CN113943023A - Low-noise household water purifier - Google Patents
Low-noise household water purifier Download PDFInfo
- Publication number
- CN113943023A CN113943023A CN202111292303.1A CN202111292303A CN113943023A CN 113943023 A CN113943023 A CN 113943023A CN 202111292303 A CN202111292303 A CN 202111292303A CN 113943023 A CN113943023 A CN 113943023A
- Authority
- CN
- China
- Prior art keywords
- noise
- water purifier
- booster pump
- low
- binding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compressor (AREA)
Abstract
The invention discloses a low-noise household water purifier which comprises a shell, wherein an installation cover plate is arranged on the shell, a booster pump and an output pipeline of the booster pump are arranged in the shell, noise reduction devices are arranged at the installation cover plate and a supporting structure of the booster pump, a binding device made of flexible materials is arranged on the outer surface of the output pipeline, and the binding device wraps and binds the output pipeline and fixes the output pipeline in the shell in a tensioning state. The invention generally adopts comprehensive means of vibration reduction, frequency avoidance, sound absorption and insulation and the like, does not change the internal structure of the water purifier, and weakens the noise of the household water purifier by using a mode of simple and convenient installation and low cost. Damping, wherein the vibration damping pad dampens the vibration at the booster pump, and the output pipeline is wrapped with a binding device to damp the vibration; avoiding frequency, avoiding modal response between a booster pump and a shell of the water purifier, and preventing noise under a certain frequency from being excited; the sound absorption and insulation can consume as much energy as possible in the process of sound transmission.
Description
Technical Field
The invention relates to a water purifier, in particular to a low-noise household water purifier.
Background
The existing household water purifier is internally provided with a booster pump (water pump), and during working, the booster pump vibrates due to large load and fast rotating speed, and the water purifier is usually closer to a user, so that noise interference to a certain degree can be generated, and the use experience of a product is influenced.
For the noise of the household water purifier, at present, people mostly reduce the noise of the water purifier from the following aspects:
1. the water pump with excellent self-vibration noise performance is developed, for example, the motor rotor of the booster pump is optimized, the impeller profile is optimized, and the form and the volume of a suction cavity are optimized, so that the self-vibration amplitude of the booster pump is lower when the booster pump works, and the noise generated by vibration is correspondingly reduced.
2. The structural rigidity of the shell of the water purifier is enhanced, so that the mode of the whole water purifier is enhanced to a certain degree, the frequency coincidence with the frequency of the booster pump is less, and the generated noise is correspondingly reduced.
3. The sound absorption, insulation and noise reduction means taking the sound insulation cover as a main part is adopted, the booster pump is independently installed outside the water purifier shell, the booster pump is wrapped by the closed shell, the booster pump is installed on the base in the closed shell, and the wall surface of the closed shell is covered with the sound absorption cotton, so that the connection between the booster pump and the water purifier shell can be effectively cut off, the noise generated by the water purifier shell per se due to the vibration of the booster pump is greatly reduced, and the noise generated by the water absorption of the booster pump per se can be effectively reduced.
Since a water pump with excellent self-vibration noise performance is developed, the corresponding development period is long, and a problem of increasing cost may exist. The structural rigidity of the water purifier is increased, the adjustable range is narrow, and even if a certain order mode is avoided by adjusting the structure, the possibility that the mode is close to or even overlapped with other order modes still exists, so that the corresponding effect cannot be achieved. In addition, although it is easy to simply increase the structural rigidity, the adjustment is complicated because the mode itself is complicated, and the increase of the structural rigidity also involves a problem of increasing the cost. The sound absorption, insulation and noise reduction means mainly comprising the sound insulation cover has the advantages that the water pump is arranged outside the shell of the water purifier, so that the problem of influencing the overall appearance of the water purifier exists, in addition, the sound insulation cover is additionally arranged, the related cost can be greatly increased, and the problems of inconvenience in assembly and the like exist.
In addition, besides the noise generated by the booster pump and the noise formed by the booster pump and the water purifier shell, after the booster pump is boosted, a strong water flow pulse is formed at the water outlet of the booster pump, and the strong water flow pulse further causes severe vibration of the output pipeline, so that a non-negligible noise source formed by the output pipeline of the booster pump exists in the water purifier.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a low-noise household water purifier which comprehensively reduces the noise of the water purifier from a water purifier shell, a booster pump supporting structure and a booster pump output pipeline.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a domestic purifier of low noise, includes the casing, is provided with the installation apron on the casing, is provided with booster pump and delivery line in the casing, installation apron department with the bearing structure department of booster pump all is provided with and falls the device of making an uproar, delivery line's surface is provided with the constraint device of making by flexible material, and this constraint device will delivery line parcel constraint is fixed with the tensioning state in the casing.
Further, the binding device comprises a binding structure and a connecting structure, wherein the binding structure is used for wrapping and binding the output pipeline, and the connecting structure is connected with the binding structure and is fixed in the shell in a tensioning state.
Furthermore, the binding device is integrally in a sheet shape, different areas on the binding device form the binding structure and the connecting structure, and the binding structure binds the output pipeline in a winding mode and then fixes the binding state in a bonding or binding mode.
Further, the binding structure is composed of a binding pipe, the binding pipe wraps and binds the output pipeline in a sleeving manner, and the connecting structure is composed of a sheet-shaped mounting strip.
Further, the mounting bar is integrally formed with the restraining tube.
Further, the binding pipe is fixed through a plurality of mounting bars.
Further, the noise reduction device arranged on the installation cover plate is composed of a sealing adhesive tape and sound absorption cotton which are sequentially covered on the inner side surface of the installation cover plate.
Further, the sealing adhesive tape covers the inner side surface of the mounting cover plate completely, the sound-absorbing cotton is attached to the surface of the sealing adhesive tape, and an attaching edge corresponding to the mounting surface on the shell is reserved on the periphery of the sound-absorbing cotton of the sealing adhesive tape.
Further, the sound-absorbing cotton is connected with the sealing adhesive tape in an adhesive manner, the attaching edge is connected with the mounting surface on the shell in an adhesive manner, and the density of the sound-absorbing cotton is 300g/m2The bicomponent sound absorption cotton.
Further, the booster pump supports on the holding surface that the casing lower part set up, the booster pump with be provided with the damping pad between the holding surface, the upper portion of this damping pad is provided with booster pump shape looks adaptation and supplies the pump head to crouch the recess of going into, and the lower part of damping pad sets up rectangular shape mounting groove, be provided with on the holding surface and insert the rectangular shape of mounting groove is protruding.
The invention generally adopts comprehensive means of vibration reduction, frequency avoidance, sound absorption and insulation and the like, does not change the internal structure of the water purifier, and weakens the noise of the household water purifier by using a mode of simple and convenient installation and low cost. Damping, namely damping vibration at the booster pump through a damping pad, and damping vibration at the output pipeline of the booster pump through wrapping and bounding, so as to reduce noise generated by vibration; avoiding frequency, namely avoiding modal response between a booster pump and a shell of the water purifier, so that noise under a certain frequency is not excited, thereby reducing feedback noise; the sound absorption and insulation can consume the energy of noise as much as possible even if the sound is transmitted, thereby effectively reducing the operation noise.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of an internal structure of a low-noise household water purifier according to an embodiment of the present invention;
figure 2 is an enlarged view of a portion of the restraint device 5 of figure 1;
FIG. 3 is a schematic view of an installation of a low-noise household water purifier according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an installation cover plate 2 provided with a noise reduction structure in a low-noise household water purifier according to an embodiment of the present invention;
FIG. 5 is a schematic view of a partial cross-sectional structure of a low-noise household water purifier according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a vibration-damping pad 9 of the low-noise household water purifier according to the embodiment of the present invention;
fig. 7 is a schematic structural view of another posture of the vibration-damping pad 9 in the low-noise household water purifier according to the embodiment of the present invention.
Icon: 1-a housing; 2, installing a cover plate; 3, a booster pump; 4, an output pipeline; 5-a restraining device; 5-1-a tethered structure; 5-2-a linking structure; 5-2-1-mounting holes; 6, hooking; 7-sealing the adhesive tape; 8, sound absorption cotton; 9-a vibration damping pad; 9-1-groove; 9-2-mounting groove; 9-3-damping groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1-7, this embodiment provides a low-noise household water purifier, which includes a casing 1, wherein an installation cover plate 2 is disposed on the casing 1, a booster pump 3 and an output pipeline 4 thereof are disposed in the casing 1, noise reduction devices are disposed at the installation cover plate 2 and a support structure of the booster pump 1, a binding device 5 made of a flexible material is disposed on an outer surface of the output pipeline 4, and the output pipeline 4 is wrapped and bound by the binding device 5 and is fixed in the casing 1 in a tensioned state.
The domestic purifier of this embodiment all sets up the device of making an uproar of falling in mounting cover plate 2 department and booster pump 1's bearing structure department, makes mounting cover plate 2 have the effect of isolation noise, makes booster pump 1's noise output reduce. The binding device 5 made of flexible materials is coated on the output pipeline 4, so that the vibration of the output pipeline 4 can be effectively weakened, and the noise generated by the vibration of the output pipeline 4 is reduced; the binding device 5 is fixed in the shell 1 in a tensioning state, a certain binding effect can be achieved on the output pipeline 4, vibration of the output pipeline 4 is effectively weakened, and under the condition that the output pipeline 4 vibrates, damping deformation can occur on the part of the binding device 5 between the output pipeline 4 and the fixed position of the binding device 5 in the shell 1, so that energy of vibration of the output pipeline 4 is effectively consumed, and vibration of the output pipeline 4 is effectively reduced. Consequently, the purifier of this embodiment has all set up the structure of making an uproar of falling at installation apron 2, booster pump and outlet line 4, has synthesized the noise that has reduced the purifier.
Referring to fig. 1-2, the binding apparatus 5 of the present embodiment includes a binding structure 5-1 and a connecting structure 5-2, wherein the binding structure 5-1 wraps and binds the output pipeline 4, and the connecting structure is connected to the binding structure and fixed in a tensioned state in the housing 1.
Specifically, the binding structure 5-1 is composed of a binding pipe which wraps the binding output pipeline 4 in a sleeving manner, and the connecting structure 5-2 is composed of a sheet-shaped mounting strip.
This embodiment is connected the back through a slice mounting bar and constraint pipe, and is fixed with the tensioning of constraint pipe through this slice mounting bar again.
In other embodiments of the present invention, the binding device 5 is a sheet, different regions of the binding device form a binding structure 5-1 and a connecting structure 5-2, and the binding structure 5-1 wraps and binds the output pipeline 4 in a winding manner and then fixes the wrapped state in an adhering or binding manner.
The binding apparatus 5 of the present embodiment has a mounting bar formed integrally with a binding tube.
In order to improve the performance of the restraining tube against the vibration of the output pipeline 4, in other embodiments of the invention, the restraining tube may also be fixed by a plurality of mounting strips. Preferably, a plurality of mounting bars are fixed in the housing 1 in tension to the surrounding of the binding pipe at different angles.
Referring to fig. 1-2, in this embodiment, the end of the mounting bar is provided with a mounting hole 5-2-1, a hook 6 is provided at the fixing position of the mounting bar in the housing 1, and the mounting hole 5-2-1 can be hung and held on the hook 6 by slight deformation of the mounting bar, so that the mounting bar can be in a tensioned state.
Referring to fig. 3 to 4, the noise reduction means provided at the mounting cover plate 2 is composed of a sealing tape 7 and a sound-absorbing cotton 8 which are sequentially covered on the inner side surface of the mounting cover plate 2.
Sealing adhesive tape 7 covers installation apron 2 inside surface, can have certain barrier action to the noise of outwards propagating from casing 1, makes the noise constantly reflect on sealing adhesive tape 7 surface, has increased the propagation path of noise to constantly dissipate noise energy in inhaling sound cotton 8, thereby reach the purpose that reduces the noise.
Preferably, the sealing tape 7 of the present embodiment is an aluminum foil tape. In other embodiments of the present invention, the sealing tape may be other tapes capable of blocking noise, for example, a 3M tape.
In this embodiment, the sealing tape 7 covers the entire inner surface of the mounting cover plate 2, the sound-absorbing cotton 8 is attached to the surface of the sealing tape, and the sealing tape 7 has an attaching edge corresponding to the mounting surface on the housing 1 at the periphery of the sound-absorbing cotton 8.
The attaching edge of the sealing adhesive tape 7 positioned at the periphery of the sound absorption cotton can be overlapped with the edge of the mounting surface of the shell 1, so that the sealing effect is achieved.
In this embodiment, the sound-absorbing cotton 8 is bonded to the sealing tape 7, the bonding edge is bonded to the mounting surface of the housing 1, and the sound-absorbing cotton has a density of 300g/m2The bicomponent sound absorption cotton.
The attaching edge is connected with the shell 1 in an adhesive way, so that the shell 1 and the sealing adhesive tape 7 are sealed and fixed.
Inhale cotton 8 just to the major component region of purifier, this region is just the noise enrichment district of purifier, inhales cotton 8 of sound and plays a fine absorption to the noise of outside scattering, and its mechanism of absorbing the noise is mainly: the inside even micro-hole that has of sound cotton is inhaled to two ingredients, because the vibration that can arouse the air when the noise spreads the sound cotton to the bi-component, can arouse the air vibration in the micro-hole of sound cotton 8 inside of inhaling, this part air vibration can rub each other with the cotton 8 fibre of sound of inhaling on every side, produces heat energy, and then the effectual vibration energy with the noise turns into heat energy, accomplishes the dissipation to noise energy, reduces the noise.
The sound-absorbing cotton 8 of this example has a density of 300g/m2The double-component sound absorption cotton is formed by combining polypropylene and polyethylene terephthalate blowing fuses.
In other embodiments of the invention, the sound-absorbing cotton 8 may be other types of sound-absorbing cotton having a sound-absorbing effect.
Referring to fig. 5-7, the booster pump 3 of the present embodiment is supported on a supporting surface provided at a lower portion of the housing 1, a damping pad 9 is provided between the booster pump 3 and the supporting surface, a groove 9-1 adapted to a shape of the booster pump and into which the pump head is to be laid is provided at an upper portion of the damping pad 9, an elongated mounting groove 9-2 is provided at a lower portion of the damping pad 9, and an elongated protrusion inserted into the mounting groove 6-2 is provided on the supporting surface.
The installation of the vibration-damping pad 9 can reduce the vibration noise generated due to the hard connection between the booster pump 3 and the housing 1, the elongated protrusion provided on the lower supporting surface of the housing 1 is embedded into the elongated mounting groove 9-2 provided on the lower portion of the vibration-damping pad 9, facilitating the positioning and installation of the vibration-damping pad 9, and the pump head of the booster pump 3 has an acting force on the vibration-damping pad 9 in the direction shown in fig. 5, which includes the gravity of the pump head of the booster pump 3, so that the vibration-damping pad 9 can be simply and firmly installed in the housing 1. Thereby damping pad 9 can constantly take place the damping deformation under the vibration of booster pump and effectively consume the energy of the 3 pump head vibrations of booster pump, effectively reduce the vibration of booster pump 3.
Referring to fig. 7, the damping grooves 9-3 are further provided at the bottom of the damping pad 9 of the present embodiment, so as to further reduce the vibration of the booster pump 3 by making full use of the entire damping pad 9.
In the embodiment, the restraint device 5 and the vibration damping pad 9 are integrally molded by nitrile rubber with a damping coefficient of 0.4 and a Shore hardness of 40-50. In other embodiments of the present invention, the restraining device 5 and the damping pad 9 may be made of rubber with other parameters, or the restraining device 5 and the damping pad 9 may be made of other materials than rubber, or the restraining device 5 and the damping pad 9 may be made of different materials, and those skilled in the art can select them according to the use requirements.
In conclusion, the water purifier of the embodiment adopts comprehensive means such as vibration reduction, frequency avoidance, sound absorption and insulation, does not change the internal structure of the water purifier, and uses a simple, convenient, easy-to-install and low-cost mode to weaken the noise of the household water purifier. Damping, namely damping vibration at the booster pump through a damping pad, and damping vibration at the output pipeline of the booster pump through wrapping and bounding, so as to reduce noise generated by vibration; avoiding frequency, namely avoiding modal response between a booster pump and a shell of the water purifier, so that noise under a certain frequency is not excited, thereby reducing feedback noise; the sound absorption and insulation can consume the energy of noise as much as possible even if the sound is transmitted, thereby effectively reducing the operation noise.
Claims (10)
1. The utility model provides a domestic purifier of low noise, includes casing (1), is provided with installation apron (2) on casing (1), is provided with booster pump (3) and delivery line (4) in casing (1), its characterized in that, installation apron (2) department with the bearing structure department of booster pump (3) all is provided with the device of making an uproar that falls, the surface of delivery line (4) is provided with constraint device (5) of being made by flexible material, and this constraint device (5) will delivery line (4) parcel constraint is fixed with the tensioning state in casing (1).
2. A low-noise household water purifier according to claim 1, wherein the binding device (5) comprises a binding structure (5-1) and a connecting structure (5-2), wherein the binding structure (5-1) wraps and binds the output pipeline (4), and the connecting structure (5-2) is connected with the binding structure (5-1) and fixed in a tensioned state in the housing (1).
3. A low-noise household water purifier according to claim 2, wherein said binding device (5) is in the form of a sheet, and different areas of the binding device form said binding structure (5-1) and said connecting structure (5-2), and said binding structure (5-2) binds said output pipeline (4) in a winding manner and then fixes the bound state in an adhesive or binding manner.
4. A low-noise household water purification machine according to claim 2, wherein said binding structure (5-1) is constituted by a binding tube that binds said output pipe (4) in a nested manner, said connection structure (5-2) being constituted by a sheet-like mounting strip.
5. A low-noise domestic water purification machine according to claim 4, wherein said mounting bar is integrally formed with said restraining tube.
6. A low-noise domestic water purifier as claimed in claim 4 or 5, wherein said pipe is fixed by a plurality of said mounting bars.
7. A low-noise domestic water purifier as claimed in claim 1, wherein said noise reduction means provided at said mounting cover plate (2) is composed of a sealing tape (7) and a sound-absorbing cotton (8) which are sequentially covered on the inner surface of the mounting cover plate (2).
8. A low-noise household water purifier as claimed in claim 7, wherein said sealing tape (7) covers the whole inside surface of said mounting cover plate (2), said sound-absorbing cotton (8) is attached to the surface of said sealing tape (7), and said sealing tape (7) has an attaching edge corresponding to the mounting surface of said housing (1) at the periphery of said sound-absorbing cotton.
9. A low-noise household water purifier as claimed in claim 8, wherein said sound-absorbing cotton (8) is adhesively connected to said sealing tape (7), said attachment edge is adhesively connected to a mounting surface of said housing (1), said sound-absorbing cotton (8) has a density of 300g/m2The bicomponent sound absorption cotton.
10. A low-noise domestic water purifier as claimed in claim 1, wherein said booster pump (3) is supported on a support surface provided at the lower part of said housing (1), a damping pad (9) is provided between said booster pump (3) and said support surface, the upper part of said damping pad (9) is provided with a groove (9-1) adapted to the shape of said booster pump (3) and into which the pump head can be laid, the lower part of said damping pad (9) is provided with an elongated mounting groove (9-2), said support surface is provided with an elongated protrusion inserted into said mounting groove (9-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111292303.1A CN113943023A (en) | 2021-11-03 | 2021-11-03 | Low-noise household water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111292303.1A CN113943023A (en) | 2021-11-03 | 2021-11-03 | Low-noise household water purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113943023A true CN113943023A (en) | 2022-01-18 |
Family
ID=79337448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111292303.1A Pending CN113943023A (en) | 2021-11-03 | 2021-11-03 | Low-noise household water purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113943023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275918A (en) * | 2021-12-07 | 2022-04-05 | 佛山市美的清湖净水设备有限公司 | Water purifier and noise improvement method thereof |
-
2021
- 2021-11-03 CN CN202111292303.1A patent/CN113943023A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275918A (en) * | 2021-12-07 | 2022-04-05 | 佛山市美的清湖净水设备有限公司 | Water purifier and noise improvement method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2846167B2 (en) | Centrifugal blower, blower of automotive air conditioner and automotive air conditioner equipped with centrifugal blower | |
| CN113943023A (en) | Low-noise household water purifier | |
| US10458376B2 (en) | Air cleaner for internal combustion engine | |
| JP2005518918A (en) | Food disposal disposer with reduced noise | |
| JP3808960B2 (en) | Air pump | |
| CN110285495A (en) | A kind of vibration isolation sound arrester and air-conditioner outdoor unit | |
| JP2852106B2 (en) | Vacuum cleaner and electric blower | |
| CN216426784U (en) | Low-noise household water purifier | |
| JP3296928B2 (en) | Sound absorbing wall structure | |
| JPH10103728A (en) | Silencer | |
| CN208221203U (en) | A kind of low-noise fan | |
| CN217710011U (en) | Drying apparatus | |
| JPH0979199A (en) | Motor-driven air blower | |
| JP2005098272A (en) | Centrifugal fan | |
| JP4131535B2 (en) | Noise reduction device for compressor unit | |
| CN211821269U (en) | Silencer for building water supply and drainage pipeline | |
| RU2389880C1 (en) | Combined noise suppressor by kochetov | |
| WO2014108373A1 (en) | Audio output devices | |
| JP2004190723A (en) | Mounting method of soundproofing material, soundproofed pipe, and manufacturing method therefor | |
| JP4975167B2 (en) | Vibration suppression bracket for speaker unit, mounting device, and mounting structure | |
| CN210327951U (en) | Inhale sound module and audio amplifier | |
| CN219550699U (en) | Low noise air conditioner | |
| CN212360149U (en) | Noise reduction structure of booster pump, booster pump module and air conditioner | |
| CN111312202B (en) | Sound-deadening equipment | |
| CN219271849U (en) | Turbine box device and breathing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |