Home Air Treatment Devices

Abstract

The present invention relates to a domestic air treatment device for adapting air humidity, comprising: a base unit including an air displacement device, a power source, and a base unit air duct having a base unit air inlet and a base unit air outlet, the air displacement device being arranged to provide air flow from the base unit air inlet to the base unit air outlet through the base unit air duct; an ultrasonic unit including a power input removably coupled to the power source of the base unit, a liquid inlet positioned to expose liquid from the liquid inlet to ultrasonic vibrations during operation, and an ultrasonic unit air inlet fluidly coupled to the base unit air outlet and positioned to direct the air flow into contact with the liquid when exposed to the ultrasonic vibrations; a liquid reservoir having a liquid outlet fluidly coupled to the ultrasonic unit liquid inlet; Equipped with the liquid reservoir comprises at least one liquid water collector, in particular two liquid water collectors, fluidly coupled to the ultrasonic unit air inlet and comprising an air duct flow path extension in the form of a serpentine fluid path having at least one fluid path bend; the water reservoir is separately removable from the air treatment device, and the ultrasonic unit is separately removable from the air treatment device; A home air treatment device is provided.

Description

Detailed Description of the Invention

[0001] [Field of the Invention] The present invention relates to a domestic air treatment device for adapting air humidity, in particular to air humidification by evaporating water into the air.

[0002] [Background of the invention] US2021003303 states in its abstract: "Embodiments of the present disclosure provide a humidifier and a method for adjusting humidity in an environment in which the humidifier is used. An exemplary humidifier may include a water tank configured to store a supply of water and a chamber in fluid communication with the water tank. The chamber may be configured to receive the supply of water. The humidifier may also include a mist generator disposed within the chamber and configured to generate a mist of water droplets from the supply of water. The humidifier may also include a tube in fluid communication with the chamber and directing the water droplet mist to flow from the chamber through an outlet of the humidifier to an exterior space. The humidifier may further include a mist accelerator disposed near the outlet and configured to generate a forced air flow to accelerate the flow of the water droplet mist out of the outlet."

[0003] US20140264963 states in its abstract: "A reservoir system for an operating unit such as a humidifier includes a removable water tank configured to provide water to the operating unit. The removable water tank includes a main reservoir for holding water, with an opening in the removable water tank fluidically connecting the main reservoir to a secondary reservoir in the operating unit. A plunger is slidably disposed in the opening, and the plunger is movable between an open position, in which the opening fluidically connects the main reservoir to the secondary reservoir, and a closed position, in which the opening is sealed and fluidically disconnects the main reservoir from the secondary reservoir. A float member in the secondary reservoir includes a buoyant body and is configured to generate a force on the plunger to urge the plunger to the open position according to the level of water in the secondary reservoir."

[0004] EP3722688 states the following in its abstract: "This application discloses an ultrasonic humidifier that can be easily disassembled and cleaned. The ultrasonic humidifier includes a tank configured to contain water to be atomized, a float unit configured to float on the water contained in the tank, an ultrasonic vibrator disposed within the float unit, and power supply means for supplying power to the ultrasonic vibrator. The power supply means includes a pair of sliding contacts disposed within the float unit and configured to be constantly positioned above the surface of the water, and a pair of electrodes A configured to be constantly in sliding contact with the pair of sliding contacts and constantly positioned above the surface of the water. Each of the electrodes A is disposed outside the float unit and connected to a power supply device, and power from the power supply device is supplied to the ultrasonic vibrator via the electrodes A and the sliding contacts."

[0005] EP3022496 states in its abstract: "We provide a floating-type humidifier, more specifically, a floating-type humidifier that can humidify an indoor area by using an external water source while floating on water by using a hollow-type floating unit, the floating-type humidifier emitting water droplets or steam while floating. This floating-type humidifier includes: a floating body having a hollow portion and a water inlet hole at its lower portion, through which water is introduced from the outside so that the floating body floats in a water container; an ultrasonic vibrator that is inserted into the water inlet hole of the floating body and changes the water introduced from the water container into water particles or steam; a guide that is connected to an upper end portion of the water inlet hole of the floating body so as to guide the water particles or steam generated by the ultrasonic vibrator to the outside, and is shaped like a pipe with guide holes on its side surface; and a release unit that is provided on the floating body and below the guide hole so as to guide the water particles or steam from the guide to the guide hole and to release the water particles or steam to the outside."

[0006] WO2008 / 060089 states the following in its abstract: "The present invention relates to an ultrasonic humidifier. Conventional ultrasonic humidifiers have been very inconvenient to clean, and consumers have been unable to clean them frequently. Therefore, prolonged use of ultrasonic humidifiers has led to serious contamination due to the growth of fungi and bacteria. To solve this problem, several methods have been proposed, such as injecting antibiotics and sterilizing water by heating. However, these methods have only limited effectiveness in that they incur additional costs and do not eliminate the cause of contamination. The main object of the present invention is to make ultrasonic humidifiers easier to clean, thereby eliminating the need for additional costs." To achieve this objective, the ultrasonic humidifier of the present invention comprises a humidification unit (200) formed as a single unit and including a water tank for storing water for humidification and a humidification chamber for humidifying external air; and a base unit (100) for supplying electricity and external air to the humidification unit when sufficient water for humidification is detected, the humidification unit and the base unit being separable, the humidification unit having a water supply hole or water supply path in the lower part of the partition separating the water tank and the humidification chamber, and the water tank having an inlet port at its bottom.

[0007] [Summary of the Invention] A disadvantage of the prior art is that component failure requires disposal of the entire device. Furthermore, humidifier output is limited. The present invention provides (almost) double the output, from about 250 ml / min to about 700 ml / min. Furthermore, by removing liquid water, particularly selected from water droplets, water drops, and water drips, and essentially emitting only water vapor and / or water mist having water globules with an average diameter of less than 200 μm, typically less than 200 μm, e.g., less than 70 μm, water resulting from humidification with air containing water droplets is not found in the immediate vicinity of the humidifier of the present application. Actual dimensions may vary somewhat with temperature and pressure; the figures shown are at 100 kPa and 20°C. Furthermore, improved humidified airflow is provided, which is substantially laminar, has little dispersion, and extends farther from the fan, typically at least 0.5 meters, e.g., more than 1 meter, while noise levels are reduced to acceptable levels and energy consumption is reduced. Additionally, increased pressure within the humidifier is provided, resulting in improved airflow.

[0008] It is therefore an aspect of the present invention to provide an alternative device that preferably also at least partially obviates one or more of the above disadvantages. 1. A domestic air treatment device for adapting air humidity, comprising: a base unit comprising an air displacement device, a power source, and a base unit air duct having an air inlet and an air outlet, the air displacement device being arranged to provide air flow through the base unit air duct from the air inlet to the air outlet; an ultrasonic unit including a power input removably coupled to the power source of the base unit, a liquid inlet fluidly positioned to expose liquid from the liquid inlet to ultrasonic vibrations during operation, and an air inlet fluidly coupled to the base unit air outlet and positioned to direct the air flow into contact with the liquid when exposed to the ultrasonic vibrations; a liquid reservoir having a liquid outlet fluidly coupled to the ultrasonic unit liquid inlet; Equipped with the liquid reservoir comprises at least one liquid water collector fluidly coupled to the ultrasonic unit air inlet and comprising an air duct flow path extension in the form of a serpentine fluid path having at least one fluid path bend, and in particular at least two liquid water collectors, more particularly a first liquid water collector immediately above and downstream of the ultrasonic unit and a second liquid water collector laterally spaced from the ultrasonic unit; the water reservoir is separately removable from the air treatment device, and the ultrasonic unit is separately removable from the air treatment device; A home air treatment device is provided.

[0009] Further provided is a domestic air treatment device for adapting air humidity, the domestic air treatment device comprising an ultrasonic unit having a humidity chamber with an end ultrasonically coupled to an ultrasonic device and having a humidity chamber outlet coupled to a steam guide duct, the steam guide duct extending into the humidity chamber and comprising a venturi tube with a funnel inlet end positioned to receive liquid droplets from the ultrasonic device, the funnel end narrowing into a venturi duct, the venturi duct extending through the outlet duct and having its outlet near the end of the steam guide duct.

[0010] In one embodiment, the air treatment device is a modular device. In the present invention, the air treatment device is divided into and includes a liquid reservoir, a base unit, and an ultrasonic unit. These modules are functionally connected to each other. This allows for cleaning, maintenance, and even replacement of parts without having to abandon or discard the entire device. This global principle is used in several mobile phones currently on the market, such as the Fairphone device. Applying this global principle to other devices requires a redesign of the device, taking into account functionality, the various functions performed in the device, and an analysis of failure points, safety, etc.

[0011] It has been found that breaking down the air treatment device into modules provides additional benefits in terms of added functionality, user friendliness, and user serviceability.

[0012] In fact, it has been found that the ultrasonic unit is the part of the air treatment device that breaks most frequently, and allowing for easy replacement by the user / consumer avoids the need to dispose of the entire device.

[0013] In the context of this device, the term "ultrasonic" is used. This term, in its broadest sense, refers to the commonly known meaning of ultrasound, particularly for generating liquid mist, especially water mist. In particular, ultrasound for providing water humidity relates to frequencies between 500 kHz and 3 MHz. Ultrasonic units often generate vibrations in the 1-3 MHz range. Various devices vibrate at frequencies around 2.4 MHz. In this home device, output can be 350-450 ml / h at 2.4 MHz and 600-800 ml / h at 1.7 MHz. For proper operation, it has been found that a water height of between 25 and 45 mm above the ultrasonic vibration source is desirable for efficient humidity application. In particular, a water height of 30-40 mm results in even more efficient humidity application.

[0014] In this description, removable refers to components, such as the liquid reservoir and the ultrasonic unit, that can be removed from the remainder of the air treatment device. In this regard, removable is used in contrast to fixed. In particular, the components can be permanently fixed, for example, by using adhesives, welding, or friction welding. In particular, the components can be removable without tools. For example, the liquid reservoir can be removable. In one embodiment, the ultrasonic unit can then be removed. In one embodiment, the reservoir can be positioned or installed on the further air treatment device. The reservoir can be snap-fit ​​onto the further device. In one embodiment, positioning elements can be provided to ensure proper installation. In one embodiment, the ultrasonic unit is fitted onto the further air treatment device. The ultrasonic vibrations can require snap-fit, bayonet, or other non-permanent fastening.

[0015] Reference is made to a power source. This can be a battery device that provides the required power. Such a battery device can comprise a battery. The battery device can further comprise charging leads that can be coupled to an external charging device or, for example, a wireless charging arrangement. The battery device can comprise driver circuitry for various ancillary devices, such as the ultrasound unit. In other embodiments, the ultrasound unit can carry the driver circuitry. Alternatively, the power source can comprise driver circuitry that provides power for the various ancillary devices and / or units. This circuitry can be powered by AC power or by DC power. Alternatively, in a simple embodiment, the power source comprises leads or wires that enter the base unit and allow for coupling and providing power to the ancillary devices and / or units.

[0016] A venturi in the general sense refers to a constricted cross section (reduced cross-sectional area) that results in a reduction in fluid pressure when the fluid flows through the constriction. In fact, a setup using Bernoulli's principle is provided, which states that an increase in fluid flow rate results in a reduction in pressure. When referring to a venturi in this invention, in one embodiment, a tube is actually placed substantially concentrically within another tube. At the end of these concentric tubes, air is first forced into the tube, and this air can flow out and expand at the opposite downstream end. This can be used, for example, to design a flow pattern, which can result in a pressure reduction at the downstream end of the central tube. In one embodiment, the path between the concentric tubes actually creates the constriction of the venturi.

[0017] In one embodiment, the serpentine fluid path includes 2 to 12 bends, particularly 3 to 6 bends. Each bend may individually be sharp, curved, have multiple corners, or a combination thereof. The purpose of the bends is to redirect the airflow from the initial path to a subsequent path that differs from the initial path in at least one direction.

[0018] In one embodiment, the at least one fluid path bend comprises at least one bend, particularly all bends, and at least one bend, particularly all bends, has a bend angle greater than 60 degrees, particularly greater than 80 degrees, for example, substantially 90 degrees. In the example of the first liquid water collector, upwardly moving air encounters an obstacle, causing the air to turn horizontally at a 90-degree angle. There, the air encounters a second obstacle, causing the air to turn vertically again at a 90-degree angle, this time downward. The air then encounters and merges with another air flow, causing the air flow to turn horizontally at a 90-degree angle. Then, the air encounters yet another obstacle, causing the air to turn 90 degrees to flow vertically upward. The second liquid water collector is located adjacent to the first liquid water collector and similarly provides air turning from vertical to horizontal and back to vertical with a 90-degree bend.

[0019] In one embodiment, the ultrasonic unit is removably mounted on the base unit. The liquid reservoir has a lower end removably mounted to the base unit, with the removable ultrasonic unit between the base unit and the liquid reservoir. In a further embodiment, the lower end of the liquid reservoir includes an air duct connecting the base unit air outlet to the ultrasonic unit air inlet. In this regard, the reservoir is removable without the use of tools. Typically, the reservoir is snapped into place during installation and can be lifted from the base unit, for example, for refilling and to provide access to the ultrasonic unit. In one embodiment, the ultrasonic unit is snapped onto the base unit. In one embodiment, the ultrasonic unit is removable without the use of tools.

[0020] In one embodiment, the removable ultrasound unit includes an ultrasound base component that includes a humidity chamber with the liquid inlet. In one embodiment, the removable ultrasonic unit comprises an ultrasonic device at an end of the humidity chamber, the ultrasonic device ultrasonically coupled to the humidity chamber, the humidity chamber being connected to a steam conducting duct having an outlet spaced apart from the humidity chamber.

[0021] In one embodiment, the at least one liquid water collector is fluidly coupled to the steam guide duct, in particular integrated within the steam guide duct. The at least one liquid water collector comprises a collector inlet and a collector outlet. In one embodiment, the collector outlet is fluidly coupled to the steam guide duct. In particular, the collector outlet is fluidly coupled to the inlet end of the steam guide duct. In one embodiment, the collector inlet is fluidly coupled to the outlet of the humidity chamber.

[0022] In one embodiment, the vapor guide duct extends through the liquid reservoir and emerges near the top end of the liquid reservoir. In one embodiment, the humidity chamber has an open bottom end that is sealingly coupled to the ultrasound device in a fluid-tight manner.

[0023] In one embodiment, the ultrasonic device has a vibrating surface that provides a closing surface for the humidity chamber. Alternatively, the humidity chamber comprises a flexible wall that transmits the vibrations of the ultrasonic device. This wall can be provided, for example, from some thermoplastic material.

[0024] In one embodiment, the ultrasound device includes a coupling component for removably coupling to a corresponding coupling component on the ultrasound base component. In one embodiment, the humidity chamber has an open lower end that is sealingly coupled in a fluid-tight manner to the ultrasonic device, which includes an ultrasonic transducer with a coupling part for removably coupling to a corresponding coupling part on the ultrasonic device.

[0025] In one embodiment, the ultrasonic device has a vibrating surface that provides an enclosed wall for the humidity chamber. In one embodiment, the ultrasonic unit comprises a humidity chamber that is cup-shaped with an open end and a bottom, the bottom having an ultrasonic device therein, and the open end providing the air inlet, the liquid inlet, and the humidity outlet.

[0026] In one embodiment, the base unit includes a housing and a receiving space separate from the interior of the housing, and the ultrasound unit is configured to fit within the receiving space.

[0027] In one embodiment, the domestic air treatment device further comprises an ultrasonic unit including a humidity chamber having an end ultrasonically coupled to an ultrasonic device and having a humidity chamber outlet coupled to a steam guide duct, the steam guide duct extending into the humidity chamber and including a venturi tube having a funnel inlet end positioned to receive liquid droplets from the ultrasonic device, the funnel end narrowing into a venturi duct extending through the outlet duct and having its outlet near the end of the steam guide duct.

[0028] In one embodiment, the humidity chamber includes a humidity chamber air inlet, a humidity chamber air outlet coupled to the vapor guide duct, and a liquid inlet for providing a liquid to the ultrasonic device.

[0029] In one embodiment, the liquid reservoir is a water reservoir that provides water to the ultrasound unit for evaporation of the water to humidify the air during operation. In one embodiment, the liquid reservoir has a volume between 0.5 and 10 litres, and / or the domestic air treatment device has dimensions between 10x10x20cm and 30x30x50cm, and / or when equipped with the air displacement device, the air displacement device is adapted to displace air from the domestic air treatment device at a rate of 100m / hour or more. 3 Up to 50m / hour 3 Up to 20m / h, more specifically 3 It is possible to provide an air flow of up to

[0030] There is additionally provided an ultrasonic device for the above-described home air treatment device. There is additionally provided an ultrasonic base part for an ultrasonic device for a domestic air treatment device according to any one of the preceding claims.

[0031] Further provided is a method for replacing an ultrasonic unit of a home air treatment device as described, comprising lifting the liquid reservoir from the air treatment device, and then lifting the ultrasonic unit from the base unit and disconnecting the power input from the power source of the base unit.

[0032] As discussed above, the air treatment device in one embodiment provides a modular device. In one embodiment, the order of modules (when the device is positioned for use) is, from bottom to top: a base unit, an ultrasonic unit mounted on the base unit, and a liquid reservoir mounted on the base unit and "sandwiching" the ultrasonic unit. In this way, liquid can be supplied to the ultrasonic unit under the influence of gravity. This results in a simple construction.

[0033] The terms "upstream" and "downstream" refer to the location of an item or feature relative to the flow of air through the device, with respect to the air inlet and air outlet, a second location closer to the air inlet is "upstream" and a third location between the air outlet and the second location is "downstream" relative to the second location.

[0034] The term "substantially" herein, such as in "consisting essentially of," will be understood by those skilled in the art. The term "substantially" may also include embodiments with "completely," "entirely," "all," etc. Thus, in embodiments, the adjective substantially may be omitted. The term "substantially" may also relate to 90% or more, where applicable, such as 95% or more, particularly 99% or more, even more particularly 99.5% or more, including 100%. The term "comprising" also includes embodiments in which the term "comprising" means "consisting of."

[0035] The term "functionally" will be understood and clear to those skilled in the art. The term "functionally," in addition to "substantially," can also include embodiments including "completely," "entirely," "all," etc. Thus, in embodiments, the adjective "functionally" may be omitted. For example, when used in "functionally parallel," those skilled in the art will understand that the adjective "functionally" encompasses the term "substantially," as explained above. Functionally should be understood to specifically encompass configurations of features that allow those features to function as if the adjective "functionally" were not present. The term "functionally" is intended to cover variations of the features it refers to, such that the combination of features is capable of operating or functioning when functionally using the feature, possibly in combination with other features to which the feature is related in the present invention. For example, when an antenna is functionally coupled or operably connected to a communication device, received electromagnetic signals received by the antenna can be used by the communication device. The term "functionally," as used in "functionally parallel," is used to cover not only strict parallelism, but also embodiments covered by the term "substantially" discussed above. For example, "functionally parallel" relates to embodiments in which, during operation, the components function as if they were parallel. This covers embodiments in which it would be clear to one skilled in the art that the components would operate as if they were parallel within their intended field of use.

[0036] Moreover, the terms first, second, third, etc. in this description and claims are used to distinguish between like elements and not necessarily to describe a sequential or chronological order, it being understood that the terms so used are interchangeable under appropriate circumstances, and that the embodiments of the invention described herein are capable of operating in orders other than those described or illustrated herein.

[0037] Devices or apparatuses herein are described, inter alia, in operation. As will be apparent to those skilled in the art, the present invention is not limited to methods of operation or devices in operation.

[0038] It should be noted that the above-described embodiments illustrate rather than limit the present invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several specific elements, or by means of a suitably programmed computer. In a device or apparatus claim enumerating several means, several of these means may be embodied by one and the same hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0039] The invention further applies to an apparatus or device comprising one or more of the characteristic features set out in this description and / or shown in the accompanying drawings. The invention further relates to a method or process comprising one or more of the characteristic features set out in this description and / or shown in the accompanying drawings.

[0040] The various aspects discussed in this patent may be combined to provide additional advantages. Additionally, some of the features may form the basis of one or more divisional applications. [Brief explanation of the drawings]

[0041] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

[0042] [Figure 1] 1 shows an exploded view of an exemplary humidifier from below (FIG. 1) and above (FIG. 2). [Figure 2] 1 shows an exploded view of an exemplary humidifier from below (FIG. 1) and above (FIG. 2). [Figure 3A] 1 shows a perspective view of four optional replacement options. [Figure 3B] 1 shows a perspective view of four optional replacement options. [Figure 3C] 1 shows a perspective view of four optional replacement options. [Figure 3D] 1 shows a perspective view of four optional replacement options. [Figure 4] 1 shows a perspective view of the underside of the water tank. [Figure 5] 3 shows a cross-sectional view of the humidifier of FIGS. 1 and 2; [Figure 6] 6 shows a venturi added to the humidifier of FIGS. 1 to 5. [Figure 7] 1 shows a cross-sectional view of a humidifier with a Venturi tube. [Figure 8A] 10 shows an exploded view of an alternative embodiment. [Figure 8B] 10 shows an exploded view of an alternative embodiment. [Figure 9] 8C shows a cross section of the embodiment of FIGS. 8A and 8B. [Figure 10] 2 illustrates yet another embodiment. [Figure 11] 1 shows a cross-sectional view of a humidifier with a liquid water collector. [Figure 12] 11 and shows the detail in the enlarged view of FIG. 13. [Figure 13]The liquid water collector is shown in detail. These drawings are not necessarily to scale. DETAILED DESCRIPTION OF THE INVENTION

[0043] DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 and 2 show exploded views of a humidifier 1 as an embodiment of a domestic air treatment device for adapting air humidity, seen from below and above. In this embodiment, the humidifier has a block shape with rounded corners. The humidifier can also be tubular, in particular cylindrical. This is a matter of industrial design. This matter can also have technical effects.

[0044] The main components of the humidifier 1, from top to bottom, are a diffuser cover 2, a reservoir cover 3, a liquid reservoir 4, an ultrasonic unit 5, a base unit 6 covered by a base bottom 7, and in this embodiment, a stand 8.

[0045] The base unit 6, in this embodiment, houses the control electronics, a power supply, and an actuator for effecting air displacement, also referred to as an air displacement device. The power supply and air displacement device are not depicted in FIGS. 1-8. In many embodiments, such an air displacement device is or includes a ventilator with an electric motor. The air displacement device may include a fan operated by an electric motor. This and other implementations of air displacement devices are known as such in the art. The base unit 6 has a base unit air inlet 31 and a base unit air duct 30 that couples the base unit air inlet 31 to the base unit air outlet via the air displacement device.

[0046] The ultrasonic unit 5 in this embodiment is mounted on a base unit 6, which may be provided with features such as rims, cams, and notches to ensure proper installation of the ultrasonic unit 5 on the base unit 6. As will be explained in more detail below, the ultrasonic unit 5 is mounted on the base unit 6 in a manner that allows it to be easily removed from the base unit 6 by a consumer, even without the use of tools in one particular embodiment. In the embodiment of FIGS. 1 and 2, the base unit 6 is open, and the ultrasonic unit 5 provides a closure for the base unit 6. In particular, the ultrasonic base piece 11 provides a lid that can be installed or snapped onto the opening of the base unit 6, for example.

[0047] The liquid reservoir 4 has a lower end, which in this embodiment includes a coupling arrangement for coupling the lower end of the liquid reservoir 4 to the base unit 6. In particular, in one embodiment, the coupling arrangement provides a tensile force such that the liquid reservoir 4 is pulled towards the base unit 6, pressing the liquid reservoir 4 against the ultrasonic unit 5. This seals the lower end of the liquid reservoir 4 against the ultrasonic unit 5. In another embodiment, the liquid reservoir 4 is substantially free-standing on the base unit 6, allowing the liquid reservoir 4 to be easily lifted, for example for filling. The liquid reservoir 4 and the base unit 6 in such an embodiment include mating parts that engage with each other to keep the liquid reservoir 4 stacked on the base unit 6. The mating parts prevent the liquid reservoir 4 from sliding off the base unit 6. In one embodiment, one of the liquid reservoir 4 and the base unit 6 includes a cam, and the other includes a matching notch. Alternatively, one of the reservoir 4 and base unit 6 includes a collar or flange that fits into a groove or step on the other of the base unit 6 and reservoir 4. Engagement components are provided to keep the liquid reservoir 4 and base unit 6 aligned with one another, here with the reservoir 4 on the base unit 6. In the depicted embodiment of FIGS. 1-5, the bottom end of the liquid reservoir 4 has a post 12 that fits into a hole in the base unit 6. Additionally, the bottom end of the reservoir 4 has a perimeter, the base unit 6 has a matching perimeter, and the ultrasonic base piece 11 and collar of the ultrasonic unit 5 fit around the base unit rim to provide an outer rim that fits over the reservoir rim. The cross section of FIG. 5 illustrates this.

[0048] The liquid reservoir 4 has a container space for holding liquid and has a liquid reservoir liquid outlet 15 at its lower end. In the coupled position of the liquid reservoir 4, where the lower end of the liquid reservoir 4 is present on the base unit 6, the liquid reservoir outlet 15 is fluidly coupled to the liquid inlet of the ultrasonic unit 5. To enable removal, filling, and replacement of the reservoir 4, a stopper called a valve may be provided on the liquid reservoir liquid outlet 15. In one embodiment, a float valve is provided. In one embodiment, the float valve 40 (FIGS. 8A, 8B, 9) has a valve component for sealing the liquid outlet 15 and a float body. When the reservoir 4 is removed, the valve component closes the liquid outlet 15. The float body is coupled to the valve component and regulates the amount of liquid in / at the ultrasonic unit 5.

[0049] The liquid reservoir 4 in this embodiment further comprises a steam guide duct 16 integrated into the liquid reservoir 4. In this embodiment, the steam guide duct 16 extends uninterruptedly from the lower end of the liquid reservoir 4 to the opposite (upper, in use) end of the liquid reservoir 4. In this embodiment, the steam guide duct 16 is a separate pipe, as will be further explained below. In an alternative embodiment, the outer wall of the liquid reservoir 4 may provide part of the steam guide duct 16.

[0050] Typically, most parts of the housing and components can be injection molded, such as the diffuser cover 2, reservoir cover 3, liquid reservoir 4, components of the ultrasonic unit 5, housing of the base unit 6, base bottom 7, and stand 8. These parts can be made of plastics, such as thermoplastic materials, such as ABS, PE, PP, polyester, or other known polymers used in the art.

[0051] As mentioned above, the humidifier 1 in one embodiment is for domestic use. In such applications, the liquid reservoir can have a volume between 0.5 and 10 liters. In one embodiment, the domestic air treatment device has dimensions (length x width x height) between 10 x 10 x 20 cm and 30 x 30 x 50 cm. Another way to define the device as a humidifier, particularly for domestic use and when equipped with an air displacement device, is that the air displacement device in operation has a flow rate of 100 m / h. 3 In particular, the airflow during use is 50 m / h. 3 Specifically, the air flow is less than 20 m / h. 3 In application as a humidifier, the liquid is water, which is turned into mist by the ultrasonic unit 5, which mist is then removed from the air treatment device 1 via the vapor conducting duct 16.

[0052] 3A-3D illustrate several embodiments of the ultrasonic unit 5. The figures illustrate different options for replaceability and repair. The embodiments shown are shaped to fit into / onto the base unit 6 illustrated above. In one embodiment of the base unit 6, the base unit 6 includes an upper sealing piece that provides a liquid-tight seal to the interior of the base unit 6. Such a sealing piece would include an air outlet that is coupled to an air duct within the base unit 6. In one embodiment, the outer shape of the upper sealing piece or base unit sealing cover is shaped to receive the ultrasonic unit 5. In one embodiment, the upper sealing piece or base unit sealing cover is shaped to receive the ultrasonic unit base piece 11 of the ultrasonic unit 5 in a mating or form-fitting manner, holding the ultrasonic unit 5 in place on the base unit 6. In this manner, the wall thickness of the ultrasonic unit base piece 11 can be reduced, making it more favorable for replaceability. Alternatively, the ultrasonic base part 11 may be made of a flexible material, or even a rubber or silicone material, allowing for easy cleaning.

[0053] The ultrasonic unit 5 illustrated in one embodiment in Figures 3A-3D includes an ultrasonic base part 11. The ultrasonic base part 11 is shaped to fit onto the base unit 6. Furthermore, the ultrasonic base part 11 is shaped in this embodiment to fit sealingly (in a sealing manner) onto the lower end of the liquid reservoir 4. In particular (not illustrated), the ultrasonic base part 11 may include a liquid inlet that fits fluid-tightly into a liquid outlet at the lower end of the liquid reservoir. In one embodiment, the ultrasonic base part 11 has an air outlet 22 that extends into the air duct 14 at the lower end of the liquid reservoir 4. The ultrasonic base part 11 may sealingly fit onto the air inlet end of the air duct 14 of the liquid reservoir 4 in a fluid-tight or, in particular, gas-tight manner.

[0054] In one embodiment, the ultrasonic base component 11 has an air inlet that seals onto the air outlet of the base unit 6. In another or combined embodiment, the ultrasonic base component air inlet is coupled via an air duct 14 that is at least partially at the lower end of the liquid reservoir 4.

[0055] In the embodiment of FIG. 3A, the entire ultrasonic unit 5 includes an ultrasonic base plate 11, an ultrasonic device 9 attached to the ultrasonic base plate 11, and an ultrasonic transducer 11 coupled to and part of the ultrasonic device 9 and attached to the ultrasonic base plate 11. These components may be attached via screws, glued, or even co-molded to the ultrasonic base plate 11. Thus, in this embodiment, the entire ultrasonic unit 5 may be replaced by the consumer if damaged or malfunctions. In one embodiment, the ultrasonic device 9 and base unit 6 include complementary plugs and sockets to enable power coupling between the ultrasonic unit 5 and the base unit 6. In one embodiment, the ultrasonic device 9 includes a lead with a plug, and the base unit 6 includes a socket for the plug.

[0056] In FIG. 3B , the ultrasonic device 9 is removably attachable to the ultrasonic base component 11. The ultrasonic device 9 is attached, for example, via a bayonet fit, a form fit, or a snap fit. This allows a consumer to easily remove the ultrasonic device 9 from the ultrasonic base component 11 without using additional tools. In this embodiment, the transducer 10 is attached to and is part of the ultrasonic device 9. The transducer 10 can be attached via a series of screws, co-molded, or glued onto the rest of the ultrasonic device 9. In one embodiment, the humidity chamber 13 includes a humidity chamber-ultrasonic unit coupling component 20, and the ultrasonic device 9 includes an ultrasonic unit coupling component 21 that cooperates with the ultrasonic unit coupling component 20, here part of the humidity chamber 13. This allows a consumer to easily clean the ultrasonic unit 5 and replace the ultrasonic device 9 if it becomes damaged or broken. FIG. 3D shows the embodiment of FIG. 3B from the other side. In the depicted embodiment, the ultrasonic device 9 has a collar 20 that fits into a collar 21 of the ultrasonic base piece 11. In one embodiment, the bottom of the humidity chamber 13 can be co-formed with the humidity chamber base piece 11. In such an embodiment, the entire ultrasonic device can be installed within the humidity chamber. Alternatively, the ultrasonic device 9 is ultrasonically coupled to the bottom of the humidity chamber 13. During operation, this causes the bottom to ultrasonically vibrate.

[0057] FIG. 3C illustrates another embodiment of the ultrasonic unit 5. In this embodiment, the ultrasonic base part 11 and the ultrasonic device 9, excluding the ultrasonic transducer 10, are integrated into one part. In this embodiment, the ultrasonic device 9 can be glued or welded onto the ultrasonic base part 11. Alternatively, the ultrasonic device 9 can be co-molded into / onto the ultrasonic base part 11. In yet another alternative, the ultrasonic device 9 can be attached, for example, via screws. This could theoretically allow replacement, albeit using a tool, and requires a good seal after replacement.

[0058] The transducer 10 in this embodiment is replaceable by the consumer. In one embodiment, the transducer 10 is replaceable without the use of tools. This may include, for example, attachment via a bayonet, snap-fit, or form-fit coupling. Additionally, the transducer 10 may include a power lead with a plug that fits into a socket on a further ultrasound device 9.

[0059] The ultrasonic unit 5 includes a humidity chamber 13. The humidity chamber 13 includes a liquid inlet 17, an air inlet 19, and a lower wall that is ultrasonically coupled to the ultrasonic device 9. In the embodiment depicted in FIGS. 3A-3D, the humidity chamber is the ultrasonic base component 11. In that embodiment, the humidity chamber can have an open lower end, as illustrated. In this embodiment, the ultrasonic device 9 and / or transducer 10 provide the ultrasonically vibrating wall 25.

[0060] FIG. 4 shows the lower end of the liquid reservoir 4 in some more detail, and FIG. 5 shows a cross-sectional view of the embodiment discussed above. In this embodiment, the humidifier 1 includes a vapor guide duct 16 extending through the liquid reservoir 4. The vapor guide duct 16 includes an inlet end 35 positioned to receive moisture droplets / vapor from the humidity chamber 13. The vapor guide duct 16 here is a section, piece, or end of a straight tube. The inlet end 35 here is positioned at or near the lower end of the liquid reservoir 4. The vapor guide duct 16 includes an outlet end 36 at or near the opposite end of the liquid reservoir 4. In this embodiment, the outlet end 36 of the vapor guide duct 16 connects to the outlet piece of the reservoir cover 3. The liquid reservoir cover 3 further includes a cover 2, which in this embodiment leaves a peripheral flow path.

[0061] 6 and 7 disclose a further embodiment of the humidifier, providing, for example, an extension that can be added to the previously discussed embodiment. This would / could require only a modified cover 2. This embodiment includes a venturi tube 36 that can be inserted into the steam guide duct 16. The venturi tube 26 has a funnel inlet end 27 that narrows into a venturi duct 28. The funnel inlet end 27 terminates in a venturi inlet. Obviously, the cross-sectional area of ​​the venturi inlet is larger than the cross-sectional area of ​​the venturi duct 28. The ratio of the venturi inlet cross-sectional area to the venturi duct cross-sectional area can be between 1.5 and 5. In most embodiments, this ratio is between 2 and 4.

[0062] The venturi inlet is positioned near the ultrasonic transducer or in the humidity chamber wall ultrasonically coupled to the transducer. In most applications, the venturi inlet is located between 1 mm and 1 cm from the ultrasonic vibrations.

[0063] In one embodiment, the venturi tube 26 is coaxial with the steam guide duct 16. This creates an air path between the venturi duct 28 and the steam guide duct 16. The relatively high-velocity air in the resulting air path creates a pressure drop at the end 29 of the venturi duct 28, accelerating the liquid droplets within the venturi duct 28. This creates a more powerful flow of humidified air. To position the venturi duct 28 within the steam guide duct 16, the outside of the venturi duct is provided with a centering end 32 for engaging the inner surface of the steam guide duct 16 or for resting on a corresponding engaging member on the inner surface of the steam guide duct 16. In this manner, the venturi tube 26 may be removable. In this embodiment, the cover 2 has an opening 34 or hole for filling the periphery of the steam guide duct 16. The liquid reservoir cover 3 in this embodiment is also modified to extend through the steam guide duct. In this embodiment, the path between the venturi tube and the steam guide duct 16 actually provides a constriction of the venturi, through which a path is provided for moisture or steam.

[0064] Figures 8A, 8B, and 9 show an alternative embodiment of the humidifier 1. This embodiment also has design aspects that may be eligible for design protection. In this design, which has a round or oval cross section, the steam guide duct 16 is positioned centrally through the liquid reservoir 4. The removable venturi tube 26 discussed with reference to Figures 6 and 7 is included in this design. The venturi tube 26 is replaceable and can be freely installed by the user.

[0065] This embodiment also shows a mechanical float element or float valve 40 that fits inside the humidity chamber 13 and acts as a closure element to close off the liquid outlet 15 of the liquid reservoir 4. The float valve 40 is also capable of manipulating the amount of liquid that leaves the liquid reservoir 4 and enters the humidity chamber 13.

[0066] 8A, 8B and 9, the base unit 6 includes a lid 42 for sealing the base unit 6. In this embodiment, the lid 42 has a receiving space that in this embodiment has a bottom, which rests against the bottom of the base unit 6. In this way, in effect, the entire space (or part of) the doughnut-shaped portion of the base unit 6 is the base unit air duct 30.

[0067] In this embodiment, the ultrasound unit 5, and in particular the ultrasound unit base part 11, does not include or is not provided with an air duct. In this embodiment, the base unit lid 42 provides a receiving space for the ultrasonic unit 5. The ultrasonic unit base part 11 in this embodiment is effectively a humidity space 13 formed as a cup with a bottom containing the ultrasonic device 9. The ultrasonic unit base part 11 has a rim around its cup edge that fits into a collar around the receiving space of the base unit lid 42. In the depicted embodiment, the ultrasonic unit base part 11 can be formed from a sheet of material in a deep drawing or vacuum forming process, which facilitates production of the part as a replacement part.

[0068] The reservoir outlet 15 is closed by a float valve 40, which closes the outlet 15 when the reservoir 4 is removed from the device 1, and in particular from the base unit 6. The float body of the float valve 40 fits within the humidity chamber 13. In the illustrated embodiment, the float valve 40 has an opening that provides a passage for vapor from the ultrasonic device 9. The float valve 40 can be designed to control the amount of liquid in the humidity chamber 13. In one embodiment, the float valve 40: The outlet 15 has a valve that is in a closed position when the reservoir 4 is removed from the air treatment device. The float valve 40 also has a float body positioned within the humidity chamber 13. The float body or float has an actuation end that opens the valve when no liquid is available in the humidity chamber 13. As the float body begins to float in the liquid in the humidity chamber, it increases the closure of the valve until the desired liquid level in the humidity chamber 13 is achieved. Typically, 25-35 mm of water is maintained in a humidity chamber 13 above the ultrasonic device 9 .

[0069] FIG. 10 illustrates another embodiment of a humidifier in cross section. In this embodiment, the ultrasonic unit 5 includes an ultrasonic base piece 11 and an ultrasonic transducer 10. The ultrasonic base piece 10 is, in turn, a relatively simple cup that provides a humidity chamber 13. Within the humidity chamber 13, a water level W is shown during operation. Again, a liquid reservoir bottom 45 closes off a portion of the humidity chamber 13. The reservoir air duct 14 is a bulge in the reservoir bottom 45. The base unit air outlet 43 is fluidly coupled to the humidity chamber air inlet 19. The vapor guide duct 19 extends through the reservoir 4. In fact, in this embodiment and in the embodiment of FIG. 9, the duct is co-molded with the liquid reservoir 4.

[0070] The ultrasonic device 9 is equipped with a water sensor for detecting whether the water level W in the humidity chamber 13 is below a minimum level. In this application, reference is made to an air treatment device equipped with an ultrasonic unit. In particular, liquid is converted into droplets in the air stream. This effect can also be achieved using a sprayer, which generally converts the liquid into a fine mist. For this purpose, for example, a nozzle can be used. The ultrasonic unit 5 provides a simple and efficient way of providing the mist.

[0071] FIG. 11 shows a humidifier 1 that includes many of the above-described elements. Elements that are identical or have the same function are designated by the same reference numerals. It has been found that ultrasonic treatment of water results in relatively large amounts of liquid water agglomerates. In particular, the liquid water agglomerates contain liquid water droplets greater than 200 μm in diameter. To this end, the humidifier includes at least one liquid water collector. The liquid water collector is fluidly coupled to the ultrasonic unit. The liquid water collector includes an air duct flow path extension. In this embodiment, the extended air duct flow path is in the form of a serpentine fluid path with at least one fluid path bend.

[0072] At least one liquid water collector is fluidly coupled to the air inlet of the ultrasonic unit. In particular, the humidifier in this embodiment includes at least two liquid water collectors, which are integrated into one element.

[0073] In this embodiment, the serpentine fluid path comprises between 2 and 12 bends. In particular, the serpentine fluid path comprises between 3 and 6 bends. The at least one fluid path bend comprises at least one bend, particularly all bends, having a bend angle greater than 60 degrees, particularly greater than 80 degrees, and more particularly substantially 90 degrees.

[0074] In the two or more liquid water collectors, a first liquid water collector 53 is located downstream of and directly above the ultrasonic unit 5. A second liquid water collector 54 is located laterally away from the ultrasonic unit 5 and adjacent to and fluidly connected to the first liquid water collector 53. In this embodiment, the liquid water collector 50 includes impingement walls 55, here located at the end or bend 52. Larger water droplets impinge on these impingement walls 55. The water is returned to the ultrasonic unit 5 via a duct wall 58.

[0075] The liquid water collector 50 comprises a liquid water collector inlet (collector inlet) 56 and a liquid water collector outlet (collector outlet) 57. The collector inlet 56 is fluidly coupled to the ultrasound unit 5. In particular, the collector inlet 56 is fluidly coupled to the humidity chamber vapor outlet 18. The collector outlet 57 is here fluidly coupled to the vapor guide duct 16. In particular, the collector outlet 57 is fluidly coupled to the vapor guide duct inlet 35.

[0076] In the figure, several water droplets are shown schematically, as well as the air flow AA entering the humidity chamber and the water vapor flow VV carrying the water droplets.

[0077] In this embodiment, the liquid water collector 50 is three-dimensional, extending both into and out of the drawing. This allows for the creation of various flow paths. Each of these may be provided with vents, impingement walls, etc. Next to the current collector outlet 57, for example, in the normal flow path, is an impingement wall 55. Next to the impingement wall 55, i.e., "above / out of the drawing" and / or "in the drawing", are one or more collector outlets 57.

[0078] The current construction allows the liquid water collector 50 to be attached to the underside of the reservoir, i.e. the side that, in use, faces the ultrasound unit 5. In this way, the liquid water collector 50 is easily integrated and can be easily cleaned.

[0079] As previously mentioned, the embodiment of FIG. 11 may have aspects that may be part of other IP protection such as design and / or copyright. It will also be clear that the above description and drawings are included to illustrate some embodiments of the present invention, and not to limit the scope of protection. Starting from this disclosure, many more embodiments will be apparent to those skilled in the art. These embodiments are within the scope of protection and the essence of the present invention, and are obvious combinations of the technology in the prior art and the present disclosure of this patent. [Explanation of symbols]

[0080] [Reference sign] 1...humidifier, 2...cover, 3...reservoir cover, 4...liquid reservoir, 5...ultrasonic unit, 6...base unit, 7...base plate, 8...stand, 9...ultrasonic device, 10...ultrasonic transducer, 11...ultrasonic base part, 12...reservoir coupling end, 13...humidity chamber, 14...reservoir air duct, 15...reservoir liquid outlet, 16...vapor guide duct, 17...humidity chamber liquid inlet, 18...humidity chamber vapor outlet, 19...humidity chamber air inlet, 20...humidity chamber ultrasonic unit coupling part, 21...ultrasonic unit coupling part cooperating with part, 22...ultrasonic unit air duct, 23...ultrasonic unit air duct outlet, 24...ultrasonic unit air duct inlet, 25...ultrasonic surface, 26...venturi tube, 27...venturi funnel inlet, 28... Venturi duct, 29...Venturi outlet, 30...Base unit air duct, 31...Base unit air inlet, 32...Venturi steam guide duct engagement end, 33...Liquid reservoir filling opening, 34...Cover steam duct opening, 35...Steam guide duct inlet, 36...Steam guide duct outlet, 40...Float valve, 41...Air displacement device, 42...Base unit lid, 43...Base unit air outlet, 44...Water sensor, 45...Water reservoir bottom, 50...Liquid water collector, 51...Serpentine fluid path, 52...Serpentine fluid path bend, 53...First liquid water collector, 54...Second liquid water collector, 55...Impingement wall, 56...Liquid water collector inlet, 57...Liquid water collector outlet, 58...Water duct wall, W...Water level, AA...Air flow, VV...Steam flow

Claims

1. 1. A domestic air treatment device for adapting air humidity, comprising: a base unit including an air displacement device, a power source, and a base unit air duct having a base unit air inlet and a base unit air outlet, the air displacement device being arranged to provide air flow from the base unit air inlet to the base unit air outlet through the base unit air duct; an ultrasonic unit comprising: a power input removably coupled to the power source of the base unit; a liquid inlet positioned to expose liquid from the liquid inlet to ultrasonic vibrations during operation; and an ultrasonic unit air inlet fluidly coupled to the base unit air outlet and positioned to direct the air flow into contact with the liquid when exposed to the ultrasonic vibrations; a liquid reservoir having a liquid outlet fluidly coupled to the ultrasonic unit liquid inlet; Equipped with the liquid reservoir comprises at least one liquid water collector, in particular two liquid water collectors, fluidly coupled to the ultrasonic unit air inlet and comprising an air duct flow path extension in the form of a serpentine fluid path having at least one fluid path bend; The water tank is separately removable from the air treatment device, and the ultrasonic unit is separately removable from the air treatment device. Home air treatment devices.

2. the tortuous fluid path comprises 2 to 12 bends, in particular 3 to 6 bends; 2. The domestic air treatment device of embodiment 1.

3. the at least one fluid path bend comprises at least one bend, in particular all bends, wherein at least one bend, in particular all bends, has a bend angle of more than 60 degrees, in particular more than 80 degrees, for example substantially 90 degrees; 3. The domestic air treatment device of embodiment 1 or 2.

4. 4. The domestic air treatment device of claim 1, wherein the liquid reservoir and the base unit enclose the ultrasonic unit.

5. the ultrasound unit is removably mounted on the base unit; the liquid reservoir has a lower end removably attached to the base unit, the removable ultrasonic unit being between the base unit and the liquid reservoir, and in particular the lower end of the liquid reservoir comprising an air duct connecting the base unit air outlet to the ultrasonic unit air inlet.

5. A domestic air treatment device according to any one of claims 1 to 4.

6. 6. The domestic air treatment device of claim 1, wherein the removable ultrasonic unit comprises an ultrasonic base part having a humidity chamber containing the ultrasonic unit liquid inlet.

7. 7. The domestic air treatment device according to claim 1, wherein the removable ultrasonic unit comprises an ultrasonic device at an end of the humidity chamber, the ultrasonic device being ultrasonically coupled to the humidity chamber, the humidity chamber being connected to a steam guide duct having an outlet at a distance from the humidity chamber, and the at least one liquid water collector being fluidly coupled to the steam guide duct, in particular integrated within the steam guide duct.

8. 8. The domestic air treatment device of claim 1, wherein the liquid water collector comprises a liquid water collector inlet and a liquid collector outlet.

9. 9. The domestic air treatment device of claim 1, wherein the liquid water collector inlet is fluidly coupled to the ultrasonic unit, and in particular to the humidity chamber vapor outlet.

10. 10. The domestic air treatment device according to any one of claims 1 to 9, wherein the liquid water collector outlet is fluidly connected to the steam guide duct, in particular to an inlet of the steam guide duct.

11. 11. A domestic air treatment device according to any one of claims 1 to 10, wherein if a steam guide duct is provided, the steam guide duct extends through the liquid reservoir and emerges near the top end of the liquid reservoir.

12. 12. A domestic air treatment device according to any one of claims 1 to 11, wherein the humidity chamber has an open lower end sealingly connected to the ultrasonic device in a liquid-tight manner, in particular the ultrasonic device has a vibrating surface that provides a closing surface for the humidity chamber, and / or the ultrasonic device comprises a coupling part for removably coupling to a corresponding coupling part on the ultrasonic base part.

13. 13. A domestic air treatment device according to any one of claims 1 to 12, wherein the humidity chamber has an open lower end sealingly connected to the ultrasonic device in a liquid-tight manner, the ultrasonic device comprising an ultrasonic transducer with a coupling part for removably coupling to a corresponding coupling part on the ultrasonic device, in particular the ultrasonic device having a vibrating surface providing a closing wall of the humidity chamber.

14. 14. The domestic air treatment device according to claim 1, wherein the ultrasonic unit comprises the humidity chamber, the humidity chamber being cup-shaped with an open end and a bottom, the bottom being provided with an ultrasonic device, the open end providing the air inlet, the liquid inlet and the humidity outlet; and / or the base unit comprises a housing and a receiving space separate from the interior of the housing, the ultrasonic unit being configured to fit within the receiving space; and / or the domestic air treatment device comprises the ultrasonic unit coupled to a steam guide duct for receiving humidity generated from the ultrasonic unit; and / or the domestic air treatment device comprises the ultrasonic unit coupled to a steam guide duct for receiving humidity generated from the ultrasonic unit, the steam guide duct extending through the water tank; and / or the domestic air treatment device comprises an ultrasonic unit comprising a humidity chamber with an end ultrasonically coupled to an ultrasonic device, the humidity chamber having a humidity chamber outlet coupled to the steam guide duct, the steam guide duct extending through the water tank.

15. 15. A domestic air treatment device for adapting air humidity, in particular according to any one of claims 1 to 14, comprising an ultrasonic unit with a humidity chamber, the humidity chamber having an end ultrasonically coupled to an ultrasonic device, the humidity chamber having a humidity chamber outlet coupled to a steam guiding duct, the steam guiding duct comprising a venturi tube extending into the humidity chamber and having a funnel inlet end positioned to receive liquid droplets from the ultrasonic device, the funnel end narrowing into a venturi duct, the venturi duct extending through the outlet duct and having its outlet near the end of the steam guiding duct.

16. 16. The domestic air treatment device of claim 1, wherein the humidity chamber comprises a humidity chamber air inlet, a humidity chamber air outlet coupled to the steam guide duct, and a liquid inlet for providing a liquid to the ultrasonic device.

17. 17. The domestic air treatment device of any one of claims 1 to 16, wherein the liquid reservoir is a water reservoir that provides water to the ultrasonic unit for evaporating the water to humidify the air during operation.

18. the liquid reservoir has a volume between 0.5 and 10 liters and / or the domestic air treatment device has dimensions of 10 x 10 x 20 cm ３ From 30 x 30 x 50 cm ３ and / or the air displacement device, the air displacement device during operation is ３ Up to 50m per hour ３ Up to, more particularly, 20 m / h ３ 18. A domestic air treatment device according to any one of claims 1 to 17, capable of providing an air flow of up to.

19. 10. The domestic air treatment device according to any one of the preceding embodiments, comprising at least two elements selected from any of the preceding embodiments and descriptions.

20. 20. An ultrasonic device for a domestic air treatment device according to any one of claims 1 to 19.

21. An ultrasonic base part for an ultrasonic device for a domestic air treatment device according to any one of claims 1 to 20.

22. 22. A method for replacing an ultrasonic unit of a domestic air treatment device according to any one of claims 1 to 21, comprising lifting the liquid reservoir from the air treatment device, and then lifting the ultrasonic unit from the base unit and disconnecting the power input from the power source of the base unit.

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