Equipment for detecting heat-conducting property of baking tray

Abstract

The utility model discloses baking tray heat-conducting property detection equipment which comprises a constant-temperature heating table, a heating area is arranged at the upper end of the constant-temperature heating table, a sample plate is placed at the upper end of the heating area, drill holes are formed in the outer surfaces of the upper end and the lower end of the sample plate, and a heat preservation cover is arranged on the upper portion of the constant-temperature heating table. Lifting structures are connected between the lower portions of the outer surfaces of the two sides of the heat preservation cover and the outer surfaces of the two sides of the constant-temperature heating table, each lifting structure comprises a fixing block, an air cylinder and a connecting block, an observation window is installed on the outer surface of the front end of the heat preservation cover, and the interior of a shell in the heat preservation cover is filled with heat preservation cotton. The accuracy of the detection result and the experiment efficiency are improved, the operation steps are simplified, the heat loss is reduced, and a better use prospect is brought.

Description

Technical Field

[0001] This utility model relates to the field of baking pan performance testing technology, specifically a baking pan thermal conductivity testing device. Background Technology

[0002] In the baking industry, the thermal conductivity of baking pans directly affects baking results. Baking pans with good thermal conductivity can evenly distribute heat, shorten baking time, reduce energy consumption, and improve the quality of baked goods. Therefore, testing the thermal conductivity of baking pans is of great significance for optimizing baking processes, improving production efficiency, and enhancing product quality.

[0003] Currently, existing methods for testing the thermal conductivity of baking pans typically involve preheating the oven. The specific steps include: preheating the oven to a set temperature (e.g., 180°C), ensuring the temperature stabilizes, placing the baking pan to be tested into the preheated oven, and setting the heating time (e.g., 10-15 minutes) to ensure the pan is fully heated. Then, the operator, wearing oven mitts, removes the pan and quickly uses a temperature gun to measure the surface temperature of the pan to assess its thermal conductivity.

[0004] However, existing technologies have the following drawbacks:

[0005] 1. Complex and time-consuming operation: It requires preheating the oven multiple times, placing and removing the baking tray, which is cumbersome and time-consuming.

[0006] 2. Significant heat loss: During the process of removing the baking pan for temperature measurement, heat is easily lost, leading to inaccurate measurement results.

[0007] Therefore, we propose a device for testing the thermal conductivity of baking pans. Utility Model Content

[0008] (a) Technical problems to be solved

[0009] In view of the shortcomings of the prior art, this utility model provides a baking pan thermal conductivity testing device, which can improve the accuracy of the experiment and has the advantages of simple and convenient operation, and can effectively solve the problems in the background art.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a baking pan thermal conductivity testing device, including a constant temperature heating platform, a heating zone is provided at the upper end of the constant temperature heating platform, a sample plate is placed at the upper end of the heating zone, and drill holes are opened on the outer surfaces of both the upper and lower ends of the sample plate. A heat insulation cover is provided on the upper part of the constant temperature heating platform, and a lifting structure is connected between the lower part of the outer surfaces of both sides of the heat insulation cover and the outer surfaces of both sides of the constant temperature heating platform. The lifting structure includes a fixing block, a cylinder and a connecting block. An observation window is installed on the outer surface of the front end of the heat insulation cover, and the interior of the inner shell of the heat insulation cover is filled with heat insulation cotton.

[0012] Preferably, the reinforcing support column is fixed inside the shell of the insulation cover, and the reinforcing support column penetrates the insulation cotton.

[0013] Preferably, the drilled hole is used to install a thermocouple probe.

[0014] Preferably, the lifting structure is in two sets, and the connecting block in the two sets of lifting structures is fixedly installed in the middle of the outer surface of both ends of the constant temperature heating table.

[0015] Preferably, the fixing blocks in the two sets of lifting structures are fixedly installed on the lower part of the outer surface of both ends of the heat insulation cover.

[0016] Preferably, one outer surface of the cylinder body is fixedly connected to one outer surface of the fixing block, and the lower outer surface of the piston rod in the cylinder is fixedly connected to the upper outer surface of the connecting block.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a device for testing the thermal conductivity of baking pans, which has the following beneficial effects:

[0019] 1. This baking pan thermal conductivity testing device, through the design of a constant temperature heating platform and a heat insulation cover, ensures temperature uniformity and stability during the heating process, reduces heat loss, and thus enables more accurate measurement of the baking pan's thermal conductivity. The installation of thermocouple probes and real-time monitoring of temperature differences further improve the accuracy of experimental data.

[0020] 2. This baking pan thermal conductivity testing device adopts a lifting structure and cylinder control for the lifting of the insulation cover, which facilitates quick loading and unloading of materials, reduces operation steps and time, and the design of the observation window allows for real-time monitoring of the experimental process without the need to frequently open the insulation cover, further improving experimental efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a baking pan thermal conductivity testing device according to the present invention.

[0022] Figure 2 This is a schematic diagram of the constant temperature heating stage and sample plate in a baking pan thermal conductivity testing device of this utility model.

[0023] Figure 3 This is a schematic diagram of the insulation cover and lifting structure in a baking pan thermal conductivity testing device of this utility model.

[0024] Figure 4 This is a partial side view cross-sectional view of the insulation cover of the baking pan thermal conductivity testing equipment of this utility model.

[0025] In the diagram: 1. Constant temperature heating stage; 2. Insulation cover; 3. Lifting structure; 4. Observation window; 5. Sample plate; 6. Heating zone; 7. Drill hole; 8. Fixing block; 9. Cylinder; 10. Connecting block; 11. Insulation cotton; 12. Reinforcing support column. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] This embodiment is a device for testing the thermal conductivity of baking pans.

[0028] like Figure 1-4 As shown, it includes a constant temperature heating stage 1, a heating zone 6 is provided at the upper end of the constant temperature heating stage 1, a sample plate 5 is placed at the upper end of the heating zone 6, and drill holes 7 are opened on the outer surfaces of both the upper and lower ends of the sample plate 5. A heat insulation cover 2 is provided on the upper part of the constant temperature heating stage 1. A lifting structure 3 is connected between the lower part of the outer surfaces on both sides of the heat insulation cover 2 and the outer surfaces on both sides of the constant temperature heating stage 1. The lifting structure 3 includes a fixing block 8, a cylinder 9 and a connecting block 10. An observation window 4 is installed on the outer surface of the front end of the heat insulation cover 2. The interior of the shell of the heat insulation cover 2 is filled with heat insulation cotton 11.

[0029] The reinforcing support column 12 is fixed inside the shell of the heat insulation cover 2, and the reinforcing support column 12 penetrates the heat insulation cotton 11; the drilled hole 7 is used to install the thermocouple probe; there are two sets of lifting structures 3, and the connecting block 10 in the two sets of lifting structures 3 is fixedly installed in the middle of the outer surface of both ends of the constant temperature heating table 1; the fixing block 8 in the two sets of lifting structures 3 is fixedly installed in the lower part of the outer surface of both ends of the heat insulation cover 2; one side of the outer surface of the cylinder body in the cylinder 9 is fixedly connected to one side of the outer surface of the fixing block 8, and the lower end of the outer surface of the piston rod in the cylinder 9 is fixedly connected to the upper end of the outer surface of the connecting block 10.

[0030] It should be noted that this utility model is a device for testing the thermal conductivity of a baking pan. The constant temperature heating platform 1 described in this article belongs to the prior art. It can use a continuous and stable heat source to measure the thermal conductivity (kk) according to the formula: k=(Q⋅d) / (A⋅ΔT⋅t), where k: thermal conductivity (unit: W / m·K), Q: heat transferred (unit: joule, J), d: material thickness (unit: meter, m), A: heat transfer area (unit: square meter, m²), ΔT: temperature difference between the two ends of the material (unit: Kelvin, K or degree Celsius, ℃), t: heat transfer time (unit: second, s). During the test, a ruler is used to measure the thickness (d) and heat transfer area (A) of the baking pan. The area of ​​the sample plate 5 is the same as the area of ​​the heating zone 6. The sample plate 5 is placed... Place the sample tray on a constant-temperature heating platform 1, ensuring one side is in contact with the heat source and the other side is exposed to air. Install a thermocouple on each side of the tray for temperature measurement. Drill a hole 7 in the bottom of the tray, with the hole diameter slightly smaller than the thermocouple probe diameter. Insert the thermocouple probe into the hole, ensuring the probe is in close contact with the bottom of the sample plate 5. Secure the probe with high-temperature thermally conductive adhesive (such as ceramic adhesive or high-temperature resistant epoxy resin) to prevent it from loosening. After the adhesive has cured, proceed with the experiment. Turn on the heating device and record the input heat (Q) or power (P=Q / t). Wait for the temperature to stabilize and record the temperatures on both sides (T1 and T2). Calculate the temperature difference ΔT=T1−T2 and record the heat transfer time (t). Substitute the measured values ​​into the formula to calculate the thermal conductivity. For example, if the tray thickness d=0.002... md (2 mm), heat transfer area A = 0.05 m2 (500 square centimeters), input heat Q = 1000 J, temperature difference ΔT = 50 ℃, heat transfer time t = 100 s, substituting into the formula, k = (1000⋅0.002) / (0.05⋅50⋅100) = 0.008. In order to reduce heat loss, a heat insulation cover 2 is set. The inside of the heat insulation cover 2 shell is filled with heat insulation cotton 11. The lifting structure 3 is set to facilitate the lifting and lowering of the heat insulation cover 2. The operation of the cylinder 9 drives the heat insulation cover 2 to lift and lower, which facilitates the loading and unloading of workpieces.

[0031] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A baking pan thermal conductivity testing device, comprising a constant temperature heating platform (1), wherein a heating zone (6) is provided at the upper end of the constant temperature heating platform (1), characterized in that: A sample plate (5) is placed at the upper end of the heating zone (6). Drill holes (7) are opened on the outer surfaces of both the upper and lower ends of the sample plate (5). A heat insulation cover (2) is provided on the upper part of the constant temperature heating stage (1). A lifting structure (3) is connected between the lower part of the outer surfaces on both sides of the heat insulation cover (2) and the outer surfaces on both sides of the constant temperature heating stage (1). The lifting structure (3) includes a fixing block (8), a cylinder (9) and a connecting block (10). An observation window (4) is installed on the outer surface of the front end of the heat insulation cover (2). The interior of the shell of the heat insulation cover (2) is filled with heat insulation cotton (11).

2. The baking pan thermal conductivity testing device according to claim 1, characterized in that: The reinforcing support column (12) is fixed inside the shell of the heat insulation cover (2), and the reinforcing support column (12) penetrates the heat insulation cotton (11).

3. The baking pan thermal conductivity testing device according to claim 2, characterized in that: The drill hole (7) is used to install the thermocouple probe.

4. The baking pan thermal conductivity testing device according to claim 3, characterized in that: The number of lifting structures (3) is two sets, and the connecting blocks (10) in the two sets of lifting structures (3) are fixedly installed in the middle of the outer surface of both ends of the constant temperature heating table (1).

5. The baking pan thermal conductivity testing device according to claim 4, characterized in that: The fixing blocks (8) in the two sets of lifting structures (3) are fixedly installed on the lower part of the outer surface of both ends of the heat insulation cover (2).

6. The baking pan thermal conductivity testing device according to claim 5, characterized in that: The outer surface of one side of the cylinder (9) is fixedly connected to the outer surface of one side of the fixing block (8), and the outer surface of the lower end of the piston rod in the cylinder (9) is fixedly connected to the outer surface of the upper end of the connecting block (10).

Images