Maintenance-free moisture absorber

Abstract

A maintenance-free moisture absorber, relating to the technical field of moisture absorbers, and comprising: a moisture absorber (100), comprising a protective cover (101); an air guide pipe (102) disposed at a central position of the inner side of the protective cover (101); a condensing cover (103) disposed at the inner side of the protective cover (101); a moisture absorption tank (104) disposed between the air guide pipe (102) and the condensing cover (103); an air inlet pipe (105) disposed at the top of the condensing cover (103); and a heating plate (106) disposed at the inner side of the moisture absorption tank (104). The air guide pipe (102) is provided with an air inlet channel (1021) running through a side wall thereof; and a humidity sensor and a temperature sensor are mounted at the inner side of the moisture absorption tank (104). On the basis of the moisture level of the moisture absorption tank (104), the internal heating plate (106) is automatically controlled to perform heating and drying, and by means of multi‑point high‑precision temperature sensing feedback, the damp moisture absorption tank (104) is rapidly dehydrated within the limits permitted by intrinsic properties thereof. The present device eliminates the need for periodic inspection, does not require replacement of the moisture absorption tank (104), and supports automatic regeneration for repeated use, thereby saving labor and financial resources.

Description

A maintenance-free dehumidifier Technical Field

[0001] This invention relates to the field of dehumidifier technology, and in particular to a maintenance-free dehumidifier. Background Technology

[0002] Transformers are one of the most basic core equipment in power supply, and their stable and efficient operation plays a vital role in power supply. The transformer breather is an auxiliary safety protection device for the transformer, which is filled with an adsorbent such as silica gel or activated alumina. When silica gel is used as the adsorbent, a portion of color-changing silica gel is often added. When the color-changing silica gel changes from blue to light red, it indicates that the adsorbent has become damp and must be replaced and dried. For the main transformer, replacing the breather silica gel is a regular maintenance task. Technical issues

[0003] Most existing transformers use outdated "oil cup" type breathers, which typically require maintenance every 2 to 4 months in hot and humid environments. Maintenance is even more frequent during the rainy season. Each operation involves cumbersome procedures and complicated procedures, and some transformers even require power outages for maintenance, resulting in huge economic losses. Technical solutions

[0004] In view of the problems existing in the above or prior art, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a maintenance-free dehumidifier, which solves the problem that existing dehumidifiers require regular maintenance during use and are relatively cumbersome to operate.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a maintenance-free dehumidifier, comprising a dehumidifier, including a protective cover, an air guide pipe disposed in the center of the inner side of the protective cover, a condenser shroud disposed inside the protective cover, a dehumidifying tank disposed between the air guide pipe and the condenser shroud, an air inlet pipe disposed on the top of the condenser shroud, and a heating plate disposed inside the dehumidifying tank; the air guide pipe has an air inlet channel penetrating its side wall;

[0007] The breathing unit includes a first plug disposed at the bottom of the air duct, a first sealing gasket disposed on the inner wall of the air duct, a second plug disposed on the inner side of the air intake channel, a second sealing gasket disposed on the inner wall of the air intake channel, and a limiting block disposed on one side of the second sealing gasket.

[0008] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the condenser cover includes a water guide groove disposed at its bottom and a drain pipe that penetrates the protective cover and extends to its outer side;

[0009] The water guide channel is connected to the diversion pipe;

[0010] The air duct is connected to the internal cavity of the protective cover through the air inlet channel.

[0011] The intake pipe includes a one-way diaphragm flap disposed therein.

[0012] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the first plug includes a first spring disposed at its end;

[0013] The sidewall of the first plug contacts the first sealing gasket, and the first plug and the first sealing gasket cooperate to seal the air duct.

[0014] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the second plug includes a trapezoidal block disposed at its end and a second spring disposed on the outside of the second plug;

[0015] One end of the second spring is connected to the second plug, and the other end is connected to the second sealing gasket;

[0016] The second plug moves away from the second sealing gasket under the action of the second spring.

[0017] In a preferred embodiment of the maintenance-free dehumidifier of the present invention, the first plug sidewall is in contact with the trapezoidal block;

[0018] The side wall of the second plug contacts the inner wall of the second sealing gasket; the second plug and the second sealing gasket cooperate to seal the air intake passage.

[0019] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the drainage unit includes a connecting rod, a horizontal spring disposed below the dehumidifying tank, a slider disposed on one side of the horizontal spring, a push rod disposed inside the slider, a fixing block disposed inside the drain pipe, and a partition disposed inside the fixing block.

[0020] As a preferred embodiment of the maintenance-free dehumidifier described in this invention, the horizontal spring is made of copper.

[0021] The slider includes a fixing rod that extends through the inside of the fixing block;

[0022] The push rod includes a third spring disposed on its outer side;

[0023] One end of the third spring is connected to the push rod, and the other end is connected to the slider;

[0024] The fixing block has a through hole inside it.

[0025] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the partition includes a circular hole penetrating its surface and a fourth spring disposed at its end;

[0026] The partition plate and the fixing block are slidably connected;

[0027] The slider and the partition are connected by the fixed rod.

[0028] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the push rod passes through the fixing block and extends to its inner side;

[0029] The through hole and the circular hole are offset from each other;

[0030] The fixing block cooperates with the partition to seal the drainage tube.

[0031] As a preferred embodiment of the maintenance-free dehumidifier of the present invention, the bottom of the horizontal spring contacts the end of the push rod;

[0032] The end of the push rod passes through the slider and extends to its outer side; the end of the connecting rod contacts the side wall of the push rod;

[0033] The circular hole corresponds to the position of the through hole. Beneficial effects

[0034] The beneficial effects of this invention are as follows: Based on the degree of moisture absorption in the moisture-absorbing tank, this invention automatically controls the internal heating plate to heat and dry the tank. Furthermore, through multi-point high-precision temperature sensing feedback, the moisture-absorbing tank is rapidly dehydrated within the limits allowed by its inherent characteristics. The water vapor generated during the dehydration process is condensed and flows down the inner wall of the condenser hood, then discharged to the outside through the drainage pipe at the lower end of the condenser hood, thus achieving the purpose of maintenance-free moisture absorption. This equipment requires no periodic inspection or replacement of the moisture-absorbing tank, and is automatically regenerated and reusable, saving manpower and financial resources. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0036] Figure 1 is a schematic diagram of the structure of a maintenance-free dehumidifier.

[0037] Figure 2 is a partial cross-sectional view of the desiccant in a maintenance-free desiccant.

[0038] Figure 3 is a magnified view of section A in Figure 2 of the maintenance-free dehumidifier.

[0039] Figure 4 is a schematic diagram of the drainage structure of the maintenance-free dehumidifier.

[0040] Figure 5 is a magnified view of section B in Figure 4 of the maintenance-free dehumidifier.

[0041] Figure 6 is a schematic diagram of the exhalation structure of a maintenance-free dehumidifier.

[0042] Figure 7 is a magnified view of section C in Figure 6 of the maintenance-free dehumidifier.

[0043] Figure 8 is an enlarged view of the structure at point D in Figure 6 of the maintenance-free dehumidifier.

[0044] Figure 9 is a cross-sectional orthographic projection view of the maintenance-free dehumidifier.

[0045] Figure 10 is an enlarged view of the structure at point E in Figure 9 of the maintenance-free dehumidifier.

[0046] Figure 11 is an enlarged view of the structure at point F in Figure 9 of the maintenance-free dehumidifier.

[0047] In the diagram: 100, dehumidifier; 101, protective cover; 102, air duct; 1021, air inlet channel; 103, condenser hood; 1031, water guide trough; 1032, drainage pipe; 104, dehumidifier tank; 105, air inlet pipe; 1051, one-way diaphragm flap; 106, heating plate; 200, breathing unit; 201, first plug; 2011, first spring; 202, first sealing gasket; 203, the... 2031, trapezoidal block; 2032, second spring; 204, second sealing gasket; 205, limiting block; 300, drainage unit; 301, connecting rod; 302, horizontal spring; 303, slider; 3031, fixing rod; 304, push rod; 3041, third spring; 305, fixing block; 3051, through hole; 306, partition; 3061, round hole; 3062, fourth spring. Embodiments of the present invention

[0048] 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.

[0049] 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.

[0050] Secondly, the term "an 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 throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0051] Example 1

[0052] Referring to Figures 1 to 5, the first embodiment of the present invention provides a maintenance-free dehumidifier, which includes a dehumidifier 100, comprising a protective cover 101, an air guide pipe 102 disposed in the center of the inner side of the protective cover 101, a condenser cover 103 disposed inside the protective cover 101, a dehumidifying tank 104 disposed between the air guide pipe 102 and the condenser cover 103, an air inlet pipe 105 disposed on the top of the condenser cover 103, and a heating plate 106 disposed inside the dehumidifying tank 104; the air guide pipe 102 has an air inlet channel 1021 penetrating its side wall; a humidity sensor and a temperature sensor are installed inside the dehumidifying tank 104.

[0053] Preferably, the 101 is made of aluminum alloy and features a specially designed rainproof structure with corrosion-resistant, aging-resistant, and high-temperature resistant rubber pads to ensure no water seepage or immersion during rain. The overall protection level reaches IP66. A controller with a display screen is installed on the side wall of the 101. The OLED screen displays information such as air temperature and humidity between the silicone particles, ambient temperature and humidity, and equipment operating status, making the equipment's operating status clear at a glance and facilitating daily inspections by maintenance personnel. At the same time, the controller has switch inputs, an RS485 communication alarm interface, and a wireless communication module, enabling functions such as equipment alarms and workpiece status uploads, achieving centralized intelligent management.

[0054] Meanwhile, special sterilization sintered particles are installed at the bottom of the air guide pipe 102 and the drainage pipe 1032, which have good dustproof, insectproof, antibacterial and mildewproof effects; an air filter component is installed at the bottom of the air guide pipe 102, which can filter more than 97% of the dust entering the transformer, thereby ensuring the long-term cleanliness of the transformer oil.

[0055] The condenser shroud 103 is made of quartz glass, which can effectively prevent the condenser shroud 103 from breaking due to drastic temperature changes;

[0056] The moisture absorption tank 104 is filled with blue silica gel, and has high-precision temperature and humidity sensors at the upper, middle, and lower ends of the silica gel tank and on the outside of the tank. When the weight of the silica gel and the air humidity reach any condition, the equipment will be triggered to dehumidify, ensuring that the air entering the transformer is always in a dry and ideal state.

[0057] Both the temperature and humidity sensors are linearly connected to the controller; the equipment can automatically monitor the silica gel particles and the ambient temperature and humidity, and intelligently adjust the heating and dehumidification mode according to parameter changes, achieving optimal control of air filtration and drying, ensuring the long-term effectiveness of the silica gel particles, and can operate autonomously for many years without manual maintenance, realizing intelligent maintenance-free equipment.

[0058] The air inlet pipe 105 is connected to the moisture absorption tank 104, and the moisture absorption tank 104 is connected to the air guide pipe 102 through the air inlet pipe 105. This ensures that during the air intake process, the air absorbed by the equipment is filtered by the moisture absorption tank 104 before entering the transformer, thus ensuring that the incoming air is dry and has fewer impurities.

[0059] There are multiple sets of heating plates 106, which are arranged in a circular array inside the moisture absorption tank 104. When the silica gel inside the moisture absorption tank 104 is damp, the heating plates 106 can be activated to quickly dry the silica gel.

[0060] Furthermore, the breathing unit 200 includes a first plug 201 disposed at the bottom of the air duct 102, a first sealing gasket 202 disposed on the inner wall of the air duct 102, a second plug 203 disposed on the inner side of the air intake channel 1021, a second sealing gasket 204 disposed on the inner wall of the air intake channel 1021, and a limiting block 205 disposed on one side of the second sealing gasket 204.

[0061] Preferably, the first plug 201 has a frustum-shaped structure, and the first sealing gasket 202 cooperates with the first plug 201 to seal the channel inside the air duct 102, thereby effectively preventing humid air from directly entering the transformer through the air duct 102. The second plug 203 has multiple sets of air holes on the outer circumference of its end, and the limiting block 205 is a symmetrically arranged arc-shaped block structure. This ensures that when the second plug 203 is away from the second sealing gasket 204, a passage can be formed inside the air intake channel 1021, which facilitates air entering the moisture absorption tank 104 through the air intake channel 1021. After being filtered and dried by the moisture absorption tank 104, clean air enters the position above the air duct 102 through the air intake pipe 105, and can then enter the transformer.

[0062] In summary, this device reduces labor and maintenance costs, ensuring safer and more reliable operation of transformers and preventing transformer shutdowns or serious accidents caused by small accessories. Furthermore, the reusability of silica gel granules highlights its environmental benefits, achieving increased production, efficiency, safety, and environmental protection.

[0063] Example 2

[0064] Referring to Figures 1 to 8, this is the second embodiment of the present invention, which differs from the first embodiment in that it further includes, in the previous embodiment, a maintenance-free dehumidifier comprising: a condenser shroud 103 including a water guide groove 1031 disposed at its bottom, and a drain pipe 1032 extending through the protective shroud 101 to its outer side; the water guide groove 1031 and the drain pipe 1032 are connected; the air guide pipe 102 is connected to the internal cavity of the protective shroud 101 through a disposed air inlet channel 1021; and the air inlet pipe 105 includes a one-way flap 1051 disposed inside it.

[0065] Preferably, the water guide trough 1031 is an arc-shaped trajectory with a height difference; the lowest point of the water guide trough 1031 is located at the position where the drain pipe 1032 is connected, thereby ensuring that the condensate slides down the side wall of the condenser cover 103 to the inside of the water guide trough 1031, and then accumulates at the lower position of the water guide trough 1031 under the action of weight; this better facilitates the discharge of condensate through the drain pipe 1032 to the inside of the water guide trough 1031;

[0066] The one-way flap 1051 is located on the inner wall of the air inlet pipe 105. The one-way flap 1051 can ensure that the device opens during the inhalation process, so that air can enter the inner side of the air guide pipe 102 through the air inlet pipe 105; when the device exhales, the one-way flap 1051 closes the air inlet pipe 105, so that the exhaled air is discharged from the device along the air guide pipe 102; thereby effectively preventing the exhaled turbid air from mixing with the inside of the air inlet pipe 105.

[0067] Furthermore, the first plug 201 includes a first spring 2011 disposed at its end; the side wall of the first plug 201 contacts the first sealing gasket 202, and the first plug 201 and the first sealing gasket 202 cooperate to seal the air duct 102.

[0068] Preferably, the first plug 201 is connected to the air duct 102 by a first spring 2011. When the equipment needs to draw in air or is in a stationary state, the channel inside the air duct 102 is closed, and the channel inside the air intake channel 1021 is open. When the side wall of the first plug 201 contacts the first sealing gasket 202, the channel of the air duct 102 can be sealed, thereby effectively preventing air from directly entering the transformer.

[0069] Furthermore, the second plug 203 includes a trapezoidal block 2031 disposed at its end and a second spring 2032 disposed on the outside of the second plug 203; one end of the second spring 2032 is connected to the second plug 203 and the other end is connected to the second sealing gasket 204; the second plug 203 moves away from the second sealing gasket 204 under the action of the second spring 2032.

[0070] Preferably, the second sealing gasket 204 and the limiting block 205 can limit the second plug 203, thereby effectively preventing the second plug 203 from moving to the outside; when inhaling, under the rebound force of the second spring 2032, the second plug 203 is pushed away from the second sealing gasket 204, thereby making the inside of the air intake channel 1021 in a circulating state, so that air can enter the inside of the moisture absorption tank 104 through the air intake channel 1021; at this time, the end of the trapezoidal block 2031 penetrates into the inside of the air guide tube 102.

[0071] Furthermore, the side wall of the first plug 201 contacts the trapezoidal block 2031; the side wall of the second plug 203 contacts the inner wall of the second sealing gasket 204; the second plug 203 and the second sealing gasket 204 cooperate to seal the air intake passage 1021.

[0072] Preferably, during exhalation, the first plug 201 is pressed downward and compresses the first spring 2011. As the first plug 201 moves downward, its bottom can contact the end of the trapezoidal block 2031, thereby pushing the second plug 203 closer to the second sealing gasket 204, causing the side wall of the second plug 203 to contact the inner wall of the second sealing gasket 204, thus closing the passage inside the air intake channel 1021 and effectively preventing exhaled turbid air from entering the inside of the air intake channel 1021.

[0073] In use, when the device needs to inhale, the gas enters the inside of the moisture-absorbing tank 104 through the air inlet channel 1021. The moisture-absorbing tank 104 effectively filters out moisture and impurities from the air. The clean gas then enters the upper air guide pipe 102 through the air inlet pipe 105, and then into the transformer. When the device is in exhalation mode, the exhaled gas pressure is relatively high, squeezing the first plug 201 downwards. The first plug 201 moves downwards, causing its end to move further away from the first plug 201. The first sealing gasket 202 is moved away from the air duct 102, thus forming a flow channel inside the air duct 102. As the first plug 201 moves downward, it squeezes the trapezoidal block 2031. As the trapezoidal block 2031 is compressed, it pushes the second plug 203 to move, causing the second plug 203 to compress the second spring 2032. This causes the side wall of the second plug 203 to contact the inner wall of the second sealing gasket 204, thereby sealing the inside of the air intake channel 1021 and effectively preventing exhaled turbid air from entering the air intake channel 1021.

[0074] Within a fixed time interval: The dehumidifier judges the moisture saturation of the silica gel particles based on the sensor monitoring the particles' moisture absorption. When the saturation reaches the set value, the program automatically activates the heating module to heat the silica gel. When the saturation drops to the set dryness value, the heating module stops. Even if the saturation hasn't reached the set value, the heating element will still operate to dehumidify at the fixed heating time point, with a fixed heating duration. This maximizes the silica gel's moisture absorption capacity, ensuring the dryness of the air entering the transformer, guaranteeing the dehumidifier's reliability, and extending the lifespan of the heating element and silica gel particles. In extremely cold environments, the dehumidifier automatically activates the bottom air inlet heater based on the ambient temperature monitored by the external temperature and humidity sensor, preventing icing at the air inlet. The dehumidifier can be integrated with the transformer's operating principle, autonomously determining the transformer's intake, exhalation, and static states. When the dehumidifier's own monitoring system detects any abnormal operating conditions in the respirator's heating module, heating element, or controller itself, it will automatically issue an alarm signal. The alarm will be sent to the control center via the controller panel's light alarm, alarm switch terminals, and remote wireless network to notify maintenance personnel to handle the fault.

[0075] Example 3

[0076] Referring to Figures 2-5 and 9-11, the third embodiment of the present invention differs from the previous two embodiments in that it includes a drainage unit 300, comprising a connecting rod 301, a horizontal spring 302 disposed below the moisture-absorbing tank 104, a slider 303 disposed on one side of the horizontal spring 302, a push rod 304 disposed inside the slider 303, a fixing block 305 disposed inside the drainage pipe 1032, and a partition 306 disposed inside the fixing block 305.

[0077] Preferably, the connecting rod 301 is located on one side of the end of one of the sets of second plugs 203, and the connecting rod 301 passes through the air guide tube 102 and extends to its outer side; the horizontal spring 302 is horizontally wound below the moisture absorption tank 104 and has a certain elasticity; the slider 303 slides along the bottom of the moisture absorption tank 104; the push rod 304 passes through the slider 303 and extends into its interior; the fixing block 305 set inside the drainage tube 1032 can discharge condensate; at the same time, when the fixing block 305 cooperates with the partition 306, the discharge of condensate can be controlled.

[0078] Furthermore, the horizontal spring 302 is made of copper; the slider 303 includes a fixing rod 3031 that extends through the inside of the fixing block 305; the push rod 304 includes a third spring 3041 disposed on its outer side; one end of the third spring 3041 is connected to the push rod 304, and the other end is connected to the slider 303; the fixing block 305 has a through hole 3051 inside it.

[0079] Preferably, when the horizontal spring 302 is in the coiled state, the gaps between the horizontal springs 302 are small; when the horizontal spring 302 absorbs heat and expands, it can expand outward, fill the cavity inside it, and generate greater pressure; under normal conditions, the push rod 304 is driven to move under the rebound force of the third spring 3041, so that the end of the push rod 304 passes through to the top outside of the slider 303; the fixing block 305 is fixedly set inside the drainage tube 1032; the through hole 3051 opened inside the fixing block 305 can provide a certain space for the condensate to drain.

[0080] Furthermore, the partition 306 includes a circular hole 3061 penetrating its surface and a fourth spring 3062 disposed at its end; the partition 306 is slidably connected to the fixing block 305; the slider 303 is connected to the partition 306 via a fixing rod 3031.

[0081] Preferably, the function of the circular hole 3061 is to ensure that when the circular hole 3061 coincides with the through hole 3051, condensate can flow out through the combined channel; the partition 306 is slidably connected to the fixing block 305, so that the partition 306 can move inside the fixing block 305; the fourth spring 3062, under normal conditions, can push the circular hole 3061 and the through hole 3051 to be misaligned.

[0082] Furthermore, the push rod 304 passes through the fixing block 305 and extends to its inner side; the through hole 3051 and the round hole 3061 are staggered; the fixing block 305 cooperates with the partition 306 to close the drainage tube 1032.

[0083] Preferably, under the rebound force of the third spring 3041, the push rod 304 drives its end to penetrate into the cavity where the horizontal spring 302 is located; under the rebound force of the fourth spring 3062, the partition 306 is pushed to move, thereby causing the round hole 3061 and the through hole 3051 to be misaligned, thus keeping the channel inside the drain pipe 1032 in a closed state; thus effectively preventing air from entering the condenser shroud 103; effectively preventing incompletely filtered air from entering the transformer.

[0084] Furthermore, the bottom of the horizontal spring 302 contacts the end of the push rod 304; the end of the push rod 304 passes through the slider 303 and extends to its outer side; the end of the connecting rod 301 contacts the side wall of the push rod 304; the positions of the round hole 3061 and the through hole 3051 correspond.

[0085] Preferably, after being heated, the horizontal spring 302 expands inside the cavity; this causes the bottom surface of the horizontal spring 302 to move and press the end of the push rod 304, causing the horizontal spring 302 to press the push rod 304. After being pressed, the end of the push rod 304 passes through the slider 303 and extends to its outer side. At this time, when the device is in the exhalation state, the first plug 201 pushes the second plug 203 to move. The movement of the second plug 203 drives the connecting rod 301 connected to its end to move. When the connecting rod 301 moves, its end contacts the side wall of the push rod 304, causing the push rod 304 to move and drive the slider 303 to move. The movement of the slider 303 pushes the partition 306 to move, causing the round hole 3061 to coincide with the position of the through hole 3051. At this time, the inside of the drainage pipe 1032 is in a flowing state, allowing the condensate inside the water guide trough 1031 to be discharged along the drainage pipe 1032.

[0086] When the transformer is in the intake state, the dehumidifier can stop releasing moisture, but it does not affect the normal intake of the transformer; when the transformer is in the exhalation state, the dehumidifier can work normally to release moisture, and then condense the released moisture and discharge it from the respirator canister.

[0087] In summary, based on the degree of moisture absorption in the absorbent can, the internal heating plate is automatically controlled to heat and dry the can. Multi-point high-precision temperature sensing feedback ensures rapid dehydration within the limits allowed by the can's inherent characteristics. Water vapor generated during dehydration is condensed and flows down the inner wall of the condenser hood, then drains to the outside through the drainage pipe at the bottom of the condenser hood, thus achieving maintenance-free moisture absorption. This equipment requires no periodic inspection or replacement of the absorbent can, automatically regenerating and reusing; saving manpower and financial resources.

[0088] Importantly, 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 maintenance-free dehumidifier, characterized in that: include, The dehumidifier (100) includes a protective cover (101), an air guide pipe (102) disposed in the center of the inner side of the protective cover (101), a condenser cover (103) disposed inside the protective cover (101), a dehumidifying tank (104) disposed between the air guide pipe (102) and the condenser cover (103), an air inlet pipe (105) disposed on the top of the condenser cover (103), and a heating plate (106) disposed inside the dehumidifying tank (104); the air guide pipe (102) has an air inlet channel (1021) that penetrates its side wall; a humidity sensor and a temperature sensor are installed inside the dehumidifying tank (104); The breathing unit (200) includes a first plug (201) disposed at the bottom of the air duct (102), a first sealing gasket (202) disposed on the inner wall of the air duct (102), a second plug (203) disposed on the inner side of the air intake channel (1021), a second sealing gasket (204) disposed on the inner wall of the air intake channel (1021), and a limiting block (205) disposed on one side of the second sealing gasket (204).

2. The maintenance-free dehumidifier as described in claim 1, characterized in that: The condenser cover (103) includes a water guide groove (1031) disposed at its bottom, and a drain pipe (1032) that penetrates the protective cover (101) and extends to its outer side. The water guide channel (1031) is connected to the diversion pipe (1032); The air duct (102) is connected to the internal cavity of the protective cover (101) through the air inlet channel (1021); The air intake pipe (105) includes a one-way diaphragm flap (1051) disposed therein.

3. The maintenance-free dehumidifier as described in claim 2, characterized in that: The first plug (201) includes a first spring (2011) disposed at its end; The side wall of the first plug (201) is in contact with the first sealing gasket (202), and the first plug (201) and the first sealing gasket (202) cooperate to seal the air duct (102).

4. A maintenance-free dehumidifier as described in claim 2, characterized in that: The second plug (203) includes a trapezoidal block (2031) disposed at its end, and a second spring (2032) disposed on the outside of the second plug (203); One end of the second spring (2032) is connected to the second plug (203), and the other end is connected to the second sealing gasket (204); The second plug (203) moves away from the second sealing gasket (204) under the action of the second spring (2032).

5. A maintenance-free dehumidifier as described in claim 4, characterized in that: The sidewall of the first plug (201) is in contact with the trapezoidal block (2031); The side wall of the second plug (203) contacts the inner wall of the second sealing gasket (204); the second plug (203) and the second sealing gasket (204) cooperate to seal the air intake channel (1021).

6. A maintenance-free dehumidifier as described in any one of claims 2 to 5, characterized in that: It also includes, The drainage unit (300) includes a connecting rod (301), a horizontal spring (302) disposed below the moisture-absorbing tank (104), a slider (303) disposed on one side of the horizontal spring (302), a push rod (304) disposed inside the slider (303), a fixing block (305) disposed inside the drain pipe (1032), and a partition (306) disposed inside the fixing block (305).

7. A maintenance-free dehumidifier as described in claim 6, characterized in that: The horizontal spring (302) is made of copper; The slider (303) includes a fixing rod (3031) extending through the inside of the fixing block (305); The push rod (304) includes a third spring (3041) disposed on its outer side; One end of the third spring (3041) is connected to the push rod (304), and the other end is connected to the slider (303); The fixing block (305) has a through hole (3051) inside it.

8. A maintenance-free dehumidifier as described in claim 7, characterized in that: The partition (306) includes a circular hole (3061) through its surface and a fourth spring (3062) disposed at its end. The partition (306) is slidably connected to the fixing block (305); The slider (303) and the partition (306) are connected by the fixing rod (3031).

9. A maintenance-free dehumidifier as described in claim 8, characterized in that: The push rod (304) passes through the fixing block (305) and extends to its inner side; The through hole (3051) is offset from the circular hole (3061); The fixing block (305) cooperates with the partition (306) to seal the drainage tube (1032).

10. A maintenance-free dehumidifier as described in claim 8, characterized in that: The bottom of the horizontal spring (302) contacts the end of the push rod (304); The end of the push rod (304) passes through the slider (303) and extends to its outer side; the end of the connecting rod (301) contacts the side wall of the push rod (304); The circular hole (3061) corresponds to the position of the through hole (3051).

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