Internal air circulation system of a refrigerated compartment

Abstract

The utility model relates to the technical field of air circulation in refrigerated compartments, and discloses an air circulation system inside a refrigerated compartment, including a compartment body, a refrigeration box and a second box door, wherein the second box door is arranged at the center of the rear end face of the compartment body, the refrigeration box is arranged at the upper part of the front end face of the compartment body, a second partition is arranged at the front part of the interior of the compartment body, a ventilation fan is arranged at the upper part of one side of the front inner wall of the compartment body, and an acceleration structure is arranged at the upper part of the center of the rear end face of the second partition. In the utility model, four limiting structures are used to facilitate the limiting and fixing of two frames, and it is also convenient to disassemble the two frames, replace and maintain bamboo charcoal, and then adjust the humidity inside the compartment body through the humidity regulating structure. Finally, the acceleration structure is used to increase the flow of cool air inside the compartment body, so that the temperature inside the entire compartment body is more uniform and stable, achieving a rapid cooling effect and saving energy at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerated compartment air circulation, in particular to an internal air circulation system of a refrigerated compartment. Background Art

[0002] A refrigerated compartment is a vehicle specially designed for transporting goods that need to be kept at low temperatures. These goods may include food, medicines, chemicals and other items that are easily affected by temperature. Refrigerated compartments are usually equipped with special refrigeration equipment to ensure that the goods are kept within the appropriate temperature range during the entire transportation process to maintain their quality and safety. Refrigerated compartments are usually equipped with an air circulation system, whose function is to ensure uniform circulation of air in the compartment and stability of temperature to keep the goods refrigerated.

[0003] During the use of the existing refrigerated compartment air circulation system, the internal circulation can reduce the loss of cool air and reduce the load. In order to reduce the odor inside the compartment, bamboo charcoal is used for filtering. After long-term use, the bamboo charcoal is not convenient to replace and clean. Therefore, those skilled in the art provide a refrigerated compartment internal air circulation system to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a refrigerated compartment internal air circulation system is proposed. When the air inside the compartment body is circulated internally by opening the first electric gate valve and the ventilation fan, it is filtered through bamboo charcoal. After use, by pushing four plug-ins, the four plug-ins slide out of four slots, and two frames are pulled out, which is convenient for replacing the two bamboo charcoals. The bamboo charcoal and the frame after cleaning or replacement are stuffed into the refrigeration chassis, and the four plug-ins are pushed into the four slots by the tension of four springs to fix the two frames, which is convenient for replacing, maintaining and cleaning the bamboo charcoal.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air circulation system inside a refrigerated compartment, comprising a compartment body, a refrigeration box and a second compartment door, wherein the second compartment door is arranged at the center of the rear end face of the compartment body, the refrigeration box is arranged at the upper part of the front end face of the compartment body, a second partition is arranged at the front part of the compartment body, a ventilation fan is arranged at the upper part of one side of the front inner wall of the compartment body, an acceleration structure is arranged at the upper part of the rear end face center of the second partition, a humidity adjustment structure is arranged at the lower part of the compartment body at the front end of the second partition, an air inlet is arranged at the center of the front end face of the second partition, a condenser is arranged at the front part of the lower inner wall of the refrigeration box, a compressor is arranged at the rear end of the condenser, a first partition is arranged inside the refrigeration box at the rear end of the compressor, a third partition is arranged at the center of the rear end face of the first partition, frames are arranged on both sides of the third partition, bamboo charcoal is arranged inside the two frames, the two frames respectively penetrate the inner side wall of the refrigeration box and pass to the two side walls of the refrigeration box, and limiting structures are arranged on the outer side wall of the refrigeration box at the center of the front and rear ends of the two frames;

[0006] An evaporator is provided at the front of one side of the third partition, a fourth partition is provided at the rear end of the evaporator, a through hole is provided at the center of the front end surface of the fourth partition, and a first solenoid valve is provided at the upper part of one side of the end surface of the second partition;

[0007] Through the above technical solution, the two frames can be conveniently limited and fixed by four limiting structures, and the two frames can be disassembled and the bamboo charcoal can be replaced and maintained. The humidity inside the carriage body can be adjusted by the humidity regulating structure, and finally the flow of cool air inside the carriage body can be increased by the acceleration structure, so that the temperature inside the entire carriage body is more uniform and stable, achieving a rapid cooling effect while saving energy.

[0008] Further, the acceleration structure includes a housing, a plurality of high-speed fans and a flow channel, the flow channel is arranged at the lower front end of the housing, the front end of the flow channel passes through the housing to the rear end surface of the housing, the plurality of high-speed fans are arranged laterally at the rear end of the flow channel, the output end of the first solenoid valve passes through the front end surface of the second partition to the rear end surface of the second partition, and is located at the front end of the flow channel;

[0009] Through the above technical solution, the high-speed fan is started to blow the air at the output end of the first solenoid valve toward the interior of the carriage body, and the cool air on the outside of the evaporator enters the interior of the carriage body through the first solenoid valve and is mixed with the air inside the carriage body before being blown toward the rear end of the carriage body, thereby accelerating the mixing and circulation of the cold air with the air inside the carriage body, making the temperature in the entire carriage body more uniform and stable, helping to prevent the generation of temperature gradients, maintain the quality of the goods, and also achieve a rapid cooling effect while saving energy.

[0010] Further, the humidity adjustment structure includes a first electric gate valve, a second solenoid valve, a fifth partition, absorbent cotton, a second electric gate valve and an air inlet, wherein the first electric gate valve is arranged on the front end surface of the second partition at the front end of the air inlet, the air inlet is arranged at the lower center of the front end surface of the second partition, the second electric gate valve is arranged on the front end surface of the second partition at the front end of the air inlet, the fifth partition is arranged on the front end surface of the second partition between the first electric gate valve and the second electric gate valve, the second solenoid valve is arranged at the center of the upper end surface of the fifth partition, and the absorbent cotton is arranged at the lower end of the fifth partition;

[0011] Through the above technical scheme, by controlling the first electric gate valve and the ventilation fan to open, the air inside the car body passes through the front end of the second partition and enters the refrigeration box for circulation. If the humidity is high, by opening the second electric gate valve and the second solenoid valve, closing the first electric gate valve, the air passes through the air inlet hole and enters the front end of the second partition. After being adsorbed by the absorbent cotton, it enters the refrigeration box through the second solenoid valve, which is convenient for adjusting the humidity.

[0012] Further, the limiting structure includes a slide groove, a spring, an insert block and a slot, the slide groove is arranged on the side wall of the refrigeration box, the spring is arranged inside the slide groove near one end, the insert block is arranged on the other end of the spring, the slot is arranged on the end surface of the frame, and the insert block is slidably connected inside the slot;

[0013] Through the above technical solution, the block is pressed to slide out of the slot, the frame is pulled out to replace and clean the bamboo charcoal, and when it is inserted into the refrigeration chassis after cleaning, the block is pressed again and inserted into the frame. After reaching the position, the block is pushed into the slot through the tension of the spring to limit the frame, making it convenient to replace and clean the bamboo charcoal.

[0014] Furthermore, the output end of the ventilation fan sequentially passes through the front inner wall of the vehicle body and the rear end surface of the refrigeration box to the center of the rear inner wall of the refrigeration box near one side;

[0015] Through the above technical solution, the air inside the vehicle body is blown to the inside of the refrigeration box by the ventilation fan for circulation.

[0016] Furthermore, a first box door is provided at the lower front end of one side wall of the carriage body;

[0017] Through the above technical solution, it is convenient to open the first box door to maintain and replace the humidity regulating structure.

[0018] Furthermore, a channel is provided on a side wall of the third partition at the front end of the fourth partition;

[0019] Through the above technical solution, the circulated air flows through the channel to the outside of the evaporator for re-refrigeration.

[0020] Furthermore, a sealing gasket is provided on one end of the outer side walls of the two frames;

[0021] The above technical solution can conveniently improve the sealing between the two frames and the refrigeration cabinet.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the air circulation system inside the refrigerated compartment performs internal circulation of the air inside the compartment body by opening the first electric gate valve and the ventilation fan, and filters the air through the bamboo charcoal. After use, the four plug-ins are pushed, the four plug-ins slide out of the four slots, and the two frames are pulled out, so that the two bamboo charcoals can be replaced conveniently. The cleaned or replaced bamboo charcoal and the frame are stuffed into the refrigeration chassis, and the four plug-ins are pushed into the four slots by the tension of the four springs to fix the two frames, so that the bamboo charcoal can be replaced, maintained and cleaned conveniently.

[0024] 2. In the utility model, by controlling the first electric gate valve and the ventilation fan to open, the air inside the car body enters the refrigeration box through the front end of the second partition for circulation. If the humidity is high, by opening the second electric gate valve and the second solenoid valve, closing the first electric gate valve, the air enters the front end of the second partition through the air inlet hole, is adsorbed by the absorbent cotton, and then enters the refrigeration box through the second solenoid valve, so as to facilitate the adjustment of the humidity.

[0025] 3. In the utility model, the first solenoid valve is opened, the high-speed fan is started, and the air at the output end of the first solenoid valve is blown toward the interior of the carriage body. The cool air on the outside of the evaporator enters the interior of the carriage body through the first solenoid valve and is mixed with the air inside the carriage body before being blown toward the rear end of the carriage body. This accelerates the mixing and circulation of the cold air and the air inside the carriage body, making the temperature in the entire carriage body more uniform and stable, helping to prevent the generation of temperature gradients, maintain the quality of the goods, and also achieve a rapid cooling effect while saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of an internal air circulation system of a refrigerated compartment proposed by the utility model;

[0027] Figure 2 A side sectional view of an internal air circulation system for a refrigerated compartment proposed by the utility model;

[0028] Figure 3 A top sectional view of a refrigeration box of an internal air circulation system of a refrigerated compartment proposed by the utility model;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of center A.

[0030] Legend:

[0031] 1. Carriage body; 2. First door; 3. Refrigeration box; 4. Second door; 5. Acceleration structure; 501. Shell; 502. High-speed fan; 503. Flow channel; 6. First solenoid valve; 7. First partition; 8. Condenser; 9. Compressor; 10. Humidity adjustment structure; 1001. First electric gate valve; 1002. Second solenoid valve; 1003. Fifth partition; 1004. Water-absorbing cotton; 1005. Second electric gate valve; 1006. Air inlet; 11. Second partition; 12. Air inlet; 13. Limiting structure; 1301. Slide; 1302. Spring; 1303. Insert; 1304. Slot; 14. Channel; 15. Frame; 16. Bamboo charcoal; 17. Ventilation fan; 18. Third partition; 19. Through hole; 20. Fourth partition; 21. Evaporator. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-4The utility model provides an embodiment: an air circulation system inside a refrigerated compartment, comprising a compartment body 1, a refrigeration box 3 and a second box door 4, wherein the second box door 4 is arranged at the center of the rear end surface of the compartment body 1, the refrigeration box 3 is arranged at the upper part of the front end surface of the compartment body 1, a second partition 11 is arranged at the front part of the compartment body 1, a ventilation fan 17 is arranged at the upper part of one side of the front inner wall of the compartment body 1, an acceleration structure 5 is arranged at the upper part of the center of the rear end surface of the second partition 11, and finally the flow of cool air inside the compartment body 1 is improved by the acceleration structure 5, so that the temperature inside the entire compartment body 1 is more uniform and stable, which has the effect of rapid cooling and saves energy at the same time, a humidity adjustment structure 10 is arranged at the lower part of the compartment body 1 at the front end of the second partition 11, and then the humidity adjustment structure 10 is used to adjust the humidity of the compartment body 1. To adjust the humidity inside the carriage body 1, an air inlet 12 is provided at the center of the front end face of the second partition 11, a condenser 8 is provided at the front of the lower inner wall of the refrigeration case 3, a compressor 9 is provided at the rear end of the condenser 8, a first partition 7 is provided inside the refrigeration case 3 at the rear end of the compressor 9, a third partition 18 is provided at the center of the rear end face of the first partition 7, frames 15 are provided on both sides of the third partition 18, bamboo charcoal 16 is provided inside the two frames 15, the two frames 15 respectively penetrate the inner wall of the refrigeration case 3 to the two side walls of the refrigeration case 3, and limiting structures 13 are provided on the outer wall of the refrigeration case 3 at the center of the front and rear ends of the two frames 15. The four limiting structures 13 are convenient for limiting and fixing the two frames 15, and it is also convenient to disassemble the two frames 15 and replace and maintain the bamboo charcoal 16.

[0034] An evaporator 21 is provided at the front of one side of the third partition 18, a fourth partition 20 is provided at the rear end of the evaporator 21, a through hole 19 is provided at the center of the front end surface of the fourth partition 20, and a first solenoid valve 6 is provided at the upper part of one side of the end surface of the second partition 11.

[0035] The acceleration structure 5 includes a shell 501, a plurality of high-speed fans 502 and a flow channel 503. The flow channel 503 is arranged at the lower front end of the shell 501. The front end of the flow channel 503 passes through the shell 501 and reaches the rear end surface of the shell 501. The plurality of high-speed fans 502 are arranged laterally at the rear end of the flow channel 503. The output end of the first solenoid valve 6 passes through the front end surface of the second partition 11 and reaches the rear end surface of the second partition 11, and is located at the front end of the flow channel 503. The high-speed fan 502 is started to blow the air at the output end of the first solenoid valve 6 to the interior of the carriage body 1. The cool air on the outside of the evaporator 21 enters the interior of the carriage body 1 through the first solenoid valve 6 and is mixed with the air inside the carriage body 1 and then blown to the rear end of the carriage body 1, so as to accelerate the mixing and circulation of the cold air and the air inside the carriage body 1, so that the temperature in the entire carriage body 1 is more uniform and stable, which helps to prevent the generation of temperature gradients and maintain the quality of the goods. It can also achieve the effect of rapid cooling and save energy at the same time.

[0036] The humidity regulating structure 10 comprises a first electric gate valve 1001, a second solenoid valve 1002, a fifth partition 1003, a water-absorbing cotton 1004, a second electric gate valve 1005 and an air inlet 1006. The first electric gate valve 1001 is arranged on the front end surface of the second partition 11 at the front end of the air inlet 12. The air inlet 1006 is arranged at the lower center of the front end surface of the second partition 11. The second electric gate valve 1005 is arranged on the front end surface of the second partition 11 at the front end of the air inlet 1006. The fifth partition 1003 is arranged on the front end surface of the second partition 11 between the first electric gate valve 1001 and the second electric gate valve 1005. The second solenoid valve 1002 is arranged on the front end surface of the second partition 11 between the first electric gate valve 1001 and the second electric gate valve 1005. Valve 1002 is arranged at the center of the upper end surface of the fifth partition 1003, and absorbent cotton 1004 is arranged at the lower end of the fifth partition 1003. By controlling the first electric gate valve 1001 and the ventilation fan 17 to open, the air inside the car body 1 passes through the front end of the second partition 11 and enters the refrigeration box 3 for circulation. If the humidity is high, by opening the second electric gate valve 1005 and the second solenoid valve 1002, closing the first electric gate valve 1001, the air passes through the air inlet hole 1006 and enters the front end of the second partition 11. After being adsorbed by the absorbent cotton 1004, it enters the refrigeration box 3 through the second solenoid valve 1002, so as to facilitate the adjustment of humidity.

[0037] The limiting structure 13 includes a slide groove 1301, a spring 1302, an insert block 1303 and a slot 1304. The slide groove 1301 is arranged on the side wall of the refrigeration case 3, the spring 1302 is arranged inside the slide groove 1301 at one end, the insert block 1303 is arranged on the other end of the spring 1302, and the slot 1304 is arranged on the end surface of the frame 15. The insert block 1303 is slidably connected inside the slot 1304. By pressing the insert block 1303, the insert block 1303 slides out of the slot 1304, and the frame 15 is pulled out to replace the cleaning bamboo charcoal 16. After cleaning, when it is inserted into the refrigeration case 3, the insert block 1303 is pressed again and inserted into the frame 15. After reaching the position, the insert block 1303 is pushed into the slot 1304 by the tension of the spring 1302 to limit the frame 15, which is convenient for replacing and cleaning the bamboo charcoal 16.

[0038] The output end of the ventilation fan 17 passes through the front inner wall of the car body 1 and the rear end surface of the refrigeration box 3 in sequence to the side of the center of the rear inner wall of the refrigeration box 3. The air inside the car body 1 is blown to the inside of the refrigeration box 3 for circulation through the ventilation fan 17. A first box door 2 is provided at the lower front end of one side wall of the car body 1, which is convenient for opening the first box door 2 to maintain and replace the humidity adjustment structure 10. A channel 14 is provided on one side wall of the third partition 18 at the front end of the fourth partition 20. The circulated air flows to the outside of the evaporator 21 through the channel 14 for re-cooling. The outer walls of the two frames 15 are provided with sealing gaskets at one end to improve the sealing between the two frames 15 and the refrigeration box 3.

[0039] Working principle: When in use, by starting the evaporator 21, condenser 8 and compressor 9, the refrigerant in the evaporator 21 evaporates and absorbs the heat outside the evaporator 21 to reduce the temperature, and the first solenoid valve 6 and the high-speed fan 502 are started to blow the air at the output end of the first solenoid valve 6 to the inside of the carriage body 1. The cool wind on the outside of the evaporator 21 enters the carriage body 1 through the first solenoid valve 6 and mixes with the air inside the carriage body 1 and then blows to the rear end of the carriage body 1, which facilitates the acceleration of the mixing and circulation of the cold air and the air inside the carriage body 1, making the temperature in the entire carriage body 1 more uniform and stable, helping to prevent the generation of temperature gradients and maintain the quality of the goods. It can also achieve the effect of rapid cooling and save energy at the same time. By controlling the first electric gate valve 1001 and the ventilation fan 17 to open, the air inside the carriage body 1 passes through the second partition The front end of the plate 11 enters the interior of the refrigeration chassis 3 for circulation. If the humidity is high, by opening the second electric gate valve 1005 and the second solenoid valve 1002, closing the first electric gate valve 1001, the air enters the front end of the second partition 11 through the air inlet 1006, and is adsorbed by the absorbent cotton 1004 and then enters the refrigeration chassis 3 through the second solenoid valve 1002, so as to facilitate the adjustment of the humidity. By pressing the plug 1303, the plug 1303 slides out of the slot 1304, the frame 15 is pulled out to replace the cleaning bamboo charcoal 16, and when it is inserted into the interior of the refrigeration chassis 3 after cleaning, the plug 1303 is pressed again and inserted into the frame 15. After reaching the position, the plug 1303 is pushed into the slot 1304 by the tension of the spring 1302 to limit the frame 15, so as to facilitate the replacement and cleaning of the bamboo charcoal 16.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigerated compartment internal air circulation system, comprising a compartment body (1), a refrigeration box (3) and a second box door (4), wherein the second box door (4) is arranged at the center of the rear end surface of the compartment body (1), and the refrigeration box (3) is arranged at the upper part of the front end surface of the compartment body (1), characterized in that: A second partition (11) is provided at the front of the interior of the carriage body (1); a ventilation fan (17) is provided at the upper part of one side of the front inner wall of the carriage body (1); an acceleration structure (5) is provided at the upper center of the rear end surface of the second partition (11); a humidity adjustment structure (10) is provided at the lower part of the interior of the carriage body (1) at the front end of the second partition (11); an air inlet hole (12) is provided at the center of the front end surface of the second partition (11); a condenser (8) is provided at the front of the lower inner wall of the refrigeration box (3); and a compressor is provided at the rear end of the condenser (8). (9), a first partition (7) is provided inside the refrigeration box (3) at the rear end of the compressor (9), a third partition (18) is provided at the center of the rear end surface of the first partition (7), frames (15) are provided on both sides of the third partition (18), bamboo charcoal (16) is provided inside the two frames (15), the two frames (15) respectively penetrate the inner wall of the refrigeration box (3) and pass to the two side walls of the refrigeration box (3), and limiting structures (13) are provided on the outer wall of the refrigeration box (3) at the center of the front and rear ends of the two frames (15); An evaporator (21) is provided at the front of one side of the third partition (18), a fourth partition (20) is provided at the rear end of the evaporator (21), a through hole (19) is provided at the center of the front end surface of the fourth partition (20), and a first solenoid valve (6) is provided at the upper part of one side of the end surface of the second partition (11).

2. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: The acceleration structure (5) comprises a housing (501), a plurality of high-speed fans (502) and a flow channel (503); the flow channel (503) is arranged at the lower front end of the housing (501); the front end of the flow channel (503) passes through the housing (501) and reaches the rear end surface of the housing (501); the plurality of high-speed fans (502) are arranged in a transverse arrangement at the rear end of the flow channel (503); the output end of the first solenoid valve (6) passes through the front end surface of the second partition (11) and reaches the rear end surface of the second partition (11), and is located at the front end of the flow channel (503).

3. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: The humidity adjustment structure (10) comprises a first electric gate valve (1001), a second solenoid valve (1002), a fifth partition (1003), water-absorbing cotton (1004), a second electric gate valve (1005) and an air inlet (1006), wherein the first electric gate valve (1001) is arranged on the front end surface of the second partition (11) at the front end of the air inlet (12), and the air inlet (1006) is arranged at the lower center of the front end surface of the second partition (11). The second electric gate valve (1005) is arranged on the front end surface of the second partition (11) at the front end of the air inlet hole (1006), the fifth partition (1003) is arranged on the front end surface of the second partition (11) between the first electric gate valve (1001) and the second electric gate valve (1005), the second solenoid valve (1002) is arranged at the center of the upper end surface of the fifth partition (1003), and the absorbent cotton (1004) is arranged at the lower end of the fifth partition (1003).

4. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: The limiting structure (13) includes a slide groove (1301), a spring (1302), an insert block (1303) and a slot (1304); the slide groove (1301) is arranged on the side wall of the refrigeration box (3); the spring (1302) is arranged inside the slide groove (1301) near one end; the insert block (1303) is arranged on the other end of the spring (1302); the slot (1304) is arranged on the end surface of the frame (15); and the insert block (1303) is slidably connected inside the slot (1304).

5. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: The output end of the ventilation fan (17) sequentially passes through the front inner wall of the carriage body (1) and the rear end surface of the refrigeration box (3) and reaches a side of the center of the rear inner wall of the refrigeration box (3).

6. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: A first box door (2) is provided at the lower front end of one side wall of the carriage body (1).

7. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: A channel (14) is provided on a side wall of the third partition plate (18) at the front end of the fourth partition plate (20).

8. The refrigerated compartment internal air circulation system according to claim 1, characterized in that: The outer side walls of the two frames (15) are both provided with sealing pads near one end.

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