A humidifier with safe water addition
By setting up a air outlet module and a water level control module in the humidifier to prevent water splashing, the problem of fan damage caused by the failure of the water level detection of the existing humidifier is solved, and the long-term and stable operation of the humidifier is achieved.
Patent Information
- Application Number
- CN202110461545.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-04-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2041-04-27
AI Technical Summary
When the water level detection fails in existing humidifiers, the ultrasonic atomizer causes water to splash, which may damage the fan and cause a short circuit of the humidifier, making it impossible to operate stably for a long time.
A humidifier for safe water addition is designed. By setting up a air outlet module above the ultrasonic atomization water tank, the water level is controlled by using the first pipeline and the drainage module to ensure that the water cannot flow directly into the ultrasonic atomization water tank, and when the water level reaches a certain height, it will be Discharge water to the storage tank to prevent water from splashing.
It effectively prevents the fan short circuit caused by water splashing, ensures the long-term and stable operation of the humidifier, and ensures the controllability of the water level of the ultrasonic atomization water tank and the safe operation of the air outlet module.
Smart Images

Figure CN113048592B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of humidifiers, and in particular to a humidifier capable of safely adding water. Background Art
[0002] At present, household humidifiers on the market generally use ultrasonic waves to atomize water, and blow the atomized water vapor out of the shell through a fan to achieve the effect of humidifying the air. Ultrasonic humidifiers use ultrasonic high-frequency oscillations at a frequency of 1.7MHz to atomize water into ultrafine particles of 1 to 5 microns. By setting up a wind-driven device, the water mist is diffused into the air, making the air moist and accompanied by rich negative oxygen ions, which can refresh the air, promote health, and create a comfortable environment.
[0003] However, the existing humidifier is generally arranged with a fan and an ultrasonic atomizer in sequence, and the output end of the ultrasonic atomizer is arranged above the fan, the input end of the ultrasonic atomizer is connected to a water tank, and a water level detection component is installed in the water tank. When the water tank starts to drain water, the water level in the water tank continues to rise. When it reaches the working water level, the water level detection component is turned on and the machine starts to work; when the water tank is removed, since the water level in the water tank will not drop below the working water level all at once, the water level detection component is still in the turned-on state, and the ultrasonic atomizer in the water tank keeps working. The high-frequency oscillation atomization function of the ultrasonic wave will cause the water in the water tank to splash out, which may cause damage to the fan; what is worse, the humidifier may be scrapped due to a short circuit. Summary of the invention
[0004] Based on this, in order to solve the problem that the existing humidifier cannot handle water splashing and causes a fan short circuit, the present invention provides a humidifier with safe water addition, and its specific technical solution is as follows:
[0005] A humidifier for safe water addition, comprising a humidifier body;
[0006] The humidifier body includes an ultrasonic atomization water tank, a water storage tank, an air outlet module and a water level control module, all of which are arranged in the humidifier body;
[0007] The humidifier body is provided with a water inlet and an exhaust port; the water storage tank is arranged below the water inlet; the ultrasonic atomizing water tank is arranged below the exhaust port; the air outlet module is arranged above the ultrasonic atomizing water tank and below the exhaust port;
[0008] The water level control module includes a first pipeline and a drainage module;
[0009] The two ends of the first pipeline are respectively connected to the ultrasonic atomization water tank and the water storage tank;
[0010] One end of the drainage module is communicated with the lower end of the ultrasonic atomization water tank; the other end of the drainage module is communicated with the water storage tank.
[0011] Compared with the prior art, the beneficial effects of a humidifier with safe water addition provided by the above technical solution include: by arranging the air outlet module above the ultrasonic atomization water tank, the water in the ultrasonic atomization tank cannot leak to the air outlet module, enabling the air outlet module to operate safely; by arranging the first pipeline, the water in the water storage tank can flow into the ultrasonic atomization water tank through the first pipeline only after reaching a certain height, ensuring that when water is added to the water storage tank, the water cannot directly flow into the ultrasonic atomization water tank, preventing the water level in the ultrasonic atomization water tank from suddenly increasing and ensuring the controllability of the water level in the ultrasonic atomization water tank; through the combination of the drainage module, the ultrasonic atomization water tank and the water storage tank, when the water level in the ultrasonic atomization water tank reaches a certain height, the water is discharged to the water storage tank through the drainage module, further ensuring that the air outlet module will not be short-circuited due to water splashing and ensuring that the device can work stably for a long time.
[0012] Further, the air outlet module includes a motor, an impeller part and a housing;
[0013] The motor is provided with a rotating shaft that rotates around the central axis; the impeller part is arranged on one axial side of the motor and is connected to the rotating shaft; the motor and the impeller part are arranged in the housing from bottom to top;
[0014] The housing is fixed above the ultrasonic atomization water tank and is arranged below the exhaust port.
[0015] Further, the impeller part includes a side wall part, an upper wall part and a plurality of fan blades;
[0016] The side wall part is arranged inside the impeller part and rotates around the central axis of the impeller part; the upper wall part is the upper end face axially extending from the side wall part, and the upper wall part is connected to the air guide cover; the plurality of fan blades include a first wing body extending radially outside the side wall part and a plurality of second wing bodies arranged on one axial side of the upper wall part.
[0017] Further, the number of the second wing bodies is set to be odd.
[0018] Further, the first pipeline is arranged in a "冂" - shaped structure.
[0019] Further, the drainage module includes a water level sensor, a water pump, a first valve body, a second pipeline and a second valve body;
[0020] The water level sensor is arranged on the inner wall of the ultrasonic atomizing water tank; the first valve body is arranged at the bottom of the ultrasonic atomizing water tank, and the first valve body is connected to one end of the second pipe; the other end of the second pipe is connected to the input end of the water pump; the output end of the water pump is connected to the second valve body, and the second valve body is arranged on the other side of the water storage tank;
[0021] The water level sensor is electrically connected to the water pump and the first valve body respectively.
[0022] Further, the first valve body is a one-way valve;
[0023] And / or, the second valve body is a one-way valve.
[0024] Furthermore, the humidifier body also includes an air outlet nozzle;
[0025] The air outlet nozzle includes a first air outlet wall and a second air outlet wall, an air flow channel is formed between the first air outlet wall and the second air outlet wall; and shielding ribs are arranged on the upper surface of the second air outlet wall.
[0026] Furthermore, the cross-section of the first air outlet wall is a "1"-shaped structure; and the cross-section of the second air outlet wall is inclined.
[0027] Furthermore, the air outlet is made of transparent hard plastic. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.
[0029] Figure 1 It is a structural schematic diagram of a humidifier with safe water addition according to an embodiment of the present invention;
[0030] Figure 2 It is a cross-sectional schematic diagram of a humidifier for safe water addition according to an embodiment of the present invention;
[0031] Figure 3 It is a schematic diagram of the structure explosion of an air outlet module of a humidifier with safe water addition according to an embodiment of the present invention;
[0032] Figure 4 It is a structural schematic diagram of a shell of a humidifier with safe water addition according to an embodiment of the present invention;
[0033] Figure 5 It is a schematic structural diagram of an impeller portion of a humidifier with safe water addition according to an embodiment of the present invention.
[0034] Description of reference numerals:
[0035] 100-ultrasonic atomizing water tank; 200-water storage tank; 300-air outlet module; 310-motor; 320-impeller; 321-side wall; 322-upper wall; 323-first wing; 324-second wing; 330-housing; 331-outer air guide wall; 332-inner air guide wall; 333-connecting part; 334-air inlet; 400-water level control module; 410 -first pipeline; 420-drainage module; 421-water level sensor; 422-first valve body; 423-water pump; 424-second pipeline; 425-second valve body; 500-air outlet; 510-first air outlet wall; 520-second air outlet wall; 530-shielding rib; 600-water inlet; 610-coil; 620-metal sphere; 700-exhaust port; 800-sterilization and disinfection module. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the protection scope of the present invention.
[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0039] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.
[0040] like Figures 1 to 5 As shown, a humidifier with safe water addition in one embodiment of the present invention includes a humidifier body;
[0041] The humidifier body includes an ultrasonic atomizing water tank 100, a water storage tank 200, an air outlet module 300 and a water level control module 400, all of which are arranged in the humidifier body; the humidifier body is provided with a water inlet 600 and an air outlet 700; the water storage tank 200 is arranged below the water inlet 600; the ultrasonic atomizing water tank 100 is arranged below the air outlet 700; the air outlet module 300 is arranged above the ultrasonic atomizing water tank 100 and below the air outlet 700; the water level control module 400 includes a first pipe 410 and a drainage module 420; the two ends of the first pipe 410 are respectively connected to the ultrasonic atomizing water tank 100 and the water storage tank 200; one end of the drainage module 420 is connected to the lower end of the ultrasonic atomizing water tank 100; the other end of the drainage module 420 is connected to the water storage tank 200.
[0042] By setting the air outlet module 300 above the ultrasonic atomizing water tank 100, the water level of the ultrasonic atomizing water tank cannot reach the air outlet module 300, so that the air outlet module 300 can operate safely; by setting the first pipe 410, the water in the water storage tank 200 can flow into the ultrasonic atomizing water tank 100 through the first pipe 410 only after it reaches a certain height, so as to ensure that when water is added to the water storage tank 200, the water cannot flow directly into the ultrasonic atomizing water tank 100, so that the water level of the ultrasonic atomizing water tank 100 will not increase suddenly, so as to ensure the controllability of the water level in the ultrasonic atomizing water tank 100; by combining the drainage module 420, the ultrasonic atomizing water tank 100 and the water storage tank 200, the water level of the ultrasonic atomizing water tank 100 reaches a certain height and then is drained to the water storage tank 200 through the drainage module 420, so as to further ensure that the air outlet module 300 will not cause a short circuit due to water splashing, so as to ensure that the device can work and use stably for a long time.
[0043] In one embodiment, the air outlet module 300 includes a motor 310, an impeller part 320 and a housing 330; the motor 310 is provided with a rotating shaft rotating around the central axis; the impeller part 320 is arranged on one side of the axial direction of the motor 310 and connected to the rotating shaft; the motor 310 and the impeller part 320 are arranged inside the housing 330 from bottom to top. Further, the housing 330 is fixed above the ultrasonic atomization water tank 100 and is arranged below the exhaust port 700. The gas moves from the bottom of the housing 330 to the top of the housing 330 and overflows from the exhaust port 700.
[0044] Further, the housing 330 includes an outer air guide wall portion 331, an inner air guide wall portion 332 and a plurality of connecting portions 333; the outer air guide wall portion 331 may be cylindrical, and the outer air guide wall portion 331 is arranged radially outside the impeller portion 320; the inner air guide wall portion 332 may be cylindrical, and the outer diameter of the inner air guide wall portion 332 gradually decreases from bottom to top, and the inner air guide wall portion 332 is provided with an air intake port 334. The outer air guide wall portion 331 is connected to the inner air guide wall portion 332 based on the plurality of connecting portions 333. Through the combination of the outer air guide wall portion 331, the inner air guide wall portion 332 and the plurality of connecting portions 333, the air volume and static pressure of the impeller portion 320 are greatly improved, and the exhaust efficiency of the impeller portion 320 is improved.
[0045] Furthermore, by providing the air inlet 334 , wind can flow from the air inlet 334 to the motor 310 , thereby cooling the motor 310 , thereby improving the heat dissipation effect of the device.
[0046] Furthermore, by providing the housing 330, the motor 310 and the impeller 320 in the housing 330 can be effectively protected, preventing the motor 310 and the impeller 320 of the air outlet module 300 from directly contacting the outside and causing damage, thereby effectively ensuring the long-term use of the device.
[0047] In one embodiment, the impeller portion 320 includes a side wall portion 321, an upper wall portion 322 and a plurality of fan blades; the side wall portion 321 is arranged in the impeller portion 320 and rotates around the central axis of the impeller portion 320; the upper wall portion 322 is an upper end surface axially extending from the side wall portion 321, and the upper wall portion 322 is connected to the housing 330; the plurality of fan blades include a first wing body 323 extending radially outward from the side wall portion 321 and a plurality of second wing bodies 324 arranged on one axial side of the upper wall portion 322.
[0048] Further, the second wing 324 is inclined upward on the side wall portion 321 with the rotation axis as the center. Further, the second wing 324 can be curved from the radial inner side to the radial outer side. By configuring the second wing 324 to be curved, it is possible to facilitate the introduction of atomized water droplets processed by the ultrasonic atomization water tank 100. In addition, the second wing 324 is not limited to being configured as a curved surface, and can also be configured to be inclined relative to the central axis of the side wall portion 321.
[0049] In one embodiment, the number of the second wings 324 is set to an odd number.
[0050] Further, the number of the second wing bodies 324 may be different from the number of the first wing bodies 323. In this embodiment, the number of the second wing bodies 324 is 5, and the number of the first wing bodies 323 is 7. By making the number of the second wing bodies 324 different from the number of the first wing bodies 323, the mutual interference between the second wing bodies 324 and the first wing bodies 323 can be suppressed, thereby reducing the occurrence of noise.
[0051] Further, in this embodiment, the structure of the motor 310 is not limited, and the structure of the motor 310 is not the focus of this application. Specifically, reference can be made to the prior art and will not be elaborated here.
[0052] In one embodiment, the first pipe 410 is arranged in a "冂"-shaped structure. When the water in the water storage tank 200 is higher than the highest height of the first pipe 410, the water in the water storage tank 200 can flow from the water storage tank 200 through the first pipe 410 to the ultrasonic atomization water tank 100; when the water in the water storage tank 200 is lower than the highest height of the first pipe 410, the water in the water storage tank 200 cannot flow from the water storage tank 200 through the first pipe 410 to the ultrasonic atomization water tank 100. Thus, the water level in the ultrasonic atomization water tank 100 can be controlled.
[0053] In one embodiment, the drainage module 420 includes a water level sensor 421, a water pump 423, a first valve body 422, a second pipe 424, and a second valve body 425;
[0054] The water level sensor 421 is arranged on the inner wall of the ultrasonic atomization water tank 100; the first valve body 422 is arranged at the bottom of the ultrasonic atomization water tank 100, and the first valve body 422 is connected to one end of the second pipe 424; the other end of the second pipe 424 is connected to the input end of the water pump 423; the output end of the water pump 423 is connected to the second valve body 425, and the second valve body 425 is arranged on the other side of the water storage tank 200; the water level sensor 421 is electrically connected to the water pump 423 and the first valve body 422 respectively. By arranging the drainage module 420, it is effectively ensured that the water in the ultrasonic atomization water tank 100 can never reach the lowermost end of the air outlet module 300, effectively ensuring the normal long-term operation of the air outlet module 300.
[0055] Working principle: When the water in the ultrasonic atomization water tank 100 reaches the position of the water level sensor 421, the water level sensor 421 provides information to the water pump 423 and the first valve. At this time, the first valve opens, and the water pump 423 starts to work, pumping the water in the ultrasonic atomization water tank 100 to the water storage tank 200. When the water in the ultrasonic atomization water tank 100 does not reach the position of the water level sensor 421, the water pump 423 does not work, and the first valve is in a closed state.
[0056] In one embodiment, the first valve body 422 is a one-way valve; and / or the second valve body 425 is a one-way valve.
[0057] In one embodiment, the humidifier body also includes an air outlet nozzle 500; the air outlet nozzle 500 includes a first air outlet wall 510 and a second air outlet wall 520, and an air flow channel is formed between the first air outlet wall 510 and the second air outlet wall 520; a shielding rib 530 is provided on the upper surface of the second air outlet wall 520.
[0058] Furthermore, the second air outlet wall 520 is disposed above the first air outlet wall 510 and the end of the second air outlet wall 520 is disposed away from the first air outlet wall 510. During long-term use of the device, a certain amount of water droplets will accumulate in the air outlet nozzle 500 due to the mist, and there is a risk that large particles of water droplets will fall vertically to the air outlet module 300, which may cause a safety hazard to the device; at the same time, it is prevented that some users directly add water to the air outlet nozzle 500, causing water to pour directly from the air outlet nozzle 500 and cause electrical accidents.
[0059] In one embodiment, the cross section of the first air outlet wall 510 is a "1"-shaped structure; the cross section of the second air outlet wall 520 is inclined. Through this arrangement, water drops at the outermost end of the air outlet nozzle 500 drip outside the device.
[0060] In one embodiment, the air outlet nozzle 500 is made of transparent hard plastic.
[0061] Furthermore, the use of hard plastic is conducive to reducing its production cost. By selecting transparent hard plastic, the user can observe whether the air outlet module 300 operates normally through the air outlet nozzle 500, and can also observe whether the ultrasonic atomization water tank 100 operates normally.
[0062] Furthermore, the water injection port 600 is set to a truncated cone structure, and the upper end of the water injection port 600 is larger than the lower end. The upper end of the water injection port is provided with a sealed coil 610, and a metal ball 620 is provided between the upper end and the lower end of the water injection port 600. The diameter of the metal ball 620 is larger than the diameter of the lower end of the water injection port 600. When the coil 610 is energized, the coil 610 attracts the metal ball 620, so that the metal ball 620 is adsorbed at the coil 610. At this time, the user can add water to the water storage tank 200 through the water injection port 600; when the coil 610 is not energized, the coil 610 cannot adsorb the metal ball 620, and the metal ball 620 slides down due to gravity, and finally just seals the water injection port 600. At this time, the user cannot add water to the water storage tank 200. This setting can effectively prevent malicious water addition to the device, and effectively ensure the safe use of the device.
[0063] Furthermore, the humidifier body further includes a sterilization module 800, which is disposed above the ultrasonic atomization water tank 100. Specifically, the sterilization module 800 is an ultraviolet disinfection lamp, which is used to sterilize and disinfect the water in the ultrasonic atomization water tank 100.
[0064] Furthermore, in this embodiment, ultraviolet disinfection lamps are common knowledge and can be purchased at any place on the market. They are not the focus of this application. For details, please refer to the prior art and will not be described in detail here.
[0065] To sum up: by setting the air outlet module 300 above the ultrasonic atomizing water tank 100, the water in the ultrasonic atomizing water tank cannot leak to the air outlet module 300, so that the air outlet module 300 can operate safely; by setting the first pipe 410, the water in the water storage tank 200 can flow into the ultrasonic atomizing water tank 100 through the first pipe 410 only after it reaches a certain height, so as to ensure that when water is added to the water storage tank 200, the water cannot flow directly into the ultrasonic atomizing water tank 100, so that the water level of the ultrasonic atomizing water tank 100 will not increase suddenly, so as to ensure the controllability of the water level in the ultrasonic atomizing water tank 100; by combining the drainage module 420, the ultrasonic atomizing water tank 100 and the water storage tank 200, the water level of the ultrasonic atomizing water tank 100 reaches a certain height and is drained to the water storage tank 200 through the drainage module 420, further ensuring that the air outlet module 300 will not cause a short circuit due to water splashing, and ensuring that the device can work and use stably for a long time.
[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0067] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
Claims
1. A humidifier with safe water addition, characterized in that: It includes a humidifier body; The humidifier body comprises an ultrasonic atomizing water tank, a water storage tank, an air outlet module and a water level control module, all of which are arranged in the humidifier body; the humidifier body is provided with a water filling port and an air outlet; the water storage tank is arranged below the water filling port; the ultrasonic atomizing water tank is arranged below the air outlet; the air outlet module is arranged above the ultrasonic atomizing water tank and below the air outlet; the water level control module comprises a first pipeline and a drainage module; the two ends of the first pipeline are respectively connected to the ultrasonic atomizing water tank and the water storage tank; one end of the drainage module is connected to the lower end of the ultrasonic atomizing water tank; the other end of the drainage module is connected to the water storage tank; the air outlet module comprises a motor, an impeller part and The motor is provided with a rotating shaft rotating about a central axis; the impeller part is arranged on one axial side of the motor and connected to the rotating shaft; the motor and the impeller part are arranged inside the housing from bottom to top; the housing is fixed above the ultrasonic atomizing water tank and arranged below the exhaust port; the impeller part comprises a side wall part, an upper wall part and a plurality of fan blades; the side wall part is arranged inside the impeller part and rotates about the central axis of the impeller part; the upper wall part is an upper end surface of the side wall part extending axially, and the upper wall part is connected to the air guide cover; a plurality of the fan blades comprise a first wing body extending radially outwardly of the side wall part and a plurality of second wing bodies arranged on one axial side of the upper wall part; The housing comprises an outer air guide wall portion, an inner air guide wall portion and a plurality of connecting portions; the outer air guide wall portion may be cylindrical and arranged radially outside the impeller portion; the inner air guide wall portion may be cylindrical and the outer diameter of the inner air guide wall portion gradually decreases from bottom to top, and an air inlet is arranged on the inner air guide wall portion; the outer air guide wall portion is connected to the inner air guide wall portion based on the plurality of connecting portions; The drainage module includes a water level sensor, a water pump, a first valve body, a second pipe and a second valve body; the water level sensor is arranged on the inner wall of the ultrasonic atomization water tank; the first valve body is arranged at the bottom of the ultrasonic atomization water tank, and the first valve body is connected to one end of the second pipe; the other end of the second pipe is connected to the input end of the water pump; the output end of the water pump is connected to the second valve body, and the second valve body is arranged on the other side of the water storage tank; the water level sensor is electrically connected to the water pump and the first valve body respectively; The water injection port is arranged as a truncated cone structure, and the upper end of the water injection port is larger than the lower end, a sealing coil is arranged at the upper end of the water injection port, a metal sphere is arranged between the upper end and the lower end of the water injection port, and the diameter of the metal sphere is larger than the diameter of the lower end of the water injection port; when the coil is energized, the coil attracts the metal sphere so that the metal sphere is adsorbed on the coil, and the user can add water to the water tank through the water injection port; when the coil is not energized, the coil cannot adsorb the metal sphere, and the metal sphere slides downward due to gravity, and finally seals the water injection port.
2. A humidifier with safe water addition according to claim 1, characterized in that: The number of the second wing bodies is set to be an odd number.
3. A humidifier with safe water addition according to claim 1, characterized in that: The first pipe is set to have a "冂"-shaped structure.
4. A humidifier with safe water addition according to claim 1, characterized in that: The first valve body is a one-way valve; and / or, the second valve body is a one-way valve.
5. A humidifier with safe water addition according to claim 1, characterized in that: The humidifier body further includes an air outlet nozzle; The air outlet nozzle includes a first air outlet wall and a second air outlet wall, and an air flow channel is formed between the first air outlet wall and the second air outlet wall; a shielding rib is arranged on the upper surface of the second air outlet wall.
6. A humidifier with safe water addition according to claim 5, characterized in that: The cross section of the first air outlet wall is of a "1"-shaped structure; the cross section of the second air outlet wall is inclined.
7. A humidifier with safe water addition according to claim 6, characterized in that: The air outlet nozzle is made of transparent hard plastic.
Citation Information
Patent Citations
Upper water adding ultrasonic humidifier
CN106969461A
Engine base and humidifier
CN110887148A
Ultrasonic atomization device
CN111609490A
Wall-mounted type full-automatic serial-connection water supply humidifier
CN203116216U
Bed unit ozone disinfection machine
CN210267609U
