Safety protection type electrical control cabinet with emergency treatment function

Abstract

The application discloses a safe protection type electrical control cabinet with a critical treatment function, and relates to the technical field of electrical control equipment. The application discloses a safe protection type electrical control cabinet with a critical treatment function, and relates to the technical field of electrical control equipment. The cabinet body is provided with a cabinet door movably connected to one side of the cabinet body, a ventilation hole is formed in the surface of the cabinet body, a fixing piece is embedded in the inner wall of the cabinet body, a limiting seat is fixed to the inner wall of the cabinet body, and an installation piece is slidably connected to the inner wall of the electrical cabinet assembly. The application solves the defects of weak emergency treatment capability, low operation safety and poor unattended reliability of the existing safe protection type electrical control cabinet with a critical treatment function through the cooperative design of the electrical cabinet assembly and the auxiliary assembly. The passive emergency mode of only sound and light alarm is abandoned, the standby large-capacity fan can be automatically started according to the internal real-time temperature and humidity data to rapidly radiate heat and dehumidify, and the problems of insulation reduction, aging acceleration and even burning of electrical elements caused by the untimely response of the staff are avoided.

Description

Technical Field

[0001] This invention relates to the field of electrical control equipment technology, and in particular to a safety protection electrical control cabinet with emergency handling function. Background Technology

[0002] In the daily operation of industrial electrical control, safety protection electrical control cabinets are required to isolate equipment and protect circuits to prevent overload or short circuit faults from affecting production continuity or endangering the lives of on-site operators.

[0003] Existing safety-protected electrical control cabinets with emergency handling functions have significant deficiencies in emergency response capabilities, operational safety, and unattended reliability. During long-term operation, when an emergency situation occurs due to abnormal internal temperature or humidity, they can usually only issue audible and visual alarms to prompt personnel to handle the situation. They cannot automatically activate backup high-volume fans for rapid heat dissipation and dehumidification based on real-time internal temperature and humidity data. This can easily lead to the internal temperature or humidity of the electrical cabinet continuously exceeding the standard due to untimely response from personnel, causing a decline in the insulation performance of electrical components, accelerated aging, performance degradation, or even burnout, seriously affecting the operational reliability and service life of the electrical control cabinet. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing safety protection electrical control cabinets with emergency handling functions, the present invention is proposed.

[0006] Therefore, the problem that this invention aims to solve is that critical and abnormal situations usually require manual intervention.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a safety protection electrical control cabinet with emergency handling function, comprising: an electrical cabinet assembly including a cabinet body, a cabinet door movably connected to one side of the cabinet body, ventilation holes opened on the surface of the cabinet body, a fixing member embedded in the inner wall of the cabinet body, a limit seat fixed to the inner wall of the cabinet body, an installation member slidably connected to the inner wall of the electrical cabinet assembly, a ventilation hole opened on one side of the cabinet body; and an auxiliary assembly disposed on the inner wall of the electrical cabinet assembly, including a ventilation filter fixed to the surface of the cabinet body, a thermal driving member fixed to the inner wall of the cabinet body, an energizing member disposed at the bottom of the thermal driving member, a humidity driving member sleeved on the surface of the energizing member, and the energizing member fixed to the inner wall of the cabinet body.

[0008] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the fixing component includes a fixing frame embedded in the inner wall of the cabinet, and a first axial fan and a second axial fan are sequentially embedded in the inner wall of the fixing frame from top to bottom.

[0009] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the mounting component includes a sliding seat slidably connected to the inner wall of the cabinet, and the surface of the sliding seat is equipped with sliding wheels.

[0010] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, wherein: a mounting bracket is fixed on the top of the sliding seat, and mounting holes are provided on the surface of the mounting bracket.

[0011] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the thermal driving component includes a cylinder disposed on the inner wall of the cabinet, and a fixing rod is fixed to one side of the cylinder, the fixing rod being fixed to the inner wall of the cabinet.

[0012] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the top of the cylinder is provided with a heat-spreading plate, the top of the heat-spreading plate is fixed with heat-conducting fins, a sealing piston is slidably connected to the inner wall of the cylinder, a sliding rod is fixed to the bottom of the sealing piston, and a pressing plate is fixed to the bottom of the sliding rod.

[0013] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the energizing component includes a support plate fixed to the inner wall of the cabinet, and a support vertical rod is fixed to the top of the support plate.

[0014] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, a second electrode plate is provided on the outer side of the supporting vertical rod, a first electrode plate is provided at the bottom of the second electrode plate, and the first electrode plate is fixed to the top of the support plate.

[0015] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the humidity driving component includes a sliding plate sleeved on the surface of the supporting vertical rod, a return spring fixed at the bottom of the sliding plate, the return spring sleeved on the surface of the supporting vertical rod, and a transmission lever fixed on one side of the sliding plate.

[0016] As a preferred embodiment of the safety protection electrical control cabinet with emergency handling function described in this invention, the top of the sliding plate is fixed with a storage base, and the inner wall of the storage base is filled with moisture-absorbing balls.

[0017] The beneficial effects of this invention are as follows: Through the collaborative design of electrical cabinet components and auxiliary components, it solves the shortcomings of existing safety-protected electrical control cabinets with emergency handling functions, such as weak emergency handling capabilities, low operational safety, and poor reliability for unattended operation; it abandons the passive emergency mode that only provides audible and visual alarms, and can automatically start a backup large-volume fan for rapid heat dissipation and dehumidification based on real-time internal temperature and humidity data, avoiding problems such as decreased insulation, accelerated aging, or even burnout of electrical components due to delayed response by staff, thus ensuring operational reliability and service life; it establishes a linkage control mechanism between abnormal temperature and humidity and emergency handling, eliminating the need for manual on-site operation, improving emergency response speed, avoiding human error, and solving major safety accidents such as short circuits and fires caused by the inability to handle abnormalities in a timely manner in unattended scenarios such as nighttime and holidays; it achieves closed-loop automatic handling of emergency situations, automatically cutting off unnecessary loads to reduce heat sources while starting the emergency fan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of a safety-protected electrical control cabinet with emergency response capabilities.

[0020] Figure 2 This is an internal structural diagram of a safety-protected electrical control cabinet with emergency response capabilities.

[0021] Figure 3 This is another perspective view of a safety-protected electrical control cabinet with emergency handling capabilities.

[0022] Figure 4 This is a structural diagram of the mounting components for a safety-protected electrical control cabinet with emergency response capabilities.

[0023] Figure 5 This is a plan view of a safety-protected electrical control cabinet with emergency response capabilities.

[0024] Figure 6 For safety protection electrical control cabinets with emergency handling functions Figure 2 A magnified view of A in the middle.

[0025] In the diagram: 1. Electrical cabinet assembly; 11. Cabinet body; 12. Cabinet door; 13. Ventilation vent; 14. Air vent; 15. Fixing component; 151. Fixing frame; 152. First axial flow fan; 153. Second axial flow fan; 16. Limiting seat; 17. Mounting component; 171. Sliding seat; 172. Sliding wheel; 173. Mounting bracket; 174. Mounting hole; 2. Auxiliary components; 21. Ventilation filter; 22. Thermal actuator; 221. 222. Cylinder body; 223. Heat-conducting fins; 224. Fixing rod; 225. Sealing piston; 226. Sliding rod; 227. Extrusion plate; 23. Humidity driving component; 231. Sliding plate; 232. Storage seat; 233. Moisture-absorbing bulb; 234. Transmission lever; 235. Return spring; 24. Electrical component; 241. Support plate; 242. Supporting vertical rod; 243. First electrode plate; 244. Second electrode plate. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a safety protection electrical control cabinet with emergency handling function. The safety protection electrical control cabinet with emergency handling function includes an electrical cabinet assembly 1 and an auxiliary assembly 2.

[0030] Specifically, the electrical cabinet assembly 1 includes a cabinet body 11, a cabinet door 12 movably connected to one side of the cabinet body 11, a ventilation hole 13 opened on the surface of the cabinet body 11, a fixing member 15 embedded in the inner wall of the cabinet body 11, a limit seat 16 fixed to the inner wall of the cabinet body 11, an installation member 17 slidably connected to the inner wall of the electrical cabinet assembly 1, and a ventilation hole 14 opened on one side of the cabinet body 11.

[0031] Specifically, auxiliary component 2 is set on the inner wall of electrical cabinet component 1, including a ventilation filter 21 fixed to the surface of cabinet 11, a heat-sensing drive component 22 fixed on the inner wall of cabinet 11, an energizing component 24 at the bottom of the heat-sensing drive component 22, a humidity drive component 23 on the surface of the energizing component 24, and the energizing component 24 fixed to the inner wall of cabinet 11.

[0032] Through the collaborative design of electrical cabinet component 1 and auxiliary component 2, the shortcomings of existing safety protection electrical control cabinets with emergency handling functions, such as weak emergency handling capabilities, low operational safety, and poor reliability for unattended operation, are addressed. The passive emergency mode, which only provides audible and visual alarms, is abandoned. Based on real-time internal temperature and humidity data, a backup high-volume fan is automatically activated for rapid heat dissipation and dehumidification, preventing issues such as reduced insulation, accelerated aging, or even burnout of electrical components due to delayed staff response, thus ensuring operational reliability and service life. A linkage control mechanism between abnormal temperature and humidity and emergency handling is established, eliminating the need for manual on-site operation, improving emergency response speed, avoiding human error, and resolving major safety accidents such as short circuits and fires caused by the inability to handle abnormalities in a timely manner during nighttime, holidays, or other unattended scenarios. Closed-loop automatic handling of emergency situations is achieved, automatically cutting off unnecessary loads to reduce heat sources while activating the emergency fan.

[0033] Example 2, refer to Figures 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0034] Specifically, the fastener 15 includes a fixing frame 151 embedded in the inner wall of the cabinet 11, and the inner wall of the fixing frame 151 is sequentially fitted with a first axial fan 152 and a second axial fan 153 from top to bottom.

[0035] The fixed frame 151 adopts an embedded installation structure, which facilitates quick disassembly and replacement of the internal fan and filter components. The first axial fan 152 and the second axial fan 153 are arranged symmetrically at the top and bottom to form an air exchange channel for vertical convection, which greatly improves the air circulation efficiency inside the cabinet and avoids the accumulation of local heat and moisture. At the same time, it can draw clean air from the outside into the cabinet and expel polluted air. In daily use, only the first axial fan 152 is turned on for daily air exchange. When high temperature or high humidity occurs, the heat-sensing drive component 22 or the humidity drive component 23 drives the power-on component 24 to realize circuit conduction and start the second axial fan 153 to accelerate heat dissipation and dehumidification.

[0036] Specifically, the mounting component 17 includes a sliding seat 171 that is slidably connected to the inner wall of the cabinet 11, and a sliding wheel 172 is mounted on the surface of the sliding seat 171.

[0037] Mounting component 17 enables pull-out installation of electrical equipment. Sliding seat 171 slides along the guide rail on the inner wall of cabinet 11, driving mounting component 17 to move in and out of the cabinet as a whole. Sliding wheel 172 reduces sliding friction resistance, making the pull-out action smoother and less strenuous. The installation and maintenance of equipment can be completed without moving it, greatly reducing the difficulty of operation and maintenance.

[0038] Specifically, a mounting bracket 173 is fixed to the top of the sliding seat 171, and mounting holes 174 are provided on the surface of the mounting bracket 173.

[0039] Mounting bracket 173 provides a rigid mounting platform for electrical equipment. The mounting holes 174 evenly distributed on the surface can adapt to the installation requirements of equipment of different specifications, making it highly versatile. Electrical components can be firmly fixed to the mounting bracket 173 by passing bolts through the mounting holes 174, preventing the equipment from shaking or shifting during operation and ensuring stable electrical connections.

[0040] Specifically, the thermal drive unit 22 includes a cylinder 221 disposed on the inner wall of the cabinet 11, and a fixing rod 224 is fixed on one side of the cylinder 221. The fixing rod 224 is fixed to the inner wall of the cabinet 11.

[0041] The thermal drive component 22 utilizes temperature changes to achieve purely mechanical automatic drive. The fixing rod 224 firmly fixes the cylinder 221 near the heating area inside the cabinet 11, ensuring accurate sensing of temperature changes inside the cabinet. The cylinder 221 is a sealed cavity filled with a thermosensitive expansion medium, providing a medium basis for thermal conversion.

[0042] Specifically, a heat-spreading plate 222 is embedded at the top of the cylinder 221, and heat-conducting fins 223 are fixed at the top of the heat-spreading plate 222. A sealing piston 225 is slidably connected to the inner wall of the cylinder 221, and a sliding rod 226 is fixed at the bottom of the sealing piston 225. An extrusion plate 227 is fixed at the bottom of the sliding rod 226.

[0043] The heat-conducting fins 223 work in conjunction with the heat spreader 222 to quickly absorb heat from inside the cabinet and evenly transfer it to the heat-sensitive medium inside the cylinder 221. After the heat-sensitive medium expands due to heat, it pushes the sealing piston 225 to slide downward along the inner wall of the cylinder 221. Through the sliding rod 226, it drives the extrusion plate 227 to move downward synchronously, converting thermal energy into mechanical energy and pressing the transmission paddle 234 to achieve automatic drive triggered by temperature, without the need for an external power supply and electrical control system.

[0044] Specifically, the power supply component 24 includes a support plate 241 fixed to the inner wall of the cabinet 11, and a support rod 242 is fixed to the top of the support plate 241.

[0045] The energized component 24 provides stable support for the electrode assembly and the humidity driving component. The support plate 241 is made of insulating material to prevent short circuits. The support rod 242 provides linear sliding guidance for the sliding plate 231 to ensure that its movement trajectory is accurate and without deviation.

[0046] Specifically, a second electrode plate 244 is provided on the outer side of the support rod 242, and a first electrode plate 243 is provided at the bottom of the second electrode plate 244. The first electrode plate 243 is fixed to the top of the support plate 241.

[0047] The first electrode plate 243 and the second electrode plate 244 form a circuit switch. When the extrusion plate 227 moves down and extrudes the second electrode plate 244 so that it contacts the first electrode plate 243, the circuit is turned on and the second axial flow fan 153 is automatically started for ventilation and heat dissipation. When the temperature drops, the thermal medium contracts, causing the extrusion plate 227 to reset, the electrode to disconnect, and the second axial flow fan 153 to automatically stop running, thus realizing temperature adaptive control.

[0048] Specifically, the humidity driving component 23 includes a sliding plate 231 sleeved on the surface of the support rod 242, a return spring 235 fixed at the bottom of the sliding plate 231, the return spring 235 sleeved on the surface of the support rod 242, and a transmission paddle 234 fixed on one side of the sliding plate 231.

[0049] Example 3, referring to Figures 2-6 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0050] Specifically, a storage base 232 is fixed to the top of the sliding plate 231, and a moisture-absorbing ball 233 is placed on the inner wall of the storage base 232.

[0051] The second electrode 244 is fixed to the surface of the sliding plate 231. The humidity driving component 23 is automatically driven by humidity changes. The moisture-absorbing ball 233 is made of a moisture-absorbing and expanding material. When the humidity inside the cabinet increases, the moisture-absorbing ball 233 absorbs moisture and expands, increasing its weight. It slides down along the support rod 242, which drives the electrode to conduct and triggers the ventilation circuit to conduct. When the humidity decreases, the sliding plate 231 loses water and contracts. The reset spring 235 pushes the sliding plate 231 to automatically reset and disconnect the circuit, realizing humidity adaptive ventilation control.

[0052] During use, when the electrical cabinet is running normally, the first axial fan 152 of the fixing component 15 starts, forming a daily ventilation channel with the ventilation hole 13. Outside air enters the cabinet 11 through the ventilation hole 13 and the ventilation hole 14, carrying the heat and moisture generated by the operation of the electrical components, and is discharged from the cabinet 11 through the ventilation hole 13, realizing daily heat dissipation and dehumidification. The ventilation filter 21 intercepts external dust, lint and other impurities, preventing them from entering the cabinet 11 and contaminating the electrical components. The sliding seat 171 of the mounting component 17 is slidably connected to the inner wall of the cabinet 11 through the sliding wheel 172. The limit seat 16 limits the maximum push-in stroke of the sliding seat 171, which facilitates the installation and maintenance of electrical components.

[0053] When the internal temperature of the cabinet 11 rises to the set threshold, the heat-conducting fins 223 of the heat-sensing drive 22 quickly absorb the heat inside the cabinet 11 and transfer it evenly to the heat-sensitive medium inside the cylinder 221 via the heat spreader 222. The heat-sensitive medium expands in a directional manner when heated, pushing the sealing piston 225 to slide downward along the inner wall of the cylinder 221. The sliding rod 226 drives the extrusion plate 227 to move downward synchronously. When the extrusion plate 227 moves to the set position, it extrudes the transmission paddle 234 of the humidity drive 23, causing the sliding plate 231 to slide downward along the support rod 242, so that the second electrode plate 244 fixed on the surface of the sliding plate 231 comes into close contact with the first electrode plate 243 of the energizing component 24, automatically turning on the control circuit.

[0054] After the control circuit is turned on, the second axial flow fan 153 of the fixing component 15 is immediately started, forming a large-volume forced convection channel with the first axial flow fan 152, accelerating the air circulation inside the cabinet 11 and quickly removing the accumulated heat; when the temperature drops back to the normal range, the heat-sensitive medium inside the cylinder 221 cools and contracts, driving the sealing piston 225, sliding rod 226 and extrusion plate 227 to reset upwards, the reset spring 235 pushes the sliding plate 231 to reset synchronously, the first electrode plate 243 and the second electrode plate 244 separate, the control circuit is disconnected, the second axial flow fan 153 automatically stops running, and returns to the normal ventilation mode.

[0055] When the humidity inside the cabinet 11 rises to the set threshold, the moisture-absorbing bulb 233 of the humidity driving component 23 absorbs moisture from the air and expands, significantly increasing its own weight. This significantly increases its own weight, overcoming the elastic force of the return spring 235, and causing the sliding plate 231 to slide downwards along the support rod 242. This causes the second electrode plate 244 to make close contact with the first electrode plate 243, automatically turning on the control circuit. After the control circuit is turned on, the second axial flow fan 153 is started to accelerate the air circulation inside the cabinet 11, quickly expelling humid air and introducing dry air from the outside. When the humidity drops back to the normal range, the moisture-absorbing bulb 233 gradually loses water and shrinks, reducing its own weight. The return spring 235 pushes the sliding plate 231 upwards to reset, separating the first electrode plate 243 from the second electrode plate 244. The control circuit is disconnected, and the second axial flow fan 153 automatically stops running.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A safety-protected electrical control cabinet with emergency handling function, characterized in that: include, An electrical cabinet assembly (1) includes a cabinet body (11), a cabinet door (12) movably connected to one side of the cabinet body (11), a ventilation hole (13) opened on the surface of the cabinet body (11), a fixing member (15) embedded in the inner wall of the cabinet body (11), a limit seat (16) fixed to the inner wall of the cabinet body (11), an installation member (17) slidably connected to the inner wall of the electrical cabinet assembly (1), a ventilation hole (14) opened on one side of the cabinet body (11), and; An auxiliary component (2) is disposed on the inner wall of the electrical cabinet component (1), including a ventilation filter (21) fixed to the surface of the cabinet (11), a thermal drive component (22) is fixed on the inner wall of the cabinet (11), a power supply component (24) is disposed at the bottom of the thermal drive component (22), a humidity drive component (23) is sleeved on the surface of the power supply component (24), and the power supply component (24) is fixed to the inner wall of the cabinet (11).

2. The safety protection electrical control cabinet with emergency handling function as described in claim 1, characterized in that: The fastener (15) includes a fixing frame (151) embedded in the inner wall of the cabinet (11), and the inner wall of the fixing frame (151) is provided with a first axial fan (152) and a second axial fan (153) from top to bottom.

3. The safety protection electrical control cabinet with emergency handling function as described in claim 2, characterized in that: The mounting component (17) includes a sliding seat (171) that is slidably connected to the inner wall of the cabinet (11), and a sliding wheel (172) is mounted on the surface of the sliding seat (171).

4. The safety protection electrical control cabinet with emergency handling function as described in claim 3, characterized in that: The top of the sliding seat (171) is fixed with a mounting bracket (173), and the surface of the mounting bracket (173) is provided with mounting holes (174).

5. The safety protection electrical control cabinet with emergency handling function as described in claim 4, characterized in that: The thermal drive unit (22) includes a cylindrical body (221) disposed on the inner wall of the cabinet (11), and a fixing rod (224) is fixed on one side of the cylindrical body (221). The fixing rod (224) is fixed to the inner wall of the cabinet (11).

6. The safety protection electrical control cabinet with emergency handling function as described in claim 5, characterized in that: A heat spreader plate (222) is embedded at the top of the cylinder (221), and heat-conducting fins (223) are fixed at the top of the heat spreader plate (222). A sealing piston (225) is slidably connected to the inner wall of the cylinder (221), and a sliding rod (226) is fixed at the bottom of the sealing piston (225). An extrusion plate (227) is fixed at the bottom of the sliding rod (226).

7. The safety protection electrical control cabinet with emergency handling function as described in claim 6, characterized in that: The power supply component (24) includes a support plate (241) fixed to the inner wall of the cabinet (11), and a support rod (242) is fixed to the top of the support plate (241).

8. The safety protection electrical control cabinet with emergency handling function as described in claim 7, characterized in that: A second electrode plate (244) is provided on the outside of the support rod (242), and a first electrode plate (243) is provided at the bottom of the second electrode plate (244). The first electrode plate (243) is fixed to the top of the support plate (241).

9. The safety protection electrical control cabinet with emergency handling function as described in claim 8, characterized in that: The humidity driving component (23) includes a sliding plate (231) sleeved on the surface of the support rod (242), a return spring (235) fixed at the bottom of the sliding plate (231), the return spring (235) sleeved on the surface of the support rod (242), and a transmission paddle (234) fixed on one side of the sliding plate (231).

10. The safety protection electrical control cabinet with emergency handling function as described in claim 9, characterized in that: The top of the sliding plate (231) is fixed with a storage base (232), and the inner wall of the storage base (232) is filled with a moisture-absorbing ball (233).

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