A device and method for detecting the amount of water vapor generated by a steam eye compress

Abstract

The application discloses a steam hot compress eye mask produced water vapor amount detection device and detection method, the detection device includes sealed box, sample fixed module, temperature control hot plate module and temperature and humidity monitoring module arranged in the sealed box, the temperature control hot plate module includes temperature control hot panel, the sample fixed module includes lower layer pressing plate, upper layer pressing plate and pressing device, a pair of upward recesses are symmetrically arranged on both sides of the lower layer pressing plate, a pair of through holes are arranged on the upper layer pressing plate and matched with the recesses, the size of the recesses is greater than the outer frame size of the eye mask filling part and less than the outer frame size of the eye mask heating body part outer bag. The application uses the above detection device, fixes the eye mask on the sample fixed module with the eye mask side up, calibrates the error of the detection device through the temperature control hot plate module and the temperature and humidity detection module, and determines the detection calibration coefficient of the device. The detection device has simple structure, high detection accuracy, and is easy to popularize, promote and standardize.

Description

Technical Field

[0001] This invention belongs to the technical field of steam eye masks, and particularly relates to a device and method for detecting the amount of water vapor generated by a steam eye mask. Background Technology

[0002] like Figure 6 As shown, a steam-heated eye mask typically consists of a non-woven fabric eye mask body 6, a pair of heating element parts 7 symmetrically arranged on both sides of the eye mask body 6, and a pair of ear loops 8. The heating element parts 7 are located in the middle of both sides of the eye mask body 6. Each heating element part 7 includes an outer bag 71 and a filling part 72 sealed in the middle of the outer bag 71 and filled with the heating element. The heating element mainly consists of iron powder, water, activated carbon, salt, and water-absorbing resin. The product utilizes the chemical reaction between the iron powder in the heating element and oxygen in the air to release heat and generate a small amount of water vapor, thereby achieving the effect of heat compressing the eyes. The generation of water vapor is one of the main performance indicators of steam-heated eye mask products. Many companies claim that their products generate a lot of water vapor during the heating process. However, accurate and efficient detection of the amount of water vapor generated by steam-heated eye masks has always been a challenge in the industry, especially for the amount of water vapor generated on the side of the steam-heated eye mask that is in contact with the face. Current detection devices and methods are still unable to accurately detect this amount of water vapor.

[0003] In the prior art, a kind of eyeshade humidity measuring instrument disclosed in Chinese invention patent CN202210003186.0 obtains the water vapor amount generated by eyeshade by condensing water vapor in cooling box and then obtaining the mass difference before and after cooling box.The cooling box changes with time in a certain environment and the hot gas generated by the eyeshade flows on the surface of the cooling box, and the coolant in the cooling box will also melt, so the condensation effect will be weakened.Using this device for detection cannot guarantee that the water vapor is completely condensed in the cooling box, resulting in a large error in the measured water vapor amount, and the cooling box needs to be replaced for condensation during the detection process, which is cumbersome.Chinese invention patent CN201810971018.4 discloses a measuring instrument and a water vapor amount detection method for measuring the water vapor amount generated by a heating appliance, and provides a measuring instrument and a water vapor amount detection method for measuring the water vapor amount generated by a heating appliance, but the measuring instrument and the detection method can only measure the total steam amount, and the device uses an adsorbent to adsorb the water vapor generated by the heating appliance, which requires cooling nitrogen and other auxiliary consumables, resulting in high detection cost and inconvenient detection operation.Chinese invention patent CN201811359308.X discloses a water vapor collection and weighing device for steam heating body, which uses a glass cover to collect the water vapor generated by the heating body. The principle is that when the water vapor reaches a certain amount, it will condense on the cup wall of the glass cover. By weighing the mass before and after the reaction of the glass cover, the mass difference is calculated to obtain the generated water vapor amount. This device and method have the defects that when the water vapor amount is small, the water vapor in the glass cover is not saturated, and the water vapor cannot condense on the cup wall. Secondly, the glass cover is designed with a vent, and the generated water vapor will also overflow through the vent. Thirdly, the air moisture in the cup of the glass cover may also condense on the cup wall, which will cause inaccurate results. Patent No. ZL 99805684.7 discloses a steam generating pad, which calculates the mass change of the heating body before and after the reaction to obtain the water vapor amount generated by the heating body, but the result obtained in this way is not accurate. Because the heating body not only condenses water vapor, but also reacts with oxygen in the air to generate a certain amount of water vapor, the final substance generated by the heating body is increased due to the entry of oxygen, so the water vapor amount generated by the heating body obtained from the heating body is not accurate.

[0004] Therefore, it is necessary to design a detection device and a detection method that can accurately detect the water vapor amount generated by the steam hot compress eyeshade on the side of the face to which the steam hot compress eyeshade is attached, which is very necessary for the evaluation of the performance of the steam hot compress eyeshade product. SUMMARY

[0005] To solve the above problems, the present application provides a water vapor amount detection device and a detection method for steam hot compress eyeshade, which can accurately detect the water vapor amount generated by the steam hot compress eyeshade on the side of the face to which the steam hot compress eyeshade is attached, thereby meeting the needs of related field applications.

[0006] The technical scheme of the present application is: a steam hot compress eye mask water vapor amount detection device, comprising a sealed box body, a sample fixing module, a temperature control heating plate module and a temperature and humidity monitoring module arranged in the sealed box body,

[0007] The front side of the sealed box body is movably connected with a box door, the temperature control heating plate module comprises a temperature control heating panel, the sample fixing module comprises a lower layer pressing plate and an upper layer pressing plate for fixing the eye mask, and a pressing device for pressing the lower layer pressing plate and the upper layer pressing plate, a pair of upwardly open grooves are symmetrically arranged on the two sides of the lower layer pressing plate, a pair of through holes matching the grooves are arranged on the upper layer pressing plate, and the size of the grooves is greater than the outer frame size of the filling part of the eye mask and smaller than the outer frame size of the outer bag of the heat generating part of the eye mask. When the eye mask is pressed between the upper layer pressing plate and the lower layer pressing plate, the heat generating part of the eye mask is covered on the groove, and the filling part of the eye mask is arranged between the groove and the through hole, so that the filling part of the eye mask is exposed to the air; in this way, when the non-adhesive side of the eye mask faces upward, the water vapor generated by the non-adhesive side of the eye mask cannot enter the inside of the sealed box body.

[0008] The present application further provides that the pressing device comprises a pair of fixed supports arranged on the two sides of the lower layer pressing plate and a locking bolt, the fixed support comprises a top plate, a bottom plate and a vertical plate connecting the outer edges of the top plate and the bottom plate, the distance between the top plate and the bottom plate is greater than the thickness of the lower layer pressing plate and the upper layer pressing plate, the two sides of the lower layer pressing plate are arranged on the bottom plate, and the two sides of the upper layer pressing plate are arranged below the top plate, a screw hole matching the locking bolt is arranged on the top plate, and the locking bolt is in abutment with the upper layer pressing plate through the screw hole.

[0009] The present application further provides that the sealed box body is surrounded by an upper side plate, a lower side plate, a left side plate, a right side plate, a rear side plate and a front side box door, the left side edge of the box door is hingedly connected to the left side plate, and the right side edge of the box door is connected to the right side plate through a lock.

[0010] The present application further provides that the front edges of the upper side plate, the lower side plate, the left side plate and the right side plate are provided with sealing strips to improve the sealing performance of the sealed box body.

[0011] The present application further provides that the temperature and humidity monitoring module comprises a temperature and humidity display screen and a temperature and humidity probe externally arranged on the temperature and humidity display screen, and the temperature and humidity probe is electrically connected to the temperature and humidity display screen.

[0012] The present application further provides that the temperature and humidity monitoring module is arranged on the side of the sealed box body away from the box door, further improving the detection accuracy.

[0013] The application is further provided with an air inlet and outlet valve and a vacuum pressure gauge for testing the pressure in the sealed box.

[0014] The application is further provided with a sealed box with a volume of 50±10L.

[0015] The application also provides a method for detecting the amount of water vapor generated by a steam compress for eye treatment, using the detection device described above, comprising the following steps:

[0016] (1) detecting the sealing property of the sealed box;

[0017] (2) determining the calibration coefficient of the detection device: adding a certain amount of pure water to the temperature-controlled heating panel, recording the temperature and humidity changes before and after the evaporation of the pure water, calculating the amount of water vapor generated by the evaporation of the pure water collected by the sealed box, and calculating the ratio of the mass of the added pure water to the amount of water vapor collected by the sealed box, which is the calibration coefficient F;

[0018] (3) placing the eye compress sample with the side to be tested upwards on the sample fixing module, and then placing the sample fixing module in the sealed box, recording the temperature and humidity in the sealed box before and after the reaction of the eye compress for 20 minutes, and calculating the amount of water vapor generated by the eye compress collected in the sealed box m 样 ;

[0019] (4) blank experiment: taking the eye compress sample with the same batch of eye compresses that have ended heating, repeating step (3), and recording the amount of water vapor generated by the blank experiment m 空 ;

[0020] (5) calculating the amount of water vapor generated by the eye compress sample for steam compress for eye treatment m = (m 样 -m 空 )×F.

[0021] The application is further provided with a method for detecting the amount of water vapor generated by a steam compress for eye treatment, comprising the following steps:

[0022] (1) checking the sealing property of the sealed box;

[0023] (2) placing the detection device and the smallest packaging of the eye compress sample in a (20±1)℃ / 20%~60%RH windless environment for at least 2h, and keeping the door of the sealed box open during the balancing process;

[0024] (3) with micro-injection needle suction 100-300 μL pure water, pure water evenly point-shaped coating on the surface of the temperature-controlled hot plate, record the temperature T1 and relative humidity U1 in the box, through T1 and U1 calculate the initial absolute content of water vapor in the sealed box m1; open temperature-controlled hot plate switch, set the temperature-controlled hot plate surface temperature at 45-55 ℃, close the door, open the timer; 20 min after the pure water completely evaporated, record the temperature T2 and relative humidity U2 in the box again, calculate the absolute content of moisture in the sealed box m2, the calibration coefficient F of the device = m 纯水 / (m2-m1), m 纯水 is the known mass of pure water added;

[0025] (4) open the door, close the temperature-controlled hot plate, balance for 20 min;

[0026] (5) take a pair of eyeshade samples, along the central symmetrical line of the sample, divide the sample into two equal parts, take out the sample fixing module in the sealed box, place the two samples on the grooves of the sample fixing module, ensure that the side of the eyeshade is upward, the filling part of the eyeshade is located between the groove and the through hole, and then press the upper and lower pressing plates to fix the sample, and ensure that the heating body in the eyeshade is not pressed during the fixing process;

[0027] (6) place the sample fixing module containing the sample in the center of the bottom of the sealed box, close the door, open the timer, record the temperature T3 and relative humidity U3 in the sealed box, and calculate the absolute content of moisture in the sealed box m3; record the temperature T4 and relative humidity U4 in the sealed box again after the sample heats for 20 min, calculate the absolute content of moisture in the sealed box m4, and the amount of water vapor generated by the eyeshade sample collected in the sealed box m 样 = m4-m3;

[0028] (7) blank test: take the sample with the same batch of heating end, repeat steps (5) and (6), and record the amount of water vapor generated by the blank test m 空 ;

[0029] (8) the amount of water vapor generated by the measured eyeshade sample m = (m 样 -m 空 ) × F.

[0030] The application further provides that, in step (1), the detection method of the sealing performance of the sealed box is: close the door of the detection device, open the inlet and outlet valve, and draw the vacuum degree in the sealed box to-0.02 MPa to-0.05 MPa, close the inlet and outlet valve, and if the vacuum degree in the box does not change within 20 min, it is considered that the sealing performance of the box is good.

[0031] In the application, the absolute mass m of water in the closed box at T℃ / U% temperature and humidity is calculated according to the formula:

[0032]

[0033] m - absolute content of water in the closed box (mg);

[0034] P s - saturated vapor pressure of water at T℃ (Pa) (see Table B.1 in Appendix B of GB / T 11605-2005);

[0035] U - relative humidity in the closed box (%);

[0036] R w - gas constant of water vapor (461.52);

[0037] T - temperature in the closed box (℃);

[0038]

[0039] 1000000 - mass conversion factor, kg converted to mg.

[0040] Compared with the prior art, the application has the following beneficial effects: (1) The water vapor amount detection device of the steam hot compress eye mask generates a sample fixing module to ensure that only the water vapor amount generated on the eye mask side is collected, and a temperature control heating plate module and a temperature and humidity monitoring module are set to calibrate the detection device for error, further improving the accuracy of detection. (2) The detection device of the application further improves the accuracy of the detection result by optimizing the volume of the box. (3) The detection method of the application reduces the detection error of the sample by calibration and blank experiment, and combines the temperature and humidity parameters in the sealed box, so as to realize the accurate calculation of the water vapor amount generated on the side of the steam hot compress eye mask. (4) The detection device of the application has simple structure, low manufacturing cost, simple operation, high detection accuracy, and is easy to popularize and standardize. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a front view structural schematic diagram of the detection device of the application.

[0042] Figure 2 It is a three-dimensional structural schematic diagram of the detection device of the application.

[0043] Figure 3 It is a top view structural schematic diagram of the detection device of the application.

[0044] Figure 4 It is a schematic diagram of the sample fixing module of the application.

[0045] Figure 5 It is a schematic diagram of the front view structure of the sample fixing module of the application.

[0046] Figure 6 It is a schematic diagram of the structure of the steam hot compress eye mask sample.

[0047] Figure 7 It is a schematic diagram of the steam hot compress eye mask sample placed on the lower pressing plate.

[0048] Wherein, 1, sealed box body, 101, left side plate, 102, right side plate, 103, upper side plate, 104, lower side plate, 105, rear side plate, 106, box door, 107, sealing strip, 108, vacuum pressure gauge, 109, inlet and outlet valve, 2, sample fixing module, 210, lower pressing plate, 211, groove, 220, upper pressing plate, 221, through hole, 230, pressing device, 3, temperature-controlled heating plate module, 301, temperature-controlled heating panel, 302, temperature control key, 4, temperature and humidity monitoring module, 401, temperature and humidity probe, 402, temperature and humidity display screen, 5, micro sample injection needle, 231, top plate, 232, bottom plate, 233, vertical plate, 234, locking bolt, 6, eye mask body, 7, heating body part, 71, outer bag, 72, filling part, 8, ear band. DETAILED DESCRIPTION

[0049] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0050] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change.

[0051] In the drawings of the disclosed embodiments, only the structures related to the disclosed embodiments are involved, and other structures can be referred to the general design, and the same embodiments and different embodiments in the application can be combined with each other without conflict.

[0052] The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0053] Embodiment 1

[0054] Reference Figures 1-4 The steam hot compress eye mask water vapor generation detection device provided by the application comprises a sealed box body 1, a sample fixing module 2, a temperature-controlled heating plate module 3 and a temperature and humidity monitoring module 4 arranged in the sealed box body 1; wherein,

[0055] The sealing box 1 is cuboid in shape, surrounded by a left side plate 101, a right side plate 102, an upper side plate 103, a lower side plate 104, a rear side plate 105 and a front side box door 106, the left side edge of the box door 106 is hingedly connected to the left side plate 101 for opening and closing of the box door 106, and the right side edge of the box door 106 is connected to the right side plate 102 by a lock catch;

[0056] The sample fixing module 2 comprises a lower layering plate 210 and an upper layering plate 220 for fixing the eye mask, and a pressing device 230 for pressing the lower layering plate 210 and the upper layering plate 220, a pair of upwardly open grooves 211 are symmetrically formed on both sides of the lower layering plate 210, a pair of through holes 221 matching the grooves 211 are formed on the upper layering plate 220, the size of the grooves 211 is greater than the outer frame size of the eye mask filling part 72 and less than the outer frame size of the eye mask heat body part outer bag 71;

[0057] The temperature control heating plate module 3 comprises a temperature control heating panel 301 and a temperature control key 302, and is arranged on the lower side plate 104; the temperature and humidity monitoring module 4 comprises a temperature and humidity display screen 402 and a high-precision temperature and humidity probe 401 externally arranged on the temperature and humidity display screen 402, the temperature and humidity probe 401 is electrically connected to the temperature and humidity display screen 402 for detecting the temperature and humidity inside the sealing box 1;

[0058] The top of the sealing box 1 is provided with an air inlet and outlet valve 109 and a vacuum pressure gauge 108 for testing the pressure inside the sealing box 1, in this embodiment, the air inlet and outlet valve 109 is a copper ball valve.

[0059] It should be noted that, in order to more accurately detect the temperature and humidity inside the sealing box, the temperature and humidity detection module 4 is arranged on the side of the sealing box 1 away from the front side box door 106. In this embodiment, the temperature and humidity detection module 4 can be directly placed on the lower side plate 104, or arranged on the inner side wall of the left side plate 101, the right side plate 102 or the rear side plate 105.

[0060] In this embodiment, the upper side plate 103, the lower side plate 104, the left side plate 101, the right side plate 102 and the rear side plate 105 are all made of transparent acrylic plates, and the front edges of the upper side plate 103, the lower side plate 104, the left side plate 101 and the right side plate 102 are provided with sealing strips 107 for improving the sealing performance of the sealing box 1.

[0061] In this embodiment, the groove 211 is a square slot, and in order to facilitate the processing of the groove, the lower layer of the pressboard 210 is composed of two layers of horizontal plates, wherein a square through hole is formed in the middle of the upper layer of the horizontal plate, and the lower layer of the pressboard 210 and the upper layer of the pressboard 220 are both made of polyvinyl chloride plastic plate.

[0062] Further, the detection device is also equipped with a special micro-injection needle 5, and the inner side wall of the sealed box 1 is provided with a clamping groove for placing the micro-injection needle 5.

[0063] As shown in Figure 4 and 5 In this embodiment, the pressing device 230 includes a pair of fixed supports and locking bolts 234 arranged on both sides of the lower layer of the pressboard 210. In this embodiment, the fixed support is a right-angle U-shaped support, which includes a top plate 231, a bottom plate 232, and a vertical plate 233 connecting the outer edges of the top plate 231 and the bottom plate 232. The distance between the top plate 231 and the bottom plate 232 is greater than the total thickness of the lower layer of the pressboard 210 and the upper layer of the pressboard 220. The two sides of the lower layer of the pressboard 210 are respectively placed on the bottom plate 232, and the two sides of the upper layer of the pressboard 220 are respectively placed below the top plate 231. A screw hole matching the locking bolt 234 is formed in the top plate 231, and the locking bolt 234 passes through the screw hole and abuts against the upper layer of the pressboard 220. By rotating the locking bolt 234, the loosening and pressing of the upper layer of the pressboard 220 and the lower layer of the pressboard 210 can be controlled. In order to facilitate the rotation of the locking bolt, a handle 235 is arranged at the top of the locking bolt 234.

[0064] When the sample fixing module 2 is used to fix the eye mask product to be tested, as shown in Figure 7 , the sample fixing module 2 is first taken out of the sealed box 1, the locking bolt 234 is loosened, and the upper layer of the pressboard 220 is removed. The eye mask sample is cut along the central symmetry line and divided into two equal parts, which are placed on the lower layer of the pressboard 210 and covered on the top of the groove 211, while ensuring that the filling part 72 of the eye mask to be tested is placed in the middle position above the groove 211, and the side of the eye mask to be tested (the inner side) faces upward, and the non-adhesive side (the outer side) faces downward. In this way, the water vapor generated on the adhesive side can be released into the sealed box 1, and the water vapor generated on the non-adhesive side (the outer side) cannot be released into the sealed box. Then, the upper layer of the pressboard 220 is placed on the lower layer of the pressboard 210, and the through hole 221 of the upper layer of the pressboard 220 is aligned with the groove 211 of the lower layer of the pressboard 210. Then, the locking bolt 234 is tightened to press the upper layer of the pressboard 220 and the lower layer of the pressboard 210. Then, the sample fixing module 2 with the eye mask product fixed is placed in the sealed box 1. The above fixing process of the sample should ensure that the eye mask does not press the heating body filled in the eye mask.

[0065] Further, in the present application, considering the need to set up sample fixing module, temperature control hot plate module and temperature and humidity monitoring module in the detection device, as well as the processing cost of the sealed box, the volume of the sealed box is 50±10L, which is the preferred volume of the sealed box in the subsequent examples.

[0066] The present application also provides a method for detecting the amount of water vapor generated by a steam hot compress eye mask, using the above detection device, comprising the following steps:

[0067] (1) Check the sealing performance of the box, the method is: close the box door 106 of the sealed box of the detection device, open the inlet and outlet valve 109, and the vacuum degree in the sealed box 1 is extracted to-0.02MPa to-0.05MPa, close the inlet and outlet valve 109, if the vacuum degree in the sealed box does not change within 20min, it can be considered that the sealing performance of the sealed box 1 is good. The detection frequency of the sealing performance of the detection device is not less than once every half year;

[0068] (2) Place the detection device and the smallest packaging of the steam hot compress eye mask to be tested in a (20±1)℃ / 20%~60%RH windless environment for at least 2h, and the box door of the sealed box should be kept open during the balancing process;

[0069] (3) Use a micro-sampling needle to suck 200μL of pure water, and evenly point the pure water on the upper surface of the temperature control hot plate 301, record the temperature T1 and relative humidity U1 in the box, calculate the initial absolute content m1 of water vapor in the box through T1 and U1, turn on the temperature control hot plate 301 switch, set the temperature of the upper surface of the temperature control hot plate 301 to 45℃~55℃, close the box door 106, and turn on the timer; after 20min, the pure water is completely evaporated, and the temperature T2 and relative humidity U2 in the sealed box 1 are recorded again, the absolute content m2 of water in the box is calculated through T2 and U2, and the calibration coefficient F of the detection device is calculated as F=(m2-m1) / (m2-m1); 纯水

[0070] (4) Open the box door 106 of the sealed box, turn off the power of the temperature control hot plate 301, and balance for 20min;

[0071] (5) Take one pair of steam hot compress eye masks, open the packaging bag, take out the sample, tear off the ear band 8 of the steam hot compress eye mask, and cut the sample into two equal parts along the central symmetrical line; take out the sample fixing module 2 in the sealed box 1, place the cut sample on the square groove 211 of the sample fixing module 2, ensure that the side of the steam hot compress eye mask faces upward, the filling part 72 of the eye mask is located in the middle of the square groove 211 and the through hole 221, and then press the upper layer 220 and the lower layer 210 to fix the sample, so as to ensure that the sample is not pressed into the eye mask. In order to minimize the loss of steam amount of the sample, this step should be completed within 30s;​

[0072] (6) Put the sample fixing module 2 containing the sample into the central position of the bottom of the sealed box 1, close the box door 106, open the timer, record the temperature T3 and the relative humidity U3 in the sealed box 1, calculate the absolute moisture content m3 in the sealed box 1 through T3 and U3; record the temperature T4 and the relative humidity U4 in the sealed box again after the eye mask sample generates heat for 20 min, calculate the absolute moisture content m4 in the sealed box through T4 and U4, and the water vapor amount m generated by the steam hot compress eye mask collected in the sealed box 1 样 = m4-m3; It should be noted here that the heating time is set to 20 min because the recommended use time of the steam hot compress eye mask is about 20 min, and the basis for detecting the steam amount generated by the steam hot compress eye mask product in the existing standard is the steam amount generated in 20 min.

[0073] (7) Blank test: take the eye mask sample of the same batch after the heating ends, repeat the above steps (5) and (6), and record the water vapor amount m generated by the blank test 空 ;

[0074] (8) Calculate the water vapor amount m generated by the measured steam hot compress eye mask sample = (m 样 -m 空 ) × F;

[0075] Wherein, under the temperature and humidity of T ℃ / U%, the absolute moisture mass m in the sealed box is calculated according to the formula:

[0076]

[0077] m - absolute moisture content in the sealed box (mg);

[0078] P s - saturated steam pressure of T ℃ water (Pa) (see Appendix B Table B.1 of GB / T 11605-2005);

[0079] U - relative humidity in the sealed box (%);

[0080] R w - gas constant of water vapor (461.52);

[0081] T - temperature in the sealed box (℃);

[0082]

[0083] 1000000 - mass conversion factor, kg converted into mg.

[0084] Example 2

[0085] For the detection device of the present application, if the volume of the box is too small, the oxygen in the box cannot meet the amount of oxygen required for the iron powder in the steam hot compress eye mask to heat for 20 min or the amount of oxygen consumed is too much. At the same time, after the humidity reaches 100% RH, part of the moisture begins to convert into liquid, causing the hygrothermograph to be unable to measure the actual amount of moisture generated by the steam hot compress eye mask, i.e., the absolute steam amount cannot be accurately determined.

[0086] Therefore, in order to verify whether the volume of the sealed box in the present application is appropriate, in this embodiment, 60 batches of steam hot compress eye masks of different brands were randomly selected, the heating body filler was accurately weighed, and then completely digested by microwave digestion. The iron powder concentration of the digestion solution was determined by inductively coupled plasma optical emission spectrometer (ICP-OES), and the iron content in 60 batches of steam hot compress eye masks of different brands was calculated. The results are shown in Table 1.

[0087] Table 1 Iron content in a pair of steam hot compress eye masks of 60 batches of different brands

[0088] Sample No. Iron content / g Sample No. Iron content / g Sample No. Iron content / g 1-1 2.89 1-21# 2.99 1-41 4.82 1-2 4.65 1-22 5.02 1-42 1.83 1-3 4.16 1-23 3.12 1-43 2.53 1-4 3.92 1-24 4.48 1-44 4.81 1-5 2.15 1-25 4.14 1-45 2.72 1-6 5.35 1-26 2.67 1-46 3.06 1-7 5.57 1-27 3.25 1-47 2.86 1-8 2.27 1-28 3.72 1-48 2.15 1-9 5.15 1-29 3.75 1-49 3.31 1-10 5.06 1-30 3.90 1-50 3.33 1-11 2.65 1-31 4.38 1-51 3.05 1-12 4.56 1-32 3.31 1-52 3.18 1-13 3.39 1-33 2.22 1-53 2.74 1-14 4.96 1-34 2.14 1-54 3.49 1-15 3.52 1-35 4.02 1-55 3.45 1-16 5.07 1-36 4.30 1-56 3.77 1-17 3.89 1-37 2.41 1-57 2.39 1-18 5.26 1-38 3.56 1-58 2.90 1-19 3.88 1-39 2.98 1-59 1.71 1-20 3.13 1-40 3.38 1-60 2.60

[0089] As can be seen from the results in Table 1, the iron content in the steam hot compress eye mask is 1.71-5.57 g, and the average iron content is 3.53 g. When the average iron content is 3.53 g, about 1.56 g of oxygen is required for the reaction. At a standard atmospheric pressure, 1 m 3 The mass of oxygen in the air is about 252 g. For a sealed box with a volume of 50±10 L, the steam hot compress eye mask reaction consumes 10%-25% of the oxygen in the sealed box. The air in the sealed box with a volume of 50±10 L can fully meet the oxygen requirement for the sample to heat for 20 min.

[0090] Using the detection device of the present application and the detection method, under the temperature and humidity environmental conditions of (20±1) ℃ and 55-60% RH, the water vapor mass, the amount of water vapor detected, and the actual amount of pure water added were compared for 100 μL, 200 μL, and 300 μL of pure water evaporation detection under 30, 40, 50, and 60 L sealed boxes. The results are shown in Table 2.

[0091] Table 2 Comparison of pure water evaporation test results of sealed boxes

[0092]

[0093] From the results of Table 2, it can be seen that when the same volume of 30L is sealed, the amount of water vapor detected is lower than the actual amount of water added in the evaporation test of 300μL pure water. The detection result of the humidity meter after 300μL pure water is evaporated in the 30L sealed box is close to 100%, indicating that the water vapor in the sealed box has reached saturation in this case, and 300μL of pure water can only partially evaporate into a gaseous state. Therefore, the 30L volume of the box cannot guarantee the accuracy of the detection result of the amount of water vapor, and does not meet the detection requirements. The 50±10L box is consistent with the actual amount of water added in the detection of the amount of water vapor of 100μL-300μL. The size of the box meets the requirements. If the size of the box is increased, on the one hand, the cost of the box material is increased, and the amount of water vapor remains the same. With the increase of the volume of the box, the humidity change will be smaller, and the smaller the humidity change, the greater the error. Therefore, considering the cost and error, it is unnecessary to increase the size of the box. The volume of the box is determined to be 50±10L.

[0094] Example 3

[0095] To further verify the accuracy of the results of using the above detection device and the detection method adopted thereby, in this embodiment, the detection device of the present application and the same water vapor detection method are used to detect the water vapor amount on the side of the face and the total water vapor amount generated by representative steam hot compress eye masks of different production enterprises and different models on the market. The sealed box of the detection device used has a volume of 50L. The difference between the detection device and the detection method for the total water vapor amount and the detection device and the detection method for the water vapor amount on the side of the face is that the sample for the total water vapor amount does not need to be fixed on the sample fixing module. During the detection process, the sample is directly hung at the center position in the sealed box so that the side of the face and the non-side of the face of the eye mask are in contact with the air in the sealed box. The water vapor amount is the total amount of water vapor generated on the side of the face and the non-side of the face. The detection results are shown in Table 3.

[0096] Table 3 Water vapor amount generated by 38 batches of steam hot compress eye masks

[0097]

[0098] Since the steam eye mask is used only on the side of the face during use, the total water vapor amount generated by the eye mask cannot represent the actual product performance during use, and the water vapor amount on the side of the face can better explain the performance of the product. According to the results in Table 3, it can be seen that the total water vapor amount generated by the above steam hot compress eye mask is obviously greater than the steam amount generated on the side of the face. Therefore, the detection device and method described in the present application can more accurately evaluate the performance of the water vapor amount generated by the steam hot compress eye mask product.

[0099] Example 4

[0100] In order to further investigate the difference between the present application and the prior art and the generated technical progress, in the present embodiment, 6 different brands of steam hot compress eye masks commonly seen in the market are selected, and the detection results of the steam amount generated by the device and detection method of the present application and the prior art for different brands of steam hot compress eye masks are specifically investigated, and the detection results are shown in Table 4.

[0101] Table 4 Comparison of detection results of different detection methods

[0102]

[0103] According to the results in Table 4, it can be seen that comparison 1 cannot guarantee that the water vapor is completely condensed in the cooling box, resulting in a large error in the measured water vapor amount, because the water vapor is condensed in the cooling box, and then the water vapor amount generated by the eye mask is obtained by the mass difference before and after the cooling box. The device and method of comparison 2 cannot guarantee that the water vapor generated by the eye is completely condensed on the glass cover, etc., thereby resulting in inaccurate results. In addition, since the detection device and method of comparison 1 and comparison 2 do not have a correction means, the detection results of the two methods have a large error, therefore, the detection results in comparison 1 and comparison 2 are significantly lower than the water vapor amount detected by the detection device and method of the present application.

[0104] In summary, the detection device and detection method of the present application can more accurately measure the water vapor amount on the surface side of the steam hot compress eye mask by designing the sample fixing device and the calibration component and cooperating with the corresponding detection method; and the designed detection device has a simple structure, low manufacturing cost, and simple operation, and is easy to popularize and standardize.

[0105] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A method for detecting the amount of water vapor generated by a steam hot compress eye mask, characterized by, The detection is performed by using a water vapor amount detection device, the water vapor amount detection device comprising a sealed box body, a sample fixing module, a temperature control hot plate module and a temperature and humidity monitoring module arranged in the sealed box body; wherein the front side of the sealed box body is movably connected with a box door, the temperature control hot plate module comprises a temperature control hot plate, the sample fixing module comprises a lower layer pressing plate and an upper layer pressing plate for fixing an eye patch, and a pressing device for pressing the lower layer pressing plate and the upper layer pressing plate, a pair of upwardly open grooves are symmetrically arranged on the two sides of the lower layer pressing plate, a pair of through holes matching the grooves are arranged on the upper layer pressing plate, and the size of the grooves is greater than the size of the outer frame of the filling part of the eye patch and less than the size of the outer frame of the outer bag of the heat generating body part of the eye patch; The detection method comprises the following steps: (1) detecting the sealing property of the sealed box body; (2) determining the calibration coefficient of the detection device: adding a certain amount of pure water on the temperature control hot plate, recording the temperature and humidity change before and after the evaporation of the pure water, calculating the water vapor amount generated by the evaporation of the pure water collected by the sealed box body, and calculating the ratio of the mass of the added pure water and the water vapor amount collected by the sealed box body, which is the calibration coefficient F; (3) The eye patch sample is fixed on the sample fixing module with the sample side facing up, and then the sample fixing module is placed in the sealed box. The temperature and humidity of the sealed box before and after the reaction of the eye patch are recorded, and the amount of water vapor generated by the eye patch is calculated 样 ; (4) Blank test: Take the same batch of eye mask samples after the fever ends, repeat step (3), and record the amount of water vapor generated by the blank test m 空 ; (5) Calculate the amount of water vapor generated by the measured steam eye mask sample m = (m 样 -m 空 ) x F.

2. The detection method according to claim 1, characterized in that, The pressing device comprises a pair of fixed supports and locking bolts arranged on the two sides of the lower layer pressing plate, the fixed support comprises a top plate, a bottom plate and a vertical plate connecting the outer edges of the top plate and the bottom plate, the distance between the top plate and the bottom plate is greater than the total thickness of the lower layer pressing plate and the upper layer pressing plate, the two sides of the lower layer pressing plate are arranged on the bottom plate, a screw hole matching the locking bolt is arranged on the top plate, and the locking bolt is in abutment with the upper layer pressing plate through the screw hole.

3. The method of claim 1, wherein The sealed box body is surrounded by an upper side plate, a lower side plate, a left side plate, a right side plate, a rear side plate and a front box door, the left side edge of the box door is hingedly connected to the left side plate, and the right side edge of the box door is connected to the right side plate through a lock.

4. The detection method according to claim 3, characterized in that, Sealing strips are installed at the front edges of the upper side plate, the lower side plate, the left side plate and the right side plate.

5. The method of claim 1, wherein The temperature and humidity monitoring module comprises a temperature and humidity display screen and a temperature and humidity probe externally arranged on the temperature and humidity display screen, and the temperature and humidity probe is electrically connected to the temperature and humidity display screen.

6. The detection method according to claim 5, characterized in that, The temperature and humidity monitoring module is arranged on the side of the sealed box body away from the box door.

7. The method of claim 1, wherein, A gas inlet and outlet valve and a vacuum pressure gauge for testing the pressure in the sealed box body are installed on the top of the sealed box body.

8. The method of claim 1, wherein, The volume of the sealed box body is 50±10L.

9. The method of claim 1, wherein, The detection method comprises the following steps: (1) checking the sealing property of the sealed box body; (2) placing the detection device and the minimum packaging of the eye patch sample in a (20±1)℃ / 20%-60%RH windless environment for at least 2h, and keeping the box door of the sealed box body open during the balancing process; (3) with micro-injection needle suction 100 ~ 300 μL pure water, pure water evenly point-shaped coated on the surface of the temperature-controlled hot plate, record the temperature T1 and relative humidity U1 in the sealed box, through T1 and U1 calculate the initial absolute content of water vapor m1 in the sealed box; open temperature-controlled hot plate switch, set the temperature-controlled hot plate surface temperature at 45 ℃ ~ 55 ℃, close the door, open the timer; 20 min after the pure water completely evaporated, record the temperature T2 and relative humidity U2 in the box again, calculate the absolute content of moisture m2 in the sealed box, the calibration coefficient F = m 纯水 / (m2-m1), m 纯水 is the known mass of pure water added; (4) opening the box door, closing the temperature control hot plate, and balancing for 20min; (5) Take one pair of eyeshade samples, divide the sample into two parts along the central symmetrical line of the sample, take out the sample fixing module in the sealed box, place the two samples on the grooves of the sample fixing module respectively, ensure that the side of the eyeshade to be attached faces upward, and the filling part of the eyeshade is located between the groove and the through hole, and then press the upper and lower press plates to fix the sample; (6) Put the sample fixing module containing the sample into the center of the bottom of the sealed box, close the box door, open the timer, record the temperature T3 and relative humidity U3 in the sealed box, and calculate the absolute moisture content m3 in the sealed box; record the temperature T4 and relative humidity U4 in the sealed box again after the sample generates heat for 20 min, calculate the absolute moisture content m4 in the sealed box, and the water vapor amount m generated by the eyeshade sample collected in the sealed box 样 = m4-m3; (7) Blank test: Take the same batch of samples with fever, repeat step (5) and step (6), record the amount of water vapor generated by the blank test m 空 ; (8) The amount of water vapor generated by the measured eye patch sample m = (m 样 -m 空 ) x F.

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