Building door and window thermal insulation performance detection device

Abstract

The utility model relates to the technical field of door and window detection equipment, in particular to a building door and window thermal insulation performance detection device which comprises a detection box, filling plates are fixedly connected to the top and the bottom in the detection box, test piece frames are connected to the opposite sides of the filling plates, and guide plates are fixedly connected to the two sides of the test piece frames. The test piece frame divides the detection box into a heating cavity and a refrigeration cavity, the outside of one side of the heating cavity is fixedly connected with a humidity control device, the inside of the heating cavity is fixedly connected with a heating device, the inside of the refrigeration cavity is fixedly connected with a refrigeration device, and the heating cavity and the refrigeration cavity are each internally provided with at least six temperature detection devices. According to the utility model, the guide plates are additionally arranged on the two sides of the test piece, so that the direct influence of the heating device and the refrigerating device on the test piece is reduced, the unnecessary heat exchange is reduced, the test is more in line with the detection principle of steady-state heat transfer, and the detection result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window detection equipment, in particular to a detection device for the heat insulation performance of building doors and windows. Background Technique

[0002] The detection of the heat insulation performance of building doors and windows is based on the principle of steady-state heat transfer, and the calibration hot box method is used to detect the heat transfer coefficient of building exterior doors and windows. One side of the test piece is a hot box, simulating the indoor air temperature conditions in a heating building in winter; the other side is a cold box, simulating the outdoor air temperature and air flow velocity in winter. After sealing the gaps of the test piece, under the conditions of maintaining stable air temperature, air flow velocity and thermal radiation on both sides of the test piece, measure the calorific value generated by the heating device in the hot box per unit time, subtract the heat losses through the hot box wall, test piece frame, filling board, test piece and the edge of the filling board, and divide by the product of the test piece area and the air temperature difference on both sides, then the heat transfer coefficient K value of the test piece can be obtained. Chinese Patent (Application No.: CN202020092839.3) proposed a detection device for the heat insulation performance of building doors and windows, and the output ports of the heating fan and the cooling fan on both sides of the test piece directly face the test piece, which is not conducive to the detection conditions of steady-state heat transfer, will increase unnecessary heat exchange, and will cause deviation of the measured heat transfer coefficient K value, thus affecting the detection results. Therefore, it is necessary to make improvements in view of this defect. Content of the Utility Model

[0003] In view of the above technical problems, the utility model provides a detection device for the heat insulation performance of building doors and windows to solve the above defects.

[0004] To solve the above technical problems, a detection device for the heat insulation performance of building doors and windows according to the utility model includes a detection box. The bottom of the detection box is fixedly connected with support legs. Both the top and the bottom inside the detection box are fixedly connected with filling boards. One side of the opposite filling boards is connected with a test piece frame. The two sides of the test piece frame are fixedly connected with flow guiding plates. The test piece frame divides the detection box into a heating chamber and a cooling chamber. One side outside the heating chamber is fixedly connected with a humidity control device, and the inside is fixedly connected with a heating device. The cooling chamber is fixedly connected with a refrigeration device. There are no less than six temperature detection devices arranged in both the heating chamber and the cooling chamber. The temperature detection devices are in communication connection with a console. The heating device, the refrigeration device and the humidity control device are all controlled by the console.

[0005] Further, the heating device is located at the bottom inside the heating chamber.

[0006] Further, the refrigeration device is located at the upper part inside the cooling chamber.

[0007] Further, the distance between the flow guiding plate and the test piece frame is between 150 mm and 300 mm, and the area of the flow guiding plate is larger than the area of the test piece frame.

[0008] Furthermore, the inner wall of the detection box is filled with heat-insulating materials.

[0009] The utility model has the following advantages compared with the prior art:

[0010] By adding flow guiding plates on both sides of the test piece, the utility model enables stable air temperature, air flow velocity and heat radiation conditions to be maintained on both sides of the test piece respectively, reduces the direct influence of the heating device and the refrigeration device on the test piece, reduces unnecessary heat exchange, makes the test more in line with the detection principle of steady-state heat transfer, and makes the detection result more accurate. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the utility model.

[0012] In the figure: 1. Detection box, 2. Heating device, 3. Refrigeration device, 4. Humidity control device, 5. Flow guiding plate, 6. Specimen frame, 7. Specimen, 8. Temperature detection device, 9. Support leg, 10. Filling plate, 11. Console. Detailed Embodiment

[0013] The following further explains the utility model with reference to the accompanying drawings.

[0014] As Figure 1 shown, a building door and window heat preservation performance detection device includes a detection box 1, a support leg 9 is fixedly connected to the bottom of the detection box 1, filling plates 10 are fixedly connected to the top and bottom inside the detection box 1, specimen frames 6 are connected to the opposite sides of the filling plates 10, flow guiding plates 5 are fixedly connected to both sides of the specimen frames 6, the specimen frames 6 divide the detection box 1 into a heating chamber and a refrigeration chamber, a humidity control device 4 is fixedly connected to the outside of one side of the heating chamber, a heating device 2 is fixedly connected to the inside, a refrigeration device 3 is fixedly connected to the refrigeration chamber, nine temperature detection devices 8 are arranged in both the heating chamber and the refrigeration chamber, the temperature detection devices 8 are in communication connection with a console 11, and the heating device 2, the refrigeration device 3 and the humidity control device 4 are all controlled by the console 11.

[0015] According to the thermal circulation effect, hot air will rise. The heating device 2 is located at the bottom inside the heating chamber, which can make the heat be evenly distributed in the heating chamber faster.

[0016] According to the thermal circulation effect, cold air will sink. The refrigeration device 3 is located at the upper part inside the refrigeration chamber, which can make the temperature in the refrigeration chamber quickly reach consistency.

[0017] In order to ensure the effect of the flow guiding plate 5 in stabilizing the test conditions, the distance between the flow guiding plate 5 and the specimen frame 6 is between 150 mm and 300 mm, and the area of the flow guiding plate 5 is larger than that of the specimen frame 6.

[0018] To reduce unnecessary heat exchange between the heating chamber, the cooling chamber and the outside, the inner wall of the test chamber 1 is filled with heat-insulating materials.

[0019] It should be noted that in this embodiment, the heating device 2 uses an electric heating wire, the cooling device 3 uses an air-conditioning refrigeration unit, the humidity control device 4 uses a humidity regulator, and the temperature detection device 8 uses an electronic thermometer, all of which are existing devices, and their specific structures will not be elaborated too much.

[0020] The working process of this embodiment is as follows:

[0021] Install the specimen 7 on the specimen frame 6, stuff the surrounding with polystyrene foam strips. When the gap is small and difficult to stuff, polyurethane foam can be used for filling, and the joints are double-sealed with transparent tape. Then, control the heating device 2 and the humidity control device 4 through the console 11 to set the heating chamber to the test temperature; control the cooling device 4 through the console 11 to set the cooling chamber to the test temperature. When the temperatures of the heating chamber, the cooling chamber and the specimen reach the set values, and the absolute values of the hourly changes of the average air temperatures in the heating chamber and the cooling chamber are not greater than 0.1 K and 0.3 K respectively, and the absolute values of the hourly changes of the weighted average temperature differences between the inner and outer surface areas of the heating chamber and the weighted average temperature differences between the hot and cold side surface areas of the specimen frame are not greater than 0.1 K and 0.3 K respectively, and it is not a one-way change, the heat transfer process has reached a steady state. After the heat transfer process reaches a steady state, the temperature detection device 8 measures the parameters once every 30 minutes and feeds them back to the console 11, for a total of six measurements, and record the data well for subsequent calculations. After completing the detection test, remove the specimen 7.

Claims

1. A device for testing the thermal insulation performance of building doors and windows, comprising a testing box (1), wherein a supporting leg (9) is fixedly connected to the bottom of the testing box (1), and characterized in that: The top and bottom of the detection box (1) are fixedly connected to a filling plate (10), and the opposite side of the filling plate (10) is connected to a test piece frame (6). The two sides of the test piece frame (6) are fixedly connected to guide plates (5). The test piece frame (6) divides the detection box (1) into a heating chamber and a cooling chamber. The outside of the heating chamber is fixedly connected to a humidity control device (4), and the inside is fixedly connected to a heating device (2). The cooling chamber is fixedly connected to a cooling device (3). The heating chamber and the cooling chamber are each provided with no less than six temperature detection devices (8). The temperature detection devices (8) are communicatively connected to a control console (11). The heating device (2), the cooling device (3), and the humidity control device (4) are all controlled by the control console (11).

2. The building door and window thermal insulation performance detection device according to claim 1, characterized in that: The heating device (2) is located at the bottom of the heating chamber.

3. The thermal insulation performance testing device for building doors and windows according to claim 1, characterized in that: The refrigeration device (3) is located in the upper part of the refrigeration cavity.

4. The building door and window thermal insulation performance detection device according to claim 1, characterized in that: The distance between the guide plate (5) and the specimen frame (6) is between 150 mm and 300 mm, and the area of ​​the guide plate (5) is larger than the area of ​​the specimen frame (6).

5. The building door and window thermal insulation performance detection device according to claim 1, characterized in that: The wall of the detection box (1) is filled with thermal insulation material.

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