CN109059077B - Range hood and cleaning system and joint assembly for range hood - Google Patents

Abstract

The invention discloses a range hood, a cleaning system and a joint assembly for the range hood, wherein the cleaning system comprises: a cleaning medium supply assembly having a medium outlet for supplying a cleaning medium; the inlet is suitable for an internal cleaning branch communicated with the medium outlet; the import is suitable for the outside washing branch road with a medium outlet intercommunication, be equipped with detachable outside washing subassembly on the outside washing branch road, when outside washing subassembly is adorned, inside washing branch road can break off and outside washing branch road can switch on in order to wash the outside of range hood, when outside washing subassembly is pulled down, outside washing branch road can break off and inside washing branch road can switch on in order to wash the inside of range hood, wherein, inside washing branch road takes place the state switching under the trigger of at least one in the dismouting action of outside washing subassembly and the pressure of inside washing branch road. The cleaning system for the range hood provided by the embodiment of the invention can clean the inside and the outside of the range hood.

Description

Range hood and cleaning system and joint assembly for range hood

The application is a division with the application date of '2018-01-11, the application number of' 201810027740.2 and the application name of 'range hood and cleaning system for range hood'.

Technical Field

The invention relates to the technical field of range hoods, in particular to a range hood, a cleaning system for the range hood and a joint assembly for the range hood.

Background

The cigarette machine is in the use, and the greasy dirt adsorbs in the outside of runner and cigarette machine, and the windage of cigarette machine improves, can influence cigarette machine performance, and the outside greasy dirt of cigarette machine direct influence user uses the experience and the culinary art state of product in culinary art process.

In the related art, the range hood only has an internal cleaning function, the internal of the range hood can be cleaned in a mode of heating oil, steam, hot water, cold water and the like, but the external of the range hood, such as the external surface of the range hood, a cooking bench and the like, cannot be cleaned. The outside of cigarette machine is washd mainly using the steam cleaning machine of manual work or purchase in addition etc. and the manual cleaning can't thoroughly decontaminate, and complex operation is hard, and purchase steam cleaning machine in addition then caused economic waste.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the joint component for the range hood, the joint component can realize the detachable installation of the external cleaning component, and the installation structure is simple and firm.

The invention also provides a cleaning system for the range hood, which is provided with the joint assembly, and the cleaning system for the range hood can clean the inside and the outside of the range hood.

The invention also provides a range hood with the cleaning system.

The cleaning system for the range hood according to the embodiment of the invention comprises: a cleaning medium supply assembly for supplying a cleaning medium, the cleaning medium supply assembly having a medium outlet; an internal cleaning branch, an inlet of the internal cleaning branch being adapted to communicate with the media outlet; the inlet of the external cleaning branch is suitable for being communicated with the medium outlet, a detachable external cleaning component is arranged on the external cleaning branch, when the external cleaning component is assembled, the internal cleaning branch can be disconnected and the external cleaning branch can be conducted to clean the outside of the range hood, when the external cleaning component is disassembled, the external cleaning branch can be disconnected and the internal cleaning branch can be conducted to clean the inside of the range hood, wherein the internal cleaning branch is in state switching under the triggering of at least one of the disassembling and assembling action of the external cleaning component and the pressure of the internal cleaning branch.

The cleaning system for the range hood, provided by the embodiment of the invention, can clean the inside and the outside of the range hood, is more economical and labor-saving in use, is more neat and attractive in appearance, is simpler and more convenient to operate, and can meet more use requirements.

In addition, the cleaning system for the range hood according to the above embodiment of the present invention may further have the following additional technical features:

according to the cleaning system for the range hood, provided by the embodiment of the invention, the external cleaning branch is immediately conducted when the external cleaning component is assembled and immediately disconnected when the external cleaning component is disassembled, and the internal cleaning branch is immediately disconnected or delayed to be disconnected when the external cleaning component is assembled and immediately conducted or delayed to be conducted when the external cleaning component is disassembled.

According to some embodiments of the invention, a pressure valve is provided on the internal cleaning branch, the pressure valve opening to turn on the internal cleaning branch when the pressure of the internal cleaning branch reaches a first predetermined pressure and closing to turn off the internal cleaning branch when the pressure of the internal cleaning branch is lower than the first predetermined pressure.

Further, the external wash branch has a branch junction portion, the external wash assembly comprising: an outer cleaning part for discharging the cleaning medium; the outer joint portion, outer joint portion with outer washing portion links to each other and detachably with branch's joint portion links to each other, outer joint portion with when branch's joint portion links to each other, the export of branch's joint portion with the import intercommunication of outer joint portion, outer joint portion with when branch's joint portion separates, the export of branch's joint portion is closed.

In some embodiments of the present invention, the internal cleaning branch, the external cleaning branch and the cleaning medium supply assembly are communicated with each other by a two-position three-way control valve, and the control valve is located at an external conducting position for conducting the external cleaning branch when the external cleaning assembly is installed and at an internal conducting position for conducting the internal cleaning branch when the external cleaning assembly is removed.

Further, a microswitch is arranged on the external cleaning branch, and is triggered to control the control valve to be in the external conduction position when the external cleaning assembly is assembled and to control the control valve to be in the internal conduction position when the external cleaning assembly is disassembled.

Further, the external cleaning branch has a branch joint portion, the micro switch is provided on the branch joint portion, and the external cleaning assembly includes: an outer cleaning part for discharging the cleaning medium; outer joint portion, outer joint portion with outer washing portion link to each other and detachably with branch road joint portion links to each other, outer joint portion with when branch road joint portion links to each other, outer joint portion ends to micro-gap switch's contact just the export of branch road joint portion with the import intercommunication of outer joint portion, outer joint portion with when branch road joint portion separates, outer joint portion releases micro-gap switch's contact just the export of branch road joint portion is closed.

According to some embodiments of the present invention, a valve core assembly is disposed at the outlet of the branch joint portion, and when the outer joint portion is connected to the branch joint portion, the valve core assembly moves to an open position where the outlet is opened under the stop of the outer joint portion and returns to a closed position where the outlet is closed without the stop of the outer joint portion when the outer joint portion is separated from the branch joint portion.

Further, the spool assembly includes: one end of the valve core is suitable for abutting against the outer joint part, the other end of the valve core is provided with a sealing part for sealing the outlet, and the valve core is provided with a fluid channel for communicating the outlet and the inlet when the valve core assembly is in an open position; the valve core is suitable for being reset to the closing position under the stop of the first elastic piece.

Further, the first elastic element is a spiral spring sleeved on the valve core, and the sealing part is a sealing ring sleeved on the valve core.

According to some embodiments of the invention, a clamping groove is provided on the branch joint portion, and the outer joint portion comprises: a junction block having an inlet adapted to communicate with an outlet of the outer junction block; the clamping hook is connected with the joint pipe and clamped in the clamping groove.

According to some embodiments of the invention, a clamping groove is provided on the branch joint portion, the contact of the micro switch extends into the clamping groove, and the outer joint portion comprises: a junction block having an inlet adapted to communicate with an outlet of the outer junction block; the clamping hook is connected with the joint pipe and is suitable for being clamped in the clamping groove and stopping the contact to trigger the micro switch.

Further, the trip includes: the clamping hook head is suitable for being clamped in the clamping groove and is suitable for abutting against the contact; the trip arm, the trip arm press down the position and bounce between the position for the joint pipe is rotatable, the trip head is established the free end of trip arm, the trip head is in the trip arm is suitable for when pressing down the position to installation in the draw-in groove and be in the joint is in when the trip arm is in the bounce position in the draw-in groove, be formed with between the free end of trip arm and the pivot end and press the splenium.

In some embodiments of the invention, the outer joint part further comprises: the second elastic piece is stopped against the position between the pressing portion and the joint pipe so as to push the pressing portion to reset.

Furthermore, the second elastic piece is a spiral spring, the pressing portion is provided with an installation protrusion, the outer side surface of the joint pipe is provided with an abutting groove, one end of the spiral spring is sleeved on the installation protrusion, and the other end of the spiral spring abuts against the inside of the abutting groove.

According to some embodiments of the invention, the outer joint part further comprises: the joint pipe stretches into in the shell, be equipped with on the shell and be used for making press the handle hole that the splenium exposes, the both sides of joint pipe are equipped with the spacing groove, be equipped with on the both sides wall face of shell and peg graft and be in spacing arch of spacing inslot, the trip includes a plurality ofly, and is a plurality of the trip is followed the circumference of joint pipe distributes, every press the pivot end of splenium with the shell passes through the cooperation realization of shaft hole and axostylus axostyle and is connected.

Further, the outer joint part includes: one end of the inner sleeve extends into one end, far away from the branch joint part, of the shell, an outer annular groove is formed in the peripheral surface of the inner sleeve, and an inner annular protrusion suitable for being inserted into the outer annular groove is formed in the inner peripheral wall of the shell; the outer sleeve is sleeved outside the inner sleeve, an outer bent folded edge is arranged at one end of the outer sleeve, an inner folded edge is arranged at the end part of the outer shell, the outer bent folded edge is stopped between the inner folded edge and the inner annular bulge, and the outer cleaning part is suitable for extending into the inner sleeve and is connected with the joint pipe.

In some embodiments of the present invention, the cleaning system for a range hood further comprises: and the pressure switch assembly is connected with the control valve and controls the control valve to be in the inner conduction position when detecting that the pressure between the control valve and the medium outlet reaches a second preset pressure.

The cleaning system for a range hood according to some embodiments of the present invention further comprises: one end of the pressure relief branch is communicated with the medium outlet, and the other end of the pressure relief branch is connected between the control valve and an inner cleaning part of the inner cleaning branch for discharging cleaning medium; and the first pressure relief valve is arranged on the pressure relief branch, is in a normally closed state and is opened to conduct the pressure relief branch when the pressure between the medium outlet and the control valve reaches a third preset pressure.

According to some embodiments of the invention, the cleaning medium supply assembly comprises: a liquid storage device; the steam generator is communicated with the liquid storage device to receive liquid of the liquid storage device, a heating element used for heating the liquid to form steam is arranged in the steam generator, and a steam outlet of the steam generator is the medium outlet; the driving device is arranged between the liquid storage device and the steam generator so as to drive the liquid in the liquid storage device to flow into the steam generator.

Further, the cleaning medium supply unit further includes: and the second pressure relief valve is arranged between the steam generator and the liquid storage device, is in a normally closed state, and is opened when the pressure of the cleaning medium supply assembly reaches a fourth preset pressure so as to release the pressure of the cleaning medium supply assembly.

The range hood provided by the embodiment of the invention comprises the cleaning system for the range hood provided by the embodiment of the invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a cleaning system according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of a cleaning system according to another embodiment of the present invention;

FIG. 3 is a schematic diagram of a cleaning system according to yet another embodiment of the present invention;

FIG. 4 is a schematic view of the connection of the outboard and branch fitting portions of the cleaning system in accordance with one embodiment of the present invention;

FIG. 5 is an enlarged schematic view of FIG. 4 at circle C;

FIG. 6 is a schematic illustration of a connection of a bypass junction and a cartridge assembly of a cleaning system according to an embodiment of the invention;

FIG. 7 is a schematic diagram of the configuration of the outer joint part of the cleaning system according to the embodiment of the present invention;

FIG. 8 is a schematic view showing a coupling structure of a housing and a joint pipe of the washing system according to the embodiment of the present invention;

FIG. 9 is a schematic diagram of a control valve of a cleaning system according to an embodiment of the present invention;

fig. 10 is a schematic view of a coupling structure of an exterior joint part and a branch joint part of a cleaning system according to another embodiment of the present invention.

Reference numerals:

a cleaning system 100;

a cleaning medium supply unit 10; a medium outlet 101; a liquid storage device 11; a steam generator 12; a drive device 13; a second pressure relief valve 14;

an internal cleaning branch 20; a pressure valve 21; an inner cleaning part 22; an inner member to be cleaned 23; a collection device 24;

an external cleaning branch 30;

an external wash assembly 31; an outer cleaning portion 311; an outer joint portion 312; a joint pipe 313; stop grooves 3131; a stopper groove 3132; a hook 314; a hook head 3141; a hook arm 3142; a pressing portion 3143; a mounting protrusion 3144; shaft 3145; a second elastic member 315; a housing 316; an operation hole 3161; a limit protrusion 3162; a shaft hole 3163; an inner annular protrusion 3164; an inner flange 3165; an inner sleeve 317; an outer annular groove 3171; an outer sleeve 318; an outer bent edge 3181; a threaded fastener 319;

a branch junction head 32; a card slot 321; a branch external connection pipe 322; a branch inner junction pipe 323; a seal ring 324;

a microswitch 33; a contact 331;

a valve core assembly 34; a valve core 341; a first elastic member 342; a sealing portion 343;

a control valve 40;

a pressure switch assembly 50;

a pressure relief branch 60; first relief valve 61.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below are exemplary embodiments for explaining the present invention with reference to the drawings and should not be construed as limiting the present invention, and those skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the principle and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

A cleaning system 100 for a range hood according to an embodiment of the present invention will be described with reference to fig. 1 to 10.

Referring to fig. 1 to 10, a cleaning system 100 for a range hood according to an embodiment of the present invention may include: a cleaning medium supply assembly 10, an inner cleaning branch 20 and an outer cleaning branch 30.

Specifically, the cleaning medium supply unit 10 may supply the cleaning medium, and the cleaning medium supply unit 10 has a medium outlet 101 through which the cleaning medium may be output. Both the inlet of the inner wash branch 20 and the inlet of the outer wash branch 30 may communicate with the medium outlet 101.

Therefore, different from the related art, the range hood only has an internal cleaning function, the cleaning system 100 according to the embodiment of the present invention can be formed as an extension type cleaning system, the cleaning medium provided by the cleaning medium supply assembly 10 can be used for cleaning the inside of the range hood through the internal cleaning branch 20, so as to reduce the wind resistance of the range hood and improve the performance of the range hood, and can also be used for cleaning the outside of the range hood through the external cleaning branch 30, so as to achieve the effects of decontamination and sterilization, ensure the tidiness of the kitchen and improve the cooking experience of the user. The cleaning system 100 can thoroughly clean dirt such as oil stain and dust absorbed inside and outside the range hood, and a user does not need to additionally purchase cleaning equipment or manual cleaning for cleaning the outside, and can utilize the cleaning medium supply assembly 10 inside the range hood to guide the generated cleaning medium out to the outside for cleaning, so that economic waste is avoided, and labor is saved.

Here, "inside" may be understood as a portion that needs to be cleaned in a casing of the range hood, for example, an impeller, a volute, a flow passage, etc. of the range hood; the "outside" may be understood as a portion outside the casing of the range hood, which needs to be cleaned, for example, an outer surface of the casing of the range hood or a cooking bench.

In addition, in the present invention, the external cleaning branch 30 may be provided with an external cleaning assembly 31, and the external cleaning assembly 31 may be detachable. When outside washing subassembly 31 adorns, inside washing branch road 20 can break off, and outside washing branch road 30 can switch on, at this moment, can wash the outside of range hood. When cleaning assembly 31 in the outside and tearing down, outside washs branch 30 and can break off, and inside washing branch 20 can switch on, at this moment, can wash the inside of range hood. That is to say, when needs wash the outside of range hood, can pack into outside cleaning assembly 31, when need not wash the outside of range hood, can pull down outside cleaning assembly 31 and deposit in addition, can reduce range hood's occupation space, range hood's outward appearance is neater pleasing to the eye more, avoids hindering range hood's normal use, also can prevent outside cleaning assembly 31 from damaging.

It should be noted that the on and off switching of the internal cleaning branch 20 can be realized in various ways.

For example, in some embodiments of the present invention, the inner cleaning branch 20 may be switched to an off state when the outer cleaning assembly 31 is installed, and the inner cleaning branch 20 may be switched to an on state when the outer cleaning assembly 31 is removed.

For another example, in other embodiments of the present invention, the internal cleaning branch 20 may be switched according to the level of the pressure value, when the pressure of the internal cleaning branch 20 reaches a predetermined value, the internal cleaning branch 20 may be turned on, otherwise, the internal cleaning branch 20 is turned off.

Of course, the internal cleaning branch 20 may be switched in state by the cooperation of the dismounting action of the external cleaning component 31 and the pressure of the internal cleaning branch 20, in other words, the internal cleaning branch 20 may be switched in state by the trigger of at least one of the dismounting action of the external cleaning component 31 and the pressure of the internal cleaning branch 20.

The cleaning system 100 for the range hood, provided by the embodiment of the invention, is provided with the internal cleaning system 20 and the external cleaning system 30, the inside and the outside of the range hood can be cleaned, the use is more economical and labor-saving, the appearance is cleaner and more attractive, the state switching of the internal cleaning system 20 can be realized in various ways, the operation is simpler and more convenient, and more use requirements can be met.

In the embodiment that the disassembly and assembly action of the external cleaning assembly 31 can trigger the state switching of the internal cleaning branch 20, as shown in fig. 1 and 3, when the external cleaning assembly 31 is assembled, the external cleaning branch 30 can be immediately conducted, when the external cleaning assembly 31 is disassembled, the external cleaning branch 30 can be immediately disconnected, the conduction and disconnection of the external cleaning branch 30 are controlled sensitively, and the occurrence of cleaning medium leakage and injury accidents when the external cleaning assembly 31 is disassembled can be effectively prevented, so that the external cleaning assembly is safer.

When the external cleaning unit 31 is attached and detached, the state switching of the internal cleaning branch 20 may occur immediately or may be delayed. For example, in the embodiment shown in fig. 1, the switching of the state of the internal cleaning branch 20 is triggered only by the dismounting action of the external cleaning assembly 31, when the external cleaning assembly 31 is mounted, the internal cleaning branch 20 can be immediately disconnected, and when the external cleaning assembly 31 is dismounted, the internal cleaning branch 20 can be immediately conducted.

For another example, in the embodiment shown in fig. 3, the state switching of the internal cleaning branch 20 is triggered by the assembling and disassembling action of the external cleaning component 31 and the press-fitting action of the internal cleaning branch 20. When the external wash module 31 is disassembled, the pressure of the internal wash branch 20 may be gradually changed to achieve a delayed switching of the state of the internal wash branch 20, or the pressure of the internal wash branch 20 may be instantaneously changed to achieve an immediate switching of the internal wash branch 20.

In addition, as shown in fig. 2, in the embodiment in which the pressure of the internal cleaning branch 20 controls the state switching of the internal cleaning branch 20, the internal cleaning branch 20 may be provided with a pressure valve 21. The pressure valve 21 is opened to allow the internal cleaning branch 20 to be opened when the pressure of the internal cleaning branch 20 reaches a first predetermined pressure, and the pressure valve 21 is closed to allow the internal cleaning branch 20 to be opened when the pressure of the internal cleaning branch 20 is lower than the first predetermined pressure. The switching of the on and off states of the inner wash branch 20 is more sensitive.

Further, the pressure valve 21 can be a one-way valve, so that the structure is simpler, the installation is easy, the cleaning medium can be prevented from flowing back, and the cleaning device is safer and more reliable.

According to further embodiments of the present invention, as shown in fig. 1, 4-8, the external wash branch 30 may have a branch joint part 32, and the external wash assembly 31 may include: an outer cleaning portion 311 and an outer joint portion 312.

Wherein, outer cleaning portion 311 can be used for going out the cleaning medium, and the user can control outer cleaning portion 311 and wash the outside of range hood, and convenient operation is laborsaving. In some examples of the present invention, the outer cleaning part 311 may be a spray gun or a shower head, and the outer cleaning part 311 may have a switch assembly, when the switch assembly is turned on, the outer cleaning part 311 is turned on and may spray a cleaning medium, and when the switch assembly is turned off, the outer cleaning part 311 is turned off. The user can be more convenient control the break-make of outer washing portion 311 in the use, and need not frequent dismouting outside and wash subassembly 31 or regulate and control the pressure that inside washd branch road 20 in order to control the break-make state of outside washing branch road 30, and the practicality is stronger.

Further, as shown in fig. 1, 4 and 6, the outer joint head 312 is connected to the outer washing section 311, and the outer joint head 312 may be detachably connected to the branch joint head 32. When the external joint part 312 is connected to the branch joint part 32, as shown in fig. 4, the outlet of the branch joint part 32 may be communicated with the inlet of the external joint part 312, and the cleaning medium may enter the inlet of the external joint part 312 from the outlet of the branch joint part 32, and then enter the external cleaning part 311 through the external joint part 312. When the outer joint part 312 is separated from the branch joint part 32, as shown in fig. 6, the outlet of the branch joint part 32 is closed, and the cleaning medium cannot flow out from the outlet of the branch joint part 32.

In some embodiments of the present invention, as shown in fig. 1, 3 and 9, the inner wash branch 20, the outer wash branch 30 and the wash medium supply assembly 10 may be in two-by-two communication via a two-position three-way control valve 40. In particular, the control valve 40 may comprise three passages, wherein passage P may be in sealed communication with the outlet medium port 101 of the cleaning medium supply assembly 10, passage a may be in sealed communication with the inner cleaning branch 20, and passage B may be in sealed communication with the outer cleaning branch 30. And the control valve 40 may include an inner conducting position and an outer conducting position, when the external cleaning assembly 31 is installed, the control valve 40 may be in the outer conducting position, at this time, the passage P is conducted with the passage B to conduct the external cleaning branch 30, and the cleaning medium supply assembly 10 is communicated with the external cleaning branch 30; when the outer wash assembly 31 is removed, the control valve 40 may be in the inner conducting position, in which the passage P is in communication with the passage a, conducting the inner wash branch 20, and the wash medium supply assembly 10 is in communication with the inner wash branch 20.

Further, as shown in fig. 4-6, the external cleaning branch 30 may be provided with a micro switch 33, the micro switch 33 may be triggered to control the control valve 40 to be in the external conducting position when the external cleaning assembly 31 is installed, and the micro switch 33 may be triggered to control the control valve 40 to be in the internal conducting position when the external cleaning assembly 31 is removed. Therefore, the state switching of the internal cleaning branch 20 can be triggered by the dismounting of the external cleaning component 31, the switching of the communication of the cleaning medium supply component 10 and the internal cleaning branch 20 or the communication of the cleaning medium supply component 10 and the external cleaning branch 30 can be realized only by one-step operation of dismounting and mounting the external cleaning component 31, and the operation is simpler and more convenient.

With continued reference to fig. 4-6, in embodiments having a branch junction 32, an outer cleaning portion 311, and an outer junction 312, the micro-switch 33 may be provided on the branch junction 32. When the outer joint part 312 is connected with the branch joint part 32, the outer joint part 312 can stop against the contact 331 of the micro switch 33 to trigger the micro switch 33 to enable the control valve 40 to be in the outer conducting position, when the outer joint part 312 is separated from the branch joint part 32, the outer joint part 312 can release the contact 331 of the micro switch 33 to trigger the micro switch 33 to enable the control valve 40 to be in the inner conducting position, and the position of the micro switch 33 is reasonably set.

In addition, the micro switch 33 may be detachably connected to the branch joint portion 32, that is, in the embodiment in which the micro switch 33 is required to control the on state of the internal cleaning branch 20, as shown in fig. 4, the micro switch 33 may be incorporated, and in the embodiment in which the micro switch 33 is not required to control the on state of the internal cleaning branch 20, as shown in fig. 10, the micro switch 33 may be removed.

According to some embodiments of the present invention, as shown in fig. 4-5, the outlet of the branch junction portion 32 may be provided with a valve cartridge assembly 34, and the valve cartridge assembly 34 may be movable between an open position and a closed position. During connection of the outer joint portion 312 to the branch joint portion 32, the outer joint portion 312 may abut against the valve core assembly 34, so that the valve core assembly 34 moves to an open position that opens the outlet of the branch joint portion 32, and when the outer joint portion 312 is connected to the branch joint portion 32, as shown in fig. 4 and 5, the outlet of the branch joint portion 32 is fully opened. When the outer joint portion 312 is separated from the branch joint portion 32, the valve core assembly 34 is not stopped by the outer joint portion 312, and the valve core assembly 34 can be reset to the closing position for closing the outlet of the branch joint portion 32.

Further, as shown in fig. 4-6, the valve core assembly 34 may include: a valve core 341 and a first elastic member 342. One end of the valve core 341 may abut against the outer joint portion 312, so that the valve core 34 assembly may move under the abutment of the outer joint portion 312. The other end of the valve element 341 may be provided with a sealing portion 343, and the valve element 341 may be provided with a fluid passage. The seal 343 may be configured to close the outlet of the branch junction 32 and the fluid passage may communicate the outlet of the branch junction 32 with the inlet of the outer junction 312 when the valve cartridge assembly 34 is in the open position.

In addition, the first elastic member 342 may be stopped between the branch joint portion 32 and the valve element 341. As shown in fig. 5, the valve element 341 moves to the open position by the stop action of the outer joint portion 312, the first elastic element 342 is in a compressed state, and the fluid passage communicates the outlet of the branch joint portion 32 with the inlet of the outer joint portion 312. As shown in fig. 6, when the outer joint part 312 is detached, the valve element 341 loses the stopping action, the first elastic element 342 is restored to the original state, and the valve element 341 can automatically return to the closed position under the stopping action of the first elastic element 342, so as to prevent the cleaning medium from leaking from the outlet of the branch joint part 32 to cause an injury accident, and thus, the cleaning device is safer and more reliable.

Further, in the specific embodiment shown in fig. 5, the valve element 341 may be formed substantially as a cylinder extending in the flow direction of the cleaning medium, the sealing portion 343 may be formed substantially as a circle extending in a plane perpendicular to the flow direction of the cleaning medium, and at least a portion of one end of the valve element 341 adjacent to the outer joint portion 312 is formed with a fluid passage.

In addition, at least a portion of one end of the valve body 341 adjacent to the outer joint portion 312 is formed by a plurality of plate bodies extending outward in the radial direction of the valve body 341 from the axis of the valve body 341, and one ends of the plurality of plate bodies remote from the axis of the valve body 341 are provided at intervals in the circumferential direction of the valve body 341, and a fluid passage is defined between the adjacent two plate bodies. This ensures that the cleaning medium can enter the outer joint part 312 from the branch joint part 32 via the fluid channel when the valve element 341 comes into abutment with the outer joint part 312. It should be noted that the valve body 341 shown in fig. 5 is a sectional view, and a sectional line passes through the plate body, and therefore, the fluid passage structure is not shown in fig. 5.

Still further, the first elastic element 342 may be a coil spring sleeved on the valve element 341, and has a simple structure, can be recycled, and is not easy to age and deform. The sealing part 343 can be a sealing ring sleeved on the valve core 341, the sealing effect of the sealing ring is better, and when the outer joint part 342 is detached, the outlet of the branch joint part 32 can be effectively sealed, so that the cleaning medium is prevented from leaking, and the cleaning device is safer.

According to a further embodiment of the present invention, as shown in fig. 5 and 6, the branch joint part 32 may include a branch outside pipe 322, a branch inside pipe 323, and a sealing ring 324, the branch outside pipe 322 and the branch inside pipe 323 may be screw-coupled, and a space between the branch outside pipe 322 and the branch inside pipe 323 may be sealed by the sealing ring 324 to prevent the cleaning medium from leaking. The valve core 341 of the valve core assembly 34 may be inserted into the branch inner pipe 323, and when the valve core assembly 34 is located at the closed position, the sealing portion 343 of the valve core assembly 34 may be stopped against one end of the branch inner pipe 323 to close the outlet of the branch joint portion 32. When the valve core assembly is assembled, the valve core assembly 34 and the branch inner connecting pipe 323 can be assembled at first, and then the branch inner connecting pipe 323 and the branch outer connecting pipe 322 are assembled, so that the valve core assembly 34 is more convenient to install, and the structural design is more reasonable.

Further, the sealing ring 324 can be a silica gel ring, so that the sealing effect is better, the sealing ring is more wear-resistant and is easy to process.

In some embodiments of the present invention, as shown in fig. 4-7, the branch connector portion 32 may have a slot 321, and the outer connector portion 312 may include: the inlet of the joint pipe 313 can be communicated with the outlet of the outer joint part 312, the hook 314 can be connected with the joint pipe 313, and the hook 314 can be clamped in the clamping groove 321 to clamp the outer joint part 312 and the branch joint part 32, so that the connection structure is simple and firm.

In addition, as shown in fig. 5, in the embodiment with the micro switch 33, the contact 331 of the micro switch 33 may extend into the slot 321, and therefore, when the hook 314 is hooked in the slot 321, the hook 314 may stop the contact 331 to trigger the micro switch 33, so as to realize triggering of the micro switch 33 by detaching and installing the outer joint portion 312, and the structural design is more reasonable.

Further, as shown in fig. 7, the hook 314 may include: a hook head 3141 and a hook arm 3142. The hook head 3141 can be engaged with the engaging groove 321, and in the embodiment with the micro switch 33, the hook head 3141 can stop against the contact 331 of the micro switch 33. One end of the hook arm 3142 is a free end, the other end of the hook arm 3142 is a pivot end, and a pressing portion 3143 may be formed between the free end and the pivot end. The free end may be rotatable relative to the pivot end such that the hook arm 3142 may be rotated relative to the connector tube 313 between a depressed position and a sprung position, and the hook head 3141 may be disposed at the free end of the hook arm 3142.

Therefore, when the external joint part 312 needs to be clamped into the branch joint part 32, the pressing part 3143 can be pressed to move the hook arm 3142 to the pressing position, at this time, the hook head 3141 moves inwards, namely, moves in the direction away from the clamping groove 321, and at this time, the hook head 3141 can be installed in the clamping groove 321. After the hook head 3141 moves to a position corresponding to the slot 321, the pressing portion 3143 stops being pressed, the hook head 3141 moves outward, that is, moves in the direction of inserting into the slot 321, the hook arm 3142 moves to the bouncing position, the hook head 3141 is clamped in the slot 321, and the installation of the external joint portion 312 and the branch joint portion 32 is completed.

Further, as shown in fig. 4 and 7, the outer joint 312 may further include a second elastic member 315, and the second elastic member 315 may be abutted between the pressing portion 3143 and the joint tube 313. When the hook arm 3142 is located at the pressing position, the second elastic member 315 is in a compressed state, and when the pressing portion 3143 stops being pressed, the second elastic member 315 is restored, and meanwhile, the second elastic member 315 can stop abutting against the pressing portion 3143 and push the pressing portion 3143 to automatically reset, so that the hook head 3141 is clamped into the slot 321. The clamping connection between the outer joint part 312 and the branch joint part 32 can be completed only by pressing or stopping pressing the pressing part 3143, and the operation process is simple.

In some embodiments of the present invention, the second elastic member 315 may be a coil spring, which has a simple structure and can be recycled, and is not prone to aging and deformation.

As shown in fig. 7, the pressing portion 3143 may be provided with a mounting protrusion 3144, and the outer side surface of the joint pipe 313 may be provided with a stopper groove 3131. The mounting protrusion 3144 protrudes from the inner surface of the pressing portion 3143 toward the direction of the joint pipe 313, one end of the coil spring can be sleeved on the mounting protrusion 3144, the other end of the coil spring can be stopped in the stopping groove 3131, and the mounting protrusion 3144 and the stopping groove 3131 can limit the position of the coil spring relative to the pressing portion 3143 and the joint pipe 313, so as to prevent the position of the coil spring from being shifted and the pressing portion 3143 from being pushed to return.

According to some embodiments of the present invention, as shown in fig. 7 and 8, the outer joint part 312 may further include a housing 316, the joint tube 313 may extend into the housing 316, the housing 316 may protect the joint tube 313 to prevent the joint tube 313 from being damaged accidentally, and the outer joint part 312 may have a neat and beautiful appearance.

In addition, the housing 316 may be provided with an operation hole 3161, and the pressing portion 3143 may be exposed from the operation hole 3161, so that the user may press or stop pressing the pressing portion 3143 from the outside of the housing 316, which is more convenient to operate. The joint pipe 313 may be provided at both sides thereof with a stopper groove 3132, and both side wall surfaces of the housing 316 may be provided with stopper protrusions 3162, and the stopper protrusions 3162 may be inserted into the stopper groove 3132, thereby achieving connection of the joint pipe 313 and the housing 316.

It should be noted that the shape of the limiting groove 3132 and the limiting protrusion 3162 is not particularly limited, and only the requirement that the limiting groove 3132 and the limiting protrusion 3162 cooperate to connect the joint pipe 313 and the housing 316 is satisfied. For example, in some embodiments of the invention, the limiting groove 3132 may be a square hole groove, and the limiting protrusion 3162 may be a square protrusion, which may be inserted into the square hole groove to connect the joint pipe 313 and the housing 316.

In the present invention, the hook 314 may include a plurality of hooks 314, the plurality of hooks 314 may be distributed along the circumferential direction of the joint pipe 313, the pivot end of each pressing portion 3143 may have a shaft 3145, the housing 316 may have a shaft hole 3163 corresponding to the position of the shaft 3145, the shaft 3145 may be inserted into the shaft hole 3163 to connect the hook 314 and the joint pipe 313, and the shaft 3145 rotates in the shaft hole 3163 so that the free end may rotate relative to the pivot end.

For example, in the embodiment shown in fig. 7, two hooks 314 are included, two hooks 314 are respectively disposed on two sides of the joint pipe 313, the user can operate the two hooks by the pressing portions 3143 on two sides, the operation is more convenient, and the hooks 314 are clamped by two sides, which can ensure that the clamping is firm.

Of course, in the present invention, the number of the hooks 314 is not limited to two, the number of the hooks 314 can be flexibly set according to the actual requirement, and only the requirement that the hooks 314 are clamped in the slots 321 to connect the outer joint portion 312 and the branch joint portion 32 needs to be satisfied. For example, in other embodiments of the present invention, the number of the hooks 314 may also be three, four or more. It should be noted that, in the embodiment where the hooks 314 are multiple, the number of the second elastic members 315, the mounting protrusions 3144, and the stop grooves 3131 may be the same as that of the hooks 314 and may be arranged in a one-to-one correspondence manner.

According to a further embodiment of the present invention, as shown in fig. 7, the outer joint part 312 may include: an inner sleeve 317 and an outer sleeve 318.

One end of the inner sleeve 317 may extend into an end of the housing 316 distal from the branch junction 32 and the outer cleaning portion 311 may extend into the inner sleeve 317 to connect with the outer junction 312, e.g., the outer cleaning portion 311 may connect with an end of the junction tube 313 distal from the branch junction 32. Therefore, the inner sleeve 317 can protect the joint between the outer cleaning part 311 and the joint pipe 313 and prevent the cleaning medium from leaking or damaging due to loosening.

The outer sleeve 318 can be sleeved outside the inner sleeve 317, the inner sleeve 317 and the outer sleeve 318 can form a shaft hole matching, on one hand, the connection part of the outer cleaning part 311 and the joint pipe 313 can be further protected, on the other hand, the outer sleeve 318 can be formed into a decorative pipe, and the appearance of the outer joint part 312 is more attractive.

In addition, the connection and fixation structure of the inner sleeve 317 and the outer sleeve 318 is not limited in particular in the present invention, for example, in the specific embodiment shown in fig. 7, an outer annular groove 3171 may be provided on the outer peripheral surface of the inner sleeve 317, an inner annular protrusion 3164 may be provided on the inner peripheral wall of the outer shell 316, the inner annular protrusion 3164 may be inserted into the outer annular groove 3171, and the inner annular protrusion 3164 and the outer annular groove 3171 cooperate to fix the positions of the inner sleeve 317 and the outer shell 316 relatively.

One end of the outer sleeve 318 may be provided with an outer bent flange 3181, the end of the outer shell 316 may be provided with an inner bent flange 3165, and the outer bent flange 3181 may be stopped between the inner bent flange 3165 and the inner annular protrusion 3164, so that the positions of the outer sleeve 318 and the outer shell 316 are relatively fixed. The inner sleeve 317 and the outer sleeve 318 are fixed relative to the radial and axial positions of the outer shell 316 respectively, the fixed structure is simple and firm, but the inner sleeve 317 and the outer sleeve 318 can freely rotate relative to the circumferential direction of the outer shell 316 respectively, and the use process is more convenient.

Further, the outer shell 316 may include a first shell and a second shell, the first shell and the second shell may be connected by a snap connection or may be fixedly connected by a threaded fastener 319 to form the outer shell 316, and the joint pipe 313, the snap 314, the inner sleeve 317 and the outer sleeve 318 may be located in an installation space defined between the first shell and the second shell. In the assembling process, the inner sleeve 317 and the outer sleeve 318 can be assembled firstly, then the joint tube 313, the snap 314, the inner sleeve 317 and the outer sleeve 318 are installed in the first shell, and finally the second shell is connected with the first shell and fixed through the snap structure or the threaded fastener 319, so that the assembling of the outer joint part 312 is simpler and the operation is easy.

In addition, can be equipped with constant head tank and location arch on the face relative to each other of first casing and second casing respectively, the constant head tank can tentatively fix a position first casing and second casing with protruding cooperation in location, then the rethread joint structure or threaded fastener 319 isotructure are fixed, make the assembling process simpler.

The cleaning system 100 according to some embodiments of the present invention may further include a pressure switch assembly 50, as shown in fig. 1, the pressure switch assembly 50 may be connected to the control valve 40, the pressure switch assembly 50 may detect a pressure between the control valve 40 and the medium outlet 101, and when the pressure switch assembly 50 detects that the pressure between the control valve 40 and the medium outlet 101 reaches a second predetermined pressure, the pressure switch assembly 50 may control the control valve 40 to be in the inner conducting position, that is, the inner cleaning branch 20 to be conducting and the outer cleaning branch 30 to be disconnected.

Therefore, when the external cleaning assembly 31 is installed, if the external cleaning branch 30 is controlled by other devices or is blocked, so that the cleaning medium cannot be discharged from the external cleaning branch 30 for a long time, the pressure switch assembly 50 can turn on the internal cleaning branch 20, so as to reduce the pressure in the cleaning system 100, and prevent the occurrence of an injury accident caused by the excessive pressure in the cleaning system 100.

In some embodiments of the present invention, as shown in fig. 3, the washing system 100 may further include: a pressure relief branch 60 and a first pressure relief valve 61. Specifically, one end of the pressure relief branch 60 may be in communication with the medium outlet 101, and the other end of the pressure relief branch 60 may be connected between the control valve 40 and the inner cleaning portion 22 of the inner cleaning branch 20 for discharging the cleaning medium, where the inner cleaning portion 22 may be a nozzle or a spray head. The first relief valve 61 may be provided on the pressure relief branch 60, the first relief valve 61 may be in a normally closed state, and the first relief valve 61 may be opened to conduct the pressure relief branch 60 when the pressure between the medium outlet 101 and the control valve 40 reaches a third predetermined pressure.

Therefore, when the external cleaning module 31 is installed, if the external cleaning branch 30 is controlled by another device or is blocked so that the cleaning medium cannot be discharged from the external cleaning branch 30 for a long time, the first pressure relief valve 61 of the pressure relief branch 60 can control the cleaning medium to be discharged from the internal cleaning part 22, so that the pressure in the cleaning system 100 is reduced, and the occurrence of an injury accident due to an excessive pressure in the cleaning system 100 is prevented.

Further, first relief valve 61 can be the check valve, simple structure, easily installation to can prevent the cleaning medium backward flow, safe and reliable more.

It should be noted that, in the present invention, the pressure values of the first predetermined pressure, the second predetermined pressure and the third predetermined pressure may be flexibly set according to the actual requirement, and the pressure values of the first predetermined pressure, the second predetermined pressure and the third predetermined pressure may be the same or different, which is within the protection scope of the present invention.

According to some embodiments of the present invention, as shown in fig. 1-3, the cleaning medium supply assembly 10 may include: a liquid storage device 11, a steam generator 12 and a driving device 13. Wherein, the steam generator 12 can be communicated with the liquid storage device 11, and the driving device 13 can be arranged between the liquid storage device 11 and the steam generator 12. The liquid that drive arrangement 13 can drive in the stock solution device 11 flows into in steam generator 12 to can be equipped with the heating member in the steam generator 12, the heating member can form steam with liquid heating, and the play steam outlet of steam generator 12 is play medium mouth 101, and steam can be washed the inside or the outside of range hood as the cleaning medium by play medium mouth 101 outflow.

In the present invention, the liquid storage device 11 may be a water cup, the driving device 13 may be a water pump, the water cup may store liquid such as clean water or detergent at normal temperature, and the liquid may enter the steam generator 12 to be heated into a cleaning medium in a steam state and flow out from the medium outlet 101 under the driving of the water pump.

Further, as shown in fig. 1 to 3, the cleaning medium supplying assembly 10 may further include a second pressure relief valve 14, and the setting position of the second pressure relief valve 14 is not particularly limited, for example, the second pressure relief valve 14 may be provided between the steam generator 12 and the liquid storage device 11, or may be provided between the steam generator 12 and the driving device 13. The second pressure relief valve 14 is in a normally closed state, and when the pressure of the cleaning medium supply assembly 10 reaches a fourth predetermined pressure, the second pressure relief valve 14 may be opened to reduce the pressure of the cleaning medium supply assembly 10, so as to prevent an injury accident caused by an excessive pressure of the cleaning medium supply assembly 10.

It should be noted that the value of the fourth predetermined pressure can be flexibly set according to actual requirements. For example, in the example including the pressure valve 21 as shown in fig. 2, the pressure value of the fourth predetermined pressure may be greater than the pressure value of the first predetermined pressure, whereby, without malfunction, the pressure valve 21 may be opened prior to the second relief valve 14 to reduce the pressure within the washing system 100, avoiding waste of the washing medium.

For another example, in the example including the pressure switch assembly 50 as shown in fig. 1, the pressure value of the fourth predetermined pressure may be equal to the pressure value of the second predetermined pressure, so that when the pressure between the control valve 40 and the medium outlet 101 reaches the second predetermined pressure, the second relief valve 14 opens to relieve the pressure, and the pressure switch assembly 50 controls the control valve 40 to be in the inner conducting position. Of course, the pressure value of the fourth predetermined pressure may be greater than the pressure value of the second predetermined pressure, so that the pressure switch assembly 50 operates before the second relief valve 14 without failure, thereby avoiding waste of the cleaning medium.

For another example, in the example including the pressure relief branch 60 and the first pressure relief valve 61 as shown in fig. 3, the pressure value of the fourth predetermined pressure may be greater than the pressure value of the third predetermined pressure, and thus, without failure, the first pressure relief valve 61 may be opened prior to the second pressure relief valve 14 to reduce the pressure in the cleaning system 100, avoiding waste of the cleaning medium.

In some embodiments of the present invention, the cleaning system 100 may further include a collection device 24, and the collection device 24 may be disposed below the internal member 23 to be cleaned. When the cleaning system 100 cleans the interior of the range hood, the cleaning medium is sprayed out from the inner cleaning part 22, one part of the cleaning medium enters the atmosphere, the other part of the cleaning medium is sprayed out to the surface of the piece 23 to be cleaned and cleans dirt such as oil stains on the surface of the piece 23 to be cleaned, the cleaning medium condenses on the surface of the piece 23 to be cleaned, and the cleaned dirt and condensate flow into the collecting device 24.

Alternatively, in the present invention, the collecting device 24 may be an oil cup for collecting the condensate, and the collecting device 24 may also be a separating filter for separating dirt in the condensate, and the separated clean condensate of the cleaning medium may enter the cleaning medium supply assembly 10 again for recycling, which is beneficial to saving resources.

The washing system 100 according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings, it being understood that the following description is illustrative only and should not be construed as limiting the invention.

The first embodiment is as follows:

as shown in fig. 1, 4-9, the cleaning system 100 includes a liquid storage device 11, a steam generator 12, a driving device 13, a second pressure relief valve 14, an internal cleaning branch 20, an internal cleaning portion 22, a collecting device 24, an external cleaning branch 30, an external cleaning portion 311, an external joint portion 312, a branch joint portion 32, a micro switch 33, a valve core assembly 34, a control valve 40, and a pressure switch assembly 50.

When the external cleaning component 31 is not installed in the branch joint part 32, the control valve 40 is located at an internal conducting position, the internal cleaning branch 20 is conducted, the external cleaning branch 30 is closed, the driving device 13 drives the liquid in the liquid storage device 11 to enter the steam generator 12 and form a cleaning medium in a steam state under the heating of the heating element of the steam generator 12, the cleaning medium flows out from the medium outlet 101 and enters the internal cleaning branch 20, and the cleaning medium is sprayed out through the internal cleaning part 22, so that the inside of the oil suction press can be cleaned. A part of the sprayed cleaning medium enters the atmosphere, a part of the cleaning medium is condensed on the surface of the member to be cleaned 23 inside the member to be cleaned and flows into the collecting device 24, and dirt such as oil stains and the like which are cleaned enter the collecting device 24 along with condensate.

When the outside of the range hood needs to be cleaned, the outside cleaning assembly 31 and the branch joint part 32 are assembled at first. Specifically, the pressing portion 3143 of the outer joint portion 312 of the external cleaning assembly 31 is manually pressed to compress the second elastic member 315, the hook 3141 moves in a direction away from the slot 321, so as to control the insertion of the outer joint portion 312 into the branch joint portion 32, the joint pipe 313 abuts against the valve plug 341, the first elastic member 342 is compressed by overcoming the elastic force, the valve plug assembly 34 moves to the open position, the fluid channel conducts the outlet of the branch joint portion 32 and the inlet of the outer joint portion 312, and at this time, the hook 3141 moves to a position corresponding to the slot 321. The pressing part 3143 stops being pressed, the hook head 3141 is reset under the elastic action of the second elastic piece 315 and is clamped into the clamping groove 321, the outer joint part 312 and the branch joint part 32 are clamped to form a one-way valve assembly, the connection between the external cleaning assembly 31 and the branch joint part 32 is realized, and the external cleaning assembly 31 is communicated with the branch joint part 32.

The hook head 3141 is clamped into the clamping groove 321 and simultaneously abuts against a contact 331 of the micro switch 33 to trigger the micro switch 33, the micro switch 33 controls the control valve 40 to be in an external conduction position, the external cleaning branch 30 is conducted, the internal cleaning branch 20 is closed, cleaning media sequentially pass through the control valve 40, the branch joint part 32 and the external joint part 312 to enter the external cleaning part 311 of the external cleaning assembly 31, the switch assembly of the external cleaning part 311 is pressed to enable the external cleaning part 311 to be opened, the cleaning media can be sprayed out from the external cleaning part 311, and the outside of the range hood is cleaned.

When the external cleaning part 311 is in a non-working state for a long time, the pressure of the cleaning medium supply assembly 10 and the pressure between the medium outlet 101 and the control valve 40 are increased, when the pressure reaches a second predetermined pressure, the second pressure release valve 14 releases the pressure, meanwhile, the pressure switch assembly 50 controls the control valve 40 to be located at an inner conducting position, the internal cleaning branch 20 is conducted, the external cleaning branch 30 is disconnected, so that the cleaning medium enters the internal cleaning branch 20 to clean the internal part 23 to be cleaned, and the pressure in the cleaning system 100 is reduced.

When the external cleaning assembly 31 is detached, the valve core assembly 34 is reset under the elastic force of the second elastic member 315, the sealing portion 343 is attached to the end of the branch inner connecting pipe 323 again, and the outlet of the branch joint portion 32 is automatically closed, thereby preventing the occurrence of cleaning medium leakage and injury accidents. The hook head 3141 triggers the micro switch 33, the micro switch 33 controls the control valve 40 to be powered off and located at an inner conducting position, the inner cleaning branch 20 is conducted, and the outer cleaning branch 30 is closed.

Example two:

as shown in fig. 2, 9 and 10, the cleaning system 100 includes a liquid storage device 11, a steam generator 12, a driving device 13, a second pressure relief valve 14, an internal cleaning branch 20, a pressure valve 21, an internal cleaning portion 22, a collecting device 24, an external cleaning branch 30, an external cleaning portion 311, an external joint portion 312, a branch joint portion 32 and a valve core assembly 34.

When the external cleaning component 31 is not installed in the branch joint part 32, the internal cleaning branch 20 and the external cleaning branch 30 are both closed, the driving device 13 drives the liquid in the liquid storage device 11 to enter the steam generator 12 and form a cleaning medium in a steam state under the heating of the heating element of the steam generator 12, so that the pressure in the internal cleaning branch 20 and the external cleaning branch 30 is increased, when the pressure reaches a first preset pressure, the pressure valve 21 is opened, the internal cleaning branch 20 is conducted, the external cleaning branch 30 is closed, the cleaning medium flows out from the medium outlet 101 and enters the internal cleaning branch 20, and the cleaning medium is sprayed out through the internal cleaning part 22, so that the inside of the oil suction press can be cleaned. A part of the sprayed cleaning medium enters the atmosphere, a part of the cleaning medium is condensed on the surface of the member to be cleaned 23 inside the member to be cleaned and flows into the collecting device 24, and dirt such as oil stains and the like which are cleaned enter the collecting device 24 along with condensate.

When the outside of the range hood needs to be cleaned, the outside cleaning assembly 31 and the branch joint part 32 are firstly assembled, and the assembling process is the same as that described in embodiment 1, and is not described in detail herein.

After the external cleaning component 31 is installed in the branch joint part 32, the external cleaning branch 30 is conducted, the switch component of the external cleaning part 311 is opened, the cleaning medium is sprayed out from the external cleaning part 311 for cleaning the outside of the range hood, so that the pressure in the internal cleaning branch 20 is reduced, the pressure value is close to zero and is lower than the second preset pressure, the pressure valve 21 is automatically closed, and the internal cleaning branch 20 is closed.

When the outer cleaning part 311 is in a non-working state for a long time or the outer cleaning assembly 31 is removed, the pressure of the inner cleaning branch 20 will rise, and when the pressure is higher than the second predetermined pressure again, the pressure valve 21 will be opened again, the inner cleaning branch 20 is conducted, and the cleaning medium is sprayed out from the inner cleaning part 22 to clean the inner member 23 to be cleaned. The threshold pressure of the fourth predetermined pressure of the second relief valve 14 is greater than the second predetermined pressure of the pressure valve 21, and therefore the second relief valve 14 does not operate without failure.

Example three:

as shown in fig. 3, 4-9, the cleaning system 100 includes a liquid storage device 11, a steam generator 12, a driving device 13, a second pressure relief valve 14, an internal cleaning branch 20, an internal cleaning portion 22, a collecting device 24, an external cleaning branch 30, an external cleaning portion 311, an external joint portion 312, a branch joint portion 32, a micro switch 33, a valve core assembly 34, a control valve 40, a pressure relief branch 60, and a first pressure relief valve 61.

When the external cleaning component 31 is not installed in the branch joint part 32, the control valve 40 is at the internal conducting position, the internal cleaning branch 20 is conducted, the external cleaning branch 30 is closed, and the pressure relief branch 60 is closed. The driving device 13 drives the liquid in the liquid storage device 11 to enter the steam generator 12 and form a cleaning medium in a steam state under the heating of the heating element of the steam generator 12, the cleaning medium flows out from the medium outlet 101 and enters the internal cleaning branch 20, and the cleaning medium is then sprayed out through the internal cleaning part 22, so that the inside of the oil suction press can be cleaned. A part of the sprayed cleaning medium enters the atmosphere, a part of the cleaning medium is condensed on the surface of the member to be cleaned 23 inside the member to be cleaned and flows into the collecting device 24, and dirt such as oil stains and the like which are cleaned enter the collecting device 24 along with condensate.

When the outside of the range hood needs to be cleaned, the outside cleaning assembly 31 and the branch joint part 32 are firstly assembled, and the assembling process is the same as that described in embodiment 1, and is not described in detail herein.

In the process of assembling the external cleaning component 31 and the branch joint part 32, the hook head 3141 is clamped into the clamping groove 321 and abuts against the contact 331 of the micro switch 33 to trigger the micro switch 33, the micro switch 33 controls the control valve 40 to be in an external conducting position, the external cleaning branch 30 is conducted, the internal cleaning branch 20 is closed, and the pressure relief branch 60 is closed. Cleaning medium enters the outer cleaning part 311 of the outer cleaning assembly 31 through the control valve 40, the branch joint part 32 and the outer joint part 312 in sequence, the switch assembly of the outer cleaning part 311 is pressed to open the outer cleaning part 311, and the cleaning medium can be sprayed out from the outer cleaning part 311 to clean the outside of the range hood.

When the external cleaning part 311 is in a non-working state for a long time or the external cleaning component 31 is detached, the pressure of the pressure relief branch 60 is increased, when the pressure is higher than a third predetermined pressure, the first pressure relief valve 61 is opened, the pressure relief branch 60 is conducted, and the cleaning medium is sprayed out from the internal cleaning part 22 through the pressure relief branch 60 to clean the internal part 23 to be cleaned. The threshold pressure of the fourth predetermined pressure of the second relief valve 14 is greater than the third predetermined pressure of the first relief valve 61, and therefore the second relief valve 14 does not operate without failure.

The range hood according to the embodiment of the invention comprises the cleaning system 100 for the range hood according to the embodiment of the invention. Because the cleaning system 100 for the range hood according to the embodiment of the invention has the beneficial technical effects, the range hood according to the embodiment of the invention can clean the inside and the outside of the range hood, is more economical and labor-saving in use, is more neat and attractive in appearance, is simpler and more convenient to operate, and can meet more use requirements.

Other constructions and operations of the extractor hood and cleaning system 100 according to embodiments of the present invention will be apparent to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically 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.

In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims (9)

1. A joint assembly for a range hood, the range hood comprising an external cleaning branch and an external cleaning assembly detachably disposed on the external cleaning branch through the joint assembly, the external cleaning assembly having an external cleaning portion for discharging a cleaning medium, the joint assembly comprising:

the branch joint part is arranged on the external cleaning branch and is provided with a microswitch;

the outer joint part is connected with the outer cleaning part and detachably connected with the branch joint part, a clamping groove is arranged on the branch joint part, the outer joint part comprises a clamping hook and a joint pipe, the inlet of the joint pipe is suitable for being communicated with the outlet of the outer joint part, the clamping hook is connected with the joint pipe and clamped in the clamping groove,

the trip includes:

the clamping hook head is suitable for being clamped in the clamping groove and is suitable for stopping against a contact of the microswitch;

the trip arm, the trip arm press down the position and bounce between the position for the joint pipe is rotatable, the trip head is established the free end of trip arm, the trip head is in the trip arm is suitable for when pressing down the position to installation in the draw-in groove and be in the joint is in when the trip arm is in the bounce position in the draw-in groove, be formed with between the free end of trip arm and the pivot end and press the splenium.

2. The joint assembly for a range hood according to claim 1, wherein the outer joint portion further comprises:

the second elastic piece is stopped against the position between the pressing portion and the joint pipe so as to push the pressing portion to reset.

3. The joint assembly for a range hood according to claim 2, wherein the second elastic member is a coil spring, the pressing portion is provided with a mounting protrusion, the outer side surface of the joint pipe is provided with a stopping groove, one end of the coil spring is sleeved on the mounting protrusion, and the other end of the coil spring stops in the stopping groove.

4. The joint assembly for a range hood according to claim 1, wherein the outer joint portion further comprises:

the joint pipe stretches into in the shell, be equipped with on the shell and be used for making press the handle hole that the splenium exposes, the both sides of joint pipe are equipped with the spacing groove, be equipped with on the both sides wall face of shell and peg graft and be in spacing arch of spacing inslot, the trip includes a plurality ofly, and is a plurality of the trip is followed the circumference of joint pipe distributes, every press the pivot end of splenium with the shell passes through the cooperation realization of shaft hole and axostylus axostyle and is connected.

5. The joint assembly for a range hood according to claim 4, wherein the outer joint portion further comprises:

one end of the inner sleeve extends into one end, far away from the branch joint part, of the shell, an outer annular groove is formed in the peripheral surface of the inner sleeve, and an inner annular protrusion suitable for being inserted into the outer annular groove is formed in the inner peripheral wall of the shell;

the outer sleeve is sleeved outside the inner sleeve, an outer bent folded edge is arranged at one end of the outer sleeve, an inner folded edge is arranged at the end part of the outer shell, the outer bent folded edge is stopped between the inner folded edge and the inner annular bulge, and the outer cleaning part is suitable for extending into the inner sleeve and is connected with the joint pipe.

6. The joint assembly for a range hood according to claim 5, wherein the housing comprises:

a first housing;

the joint pipe the trip, interior sleeve pipe with the outer tube is located the installation space of injecing between first casing and the second casing.

7. The joint assembly for a range hood according to claim 6, wherein the first casing and the second casing are respectively provided with a positioning groove and a positioning protrusion on the surfaces thereof opposite to each other, and the positioning groove and the positioning protrusion cooperate to position the first casing and the second casing.

8. A cleaning system for a range hood, comprising a joint assembly for a range hood according to any one of claims 1 to 7.

9. A range hood comprising the cleaning system for a range hood according to claim 8.

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