Museum showcase microenvironment positive pressure type humidity regulation and control equipment

Abstract

The invention relates to a museum showcase microenvironment positive pressure type humidity regulation and control device applied to the field of showcase humidity regulation and control, through cooperative operation of a positive pressure type dual-mode semiconductor-electrolyte membrane composite dehumidification system and an intelligent humidification system, the regulation and control precision of humidity in a showcase is effectively maintained, efficient and stable control over the showcase environment is achieved, and the service life of the showcase is prolonged. The humidity regulation and control equipment has low requirements on the sealing performance of the showcase, is particularly suitable for the old showcase which is not subjected to sealing modification, further effectively reduces the cost of regularly maintaining the sealing performance of the showcase, in addition, through the arrangement of a plurality of split cotton swabs, after the equipment is used for a period of time, the cotton swabs can be adjusted to be unfolded in a layered mode, and the practicability of the equipment is improved. The water absorption area of the cotton swab is increased, the cotton swab can absorb water from the inner layer, the problem that water delivery performance is reduced due to water scaling is effectively relieved, and compared with the prior art, the interval for replacing the cotton swab can be effectively prolonged, and meanwhile the utilization rate of the cotton swab is effectively increased.

Description

Technical Field

[0001] The present invention relates to a positive pressure humidity control device, in particular to a museum showcase micro-environment positive pressure humidity control device applied to the showcase humidity control field. Background Art

[0002] In the field of cultural relic preservation, the concept of preventative conservation has become an industry consensus. Its core principle is to provide a "stable and clean" storage environment for cultural relics, thereby minimizing or delaying changes in their physical and chemical properties, thereby ensuring their long-term preservation. A "stable" environment specifically refers to precisely controlling environmental factors such as temperature and humidity to ensure these parameters remain stable within an appropriate range, avoiding significant fluctuations that could damage the artifacts. Humidity, a key factor affecting the quality of cultural relic preservation, plays a crucial role in the preservation of most cultural relic materials. Therefore, when controlling the temperature and humidity of a cultural relic storage environment, humidity control should be the primary consideration.

[0003] However, the central air-conditioning systems currently commonly used in museums mainly focus on temperature regulation, and there is a relative lack of effective means for controlling humidity. For example, the Chinese patent specification with publication number CN115644644A proposes a constant temperature display cabinet for museum display.

[0004] Furthermore, humidity control within the microenvironment of a museum's glass display case is generally only possible if the sealant meets the national standard (GBT36110-2018, "Sealing Performance and Testing of Cultural Relic Display Cases"). If this standard is not met, the display case will need to be retrofitted to improve its sealing performance (by adding sealant, sealing strips, etc.). This involves considerable professional expertise and cannot be solved simply by applying glue or replacing sealing strips. After the retrofit is complete, retesting is required according to the national standard's testing methods, and this process must be repeated until the sealant meets the standard. Prior to conducting the sealing test, the museum's relevant departments must be contacted to facilitate the removal of the artifacts from the display case. This requires multiple layers of application from various museum departments, ultimately leading to the removal of the artifacts. This is time-consuming, labor-intensive, and costly process, especially for older display cases, which require periodic sealant testing.

[0005] Therefore, a device or method is proposed that does not require frequent test of the sealing performance of the display cabinet and can also be used to control the humidity of the museum display cabinet when there are certain defects in the sealing performance of the display cabinet. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the cost of humidity control using existing large-scale constant humidity equipment is too high, and the sealing requirements of the display cabinets are high during use. For some old display cabinets, additional sealing modifications are required, which is very costly.

[0007] In order to solve the above problems, the present invention provides a positive pressure humidity control device for a microenvironment of a museum display cabinet, comprising a barometer installed in the display cabinet and a constant humidity machine installed at the bottom of the display cabinet, the barometer is connected to the constant humidity machine signal, the constant humidity machine comprises a lower U-shaped shell and an upper U-shaped shell fixedly connected to the upper ends of the left and right edges of the lower U-shaped shell, a plurality of evenly distributed exhaust holes are drilled at the rear end of the lower U-shaped shell and the left and right ends of the upper U-shaped shell, a control panel, an antenna and a water supply port are fixedly installed at the front end of the lower U-shaped shell, a bottom water tank is fixedly connected to the upper end of the lower U-shaped shell near the front, the water supply port is communicated with the bottom water tank, a plurality of liquid level sensors are installed on the upper end of the bottom water tank, and the plurality of liquid level sensors are installed on the upper end of the bottom water tank. The sensor is located between the electrolyte membrane system and the power module. The upper end of the bottom water tank is fixedly connected to the filter, two variable frequency fans, a semiconductor refrigeration unit, an evaporative humidification unit, an electrolyte membrane system and a power module in sequence. The two variable frequency fans are arranged side by side, and the filter, variable frequency fan, semiconductor refrigeration unit, evaporative humidification unit and electrolyte membrane system are connected in sequence. The lower end of the semiconductor refrigeration unit is connected to the bottom water tank. The upper end of the semiconductor refrigeration unit is fixedly connected to a hollow heat absorbing plate. The rear end of the lower U-shaped shell is fixedly connected to an air outlet and a temperature and humidity sensor. An exhaust pipe is fixedly connected between the electrolyte membrane system and the mouth of the air outlet. The detection head of the temperature and humidity sensor extends into the display cabinet. A drainage unit is fixedly installed at the upper rear end of the lower U-shaped shell, and a humidification unit is arranged inside the evaporative humidification unit. The humidification unit and the drainage unit both include a plurality of vertically placed cotton swabs, and the cotton swabs are arranged in a split type.

[0008] In the above-mentioned museum display cabinet micro-environment positive pressure humidity control equipment, the coordinated operation of the positive pressure dual-mode semiconductor-electrolyte membrane composite dehumidification and the intelligent humidification system effectively maintains the control accuracy of the humidity in the display cabinet, and realizes efficient and stable control of the display cabinet environment. In addition, the use of this humidity control equipment has low requirements for the sealing of the display cabinet, which is particularly suitable for old display cabinets that have not been sealed, thereby effectively reducing the cost of regular maintenance of the sealing of the display cabinet.

[0009] As a further improvement of the present application, a circulating water tank is fixedly connected to the upper end of the bottom water tank. The circulating water tank and the filter are arranged side by side. Liquid guide pipes are fixedly connected between the hollow heat absorbing plate and the circulating water tank, between the hollow heat absorbing plate and the drainage unit, and between the circulating water tank and the drainage unit. A water pump is installed on the liquid guide pipe between the circulating water tank and the drainage unit.

[0010] As a further improvement of the present application, the drainage unit includes a water collecting tray fixedly connected to the upper end of the lower U-shaped outer shell, a cotton swab rack placed on the water collecting tray, a heat-conducting copper busbar arranged parallel to the cotton swab rack, and two exhaust fans arranged parallel to the heat-conducting copper busbar. An overflow pipe is also fixedly connected between the water collecting tray and the bottom water tank, and the overflow pipe connects the water collecting tray and the bottom water tank. The exhaust ends of the two exhaust fans face the heat-conducting copper busbar. Multiple groups of vertical corresponding sockets are opened on the cotton swab rack, and multiple cotton swabs are respectively inserted into the multiple groups of sockets and fixedly penetrate the water collecting tray and extend into the inner water collecting tray.

[0011] As a further improvement of the present application, the humidifying unit also includes a cotton swab rack with multiple groups of sockets, and the cotton swabs on multiple humidifying units are movable through the lower end of the evaporative humidifying unit, the upper end of the bottom water tank and extend into the interior of the bottom water tank.

[0012] As a further improvement of the present application, the overflow pipe is in a flat L-shape, and the vertical end of the overflow pipe is connected to the outer end of the bottom water tank near the top.

[0013] As a further improvement of the present application, the cotton swab includes a central tampon, multiple interlayer tampon wrapped around the central tampon, multiple outer tampon wrapped around the outer ends of the multiple interlayer tampon, and multiple cotton rings that are jointly sleeved outside the multiple outer tampon. The multiple interlayer tampon are respectively staggered with the multiple outer tampon, and the multiple cotton rings correspond to and are fixed to the multiple sockets in the same group.

[0014] As a further improvement of the present application, two electromagnetic rings distributed upper and lower are fixedly embedded in the inner wall of the socket, and magnetic core blocks are fixedly embedded in the outer cotton strips and the interlayer cotton strips. The multiple magnetic core blocks in the multiple outer cotton strips have the same height and correspond to one of the electromagnetic rings, and the multiple magnetic core blocks in the multiple interlayer cotton strips have the same height and correspond to the other electromagnetic ring. When energized, the electromagnetic rings generate magnetic attraction on the magnetic core blocks.

[0015] As a further improvement of the present application, the cotton bundle loop is an elastic annular bag structure, and is saturated with air. When the electromagnetic ring is not energized, multiple outer cotton strips and multiple interlayer cotton strips form a complete annular structure.

[0016] In summary, through the coordinated operation of the positive pressure dual-mode semiconductor-electrolyte membrane composite dehumidification and the intelligent humidification system, the humidity control accuracy in the display cabinet is effectively maintained, and efficient and stable control of the display cabinet environment is achieved. In addition, the use of this humidity control equipment has low requirements for the sealing of the display cabinet, and is particularly suitable for old display cabinets that have not been sealed. It is thereby effective in reducing the cost of regular maintenance of the sealing of the display cabinet. In addition, through the setting of multiple split cotton swabs, after a period of use, the cotton swabs can be adjusted to be spread out in layers. On the one hand, the water absorption area of ​​the cotton swab is increased, and on the other hand, the cotton swab can absorb water from the inner layer, thereby effectively alleviating the problem of decreased water transmission performance caused by water scaling. Compared with the existing technology, the interval for replacing the cotton swabs can be effectively extended, while effectively improving the utilization rate of the cotton swabs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a main schematic diagram of the first embodiment of the present application; Figure 2 A perspective view of a constant humidity machine according to a first embodiment of the present application; Figure 3 This is a perspective view of the interior of the humidistat according to the first embodiment of the present application from a front perspective; Figure 4 This is a perspective view of the interior of the humidistat according to the first embodiment of the present application as viewed from a rear angle; Figure 5 A top view of a humidistat according to a first embodiment of the present application; Figure 6 This is a three-dimensional diagram of the constant humidity machine of the first embodiment of the present application after removing the upper and lower U-shaped shells; Figure 7 This is a three-dimensional diagram of a cotton swab holder according to a first embodiment of the present application; Figure 8 This is a top view of a cotton swab holder according to a second embodiment of the present application; Figure 9 This is an exploded view of a split cotton swab according to a second embodiment of the present application; Figure 10 This is a top view of a split cotton swab according to a second embodiment of the present application; Figure 11 This is a perspective schematic diagram of the end portion of a split cotton swab according to a second embodiment of the present application; Figure 12 This is a top view of the split cotton swab after layer expansion according to the second embodiment of the present application; Figure 13 This is a three-dimensional schematic diagram of the layered and extended rear end portion of a split cotton swab according to the second embodiment of the present application.

[0018] Description of the numbers in the figure: 11 lower U-shaped shell, 12 upper U-shaped shell, 101 control panel, 102 antenna, 103 water supply port, 104 exhaust hole, 105 air outlet, 106 temperature and humidity sensor, 2 power modules, 31 circulating water tank, 32 liquid guide tube, 33 water pump, 41 semiconductor refrigeration unit, 42 hollow heat absorption plate, 501 bottom water tank, 502 overflow pipe, 51 filter, 52 variable frequency fan, 53 evaporation and humidification unit, 54 electrolyte membrane system, 55 exhaust duct, 61 exhaust fan, 62 thermal copper busbar, 63 cotton swab, water collection tray 64 water collection tray, 601 cotton swab rack, 602 electromagnetic ring, 603 magnetic core block, 604 jack, 631 center cotton sliver, 632 interlayer cotton sliver, 633 outer cotton sliver, 634 cotton ring. DETAILED DESCRIPTION

[0019] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0020] The first implementation method: Figure 1-2 The present invention shows a positive pressure humidity control device for a museum display cabinet microenvironment, comprising a barometer installed in the display cabinet and a humidistat installed at the bottom of the display cabinet. The barometer is connected to the humidistat by signal, and the air pressure in the display cabinet can be monitored in real time through the barometer. When performing humidity control, the variable frequency fan 52 inside the humidistat continuously delivers purified constant humidity air to the display cabinet, forming a dynamic positive pressure difference of 0.8-1.2 Pa, thereby effectively blocking external environmental disturbances. At the same time, under the action of the positive pressure difference, the requirements for the sealing of the display cabinet can be effectively reduced, so that some old display cabinets can be equipped with this device without sealing modification, effectively reducing the sealing maintenance cost of the old display cabinets.

[0021] like Figure 3-5The constant humidity machine includes a lower U-shaped shell 11 and an upper U-shaped shell 12 fixedly connected to the upper ends of the left and right edges of the lower U-shaped shell 11. The rear end of the lower U-shaped shell 11 and the left and right ends of the upper U-shaped shell 12 are each provided with a plurality of evenly distributed exhaust holes 104. A control panel 101, an antenna 102 and a water supply port 103 are fixedly installed at the front end of the lower U-shaped shell 11. The upper end of the side of the lower U-shaped shell 11 near the front is fixedly connected to a bottom water tank 501. The water supply port 103 is communicated with the bottom water tank 501. A plurality of liquid level sensors are installed at the upper end of the bottom water tank 501. The plurality of liquid level sensors are located between the electrolyte membrane system 54 and the power module 2 , multiple liquid level sensors are selected as three, one of which is used for lower water level monitoring, for water shortage reminder, so as to facilitate timely water replenishment in the bottom water tank 501, and the other two are for upper water level monitoring, one of which is spare. When one is broken, it is not easy to affect the detection of the liquid level. When the upper water level sensor is triggered, it means that the water volume is full, and it can be reminded to stop adding water. At the same time, in the dehumidification mode, due to the cooling of the semiconductor refrigeration unit 41, the liquid after the moisture in the air is condensed also flows into the bottom water tank 501. When the liquid level rises and the upper liquid level sensor is triggered, the control panel 101 can control the dehumidification module to perform automatic dehumidification without pipelines.

[0022] The bottom water tank 501 can be replenished with water through the water replenishment port 103 so that there is always enough water in it to support normal humidification work. The upper end of the bottom water tank 501 is fixedly connected with a filter 51, two variable frequency fans 52, a semiconductor refrigeration unit 41, an evaporation and humidification unit 53, an electrolyte membrane system 54 and a power module 2 in sequence. The two variable frequency fans 52 are arranged side by side, and the filter 51, the variable frequency fan 52, the semiconductor refrigeration unit 41, the evaporation and humidification unit 53 and the electrolyte membrane system 54 are connected in sequence, and the lower end of the semiconductor refrigeration unit 41 is connected to the bottom water tank 501. The upper end of the semiconductor refrigeration unit 41 is fixedly connected with a hollow heat absorbing plate 42. The rear end of the lower U-shaped shell 11 An air outlet 105 and a temperature and humidity sensor 106 are fixedly connected. An exhaust pipe 55 is fixedly connected between the electrolyte membrane system 54 and the mouth of the air outlet 105. A drainage unit is fixedly installed at the upper rear end of the lower U-shaped shell 11. A humidification unit is provided inside the evaporative humidification unit 53. Both the humidification unit and the drainage unit include a plurality of vertically placed cotton swabs 63. The temperature and humidity sensor 106 can monitor the humidity of the current environment, so that the device can switch to humidifying or dehumidifying the air in real time according to the humidity, thereby inputting constant humidity air into the display cabinet to maintain a stable humidity environment in the display cabinet, reduce the range of humidity fluctuation, and thus make the cultural relics inside less likely to be damaged by humidity fluctuations. When the temperature and humidity sensor 106 detects that the current ambient humidity is lower than the target value set by the constant humidity machine, the humidification mode needs to be turned on. First, the variable frequency fan 52 works to suck the outside air into the filter 51 along the exhaust hole 104. After being removed by the filter 51, the air passes through the semiconductor refrigeration unit 41 and enters the evaporative humidification unit 53. The evaporative humidification unit 53 starts to work, gradually increasing the temperature inside it and gradually evaporating the water absorbed in the internal cotton swab 63 to produce water vapor. The evaporative humidification unit 53 adjusts the speed of the variable frequency fan 52 according to the target humidity value and the humidity value of the current display cabinet environment detected by the temperature and humidity sensor 106, thereby blowing the water vapor in the cotton swab 63 into the electrolyte membrane system 54, and then enters the display cabinet along the exhaust pipe 55, completing the humidification of the air and making the air input into the display cabinet constant humidity.

[0023] It is worth noting that in the humidification mode, the semiconductor refrigeration unit 41 and the electrolyte membrane system 54 only serve as water vapor circulation channels, and both are inoperative.

[0024] When the temperature and humidity sensor 106 detects that the current ambient humidity is higher than the target value set by the constant humidity machine, the dehumidification mode needs to be turned on. For example, if the current ambient humidity is 80% RH and the target is 50% RH, the air needs to be dehumidified to maintain the humidity of the air input into the display cabinet at 50% RH.

[0025] At this time, the variable frequency fan 52 draws outside air into the filter 51 through the exhaust hole 104. After being filtered by the filter 51 to remove impurities, it enters the semiconductor refrigeration unit 41. At this time, the semiconductor refrigeration system is in operation. By controlling the power and operating time of the semiconductor, the moisture carried by the air in the air duct is condensed, thereby gradually drying the air and approaching the target humidity value. At this time, the condensed liquid water flows into the bottom water tank 501. The dried air then passes through the evaporation and humidification unit 53 and enters the electrolyte membrane system 54. The electrolyte membrane in the electrolyte membrane system 54 separates the water molecules in the dried air into hydrogen ions and oxygen at the anode. The hydrogen ions pass through the electrolyte membrane to the cathode side. At the cathode side, the hydrogen ions react with the oxygen in the air to produce water molecules, which are discharged into the bottom water tank, thereby further achieving a fine dehumidification effect. Finally, the air dehumidified to the target humidity value is discharged from the electrolyte membrane system 54 into the exhaust duct 55 and enters the interior of the display cabinet through the air outlet 105, achieving the effect of dehumidifying the input air and maintaining a constant humidity of the air input into the display cabinet.

[0026] It is worth noting that in dehumidification mode, the evaporative humidification system does not work, it only provides a circulation channel for the air after preliminary drying.

[0027] like Figure 6The upper end of the bottom water tank 501 is also fixedly connected to a circulating water tank 31, and the circulating water tank 31 and the filter 51 are arranged side by side. A liquid guide pipe 32 is fixedly connected between the hollow heat absorbing plate 42 and the circulating water tank 31, between the hollow heat absorbing plate 42 and the drainage unit, and between the circulating water tank 31 and the drainage unit. A water pump 33 is installed on the liquid guide pipe 32 between the circulating water tank 31 and the drainage unit. The drainage unit includes a water collecting tray 64 fixedly connected to the upper end of the lower U-shaped shell 11, a cotton swab rack 601 placed on the water collecting tray 64, a heat-conducting copper bus 62 arranged parallel to the cotton swab rack 601, and two exhaust fans 6 arranged parallel to the heat-conducting copper bus 62. 1. An overflow pipe 502 is fixedly connected between the water collecting pan 64 and the bottom water tank 501, and the overflow pipe 502 communicates with the water collecting pan 64 and the bottom water tank 501. The overflow pipe 502 is a flat L-shape, and the vertical end of the overflow pipe 502 is communicated with the outer end of the bottom water tank 501 near the top, wherein the overflow pipe 502 can transport excess water in the bottom water tank 501 to the water collecting pan 64. The exhaust ends of the two exhaust fans 61 face the heat-conducting copper bar 62. A plurality of groups of vertical corresponding jacks 604 are drilled on the cotton swab rack 601. A plurality of cotton swabs 63 are respectively inserted into the plurality of groups of jacks 604 and fixedly penetrate the water collecting pan 64 and extend into the water collecting pan 64.

[0028] like Figure 7 The humidifying unit also includes a cotton swab rack 601 with multiple groups of sockets 604. The cotton swabs 63 on multiple humidifying units are movable through the lower end of the evaporative humidifying unit 53, the upper end of the bottom water tank 501 and extend into the interior of the bottom water tank 501.

[0029] In summer, the air contains a high amount of moisture, which causes more condensed water to enter the bottom water tank 501 during dehumidification. The liquid level sensor detects that the liquid level in the bottom water tank 501 has risen, and some of the water overflows into the water collection tray 64 through the overflow pipe 502. Drainage is required. At this time, the lower U-shaped shell 11 controls the water pump 33 to start, pumping the coolant in the circulating water tank 31 into the hollow heat-absorbing plate 42, thereby being heated by the heat dissipation end of the semiconductor refrigeration unit 41. After heating, the coolant is transferred to the heat-conducting copper bus 62 through the liquid guide pipe 32, causing the heat-conducting copper bus 62 to heat up. At the same time, the multiple cotton swabs 63 in the drainage unit can absorb the overflow into the water collection tray 64. At this time, the two exhaust fans 61 are working, and the air blown out by them flows through the heat-conducting copper bar 62 and is heated to become hot air. The hot air then acts directly on the cotton swab 63, thereby converting the water absorbed by the cotton swab 63 into water vapor and blowing it out into the air along the exhaust hole 104, realizing the automatic water-free drainage function, so that the condensed water generated during dehumidification is unlikely to affect the stability of the liquid level in the bottom water tank 501, thereby maintaining the stability of the humidity control in the display cabinet. At the same time, due to the positive pressure state in the display cabinet, even if the sealing of the old display cabinet is poor, the increased humidity caused by the water discharged into the air by the cotton swab 63 is unlikely to affect the ambient humidity in the display cabinet.

[0030] In summary, through the coordinated operation of the positive pressure dual-mode semiconductor-electrolyte membrane composite dehumidification and the intelligent humidification system, the humidity control accuracy in the display cabinet is effectively maintained, and efficient and stable control of the display cabinet environment is achieved. In addition, the use of this humidity control equipment has low requirements for the sealing of the display cabinet, which is particularly suitable for old display cabinets that have not been sealed, thereby effectively reducing the cost of regular maintenance of the display cabinet's sealing.

[0031] The second implementation method: This embodiment further improves the cotton swab on the basis of the first embodiment, and the rest of the embodiment remains the same as the first embodiment.

[0032] Figure 8-9 As shown, the cotton swab 63 is a split arrangement, and the cotton swab 63 includes a central cotton strip 631, a plurality of interlayer cotton strips 632 wrapped around the central cotton strip 631, a plurality of outer cotton strips 633 wrapped around the outer ends of the plurality of interlayer cotton strips 632, and a plurality of cotton loops 634 that are jointly sleeved outside the plurality of outer cotton strips 633. The plurality of interlayer cotton strips 632 are respectively staggered with the plurality of outer cotton strips 633, and the plurality of cotton loops 634 are respectively corresponding to and fixed with the plurality of sockets 604 of the same group, wherein the cotton loops 634 are mainly used to space the inner wall of the socket 604 from the cotton swab 63, so that the cotton swab 63 has a certain space for subsequent layered expansion.

[0033] like Figure 10-11 Two electromagnetic rings 602 distributed up and down are fixedly embedded on the inner wall of the socket 604, and magnetic core blocks 603 are fixedly embedded in the outer cotton strips 633 and the interlayer cotton strips 632. The multiple magnetic core blocks 603 in the multiple outer cotton strips 633 have the same height and correspond to one of the electromagnetic rings 602. The multiple magnetic core blocks 603 in the multiple interlayer cotton strips 632 have the same height and correspond to the other electromagnetic ring 602. After power is turned on, the electromagnetic rings 602 generate magnetic attraction on the magnetic core blocks 603. The cotton ring 634 is an elastic annular capsule structure, and the cotton ring 634 is saturated with air.

[0034] It is worth noting that elastic threads are connected between the multiple magnetic core blocks 603 and the central cotton strip 631, and the elastic threads are in a straight state, so that when not subjected to external magnetic attraction, the cotton swab 63 is not easy to fall apart and can maintain its overall state.

[0035] When the electromagnetic ring 602 is not energized, the multiple outer cotton strips 633 and the multiple interlayer cotton strips 632 form a complete annular structure. At this time, the cotton swab 63 is in a closed overall shape. When it absorbs water, the outer cotton strips 633 of the outer layer absorb water first and then gradually transfer water to the interlayer cotton strips 632 and the central cotton strip 631. At this time, its use is basically the same as the first embodiment. After a period of use, due to the influence of water quality, the cotton swab 63 becomes scaled and its water absorption becomes poor. Figure 12-13, it is possible to control multiple electromagnetic rings 602 corresponding to the magnetic core blocks 603 inside the outer cotton strips 633 to be energized, thereby causing multiple outer cotton strips 633 to be adsorbed and separated from the inner interlayer cotton strips 632. At this time, the outer wall of the interlayer cotton strips 632 is exposed, and a gap is generated between the two outer cotton strips 633. Water can directly enter the interlayer cotton strips 632 through the gap, so that the outer wall of the interlayer cotton strips 632 and the inner wall of the outer cotton strips 633 can absorb water, thereby increasing the water absorption area. In this design, the outer cotton strips 633 located on the outside have more water. After the dirt is removed, it is peeled off, so that the interlayer cotton strips 632 with better water absorption can directly absorb water, thereby effectively compensating for the damaged water absorption of the cotton swab 63. After a period of time, another electromagnetic ring 602 can be controlled to energize again to separate the multiple interlayer cotton strips 632 from the central cotton strip 631, so that the damaged water absorption is improved again. Compared with the integral cotton swab 63 in the first embodiment, the effective use time of the cotton swab 63 as a whole can be effectively extended, the replacement frequency is reduced, the utilization rate of the cotton swab 63 is improved, and a certain effect of reducing the use cost can be achieved.

[0036] It is worth noting that for the split cotton swab 63, the electromagnetic ring 602 is embedded in the inner wall of the socket 604, so it can be reused, and the cotton ring 634 is only sleeved on the outside of the cotton swab 63, which can also be reused to reduce the cost of the split cotton swab.

[0037] Through the setting of multiple split cotton swabs, this device can adjust the cotton swabs to be spread out in layers after being used for a period of time. On the one hand, it increases the water absorption area of ​​the cotton swabs, and on the other hand, it enables the cotton swabs to absorb water from the inner layer, thereby effectively alleviating the problem of decreased water permeability caused by water scaling. Compared with the existing technology, it can effectively extend the interval for replacing cotton swabs and effectively improve the utilization rate of cotton swabs.

[0038] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A positive pressure humidity control device for a museum display cabinet microenvironment, characterized by: The invention comprises a barometer installed in the display cabinet and a constant humidity machine installed at the bottom of the display cabinet, wherein the barometer is connected to the constant humidity machine by signal, and the constant humidity machine comprises a lower U-shaped shell (11) and an upper U-shaped shell (12) installed at the upper ends of the left and right edges of the lower U-shaped shell (11), a bottom water tank (501) is installed at the upper end of the side close to the front of the lower U-shaped shell (11), and the upper end of the bottom water tank (501) is sequentially installed with a filter (51) connected to each other, two variable frequency fans (52) arranged side by side, a semiconductor refrigeration unit (41), an evaporative humidification unit, and a cooling fan. element (53), an electrolyte membrane system (54) and a power module (2), and the lower end of the semiconductor refrigeration unit (41) is communicated with the bottom water tank (501), the upper end of the semiconductor refrigeration unit (41) is fixedly connected to a hollow heat absorbing plate (42), the rear end of the lower U-shaped shell (11) is provided with an air outlet (105) and a temperature and humidity sensor (106), an exhaust pipe (55) is connected between the electrolyte membrane system (54) and the mouth of the air outlet (105), and the detection head of the temperature and humidity sensor (106) extends into the display cabinet; A drainage unit is installed at the upper rear end of the lower U-shaped housing (11), and a humidifying unit is provided inside the evaporative humidifying unit (53). Both the humidifying unit and the drainage unit include a plurality of vertically placed cotton swabs (63).

2. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 1, characterized in that: A plurality of evenly distributed exhaust holes (104) are provided at the rear end of the lower U-shaped housing (11) and at both left and right ends of the upper U-shaped housing (12). A control panel (101), an antenna (102), and a water supply port (103) are fixedly mounted at the front end of the lower U-shaped housing (11). The water supply port (103) is in communication with the bottom water tank (501).

3. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 1, characterized in that: A plurality of liquid level sensors are installed at the upper end of the bottom water tank (501), and the plurality of liquid level sensors are located between the electrolyte membrane system (54) and the power module (2). A circulating water tank (31) is also fixedly connected to the upper end of the bottom water tank (501), and the circulating water tank (31) and the filter (51) are arranged side by side. A liquid guide tube (32) is fixedly connected between the hollow heat absorbing plate (42) and the circulating water tank (31), between the hollow heat absorbing plate (42) and the drainage unit, and between the circulating water tank (31) and the drainage unit. A water pump (33) is installed on the liquid guide tube (32) located between the circulating water tank (31) and the drainage unit.

4. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 3, characterized in that: The drainage unit comprises a water collecting pan fixedly connected to the upper end of the lower U-shaped shell (11), a cotton swab rack (601) placed on the water collecting pan, a heat-conducting copper busbar (62) arranged in parallel with the cotton swab rack (601), and two exhaust fans (61) arranged in parallel with the heat-conducting copper busbar (62). An overflow pipe (502) is also fixedly connected between the water collecting pan and the bottom water tank (501), and the overflow pipe (502) communicates with the water collecting pan and the bottom water tank (501). The exhaust ends of the two exhaust fans (61) face the heat-conducting copper busbar (62). The cotton swab rack (601) is provided with a plurality of groups of vertical corresponding jacks (604). The plurality of cotton swabs (63) are respectively inserted into the plurality of groups of jacks (604) and fixedly penetrate the water collecting pan and extend into the water collecting pan.

5. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 4, characterized in that: The humidifying unit also includes a cotton swab rack (601) with multiple groups of sockets (604), and multiple cotton swabs (63) on the humidifying unit are movable through the lower end of the evaporative humidifying unit (53), the upper end of the bottom water tank (501) and extend into the interior of the bottom water tank (501).

6. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 5, characterized in that: The overflow pipe (502) is in a flat L-shape, and the vertical end of the overflow pipe (502) is in communication with the outer end of the bottom water tank (501) near the top.

7. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 1, characterized in that: The cotton swab (63) comprises a central cotton strip (631), a plurality of interlayer cotton strips (632) wrapped around the central cotton strip (631), a plurality of outer cotton strips (633) wrapped around the outer ends of the plurality of interlayer cotton strips (632), and a plurality of cotton loops (634) collectively sleeved around the plurality of outer cotton strips (633). The plurality of interlayer cotton strips (632) are respectively offset from the plurality of outer cotton strips (633), and the plurality of cotton loops (634) are respectively corresponding to and fixed to a plurality of jacks (604) in the same group.

8. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 7, characterized in that: Two electromagnetic rings (602) distributed up and down are fixedly embedded in the inner wall of the jack (604); magnetic core blocks (603) are fixedly embedded in the outer cotton strips (633) and the interlayer cotton strips (632); the multiple magnetic core blocks (603) in the multiple outer cotton strips (633) are of the same height and correspond to one of the electromagnetic rings (602); the multiple magnetic core blocks (603) in the multiple interlayer cotton strips (632) are of the same height and correspond to the other electromagnetic ring (602); and when energized, the electromagnetic rings (602) generate magnetic attraction on the magnetic core blocks (603).

9. The positive pressure humidity control device for a museum display cabinet microenvironment according to claim 8, characterized in that: The cotton bundle ring (634) is an elastic annular bag structure, and the cotton bundle ring (634) is saturated with air. When the electromagnetic ring (602) is not energized, the multiple outer cotton strips (633) and the multiple interlayer cotton strips (632) form a complete annular structure.

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