Down jacket air permeability detection device and method

Abstract

The invention relates to the technical field of down jacket performance detection, and provides a down jacket air permeability detection device and method.The down jacket air permeability detection device comprises a detection box, the interior of the detection box is divided into a first cavity and a second cavity, and a lofting assembly is arranged between the first cavity and the second cavity. Any one of the first cavity and the second cavity is filled with colored smoke, the other one of the first cavity and the second cavity is filled with air, and the internal air pressure of the first cavity and the internal air pressure of the second cavity are standard atmospheric pressure; the air permeability of the tested down jacket is evaluated by observing the color change of gas in the first cavity and the second cavity, the air permeability is in positive correlation with the color change degree of the gas in the two cavities, and the air pressure condition of the tested down jacket in actual wearing is truly simulated, so that the air permeability of the tested down jacket in actual wearing is accurately and truly reflected.

Description

Technical Field

[0001] The invention relates to the technical field of down jacket performance detection, and in particular to a down jacket air permeability detection device and method. Background Art

[0002] The breathability of a down jacket is one of the important indicators to measure its wearing comfort and functionality. The quality of the breathability directly affects human perspiration, body temperature regulation and overall wearing experience in cold environments.

[0003] At present, the industry generally uses the pressure difference method to test the breathability of down jackets. This method places the down jacket sample in a sealed test chamber and applies different pressures on both sides of the sample. The breathability of the down jacket is determined by monitoring the pressure changes. Specifically, when high-pressure gas is applied on one side, if the sample has good breathability, the high-pressure gas will quickly pass through the sample into the low-pressure side, causing the pressure on both sides to tend to balance. The breathability is evaluated by measuring the time required for this process or the amount of pressure change. Although the pressure difference method has certain feasibility, it fails to fully consider the environmental conditions when the down jacket is actually worn. When actually worn, the inner side of the down jacket is exposed to the air. The outer side of the down jacket is in contact with the human body, while the outer side is exposed to the atmosphere. The atmospheric pressure on the inside and outside is the same. There is a significant difference between the test environment simulated by the pressure difference method and the actual wearing environment, which leads to the test results being unable to accurately reflect the breathability of the down jacket when it is actually worn. In addition, during the test of the pressure difference method, the air pressure will affect the fabric fibers of the down jacket. Since the down jacket fabric is usually composed of multiple layers of fibers with certain elasticity and recovery, during the test of the pressure difference method, the action of high-pressure gas may cause the fabric fibers to be stretched or deformed, thereby affecting the breathable structure and performance of the fabric itself, thereby further reducing the accuracy and reliability of the breathability performance test.

[0004] Therefore, the present invention proposes a down jacket air permeability detection device and method to solve the above-mentioned problem. Summary of the invention

[0005] The embodiment of the present invention aims to provide a down jacket air permeability detection device and method to solve the above-mentioned problem.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A down jacket air permeability testing device comprises a testing box, wherein the interior of the testing box is divided into a first cavity and a second cavity by arranging two groups of closed components, the closed components can be opened, and a placement component for placing a test down jacket sample is arranged between the first cavity and the second cavity. When used for testing, any one of the first cavity and the second cavity is filled with colored smoke, and the other is filled with air, and the air pressure inside the first cavity and the air pressure inside the second cavity are both standard atmospheric pressure.

[0008] In an optional scheme: the closing component includes two partitions arranged in the detection box and a telescopic member arranged on the detection box, the two partitions are arranged in a butt-jointed sliding manner, both sides of the detection box are provided with through grooves adapted to the partitions, for respectively allowing the two partitions to slide through, the telescopic end of the telescopic member is hinged with two driving rods, the ends of the two driving rods away from the telescopic member are respectively hinged to the two partitions, a first sealing strip is provided on the wall of the through groove, and a second sealing strip is provided on the side of the partition.

[0009] In an optional scheme: the sample placement component includes a frame, a first clamping piece arranged on the frame, and a second clamping piece detachably arranged on the frame, the second clamping piece is used to cooperate with the first clamping piece to clamp and fix the test down jacket sample, the test box is provided with an insertion slot adapted to the frame, and the sides of the frame that contact the inner wall of the test box are provided with a third sealing strip.

[0010] In an optional solution: the frame is provided with a plurality of magnetic parts, and the second clamping part is provided with iron blocks corresponding to the first clamping part one by one.

[0011] In an optional solution: the first cavity and the second cavity are both provided with a stirring assembly for stirring the gas in the cavity so that the colored smoke and the air are quickly and evenly mixed, and the stirring assembly includes a rotatable stirring paddle and a driving member for driving the stirring paddle to rotate.

[0012] In an optional solution: the first cavity and the second cavity are both provided with transparent observation ports for observing the color of the gas in the cavity, and the detection device also includes a colorimetric card for comparing the color of the gas in the cavity.

[0013] In an optional solution: a first temperature control module is provided in the first cavity, and a second temperature control module is provided in the second cavity. The first temperature control module and the second temperature control module are used to respectively adjust the temperatures in the first cavity and the second cavity.

[0014] A method for detecting air permeability of a down jacket, using the air permeability detection device for a down jacket described in any one of the above technical solutions, comprises the following steps:

[0015] S1: Flatten the down jacket sample to be tested and place it on the sample placement component, with the down jacket sample being located between the first cavity and the second cavity;

[0016] S2: Then, colored smoke is filled into any one of the first cavity and the second cavity to reach standard atmospheric pressure, and air is filled into the other cavity to reach standard atmospheric pressure;

[0017] S3: The two sets of sealing components are opened to connect the down jacket samples between the first cavity and the second cavity. After a certain period of time, the two sets of sealing components are closed, and the air permeability of the tested down jacket is evaluated by observing the color change of the gas inside the first cavity and the second cavity. The air permeability is positively correlated with the degree of color change of the gas inside the two cavities.

[0018] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0019] 1. After the down jacket sample to be tested is flattened and placed on the sample placement component, colored smoke is filled into any one of the first cavity and the second cavity to reach the standard atmospheric pressure, and air is filled into the other cavity to reach the standard atmospheric pressure. Then the two sets of sealing components are opened to connect the first cavity and the second cavity with the down jacket sample. After a certain period of time, the two sets of sealing components are closed, and the air permeability of the tested down jacket is evaluated by observing the color change of the gas inside the first cavity and the second cavity. The air permeability is positively correlated with the degree of color change of the gas inside the two cavities, which truly simulates the air pressure conditions when the down jacket is actually worn, thereby accurately and truly reflecting the air permeability of the tested down jacket when actually worn;

[0020] 2. The first temperature control module and the second temperature control module are used to respectively adjust the temperatures in the first cavity and the second cavity to simulate the actual wearing temperature conditions of the down jacket, thereby further accurately and truly reflecting the breathability of the down jacket when actually worn.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and are used together with the specification to explain the principles of the present application. At the same time, these drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments.

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0024] Figure 2 It is a side sectional view of an embodiment of the present invention.

[0025] Figure 3 3D schematic diagram of the detection box in the embodiment of the present invention.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0027] Figure 5It is a structural schematic diagram of a lofting component in an embodiment of the present invention.

[0028] Notes on figure numbers: 1-test box, 101-first cavity, 102-second cavity, 2-inflating port, 3-barometer, 4-first temperature control module, 5-exhaust port, 6-sealing valve, 7-closing assembly, 701-partition, 702-telescopic member, 703-driving rod, 704-through groove, 705-first sealing strip, 8-placement assembly, 801-frame, 802-first clamping member, 803-second clamping member, 804-magnetic member, 805-iron block, 806-insertion slot, 807-handle, 808-third sealing strip, 9-stirring assembly, 901-driving member, 902-stirring paddle, 10-second temperature control module, 11-transparent observation port, 12-colorimetric card. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] See also Figure 1 A down jacket air permeability testing device comprises a testing box 1, the interior of the testing box 1 is divided into a first cavity 101 and a second cavity 102 by arranging two groups of closing components 7, the closing components 7 can be opened, and a placing component 8 for placing a test down jacket sample is arranged between the first cavity 101 and the second cavity 102. When used for testing, any one of the first cavity 101 and the second cavity 102 is filled with colored smoke, and the other is filled with air, and the internal air pressure of the first cavity 101 and the internal air pressure of the second cavity 102 are both standard atmospheric pressure (101.325 kPa).

[0031] First, the down jacket sample to be tested is flattened and placed on the sample placement component 8, with the down jacket sample located between the first cavity 101 and the second cavity 102. Then, colored smoke is filled into any one of the first cavity 101 and the second cavity 102 to reach the standard atmospheric pressure, and air (colorless) is filled into the other cavity to reach the standard atmospheric pressure. Then, the two groups of sealing components 7 are opened to connect the first cavity 101 and the second cavity 102 with the down jacket sample separated. After a certain period of time, the two groups of sealing components 7 are closed, and the air permeability of the tested down jacket is evaluated by observing the color change of the gas inside the first cavity 101 and the second cavity 102. The air permeability is positively correlated with the degree of color change of the gas inside the two cavities. Specifically, the deeper the degree of lightening of the gas in the cavity filled with colored smoke and the deeper the degree of color change of the gas in the cavity filled with air, the better the air permeability of the tested down jacket, and vice versa.

[0032] Furthermore, both the first cavity 101 and the second cavity 102 are provided with an inflation port 2 and an exhaust port 5 for discharging the original gas in the cavity, and a sealing valve 6 is also provided on the exhaust port 5 .

[0033] Furthermore, the first cavity 101 and the second cavity 102 are both provided with a barometer 3 for real-time monitoring of air pressure. When inflating the cavity, the air pressure in the cavity is monitored and fed back in real time through the barometer 3. When the standard atmospheric pressure is reached, inflation is stopped. The barometer 3 is a prior art, and its specific model and setting are not limited or elaborated here.

[0034] See also Figure 1 to Figure 4 In one embodiment of the present invention, the closing component 7 includes two partitions 701 arranged in the detection box 1 and a telescopic member 702 arranged on the detection box 1 (the telescopic member 702 is a hydraulic rod, an electric telescopic rod, etc. in the prior art, which is not limited or elaborated herein), the two partitions 701 are arranged in a butt-jointed sliding manner, and both sides of the detection box 1 are provided with through grooves 704 adapted to the partitions 701, which are used for respectively allowing the two partitions 701 to slide through, and the telescopic ends of the telescopic members 702 are hinged with two driving rods 703, and the ends of the two driving rods 703 away from the telescopic members 702 are respectively hinged to the two partitions 701, and the through groove 704 is provided with a first sealing strip 705 on the groove wall, and the side of the partition 701 is provided with a second sealing strip (not shown in the figure).

[0035] In this embodiment, under the action of two driving rods 703, the telescopic member 702 is extended and retracted to drive the two partitions 701 to slide away / closer at the same time to achieve opening and closing; a first sealing strip 705 and a second sealing strip are provided to achieve sealing, thereby preventing air leakage and external gas from entering and affecting the detection results.

[0036] See also Figure 4 and Figure 5 In one embodiment of the present invention, the sample placement component 8 includes a frame 801, a first material clamping piece 802 disposed on the frame 801, and a second material clamping piece 803 detachably disposed on the frame 801, the second material clamping piece 803 is used to cooperate with the first material clamping piece 802 to clamp and fix the test down jacket sample, the test box 1 is provided with an insertion slot 806 adapted to the frame 801, and the sides of the frame 801 that contact the inner wall of the test box 1 are all provided with a third sealing strip 808;

[0037] The frame 801 is provided with a plurality of magnetic members 804 , and the second clamping member 803 is provided with iron blocks 805 corresponding to the first clamping members 802 one by one.

[0038] In this embodiment, when placing the test down jacket sample, first remove the frame 801 from the test box 1, and then remove the second clamping piece 803, then make the first clamping piece 802 face downward and lay the frame 801 flat as a whole, then unfold the test down jacket sample and place it on the first clamping piece 802, and install the second clamping piece 803 and push it toward the first clamping piece 802 until the side of the test down jacket sample is pressed tightly, and the second clamping piece 803 is positioned by the magnetic piece 804 and the magnetic iron block 805, and it is easy to disassemble and assemble, and finally the frame 801 is inserted into the test box 1 through the insertion slot 806, and subsequent detection operations can be carried out. It should be noted that after the frame 801 is inserted into place, the frame 801 is also positioned by corresponding positioning measures (not shown in the figure), such as by bolts, buckles, etc., which are prior art and are not limited or elaborated here.

[0039] Furthermore, in this embodiment, a handle 807 is provided on the frame 801 to facilitate the removal and installation of the layout assembly 8 .

[0040] See also Figure 1 In one embodiment of the present invention, a stirring assembly 9 is provided on the first cavity 101 and the second cavity 102 for stirring the gas in the cavity so that the colored smoke and the air are quickly and evenly mixed. The stirring assembly 9 includes a rotatable stirring paddle 902 and a driving member 901 for driving the stirring paddle 902 to rotate (the driving member 901 is a rotating device such as a reduction motor, a servo motor, etc. in the prior art, which is the prior art and is not limited or elaborated here).

[0041] In this embodiment, after the first cavity 101 and the second cavity 102 are connected with each other for a certain period of time, the two sets of sealing components 7 are closed, and the gas in the first cavity 101 and the second cavity 102 is stirred by two sets of stirring components 9, so that the colored smoke and the air are quickly and evenly mixed, thereby preventing the colored smoke from concentrating in one place and affecting the accurate feedback of the gas color inside the cavity.

[0042] See also Figure 1 In one embodiment of the present invention, the first cavity 101 and the second cavity 102 are both provided with a transparent observation port 11 for observing the color of the gas in the cavity. The detection device also includes a colorimetric card 12 for comparing the color of the gas in the cavity. By comparing the observed color of the gas in the cavity with the colorimetric card 12, the color change of the gas can be intuitively and clearly known.

[0043] See also Figure 1 In one embodiment of the present invention, a first temperature control module 4 is provided in the first cavity 101, and a second temperature control module 10 is provided in the second cavity 102. The first temperature control module 4 and the second temperature control module 10 are used to respectively adjust the temperatures in the first cavity 101 and the second cavity 102.

[0044] In this embodiment, the first temperature control module 4 and the second temperature control module 10 are used to respectively adjust the temperatures in the first cavity 101 and the second cavity 102 to simulate the actual wearing temperature conditions of the down jacket. The specific operation is as follows: according to the inner and outer directions of the test down jacket sample after being fixed, the temperatures in the first cavity 101 and the second cavity 102 are adjusted. Here, the inner side (the side close to the body) of the test down jacket sample is directed toward the first cavity 101, and the outer side (the appearance side) is directed toward the second cavity 102. The first temperature control module 4 is used to adjust the temperatures in the first cavity 101 and the second cavity 102. The temperature inside the cavity 101 is adjusted to the wearing temperature, such as 20°C, to simulate the temperature of the side of the down jacket when it is actually worn. The temperature inside the second cavity 102 is adjusted by the second temperature control module 10, such as -10°C, to simulate the air temperature when the down jacket is actually worn, thereby accurately and truly reflecting the breathability of the tested down jacket under the actual wearing temperature conditions. It should be noted that the first temperature control module 4 and the second temperature control module 10 are prior art and are widely used in biological incubators, sample storage boxes and other equipment, and their specific structures are not described here.

[0045] The present invention also provides a method for detecting air permeability of a down jacket, which uses a device for detecting air permeability of a down jacket according to any one of the above technical solutions, comprising the following steps:

[0046] S1: Flatten the down jacket sample to be tested and place it on the sample placement component 8, with the down jacket sample being located between the first cavity 101 and the second cavity 102;

[0047] S2: Then, colored smoke is filled into any one of the first cavity 101 and the second cavity 102 to reach the standard atmospheric pressure, and air is filled into the other cavity to reach the standard atmospheric pressure;

[0048] S3: The two sets of sealing components 7 are opened to connect the first cavity 101 and the second cavity 102 with the down jacket sample. After a certain period of time, the two sets of sealing components 7 are closed. The air permeability of the tested down jacket is evaluated by observing the color change of the gas inside the first cavity 101 and the second cavity 102. The air permeability is positively correlated with the degree of color change of the gas inside the two cavities.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A down jacket air permeability testing device, comprising a testing box (1), characterized in that: The interior of the test box (1) is divided into a first cavity (101) and a second cavity (102) by arranging two groups of sealing components (7); the sealing components (7) can be opened; a placement component (8) for placing a test down jacket sample is arranged between the first cavity (101) and the second cavity (102); when used for testing, one of the first cavity (101) and the second cavity (102) is filled with colored smoke, and the other is filled with air; and the internal air pressure of the first cavity (101) and the internal air pressure of the second cavity (102) are both standard atmospheric pressure.

2. The down jacket air permeability testing device according to claim 1, characterized in that: The sealing component (7) comprises two partitions (701) arranged in the detection box (1) and a telescopic member (702) arranged on the detection box (1); the two partitions (701) are arranged in a butt-jointed sliding manner; both sides of the detection box (1) are provided with through grooves (704) adapted to the partitions (701) for respectively allowing the two partitions (701) to slide through; two driving rods (703) are hingedly provided at the telescopic ends of the telescopic members (702); the ends of the two driving rods (703) away from the telescopic members (702) are respectively hingedly connected to the two partitions (701); a first sealing strip (705) is provided on the groove wall of the through groove (704); and a second sealing strip is provided on the side of the partition (701).

3. The down jacket air permeability testing device according to claim 1, characterized in that: The sample placement component (8) comprises a frame (801), a first clamping piece (802) arranged on the frame (801), and a second clamping piece (803) detachably arranged on the frame (801), wherein the second clamping piece (803) is used to cooperate with the first clamping piece (802) to clamp and fix the test down jacket sample, and the test box (1) is provided with an insertion groove (806) adapted to the frame (801), and the sides of the frame (801) that contact the inner wall of the test box (1) are all provided with a third sealing strip (808).

4. The down jacket air permeability testing device according to claim 3, characterized in that: The frame (801) is provided with a plurality of magnetic parts (804), and the second clamping part (803) is provided with iron blocks (805) corresponding one to one with the first clamping part (802).

5. The down jacket air permeability testing device according to claim 1, characterized in that: The first cavity (101) and the second cavity (102) are both provided with a stirring assembly (9) for stirring the gas in the cavity so that the colored smoke and the air are quickly and evenly mixed. The stirring assembly (9) comprises a rotatable stirring paddle (902) and a driving member (901) for driving the stirring paddle (902) to rotate.

6. The down jacket air permeability testing device according to claim 1, characterized in that: The first cavity (101) and the second cavity (102) are both provided with transparent observation ports (11) for observing the color of the gas in the cavity, and the detection device also includes a colorimetric card (12) for comparing the color of the gas in the cavity.

7. The down jacket air permeability testing device according to claim 1, characterized in that: A first temperature control module (4) is provided in the first cavity (101), and a second temperature control module (10) is provided in the second cavity (102); the first temperature control module (4) and the second temperature control module (10) are used to respectively control the temperatures in the first cavity (101) and the second cavity (102).

8. A method for testing the air permeability of a down jacket, using the air permeability testing device for a down jacket as described in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Flattening a down jacket sample to be tested and placing it on a sample placement component (8), wherein the down jacket sample is located between the first cavity (101) and the second cavity (102); S2: Then, colored smoke is filled into any one of the first cavity (101) and the second cavity (102) to reach standard atmospheric pressure, and air is filled into the other cavity to reach standard atmospheric pressure; S3: The two sets of sealing components (7) are opened so that the first cavity (101) and the second cavity (102) are connected to each other to form a down jacket sample. After a certain period of time, the two sets of sealing components (7) are closed. The air permeability of the tested down jacket is evaluated by observing the color change of the gas inside the first cavity (101) and the second cavity (102). The air permeability is positively correlated with the degree of color change of the gas inside the two cavities.

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