A moisture-proof treatment device for electric control components used in electronic information engineering

Abstract

The present invention belongs to the field of electronic information engineering technology, and in particular, is a moisture-proof processing device for electronic information engineering electronic control components, comprising an electric control box body, a surface of the electric control box body is provided with a moisture-proof mechanism, the moisture-proof mechanism comprises a heat dissipation component, a filter component, a waterproof component and a barrier component, the heat dissipation component is arranged on the surface of the electric control box body, the filter component is arranged inside the heat dissipation component, the waterproof component is arranged at one end of the heat dissipation component away from the electric control box body, and the barrier component is arranged on the surface of the electric control box body; it is beneficial to improve the heat dissipation performance of the electric control components inside the electric control box body, it is beneficial to improve the moisture-proof performance of the device, avoid moisture from entering the interior of the electric control box body to shorten the service life of the electric control components inside the electric control box body, and it is beneficial to further extend the service life of the electric control components inside the electric control box body.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic information engineering, and in particular relates to a moisture-proof processing device for electric control components used in electronic information engineering. Background Art

[0002] Electronic information engineering mainly studies the acquisition and processing of information, the design, development, application and integration of electronic equipment and information systems. The electronic control components used in electronic information engineering are generally placed in the electronic control cabinet, which protects the electronic control components. However, for the electronic control cabinets exposed to the outdoors for a long time, such as the electronic control cabinets on engineering vehicles, sometimes they need to work on rainy days. In this way, the electronic control cabinets will inevitably be exposed to rain, causing humid air or rainwater to enter the cabinet body of the electronic control cabinet from the heat dissipation port, causing the internal electronic control components to be damaged by moisture, thereby reducing the service life of the electronic control components.

[0003] Therefore, a moisture-proof treatment device for electric control components used in electronic information engineering is designed to solve the above problems. Summary of the invention

[0004] To solve the problems raised in the above background technology. The present invention provides a moisture-proof treatment device for electric control components for electronic information engineering, which is beneficial to improving the heat dissipation performance of the electric control components inside the electric control box body, and is beneficial to improving the moisture-proof performance of the device, preventing moisture from entering the inside of the electric control box body and shortening the service life of the electric control components inside the electric control box body, and is beneficial to further extend the service life of the electric control components inside the electric control box body.

[0005] To achieve the above object, the present invention provides the following technical solutions: a moisture-proof treatment device for electric control components used in electronic information engineering, comprising an electric control box body, the surface of which is provided with a moisture-proof mechanism;

[0006] The moisture-proof mechanism includes a heat dissipation component, a filtering component, a waterproof component and a barrier component. The heat dissipation component is arranged on the surface of the electric control box body, the filtering component is arranged inside the heat dissipation component, the waterproof component is arranged at one end of the heat dissipation component away from the electric control box body, and the barrier component is arranged on the surface of the electric control box body.

[0007] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the heat dissipation assembly includes an upper connecting pipe, a rotating cylinder, a heat dissipation fan, a lower connecting pipe and a connecting block, the upper connecting pipe is fixedly connected to the air inlet hole opened on the surface of the electric control box body, the rotating cylinder is fixedly connected to the end of the upper connecting pipe away from the electric control box body, the lower connecting pipe is fixedly connected to the end of the rotating cylinder away from the upper connecting pipe, the heat dissipation fan is fixedly installed on the inner wall surface of the rotating cylinder, the connecting block is fixedly connected to the surface of the electric control box body, and the connecting block is fixedly connected to the rotating cylinder.

[0008] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the filter assembly includes a rectangular frame, an activated carbon filter and a square sponge, a square slot is opened on the surface of the rotating cylinder, and the rectangular frame is slidably connected to the inner wall of the square slot, the activated carbon filter is fixedly connected to the inner wall of the rectangular frame, and the square sponge is fixedly connected to the inner wall of the rectangular frame near the upper position of the activated carbon filter.

[0009] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the filter assembly also includes a threaded knob, a threaded hole is opened on the surface of the rotating cylinder, and the threaded knob is screwed on the inner wall surface of the threaded hole, a positioning hole is opened on the surface of the rectangular frame, and one end of the threaded knob is located inside the positioning hole.

[0010] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the waterproof component includes an externally threaded bottom cone barrel and a waterproof barrel, the surface of the waterproof barrel is provided with a threaded circular groove, and the externally threaded bottom cone barrel is screwed to the inner wall surface of the threaded circular groove, the externally threaded bottom cone barrel is fixedly connected to the surface of the lower connecting pipe, and the surface of the externally threaded bottom cone barrel is provided with air inlet holes in a circular array.

[0011] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the waterproof component also includes a filter mesh ring, and the filter mesh ring is fixedly connected to the inner wall surface of the externally threaded bottom cone sleeve barrel near the air inlet.

[0012] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the waterproof component also includes a circular filter screen, a guide pipe and a one-way valve, a limiting hole is provided on a side of the externally threaded bottom cone sleeve barrel away from the lower connecting pipe, and the one-way valve is fixedly connected to the inner wall surface of the limiting hole, the guide pipe is fixedly connected to the surface of the one-way valve, the circular filter screen is fixedly connected to the inner wall surface of the waterproof sleeve barrel, a mounting circular hole is provided on the surface of the circular filter screen, and the guide pipe is located inside the mounting circular hole.

[0013] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the barrier component includes inclined plate one and inclined plate two, the inner wall surface of the electric control box body is provided with an exhaust groove, the surface of the electric control box body is provided with an air guide groove, the inclined plate one is equidistantly fixedly connected to the inner wall surface of the air guide groove, and the inclined plate two is equidistantly fixedly connected to the inner wall surface of the air guide groove at a position below the inclined plate one.

[0014] As a preferred moisture-proof treatment device for electronic control components for electronic information engineering of the present invention, the inner wall surface of the air guide groove is provided with a water collecting groove, the inner wall surface of the water collecting groove is provided with a through hole, and the inner wall surface of the through hole is provided with a water storage groove.

[0015] As a preferred embodiment of the moisture-proof treatment device for electric control components used in electronic information engineering of the present invention, the barrier component also includes a rubber plug, and the rubber plug is inserted into a socket connected to the water storage tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the addition of a heat dissipation component to the present application is beneficial to improving the heat dissipation performance of the electric control components inside the electric control box body; at the same time, the addition of a waterproof component is beneficial to filtering impurities in the air, and at the same time, preventing raindrops from flowing into the electric control box body when air enters the electric control box body, causing the electric control components inside the electric control box body to be damaged by moisture; at the same time, the addition of a filter component is beneficial to improving the moisture-proof performance of the device, preventing moisture from entering the interior of the electric control box body, thereby extending the service life of the electric control components inside the electric control box body, and facilitating regular replacement of the square sponge and activated carbon filter to ensure the moisture-proof effect of the device; at the same time, the addition of a barrier component is beneficial to preventing rainwater from entering the interior of the electric control box body along the air guide groove when the electric control box body is placed outdoors, thereby further extending the service life of the electric control components inside the electric control box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view in the present invention;

[0020] Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 For the present invention Figure 2 The enlarged view of point B in the middle;

[0022] Figure 5 It is a structural schematic diagram of the upper connecting pipeline and the middle rotating drum in the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the activated carbon filter screen and the rectangular frame in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the flow guide pipe and the circular filter screen in the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the external thread bottom cone sleeve barrel in the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the waterproof barrel in the present invention;

[0027] In the figure:

[0028] 1. Electric control box body; 2. Moisture-proof mechanism;

[0029] 3. Heat dissipation assembly; 31. Upper connecting pipe; 32. Middle rotating cylinder; 33. Heat dissipation fan; 34. Lower connecting pipe; 35. Connecting block;

[0030] 4. Filter assembly; 41. Square slot; 42. Rectangular frame; 43. Activated carbon filter; 44. Square sponge; 45. Threaded hole; 46. Positioning hole; 47. Threaded knob;

[0031] 5. Waterproof assembly; 51. Externally threaded bottom cone sleeve; 52. Air inlet; 53. Filter ring; 54. Waterproof sleeve; 55. Threaded round groove; 56. Round filter; 57. Installation round hole; 58. Flow guide pipe; 59. One-way valve; 510. Limit hole;

[0032] 6. Barrier component; 61. Exhaust slot; 62. Air guide slot; 63. Inclined plate 1; 64. Inclined plate 2; 65. Water collecting tank; 66. Through hole; 67. Water storage tank; 68. Rubber plug. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 9 As shown;

[0035] A moisture-proof treatment device for electric control components used in electronic information engineering, comprising an electric control box body 1, and a moisture-proof mechanism 2 is arranged on the surface of the electric control box body 1;

[0036] The moisture-proof mechanism 2 includes a heat dissipation component 3, a filter component 4, a waterproof component 5 and a barrier component 6. The heat dissipation component 3 is arranged on the surface of the electric control box body 1, the filter component 4 is arranged inside the heat dissipation component 3, the waterproof component 5 is arranged at one end of the heat dissipation component 3 away from the electric control box body 1, and the barrier component 6 is arranged on the surface of the electric control box body 1.

[0037] In an optional embodiment, the heat dissipation assembly 3 includes an upper connecting pipe 31, a rotating cylinder 32, a cooling fan 33, a lower connecting pipe 34 and a connecting block 35. The upper connecting pipe 31 is fixedly connected to the air inlet hole opened on the surface of the electric control box body 1, the rotating cylinder 32 is fixedly connected to the end of the upper connecting pipe 31 away from the electric control box body 1, the lower connecting pipe 34 is fixedly connected to the end of the rotating cylinder 32 away from the upper connecting pipe 31, the cooling fan 33 is fixedly installed on the inner wall surface of the rotating cylinder 32, the connecting block 35 is fixedly connected to the surface of the electric control box body 1, and the connecting block 35 is fixedly connected to the rotating cylinder 32.

[0038] In an optional embodiment, the filter assembly 4 includes a rectangular frame 42, an activated carbon filter 43 and a square sponge 44. A square slot 41 is opened on the surface of the rotating cylinder 32, and the rectangular frame 42 is slidably connected to the inner wall of the square slot 41. The activated carbon filter 43 is fixedly connected to the inner wall of the rectangular frame 42. The square sponge 44 is fixedly connected to the inner wall of the rectangular frame 42 near the upper position of the activated carbon filter 43.

[0039] In an optional embodiment, the filter assembly 4 also includes a threaded knob 47, a threaded hole 45 is opened on the surface of the rotating cylinder 32, and the threaded knob 47 is screwed on the inner wall surface of the threaded hole 45, a positioning hole 46 is opened on the surface of the rectangular frame 42, and one end of the threaded knob 47 is located inside the positioning hole 46.

[0040] In an optional embodiment, the waterproof component 5 includes an externally threaded bottom cone sleeve barrel 51 and a waterproof sleeve barrel 54, the surface of the waterproof sleeve barrel 54 is provided with a threaded circular groove 55, and the externally threaded bottom cone sleeve barrel 51 is screwed to the inner wall surface of the threaded circular groove 55, the externally threaded bottom cone sleeve barrel 51 is fixedly connected to the surface of the lower connecting pipe 34, and the surface of the externally threaded bottom cone sleeve barrel 51 is provided with air inlet holes 52 in a circular array.

[0041] In an optional embodiment, the waterproof component 5 further includes a filter mesh ring 53 , which is fixedly connected to the inner wall surface of the externally threaded bottom cone sleeve barrel 51 at a position close to the air inlet 52 .

[0042] In an optional embodiment, the waterproof component 5 also includes a circular filter screen 56, a guide tube 58 and a one-way valve 59. A limiting hole 510 is provided on a side of the externally threaded bottom cone sleeve barrel 51 away from the lower connecting pipe 34, and the one-way valve 59 is fixedly connected to the inner wall surface of the limiting hole 510. The guide tube 58 is fixedly connected to the surface of the one-way valve 59. The circular filter screen 56 is fixedly connected to the inner wall surface of the waterproof sleeve barrel 54. An installation circular hole 57 is provided on the surface of the circular filter screen 56, and the guide tube 58 is located inside the installation circular hole 57.

[0043] In an optional embodiment, the barrier assembly 6 includes an inclined plate 1 63 and an inclined plate 2 64, an exhaust groove 61 is provided on the inner wall surface of the electric control box body 1, an air guide groove 62 is provided on the surface of the electric control box body 1, the inclined plate 1 63 is equidistantly fixedly connected to the inner wall surface of the air guide groove 62, and the inclined plate 2 64 is equidistantly fixedly connected to the inner wall surface of the air guide groove 62 near the lower position of the inclined plate 1 63.

[0044] In an optional embodiment, a water collecting groove 65 is formed on the inner wall surface of the air guide groove 62 , a through hole 66 is formed on the inner wall surface of the water collecting groove 65 , and a water storage groove 67 is formed on the inner wall surface of the through hole 66 .

[0045] In an optional embodiment, the barrier assembly 6 further includes a rubber plug 68 , which is inserted into a socket connected to the water storage tank 67 .

[0046] In this embodiment: the electric control element is installed inside the electric control box body 1. When the moisture-proof treatment device is used, the connecting line of the cooling fan 33 is connected to the external power supply. The operation of the cooling fan 33 allows the air around the waterproof barrel 54 to pass through the inside of the waterproof barrel 54 and flow into the inside of the external threaded bottom cone barrel 51 along the inside of the air inlet hole 52. The gas flows into the inside of the transfer cylinder 32 through the inside of the external threaded bottom cone barrel 51, and flows into the inside of the electric control box body 1 through the inside of the upper connecting pipe 31. As the gas inside the electric control box body 1 increases, the gas inside the electric control box body 1 flows into the inside of the air guide groove 62 along the inside of the exhaust groove 61, and flows out along the inside of the air guide groove 62. As the gas inside the electric control box body 1 flows The speed of movement is accelerated, which is beneficial to improving the heat dissipation performance of the electric control components inside the electric control box body 1. When the external gas passes through the interior of the waterproof sleeve barrel 54, the impurities in the air are filtered under the action of the circular filter 56. When the gas flows into the interior of the external threaded bottom cone sleeve barrel 51 along the interior of the air inlet hole 52, the impurities in the air are further filtered under the action of the filter ring 53, so as to avoid the phenomenon that the external impurities flow into the interior of the electric control box body 1 and affect the use of the electric control components. If the device is used in rainy weather, under the action of the operation of the cooling fan 33, some raindrops pass through the circular filter 56 and flow into the interior of the external threaded bottom cone sleeve barrel 51 along the air inlet hole 52. Under the action of the gravity of the raindrops, the raindrops adhere to the external threaded bottom cone sleeve barrel 51. 1, and flows along the inner wall of the external thread bottom cone sleeve barrel 51. When raindrops gather at the tapered part of the external thread bottom cone sleeve barrel 51, under the action of the one-way valve 59, the raindrops flow along the inside of the guide tube 58 and flow out, which is beneficial to avoid the phenomenon that raindrops flow into the inside of the electric control box body 1 when air enters the inside of the electric control box body 1, causing the electric control components inside the electric control box body 1 to be damaged by moisture. When the air passes through the inside of the transfer cylinder 32 and flows into the electric control box body 1 along the inside of the upper connecting pipe 31, the activated carbon filter 43 absorbs moisture in the air to prevent moisture from entering the inside of the electric control box body 1, protects the electric control components inside the electric control box body 1, and prolongs the service life of the electric control components inside the electric control box body 1. The square sponge 44 can Secondary absorption of moisture in the air is beneficial to improving the moisture-proof performance of the device, preventing moisture from entering the interior of the electric control box body 1, thereby extending the service life of the electric control components inside the electric control box body 1. After the moisture-proof treatment device has been used for a period of time, the threaded knob 47 is rotated, and the threaded knob 47 rotates on the inner wall surface of the threaded hole 45. After the threaded knob 47 is screwed out from the interior of the positioning hole 46, a force is applied to the rectangular frame 42, so that the rectangular frame 42 can slide along the inner wall surface of the square slot 41 until it slides out. When installing the replaced activated carbon filter 43 and the square sponge 44, the rectangular frame 42 is inserted along the inner wall surface of the square slot 41. When the rectangular frame 42 fits the inner wall surface of the square slot 41, the threaded knob 47 is rotated.When the threaded knob 47 is inserted into the interior of the positioning hole 46, the position of the rectangular frame 42 is fixed, which is convenient for regularly replacing the square sponge 44 and the activated carbon filter 43 to ensure the moisture-proof effect of the device. When the electric control box body 1 is placed outdoors in rainy weather, under the action of the inclined plate 1 63 and the inclined plate 2 64, the air inside the electric control box body 1 flows and is discharged along the inner wall surface of the exhaust groove 61 and the air guide groove 62, preventing rainwater from entering the interior of the electric control box body 1. If rainwater flows in the air guide groove 62, the air inside the electric control box body 1 will be discharged. Under the action of the water collecting groove 65, the rainwater inside the air guide groove 62 flows into the water storage groove 67 along the inside of the through hole 66. When the water inside the water storage groove 67 accumulates a lot, the rubber plug 68 is taken out from the plug hole connected to the water storage groove 67, so that the water inside the water storage groove 67 flows out, which is beneficial to prevent rainwater from entering the inside of the electric control box body 1 along the air guide groove 62 when the electric control box body 1 is placed outdoors, and further prolong the service life of the electric control components inside the electric control box body 1.

[0047] It should be noted that the activated carbon filter 43 uses aluminum honeycomb, plastic honeycomb and paper honeycomb with a through-hole structure as a carrier. Compared with the traditional ones, it has better gas dynamics performance, small volume density, large specific surface area, high adsorption efficiency and small wind resistance coefficient. The square sponge 44 can absorb moisture in the air for a second time to improve the moisture-proof performance of the device. The operation of the cooling fan 33 can speed up the air flow and improve the heat dissipation performance of the electronic control components.

[0048] It should be noted that the waterproof barrel 54 can be removed by rotating the waterproof barrel 54 under the action of the threaded circular groove 55, which is conducive to cleaning the debris adhered to the surface of the circular filter 56 and avoiding the accumulation of debris affecting the heat dissipation effect of the electronic control components.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A moisture-proof treatment device for electric control components used in electronic information engineering, comprising an electric control box body (1), characterized in that: The surface of the electric control box body (1) is provided with a moisture-proof mechanism (2); The moisture-proof mechanism (2) comprises a heat dissipation component (3), a filter component (4), a waterproof component (5) and a barrier component (6); the heat dissipation component (3) is arranged on the surface of the electric control box body (1); the filter component (4) is arranged inside the heat dissipation component (3); the waterproof component (5) is arranged at one end of the heat dissipation component (3) away from the electric control box body (1); and the barrier component (6) is arranged on the surface of the electric control box body (1); The heat dissipation assembly (3) comprises an upper connecting pipe (31), a middle rotating cylinder (32), a heat dissipation fan (33), a lower connecting pipe (34) and a connecting block (35); the upper connecting pipe (31) is fixedly connected to an air inlet hole provided on the surface of the electric control box body (1); the middle rotating cylinder (32) is fixedly connected to an end of the upper connecting pipe (31) away from the electric control box body (1); the lower connecting pipe (34) is fixedly connected to an end of the middle rotating cylinder (32) away from the upper connecting pipe (31); the heat dissipation fan (33) is fixedly installed on the inner wall surface of the middle rotating cylinder (32); the connecting block (35) is fixedly connected to the surface of the electric control box body (1), and the connecting block (35) is fixedly connected to the middle rotating cylinder (32); The filter assembly (4) comprises a rectangular frame (42), an activated carbon filter (43) and a square sponge (44); a square slot (41) is provided on the surface of the rotating cylinder (32); the rectangular frame (42) is slidably connected to the inner wall of the square slot (41); the activated carbon filter (43) is fixedly connected to the inner wall of the rectangular frame (42); and the square sponge (44) is fixedly connected to the inner wall of the rectangular frame (42) at a position above the activated carbon filter (43); The waterproof assembly (5) comprises an externally threaded bottom cone barrel (51) and a waterproof barrel (54); a threaded circular groove (55) is provided on the surface of the waterproof barrel (54); the externally threaded bottom cone barrel (51) is screwed onto the inner wall of the threaded circular groove (55); the externally threaded bottom cone barrel (51) is fixedly connected to the surface of the lower connecting pipe (34); and an annular array of air inlet holes (52) is provided on the surface of the externally threaded bottom cone barrel (51); The waterproof component (5) further comprises a circular filter (56), a flow guide pipe (58) and a one-way valve (59); a limiting hole (510) is provided on a side of the externally threaded bottom cone sleeve barrel (51) away from the lower connecting pipe (34); the one-way valve (59) is fixedly connected to the inner wall surface of the limiting hole (510); the flow guide pipe (58) is fixedly connected to the surface of the one-way valve (59); the circular filter (56) is fixedly connected to the inner wall surface of the waterproof sleeve barrel (54); a mounting circular hole (57) is provided on the surface of the circular filter (56); and the flow guide pipe (58) is located inside the mounting circular hole (57); The barrier component (6) comprises an inclined plate 1 (63) and an inclined plate 2 (64); an exhaust groove (61) is provided on the inner wall surface of the electric control box body (1); an air guide groove (62) is provided on the surface of the electric control box body (1); the inclined plate 1 (63) is fixedly connected to the inner wall surface of the air guide groove (62) at an equidistant distance; and the inclined plate 2 (64) is fixedly connected to the inner wall surface of the air guide groove (62) at a position below the inclined plate 1 (63) at an equidistant distance.

2. The moisture-proof treatment device for electronic control components for electronic information engineering according to claim 1, characterized in that: The filter assembly (4) further comprises a threaded knob (47), a threaded hole (45) is provided on the surface of the rotating cylinder (32), and the threaded knob (47) is screwed onto the inner wall surface of the threaded hole (45), a positioning hole (46) is provided on the surface of the rectangular frame (42), and one end of the threaded knob (47) is located inside the positioning hole (46).

3. The moisture-proof treatment device for electronic control components for electronic information engineering according to claim 1, characterized in that: The waterproof component (5) further comprises a filter mesh ring (53), wherein the filter mesh ring (53) is fixedly connected to the inner wall surface of the externally threaded bottom cone sleeve barrel (51) at a position close to the air inlet hole (52).

4. The moisture-proof treatment device for electronic control components for electronic information engineering according to claim 1, characterized in that: The inner wall surface of the air guide groove (62) is provided with a water collecting groove (65), the inner wall surface of the water collecting groove (65) is provided with a through hole (66), and the inner wall surface of the through hole (66) is provided with a water storage groove (67).

5. The moisture-proof treatment device for electronic control components for electronic information engineering according to claim 4, characterized in that: The barrier assembly (6) further comprises a rubber plug (68), wherein the rubber plug (68) is inserted into a plug hole connected to the water storage tank (67).

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