A cold accumulation type refrigerated transport vehicle compartment

Abstract

The application relates to the technical field of cold chain transportation equipment, and discloses a cold storage transportation compartment with cold storage, which comprises a compartment body, a plurality of cold strips for cold storage are arranged on the inner top of the compartment body, temperature insulation strips for preventing cold loss of the cold strips are fixedly connected to the outer side of the cold strips, cold pipes are fixedly arranged at the bottom ends of the temperature insulation strips, the number of the cold pipes is not less than two and the cold pipes are arranged at equal intervals, and a temperature insulation plate matched with the compartment body is arranged in the compartment body. The compartment body is divided into a plurality of independent temperature zones through cooperation of the temperature insulation plates, the temperature of each temperature zone is always kept within a proper range in the transportation process through cooperation of the fan of the refrigerating unit, the cold strip with only one phase change material, the electromagnetic valve, the temperature sensor and the cold pipes, the temperature zones are continuously and conveniently separated, and the phase change material does not need to be frequently replaced when the temperature of the temperature zones needs to be changed.

Description

Technical Field

[0001] This invention relates to the field of cold chain transportation equipment technology, specifically a cold storage refrigerated transport vehicle. Background Technology

[0002] A refrigerated truck with cold storage is a closed-type van used for transporting frozen or fresh goods, and is an important part of cold chain transportation. The refrigerated compartment of a refrigerated truck with cold storage typically employs cold storage technology, meaning the refrigeration unit and the cold storage mechanism are separate. The refrigeration unit installed in the compartment charges the cold storage mechanism during off-peak electricity hours at night, or a charging station charges the cold storage mechanism inside the compartment. The cold storage mechanism utilizes phase change materials with high latent heat properties, which are placed inside the refrigeration bars. After charging is complete, the refrigeration bars output cold energy to maintain the low-temperature environment inside the closed compartment.

[0003] However, the existing cold storage mechanisms in refrigerated trucks rely solely on heat transfer to release cold energy. As the cold energy is released, the cold energy of the refrigeration strips themselves gradually decreases, reducing the efficiency of cold energy release and causing the temperature inside the truck to rise. This can easily lead to a gradient distribution of the temperature inside the truck centered on the refrigeration strips, which does not match the temperature requirements of the goods and affects the refrigeration effect. Furthermore, moisture inside the truck can easily condense on the outside of the refrigeration strips, forming a frost layer. If the frost layer is not removed in time or if there is a lot of moisture inside the truck, it can easily cover the surface of the refrigeration strips. Since the thermal conductivity of the frost layer is lower than that of the refrigeration strips, it will inhibit the output of cold energy from the refrigeration strips into the truck, thereby increasing the temperature fluctuation inside the truck and hindering the refrigerated transport of goods. Summary of the Invention

[0004] In view of the shortcomings of existing cold storage refrigerated trucks mentioned in the background art, the present invention provides a cold storage refrigerated transport truck with the advantages of small temperature fluctuations and flexible temperature zoning, thus solving the technical problems mentioned in the background art.

[0005] The present invention provides the following technical solution: a cold storage refrigerated transport compartment, comprising a compartment body, wherein a plurality of cold strips for cold storage are provided on the top side of the compartment body, and a heat insulation strip for preventing the cold energy of the cold strips is fixedly connected to the outside of the cold strips, and a cold conveying pipe is fixedly provided at the bottom end of the heat insulation strip, wherein the number of cold conveying pipes is not less than two and they are arranged at equal intervals.

[0006] The compartment is equipped with insulation panels that are compatible with the compartment. There are no fewer than two insulation panels, and the insulation panels are arranged in pairs. The outer side of the insulation panel is equipped with a matching air seal. Both sides of the insulation panel are fixedly equipped with an air supply mechanism that matches the air seal.

[0007] Preferably, a circulation pipe corresponding to the position of the cooling pipe is fixedly installed at the bottom of the inner side of the compartment. The number of circulation pipes is adapted to the number of cooling pipes. A matching solenoid valve is installed on the cooling pipe, and a temperature sensor is installed inside the circulation pipe.

[0008] Preferably, the insulation board includes a partition body and a connecting part, the connecting part being located on one side of the partition body, making the insulation board "L" shaped.

[0009] Preferably, the partition body has a fixing groove adapted to the connecting part on the side near the connecting part. The inflation seal includes a first seal and a second seal. Both the first seal and the second seal are connected to the gas supply mechanism through a connecting pipe. A section of the first seal and the second seal are located on the inner walls of the two sides of the fixing groove, and the sections located in the fixing groove are symmetrically arranged about the central axis of the fixing groove.

[0010] Preferably, the gas delivery mechanism includes a fixed plate, and a sliding cavity is formed in the fixed plate near the top. The sliding cavity is connected to the first seal and the second seal through a connecting pipe. A suitable sliding plug is slidably arranged in the sliding cavity. A connecting plate is fixedly connected to the bottom end of the sliding plug. A suitable lead screw is threaded onto the connecting plate. A rotating handle is fixedly connected to the bottom end of the lead screw.

[0011] Preferably, the air compression in the sliding chamber of the gas delivery mechanism is adapted to the amount of gas required for the expansion of the inflation seal, and the sliding plug can be configured as an elastic piston.

[0012] Preferably, two spacers that cooperate with the cold strip are fixedly provided on the inner side of the insulation strip, and one end of the spacers has a through groove with the insulation strip.

[0013] The present invention has the following beneficial effects:

[0014] 1. This invention uses two pairs of insulation panels to divide the space inside the compartment into the required temperature zones. The cooling capacity of each temperature zone is provided by the cooling strips of the lowest-temperature zone. The insulation strips prevent the transfer of cooling capacity from the cooling strips. In conjunction with a fan, temperature sensors for the corresponding temperature zones, solenoid valves, and cooling pipes, the input of cooling capacity is controlled, so that the temperature inside the compartment is always maintained within a suitable range during cargo transportation. The insulation panels can be set at the corresponding temperature zone separation positions as needed. The separation of several temperature zones is flexible and continuous, and the cooling capacity of each temperature zone is provided by a single type of cold storage material. The temperature of each zone is independently controlled, eliminating the need to change the cold storage material according to the temperature requirements of the cargo, thus improving the convenience of partitioning. At the same time, the insulation strips solve the problem of frost condensation covering the surface of the cooling strips in traditional cold storage refrigerated compartments, which hinders the transfer of cooling capacity.

[0015] 2. This invention uses a combination of two insulation panels, with the inflatable sealing strip and the connecting part of the insulation panel cooperating with the fixing groove of the corresponding insulation panel, to fix and seal the insulation panels together and between the insulation panels and the compartment body. This improves the convenience of setting up and disassembling the insulation panels. At the same time, the connecting part of the insulation panels increases the stability of the insulation panels. When the refrigerated transport vehicle starts and stops, it avoids the insulation panels from tilting in the forward direction of the refrigerated transport vehicle due to uneven pressure from the cargo, thus improving the reliability of the insulation panels. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0018] Figure 3 For the present invention Figure 1 A partial structural diagram;

[0019] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the image;

[0020] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B in the image;

[0021] Figure 6 For the present invention Figure 3 Schematic diagram of the double insulation plate combination structure;

[0022] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the top structure of the double insulation board combination at point C;

[0023] Figure 8 For the present invention Figure 6 Schematic diagram of the bottom structure of the double insulation plate combination;

[0024] Figure 9 This is a schematic diagram of the insulation board structure of the present invention;

[0025] Figure 10 For the present invention Figure 9 A cross-sectional schematic diagram of the inflation mechanism in the middle;

[0026] Figure 11 For the present invention Figure 10 A partial structural diagram.

[0027] In the diagram: 1. Body; 2. Insulation strip; 3. Insulation plate; 301. Partition body; 302. Connecting part; 4. Cooling pipe; 5. Gas supply mechanism; 501. Fixing plate; 502. Sliding cavity; 503. Sliding plug; 504. Connecting plate; 505. Screw; 506. Rotary handle; 6. Circulation pipe; 7. Inflation seal; 701. No. 1 seal; 702. No. 2 seal; 8. Partition; 9. Cooling strip; 10. Solenoid valve; 11. Fixing groove; 12. Connecting pipe. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-5 A cold storage refrigerated transport compartment includes a compartment body 1. Several cold bars 9 for cold storage are installed on the top inner side of the compartment body 1. Cold bars 9 are equipped with cold charging pipes for charging. A phase change material, i.e., a cold storage agent, is filled between the cold charging pipes and the cold bars 9. The cold charging pipes are connected to a refrigeration unit. The refrigeration unit uses the cold charging agent to circulate in the cold charging pipes. The cold energy of the cold charging agent is transferred to the phase change material, so that the temperature of the phase change material reaches the phase change temperature to complete the charging. A heat insulation strip 2 for preventing the cold energy of the cold bars 9 is fixedly connected to the outside of the cold bars 9. The heat insulation strip 2 is fixedly installed on the top inner side of the compartment body 1. A cold delivery pipe 4 is fixedly installed at the bottom end of the heat insulation strip 2. One end of the heat insulation strip 2 is connected to the output end of the fan in the refrigeration unit.

[0030] The cooling pipe 4 connects the cavity between the insulation strip 2 and the cooling strip 9 to the compartment 1, forming an airflow channel in the cavity between the insulation strip 2 and the cooling strip 9. Two partitions 8 are fixedly installed on the inner side of the insulation strip 2 to cooperate with the cooling strip 9. The top of the partition 8 is fixedly connected to the cooling strip 9. The cooling pipe 4 is located between the two partitions 8. One end of the partition 8 has a through groove with the insulation strip 2. The partition 8 separates the airflow channel, so that the airflow of the fan enters the airflow channel between the two partitions 8 after passing through the through groove from the airflow channel outside the two partitions 8. The airflow fully contacts the cooling strip 9 and then enters the compartment 1 through the cooling pipe 4. A circulation pipe 6 corresponding to the position of the cooling pipe 4 is fixedly installed at the bottom of the inner side of the compartment 1. The circulation pipe 6 connects the input end of the fan to the compartment 1. A temperature sensor is installed in the circulation pipe 6.

[0031] One function of the insulation strip 2 is to maintain the cooling capacity of the cold strip 9. The temperature sensor measures the temperature inside the compartment 1. When the actual temperature of the compartment 1 reaches the set value required by the cargo temperature, the fan is started. The airflow carries the cooling capacity from the cooling pipe 4 into the compartment 1 and brings the air inside the compartment 1 into the fan input end through the circulation pipe 6, completing the closed circulation of the airflow. This controls the temperature inside the compartment 1 within the set range to meet the temperature requirements of the cargo. Another function of the insulation strip 2 is that the frost layer formed on the surface of the insulation strip 2 will not affect the airflow output of the cooling pipe 4, thus avoiding the influence of the frost layer on the cooling capacity transfer of the cold strip 9. The cooling pipe 4 is equipped with a matching solenoid valve 10. After the temperature reaches the set value, the cooling pipe 4 is closed to prevent the temperature inside the compartment 1 from becoming "too cold" and exceeding the temperature requirements of the cargo.

[0032] See Figure 1 , Figure 2 , Figure 6 The number of cold transfer pipes 4 is no less than two and they are arranged at equal intervals. The number of circulation pipes 6 is adapted to the number of cold transfer pipes 4. The compartment 1 is equipped with insulation plates 3 that are compatible with the compartment 1. The number of insulation plates 3 is no less than two and they are arranged in pairs. The outer side of the insulation plate 3 is equipped with a matching air-filled seal 7. Both sides of the insulation plate 3 are fixedly equipped with an air-transfer mechanism 5 that is compatible with the air-filled seal 7. The insulation plates 3 are arranged in pairs to divide the space inside the compartment 1. The cold storage temperature of the cold strip 9 meets the temperature requirements of the goods in the lowest temperature zone. The divided space Each compartment has at least one corresponding cooling pipe 4 and a circulation pipe 6. The circulation pipes 6 are not interconnected. The insulation plate 3 works in conjunction with the inflation seal 7. The inflation seal 7 is inflated by the air supply mechanism 5 to fill the gaps between the insulation plates 3 and between the insulation plate 3 and the compartment 1, thus preventing temperature exchange between the separated spaces. At the same time, the output of the cooling pipe 4 is controlled by the solenoid valve 10 according to the temperature of the corresponding separated compartment 1 space. The temperature of the separated space can be adjusted independently. The position of the insulation plate 3 can be set as needed, and the position adjustment is continuous and flexible.

[0033] See Figure 1 , Figure 3 , Figures 6-9The insulation plates 3 are assembled as follows: the insulation plate 3 includes a partition body 301 and a connecting part 302. The connecting part 302 is located on one side of the partition body 301, making the insulation plate 3 "L" shaped. During the transportation of goods, when the refrigerated transport vehicle brakes or starts, the insulation plate 3 is easily subjected to uneven pressure from the goods, causing the insulation plate 3 to tend to rotate around its top or bottom. The connecting part 302 increases the thickness of a part of the insulation plate 3, preventing the insulation plate 3 from tilting in the forward direction of the refrigerated transport vehicle due to torque, thus increasing the stability of the insulation plate 3. The partition body 301 has a fixing groove 11 that is adapted to the connecting part 302 on the side near the connecting part 302. The inflation seal 7 includes a first seal 701 and a second seal 702. Both the first seal 701 and the second seal 702 are connected to the gas supply mechanism 5 through the connecting pipe 12.

[0034] See Figure 1 , Figure 3 , Figure 10 , Figure 11 The gas delivery mechanism 5 includes a fixed plate 501. A sliding cavity 502 is formed near the top of the fixed plate 501. The sliding cavity 502 is connected to the first seal 701 and the second seal 702 via a connecting pipe 12. A suitable sliding plug 503 is slidably disposed within the sliding cavity 502. A connecting plate 504 is fixedly connected to the bottom end of the sliding plug 503. A suitable lead screw 505 is threaded onto the connecting plate 504. The connecting plate 504 is slidably disposed within the fixed plate 501 and can slide relative to the fixed plate 501, but cannot rotate relative to it. A rotating handle 506 is fixedly connected to the bottom end of the lead screw 505. The rotating handle 506 is located on the fixed plate 501. The outer side of 01 is rotatably connected to the fixed plate 501. The rotating handle 506 drives the lead screw 505 to rotate, and the lead screw 505 drives the connecting plate 504 to move, thereby driving the sliding plug 503 to slide in the sliding cavity 502, pressing the air in the sliding cavity 502 into the inflation seal 7. The amount of air compression in a single sliding cavity 502 is adapted to the amount of gas required for the inflation seal 7 to expand. The sliding plug 503 can be set as an elastic piston, such as a spring piston. When the box 1 vibrates, the size of the sliding cavity 502 is changed, so as to maintain the inflation pressure of the inflation seal 7 while reducing the inflation pressure in the inflation seal 7 that may be too high or too low due to vibration.

[0035] See Figure 1 , Figures 6-8When the connecting part 302 is embedded in the fixing groove 11 of the matching partition body 301, the first seal 701 and part of the second seal 702 cooperate with the corresponding connecting part 302 to form a complete inflatable seal 7. At the same time, a section of each of the first seal 701 and the second seal 702 is located in the fixing groove 11, and the sections located in the fixing groove 11 are symmetrically arranged about the central axis of the fixing groove 11. After the insulation plates 3 are assembled, the parts of the first seal 701 and the second seal 702 located in the fixing groove 11 expand and squeeze the corresponding connecting part 302, so that the two insulation plates 3 are fixed together.

[0036] The method of using (working principle) of this invention is as follows:

[0037] Based on the required number of temperature zones, after the goods in the corresponding temperature zones are transferred, the two insulation plates 3 are moved to the corresponding separation positions. The sliding chambers 502 of the two air supply mechanisms 5 corresponding to the insulation plates 3 remain in their initial state. The handle 506 located on the inner side of the air supply mechanism 5 can be adjusted to adjust or compensate for the initial pressure of the initial inflation seal 7. The connecting parts 302 of the two insulation plates 3 are respectively embedded into the corresponding fixing grooves 11. The handle 506 is rotated to inflate the inflation seal 7, completing the fixation and sealing between the two insulation plates 3 and between the insulation plates 3 and the compartment 1, thus completing the separation of the temperature zones. Then, the required temperature zones are set in sequence. The temperature of each temperature zone is determined by the airflow of the fan driving the cold air of the cold strip 9 into the temperature zone from the corresponding cold supply pipe 4, and cooperating with the circulation pipe 6 to complete the airflow circulation. The opening and closing of the corresponding temperature zone solenoid valve 10 is controlled by the temperature sensor to stabilize the temperature within the required range.

Claims

1. A refrigerated transport compartment for cold storage, comprising a compartment body (1), wherein a plurality of cold strips (9) for cold storage are provided on the inner top of the compartment body (1), characterized in that: A heat insulation strip (2) is fixedly connected to the outside of the cold strip (9) to prevent the cold strip (9) from losing its cold energy. A cold transmission pipe (4) is fixedly installed at the bottom end of the heat insulation strip (2). The number of cold transmission pipes (4) is not less than two and they are arranged at equal intervals. The cold strip (9) is equipped with a cold charging pipe for charging, and the space between the cold charging pipe and the cold strip (9) is filled with phase change material. The insulation strip (2) is fixedly installed on the top of the inner side of the compartment (1), and one end of the insulation strip (2) is connected to the fan output end in the refrigeration unit. The cooling pipe (4) connects the cavity between the insulation strip (2) and the cold strip (9) to the compartment (1), forming an airflow channel in the cavity between the insulation strip (2) and the cold strip (9). Two partitions (8) that cooperate with the cold strip (9) are fixedly installed on the inner side of the insulation strip (2). The top of the partition (8) is fixedly connected to the cold strip (9). The cooling pipe (4) is located between the two partitions (8). One end of the partition (8) has a through groove with the insulation strip (2). The partition (8) separates the airflow channel, so that the airflow of the fan enters the airflow channel between the two partitions (8) after passing through the through groove in the airflow channel outside the two partitions (8). The airflow fully contacts the cold strip (9) and then enters the compartment (1) through the cooling pipe (4). A circulation pipe (6) corresponding to the position of the cooling pipe (4) is fixedly installed at the bottom of the inner side of the compartment (1). The circulation pipe (6) connects the input end of the fan to the compartment (1). The compartment (1) is provided with a heat insulation board (3) adapted to the compartment (1). The number of heat insulation boards (3) is not less than two and the heat insulation boards (3) are arranged in pairs. The outer side of the heat insulation board (3) is provided with a matching air sealing strip (7). Both sides of the heat insulation board (3) are fixedly provided with an air supply mechanism (5) that matches the air sealing strip (7).

2. The refrigerated transport vehicle with cold storage as described in claim 1, characterized in that: The number of circulation pipes (6) is adapted to the number of cooling pipes (4). A suitable solenoid valve (10) is provided on the cooling pipe (4), and a temperature sensor is provided inside the circulation pipe (6).

3. A refrigerated transport vehicle with cold storage as described in claim 1, characterized in that: The insulation board (3) includes a partition body (301) and a connecting part (302). The connecting part (302) is located on one side of the partition body (301), making the insulation board (3) "L" shaped.

4. A refrigerated transport vehicle with cold storage as described in claim 3, characterized in that: The partition body (301) has a fixing groove (11) adapted to the connecting part (302) on one side near the connecting part (302). The inflation seal (7) includes a first seal (701) and a second seal (702). Both the first seal (701) and the second seal (702) are connected to the gas supply mechanism (5) through the connecting pipe (12). Each of the first seal (701) and the second seal (702) has a section located in the fixing groove (11), and the section located in the fixing groove (11) is symmetrical about the central axis of the fixing groove (11).

5. A refrigerated transport vehicle with cold storage as described in claim 1, characterized in that: The gas delivery mechanism (5) includes a fixed plate (501), and a sliding cavity (502) is provided in the fixed plate (501) near the top. The sliding cavity (502) is connected to the first seal (701) and the second seal (702) through a connecting pipe (12). A suitable sliding plug (503) is slidably arranged in the sliding cavity (502). A connecting plate (504) is fixedly connected to the bottom end of the sliding plug (503). A suitable lead screw (505) is threaded onto the connecting plate (504). A rotating handle (506) is fixedly connected to the bottom end of the lead screw (505).

6. A refrigerated transport vehicle with cold storage as described in claim 5, characterized in that: The amount of air compression in the sliding chamber (502) of the gas delivery mechanism (5) is adapted to the amount of gas required for the expansion of the inflation seal (7), and the sliding plug (503) is configured as an elastic piston.

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