CN108662213A - Check-valves and its ventilation equipment - Google Patents
Check-valves and its ventilation equipment Download PDFInfo
- Publication number
- CN108662213A CN108662213A CN201810675060.1A CN201810675060A CN108662213A CN 108662213 A CN108662213 A CN 108662213A CN 201810675060 A CN201810675060 A CN 201810675060A CN 108662213 A CN108662213 A CN 108662213A
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- China
- Prior art keywords
- block piece
- check
- valves
- return
- fluid channel
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Flow Control Members (AREA)
Abstract
The present invention provides a kind of check-valves and its ventilation equipment, it is related to kitchen utensils technical field, the technical issues of non-return block piece for solving check-valves existing in the prior art is easily rotated under torsional spring or outer force effect so as to cause by the air-flow unstable generation noise of fluid channel.The check-valves includes non-return block piece and denoising device, non-return block piece is movably connected on the fluid channel of check-valves and can be moved to the position closed fluid channel and open fluid channel, and non-return block piece can stop the fluid reflux flowed through when being in the position for closing fluid channel；Denoising device is arranged on the conduit wall of fluid channel or fluid channel and can fix the position of non-return block piece when non-return block piece is in and opens fluid channel location.Non-return block piece when the present invention is for the fixed fluid channel location in opening is to reduce the noise for causing fluid to generate because non-return block piece vibrates.
Description
Technical field
The present invention relates to kitchen utensils technical fields, more particularly, to a kind of check-valves and its ventilation equipment.
Background technology
Nowadays, stepping up with the development of social economy and living standards of the people, people's rhythm of life is continuous
Accelerate, while people increasingly focus on the quality of life household, especially more and more people and are concerned about kitchen health.
Range hood occupies prodigious proportion as kitchen appliance, especially in kitchen ventilator operational process inevitably
Noise is will produce, with the prosperity of kitchen appliance industry, air quantity, noise, cleaning about fume-exhausting have become the main of user
Pain spot.However, the design of range hood check-valves at present only considers to prevent flue gas from flowing backwards and close during smoke pumping mostly
Envelope degree is not paid attention in terms of to additional functions such as product noise reduction, promotion qualities, and check-valves not only influences making an uproar for smoke evacuation
Sound, while primary structure of the check-valves as lampblack-preventing recharge, protect the health of user.
Check-valves includes non-return valve seat, non-return valve support, check-valves shaft and non-return block piece, and non-return valve support is installed on only
It returns on valve seat, check-valves shaft is installed in non-return valve support, and check-valves catch is installed in check-valves shaft and can be along non-return
Valve shaft rotates, and a torsional spring is equipped in check-valves shaft, convenient for non-return block piece under the double action of torsional spring and its own gravity
It can smoothly close.
Applicants have discovered that at least there is following technical problem in the prior art：
When smoke machine works, high speed is discharged outside the wind direction in volute of blower, and non-return block piece is blown upwards around check-valves shaft
It rises, torsional spring is generated the power for making non-return block piece move downward trend by compression, and non-return block piece rotates down (non-return under that force
Block piece is pressed downward) resistance to air-flow is increased, to increase the noise of the air-flow generation by fluid channel.Meanwhile by
In pressure transient in pressure transient in common flue, kitchen, the up and down motion of non-return block piece is also resulted in, smoke machine is made to generate
Air quantity is unstable, generates abnormal sound.Therefore, non-return block piece is the main contributor for causing check-valves to generate noise.
Invention content
The purpose of the present invention is to provide check-valves and its ventilation equipment, to solve check-valves existing in the prior art
Non-return block piece is easily rotated under torsional spring or outer force effect so as to cause by the unstable generation noise of air-flow of fluid channel
The technical issues of.Many technique effects that optimal technical scheme in many technical solutions provided by the invention can be generated refer to
It is set forth below.
To achieve the above object, the present invention provides following technical schemes：
Check-valves provided by the invention, including non-return block piece and denoising device, wherein：The non-return block piece is movably connected on
On the fluid channel of check-valves and closes said fluid channel can be moved to and open the position of the fluid channel, it is described to stop
The fluid reflux flowed through can be stopped by returning when block piece is in the position of closes said fluid channel；The denoising device is arranged described
And it can be when the non-return block piece be in and opens the fluid channel location on the conduit wall of fluid channel or the fluid channel
The position of the non-return block piece is fixed against the non-return block piece rotation.
Preferably, both the denoising device and the non-return block piece at least one be made or be powered for magnetisable material
After can generate magnetic force, the denoising device, which is adsorbed the non-return block piece by magnetic force, to be fixed.
Preferably, the denoising device is magnetic absorption mechanism or snap device.
Preferably, the magnetic absorption mechanism includes be installed on the conduit wall of the fluid channel or fluid channel
One adsorbent equipment and the second adsorbent equipment being installed on the non-return block piece, first adsorbent equipment are adsorbed with described second
Device can fix the non-return block piece when coordinating.
Preferably, at least one of first adsorbent equipment and second adsorbent equipment are magnetic means, another
A magnetic means or iron device can mutually to be adsorbed with it.
Preferably, first adsorbent equipment is electromagnet, and second adsorbent equipment is mutually to be adsorbed with the electromagnet
Iron device.
Preferably, second adsorbent equipment is fixed by way of bonding or welding with the non-return block piece.
Preferably, the check-valves includes non-return valve support and non-return valve seat, and the non-return valve seat forms fluid channel
Conduit wall, the non-return valve support are set on the fluid channel, and shaft, the non-return are provided in the non-return valve support
Block piece turning set is set in the shaft, and first adsorbent equipment is set in the non-return valve support, the non-return block piece
The first adsorbent equipment can be adsorbed with second adsorbent equipment with described in fixation described in when in the opening fluid channel location
Non-return block piece.
Preferably, the non-return valve support includes check-valves rack body and interconnecting piece, the interconnecting piece and the non-return
Valve support ontology is connected, and the mounting hole for allowing the first adsorbent equipment to pass through, first absorption are offered on the interconnecting piece
Device is set in the mounting hole.
Preferably, the interconnecting piece is fixedly installed on the centre position of the check-valves rack body along its length.
Preferably, the interconnecting piece includes first connecting portion and second connecting portion, the first connecting portion and described second
Interconnecting piece is symmetrically disposed on the both sides of the check-valves shaft and is fixedly connected with the check-valves rack body.
Preferably, the non-return block piece includes the first catch and the second catch, first catch and second catch
Turning set is set in the shaft, and first catch and the second gear on piece are both provided with second adsorbent equipment, institute
Stating the first adsorbent equipment can mutually adsorb with the second adsorbent equipment of first catch and the second gear on piece.
Preferably, the non-return valve body is one way stop peturn valve used for range hood.
A kind of ventilation equipment are installed with the check-valves in the ventilation equipment.
Preferably, the ventilation equipment are range hood, exhaust fan or ventilating fan.
Preferably, the denoising device includes the electromagnet being set in the non-return valve support and is set to the non-return
The iron plate mutually adsorbed with the electromagnet on block piece, the conducting wire of the electromagnet and the circuit of the host of the range hood connect
It connects, the keying of the fume-exhausting host controls the energized state of the electromagnet.
Preferably, the bottom of the check-valves is fixedly connected with and is connected to the air outlet of the host of the range hood, described
The top of check-valves is for connecting exhaust telescoping tube, and when host work of the range hood, the non-return block piece faced away from institute
The direction for stating air outlet is rotated to open the fluid channel；When the range hood is closed, the denoising device can also release
Fixation to the non-return block piece is so that the non-return block piece turns to the position of closes said fluid channel.
Check-valves provided by the invention, including non-return block piece and fluid channel or fluid channel in check-valves are set
Denoising device on conduit wall, non-return block piece, which is movably connected on fluid channel and can be moved to, closes fluid channel and opening
The position of fluid channel, when non-return block piece is in opening fluid channel location, denoising device can fix the position of non-return block piece
To prevent non-return block piece from rotating, the resistance for the air-flow being discharged by fluid channel is reduced, to reduce through fluid channel
The noise that air-flow generates, while avoiding the noise generated because non-return block piece vibrates.
In addition, when check-valves provided by the invention is on range hood, the normal work of range hood is not influenced completely
Make, when range hood works, non-return block piece is blown afloat on the wind direction in volute of blower to open the gas channel of check-valves, this
When the denoising device non-return block piece can be fixed against non-return block piece rotation (at this time non-return block piece no longer have downward pressure
Power), the resistance for the air-flow being discharged by fluid channel is reduced, while eliminating due to pressure transient in common flue, kitchen
Intra-atrial pressure power is unstable, and non-return block piece is caused to move up and down, and keeps the air quantity that smoke machine generates unstable, generates asking for abnormal sound
Topic；When range hood is closed, denoising device can also release the fixation to non-return block piece so that non-return block piece is in gravity and torsional spring
Double action under along check-valves pivoted downward to close fluid channel position.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the detonation configuration figure of check-valves provided in an embodiment of the present invention；
Fig. 2 is the vertical view of check-valves provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of non-return valve support provided in an embodiment of the present invention；
Fig. 4 is the overall structure diagram when non-return block piece of check-valves provided in an embodiment of the present invention is opened；
Fig. 5 is the enlarged drawing of part A in Fig. 4；
Fig. 6 is the overall structure diagram when non-return block piece of check-valves provided in an embodiment of the present invention is closed.
Reference numeral：1, non-return block piece；11, the first catch；12, the second catch；2, magnetic absorption mechanism；21, electromagnet；
22, iron device；3, non-return valve support；31, check-valves rack body；32, interconnecting piece；321, first connecting portion；322, second
Interconnecting piece；4, shaft；5, fluid channel；6, non-return valve seat.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, technical scheme of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
The present invention provides a kind of check-valves, including non-return block piece 1 and denoising device, wherein：Non-return block piece 1 is flexibly connected
In on the fluid channel 5 of check-valves and can be moved to close fluid channel 5 and open fluid channel 5 position, non-return block piece 1
It can stop the fluid reflux flowed through when in the position for closing fluid channel 5；Denoising device setting is logical in fluid channel 5 or fluid
On the conduit wall in road 5 and non-return block piece 1 can be fixed against non-return when non-return block piece 1 is in and opens 5 position of fluid channel
Block piece 1 rotates.The resistance for reducing the air-flow being discharged by fluid channel 5 generates to reduce the air-flow through fluid channel 5
Noise, while avoiding the noise generated because non-return block piece 1 vibrates.
As optionally embodiment of the embodiment of the present invention, both denoising device and non-return block piece 1 at least one be
Magnetisable material can generate magnetic force after being made or being powered, denoising device, which is adsorbed non-return block piece 1 by magnetic force, to be fixed.It needs to illustrate
Be, if denoising device is magnetisable material be made or be powered after can generate magnetic force, non-return block piece 1 is by can be by magnetic force and noise reduction
What the material (such as irony) that device mutually adsorbs was made, then denoising device is can to adsorb non-return block piece 1 by magnetic force to fix
's；Secondly, if non-return block piece 1 can generate magnetic force after being made or be powered for magnetisable material, denoising device is by that can pass through magnetic force
What the material (such as irony) mutually adsorbed with denoising device was made, then be also that can pass through between denoising device and non-return block piece 1
Magnetic-adsorption is fixed；Furthermore both denoising device and non-return block piece 1 are that can generate magnetic after magnetisable material is made or is powered
Non-return block piece 1 can also be adsorbed by magnetic force and be fixed by power, denoising device.
As the embodiment of the present invention, optionally embodiment, denoising device are magnetic absorption mechanism 2 or snap device.Buckle
Mechanism include fixture block and with the matched card slot of the fixture block, fixture block may be disposed on non-return block piece 1, and card slot may be disposed at fluid
On channel, when non-return block piece 1 is opened, the fixture block being set on non-return block piece 1 and the card slot being set on fluid channel coordinate
Non-return block piece 1 can be fixed.In view of in use, fixed non-return block piece 1 convenience, preferably set denoising device to
Magnetic absorption mechanism, specifically, magnetic absorption mechanism 2 includes the be installed on the conduit wall of fluid channel 5 or fluid channel 5
When one adsorbent equipment and the second adsorbent equipment being installed on non-return block piece 1, the first adsorbent equipment and the second adsorbent equipment coordinate
Non-return block piece 1 can be fixed.
Specifically, at least one in the first adsorbent equipment and the second adsorbent equipment is magnetic means, another is can be with
Its magnetic means mutually adsorbed or iron device 22.Wherein, the first adsorbent equipment can be electromagnet 21, and the second adsorbent equipment is
With the iron device 22 of 21 phase of electromagnet absorption, such as small iron plate, non-return block piece 1 can be fixed on by way of bonding or welding
On.
Embodiment 1:
Check-valves provided by the invention, referring to Fig. 1 and Fig. 2, check-valves include non-return valve support 3 and non-return valve seat 6, non-return
Valve seat 6 forms the conduit wall of fluid channel 5, and non-return valve support 3 is set on fluid channel 5, is provided with and turns in non-return valve support 3
Axis 4,1 turning set of non-return block piece are set in shaft 4；Non-return block piece 1 includes the first catch 11 and the second catch 12, the first catch 11
It is set in shaft 4 with 12 turning set of the second catch, it is (small to be both provided with the second adsorbent equipment on the first catch 11 and the second catch 12
Iron plate), the first adsorbent equipment (electromagnet 21) is set in non-return valve support 3, and non-return block piece 1, which is in, opens fluid channel 5
The first adsorbent equipment can be adsorbed with the second adsorbent equipment to fix non-return block piece 1 when setting.
Referring to Fig. 3 and Fig. 5, non-return valve support 3 includes check-valves rack body 31 and interconnecting piece 32, and non-return valve body can be with
For one way stop peturn valve used for range hood.Interconnecting piece 32 is connected with check-valves rack body 31, in order to preferably fix non-return gear
Part 1, interconnecting piece 32 include first connecting portion 321 and second connecting portion 322, and first connecting portion 321 and second connecting portion 322 are symmetrical
It is set to the both sides of check-valves shaft 4 and is fixedly installed on the centre position of check-valves rack body 31 along its length,
The mounting hole for allowing electromagnet 21 to pass through is offered on interconnecting piece 32, electromagnet 21 is set in mounting hole and can pass through adhesive
It is fixed Deng by electromagnet 21 and interconnecting piece 32.
Embodiment 2:
Present embodiments provide a kind of ventilation equipment, ventilation equipment (can be range hood, exhaust fan or ventilating fan etc.)
Inside it is installed with check-valves.
When ventilation equipment are range hood, the bottom of check-valves is fixedly connected with and is connected to the outlet air of the host of range hood
Mouthful, for connecting exhaust telescoping tube, denoising device includes 21 He of electromagnet being set in non-return valve support 3 at the top of check-valves
The iron plate adsorbed with 21 phase of electromagnet being set on non-return block piece 1, the electricity of the conducting wire of electromagnet 21 and the host of range hood
Road connects, the energized state of the keying control electromagnet 21 of the host of range hood, specifically, the host work of range hood
When, the main motor rotation in the host of range hood, non-return block piece 1 (the first catch 11 and the second catch 12), which is blown up, to rotate
Axis 4 merges upwards, while electromagnet 21 is powered, and generates the suction to non-return block piece 1, after non-return block piece 1 is blown to electromagnet 21,
Small iron plate thereon is attracted by electromagnet 21, to be attracted on electromagnet 21 so that non-return block piece 1 no longer has downward
Power, non-return block piece 1 are rotated to open fluid channel 5, as shown in Figure 4 towards away from the direction of air outlet；It is main when range hood is closed
Motor powers off, and electromagnet 21 powers off, and electromagnet 21 releases consolidating to non-return block piece 1 by releasing the suction-operated to small iron plate
Fixed, non-return block piece 1 is swung down to along check-valves shaft 4 under the double action of gravity and torsional spring elastic force and closes fluid channel 5
Position, as shown in Figure 5.
When check-valves provided by the invention is used for range hood, does not influence the normal work of range hood completely, inhaling
When kitchen ventilator works, non-return block piece 1 is blown afloat on the wind direction in cooking-fume exhauster blower volute to open the gas channel of check-valves,
Non-return block piece 1 can be fixed against the rotation of non-return block piece 1 (non-return block piece 1 no longer has downward at this time by the denoising device at this time
Power), reduce the resistance for the air-flow being discharged by fluid channel 5, while eliminating due to pressure transient in common flue,
Pressure transient in kitchen causes non-return block piece to move up and down, and keeps the air quantity that smoke machine generates unstable, generates asking for abnormal sound
Topic；When range hood is closed, denoising device can also release the fixation to non-return block piece 1 so that non-return block piece 1 is in gravity and torsion
The position for closing fluid channel 5 is swung down under the double action of spring along check-valves shaft 4.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (17)
1. a kind of check-valves, which is characterized in that including non-return block piece (1) and denoising device, wherein：
The non-return block piece (1) is movably connected on the fluid channel (5) of check-valves and can be moved to closes said fluid channel
(5) and the position of the opening fluid channel (5), the non-return block piece (1) are in the position of closes said fluid channel (5)
When can stop the fluid reflux flowed through；
The denoising device is arranged on the conduit wall of the fluid channel (5) or the fluid channel (5) and can stop described
It returns and the position of the non-return block piece (1) is fixed against described stop when block piece (1) is in opening fluid channel (5) position
Return block piece (1) rotation.
2. check-valves according to claim 1, which is characterized in that both the denoising device and the non-return block piece (1)
At least one can generate magnetic force after being made or be powered for magnetisable material, and the denoising device is kept off the non-return by magnetic force
Part (1) absorption is fixed.
3. check-valves according to claim 1, which is characterized in that the denoising device is magnetic absorption mechanism (2) or card
Buckle mechanism.
4. check-valves according to claim 3, which is characterized in that the magnetic absorption mechanism (2) is described including being installed on
The first adsorbent equipment on the conduit wall of fluid channel or fluid channel and the second absorption being installed on the non-return block piece (1)
Device, can be fixed by the non-return block piece (1) when first adsorbent equipment coordinates with second adsorbent equipment.
5. check-valves according to claim 4, which is characterized in that first adsorbent equipment and second adsorbent equipment
At least one of be magnetic means, another is the magnetic means that can be mutually adsorbed with it or iron device (22).
6. check-valves according to claim 4, which is characterized in that first adsorbent equipment is electromagnet (21), described
Second adsorbent equipment is the iron device (22) mutually adsorbed with the electromagnet (21).
7. check-valves according to claim 4, which is characterized in that second adsorbent equipment passes through bonding or the side welded
Formula is fixed with the non-return block piece (1).
8. check-valves according to claim 4, which is characterized in that the check-valves includes non-return valve support (3) and non-return
Valve seat (6), the non-return valve seat (6) form the conduit wall of fluid channel, and it is logical that the non-return valve support (3) is set to the fluid
On road (5), shaft (4) is provided on the non-return valve support (3), non-return block piece (1) turning set is set to the shaft (4)
On, first adsorbent equipment is set on the non-return valve support (3), and the non-return block piece (1), which is in, opens the fluid
First adsorbent equipment described in when channel (5) position can be adsorbed with second adsorbent equipment with the fixation non-return block piece (1).
9. check-valves according to claim 8, which is characterized in that the non-return valve support (3) includes non-return valve support sheet
Body (31) and interconnecting piece (32), the interconnecting piece (32) are connected with the check-valves rack body (31), the interconnecting piece
(32) mounting hole for allowing the first adsorbent equipment to pass through is offered on, first adsorbent equipment is set in the mounting hole.
10. check-valves according to claim 9, which is characterized in that the interconnecting piece (32) is fixedly installed on the non-return
The centre position of valve support ontology (31) along its length.
11. check-valves according to claim 9, which is characterized in that the interconnecting piece (32) includes first connecting portion (321)
With second connecting portion (322), the first connecting portion (321) and the second connecting portion (322) are symmetrically disposed on the non-return
It the both sides of valve shaft (4) and is fixedly connected with the check-valves rack body (31).
12. check-valves according to claim 8, which is characterized in that the non-return block piece (1) include the first catch (11) and
Second catch (12), first catch (11) and second catch (12) turning set are set in the shaft (4), and described the
Second adsorbent equipment is both provided on one catch (11) and second catch (12), first adsorbent equipment can be with institute
The first catch (11) is stated mutually to adsorb with the second adsorbent equipment on second catch (12).
13. according to claim 1~12 any one of them check-valves, which is characterized in that the non-return valve body is fume-exhausting
Machine one way stop peturn valve.
14. a kind of ventilation equipment, which is characterized in that be installed with claim 1~13 any one of them in the ventilation equipment
Check-valves.
15. ventilation equipment according to claim 14, which is characterized in that the ventilation equipment are range hood, exhaust fan
Or ventilating fan.
16. ventilation equipment according to claim 15, which is characterized in that the denoising device includes being set to the non-return
Electromagnet (21) in valve support (3) and the iron mutually adsorbed with the electromagnet (21) being set on the non-return block piece (1)
The conducting wire of piece, the electromagnet (21) is connect with the circuit of the host of the range hood, the keying control of the fume-exhausting host
Make the energized state of the electromagnet (21).
17. ventilation equipment according to claim 15, it is characterised in that：The bottom of the check-valves is fixedly connected and is connected to
The top of the air outlet of the host of the range hood, the check-valves is vented telescoping tube for connecting, the range hood
When host work, the direction that the non-return block piece (1) faces away from the air outlet is rotated to open the fluid channel (5),
When the range hood is closed, the denoising device can also release the fixation to the non-return block piece (1) so that the non-return is kept off
Part (1) turns to the position of closes said fluid channel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810675060.1A CN108662213A (en) | 2018-06-26 | 2018-06-26 | Check-valves and its ventilation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810675060.1A CN108662213A (en) | 2018-06-26 | 2018-06-26 | Check-valves and its ventilation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108662213A true CN108662213A (en) | 2018-10-16 |
Family
ID=63772422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810675060.1A Pending CN108662213A (en) | 2018-06-26 | 2018-06-26 | Check-valves and its ventilation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108662213A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529903A (en) * | 2019-09-19 | 2019-12-03 | 珠海格力电器股份有限公司 | A kind of range hood and its control method, check valve assembly |
| CN113564880A (en) * | 2020-04-29 | 2021-10-29 | 青岛海尔滚筒洗衣机有限公司 | Drum washing machine |
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| CN1041848A (en) * | 1988-10-07 | 1990-05-02 | 陈启星 | Double-coil electromagnetic switch |
| CN2263245Y (en) * | 1996-07-26 | 1997-09-24 | 南海市南桂家用电器工业公司 | Check valve for kitchen ventilator |
| CN2379668Y (en) * | 1999-01-23 | 2000-05-24 | 徐振 | Combination and low resistance type check valve |
| CN203052773U (en) * | 2012-10-30 | 2013-07-10 | 宁波方太厨具有限公司 | Air outlet housing of smoke exhaust ventilator |
| CN203488795U (en) * | 2013-08-21 | 2014-03-19 | 珠海格力电器股份有限公司 | Check valve of extractor hood and extractor hood |
| CN205207793U (en) * | 2015-10-26 | 2016-05-04 | 德阳九鼎智远知识产权运营有限公司 | One -way automatic valve |
| CN107631034A (en) * | 2017-09-27 | 2018-01-26 | 火星人厨具股份有限公司 | A kind of assisting in opening mechanism of flute check valve |
| CN208503570U (en) * | 2018-06-26 | 2019-02-15 | 珠海格力电器股份有限公司 | Check-valves and its ventilation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110529903A (en) * | 2019-09-19 | 2019-12-03 | 珠海格力电器股份有限公司 | A kind of range hood and its control method, check valve assembly |
| CN113564880A (en) * | 2020-04-29 | 2021-10-29 | 青岛海尔滚筒洗衣机有限公司 | Drum washing machine |
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