Portable vehicle-mounted refrigerator with double refrigerating systems and control method of portable vehicle-mounted refrigerator

Abstract

The invention relates to the technical field of vehicle-mounted refrigerators, in particular to a portable vehicle-mounted refrigerator with double refrigerating systems and a control method of the portable vehicle-mounted refrigerator. The refrigerator comprises a main body, a storage chamber is arranged in the main body, a door body is rotationally installed at the top of the main body, a pluggable battery is installed in the main body, a compressor assembly and a semiconductor refrigeration assembly are arranged in the main body and used for refrigerating the storage chamber, and a control panel is arranged in the main body; the air conditioner has three working states, switching of multiple states is achieved in combination with refrigeration requirements, after an external power source is connected, full-power refrigeration can be started by pressing a freezing switch key for a short time, the two different refrigeration assemblies are started at the same time, and rapid cooling is achieved; when the refrigeration switch key is pressed for a short time, only the semiconductor is used for refrigeration and gentle cooling; under the condition that an external power supply is not connected, a freezing switch key is pressed down, only the compressor is adopted for refrigeration and rapid cooling, and the rapid freezing requirement of a user is met; and under the condition that an external power supply is not connected, batteries are adopted for power supply, and the equipment flexibility is good.

Description

Technical Field

[0001] This invention relates to the field of vehicle refrigerator technology, specifically to a portable vehicle refrigerator with dual refrigeration systems and its control method. Background Technology

[0002] Existing car refrigerators, depending on the needs, use either compressors or semiconductors for cooling. However, portable car refrigerators with only one type of cooling system cannot meet people's diverse freezing and refrigeration needs. For example, when camping or fishing outdoors, car refrigerators with only one type of cooling system have the following drawbacks: 1. Portable car refrigerators with compressor cooling have high energy consumption, short battery life, and loud operating noise; 2. Portable car refrigerators with semiconductor refrigeration have weak cooling performance and slow cooling speed. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a reasonably designed portable vehicle refrigerator with a dual refrigeration system and its control method, which can solve the aforementioned deficiencies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a main body, a storage chamber inside the main body, a door rotatably mounted on the top of the main body, a pluggable battery installed inside the main body, a compressor assembly and a semiconductor refrigeration assembly inside the main body, both of which are used to refrigerate the storage chamber, and a control board inside the main body.

[0005] Preferably, the main body is provided with a refrigeration chamber, and the compressor assembly and the semiconductor refrigeration assembly are both located in the refrigeration chamber.

[0006] Preferably, the compressor assembly includes a compressor located inside the refrigeration compartment, with the compressor outlet connected to a condenser, then connected to a dryer filter and a capillary tube, and finally connected to an evaporator located outside the storage room. The rear end of the evaporator is connected to the compressor inlet, and the condenser is equipped with a condenser cooling fan.

[0007] Preferably, the semiconductor cooling assembly includes a semiconductor chip disposed in a cooling chamber, the cooling surface of the semiconductor chip is connected to the storage chamber through a heat-conducting component, and a semiconductor cooling fan is provided outside the semiconductor chip.

[0008] Preferably, the front end of the main body is provided with a display operation panel for control, which includes a temperature display screen for displaying temperature, a temperature adjustment button for adjusting temperature, and a freezer switch and a refrigerator switch for setting the refrigerator's operating mode.

[0009] Preferably, a sealing strip is provided on the lower side of the door, and when the door is closed, the sealing strip surrounds the outside of the storage room opening; the plug-in battery is installed on the front side of the storage room with the installation opening facing upwards, and after the door is closed, the plug-in battery is located below the door.

[0010] Preferably, the control board includes a display controller for controlling and driving the temperature display screen, and a temperature sensor is provided at the bottom of the storage compartment. The temperature sensor, semiconductor chip, semiconductor cooling fan and compressor are all connected to the control board.

[0011] Preferably, the front end of the door is provided with a door latch, the storage room is provided with a light, the front and rear sides of the main body are respectively provided with handles, and the front side of the main body is also provided with a power input port and a solar charging port.

[0012] Preferably, a control method for a portable vehicle refrigerator with a dual refrigeration system includes the following steps: S1. Briefly press the freezer or refrigerator power button to turn on the refrigerator. S2. When an external power source is connected, the refrigerator will start charging by plugging and unplugging the battery and will operate using the external power source; otherwise, it will operate using the plugged and unplugged battery. S3. When the freezer switch is pressed, if an external power source is connected, the compressor assembly and the semiconductor refrigeration assembly will start simultaneously to cool the storage compartment; otherwise, only the compressor assembly will start, and the semiconductor refrigeration assembly will remain off. S3. When the refrigerator start button is pressed, the semiconductor refrigeration unit is activated, while the compressor unit remains off; S4. Briefly press the temperature adjustment button to adjust the refrigerator's target temperature. The temperature sensor monitors the current temperature in real time during operation. S5. When the door is opened, the lights are turned on; when the door is closed, the lights are turned off simultaneously. S6. During startup, briefly press the freezer or refrigerator switch to turn off the refrigerator. In the off state, the refrigerator load stops running, and the lights and display control panel remain off.

[0013] The beneficial effects of the present invention after adopting the above structure are: This application features three operating modes, allowing for switching between modes based on refrigeration needs. With an external power source connected, a short press of the freezer switch activates full-power refrigeration, with both sets of different refrigeration components starting simultaneously for rapid cooling. With an external power source connected, a short press of the refrigerator switch activates only semiconductor refrigeration for gentle cooling with low noise during operation. Without an external power source connected, pressing the freezer switch activates only compressor refrigeration for rapid cooling, meeting users' rapid freezing requirements. In the absence of an external power source, battery power is used to maintain normal operation. This multi-mode design maximizes the advantages of both refrigeration methods while mitigating their respective drawbacks, achieving complementarity between the two components and resulting in highly flexible equipment.

[0014] This application adopts a dual-cooling structure, which significantly improves cooling efficiency compared to existing equipment when two cooling systems are activated simultaneously. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the invention after the lid is opened; Figure 2 This is a schematic diagram of the control connection in this invention; Figure 3 This is a top view of the invention when the lid is opened; Figure 4 yes Figure 3 Enlarged view of section A in the middle; Figure 5 This is a cross-sectional view of the present invention; Figure 6 This is a schematic diagram of the freezing control method in this invention; Figure 7 This is a schematic diagram of the refrigeration control method in this invention; Figure 8 This is a schematic diagram of the control circuit connection method of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Main body; 2. Storage compartment; 3. Lighting; 4. Removable battery; 5. Display and control panel; 501. Temperature display screen; 502. Temperature adjustment button; 503. Freezer switch; 504. Refrigerator switch; 6. Sealing strip; 7. Door latch; 8. Handle; 9. Refrigeration compartment; 10. Power input port; 11. Solar charging port; 12. Evaporator; 13. Semiconductor chip; 14. Semiconductor cooling fan; 15. Compressor; 16. Condenser; 17. Condenser cooling fan; 18. Temperature sensor; 19. Display controller. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] See Figures 1-8 As shown, it includes a main body 1, a storage chamber 2 inside the main body 1, a door that is rotatably installed on the top of the main body 1, a pluggable battery 4 installed inside the main body 1, a compressor assembly and a semiconductor refrigeration assembly inside the main body 1, both of which are used to refrigerate the storage chamber 2, and a control board inside the main body 1. The main body 1 is equipped with a refrigeration chamber 9, and the compressor assembly and the semiconductor refrigeration assembly are both located inside the refrigeration chamber 9; The compressor assembly includes a compressor 15 located inside the refrigeration compartment 9. The outlet of the compressor 15 is connected to a condenser 16, and then to a dryer filter and a capillary tube, before being connected to an evaporator 12 located outside the storage compartment 2. The rear end of the evaporator 12 is connected to the inlet of the compressor 15. The condenser 16 is equipped with a condenser cooling fan 17. The compressor circulation pipeline structure and its working principle diagram are common designs, so they are omitted in the attached drawings. The high-pressure refrigerant compressed by the compressor 15 is released through the capillary tube, evaporates and absorbs heat in the evaporator 12, and then is sent back to the compressor 15. The semiconductor cooling assembly includes a semiconductor chip 13 disposed in the cooling chamber 9. The cooling surface of the semiconductor chip 13 is connected to the storage chamber 2 through a heat-conducting component. A semiconductor cooling fan 14 is provided outside the semiconductor chip 13. The front top of the main body 1 is provided with a display operation panel 5 for control. The display operation panel 5 is provided with a temperature display screen 501 for displaying temperature, a temperature adjustment button 502 for adjusting temperature, and a freezer switch 503 and a refrigerator switch 504 for setting the refrigerator operation mode. A sealing strip 6 is provided on the lower side of the door. When the door is closed, the sealing strip 6 surrounds the outside of the opening of the storage room 2 to prevent cold air from leaking out of the storage room 2. The plug-in battery 4 is installed on the front side of the storage room 2 with the installation opening facing upward. After the door is closed, the plug-in battery 4 is located below the door, so that the battery is protected by the door after installation to prevent the safety hazards of direct contact between the battery and the outside. The control board includes a display controller 19 for controlling and driving the temperature display screen 501. A temperature sensor 18 is provided at the bottom of the storage compartment 2. The temperature sensor 18, semiconductor chip 13, semiconductor cooling fan 14 and compressor 15 are all connected to the control board. The temperature sensor 18 facilitates temperature monitoring. The display controller 19 controls the opening and closing of the semiconductor and compressor cooling according to the operating mode and the set temperature. The front of the door is equipped with a door latch 7, the storage compartment 2 is equipped with a light 3, and the front and rear sides of the main body 1 are equipped with handles 8 for easy access to the refrigerator. The handles 8 can also be connected to a shoulder strap for easy carrying. The front of the main body 1 is also equipped with a power input port 10 and a solar charging port 11 for easy connection to the mains power for charging or use. It can also be connected to an external solar panel for charging and operation. The solar panel uses a DC port, and the power input port 10 is a three-pin socket. A control method for a portable vehicle-mounted refrigerator with a dual refrigeration system includes the following steps: S1. Briefly press the freezer switch 503 or the refrigerator switch 504 to turn on the refrigerator. S2. When connected to an external power source, i.e., when connected to mains power or solar power, plugging and unplugging battery 4 will start charging and the refrigerator will use the external power source to operate. Otherwise, plugging and unplugging battery 4 will provide power. S3. When the freezer switch 503 is pressed, if an external power source is connected, the compressor assembly and the semiconductor refrigeration assembly will start simultaneously to cool the storage compartment 2; otherwise, only the compressor assembly will start and the semiconductor refrigeration assembly will remain off. S3. When the refrigerator switch 504 is pressed, the semiconductor refrigeration unit is activated, while the compressor unit remains off. S4. Briefly press the temperature adjustment button 502 to enter the temperature adjustment mode. There are two buttons to adjust the target temperature of the refrigerator, namely "+" and "-". At this time, the temperature display screen 501 displays the preset temperature. After no operation within 3 seconds, the temperature adjustment mode will automatically exit. The adjustment range of the freezing mode is -20~20℃, and the refrigeration mode is 5~15℃. The temperature sensor 18 monitors the current temperature in real time during operation and displays it in real time on the temperature display screen 501. S5. When the door is opened, the lighting 3 is turned on; when the door is closed, the lighting 3 is turned off simultaneously. S6. During the power-on process, briefly press the freezer switch 503 or the refrigerator switch 504 to turn off the refrigerator. In the off state, the refrigerator load stops running, and the light 3 and the display control panel 5 remain off. The installation, connection, or setting methods of the components not detailed above are all common mechanical methods, and the specific structure, model, and coefficient indicators of all their components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be elaborated further.

[0019] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A portable vehicle refrigerator equipped with a dual refrigeration system, characterized in that: It includes a main body (1), a storage room (2) inside the main body (1), a door that is rotatably installed on the top of the main body (1), a pluggable battery (4) inside the main body (1), a compressor assembly and a semiconductor refrigeration assembly inside the main body (1), both of which are used to refrigerate the storage room (2), and a control board inside the main body (1).

2. A portable vehicle refrigerator with a dual refrigeration system according to claim 1, characterized in that: The main body (1) is provided with a refrigeration chamber (9), and the compressor assembly and the semiconductor refrigeration assembly are both located in the refrigeration chamber (9).

3. A portable vehicle refrigerator with a dual refrigeration system according to claim 2, characterized in that: The compressor assembly includes a compressor (15) located in the refrigeration compartment (9). The outlet of the compressor (15) is connected to the condenser (16), and then connected to the dryer filter and capillary tube, and then connected to the evaporator (12) located outside the storage compartment (2). The rear end of the evaporator (12) is connected to the inlet of the compressor (15), and the condenser (16) is provided with a condenser cooling fan (17).

4. A portable vehicle refrigerator with a dual refrigeration system according to claim 3, characterized in that: The semiconductor cooling assembly includes a semiconductor chip (13) disposed in the cooling chamber (9). The cooling surface of the semiconductor chip (13) is connected to the storage chamber (2) through a heat-conducting component. A semiconductor cooling fan (14) is provided outside the semiconductor chip (13).

5. A portable vehicle refrigerator with a dual refrigeration system according to claim 4, characterized in that: The main body (1) has a display operation panel (5) for control at the top front end. The display operation panel (5) has a temperature display screen (501) for displaying temperature, a temperature adjustment button (502) for adjusting temperature, and a freezer switch (503) and a refrigerator switch (504) for setting the refrigerator's operating mode.

6. A portable vehicle refrigerator with a dual refrigeration system according to claim 1, characterized in that: A sealing strip (6) is provided on the lower side of the door. When the door is closed, the sealing strip (6) surrounds the outside of the opening of the storage room (2). The plug-in battery (4) is installed on the front side of the storage room (2) with the installation opening facing upward. After the door is closed, the plug-in battery (4) is located below the door.

7. A portable vehicle refrigerator with a dual refrigeration system according to claim 5, characterized in that: The control board includes a display controller (19) for controlling and driving the temperature display screen (501). A temperature sensor (18) is provided at the bottom of the storage chamber (2). The temperature sensor (18), semiconductor chip (13), semiconductor cooling fan (14) and compressor (15) are all connected to the control board.

8. A portable vehicle refrigerator with a dual refrigeration system according to claim 1, characterized in that: The front end of the door is provided with a door latch (7), the storage room (2) is provided with a light (3), the front and rear sides of the main body (1) are respectively provided with handles (8), and the front side of the main body (1) is also provided with a power input port (10) and a solar charging port (11).

9. A control method for a portable vehicle-mounted refrigerator with a dual refrigeration system according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Briefly press the freezer switch (503) or refrigerator switch (504) to turn on the refrigerator; S2. When an external power source is connected, the refrigerator starts charging by plugging and unplugging the battery (4) and then using the external power source to operate; otherwise, it uses the battery (4) to operate. S3. When the freezer switch (503) is pressed, if an external power source is connected, the compressor assembly and the semiconductor refrigeration assembly will start simultaneously to refrigerate the storage compartment (2); otherwise, only the compressor assembly will start and the semiconductor refrigeration assembly will remain off. S3. When the refrigerator on / off switch (504) is pressed, the semiconductor refrigeration unit is activated, while the compressor unit remains off; S4. Briefly press the temperature adjustment button (502) to adjust the target temperature of the refrigerator. The temperature sensor (18) monitors the current temperature in real time during operation. S5. When the door is opened, the lighting (3) is turned on, and when the door is closed, the lighting (3) is turned off simultaneously. S6. During the power-on process, press the freezer switch (503) or refrigerator switch (504) briefly to turn off the refrigerator. When the refrigerator is off, the load stops running and the lights (3) and the display control panel (5) remain off.

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