A vehicle-mounted rapid-cooling beverage refrigerator and a refrigeration method of the vehicle-mounted rapid-cooling beverage refrigerator

Abstract

The application discloses a vehicle-mounted quick-cooling beverage refrigerator and a refrigeration method thereof, which comprises a shell, a refrigeration chamber, an evaporator assembly, a condenser and a compressor; the evaporator assembly comprises a first evaporator arranged on the side wall of the refrigeration chamber and a second evaporator arranged on the bottom side of the refrigeration chamber; and the first evaporator comprises an inlet end, a pre-cooling channel, a super-cooling liquid storage channel and an outlet end, and the bottom side of the super-cooling liquid storage channel is provided with a super-cooling liquid storage cavity capable of storing liquid refrigerant. In this way, the liquid refrigerant is stored in the super-cooling liquid storage cavity, and compared with the evaporator without the super-cooling liquid storage cavity, the amount of gaseous refrigerant circulating in the refrigeration system is smaller, the pressure in the first evaporator is lower, and the boiling point of the liquid refrigerant is lower. When the beverage is cooled, the refrigeration efficiency is higher because the heat absorption speed is faster and the heat absorption amount is larger when the refrigerant in the super-cooling liquid storage cavity changes from liquid state to gaseous state for heat exchange.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and more particularly to a vehicle-mounted rapid-cooling beverage refrigerator and a refrigeration method for the vehicle-mounted rapid-cooling beverage refrigerator. Background Technology

[0002] In summer, people typically chill beverages in the refrigerator before drinking the ice-cold drinks to cool down and beat the heat. With societal development, the demand for rapid beverage cooling has become even more urgent. However, simply placing beverages in the refrigerator's crisper compartment is time-consuming and inefficient. Related technologies incorporate a cooling device with a container. Beverages are placed inside the container, contacting one side wall. The other side wall houses the refrigerant. Heat from the beverage is transferred to the refrigerant through the side wall, achieving rapid cooling. During the cooling process, heat exchange with the refrigerant is the primary means of achieving cooling. Insufficient or inadequate refrigerant supply affects the cooling rate and increases the cooling time. This is especially true for car refrigerators, which generally have low power and limited refrigerant capacity, resulting in longer cooling times and a less pleasant user experience. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a vehicle-mounted fast-cooling beverage refrigerator that can store liquid refrigerant through an evaporator to absorb a large amount of heat to achieve rapid cooling when beverages are cooled, and a cooling method for the vehicle-mounted fast-cooling beverage refrigerator.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows:

[0005] A vehicle-mounted rapid-cooling beverage refrigerator includes a shell with a refrigerator compartment, an evaporator assembly disposed within the refrigerator compartment, and a condenser and a compressor disposed on the shell. The evaporator assembly includes a first evaporator disposed on the side wall of the refrigerator compartment and a second evaporator disposed on the bottom side of the refrigerator compartment. The first evaporator includes an inlet end, a pre-cooling channel, a subcooled liquid storage channel, and an outlet end arranged sequentially along the refrigerant flow direction. The bottom side of the subcooled liquid storage channel is provided with a subcooled liquid storage chamber for storing liquid refrigerant. The second evaporator is connected in series with the first evaporator. The first evaporator is connected to the compressor, and the second evaporator is connected to the condenser.

[0006] In a preferred embodiment of the present invention, the inlet end and the outlet end are located on the same side of the first evaporator, and the outlet end is located above the inlet end. The precooling channel includes a plurality of U-shaped channels.

[0007] In a preferred embodiment of the present invention, there are two first evaporators, which are respectively disposed on the left and right side walls of the refrigerator compartment.

[0008] In a preferred embodiment of the present invention, a refrigeration centrifugal fan is provided at the top of the refrigeration compartment, and an air guide bracket is provided inside the refrigeration compartment below the refrigeration centrifugal fan.

[0009] In a preferred embodiment of the present invention, the bottom of the refrigerator compartment is provided with a beverage rack, and the beverage rack is provided with a storage slot for placing beverages.

[0010] In a preferred embodiment of the present invention, a gravity sensor is provided in the storage slot; a control board connected to the gravity sensor, and a timer and a buzzer connected to the control board are provided on the housing.

[0011] In a preferred embodiment of the present invention, the refrigerator compartment is provided with a temperature sensor and an indicator light connected to the control panel.

[0012] The present invention also provides a refrigeration method for a vehicle-mounted rapid-cooling beverage refrigerator, using the rapid-cooling beverage refrigerator as described above, and the refrigeration method of the rapid-cooling beverage refrigerator is as follows:

[0013] ① After the quick-cooling beverage refrigerator is powered on, the temperature inside the refrigerator compartment will continue to decrease. When the temperature drops to the set temperature value, the liquid refrigerant in the subcooled storage chamber of the first evaporator will be full. The indicator light will illuminate to remind the user that the pre-cooling is complete, and the beverage refrigerator compartment can then be refrigerated.

[0014] ② After the beverage is placed in the refrigerator compartment, the gravity sensor in the storage compartment will detect the beverage being placed in, and the timer will start to start the cooling process. When the beverage is placed in the refrigerator compartment, the temperature of the refrigerator compartment will rise, causing the liquid refrigerant stored in the first evaporator to evaporate, thereby absorbing the heat in the refrigerator compartment and cooling the beverage placed in the refrigerator compartment. In addition, the quick-cooling beverage refrigerator will continue to operate during this process, and the heat on the beverage can be directly transferred to the second evaporator for absorption by the beverage rack set at the bottom of the refrigerator compartment, and the beverage will be cooled by the cooling centrifugal fan set at the top of the refrigerator compartment.

[0015] ③ When the timer finishes counting down, the quick-cooling beverage refrigerator will stop cooling and will remind the user to take out the beverage by emitting a buzzer or an indicator light.

[0016] The beneficial effects of this invention are as follows: The quick-cooling beverage refrigerator includes a shell, a refrigerator compartment, an evaporator assembly, a condenser, and a compressor. The evaporator assembly includes a first evaporator disposed on the side wall of the refrigerator compartment and a second evaporator disposed on the bottom side of the refrigerator compartment. The first evaporator includes an inlet end, a pre-cooling channel, a subcooled liquid storage channel, and an outlet end sequentially arranged along the refrigerant flow direction. A subcooled liquid storage chamber for storing liquid refrigerant is also provided at the bottom side of the subcooled liquid storage channel. By storing liquid refrigerant in the subcooled liquid storage chamber, compared to an evaporator without a subcooled liquid storage chamber, the amount of gaseous refrigerant circulating within the refrigeration system is reduced, resulting in lower pressure within the first evaporator and a lower boiling point for the liquid refrigerant. Therefore, when a beverage is placed in the refrigerator compartment for cooling, the refrigerant in the subcooled liquid storage chamber undergoes heat exchange by changing from a liquid to a gaseous state, resulting in faster heat absorption and a larger amount of heat absorbed, leading to higher refrigeration efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a vehicle-mounted rapid-cooling beverage refrigerator according to the present invention;

[0018] Figure 2 This is an unfolded view of the first evaporator in a vehicle-mounted rapid-cooling beverage refrigerator according to the present invention; Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0020] Reference Figures 1 to 2A vehicle-mounted quick-cooling beverage refrigerator includes a shell 1 with a refrigerator compartment 11, an evaporator assembly 2 disposed within the refrigerator compartment 11, and a condenser 3 and a compressor 4 disposed on the shell 1. The evaporator assembly 2 includes a first evaporator 21 disposed on the side wall of the refrigerator compartment 11 and a second evaporator 22 disposed on the bottom side of the refrigerator compartment 11. The second evaporator 22 is a conventionally used evaporator. The first evaporator 21 includes an inlet end, a pre-cooling channel 213, a subcooled liquid storage channel 214, and an outlet end 212 arranged sequentially along the refrigerant flow direction. The bottom side of the subcooled liquid storage channel 214 is provided with a subcooled liquid storage chamber 215 for storing liquid refrigerant. The second evaporator 22 is connected in series with the first evaporator 21, and the first evaporator 21 is connected to the compressor 4. The second evaporator 22 is connected to the condenser 3, thereby forming the refrigeration system of the vehicle-mounted quick-cooling beverage refrigerator. In this way, as the vehicle-mounted rapid-cooling beverage refrigerator cools down, during pre-cooling in the refrigerator compartment 11, the refrigerant enters the subcooled liquid storage channel 214 through the pre-cooling channel 213. A portion of the liquid refrigerant then flows into the subcooled liquid storage chamber 215 for storage. Because the amount of liquid refrigerant stored in the subcooled liquid storage chamber 215 increases, only a portion of the refrigerant circulates within the pipes. Compared to an evaporator without a subcooled liquid storage chamber 215, with the total amount of refrigerant remaining the same, this design circulates less gaseous refrigerant, resulting in lower pressure within the first evaporator 21. Consequently, the boiling point of the liquid refrigerant in the subcooled liquid storage chamber 215 is lower than that of the liquid refrigerant in a conventional evaporator. In other words, assuming stable operating conditions, the amount of gaseous and liquid refrigerant in the refrigeration system is equal, each 500g. Under the same conditions, the amount of liquid refrigerant in the refrigeration system of this application will be greater than half, i.e., greater than 500g, while the amount of gaseous refrigerant will be less than 500g. This results in lower gas pressure and a lower boiling point for the liquid refrigerant. Thus, when the beverage is placed in the refrigerator compartment 11 for cooling, the refrigerant in the subcooled liquid storage chamber undergoes heat exchange by changing from liquid to gas, resulting in faster heat absorption and a greater amount of heat absorbed, leading to higher refrigeration efficiency. Furthermore, the first evaporator 21 is located on the side wall of the refrigerator compartment 11, and its subcooled liquid storage chamber 215 stores liquid refrigerant that can directly exchange heat with the beverage in the refrigerator compartment 11, preventing heat loss during the circulation of this portion of the refrigerant in the refrigeration system and further improving refrigeration efficiency.

[0021] In this design, the first evaporator 21 includes an inlet end 211 and an outlet end 212 located on the same side, with the outlet end 212 situated above the inlet end 211. The precooling channel 213 includes several U-shaped channels, and a subcooled liquid storage chamber 215 is located above the recesses of the U-shaped channels. Preferably, there is one subcooled liquid storage chamber 215, and all the precooling channels 213 surround the subcooled liquid storage chamber 215. Figure 2It can be seen that the evaporator is folded along its fold line, which allows the subcooled liquid storage chamber 215 to have sufficient capacity to store liquid refrigerant, thus absorbing a large amount of heat when cooling beverages. At the same time, the cross-sectional area of ​​the subcooled liquid storage channel 214 is larger than that of the precooling channel 213, which facilitates the flow of liquid refrigerant through the subcooled liquid storage channel 214 into the subcooled liquid storage chamber 215 for storage.

[0022] In this scheme, there are two first evaporators 21, which are respectively installed on the left and right side walls of the refrigerator compartment 11. Similarly, the second evaporator 22 can be divided into left and right parts, with the left part connected in series with the first evaporator 21 located on the left side and the right part connected in series with the first evaporator 21 located on the right side.

[0023] In this design, a centrifugal fan 5 is installed at the top of the refrigerator compartment 11, and an air guide bracket 12 is installed inside the refrigerator compartment 11 and below the centrifugal fan 5. The centrifugal fan 5 blows air to cool the beverage placed in the refrigerator compartment 11, and the air guide bracket 12 guides the air blown out by the centrifugal fan 5, thereby forming a cold air circulation within the refrigerator compartment 11 and improving the cooling effect.

[0024] In this design, the bottom of the refrigerator compartment 11 is equipped with a beverage support 13 made of metal, and the beverage support 13 has a storage slot 131 for placing beverages. This allows heat to be quickly transferred to the second evaporator 22 for heat exchange, thereby rapidly cooling the beverages. A gravity sensor 14 is installed in the storage slot 131 to detect whether a beverage is placed there. A control board 15 (a PCB board) connected to the gravity sensor 14 is also installed on the housing 1, along with a timer 16 and a buzzer 17 connected to the control board 15. The timer 16 controls the cooling time of the beverages, and the buzzer 17 sounds to alert the user when the timer is complete.

[0025] In this solution, a temperature sensor 18 and an indicator light 19 connected to the control board 15 are installed in the refrigerator compartment 11. The temperature sensor 18 is used to detect the temperature inside the refrigerator compartment 11 and determine whether the refrigerator compartment 11 has been pre-cooled.

[0026] The present invention also provides a refrigeration method for a vehicle-mounted quick-cooling beverage refrigerator, which employs the quick-cooling beverage refrigerator as described above, and the refrigeration method of the quick-cooling beverage refrigerator is as follows:

[0027] ① After the vehicle-mounted fast-cooling beverage refrigerator is powered on, the temperature inside the refrigerator compartment 11 will continue to decrease. When the temperature drops to the set temperature value, the liquid refrigerant in the subcooled liquid storage chamber 215 of the first evaporator 21 will be full. The indicator light 19 will light up to remind the user that the pre-cooling is complete, and the beverage refrigerator compartment 11 can be refrigerated.

[0028] ② After the beverage is placed in the refrigerator compartment 11, the gravity sensor 14 in the storage compartment 131 will detect the beverage being placed in, and the timer 19 will start timing to start the cooling operation. When the beverage is placed in the refrigerator compartment 11, the temperature of the refrigerator compartment 11 will rise, causing the liquid refrigerant stored in the first evaporator 21 to evaporate, thereby absorbing a large amount of heat, which cools the beverage placed in the refrigerator compartment 11. In addition, during this process, the quick-cooling beverage refrigerator will continue to operate, and through the beverage rack 13 set at the bottom of the refrigerator compartment 11, the heat on the beverage can be directly transferred to the second evaporator 22 for heat exchange, and the cooling centrifugal fan 5 set at the top of the refrigerator compartment 11 will cool the beverage.

[0029] ③ When the timer 16 finishes counting, the quick-cooling beverage refrigerator stops cooling and reminds the user to take out the beverage by emitting a buzzer signal through the buzzer 17 or a light signal through the indicator light 19.

[0030] In step ② above: when the beverage is placed in the refrigerator compartment 11 for cooling, the second evaporator 22 at the bottom will absorb heat and cool, and then the first evaporator 21 on the side will absorb heat and cool. This allows the second evaporator 22 to directly absorb heat and cool the beverage placed in the storage compartment 131 through the beverage holder 13 when the beverage is placed in the storage compartment 131 for cooling, without having to wait for the heat to dissipate before starting to cool, thus improving the efficiency of beverage cooling.

Claims

1. A vehicle-mounted quick-cooling beverage refrigerator, comprising a housing (1) having a refrigerator compartment (11), an evaporator assembly (2) disposed within the refrigerator compartment (11), and a condenser (3) and a compressor (4) disposed on the housing (1), characterized in that, The evaporator assembly (2) includes a first evaporator (21) disposed on the side wall of the refrigerator compartment (11) and a second evaporator (22) disposed on the bottom side of the refrigerator compartment (11). The first evaporator (21) includes an inlet end, a precooling channel (213), a subcooled liquid storage channel (214), and an outlet end (212) arranged sequentially along the refrigerant flow direction. The bottom side of the subcooled liquid storage channel (214) is provided with a subcooled liquid storage chamber (215) for storing liquid refrigerant. The second evaporator (22) is connected in series with the first evaporator (21). The first evaporator (21) is connected to the compressor (4), and the second evaporator (22) is connected to the condenser (3); the inlet end (211) and the outlet end (212) are located on the same side of the first evaporator (21), and the outlet end (212) is located above the inlet end (211); the precooling channel (213) includes several U-shaped channels; the subcooled liquid storage chamber (215) is located above the recess of the U-shaped channel, and the precooling channels (213) are all surrounding the subcooled liquid storage chamber (215).

2. The vehicle-mounted rapid-cooling beverage refrigerator according to claim 1, characterized in that, There are two first evaporators (21), which are respectively installed on the left and right side walls of the cold storage compartment (11).

3. The vehicle-mounted rapid-cooling beverage refrigerator according to claim 1, characterized in that, The top of the cold storage compartment (11) is provided with a refrigeration centrifugal fan (5), and the cold storage compartment (11) is provided with an air guide bracket (12) located below the refrigeration centrifugal fan (5).

4. A vehicle-mounted rapid-cooling beverage refrigerator according to any one of claims 1 to 3, characterized in that, The bottom of the refrigerator compartment (11) is provided with a beverage rack (13), and the beverage rack (13) is provided with a storage slot (131) for placing beverages.

5. A vehicle-mounted rapid-cooling beverage refrigerator according to claim 4, characterized in that, The storage slot (131) is equipped with a gravity sensor (14); the housing (1) is equipped with a control board (15) connected to the gravity sensor (14), and a timer (16) and a buzzer (17) connected to the control board (15).

6. A vehicle-mounted rapid-cooling beverage refrigerator according to claim 5, characterized in that, The cold storage compartment (11) is equipped with a temperature sensor (18) and an indicator light (19) connected to the control board (15).

7. A refrigeration method for a vehicle-mounted rapid-cooling beverage refrigerator, characterized in that, The rapid-cooling beverage refrigerator as described in claim 6 has the following refrigeration method: ① After the vehicle-mounted fast-cooling beverage refrigerator is powered on, the temperature inside the refrigerator compartment (11) will continue to decrease. When the temperature drops to the set temperature value, the liquid refrigerant in the supercooled storage chamber (215) of the first evaporator (21) will be full. The indicator light (19) will light up to remind the user that the pre-cooling is complete. Then, put the beverage into the refrigerator compartment (11) for refrigeration. ② After the beverage is placed in the refrigerator compartment (11) for refrigeration, the gravity sensor (14) in the storage compartment (131) will detect the beverage being placed in, and the timer (16) will start timing to carry out the refrigeration work. When the beverage is placed in the refrigerator compartment (11), the temperature of the refrigerator compartment (11) will rise, causing the liquid refrigerant stored in the first evaporator (21) to evaporate, thereby absorbing the heat in the refrigerator compartment (11) and cooling the beverage placed in the refrigerator compartment (11). In addition, during this process, the quick-cooling beverage refrigerator will continue to operate, and through the beverage rack (13) set at the bottom of the refrigerator compartment (11), the heat on the beverage can be directly transferred to the second evaporator (22) for heat exchange, and the refrigeration centrifugal fan (5) set at the top of the refrigerator compartment (11) will cool the beverage. ③ When the timer (16) finishes counting, the quick-cooling beverage refrigerator will stop cooling and will remind the user to take out the beverage by emitting a buzzer signal (17) or a light signal (19).

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