Thermal insulation test device for refrigerator car

Abstract

The utility model discloses a refrigerator car heat insulation test device, which relates to the technical field of refrigerator car carriage heat insulation tests and comprises a cylinder, an air blowing component arranged in the cylinder, a heater fixedly connected to one end of the cylinder, a resistance wire arranged in the heater, and a fixed cover fixedly connected to the outer wall of one side of the heater. A fixing pipe is fixedly connected to the circumferential outer wall of the fixing cover, an air outlet pipe is inserted into the top of the fixing pipe, and a reversing assembly used for adjusting the air outlet direction of the air outlet pipe is arranged above the heater. According to the utility model, the air outlet pipe which exhausts air in a fixed direction originally can do circular motion during working, so that the air exhaust area of the whole device is greatly enlarged, the condition of non-uniform heating in a carriage is effectively avoided, and uniform heating of each part is ensured, so that the accuracy of a detection result of the heat insulation performance of the refrigerator car is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of refrigerated truck compartment heat insulation testing technology, and in particular to a refrigerated truck heat insulation testing device. Background Technology

[0002] Refrigerated trucks, also known as insulated trucks, are enclosed vans used to maintain the temperature of frozen or fresh goods. The insulation performance of the cargo compartment is an important indicator for evaluating the performance of refrigerated trucks.

[0003] Currently, most methods for testing the thermal insulation performance of refrigerated truck compartments involve heating the interior and then using temperature sensors to monitor temperature changes both inside and outside the compartment to assess insulation performance. However, existing technologies have revealed several problems in practical operation. For example, the flexibility of current devices in adjusting the direction of hot air outlets is insufficient. In most cases, the air outlet duct is fixed, and hot air can only blow in a single direction, failing to heat the interior of the compartment comprehensively and evenly. This results in uneven heating across different parts of the compartment, affecting the accuracy of the test results. Therefore, there is an urgent need for a refrigerated truck thermal insulation testing device to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a refrigerated truck insulation performance testing device. Its advantages include: enabling the air outlet pipe, which normally exhausts air in a fixed direction, to move in a circular motion during operation, significantly expanding the exhaust area of ​​the entire device. This effectively avoids uneven heating inside the truck compartment, ensuring uniform heating of all parts and thus significantly improving the accuracy of the refrigerated truck insulation performance test results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A refrigerated truck heat insulation testing device includes a cylinder, an air blower assembly inside the cylinder, a heater fixedly connected to one end of the cylinder, and a resistance wire inside the heater;

[0007] A fixed cover is fixedly connected to one side of the outer wall of the heater, and a fixed pipe is fixedly connected to the outer circumference of the fixed cover. An air outlet pipe is inserted into the top of the fixed pipe.

[0008] A reversing assembly for adjusting the air outlet direction of the air outlet pipe is provided above the heater.

[0009] The above technical solutions ensure uniform heating of all parts inside the refrigerated truck, thereby significantly improving the accuracy of the test results for the refrigerated truck's heat insulation performance.

[0010] The present invention is further configured such that the blower assembly includes a motor fixedly connected to the inner circumference of the cylinder, a rotating column fixedly connected to the output end of the motor, a bushing fixedly connected to the outer circumference of the rotating column, and fan blades evenly distributed in a circular pattern fixedly connected to the outer circumference of the bushing.

[0011] Through the above technical solution: the bushing rotates with the rotating column, which in turn drives the fan blades to rotate and generate wind power, providing a cold air source for the heater and realizing the conversion of cold air to hot air.

[0012] The present invention is further configured such that a support base is fixedly connected to one end of the cylinder, and rollers are provided at the bottom of both the heater and the support base, and a handle is fixedly connected to one outer wall of the support base.

[0013] The above technical solutions allow staff to easily move the device to a designated location inside the refrigerated truck by pushing it with a handle, reducing the difficulty of handling and improving the efficiency of the testing work.

[0014] The present invention is further configured such that a mounting base is fixedly connected to the outer circumference of the cylinder, a wind speed sensor is fixedly connected to the top outer wall of the mounting base, and a control panel is fixedly connected to one side outer wall of the fixed cover.

[0015] Through the above technical solutions, the wind speed sensor 7 can monitor the wind speed in real time, while the control panel on one side of the fixed cover allows the staff to flexibly adjust the operating status of the device according to the detection needs and parameters such as wind speed, so as to achieve precise detection and control.

[0016] The present invention is further configured such that a fixed seat is fixedly connected to the outer circumferential wall of the motor, and the fixed seat is fixedly connected to the inner circumferential wall of the cylinder.

[0017] The above technical solution uses a fixed base to stabilize the motor, ensuring its stability during operation and preventing motor vibration from affecting the device's operation.

[0018] The present invention is further configured such that a fixing plate is fixedly connected to the inner circumferential wall of the cylinder, and the fixing plate is rotatably connected to the rotating column.

[0019] The above technical solutions can provide support for the rotating column, making it more stable during rotation and ensuring the normal operation of the blower assembly.

[0020] The present invention is further configured such that a first transmission wheel is fixedly connected to the outer circumference of the rotating column, the first transmission wheel is connected to a transmission belt, and the first transmission wheel is connected to a second transmission wheel via the transmission belt.

[0021] The above technical solution achieves power transmission by driving the second drive wheel to rotate via a transmission belt, thus providing a power source for the commutation assembly.

[0022] The present invention is further configured such that the reversing assembly includes a fixed shell fixedly connected to the outer circumferential wall of the cylinder, a reinforcing frame fixedly connected to one side of the outer wall of the fixed shell, the other end of the reinforcing frame fixedly connected to the top outer wall of the heater, a rotating rod fixedly connected to the inner circumferential wall of the second transmission wheel, a first helical gear fixedly connected to the outer circumferential wall of the rotating rod, and a second helical gear fixedly connected to the outer circumferential wall of the air outlet pipe, wherein the second helical gear meshes with the first helical gear.

[0023] Through the above technical solution: the first helical gear meshes with the second helical gear on the outer circumference of the air outlet pipe, enabling the air outlet pipe to make circular motion during exhaust, expanding the exhaust area, making the interior of the vehicle more evenly heated, and improving the accuracy of the test results.

[0024] The beneficial effects of this utility model are as follows:

[0025] This invention, through a reversing component, enables the air outlet pipe, which originally exhausts air in a fixed direction, to move in a circular motion during operation. This significantly expands the exhaust area of ​​the entire device, effectively avoiding uneven heating inside the vehicle compartment and ensuring uniform heating of all parts. This significantly improves the accuracy of the refrigerated truck's heat insulation performance test results. On the other hand, the blower component and heater work together efficiently. The motor drives the fan blades to quickly generate airflow, which, together with the resistance wire, rapidly converts cold air into hot air, quickly creating a stable simulation environment. This changes the situation of slow hot air generation and uneven heat distribution in traditional devices, greatly improving the testing efficiency.

[0026] This invention, through the support base at one end of the cylinder, the heater, and the rollers equipped at the bottom of the support base, allows workers to easily move the device to a designated location inside the refrigerated truck compartment simply by pushing the handle. This reduces the difficulty of moving the entire device, improves the efficiency of the testing work, and enhances the practicality of the device.

[0027] In this invention, a wind speed sensor installed on the outer circumference of the cylinder can detect wind speed changes in real time, while the control panel on one side of the fixed cover provides an operating interface for the staff. The operating status of the device can be flexibly adjusted according to actual testing needs and parameters such as wind speed, so as to achieve precise control of the testing process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall back structure of a refrigerated truck heat insulation testing device proposed in this utility model;

[0029] Figure 2This is a schematic diagram of the overall front structure of a refrigerated truck heat insulation testing device proposed in this utility model;

[0030] Figure 3 This is a top view schematic diagram of a refrigerated truck heat insulation testing device proposed in this utility model;

[0031] Figure 4 This is a schematic diagram of the overall semi-sectional structure of a refrigerated truck heat insulation testing device proposed in this utility model.

[0032] In the diagram: 1. Cylinder body; 2. Handle; 3. Motor; 4. Support base; 5. Fixing base; 6. Mounting base; 7. Wind speed sensor; 8. Fixing shell; 9. Heater; 10. Rotating rod; 11. First helical gear; 12. Fixing cover; 13. Fixing tube; 14. Second helical gear; 15. Air outlet duct; 16. Control panel; 17. Resistance wire; 18. Bushing; 19. Fan blade; 20. Rotating column; 21. First transmission wheel; 22. Second transmission wheel; 23. Transmission belt; 24. Fixing plate; 25. Reinforcing frame. Detailed Implementation

[0033] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0034] Reference Figures 1-4 A refrigerated truck insulation test device includes a cylinder 1, a blower assembly is installed inside the cylinder 1, a heater 9 is fixedly connected to one end of the cylinder 1, and a resistance wire 17 is installed inside the heater 9.

[0035] A fixed cover 12 is fixedly connected to one side of the outer wall of the heater 9. A fixed pipe 13 is fixedly connected to the outer circumference of the fixed cover 12. An air outlet pipe 15 is inserted into the top of the fixed pipe 13.

[0036] A reversing assembly for adjusting the air outlet direction of the air outlet duct 15 is provided above the heater 9.

[0037] In order to achieve heating treatment of the interior of the carriage, refer to Figure 4 The blower assembly includes a motor 3 fixedly connected to the inner circumference of the cylinder 1. A rotating column 20 is fixedly connected to the output end of the motor 3. A bushing 18 is fixedly connected to the outer circumference of the rotating column 20. Fan blades 19, which are evenly distributed in a circular pattern, are fixedly connected to the outer circumference of the bushing 18. The motor 3 is fixed to the inner circumference of the cylinder 1. Its output end drives the rotating column 20 to rotate. The bushing 18 rotates with the rotating column 20, which in turn drives the fan blades 19 to rotate and generate wind power, providing a cold air source for the heater 9 and realizing the conversion of cold air to hot air.

[0038] To facilitate the movement of the entire device, refer to Figure 1One end of the cylinder 1 is fixedly connected to a support base 4. Both the heater 9 and the bottom of the support base 4 are equipped with rollers. A handle 2 is fixedly connected to one side of the outer wall of the support base 4. The support base 4 at one end of the cylinder 1, as well as the heater 9 and the rollers at the bottom of the support base 4, make it convenient for staff to push the device through the handle 2. The device can be easily moved to a designated position in the refrigerated truck compartment, reducing the difficulty of handling and improving the efficiency of the testing work.

[0039] To facilitate real-time monitoring of the entire testing process, refer to Figure 1 A mounting base 6 is fixedly connected to the outer circumference of the cylinder 1. A wind speed sensor 7 is fixedly connected to the top outer wall of the mounting base 6. A control panel 16 is fixedly connected to one side outer wall of the fixed cover 12. The wind speed sensor 7 is fixed on the mounting base 6 on the outer circumference of the cylinder 1, which can monitor the wind speed in real time. At the same time, the control panel 16 on one side of the fixed cover 12 allows the staff to flexibly adjust the operating status of the device according to the detection requirements and parameters such as wind speed, so as to achieve precise detection and control.

[0040] To ensure the stability of motor 3 during operation, refer to Figure 4 A fixing seat 5 is fixedly connected to the outer circumference of the motor 3. The fixing seat 5 is fixedly connected to the inner circumference of the cylinder 1. The fixing seat 5 on the outer circumference of the motor 3 is fixed to the inner circumference of the cylinder 1, which plays a role in stabilizing the motor 3, ensuring the stability of the motor 3 during operation, and preventing the shaking of the motor 3 from affecting the operation of the device.

[0041] To ensure that the rotating column 20 stably drives the fan blade 19 to rotate together, refer to Figure 4 A fixing plate 24 is fixedly connected to the inner circumference of the cylinder 1. The fixing plate 24 is rotatably connected to the rotating column 20. By rotatably connecting the fixing plate 24 to the rotating column 20 on the inner circumference of the cylinder 1, support can be provided for the rotating column 20, making the rotating column 20 more stable during rotation and ensuring the normal operation of the blower assembly.

[0042] In order to provide a power source for the commutation components, refer to Figures 2-4 A first transmission wheel 21 is fixedly connected to the outer circumference of the rotating column 20. The first transmission wheel 21 is connected to a transmission belt 23. The first transmission wheel 21 is connected to a second transmission wheel 22 via the transmission belt 23. The first transmission wheel 21 on the outer circumference of the rotating column 20 is connected to the second transmission wheel 22 via the transmission belt 23. When the rotating column 20 rotates, it drives the first transmission wheel 21 to rotate, which in turn drives the second transmission wheel 22 to rotate via the transmission belt 23, thereby realizing power transmission and providing a power source for the reversing assembly.

[0043] To ensure more even heating inside the carriage, refer to Figures 2-4The reversing assembly includes a fixed shell 8 fixedly connected to the outer circumference of the cylinder 1. A reinforcing frame 25 is fixedly connected to one side of the outer wall of the fixed shell 8. The other end of the reinforcing frame 25 is fixedly connected to the top outer wall of the heater 9. A rotating rod 10 is fixedly connected to the inner circumference of the second transmission wheel 22. A first helical gear 11 is fixedly connected to the outer circumference of the rotating rod 10. A second helical gear 14 is fixedly connected to the outer circumference of the air outlet pipe 15. The second helical gear 14 meshes with the first helical gear 11. The rotating rod 10 rotates with the second transmission wheel 22, driving the first helical gear 11 to rotate. The first helical gear 11 meshes with the second helical gear 14 on the outer circumference of the air outlet pipe 15, so that the air outlet pipe 15 can make a circular motion when exhausting air, expanding the exhaust area, making the interior of the carriage more evenly heated, and improving the accuracy of the test results.

[0044] Working Principle: When testing the insulation performance of a refrigerated truck compartment, the device is first moved inside the compartment. Then, motor 3 and heater 9 are simultaneously started. Motor 3 drives rotating column 20, which in turn rotates bushing 18 and fan blades 19, generating airflow. This airflow, combined with the heating resistance wire 17 in heater 9, rapidly heats the cold air. The hot air is then discharged through air outlet 15 and remains inside the compartment, further heating the interior environment. Temperature sensors, placed both inside and outside the compartment, monitor the temperatures of both environments, thus enabling the testing of the refrigerated truck's insulation performance. Furthermore, during the rotation of the rotating column 20, it can drive the first transmission wheel 21 to rotate together. Simultaneously, the first transmission wheel 21 can drive the second transmission wheel 22 to rotate together via the transmission belt 23. The rotation of the second transmission wheel 22 can drive the rotating rod 10 to rotate. When the rotating rod 10 rotates, it can drive the first helical gear 11 to rotate together. At the same time, the first helical gear 11 and the second helical gear 14 mesh with each other, thereby driving the second helical gear 14 to perform circular motion. The second helical gear 14 is fixedly connected to the air outlet pipe 15, so that the air outlet pipe 15 can perform circular motion during the exhaust process, effectively expanding the exhaust area of ​​the air outlet pipe 15, making the heating inside the carriage more uniform, and improving the accuracy of the test results.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A refrigerated truck insulation testing device, comprising a cylinder (1), characterized in that, The cylinder (1) is equipped with a blower assembly inside, and a heater (9) is fixedly connected to one end of the cylinder (1). A resistance wire (17) is installed inside the heater (9). A fixed cover (12) is fixedly connected to one side of the outer wall of the heater (9), and a fixed pipe (13) is fixedly connected to the outer circumference of the fixed cover (12), and an air outlet pipe (15) is inserted into the top of the fixed pipe (13). A reversing assembly for adjusting the air outlet direction of the air outlet pipe (15) is provided above the heater (9).

2. The refrigerated truck insulation testing device according to claim 1, characterized in that, The blower assembly includes a motor (3) fixedly connected to the inner circumference of the cylinder (1), a rotating column (20) fixedly connected to the output end of the motor (3), a bushing (18) fixedly connected to the outer circumference of the rotating column (20), and fan blades (19) evenly distributed in a circular pattern fixedly connected to the outer circumference of the bushing (18).

3. The refrigerated truck insulation testing device according to claim 2, characterized in that, One end of the cylinder (1) is fixedly connected to a support base (4). Both the heater (9) and the support base (4) are provided with rollers at the bottom. A handle (2) is fixedly connected to one side of the outer wall of the support base (4).

4. The refrigerated truck insulation testing device according to claim 3, characterized in that, A mounting base (6) is fixedly connected to the outer circumference of the cylinder (1), a wind speed sensor (7) is fixedly connected to the top outer wall of the mounting base (6), and a control panel (16) is fixedly connected to one side outer wall of the fixed cover (12).

5. The refrigerated truck insulation testing device according to claim 4, characterized in that, The outer circumferential wall of the motor (3) is fixedly connected to a fixing seat (5), and the fixing seat (5) is fixedly connected to the inner circumferential wall of the cylinder (1).

6. The refrigerated truck insulation testing device according to claim 5, characterized in that, A fixing plate (24) is fixedly connected to the inner circumference of the cylinder (1), and the fixing plate (24) is rotatably connected to the rotating column (20).

7. The refrigerated truck insulation testing device according to claim 6, characterized in that, The outer circumferential wall of the rotating column (20) is fixedly connected to a first transmission wheel (21), the first transmission wheel (21) is connected to a transmission belt (23), and the first transmission wheel (21) is connected to a second transmission wheel (22) through the transmission belt (23).

8. The refrigerated truck insulation testing device according to claim 7, characterized in that, The reversing assembly includes a fixed shell (8) fixedly connected to the outer circumferential wall of the cylinder (1), a reinforcing frame (25) fixedly connected to one side of the outer wall of the fixed shell (8), the other end of the reinforcing frame (25) fixedly connected to the top outer wall of the heater (9), a rotating rod (10) fixedly connected to the inner circumferential wall of the second transmission wheel (22), a first helical gear (11) fixedly connected to the outer circumferential wall of the rotating rod (10), and a second helical gear (14) fixedly connected to the outer circumferential wall of the air outlet pipe (15), the second helical gear (14) meshing with the first helical gear (11).

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