A protection device for rigid enclosures and a rigid air conditioning device

Abstract

The application relates to a protection device of a rigid enclosure, which comprises a shell and a partition plate arranged in the shell and separating the shell into a first space and a second space which are communicated through a passage in the bottom of the shell; wherein the first space is communicated with the atmosphere; the second space is communicated with the rigid enclosure; the bottom of the shell is provided with a liquid, and the liquid level is higher than the height of the passage. The protection device is installed on the rigid enclosure, and the air pressure balance in the rigid enclosure can be ensured. The protection device has the advantages of simple structure, small space occupation and no energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of storage and insect killing, and in particular to a protection device for a rigid enclosure and a rigid atmosphere regulating device. BACKGROUND

[0002] Low-oxygen atmosphere storage and insect killing technology is increasingly applied. Through low-oxygen atmosphere storage technology, Chinese medicinal materials, tobacco, cultural relics, books, archives and other articles can be insecticidal, fungicidal, bacteriostatic and long-term safely stored, and have many advantages such as non-toxic, environmental protection, safety, rapidness, economy, effectiveness and simple operation.

[0003] At present, the atmosphere storage space generally adopts a rigid enclosure (such as a rigid storage cabinet) to store articles such as Chinese medicinal materials, tobacco, cultural relics and books. The rigid enclosure has good air tightness and can achieve very low daily air exchange rate. However, when the environment changes (such as temperature change), the rigid enclosure will cause the internal and external pressure difference to become large, which will cause the rigid enclosure to deform or the air tightness to decrease, and seriously affect the safety and stability of the rigid enclosure. SUMMARY

[0004] In view of the technical problems in the prior art, the present application provides a protection device for a rigid enclosure, which comprises a shell and a partition plate arranged in the shell to divide the shell into a first space and a second space which are communicated through a passage at the bottom of the shell; wherein the first space is communicated with the atmosphere, and the second space is communicated with the rigid enclosure, and the bottom of the shell is provided with a liquid whose liquid level height is higher than the passage height.

[0005] The protection device for a rigid enclosure as described above comprises a communicating device which is connected with the second space at one end and communicated with the atmosphere at the other end, and the communicating device is subjected to pressure calibration.

[0006] The protection device for a rigid enclosure as described above, wherein when the gas pressure of the rigid enclosure is equal to the external atmospheric pressure, the liquid level of the first space is the same as the liquid level of the second space and is higher than the first distance of the passage.

[0007] The protection device for a rigid enclosure as described above, wherein when the gas pressure of the rigid enclosure is higher than the external atmospheric pressure and reaches a first threshold value, the gas in the rigid enclosure enters the atmosphere through the first space from the second space.

[0008] The protection device for a rigid enclosure as described above, wherein when the gas pressure of the rigid enclosure is lower than the external atmospheric pressure and reaches a second threshold value, the atmospheric pressure drives the liquid in the first space to flow to the second space, but the gas in the first space does not enter the second space.

[0009] The protection device for rigid enclosure as described above, wherein when the air pressure in the rigid enclosure is lower than the outside air pressure and reaches a third threshold value, the outside air enters the rigid enclosure through the second space via the lower part of the partition.

[0010] The protection device for rigid enclosure as described above, wherein the second space is arranged such that the liquid level in the second space is not higher than the connection between the second space and the rigid enclosure.

[0011] The protection device for rigid enclosure as described above, wherein the first space of the housing is at least partially made of transparent material, and the standard liquid level is indicated on the transparent material.

[0012] The protection device for rigid enclosure as described above, wherein the transparent material is indicated with a water replenishment liquid level. According to another aspect of the present application, a rigid air conditioning device is provided, comprising: a rigid air-tight enclosure; and a protection device for rigid enclosure as described above.

[0013] The protection device is installed on the rigid enclosure according to the present application, which can ensure the air pressure balance in the rigid enclosure. The protection device has the advantages of simple structure, small space occupation, and no energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0014] Hereinafter, the preferred embodiments of the present application will be further described in detail with reference to the accompanying drawings, in which:

[0015] Figure 1 Fig. 1 is a schematic view of the structure of a protection device according to an embodiment of the present application;

[0016] Figure 2 Fig. 2 is a schematic view of the side structure of a protection device according to an embodiment of the present application;

[0017] Figure 3A Fig. 3 is a schematic view of the air pressure change of a protection device according to an embodiment of the present application;

[0018] Figure 4A Fig. 4 is a schematic view of the air pressure change of a protection device according to an embodiment of the present application;

[0019] Figure 5 Fig. 5 is a schematic view of the structure of a protection device according to another embodiment of the present application; and

[0020] Figure 6 Fig. 6 is a schematic view of a rigid air conditioning device according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] In the following detailed description, reference will be made to the accompanying drawings, which form a part of this description. In the drawings, similar symbols

[0023] Figure 1 is a schematic diagram of a protection device structure according to an embodiment of the present application. Figure 2 is a schematic diagram of a protection device side structure according to an embodiment of the present application. As shown in the figure, the protection device 100 comprises a shell 110. In some embodiments, the shell 110 is a rectangular box with a hollow sealed structure inside. The shell 110 is filled with liquid, and the liquid level is higher than the height of the channel. Figure 2 It can be seen that the box 110 comprises a partition 113, which divides the shell 110 into a first space 117 and a second space 118 connected by a bottom channel. The bottom of the shell 110 is filled with liquid, and the liquid level is higher than the height of the channel, so that the second space forms a sealed space.

[0024] In some embodiments, the first space 117 is composed of at least the front panel 111 and the partition 113, and the bottom of the front panel 111 is sealingly connected to the bottom of the shell 110. The sealing connection mode includes but is not limited to adding an airtight pad between the two and applying sealant at the connection of the two respectively. The top of the first space 117 is open to the atmosphere. The front panel 111 is at least partially made of transparent material, which includes glass and acrylic plate. It should be understood by those skilled in the art that any transparent material can be applied in the present solution, which is not limited herein.

[0025] In some embodiments, a water level line is provided on the transparent material part, which is used to mark the water level change in the first space and indicate the positions of the standard liquid level and the water replenishment level. The standard liquid level is the specified height of the liquid in the shell at the initial work. The water replenishment level indicates that the liquid should be replenished when the liquid level in the shell is lower than a certain height. For example, referring to Figure 1 , the standard liquid level is scale 15, and when the liquid level is lower than scale 10, it is considered that the liquid should be replenished.

[0026] In some embodiments, the second space 118 is formed by the back panel 112 and the partition 113. The back panel 112 is sealed to the partition 113 by the top panel, and the bottom of the back panel is sealed to the bottom of the shell 110. The back panel includes a first connecting hole 114, through which the rigid airtight structure communicates with the second space. The height of the partition 113 is less than the height of the shell 110, so that a channel is formed at the bottom of the shell, which communicates the first space 117 and the second space 118. The liquid level in the shell 110 must be higher than the height of the channel to ensure the sealing of the second space. When the air pressure in the rigid airtight structure is equal to the atmospheric pressure, the liquid level in the first space 117 is the same as that in the second space 118 and is higher than the first distance of the channel. The smaller the first distance, the more sensitive the pressure in the airtight structure is, and the easier the gas is discharged after overpressure. Therefore, the distance cannot be too large to form excessive pressure. For example, when the first distance is 1 cm and the pressure difference between the inside and outside is greater than or equal to 200 Pa, the gas can flow out from the lower part of the partition 113. The first distance is 0.5-5 cm and can be set according to requirements.

[0027] In some embodiments, the protection device 100 further includes a communicating device, which can be a U-shaped tube 120. One end of the U-shaped tube 120 is connected to the shell 110 by a hose. The top panel of the shell includes a second connecting hole 115, which is sealed to the hose. In some embodiments, an air inlet valve 140 is installed on the hose 130, which can be used to control whether to use the U-shaped tube.

[0028] In some embodiments, a rectangular slot is formed on the first space, and the U-shaped tube 120 is fixed in the rectangular slot. In other embodiments, the U-shaped tube 120 is fixed inside the first space 117. Liquid is added to the U-shaped tube, so that the liquid on both sides of the U-shaped tube 120 is filled. When the U-shaped tube is connected to the second connecting hole 115 by the hose 130, one end of the U-shaped tube communicates with the rigid airtight structure. Changes in air pressure in the rigid airtight structure will cause changes in the liquid level in the U-shaped tube. The size of the U-shaped tube is much smaller than that of the shell 110, so the change in the liquid level in the U-shaped tube is more obvious when the air pressure in the rigid airtight structure changes. In some embodiments, a scale is provided on the outside of the U-shaped tube 120 to indicate the pressure in the rigid airtight structure. Before using the U-shaped tube, pressure calibration is required. When the U-shaped tube is connected to the rigid airtight structure, liquid is added and the liquid level is marked. By changing the known pressure in the rigid airtight structure, the change in the liquid level of the U-shaped tube is tested, and the corresponding pressure is marked. By the scale on the U-shaped tube, the pressure in the rigid airtight structure can be directly read. This method is simple, clear and easy to operate.

[0029] This application installs a protective device on a rigid enclosure structure, and observes changes in air pressure within the rigid enclosure structure by monitoring the liquid level changes displayed on the front panel 111 of the housing 110. The higher the air pressure within the rigid enclosure structure compared to atmospheric pressure, the higher the displayed liquid level; conversely, the lower the air pressure compared to atmospheric pressure, the lower the displayed liquid level. Detailed information on liquid level changes is provided below:

[0030] Figure 3A -C is a schematic diagram of the air pressure change of the protective device according to an embodiment of the present invention. Figure 3A This diagram illustrates the gas flow when the air pressure in the rigid envelope is greater than atmospheric pressure. As shown, when the air pressure in the rigid envelope is greater than atmospheric pressure, gas from the rigid envelope will enter the second space, causing the air pressure in the second space to increase. Then, the pressure in the second space drives liquid to flow into the first space, raising the liquid level in the first space. Additionally, gas from the second space enters the left side of the communicating vessel through a flexible tube, driving liquid on the left side of the communicating vessel to flow to the right side, raising the liquid level on the right side. The reasons for the increased air pressure in the rigid envelope include increased temperature and gas displacement within the rigid envelope.

[0031] like Figure 3B As shown, when the air pressure in the rigid enclosure structure is greater than atmospheric pressure but does not reach the first threshold, the liquid level in the first space is higher than the liquid level in the second space. Figure 3C As shown, when the air pressure in the rigid enclosure structure is greater than atmospheric pressure and reaches a first threshold, the liquid level in the second space is lower than the channel height, and the gas in the second space will enter the atmosphere through the liquid. Here, the first threshold indicates that the air pressure in the rigid enclosure structure is greater than atmospheric pressure, causing the liquid level in the first space to be higher than the liquid level in the second space, and the liquid level in the second space to be lower than the channel height. At this time, the gas in the second space will pass through the liquid into the first space and emerge as bubbles.

[0032] Figure 4A -C is a schematic diagram of the air pressure change of the protective device according to an embodiment of the present invention. Figure 4A This diagram illustrates the gas flow when the air pressure in the rigid enclosure is lower than atmospheric pressure. As shown, when the air pressure in the rigid enclosure is lower than atmospheric pressure, the rigid enclosure will draw gas from the second space, causing the pressure in the second space to decrease. Atmospheric pressure then drives the liquid in the first space to flow into the second space, raising the liquid level in the second space. Additionally, the second space will draw gas from the communicating vessel connected by a flexible hose, causing the liquid level on the left side of the communicating vessel to rise and the liquid level on the right side to fall. The reasons for the air pressure in the rigid enclosure being lower than atmospheric pressure include at least a decrease in temperature and instability in gas displacement.

[0033] like Figure 4BAs shown, when the rigid enclosure air pressure is lower than the outside atmospheric pressure and reaches the second threshold value, the atmospheric pressure drives the first space liquid to flow to the second space, but the gas in the first space will not enter the second space. When the rigid enclosure air pressure reaches the second threshold value, the liquid level height of the second space in the rigid enclosure air pressure is higher than the liquid level height of the first space, but the liquid level height of the first space is higher than the height of the channel.

[0034] As shown, when the rigid enclosure air pressure is lower than the outside atmospheric pressure and reaches the second threshold value, the atmospheric pressure drives the first space liquid to flow to the second space, but the gas in the first space will not enter the second space. When the rigid enclosure air pressure reaches the second threshold value, the liquid level height of the second space in the rigid enclosure air pressure is higher than the liquid level height of the first space, but the liquid level height of the first space is higher than the height of the channel. Figure 4C As shown, when the rigid enclosure air pressure is lower than the outside atmospheric pressure and reaches the third threshold value, the gas bubbles in the second space flow into the air-tight maintenance structure to balance the negative pressure, but because the distance between the connecting hole and the lower part of the partition is greater than twice the first distance, it can be ensured that no gas enters the rigid enclosure when the negative pressure occurs.

[0035] Figure 5 Figure 1 is a schematic diagram of a protection device structure according to another embodiment of the present application. As shown, the protection device 100 is a rectangular cuboid. In other embodiments, the protection device 100 is a square cuboid. Those skilled in the art should understand that the protection device can be designed into other shapes according to the needs of the rigid enclosure, which is not limited herein. In some embodiments, the length of the protection device is 10-25 centimeters, the width is 2-12 centimeters, and the height is 15-30 centimeters. The protection device has the advantages of simple structure, small space occupation, and good air tightness, and is very suitable for application on various rigid enclosures to ensure the air pressure balance of the rigid enclosure.

[0036] Figure 6 Figure 2 is a schematic diagram of a rigid air conditioning device according to an embodiment of the present application. As shown, the rigid air conditioning device includes a protection device 100 and a rigid enclosure 600, wherein the protection device 100 is fixed on the rigid enclosure 600. In some embodiments, when the rigid enclosure is a large storage cabinet, the protection device is fixed at a height of 1-1.5 meters from the ground, which is convenient for the operator to observe the liquid level change of the protection device. In other embodiments, when the rigid enclosure is a small storage cabinet, the protection device is fixed at a position above the storage cabinet, which is convenient for the operator to observe the liquid level change of the protection device.

[0037] The protection device in the present application has the characteristics of simple structure, small space occupation, and good air tightness. By installing the protection device on the rigid enclosure, the air pressure balance of the rigid enclosure can be ensured, and the problem of irreversible change of the structure of the rigid enclosure due to excessive pressure difference between the inside and outside can be prevented, which reduces the air tightness. The working stability and safety of the rigid enclosure can be effectively improved.

[0038] The above examples are only for illustrating the present application, and are not intended to limit the present application. Those skilled in the art can make various changes and modifications without departing from the scope of the present application. Therefore, all equivalent technical solutions should belong to the scope of the present application.

Claims

1. A protection device for a rigid enclosure, comprising: a housing; and a partition disposed in the housing, separating the housing into a first space and a second space, which are in communication through a passage in the bottom of the housing; wherein the first space is in communication with the atmosphere; the second space is in communication with the rigid enclosure, and the bottom of the housing is filled with a liquid, the height of which is greater than the height of the passage; a back panel, which is sealed to the partition by a top panel to form the second space, the back panel having a first connecting hole near the top position, and the second space being in communication with the rigid enclosure through the first connecting hole; a communicating vessel, which is a U-shaped tube having a hose connected to one end, the top panel having a second connecting hole, the other end of the hose being connected to the second space through the second connecting hole, the other end of the U-shaped tube being in communication with the atmosphere, and the U-shaped tube being filled with a liquid, the level of which in the communicating vessel changing with the air pressure in the rigid enclosure, the communicating vessel being pressure calibrated; wherein when the air pressure in the rigid enclosure is equal to the external atmospheric pressure, the liquid level in the first space is the same as that in the second space and is higher than the first distance of the passage; when the air pressure in the rigid enclosure is higher than the external atmospheric pressure and reaches a first threshold value, the gas in the rigid enclosure enters the atmosphere through the lower part of the partition in the second space; when the air pressure in the rigid enclosure is lower than the external atmospheric pressure and reaches a second threshold value, the atmospheric pressure drives the liquid in the first space to flow to the second space, but the gas in the first space does not enter the second space; when the air pressure in the rigid enclosure is lower than the external atmospheric pressure and reaches a third threshold value, the external gas enters the second space through the lower part of the partition, and the distance between the first connecting hole and the lower part of the partition is greater than twice the first distance, so that the external gas does not enter the rigid enclosure; wherein the first distance is 0.5-5 cm.

2. The protection device for a rigid enclosure according to claim 1, wherein the second space is configured such that the liquid level in the second space is not higher than the connection between the second space and the rigid enclosure.

3. The protection device for a rigid enclosure according to claim 1, wherein the first space of the housing is at least partially of a transparent material, and a standard liquid level is indicated on the transparent material.

4. The protection device for a rigid enclosure according to claim 3, wherein a replenishment liquid level is indicated on the transparent material.

5. A rigid air conditioning device, comprising: a rigid air-tight enclosure; and the protection device for a rigid enclosure according to any one of claims 1-4.

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