CN216745149U

CN216745149U - Miniature refrigerator

Info

Publication number: CN216745149U
Application number: CN202123114718.8U
Authority: CN
Inventors: 艾伦·戴意科斯侤
Original assignee: Shenzhen Kaiyan Medical Equipment Co ltd
Current assignee: Shenzhen Kaiyan Medical Equipment Co ltd
Priority date: 2021-12-11
Filing date: 2021-12-11
Publication date: 2022-06-14
Anticipated expiration: 2031-12-11

Abstract

The utility model discloses a micro refrigerator, which comprises a shell, a control circuit board arranged in the shell, a refrigerating sheet and a battery, wherein the refrigerating sheet and the battery are electrically connected with the control circuit board; the refrigerating piece is a semiconductor refrigerating piece and comprises a cold end and a hot end; the cold end of the refrigeration piece is in close contact with the cold joint; the hot end of the refrigeration piece is also provided with a heat dissipation device. The utility model discloses a semiconductor refrigeration piece refrigeration, simple structure is small and exquisite, portable can the accurate control temperature, both has been applicable to ordinary medical low temperature preservation case of going out, also has fine low temperature to daily consumption's beverage, beer etc. and keeps the function.

Description

Miniature refrigerator

Technical Field

The utility model relates to a maintain the refrigerator that liquid low temperature was used, especially a miniature portable refrigerator.

Background

Miniature portable liquid coolers can be used in a variety of applications. For example, in the medical occasion of maintaining the low-temperature environment, the portable medical temperature-keeping device can be conveniently carried out for use without depending on fixed equipment and a fixed power supply to maintain the low temperature. In addition, in high temperature weather, people like to drink low-temperature beverages, especially beer, and in order to maintain low temperature, people generally adopt a mode of adding ice or refrigerating. For example, the barrelled draught beer in a bar is generally sold according to cups by adopting a mode of adding ice, but the beverage or the beer can be diluted by adding the ice, the alcoholic strength of the beer is also reduced, and the original taste of the beverage or the beer is lost. In addition, the temperature cannot be accurately controlled by adding ice or refrigerating.

In any situation, the problem of inconvenient carrying and storage exists when ice cubes or other ways which can not continuously refrigerate are adopted to maintain low temperature. Unlike large and medium-sized or small-sized refrigeration equipment, such as medical cryo-preservation boxes or household refrigerators in which medical institutions fix samples for long-term preservation, micro refrigerators should be portable, can be taken out at any time for use, and can be closed at any time, such as being put in pockets or luggage cases, just like small electrical appliances carried with sound. Of course, refrigerators maintained by ice also cannot do this.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above defect, provide a miniature refrigerator, simple structure convenient to use, convenient to carry can the accurate control refrigeration temperature.

The to-be-solved technical problem of the utility model is realized through following technical scheme.

The micro refrigerator comprises a shell, a control circuit board arranged in the shell, a refrigerating sheet and a battery, wherein the refrigerating sheet and the battery are electrically connected with the control circuit board; the refrigerating piece is a semiconductor refrigerating piece and comprises a cold end and a hot end; the cold end of the refrigeration piece is in close contact with the cold joint; the hot end of the refrigeration piece is also provided with a heat dissipation device.

Preferably, the heat dissipation device comprises a water cooling tank, a water pump and a heat radiator, the water cooling tank is in close contact with the hot end of the refrigerating sheet, and the water cooling tank, the water pump and the heat radiator are connected through a water cooling conduit to form a liquid circulation channel; the fan is further arranged, and an air outlet of the fan faces the radiator.

The water cooling tank, the refrigerating sheet and the cold joint are stacked and then fixedly pressed through the pressing support.

And the temperature sensor is electrically connected with the control circuit board and is arranged on the cold joint close to the refrigerating sheet.

The cold joint is located outside the shell and is connected with the shell in a sealing mode.

The shell is provided with a fixed bracket for fixing the shell on an external object.

The shell and the cold joint are cylindrical, and the shell is a heat-insulating material shell.

The utility model discloses beneficial effect who has with prior art contrast is: the utility model discloses a semiconductor refrigeration piece refrigeration, simple structure is small and exquisite, low cost, portable, its low temperature is through adjusting current control, can the accurate control temperature, both has been applicable to ordinary medical low temperature storage box of going out, also has fine low temperature to daily consumption's beverage, beer etc. and keeps the function. The micro refrigerator is convenient to use, can be simply and conveniently placed in the existing container for use, is not limited by the use place and time, and can be used after being electrified.

Drawings

FIG. 1 is an external structural view of an embodiment;

FIG. 2 is a cross-sectional view of the internal structure of the embodiment;

FIG. 3 is an exploded view of components of an embodiment;

FIG. 4 is a diagram of the components of the cooling circulation system of FIG. 3;

FIG. 5 is a schematic diagram of the embodiment being fixed to an external object.

Detailed Description

The micro refrigerator shown in fig. 1, 2 and 3 has a cylindrical overall shape, and includes a cylindrical cold joint 01, a sealing ring 02, a fixing ring 03, a refrigerating sheet 04, a water cooling tank 05, a water cooling conduit 06, a press-fit bracket 07, a water pump 08, a control switch 09, a control circuit board 10, a battery 11, a fan bracket 12, a fan 14, a radiator 15, an upper cover 16, a cylindrical housing 17 and a temperature sensor 18.

The cold joint 01 is made of food-grade metal materials, and is required to have strong heat conductivity and high-strength acid and alkali resistance. The upper end of the cooling fin is closely contacted and attached with the cold source end of the refrigeration fin 04 and conducts heat with the cold source of the refrigeration fin 04, so that the surrounding environment where the cooling fin is located is cooled.

The sealing ring 02 is made of food-grade silica gel material, has high sealing performance and is used for sealing the fixing ring 03 and the cold joint 01.

The fixing ring 03 is used to connect and fix the cold junction 01 to the housing 17, and is sealed with the seal ring 02. During assembly, the fixing ring 03 is fixed on the inner ring of the shell 17, and the external threads on the side surface of the upper end of the cold joint 01 are screwed with the internal threads of the fixing ring 03.

The refrigerating piece 04 is a semiconductor refrigerating piece. The semiconductor refrigerating chip has a current Peltier effect, when the semiconductor refrigerating chip is electrified, the two ends of the semiconductor refrigerating chip can generate temperature difference, one end of the semiconductor refrigerating chip is a cold end, the temperature of the semiconductor refrigerating chip is lower than the normal temperature, the other end of the semiconductor refrigerating chip is a hot end, the temperature of the semiconductor refrigerating chip is higher than the normal temperature, and the temperature of the cold end can reach 55 ℃ below zero or lower. The semiconductor refrigerating plate has stable performance, and the temperature of the cold end can be conveniently controlled by adjusting the passing current.

The water cooling tank 05 is a liquid heat exchanger, and is provided with a flow passage through which liquid flows and is made of a high heat-conductive metal material. One surface of the water cooling box 05 is tightly attached to the heat source end of the refrigerating sheet 04, and heat generated by the heat end of the refrigerating sheet 04 is transferred to the refrigerating liquid 13 in the water cooling box.

The water-cooling conduit 06 is a liquid circulation pipe made of a high polymer material, has a low evapotranspiration rate, and prevents the refrigerant liquid 13 therein from naturally volatilizing under a high-temperature condition.

The pressing support 07 is made of low heat conduction materials and is used for pressing the refrigerating sheet 04, the cold joint 01 and the water cooling tank 05 so as to keep good heat conduction between the refrigerating sheet 04 and the cold joint 01 and the water cooling tank 05 and fix the water pump 08.

The water pump 08 is made of food-grade materials, and pumps out the refrigerant liquid 13 in the water cooling tank 05 after being electrified and started, and sends the refrigerant liquid into the radiator 12 and then returns to the water cooling tank 05 to keep the refrigerant liquid in the water cooling conduit 06 to circularly flow.

The control switch 09 is installed on the control circuit board 10, and is controlled to be turned on or turned off by wireless Bluetooth or Wifi, and is externally connected with a wireless remote controller, so that parameters such as refrigeration temperature and time can be set.

The control circuit board 10 is a circuit control area, is electrically connected with the battery 11, the refrigerating sheet 14, the temperature sensor 18, the control switch 09, the fan 14, the water pump 08 and the like, is provided with a wireless signal transmission module, receives a wireless control signal and controls the work of each element.

The battery 11 adopts a polymer lithium battery, realizes the characteristics of small volume and large capacity as far as possible, and adopts wireless charging to supply power for the control circuit board 10, the fan 14 and the water pump 08.

The fan bracket 12 is used for fixing the fan 14 and the heat sink 15, and is made of a high thermal conductive metal material.

The fan 14 is used for discharging heat in the radiator 15, and the air inlet faces the radiator 15, and the fan with high rotating speed is adopted, so that the size is small, and the service life is long.

The radiator 15 is made of metal material with high heat conductivity coefficient, a flow channel of the refrigerating fluid 13 and a plurality of radiating fins are arranged inside the radiator, the radiating area is larger as the radiating fins are more, the radiating is faster, and meanwhile, the fan 14 is used for enhancing the air flow radiating.

The upper cover 16 covers the end of the housing 17, and is provided with an air inlet and an air outlet, wherein the air inlet is separated from the air outlet, and the upper cover is provided with holes in different areas and is respectively connected with the air inlet and the air outlet of the fan 14. Is made of food-grade low-heat-conduction material.

The shell 17 is cylindrical, and is internally provided with a sealing ring 02, a fixing ring 03, a refrigerating sheet 04, a water cooling tank 05, a water cooling guide pipe 06, a pressing support 07, a water pump 08, a control switch 09, a control panel 10, a battery 11, a fan support 12, a fan 14, a radiator 15 and the like, and a food-grade low-heat-conduction or heat-insulation material is adopted for taking and placing.

The temperature sensor 18 is used for detecting the temperature at the cold joint and transmitting a signal feedback to the control circuit board, and the control circuit board is close to a proper position of the cold joint 01.

As shown in fig. 4, the water cooling tank 05, the water pump 08, and the radiator 15 are connected by a water cooling pipe 06 to form a closed cooling cycle in which the refrigerant flows. The refrigerant fluid 13 is circulated by the water pump 08. The water cooling box 05 is tightly attached to the hot end of the refrigerating sheet 04, the water cooling box 05 absorbs heat of the refrigerating sheet 04 and transmits the heat to the metal radiator 15 through the refrigerating liquid 13, a flow passage and radiating fins are arranged in the radiator 15, the flow passage penetrates through the radiating fins arranged on the flow passage and rapidly transmits the temperature to the radiating fins, the fan 14 at the lower part of the radiator 15 accelerates air flow and transmits the heat accumulated on the radiating fins out in a convection mode.

As shown in figures 1 and 5, the shell 17 is provided with a fixing bracket 19, when in use, the beverage refrigerator can be fixed in the existing insulation can or in the beverage can, the beer machine or the beer barrel through the fixing bracket 19, and after the beverage refrigerator is opened through wireless remote control, the beverage can be refrigerated, the temperature can be adjusted through the wireless control switch 09, and the use is convenient and simple. Of course, the fixing mode of the refrigerator and the external equipment is various, and is not limited to the bracket, the hook and the like shown in fig. 5.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A micro refrigerator, characterized in that: the refrigerator comprises a shell, a control circuit board arranged in the shell, a refrigerating sheet and a battery, wherein the refrigerating sheet and the battery are electrically connected with the control circuit board; the refrigerating piece is a semiconductor refrigerating piece and comprises a cold end and a hot end; the cold junction is also arranged, and the cold end of the refrigeration sheet is in close contact with the cold junction; the hot end of the refrigeration piece is also provided with a heat dissipation device.

2. A micro refrigerator according to claim 1, wherein: the heat dissipation device comprises a water cooling tank, a water pump and a heat radiator, wherein the water cooling tank is tightly contacted with the hot end of the refrigerating sheet, and the water cooling tank, the water pump and the heat radiator are connected through a water cooling pipe to form a liquid circulation channel; the fan is further arranged, and an air outlet of the fan faces the radiator.

3. A micro refrigerator according to claim 2, wherein: the water cooling tank, the refrigerating sheet and the cold joint are stacked and then fixedly pressed through the pressing support.

4. A micro refrigerator according to claim 1, wherein: and the temperature sensor is electrically connected with the control circuit board and is arranged on the cold joint.

5. A micro refrigerator according to claim 1, wherein: the cold joint is located outside the shell and is connected with the shell in a sealing mode.

6. A micro refrigerator according to any one of claims 1 to 5, characterized in that: the shell is provided with a fixed bracket for fixing the shell on an external object.

7. A micro refrigerator according to claim 6, wherein: the shell and the cold joint are cylindrical, and the shell is a heat-insulating material shell.