module 710 includes a normal mode selection key, a cooling mode selection key and a power key, and the power key is used for turning on and off the modular breast milk refrigerator; the refrigeration mode selection module is used for placing the modular breast milk refrigerator in a refrigeration mode, and when the main control module detects that the refrigeration mode selection key is pressed down, a first control signal is output; the normal mode selection key is used for placing the modular breast milk refrigerator in a normal mode, and when the main control module detects that the normal mode selection key is pressed, a second control signal is output.

The utility model provides a modularization breast milk refrigerator has two kinds of mode, is common mode and rapid cooling mode respectively, can switch through setting up the button module 710 on case lid 700 surface the mode of modularization breast milk refrigerator.

In this embodiment, when the cooling mode selection key is pressed, the modular breastmilk refrigerator is placed in the cooling mode. The main control module detects that the refrigeration mode selection key is pressed, the main control module outputs a first control signal to the switching air valve 500, the central air valve 510 of the switching air valve 500 is closed, the four-corner air valve 520 of the switching air valve is opened, the cold guide module 200 blows out cold air made by the refrigeration sheet 400 from bottom to top through the four-corner air valve 520 at the moment, the cold air enters the quenching inner layer 323, the refrigerating fluid in the refrigerating pipe 330 is frozen, and the effect of refrigerating and heat preserving for the breast milk bag stored in the inner cavity 310 is achieved.

In this embodiment, when the normal mode selection key is pressed, the modular breast milk refrigerator is placed in the normal mode. When the main control module detects that the common mode selection key is pressed, the main control module outputs a second control signal to the switching air valve 500, the central air valve 510 of the switching air valve 500 is opened, the four-corner air valve 520 of the switching air valve is closed, and the cold guide module 200 guides cold air produced by the refrigeration sheet 400 into the quenching inner layer 323 from bottom to top through the central air valve 510, blows the cold air into the inner cavity 310 through the air passage hole 311, and flows back to the cold guide module 200 through the central air valve 510.

Further, referring to fig. 4 and 5, an end of the inner cavity 310 close to the conversion air valve 500 is a lower cavity end, an end of the inner cavity 310 far from the conversion air valve 500 is an upper cavity end, and the diameters of the holes of the air duct holes 311 are sequentially increased from the lower cavity end to the upper cavity end. In this embodiment, when the modular breast milk refrigerator is placed under the normal mode, cold air blows into the quenching inner layer 323 from bottom to top, and the temperature of the lower cavity end is lower than the temperature of the upper cavity end at this moment, and the wind speed of the lower cavity end is higher than the wind speed of the upper cavity end, and in order to ensure that the temperature distribution in the inner cavity 310 is uniform, the hole diameter of the air duct hole 311 is sequentially increased from the lower cavity end to the upper cavity end, so that the cold air blown into the lower cavity end is less than that blown into the upper cavity end, and the breast milk bag placed in the placing cavity 300 is ensured to be uniformly cooled.

Further, the bottom of the box body is further provided with heat dissipation holes 600, the heat dissipation holes 600 are distributed on the shell of the box body in a strip shape, the heat dissipation holes 600 are used for heat dissipation and ventilation of the heat dissipation module 100, and the heat generated by the heat conduction surface of the heat dissipation module 100 is conducted to the bottom of the box body and is discharged out of the box body through the heat dissipation holes 600.

Further, the heat dissipation module 100 includes a heat dissipation fin 110 and a heat dissipation fan 120, one end of the heat dissipation fin 110 contacts with the refrigeration sheet 400, the other end of the heat dissipation fin 110 is fixedly connected with the heat dissipation fan 120, the heat dissipation fin 110 is used for transferring heat of the heat dissipation surface 420 downwards, and the heat dissipation fan 120 is used for discharging the heat of the heat dissipation surface 420 out of the box body from the heat dissipation hole 600.

Specifically, referring to fig. 6, the heat dissipating fin 110 has a radian, one end of the heat dissipating fin 110 close to the heat dissipating surface 420 is a first convex surface, the first convex surface contacts with the heat dissipating surface 420, one end of the heat dissipating fin 110 far from the heat dissipating surface 420 is a first concave surface, the heat dissipating fan 120 is located below the first concave surface, and the heat dissipating fan 120 is connected to the main control module. In this embodiment, the heat dissipating fin 110 has a curved section, which guides the hot air generated from the heat dissipating surface 420, so that the hot air generated from the heat dissipating surface 420 moves downward and is discharged out of the case by the heat dissipating fan 120.

Further, the cold guide module 200 includes a cold guide fin 210 and a cold guide fan 220, one end of the cold guide fin 210 is in contact with the refrigeration sheet 400, the other end of the cold guide fin 210 is connected to the cold guide fan 220, the cold guide fin 210 is used for transferring cold air produced by the refrigeration surface 410 upwards, and the cold guide fan 220 is used for guiding the cold air into the placing cavity 300.

Specifically, the cooling fins 210 are similar to the heat dissipation fins 110, and the cooling fins 210 have a curvature. The end of the cold guiding fin 210 close to the refrigerating surface 410 is a second convex surface, the second convex surface contacts with the refrigerating surface 410, the end of the cold guiding fin 210 far away from the refrigerating surface 410 is a second concave surface, the cold guiding fan 220 is located above the second concave surface, and the cold guiding fan 220 is connected with the main control module. In this embodiment, the cooling fins 210 have a curved cross section, which guides the cooling air generated by the cooling surface 410, so that the cooling air generated by the cooling surface 410 moves upward into the placing cavity 300. And when the modular breast-milk refrigerator is in a normal mode, cold air enters the inner cavity 310 from the air duct hole 311 and flows back to the cold guide module 200 from the central air valve 510, and due to the second concave surface of the cold guide fin 210, the cold air flowing back to the second concave surface moves upwards along the concave arc surface and moves to the air duct hole 311 again, so that air circulation is realized.

Further, still be provided with temperature sensor, power module and battery module in case lid 700, host system respectively with battery, power module, temperature sensor electricity are connected, and power module is connected with the battery electricity, and the battery is used for working do when modularization breast milk refrigerator does not insert the electricity do modularization breast milk refrigerator power supply, power module are used for do when modularization breast milk refrigerator inserts the electricity modularization breast milk refrigerator power supply to for charging for the battery, temperature sensor is used for detecting the temperature parameter of inner chamber 310 feeds back to host system, the host system storage the temperature parameter of inner chamber 310. The surface of case lid 700 still is provided with pilot lamp 720, and pilot lamp 720 is connected with the master control module, and pilot lamp 720 is used for instructing the running state of modularization breast milk refrigerator.

Further, the side of box still is provided with the plug, the plug is used for modularization breast milk refrigerator charges. In particular, when the modular breast milk refrigerator is plugged in, the main control module selects a power supply module as a power supply source of the modular breast milk refrigerator, and the power supply module charges a battery. When the modular breast milk refrigerator is not plugged in, the main control module selects a battery as a power supply source of the modular breast milk refrigerator.

In this embodiment, the ESP32 is used as the master control module. The temperature threshold value of the inner cavity 310 is preset before use, when the main control module judges that the temperature parameter of the inner cavity 310 is higher than the temperature threshold value of the inner cavity 310, the main control module controls the indicator lamp 720 to flash to give an alarm prompt, and temperature information and the alarm information are fed back to a mobile phone client through Bluetooth. The main control module is also used for recording the storage time of the breast milk bag stored in the inner cavity 310 and feeding back the storage time to the mobile phone client through the Bluetooth.

The application provides a pair of modularization breast milk refrigerator has refrigeration, heat retaining function, and its refrigeration, heat retaining working process and principle are as follows:

referring to fig. 7 and 8, according to whether the power is plugged, the main control module selects a power supply source, where the power supply source includes a battery and a power module; pressing the power button starts the modular breast milk refrigerator, and the cold guide fan 220, the heat radiation fan 120 and the refrigeration sheet 400 work.

The refrigeration process is as follows: pressing down the refrigeration mode selection key, after the master control module detects that the refrigeration mode selection key is pressed down, the master control module outputs a first control signal to the switching air valve 500, at the moment, the central air valve 510 is closed, the four-corner air valve 520 is opened, cold air made by the refrigeration sheet 400 is sent into the quenching inner layer 323 through the four-corner air valve 520 from bottom to top under the action of the cold guide fan 220, refrigerating fluid stored in the refrigerating pipe 330 is frozen under the action of the cold air, the temperature of the inner cavity 310 is reduced, and then the breast milk bag placed in the inner cavity 310 is in the environment of the storage temperature.

The heat preservation process comprises the following steps: when the normal mode selection key is pressed, the main control module outputs a second control signal to the switching air valve 500 after detecting that the normal mode selection key is pressed, at the moment, the central air valve 510 is opened, the four-corner air valve 520 is closed, and the cold air produced by the refrigeration sheet 400 is sent into the quenching inner layer 323 through the central air valve 510 from bottom to top under the action of the cold guide fan 220 and enters the inner cavity 310 through the air duct hole 311. As the diameters of the air duct holes 311 are sequentially increased from bottom to top, all parts in the inner cavity 310 are uniformly cooled. The cold air entering the inner cavity 310 flows back to the cold guiding fin 210 through the central air valve 510, and the second concave surface of the cold guiding fin 210 enables the cold air to move upwards to the air duct hole 311 again, so that air circulation is formed, and the temperature of the storage cavity 300 is kept at the storage temperature of the breast milk bag.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and changes without departing from the spirit of the invention.

Claims (10)

1. A modular breastmilk refrigerator, comprising: the refrigerator comprises a box body, wherein a refrigerating piece, a cold guide module and a placing cavity are arranged in the box body, the placing cavity is positioned above the cold guide module, the refrigerating piece is positioned below the cold guide module and used for producing cold air, the refrigerating piece comprises a refrigerating surface, the refrigerating surface is in contact with the cold guide module, a conversion air valve is arranged between the cold guide module and the placing cavity, and the cold guide module is used for guiding the cold air upwards out to the placing cavity through the conversion air valve; the placing cavity comprises an inner cavity, a plurality of air duct holes and a plurality of freezing pipes are distributed on the surface of the inner cavity, the inner cavity is used for placing breast milk bags, and freezing liquid is stored in the freezing pipes;

further comprising: the refrigerator comprises a refrigerator cover, a main control module, a cold guide module, a switching air valve and a refrigerating piece, wherein the main control module is installed in the refrigerator cover, a key module is arranged on the surface of the refrigerator cover, the main control module is respectively connected with the key module, the cold guide module, the switching air valve and the refrigerating piece, the main control module is used for detecting the condition that the key module is pressed down and outputting a first control signal to the switching air valve according to the condition that the key module is pressed down, the switching air valve comprises a four-corner air valve and a central air valve, the first control signal is used for controlling the central air valve to be closed and the four-corner air valve to be opened, cold air enters an inner cavity through the four-corner air valve, and refrigerating fluid is frozen;

the main control module is further used for outputting a second control signal to the switching air valve according to the condition that the key module is pressed down, the second control signal is used for controlling the central air valve to be opened and the four-corner air valve to be closed, and the cold air enters the inner cavity through the air passage hole and flows back to the cold guide module from the central air valve.

2. The modular breast milk refrigerator of claim 1, wherein the end of the inner chamber close to the switching air valve is a lower chamber end, the end of the inner chamber far away from the switching air valve is an upper chamber end, and the diameter of the hole of the air duct hole increases from the lower chamber end to the upper chamber end in sequence.

3. The modular breast milk refrigerator as claimed in claim 1, wherein the cavity further comprises an outer layer, the outer layer covers the inner cavity, the outer layer is divided into an outer vacuum layer, an inner vacuum layer and an inner quenching layer from outside to inside, the outer vacuum layer and the inner vacuum layer form a vacuum layer, the vacuum layer is used for keeping the temperature of the inner cavity at a constant temperature, and the freezing pipe is located between the inner quenching layer and the inner cavity.

4. The modular breast milk refrigerator as claimed in claim 1, wherein a heat dissipation module is further arranged in the refrigerator body, and the heat dissipation module is located at the bottommost part of the refrigerator body and below the refrigerating sheet; the refrigerating sheet further comprises a heat dissipation surface, the heat dissipation module is in contact with the heat dissipation surface, and the heat dissipation module is connected with the main control module; the bottom of the shell of the box body is provided with heat dissipation holes, the heat dissipation holes are used for heat dissipation and ventilation of the heat dissipation module, and the heat dissipation module is used for guiding heat generated by the refrigeration piece downwards to the outside of the box body through the heat dissipation holes.

5. The modular breast milk refrigerator of claim 4, wherein the heat dissipation module comprises a heat dissipation fin and a heat dissipation fan, one end of the heat dissipation fin is in contact with the refrigeration sheet, the other end of the heat dissipation fin is fixedly connected with the heat dissipation fan, the heat dissipation fin is used for transferring heat of the heat dissipation surface downwards, and the heat dissipation fan is used for dissipating the heat of the heat dissipation surface out of the refrigerator body through the heat dissipation hole.

6. The modular breast milk refrigerator of claim 5, wherein the heat dissipation fin has an arc, an end of the heat dissipation fin close to the heat dissipation surface is a first convex surface, the first convex surface contacts with the heat dissipation surface, an end of the heat dissipation fin far away from the heat dissipation surface is a first concave surface, the heat dissipation fan is located below the first concave surface, and the heat dissipation fan is connected with the main control module.

7. The modular breastmilk refrigerator of claim 1 wherein the cold directing module comprises a cold directing fin and a cold directing fan, one end of the cold directing fin is in contact with the chilling plate, the other end of the cold directing fin is connected to the cold directing fan, the cold directing fin is configured to transfer cold air produced by the chilling face upward, and the cold directing fan is configured to direct the cold air into the holding cavity.

8. The modular breast milk refrigerator of claim 7, wherein the cooling fin has an arc, the end of the cooling fin close to the refrigerating surface is a second convex surface, the second convex surface contacts with the refrigerating surface, the end of the cooling fin far away from the refrigerating surface is a second concave surface, the cooling fan is located above the second concave surface, and the cooling fan is connected with the main control module.

9. The modular breast milk refrigerator of claim 1, wherein a plug is arranged on a side surface of the refrigerator body and used for charging the modular breast milk refrigerator, and the main control module selects a power supply source of the modular breast milk refrigerator according to whether the plug is plugged; the case cover is internally provided with a temperature sensor, a power supply module and a battery, the main control module is respectively electrically connected with the battery, the power supply module and the temperature sensor, the power supply module is electrically connected with the battery, the battery is used for supplying power to the modular breast milk refrigerator when the modular breast milk refrigerator is not plugged, and the power supply module is used for supplying power to the modular breast milk refrigerator and charging the battery when the modular breast milk refrigerator is plugged;

the temperature sensor is electrically connected with the main control module, the temperature sensor is used for detecting the temperature parameter of the inner cavity and feeding the temperature parameter back to the main control module, and the main control module stores the temperature parameter of the inner cavity;

the surface of case lid still is provided with the pilot lamp, the pilot lamp with master control module connects, the pilot lamp is used for instructing the running state of modularization breast milk refrigerator.

10. The modular breastmilk refrigerator of claim 1 wherein the key module comprises a normal mode select key, a cooling mode select key, and a power key for turning the modular breastmilk refrigerator on and off; the refrigeration mode selection is used for placing the modular breast milk refrigerator in a refrigeration mode, and when the main control module detects that the refrigeration mode selection key is pressed, a first control signal is output; the common mode selection key is used for placing the modular breast milk refrigerator in a common mode, and when the main control module detects that the common mode selection key is pressed, a second control signal is output.

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