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CN109520059B - Upper water adding humidifier and water adding protection device thereof - Google Patents

Upper water adding humidifier and water adding protection device thereof Download PDF

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Publication number
CN109520059B
CN109520059B CN201811630187.8A CN201811630187A CN109520059B CN 109520059 B CN109520059 B CN 109520059B CN 201811630187 A CN201811630187 A CN 201811630187A CN 109520059 B CN109520059 B CN 109520059B
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CN
China
Prior art keywords
water
guide pipe
sealing
mist
top cover
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Active
Application number
CN201811630187.8A
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Chinese (zh)
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CN109520059A (en
Inventor
李一峰
黎鉴池
梁海权
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Bear Electrical Appliance Co Ltd
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Bear Electrical Appliance Co Ltd
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Priority to CN201811630187.8A priority Critical patent/CN109520059B/en
Publication of CN109520059A publication Critical patent/CN109520059A/en
Application granted granted Critical
Publication of CN109520059B publication Critical patent/CN109520059B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00Air-humidification, e.g. cooling by humidification
    • F24F6/12Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Air Humidification (AREA)

Abstract

The invention discloses an upper water adding humidifier and a water adding protection device thereof. The water-adding protection device comprises: a sealing cover (51) capable of sealing the top end of the mist guide pipe (2), wherein the sealing cover (51) is provided with a first state in which water cannot be poured into the mist guide pipe (2) when water is added by covering the top end of the mist guide pipe (2) and a second state in which the water cannot be covered on the top end of the mist guide pipe (2); and a switching mechanism connected with the sealing cover (51), wherein the switching mechanism enables the sealing cover (51) to switch from a first state to a second state when the water tank top cover (3) is covered on the water tank (12), and enables the sealing cover (51) to switch from the second state to the first state when the water tank top cover (3) is opened from the water tank (12). Can guarantee through adding water protection device that the user can not pour water into when adding water and lead fog intraductally so that the circuit board in the protection humidifier base can not advance the water damage, can not take place the electric leakage risk.

Description

Upper water adding humidifier and water adding protection device thereof
Technical Field
The invention relates to a household appliance, in particular to an upper water adding humidifier and a water adding protection device thereof.
Background
The existing upper water adding type ultrasonic humidifier (called as an upper water adding humidifier for short) directly opens a top cover of the water tank, and water is added by pouring water into the water tank from top to bottom, so that the operation is convenient and fast, and the device is loved by wide users.
However, the existing upper water adding humidifier has hidden trouble when water is added: the user is in the water adding process and is directly in the fog outlet water adding, and a large amount of water flows back to the inside of the base of the humidifier after entering from the fog guide pipe, so that partial functional failure or possible electric leakage danger in the base of the humidifier is easily caused, and the safe use of the user is influenced. In order to avoid that a user does not pour water into the mist outlet or the mist guide pipe when adding water, the existing water adding humidifier often prints water adding prompt characters on a top cover of the humidifier so as to guide the user to finish correct water adding operation. However, the water-adding guidance prompt on the existing product cannot fundamentally solve the potential hidden trouble caused by the fact that the user may have an incorrect water adding mode.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an upper water adding humidifier and a water adding protection device thereof.
The invention is realized by adopting the following technical scheme: a water addition protection device for an upper water addition humidifier, the water addition protection device comprising: the sealing cover is provided with a first state and a second state, wherein the first state is used for sealing the top end of the mist guide pipe, so that water cannot be poured into the mist guide pipe when the water tank is filled with water, and the second state is used for not sealing the top end of the mist guide pipe; and the switching mechanism is connected with the sealing cover, and is used for switching the sealing cover from the first state to the second state when the water tank top cover is covered on the water tank and switching the sealing cover from the second state to the first state when the water tank top cover is opened from the water tank.
Wherein, the switching mechanism includes: a dowel bar with a first end rotatably connected with the mist guide pipe and a second end connected with the sealing cover; an elastic element arranged on the force transmission rod and generating an upward restoring elastic force to the force transmission rod; and the pressing part can be contacted with the second end of the sealing cover or the dowel bar, and when the water tank top cover is covered on the water tank, the pressing part applies a downward pressing force which is larger than the upward restoring elastic force to the second end of the sealing cover or the dowel bar.
Wherein, be equipped with the pipe top cap that leads fog in pipe top, be equipped with the water smoke through-hole on this pipe top cap that leads fog, sealed lid links to each other with the water smoke through-hole is sealed when first state and is not sealed with the water smoke through-hole and link to each other when the second state.
Wherein, the pore wall periphery downwardly extending of water smoke through-hole is equipped with down protruding sealing washer, and the lower extreme periphery of sealed lid is equipped with sealed shirt rim to outside extension, and sealed shirt rim contacts with protruding sealing washer down when sealed lid is in the first state.
The first end of the dowel bar is rotatably connected to the lower side of the top cover of the mist guide pipe, and the second end of the dowel bar is fixedly connected to the lower side of the sealing cover.
Wherein, the downside of leading fog pipe top cap is equipped with a set of supporting seat, is equipped with the pin joint shaft hole on every supporting seat, and the first end of dowel steel is equipped with the pivot, and the end of this pivot is located in the pin joint shaft hole.
The elastic element is a torsion spring, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is abutted against the lower side surface of the top cover of the mist guide pipe, and the other end of the torsion spring is fixed at the first end of the dowel bar; or the elastic element is a tension spring, one end of the tension spring is fixed on the lower side surface of the top cover of the mist guide pipe, and the other end of the tension spring is fixed on the dowel bar.
Wherein, the periphery of sealed lid is equipped with the bellying, and the lower extreme periphery of water smoke through-hole is equipped with the constant head tank that can hold the bellying, and the bellying is located among the constant head tank when sealed lid covers the water smoke through-hole.
The pressing part comprises a driving part which is arranged to extend downwards from the lower side surface of the top cover body of the water tank top cover, and when the water tank top cover is covered on the water tank, the driving part touches the sealing cover and generates downward pressing force which is larger than upward restoring elastic force on the sealing cover.
The lower side face of the fog guide pipe top cover is provided with a sealing groove, a sealing element is arranged in the sealing groove, and the top end of the fog guide pipe is arranged in the sealing groove.
Wherein, lead fog pipe top cap and lead fog pipe and be integrated into one piece structure.
The driving part is tubular, and the middle part of the driving part is provided with a shaft hole communicated with the fog outlet.
The invention discloses an upper water adding humidifier which comprises a water tank, a water tank top cover capable of being covered on the water tank, an atomization cavity arranged on the lower side of the water tank, a mist guide pipe arranged in the water tank and the lower end of the mist guide pipe is communicated with the atomization cavity, a water tank top cover capable of being covered on the water tank and the water adding protection device.
The invention substantially solves the technical problem that the prior upper water adding humidifier is easy to cause wrong water adding to use potential safety hazards when adding water, and correspondingly achieves the following beneficial effects:
the invention can fundamentally solve the potential hidden trouble brought by incorrect water adding mode possibly existing in users by arranging the water adding protection device: when the top cover of the water tank is opened (uncovered) from the water tank, the sealing cover can be automatically switched from the second state to the first state for closing and sealing the water mist through hole cover, so that a user is ensured not to introduce the guide base when adding water, and the circuit board in the humidifier base is protected from water inlet damage and no leakage risk; when the water tank top cover is covered, the sealing cover can be automatically switched from the first state to the second state, so that water mist can smoothly flow from the mist guide pipe to the mist outlet of the water tank top cover, and further, the smooth mist outlet of the humidifier is ensured; furthermore, the sealing cover added at the top end of the mist guide pipe is also beneficial to preventing foreign matters from entering the mist guide pipe when the top cover of the water tank is opened. Furthermore, the water-adding protection device has simple integral structure, the state of the top cover of the mist guide pipe is freely switched, and the movement is stable and reliable.
Drawings
Fig. 1 is a schematic diagram of the internal structure of an add-on humidifier, and arrows shown by broken lines indicate the movement paths of wind and water mist.
Fig. 2 is a schematic diagram of an exploded structure of the add-on humidifier.
Fig. 3 is a schematic exploded view of the water-adding protecting device.
Fig. 4 is a schematic structural view of the sealing cover covering and sealing the water mist through hole on the top cover of the mist guide pipe.
Fig. 5 is a schematic view of the structure in which the sealing cover does not seal the mist through hole of the mist guide pipe top cover.
Fig. 6 is a schematic view of the structure of the tank top cover separated from the tank.
Fig. 7 is a schematic view of the structure of the tank top cover when it is covered on the tank.
Detailed Description
In order to further describe the technical means and effects adopted by the present application to achieve the preset purpose, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the present application with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The upper water adding humidifier (also referred to as a "humidifier") shown in fig. 1 comprises a base 11, an open water tank 12 arranged on the base 11, an atomization cavity 13 arranged outside the bottom of the water tank 12, a drain assembly 14 arranged between the atomization cavity 13 and the bottom of the water tank 12, an atomization element 15 arranged at the bottom of the atomization cavity 13 (the atomization element 15 generally uses an ultrasonic transducer), a fan 16 arranged in the base 11, a mist guide pipe 2 arranged in the water tank 12 and the lower end of which is communicated with the atomization cavity 13, and an air guide channel 17 arranged outside the mist guide pipe 2, wherein the lower end of the air guide channel 17 is communicated with an air outlet of the fan 16, and the upper end of the air guide channel 17 is communicated with the mist guide pipe 2. The water in the water tank 12 flows into the atomizing cavity 13 through the water discharging component 14, and after the atomizing element 15 is electrified, mechanical vibration is generated to vibrate the water in the atomizing cavity 13 to generate water mist, and the water mist is gathered in the space above the atomizing cavity 13 and then enters the mist guide pipe 2; meanwhile, the air flow generated by the fan 16 blows from the air guide channel 17 to the mist guide pipe 2, so that the air flow drives the water mist to be sprayed out from the top end of the mist guide pipe 2.
The sewage component is in the prior art, and specific implementation means can be referred to technical schemes disclosed in Chinese patent application CN2017101881397 or CN2017110347568 and other documents. For example, the drain assembly of the present invention includes: the water tank 12 is provided with a water outlet at the bottom, a water valve in the water outlet, a floating ball in the atomization cavity 13 and a lever connected between the floating ball and the water valve, wherein one end of the lever is connected with the floating ball, and the other end of the lever is connected with the water valve. Therefore, when the water level in the atomizing cavity 13 reaches the preset water level, the floating ball moves upwards under the action of buoyancy force, so that the water valve is driven to move downwards through the lever to seal the water outlet, and the water in the water tank 12 cannot flow into the atomizing cavity 13; conversely, when the water level in the atomizing cavity 13 drops, the floating ball descends along with the water level, and the lever drives the water valve to move upwards to enable the water valve to be separated from the water outlet, so that water in the water tank 12 flows into the atomizing cavity 13 through the water outlet, and an automatic water discharging function is realized.
Because the water tank 12 is open, the user can directly feed water into the water tank 12 from top to bottom. Therefore, a water tank top cover 3 is further provided on top of the water tank 12, and the water tank top cover 3 includes a top cover body 31 and a mist outlet 32 provided on the top cover body 31 and communicating with the mist guide pipe 2. Therefore, the mist is sprayed from the top of the mist guide pipe 2 through the mist outlet 32 to humidify the environment.
As shown in connection with fig. 2-7. In order to prevent a user from pouring water into the mist guide pipe 2 by mistake when adding water to the water tank 12, the upper water adding humidifier of the present invention further includes a water adding protection device including: a sealing cover 51 capable of sealing the tip of the mist guide pipe 2, the sealing cover 51 having a first state (shown in fig. 4 and 7) in which water cannot be poured into the mist guide pipe 2 when water is added by covering the tip of the mist guide pipe 2, and a second state (shown in fig. 5 and 6) in which water mist can smoothly flow from the mist guide pipe 2 to the mist outlet 32 by not covering the tip of the mist guide pipe 2; and a switching mechanism connected with the sealing cover 51, wherein the switching mechanism enables the sealing cover 51 to be switched from a first state to a second state to provide guarantee for smooth mist outlet when the water tank top cover 3 is covered on the water tank 12, and enables the sealing cover 51 to be switched from the second state to the first state when the water tank top cover 3 is opened from the water tank 12, so that water or sundries cannot enter the mist guide pipe 2.
Specifically, the switching mechanism includes: a dowel bar 52 rotatably connected at a first end to the mist guide pipe 2 and connected at a second end to the seal cover 51; an elastic member 54 provided on the force transmission rod 52 and generating an upward restoring elastic force to the force transmission rod 52; a pressing portion which is provided in contact with the second end of the seal cover 51 or the dowel 52, and which applies a downward pressing force to the second end of the seal cover 51 or the dowel 52 that is greater than the upward restoring force when the tank top cover 3 is closed on the tank 12. In one embodiment, the pressing part includes a driving part 33 extending downward from the lower side surface of the top cover body 31, when the water tank top cover 3 is covered on the water tank 12, the lower end of the driving part 33 is inserted into the mist guide pipe 2, and the driving part 33 does not block the water mist from flowing from the mist guide pipe 2 to the mist outlet 32, for example, the driving part 33 is tubular and the middle shaft hole of the driving part 33 is communicated with the mist outlet 32, so that the water mist in the mist guide pipe 2 directly flows to the mist outlet 32 through the driving part 33.
In one embodiment, a mist guide pipe top cover 4 is arranged at the top end of the mist guide pipe 2, a mist through hole 41 for providing mist flowing from the mist guide pipe 2 to the mist outlet 32 is arranged on the mist guide pipe top cover 4, and the sealing cover 51 is in sealing connection with the mist through hole 41 in a first state and is not in sealing connection with the mist through hole 41 in a second state.
In one embodiment, the lower side of the mist guide pipe top cover 4 is provided with a set of support seats 42, each support seat 42 is provided with a pivot shaft hole 421, and the first end of the dowel bar 52 is provided with a rotating shaft 53, and the end of the rotating shaft 53 is located in the pivot shaft hole 421, so that the dowel bar 52 can rotate in the pivot shaft hole 421 according to the rotating shaft 53 to rotate upwards or downwards relative to the lower side of the mist guide pipe top cover 4.
In one embodiment, the elastic element 54 is a torsion spring, which is sleeved on the rotating shaft 53, one end of the torsion spring abuts against the lower side surface of the mist guide pipe top cover 4, and the other end of the torsion spring is fixed at the first end of the dowel 52. For this purpose, a fixing groove 521 is provided at the first end of the dowel 52, and one end of the torsion spring is fixed in the fixing groove 521. Thus, the torsion spring generates an upward restoring force to the first end of the dowel 52, which forces the sealing cap 51 to seal the mist through hole 41 by the dowel 52.
In one embodiment, the elastic element 54 is a tension spring, one end of which is fixed to the lower side of the mist guide pipe top cover 4, and the other end of which is fixed to the dowel 52. Thus, the tension spring generates an upward restoring spring force to the dowel bar 52, and the upward restoring spring force enables the sealing cover 51 to cover and seal the water mist through hole 41 through the dowel bar 52.
In one embodiment, in order to improve the sealing performance of sealing the sealing member 51 in the first state in sealing connection with the mist through hole 41, the hole wall periphery of the mist through hole 41 is provided with a downward protruding sealing ring 411 extending downward, and the lower end periphery of the sealing member 51 is provided with a sealing skirt 511 extending outward, and the sealing skirt 511 is in contact with the downward protruding sealing ring 411 when the sealing member 51 is in the first state.
In one embodiment, the peripheral edge of the sealing skirt 511 is provided with a boss 512 and the lower male seal 411 is provided with a locating recess which accommodates the boss 512, such that the boss 512 is located in the locating recess when the sealing cap 51 is in the first condition.
In one embodiment, the lower side of the mist guide pipe top cover 4 is provided with a sealing groove 43, a sealing element (such as a silica gel strip) is arranged in the sealing groove 43, and the top end of the mist guide pipe 2 is inserted into the sealing groove 43 so as to realize that the mist guide pipe top cover 4 is sealed at the top end of the mist guide pipe 2. Even, in order to facilitate the fixing of the mist guide pipe top cover 4 at the top end of the mist guide pipe 2, a guide post 44 is arranged on the lower side surface of the mist guide pipe top cover 4, and the mist guide pipe top cover 4 is fixed at the top end of the mist guide pipe 2 along the inner side wall of the mist guide pipe 2 through the guide post 44; a fixing structure is further arranged between the lower side surface of the mist guide pipe top cover 4 and the mist guide pipe 2, for example, a buckling part 45 with a buckle hole is arranged on the lower side surface of the mist guide pipe top cover 4, and a convex buckle is arranged on the mist guide pipe 2, and the mist guide pipe top cover 4 is firmly fixed at the top end of the mist guide pipe 2 through the buckle hole and the buckle of the buckling part 45. Of course, the mist guide pipe top cover 4 and the mist guide pipe 2 may be integrally formed.
When water is required to be added into the water tank 12, the water tank top cover 3 is uncovered from the top end of the water tank 12, and at this time, the upward restoring elastic force generated by the elastic element 54 enables the sealing cover 51 to cover and seal the water mist through hole 41 through the dowel bar 52, so that when a user pours water into the water tank 12, the water cannot enter the mist guide pipe 2 due to the fact that the sealing cover 51 covers and seals the water mist through hole 41, the water is prevented from flowing into the base 11 through the air guide channel 17 after entering from the mist guide pipe 2, the effect of protecting a circuit board in the base 11 is achieved, and the leakage risk is avoided.
Referring to fig. 7, after the water is added to the water tank 12, the top cover 3 of the water tank is covered on the top end of the water tank 12, the lower end of the driving part 33 just abuts against the sealing cover 51 to generate a downward covering force on the sealing cover 51, when the covering force is greater than an upward restoring force generated by the elastic element 54, the lower end of the driving part 33 pushes the sealing cover 51 downward, the sealing cover 51 drives the first end of the dowel bar 52 to rotate in the pivot shaft hole 421 by the rotating shaft 53, so that the sealing cover 51 does not cover and seal the water mist through hole 41 any more, and at this time, the lower end of the driving part 33 is inserted into the mist guide pipe 2, so that the water mist in the mist guide pipe 2 can smoothly flow to the mist outlet 32.
It can be seen that when the water tank top cover 3 is uncovered from the water tank 12, the sealing cover 51 can be automatically switched to a first state (as shown in fig. 4 and 7) for sealing the water mist through holes 41, so that the guide base 11 is not guided when a user adds water, and the humidifier is protected; when the water tank top cover 3 is covered on the water tank 12, the sealing cover 51 can be automatically switched to a second state (shown in fig. 5 and 6) in which the water mist through holes 41 are not covered and sealed, so that the humidifier can work normally and mist can be discharged.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (8)

1. The utility model provides a water adding protection device of upper water adding humidifier which characterized in that, this water adding protection device includes:
a sealing cover (51) capable of sealing the top end of the mist guide pipe (2), wherein the sealing cover (51) is provided with a first state in which water cannot be poured into the mist guide pipe (2) when the water supply tank (12) is filled with water by covering the top end of the mist guide pipe (2) and a second state in which the water cannot be covered on the top end of the mist guide pipe (2);
a switching mechanism connected to the seal cover (51), the switching mechanism switching the seal cover (51) from a first state to a second state when the tank top cover (3) is closed to the tank (12), and switching the seal cover (51) from the second state to the first state when the tank top cover (3) is opened from the tank (12);
the switching mechanism includes: a dowel bar (52) with a first end rotatably connected with the mist guide pipe (2) and a second end connected with the sealing cover (51); an elastic element (54) provided on the force transmission rod (52) and generating an upward restoring elastic force to the force transmission rod (52); a pressing part which can be contacted with the second end of the sealing cover (51) or the dowel bar (52), and when the water tank top cover (3) is covered on the water tank (12), the pressing part applies a downward pressing force which is larger than upward restoring elasticity to the second end of the sealing cover (51) or the dowel bar (52);
a mist guide pipe top cover (4) is arranged at the top end of the mist guide pipe (2), a water mist through hole (41) is arranged on the mist guide pipe top cover (4), a sealing cover (51) is in sealing connection with the water mist through hole (41) in a first state, and is not in sealing connection with the water mist through hole (41) in a second state;
a fixing structure is further arranged between the lower side surface of the fog guide pipe top cover (4) and the fog guide pipe (2), so that the fog guide pipe top cover (4) is fixed at the top end of the fog guide pipe (2).
2. The water supply protection device of the upper water supply humidifier according to claim 1, wherein the hole wall periphery of the water mist through hole (41) is provided with a downward protruding sealing ring (411) extending downward, and the lower end periphery of the sealing cover (51) is provided with a sealing skirt (511) extending outward, and the sealing skirt (511) is in contact with the downward protruding sealing ring (411) when the sealing cover (51) is in the first state.
3. The water supply protection device of the upper water supply humidifier according to claim 1, wherein the dowel bar (52) is provided in a U shape, a first end of the dowel bar (52) is rotatably connected to the lower side of the top cover (4) of the mist guide pipe, and a second end of the dowel bar is fixedly connected to the lower side of the sealing cover (51).
4. The water supply protection device of the upper water supply humidifier according to claim 1, wherein a group of supporting seats (42) are arranged on the lower side surface of the top cover (4) of the mist guide pipe, a pivot shaft hole (421) is arranged on each supporting seat (42), a rotating shaft (53) is arranged at the first end of the dowel bar (52), and the end of the rotating shaft (53) is positioned in the pivot shaft hole (421).
5. The water adding protector of the upper water adding humidifier according to claim 2, wherein the elastic element (54) is a torsion spring, the torsion spring is sleeved on the rotating shaft (53), one end of the torsion spring is abutted against the lower side surface of the top cover (4) of the mist guide pipe, and the other end of the torsion spring is fixed at the first end of the dowel bar (52); or the elastic element (54) is a tension spring, one end of which is fixed on the lower side surface of the fog guide tube top cover (4), and the other end of which is fixed on the dowel bar (52).
6. The water supply protection device of the upper water supply humidifier according to claim 1, wherein a sealing groove (43) is arranged on the lower side surface of the mist guide pipe top cover (4), a sealing element is arranged in the sealing groove (43), and the top end of the mist guide pipe (2) is arranged in the sealing groove (43).
7. The water supply protection device of an upper water supply humidifier according to any one of claims 1 to 6, wherein the pressing portion includes a driving portion (33) extending downward from a lower side surface of the top cover body (31) of the tank top cover (3), and the driving portion (33) is capable of touching the sealing cover (51) and generating a downward pressing force greater than an upward restoring force to the sealing cover (51) when the tank top cover (3) is covered on the tank (12).
8. An upper water adding humidifier, which comprises a water tank (12), a water tank top cover (3) capable of being covered on the water tank (12), an atomization cavity (13) arranged at the lower side of the water tank (12), a mist guide pipe (2) arranged in the water tank (12) and the lower end of which is communicated with the atomization cavity (13), and the water tank top cover (3) capable of being covered on the water tank (12), and is characterized by further comprising a water adding protection device of the upper water adding humidifier according to any one of claims 1-7.
CN201811630187.8A 2018-12-28 2018-12-28 Upper water adding humidifier and water adding protection device thereof Active CN109520059B (en)

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CN109520059B true CN109520059B (en) 2024-02-13

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Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN110186139A (en) * 2019-05-29 2019-08-30 深圳市晨北科技有限公司 A kind of water-tight device and humidifier
CN118208789B (en) * 2024-03-01 2024-08-13 南通市传染病防治院(南通市第三人民医院) Humidification device and method for preventing respiratory diseases

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