Clothes treatment equipment and putting device thereof

Abstract

The utility model relates to the technical field of clothes treatment, and provides clothes treatment equipment and a putting device thereof, the putting device comprises a spray head and a pressure relief valve, the spray head forms a discharge port, a first channel, a negative pressure channel, a second channel and a pressure relief channel, the negative pressure channel communicates with the discharge port and the first channel, and the second channel communicates with the negative pressure channel; the pressure relief channel is communicated with the first channel and the atmosphere, the first channel is used for introducing a first fluid medium, the second channel is used for introducing a second fluid medium, and at least one of the first fluid medium and the second fluid medium is gas; the pressure relief valve is arranged in the pressure relief channel and used for selectively opening or closing the pressure relief channel. Under the condition that the discharge port is blocked, pressure can be released through the pressure release channel and the pressure release valve, the pressure in the negative pressure channel and the pressure in the first channel are reduced, and safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clothes processing, and in particular to a clothes processing device and a dispensing device thereof. BACKGROUND

[0002] This section is intended to provide background or context to the embodiments of the application. The description herein does not constitute admission of prior art.

[0003] In the related art, for clothes processing devices with a clothes drying function, steam is usually used to iron clothes, but the steam amount sprayed by the nozzle is small; in order to increase the steam amount, a scheme of atomizing water together is used, but the problem of excessive pressure of the nozzle is faced, and there are hidden dangers of reliability and safety. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application aims to provide a clothes processing device and a dispensing device thereof, and improve safety.

[0005] The present application provides a dispensing device of a clothes processing device, comprising:

[0006] a nozzle forming an outlet, a first channel, a negative pressure channel, a second channel and a pressure relief channel, the negative pressure channel being in communication with the outlet and the first channel, the second channel being in communication with the negative pressure channel, the pressure relief channel being in communication with the first channel and the atmosphere, the first channel being used for passing a first fluid medium, the second channel being used for passing a second fluid medium, at least one of the first fluid medium and the second fluid medium being a gas;

[0007] a pressure relief valve arranged in the pressure relief channel, the pressure relief valve being used for selectively opening or closing the pressure relief channel.

[0008] In some embodiments, the pressure relief valve unidirectionally opens the pressure relief channel, so that the first fluid medium in the first channel is discharged to the atmosphere.

[0009] In some embodiments, the pressure relief valve comprises a plug and an elastic member, the plug having a plugging position for closing the pressure relief channel;

[0010] the elastic member being used for maintaining the plug in the plugging position; the first fluid medium in the first channel being capable of driving the plug to deviate from the plugging position to open the pressure relief channel.

[0011] In some embodiments, the plug comprises a sealing disc and a positioning column, the positioning column being connected to a side of the sealing disc away from the pressure relief channel; one end of the elastic member is sleeved on the positioning column and abuts against the sealing disc.

[0012] In some embodiments, the pressure relief valve comprises a fixed member connected to the nozzle, and the elastic member is connected to the fixed member and the plug.

[0013] In some embodiments, the nozzle forms a mounting cavity in communication with the pressure relief passage, the mounting cavity has a mounting opening in communication with the atmosphere, the plug and the elastic member are both located in the mounting cavity, and the fixed member covers at least part of the mounting opening.

[0014] In some embodiments, the fixed member forms a vent hole, one end of the vent hole penetrates through the part of the fixed member located in the mounting cavity, and the other end of the vent hole penetrates through the other part of the fixed member located outside the mounting cavity.

[0015] In some embodiments, the pressure relief valve comprises a neck and a boss, the neck connects the fixed member and the boss, the side wall of the mounting cavity forms a locking groove, the neck is arranged in the locking groove, and the boss is located outside the mounting cavity and abuts against the surrounding part of the locking groove.

[0016] In some embodiments, the side wall of the mounting cavity forms a sliding groove in communication with the locking groove, the boss passes through the sliding groove from inside the mounting cavity to outside the mounting cavity, and the fixed member rotates so that the neck enters the locking groove from the sliding groove and the boss abuts against the surrounding part of the locking groove.

[0017] In some embodiments, the fixed member comprises an operation plate and a fixed part connected to the operation plate, the fixed part is located in the mounting cavity and connected to the nozzle, and the operation plate is located outside the mounting cavity and covers at least part of the mounting opening.

[0018] In some embodiments, the nozzle comprises a shell and a core, the first passage comprises a first entering section and a transition section, the shell forms the first entering section, the discharge opening, the pressure relief passage and the second passage, the core is located in the second passage, the core forms the transition section and the negative pressure passage, and the transition section is in communication with the first entering section and the negative pressure passage.

[0019] In some embodiments, the shell comprises a detachable shell cover and a shell body, the second passage comprises a second entering section and a placement cavity, the shell cover forms the discharge opening, the shell body forms the first entering section, the second entering section and the pressure relief passage, the shell cover and the shell body jointly form the placement cavity, the core is located in the placement cavity, and the placement cavity is in communication with the negative pressure passage and the second entering section.

[0020] In some embodiments, the shell body includes a main body, a first branch pipe, a second branch pipe, and a third branch pipe, the main body forms a part of the placing cavity, the first branch pipe forms the first entering section, the second branch pipe forms the second entering section, the third branch pipe forms the pressure relief channel with at least one of the main body, and the first branch pipe, the second branch pipe, and the third branch pipe are all connected with the main body.

[0021] The embodiments of the present application further provide a laundry treating apparatus, comprising:

[0022] A laundry treating cavity;

[0023] The dispensing device of any one of the above, the discharge port dispenses the first fluid medium and the second fluid medium into the laundry treating cavity.

[0024] In some embodiments, the laundry treating apparatus comprises a steam generator with a steam outlet, one of the first channel and the second channel is in communication with the steam outlet, and the other of the first channel and the second channel is in communication with the liquid storage container.

[0025] The dispensing device provided by the embodiments of the present application, the pressure relief channel is in communication with the first channel and the atmosphere, the opening and closing of the pressure relief channel is controlled by the pressure relief valve, in the case that the pressure in the first channel exceeds the preset pressure, the pressure relief channel can be opened by the pressure relief valve, the path between the first channel and the atmosphere is conducted, the first fluid medium in the first channel can be discharged to the atmosphere, the pressure in the first channel is reduced, thereby to a certain extent, the risk of pipe explosion is avoided. In the case that the pressure in the first channel is reduced to the preset pressure, the pressure relief channel can be closed by the pressure relief valve, the path between the first channel and the atmosphere is cut off, the first fluid medium in the first channel cannot be discharged to the atmosphere, and the first fluid medium in the first channel basically all enters the negative pressure channel. In this way, in the case that the discharge port is blocked, the pressure relief channel and the pressure relief valve can be used for pressure relief, the pressure in the negative pressure channel and the first channel is reduced, and the safety is improved. After the pressure relief is completed, the pressure relief valve can close the pressure relief channel, the first fluid medium in the first channel can flow through the negative pressure channel quickly, thereby to continue to suck the second fluid medium and jointly impact the discharge port, so that the scale or other substances attached to the discharge port are detached, and the nozzle can be restored to normal use. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic diagram of a dispensing device in an embodiment of the present application;

[0027] Figure 2 FIG. 2 is a structural schematic diagram of another perspective of the structure shown in FIG. 1; Figure 1

[0028] Figure 3 FIG. 3 is a structural schematic diagram of another perspective of the structure shown in FIG. 2; and Figure 1 ​A schematic view of another perspective of the structure shown;

[0029] Figure 4 For Figure 3 A schematic view of a cross-section in the direction of A-A;

[0030] Figure 5 For Figure 4 A schematic view of an enlarged view at B;

[0031] Figure 6 For Figure 4 A schematic view of an enlarged view at C;

[0032] Figure 7 A schematic view of a part of the structure of the laundry treatment apparatus according to an embodiment of the present application.

[0033] Explanation of reference signs

[0034] 100, laundry treatment apparatus; 100a, laundry treatment cavity; 2, steam generator; 3, drum; 4, front support;

[0035] 1, dispensing device; 11, spray head; 11a, discharge port; 11b, first channel; 11ba, first entry section; 11bb, transition section; 11c, negative pressure channel; 11ca, contraction section; 11cb, throat section; 11cc, expansion section; 11d, second channel; 11da, second entry section; 11db, placement cavity; 11e, pressure relief channel; 11f, mounting cavity; 11g, mounting port; 11h, locking groove; 11k, sliding groove; 11m, suction channel; 111, housing; 1111, housing cover; 1112, housing body; 11121, main body; 11122, first branch pipe; 11123, second branch pipe; 11124, third branch pipe; 112, core; 12, pressure relief valve; 121, plug; 1211, sealing disc; 1212, positioning column; 122, elastic member; 123, fixing member; 123a, air vent; 1231, operation plate; 1232, fixed part; 124, boss. DETAILED DESCRIPTION

[0036] In the case of no conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific embodiments should be understood as the explanation and description of the purpose of the present application, and should not be regarded as an improper limitation on the present application.

[0037] It should be noted that in the embodiments of the present application, down refers to the direction in which the ground is located, and up is opposite to down; front refers to the direction facing the user in the normal use state of the clothes treatment apparatus, and back is opposite to front; the up-down direction and the front-rear direction are perpendicular. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the embodiments of the present application, multiple refers to a number including two and more than two. The unit "℃" refers to the temperature unit Celsius.

[0039] The delivery device 1 provided in the embodiments of the present application is used in the clothes treatment apparatus 100. Please refer to Figure 1 and Figure 2 The clothes treatment apparatus 100 provided in the embodiments of the present application includes a clothes treatment cavity 100a and the delivery device 1 in any one of the embodiments of the present application.

[0040] The clothes treatment cavity 100a is used to place clothes. The delivery device 1 can be a structural member for delivering steam or water mist.

[0041] It can be understood that the water mist refers to water in the form of granular liquid droplets. The steam refers to the vaporization form of water after being heated at high temperature.

[0042] In some embodiments, one of the first channel 11b and the second channel 11d can be in communication with the power pumping structure, and the other of the first channel 11b and the second channel 11d is in communication with the liquid storage container. For example, the power pumping structure is in communication with the first channel 11b, and the liquid storage container is in communication with the second channel 11d. For another example, the power pumping structure is in communication with the second channel 11d, and the liquid storage container is in communication with the first channel 11b.

[0043] The power pumping structure refers to a structure that changes the flow direction and / or flow rate of a fluid by power provided by a power source. The power source includes but is not limited to electric energy or other energy sources. For example, the power pumping structure can be an air pump or a high-pressure water pump, etc.

[0044] The liquid storage container can be used to store clothes care liquid in liquid state.

[0045] Please refer to Figure 4 and Figure 7In the embodiment, the laundry treatment apparatus 100 includes a steam generator 2 having a steam outlet, one of the first passage 11b and the second passage 11d is communicated with the steam outlet. The other of the first passage 11b and the second passage 11d is communicated with the liquid reservoir. For example, the steam outlet is communicated with the first passage 11b, and the liquid reservoir is communicated with the second passage 11d. For another example, the steam outlet is communicated with the second passage 11d, and the liquid reservoir is communicated with the first passage 11b.

[0046] The steam generator 2 is configured to generate steam, and the steam outlet is configured to discharge the steam. That is, the steam generator 2 can convert liquid water into misty steam. For example, the steam generator 2 generates steam after being heated, and the steam is in the form of high-temperature mist.

[0047] It can be understood that the normal temperature refers to a temperature between 20℃ and 40℃, and the low temperature refers to a temperature lower than 20℃. The high temperature refers to a temperature higher than 40℃. The misty form refers to the liquid in the form of granular droplets. For example, the diameter of the droplet in the misty form can be not greater than 50μm (micrometer). This is only an example diameter of the misty form.

[0048] For example, the steam generator 2 can generate steam by heating. In an embodiment, the steam generator 2 includes a housing and a heating element, the housing forms a steam outlet and a heating chamber, the steam outlet is communicated with the heating chamber, and at least a part of the heating element is located in the heating chamber. The heating element heats the liquid in the heating chamber to generate steam, and the steam is discharged through the steam outlet.

[0049] In this embodiment, the high-temperature and high-pressure steam generated in the heating chamber enters the nozzle 11, for example, the negative pressure passage 11c. Taking the first fluid medium as steam and the second fluid medium as the laundry care liquid as an example, the high-speed steam can generate negative pressure in the negative pressure passage 11c, so that the laundry care liquid enters the negative pressure passage 11c. The laundry care liquid can cool the steam in the negative pressure passage 11c, so as to avoid that the temperature of the steam is too high. The high-speed steam can impact the laundry care liquid to generate liquid droplets to be sprayed into the laundry treatment cavity 100a.

[0050] In an embodiment, the heating element can convert electrical energy into heat energy, for example, the heating element can be an electric resistance heating structure. The heating element can also be other types of heating structures.

[0051] The discharge outlet 11a is configured to discharge the first fluid medium and the second fluid medium into the laundry treatment cavity 100a. That is, the first fluid medium and the second fluid medium are discharged from the nozzle 11 through the discharge outlet 11a.

[0052] The first fluid medium and the second fluid medium are both flowable fluids.

[0053] The first fluid medium and the second fluid medium can be different, for example, the first fluid medium is steam, and the second fluid medium is liquid; for another example, the first fluid medium is another gas, and the second fluid medium is steam.

[0054] The other gas includes, but is not limited to, air.

[0055] The liquid includes, but is not limited to, laundry care liquid, and the like. The laundry care liquid is in liquid state at room temperature and normal pressure. For example, the room temperature can be from -20°C to 50°C. The normal pressure can be a large pressure.

[0056] The laundry care liquid includes water liquid and functional agent, and the functional agent includes, but is not limited to, detergent, softener, and / or fragrance, and the like.

[0057] The detergent is used for cleaning clothes. The softener plays a role of softening, fluffing, eliminating static electricity of clothes, and the like. The fragrance is used for increasing the fragrance of clothes. The detergent includes, but is not limited to, water washing agent or dry cleaning agent. The dry cleaning agent is a kind of agent that can effectively remove dirt under waterless or micro-water condition. The dry cleaning agent can be organic solvent. The organic solvent can separate dirt from clothes by dissolving and / or adsorbing the dirt, so as to realize the cleaning of clothes.

[0058] For the convenience of description, the embodiments of the present application are described by taking the first fluid medium as steam and the second fluid medium as laundry care liquid as an example.

[0059] The laundry treatment apparatus 100 provided by the embodiments of the present application has functions that are not limited. For example, the laundry treatment apparatus 100 can have a drying function. The drying function can be used for drying clothes. The laundry treatment apparatus 100 can also have a washing function, which is used for cleaning clothes. For example, the laundry treatment apparatus 100 can be a clothes dryer or a washer-dryer, and the like.

[0060] The laundry treatment apparatus 100 can include a drum assembly. The axis of the drum assembly can extend in a horizontal direction or extend in an inclined direction. The drum assembly has a laundry treatment cavity 100a.

[0061] The axis of the drum assembly extending in the inclined direction means that the axis of the drum assembly is oblique to the horizontal direction.

[0062] The laundry treatment apparatus 100 with the axis of the drum assembly extending in the horizontal direction can also be referred to as a drum-type laundry treatment apparatus 100.

[0063] In an embodiment, please continue to refer to Figure 7, the drum assembly includes a rotatable clothes containing drum 3, the clothes containing drum 3 has a front opening access opening. The clothes containing drum 3 has a clothes treatment cavity 100a, the clothes containing drum 3 can be used to place a load such as clothes. A user puts clothes into or takes clothes out of the clothes containing drum 3 from the front through the access opening. The clothes containing drum 3 can rotate, during rotation of the clothes containing drum 3, the clothes are moved from below to above, under the action of gravity, the clothes fall from above to below, in this way, the clothes are dispersed, beaten and changed in posture under the joint action of the clothes containing drum 3 and gravity.

[0064] In some embodiments, the clothes containing drum 3 can be substantially hollow cylindrical.

[0065] In some embodiments, the drum assembly includes an outer tub, and the clothes containing drum 3 can be arranged in the outer tub. The outer tub can remain stationary. It can be understood that the outer tub can be arranged outside the clothes containing drum 3 or not.

[0066] In some embodiments, referring to Figure 7 , the drum assembly can only have the clothes containing drum 3 and not the above-mentioned outer tub, in this embodiment, the clothes containing drum 3 can be a single drum structure. That is, the clothes treatment apparatus 100 only has the clothes containing drum 3 as the drum.

[0067] In some embodiments, referring to Figure 7 , the clothes treatment apparatus 100 can include a front support 4, the axis of the drum assembly extends in a horizontal direction or an inclined direction, and the front support 4 can be arranged at the front end of the drum assembly. The front support 4 can provide support for the drum assembly.

[0068] The front support 4 can have a clothes feeding opening, the clothes feeding opening communicates with the clothes treatment cavity 100a. Taking the clothes containing drum 3 as a single drum structure as an example, the clothes containing drum 3 can be connected with the front support 4 through dynamic sealing, and the clothes feeding opening communicates with the access opening.

[0069] In some embodiments, referring to Figure 1 and Figure 7 , the feeding device 1 and the steam generator 2 are arranged on the front support 4. The front support 4 provides a mounting position for the feeding device 1 and the steam generator 2, solving the problem of inconvenient installation of the feeding device 1 and the steam generator 2. The front support 4 is arranged on the front side of the drum assembly, the clothes feeding opening of the front support 4 communicates with the clothes treatment cavity 100a, and the feeding device 1 is arranged on the front support 4, so that the fluid sprayed by the feeding device 1 can smoothly enter the clothes treatment cavity 100a.

[0070] In some embodiments, the clothes treatment apparatus 100 includes a cabinet, the drum assembly and the front support 4 are arranged in the cabinet, and the cabinet is provided with an opening that communicates with the clothes treatment cavity 100a of the drum assembly.

[0071] In some embodiments, the cabinet can be substantially hexahedral, for example, cubic or cuboid.

[0072] In some embodiments, the laundry treating apparatus 100 includes a door body for selectively opening or closing an opening of the cabinet.

[0073] In the related art, a laundry treating apparatus has a steam generator, and steam generated by the steam generator can be used for ironing laundry. The steam outlet of the steam generator discharges a small amount of steam, and in some cases, a nozzle is configured at the steam outlet of the steam generator, and the steam is discharged to the laundry treating cavity through the discharge outlet of the nozzle to improve the spraying effect of the steam, but the discharge outlet is prone to blockage, which poses a safety risk.

[0074] Referring to Figure 1 The delivery device 1 provided by the embodiments of the present application includes a nozzle 11 and a pressure relief valve 12.

[0075] Referring to Figures 1 to 6 The nozzle 11 forms a discharge outlet 11a, a first channel 11b, a negative pressure channel 11c, a second channel 11d, and a pressure relief channel 11e. The negative pressure channel 11c communicates the discharge outlet 11a and the first channel 11b. The second channel 11d communicates with the negative pressure channel 11c. The pressure relief channel 11e communicates the first channel 11b and the atmosphere.

[0076] The first channel 11b is used for passing the first fluid medium, and the second channel 11d is used for passing the second fluid medium. At least one of the first fluid medium and the second fluid medium is a gas.

[0077] Referring to Figure 6 The pressure relief valve 12 is arranged in the pressure relief channel 11e, and the pressure relief valve 12 is used for selectively opening or closing the pressure relief channel 11e.

[0078] At least one of the first fluid medium and the second fluid medium being a gas means that one of the first fluid medium and the second fluid medium is a gas, or both the first fluid medium and the second fluid medium are gases.

[0079] The negative pressure channel 11c is a channel for generating negative pressure.

[0080] The negative pressure channel 11c communicates the discharge outlet 11a and the first channel 11b. The first fluid medium flows through the first channel 11b, the negative pressure channel 11c, and the discharge outlet 11a in sequence. The flow of the first fluid medium in the negative pressure channel 11c generates negative pressure.

[0081] It can be understood that the negative pressure of the negative pressure channel 11c can be generated by controlling the flow rate of the first fluid medium in the negative pressure channel 11c.

[0082] The second channel 11d is in communication with the negative pressure channel 11c, and a negative pressure is generated in the negative pressure channel 11c, so that the second fluid medium in the second channel 11d enters the negative pressure channel 11c under the action of the negative pressure, that is, the first fluid medium and the second fluid medium are mixed in the negative pressure channel 11c and then discharged through the discharge port 11a.

[0083] After the steam is condensed, scale and other substances are easily formed to cause the discharge port 11a to be blocked. In the case where the discharge port 11a is blocked, the first channel 11b is blocked, and the pressure in the first channel 11b is increased, which easily causes the first pipeline in communication with the first channel 11b to burst, thereby causing a safety risk.

[0084] The pressure relief channel 11e is in communication with the first channel 11b and the atmosphere, and the pressure relief valve 12 is used to selectively open or close the pressure relief channel 11e. In the case where the pressure in the first channel 11b exceeds the preset pressure, the pressure relief valve 12 can open the pressure relief channel 11e to guide the path between the first channel 11b and the atmosphere, and the first fluid medium in the first channel 11b can be discharged to the atmosphere to reduce the pressure in the first channel 11b, thereby avoiding the risk of bursting to a certain extent. In the case where the pressure in the first channel 11b is reduced to the preset pressure, the pressure relief valve 12 can close the pressure relief channel 11e to cut off the path between the first channel 11b and the atmosphere, and the first fluid medium in the first channel 11b cannot be discharged to the atmosphere, and the first fluid medium in the first channel 11b basically enters the negative pressure channel 11c.

[0085] It can be understood that the preset pressure can be set according to requirements, for example, the preset pressure can be determined according to the pressure resistance performance of the first pipeline in communication with the first channel 11b. As an example, the maximum pressure that the first pipeline can withstand is 2Mpa (mega pascal), and the preset pressure can be set to 1Mpa to 1.5Mpa.

[0086] The delivery device 1 provided in the embodiments of the present application is provided with a pressure relief channel 11e which is communicated with the first channel 11b and the atmosphere, and a pressure relief valve 12 is arranged to control the opening and closing of the pressure relief channel 11e. When the pressure in the first channel 11b exceeds the preset pressure, the pressure relief valve 12 can be opened to open the path between the first channel 11b and the atmosphere, and the first fluid medium in the first channel 11b can be discharged to the atmosphere to reduce the pressure in the first channel 11b, thereby avoiding the risk of pipe explosion to a certain extent. When the pressure in the first channel 11b is reduced to the preset pressure, the pressure relief valve 12 can be closed to cut off the path between the first channel 11b and the atmosphere, and the first fluid medium in the first channel 11b cannot be discharged to the atmosphere, and the first fluid medium in the first channel 11b basically enters the negative pressure channel 11c. In this way, when the discharge port 11a is blocked, the pressure can be relieved through the pressure relief channel 11e and the pressure relief valve 12 to reduce the pressure in the negative pressure channel 11c and the first channel 11b, thereby improving the safety. After the pressure relief is completed, the pressure relief valve 12 can be closed to the pressure relief channel 11e, and the first fluid medium in the first channel 11b can quickly flow through the negative pressure channel 11c, thereby continuing to suck the second fluid medium and jointly impact the discharge port 11a, so that the scale or other substances attached to the discharge port 11a fall off, and the nozzle 11 can be restored to normal use.

[0087] In some embodiments, a vortex structure can be arranged in the negative pressure channel 11c, which can block the flow of the first fluid medium to generate vortex and / or flow separation to form negative pressure.

[0088] The shape of the vortex structure is not limited, and for example, the vortex structure can be in the shape of a convex hull or in the shape of a spiral, etc. The vortex structure can be arranged on the wall surface of the negative pressure channel 11c, for example, the vortex structure can be integrally formed with the negative pressure channel 11c.

[0089] The spiral shape means that the vortex structure is in the shape of a spiral line. The convex hull shape means that the vortex structure protrudes from the wall surface of the negative pressure channel 11c, and the vortex structure can be in the shape of a hemisphere, a polyhedron or an irregular special shape, etc.

[0090] In this embodiment, the negative pressure channel 11c can generate negative pressure, so that the clothes care liquid in the second channel 11d enters the negative pressure channel 11c under the action of the negative pressure, and the steam in the negative pressure channel 11c impacts the clothes care liquid to disperse the clothes care liquid into mist droplets, that is, to atomize the clothes care liquid.

[0091] In some embodiments, the negative pressure channel 11c can generate negative pressure through the Venturi effect.

[0092] For example, in some embodiments, please refer to Figure 4 and Figure 5, the negative pressure channel 11c comprises a convergent section 11ca and a throat section 11cb, and the flow area of the first end of the convergent section 11ca is greater than the flow area of the second end of the convergent section 11ca along the flow direction of the first fluid medium, and the second end of the convergent section 11ca is communicated with the first end of the throat section 11cb. For example, the flow area of the second end of the convergent section 11ca is equal to the flow area of the throat section 11cb.

[0093] The first end of the convergent section 11ca is the upstream end of the convergent section 11ca and the second end of the convergent section 11ca is the downstream end of the convergent section 11ca along the flow direction of the first fluid medium.

[0094] Here, the first fluid medium, for example, steam, flows through the convergent section 11ca first and then flows through the throat section 11cb. Specifically, the first fluid medium flows through the first end of the convergent section 11ca first and then enters the throat section 11cb through the second end of the convergent section 11ca. Since the flow area of the first end of the convergent section 11ca is greater than the flow area of the second end of the convergent section 11ca, the first fluid medium is accelerated and depressurized after passing through the convergent section 11ca and then enters the throat section 11cb, the flow rate of the first fluid medium in the throat section 11cb is greater than the flow rate of the first fluid medium at the first end of the convergent section 11ca, the pressure of the first fluid medium in the throat section 11cb is less than the pressure of the first fluid medium in the convergent section 11ca, the pressure around the outlet of the throat section 11cb is small and negative pressure is generated to drive the second fluid medium in the second channel 11d into the negative pressure channel 11c.

[0095] It should be noted that the flow cross section refers to the cross section orthogonal to all flow lines of the element flow or the total flow, that is, the plane perpendicular to the flow velocity cluster, for example, steam or laundry care liquid. When the flow lines are not parallel to each other, the flow cross section is a curved surface; when the flow lines are parallel straight lines, the flow cross section is a plane. The flow area is the area of the flow cross section.

[0096] In some embodiments, referring to Figure 4 and Figure 5 , the flow area of the convergent section 11ca gradually decreases from the first end to the second end along the flow direction of the first fluid medium. In this way, the flow rate of the first fluid medium gradually increases and the pressure gradually decreases in the convergent section 11ca, and the pressure changes continuously, which can reduce the turbulence of the first fluid medium.

[0097] In some embodiments, referring to Figure 4 and Figure 5 , the flow area of the throat section 11cb is constant at any position. The first fluid medium accelerated and depressurized by the convergent section 11ca enters the throat section 11cb, and the first fluid medium can flow relatively smoothly in the throat section 11cb, and the throat section 11cb plays a role of flow regulation so that the first fluid medium can flow smoothly at a high flow rate and a low pressure.

[0098] In some embodiments, referring to Figure 4 and Figure 5 , the negative pressure passage 11c comprises an expansion section 11cc, and the flow area of the expansion section 11cc gradually increases from the first end to the second end in the flow direction of the first fluid medium. In this way, the pressure can be further reduced.

[0099] In some embodiments, referring to Figure 4 and Figure 5 , the nozzle 11 forms a suction passage 11m, and the suction passage 11m communicates the negative pressure passage 11c and the second passage 11d.

[0100] For example, the steam flows in the negative pressure passage 11c to generate a negative pressure, so that the laundry care liquid in the second passage 11d enters the negative pressure passage 11c through the suction passage 11m under the action of the negative pressure. After the laundry care liquid enters the negative pressure passage 11c, the high-speed steam in the negative pressure passage 11c impacts the laundry care liquid, so that the laundry care liquid is dispersed into mist droplets.

[0101] In some embodiments, one end of the suction passage 11m communicates with the expansion section 11cc in the flow direction of the first fluid medium. In this way, the pressure of the expansion section 11cc is smaller, so that a larger negative pressure can be generated.

[0102] In some embodiments, the pressure relief valve 12 is an electrically controlled valve. The electrically controlled valve refers to a valve that controls the opening and closing of the valve by using an electrical signal. The electrically controlled valve has good active control performance.

[0103] In some embodiments, the pressure relief valve 12 is a non-electrically controlled mechanical valve. That is, the mechanical valve can not need an electrical signal to control the opening and closing.

[0104] In some embodiments, the pressure relief valve 12 unidirectionally opens the pressure relief passage 11e, so that the first fluid medium in the first passage 11b is discharged to the atmosphere. That is, the pressure relief valve 12 is a one-way valve, and when the pressure relief valve 12 is in an open state, the first fluid medium is unidirectionally discharged to the atmosphere through the pressure relief passage 11e, and air cannot enter the first passage 11b through the pressure relief passage 11e. In this way, the risk of foreign matter entering the nozzle 11 can be reduced to a certain extent.

[0105] In some embodiments, referring to Figure 4 and Figure 6 , Figure 6The plug 121 is in the blocking position, the pressure relief valve 12 comprises the plug 121 and the elastic member 122, the plug 121 has the blocking position for closing the pressure relief passage 11e; the elastic member 122 is used for keeping the plug 121 in the blocking position; the first fluid medium in the first passage 11b can drive the plug 121 to deviate from the blocking position to open the pressure relief passage 11e. Specifically, the first fluid medium in the first passage 11b can drive the plug 121 to deviate from the blocking position against the elastic force of the elastic member 122, so as to open the pressure relief passage 11e.

[0106] For example, in the normal use of the spray head 11, the pressure in the first passage 11b is lower than the preset pressure, the force exerted by the first fluid medium on the plug 121 is smaller than the elastic force of the elastic member 122, the elastic member 122 keeps the plug 121 in the blocking position, and the plug 121 closes the pressure relief passage 11e. If the discharge port 11a is blocked, the first fluid medium in the first passage 11b increases, the pressure in the first passage 11b reaches the preset pressure, the force exerted by the first fluid medium on the plug 121 is greater than the elastic force of the elastic member 122, and the first fluid medium can drive the plug 121 to deviate from the blocking position to open the pressure relief passage 11e. As the first fluid medium is discharged to the atmosphere, the pressure in the first passage 11b gradually decreases until the pressure in the first passage 11b is lower than the preset pressure, the force exerted by the first fluid medium on the plug 121 is smaller than the elastic force of the elastic member 122, and the plug 121 is reset to the blocking position to close the pressure relief passage 11e again. In this way, the plug 121 is driven by the combined force of the elastic force of the elastic member 122 and the pressure generated by the first fluid medium, so that the plug 121 can be switched between the state of closing the pressure relief passage 11e and the state of opening the pressure relief passage 11e.

[0107] It can be understood that the size of the elastic force of the elastic member 122 can be determined according to the size of the preset pressure, so as to control the timing of the plug 121 opening and closing the pressure relief passage 11e. The size of the elastic force of the elastic member 122 is generally positively correlated with the size of the preset pressure, for example, if the preset pressure needs to be increased, the elastic force of the elastic member 122 can be increased; if the preset pressure needs to be reduced, the elastic force of the elastic member 122 can be reduced.

[0108] In this embodiment, the plug 121 is driven by the combined force of the elastic force of the elastic member 122 and the pressure generated by the first fluid medium, so that the plug 121 can be switched between the state of closing the pressure relief passage 11e and the state of opening the pressure relief passage 11e, without the need for controlling the pressure relief valve 12 by means of electrical signal control, which has fast response speed, high efficiency and low cost.

[0109] The specific form of the elastic member 122 is not limited, and the elastic member 122 can be a spiral spring, for example, the elastic member 122 can be a tension spring or a compression spring, etc.

[0110] In some embodiments, referring to Figure 4 and Figure 6 , the plug 121 includes a sealing disc 1211 and a positioning column 1212, the positioning column 1212 is connected to the side of the sealing disc 1211 away from the pressure relief channel 11e; one end of the elastic member 122 is sleeved on the positioning column 1212 and abuts against the sealing disc 1211.

[0111] In this embodiment, one end of the elastic member 122 is sleeved on the positioning column 1212, and the positioning column 1212 limits the displacement of the elastic member 122, and the elastic member 122 and the plug 121 are easy to assemble and operate. One end of the elastic member 122 abuts against the sealing disc 1211, and the elastic force of the elastic member 122 is directed towards the pressure relief channel 11e, and the elastic force drives the sealing disc 1211 to abut against the surrounding part of the pressure relief channel 11e, thereby sealing the pressure relief channel 11e.

[0112] The shape of the positioning column 1212 is not limited, and the positioning column 1212 can be cylindrical, elliptical cylindrical or prismatic, etc.

[0113] The shape of the sealing disc 1211 is not limited, and the shape of the sealing disc 1211 includes but is not limited to a circular disc structure, an elliptical disc structure or a polygonal disc structure, etc.

[0114] In some embodiments, referring to Figure 4 and Figure 6 , the pressure relief valve 12 includes a fixing member 123, the fixing member 123 is connected to the nozzle 11, and the elastic member 122 is connected to the fixing member 123 and the plug 121. The fixing member 123 provides a support force for the elastic member 122, thereby reducing the risk of displacement of the elastic member 122.

[0115] In some embodiments, referring to Figure 4 and Figure 6 , the nozzle 11 forms a mounting cavity 11f in communication with the pressure relief channel 11e, the mounting cavity 11f has a mounting opening 11g in communication with the atmosphere, the plug 121 and the elastic member 122 are located in the mounting cavity 11f, and the fixing member 123 shields at least part of the mounting opening 11g.

[0116] The mounting cavity 11f communicates the pressure relief channel 11e and the atmosphere. The plug 121 and the elastic member 122 can enter the mounting cavity 11f through the mounting opening 11g, and the fixing member 123 shields at least part of the mounting opening 11g to avoid the plug 121 and the elastic member 122 from being separated from the mounting cavity 11f through the mounting opening 11g.

[0117] In this embodiment, the plug 121 and the elastic member 122 are located in the installation cavity 11f, which can protect the plug 121 and the elastic member 122, reduce the interference of external objects on the plug 121 and the elastic member 122, and improve reliability. The installation cavity 11f is connected to the pressure relief channel 11e and the atmosphere. In the case that the pressure relief valve 12 opens the pressure relief channel 11e, the first fluid medium can be discharged to the atmosphere through the installation port 11g.

[0118] In some embodiments, referring to Figure 1 , Figure 4 and Figure 6 , the fixing member 123 forms an air vent hole 123a, one end of the air vent hole 123a penetrates the part of the fixing member 123 located in the installation cavity 11f, and the other end of the air vent hole 123a penetrates the other part of the fixing member 123 located outside the installation cavity 11f.

[0119] In this embodiment, the air vent hole 123a is a through hole with both ends penetrating, in the case that the pressure relief valve 12 opens the pressure relief channel 11e, the first fluid medium from the pressure relief channel 11e can be discharged to the atmosphere through the air vent hole 123a, increasing the discharge path of the first fluid medium, improving the discharge efficiency, and reducing the pressure in the first channel 11b more quickly.

[0120] In some embodiments, referring to Figure 1 , Figure 2 and Figure 6 , the pressure relief valve 12 includes a neck and a boss 124, the neck connects the fixing member 123 and the boss 124, the side wall of the installation cavity 11f forms a locking groove 11h, the neck is arranged in the locking groove 11h, and the boss 124 is located outside the installation cavity 11f and abuts against the surrounding part of the locking groove 11h.

[0121] The size of the boss 124 is greater than the size of the locking groove 11h, and the size of the neck is smaller than the size of the locking groove 11h. For example, taking the plane where the locking groove 11h is located as the projection plane, the projection area of the boss 124 is greater than the projection area of the locking groove 11h, and the projection area of the neck is smaller than the projection area of the locking groove 11h.

[0122] For example, the installation cavity 11f extends along a first direction, the installation cavity 11f forms an installation port 11g away from one end of the pressure relief channel 11e along the first direction, and the installation cavity 11f forms a locking groove 11h around the side wall along the first direction.

[0123] The locking groove 11h restricts the neck, and the groove wall of the locking groove 11h limits the movement of the neck to lock the fixing member 123, avoiding the fixing member 123 from being taken out of the installation cavity 11f; the boss 124 is located outside the installation cavity 11f and abuts against the surrounding part of the locking groove 11h, and the boss 124 and the fixing member 123 jointly clamp the surrounding part of the locking groove 11h, which can avoid the neck from being separated from the locking groove 11h and entering the installation cavity 11f. In this way, the fixing member 123 is connected to the nozzle 11 by the boss 124 and the neck, avoiding the elastic member 122 and the plug 121 from being taken out of the installation cavity 11f through the installation opening 11g.

[0124] In some embodiments, referring to Figures 1 to 6 , the side wall of the installation cavity 11f forms a sliding groove 11k in communication with the locking groove 11h, and the boss 124 passes through the sliding groove 11k from the inside of the installation cavity 11f to the outside of the installation cavity 11f, and the fixing member 123 is rotated to make the neck enter the locking groove 11h from the sliding groove 11k, and make the boss 124 abut against the surrounding part of the locking groove 11h. Specifically, the sliding groove 11k is formed by the side wall of the installation cavity 11f around the first direction. The fixing member 123 is rotated around the first direction to make the neck enter the locking groove 11h from the sliding groove 11k.

[0125] The size of the boss 124 and the size of the neck are both smaller than the size of the sliding groove 11k, and the size of the locking groove 11h is smaller than the size of the sliding groove 11k. For example, taking the plane where the locking groove 11h is located as the projection plane, the projection area of the boss 124 and the projection area of the neck are both smaller than the projection area of the sliding groove 11k, and the projection area of the locking groove 11h is smaller than the projection area of the sliding groove 11k.

[0126] For example, in the case where the pressure relief valve 12 needs to be installed, the plug 121 can be assembled into the installation cavity 11f first, and then the elastic member 122 is assembled on the fixing member 123, and then the fixing member 123 assembled with the elastic member 122 is inserted into the installation cavity 11f, and the boss 124 enters the installation cavity 11f along with the fixing member 123, and when the boss 124 moves to the position where the sliding groove 11k is located, the boss 124 passes through the sliding groove 11k from the inside of the installation cavity 11f to the outside of the installation cavity 11f, and the neck is arranged in the sliding groove 11k, and the fixing member 123 is rotated in the forward direction, the neck enters the locking groove 11h from the sliding groove 11k, and the boss 124 abuts against the surrounding part of the locking groove 11h, and the installation of the pressure relief valve 12 is completed.

[0127] When the pressure relief valve 12 needs to be unloaded, for example, when the plug 121 and the elastic member 122 need to be maintained, the fixed member 123 can be rotated reversely, the fixed member 123 drives the boss 124 and the neck to rotate reversely, the neck enters the sliding slot 11k from the locking slot 11h, the boss 124 moves to the position where the sliding slot 11k is located, and then the fixed member 123 is pulled outward, the fixed member 123 drives the elastic member 122 to be pulled out of the installation cavity 11f, so that the unloading of the pressure relief valve 12 can be realized.

[0128] In this embodiment, the sliding slot 11k which is in communication with the locking slot 11h is used, and the installation and unloading of the pressure relief valve 12 can be completed by rotating and pulling the fixed member 123 without the need of special tools, and the operation is simple.

[0129] In some embodiments, referring to Figures 1 to 6 , the fixed member 123 includes an operation plate 1231 and a fixed part 1232 connected with the operation plate 1231, the fixed part 1232 is located in the installation cavity 11f and connected with the nozzle 11, and the operation plate 1231 is located outside the installation cavity 11f and covers at least part of the installation opening 11g.

[0130] For example, the neck connects the fixed part 1232 and the boss 124.

[0131] In this embodiment, the operation plate 1231 is located outside the installation cavity 11f, which is convenient for an operator to hold the operation plate 1231 to rotate or pull the fixed member 123. The operation plate 1231 covers at least part of the installation opening 11g, and in the case that the operation plate 1231 abuts against the surrounding part of the installation opening 11g, the operator can obtain the prompt that the fixed member 123 is inserted into the position by the sense of touch, and the operation is simplified. The fixed part 1232 is located in the installation cavity 11f and connected with the nozzle 11, and the elastic member 122 can be connected with the fixed part 1232.

[0132] In some embodiments, referring to Figure 6 , one end of the vent hole 123a penetrates the fixed part 1232, and the other end of the vent hole 123a penetrates the operation plate 1231. For example, one end of the vent hole 123a penetrates the fixed part 1232 and faces the end surface of the plug 121, and the other end of the vent hole 123a penetrates the operation plate 1231 and is away from the end surface of the plug 121.

[0133] In some embodiments, referring to Figures 1 to 6The nozzle 11 comprises a shell 111 and a core 112, the first channel 11b comprises a first inlet section 11ba and a transition section 11bb, the shell 111 forms the first inlet section 11ba, the discharge port 11a, the pressure relief channel 11e and the second channel 11d, the core 112 is located in the second channel 11d, the core 112 forms the transition section 11bb and the negative pressure channel 11c, and the transition section 11bb communicates the first inlet section 11ba and the negative pressure channel 11c.

[0134] Specifically, the first fluid medium flows through the first inlet section 11ba, the transition section 11bb and the negative pressure channel 11c in sequence.

[0135] For example, the core 112 forms a suction channel 11m. The negative pressure channel 11c and the transition section 11bb can extend along the length direction of the core 112, one end of the suction channel 11m communicates with the negative pressure channel 11c, and the other end of the suction channel 11m can penetrate through the circumferential surface of the core 112. In this way, the suction channel 11m can communicate with the second channel 11d.

[0136] It can be understood that the circumferential surface of the core 112 refers to the outer surface surrounding the length direction of the core 112.

[0137] In this embodiment, the shell 111 and the core 112 can be manufactured separately, so as to reduce the manufacturing difficulty of the nozzle 11. The core 112 is accommodated in the second channel 11d, and the overall structure of the nozzle 11 is compact and relatively small in size.

[0138] In some embodiments, referring to Figures 1 to 6 The shell 111 comprises a detachable shell cover 1111 and a shell body 1112, the second channel 11d comprises a second inlet section 11da and a placement cavity 11db, the shell cover 1111 forms the discharge port 11a, the shell body 1112 forms the first inlet section 11ba, the second inlet section 11da and the pressure relief channel 11e, the shell cover 1111 and the shell body 1112 jointly form the placement cavity 11db, the core 112 is located in the placement cavity 11db, and the placement cavity 11db communicates the negative pressure channel 11c and the second inlet section 11da.

[0139] Specifically, the second fluid medium flows through the second inlet section 11da, the placement cavity 11db and the negative pressure channel 11c in sequence. The suction channel 11m can communicate with the placement cavity 11db.

[0140] In this embodiment, the shell cover 1111 and the shell body 1112 can be manufactured separately, so as to reduce the manufacturing difficulty of the shell 111. During the assembly of the nozzle 11, the core 112 can be placed in the part of the shell body 1112 forming the placement cavity 11db, and then the shell cover 1111 and the shell body 1112 are detachably connected, so as to realize the assembly of the shell 111 and the core 112, which is simple to operate.

[0141] In some embodiments, referring to Figures 1 to 6 The shell body 1112 includes a main body 11121, a first branch pipe 11122, a second branch pipe 11123, and a third branch pipe 11124. The main body 11121 forms a part of the placement cavity 11db. The first branch pipe 11122 forms the first entering section 11ba. The second branch pipe 11123 forms the second entering section 11da. The third branch pipe 11124 forms the pressure relief channel 11e with at least one of the main body 11121. The first branch pipe 11122, the second branch pipe 11123, and the third branch pipe 11124 are connected with the main body 11121.

[0142] The third branch pipe 11124 forms the pressure relief channel 11e with at least one of the main body 11121. For example, the third branch pipe 11124 forms the pressure relief channel 11e. For another example, the main body 11121 forms the pressure relief channel 11e. For yet another example, the third branch pipe 11124 and the main body 11121 jointly form the pressure relief channel 11e.

[0143] For example, the third branch pipe 11124 forms the mounting cavity 11f. An end of the third branch pipe 11124 away from the main body 11121 forms the mounting opening 11g. The side wall of the third branch pipe 11124 forms the sliding groove 11k and the locking groove 11h. The fixing part 1232, the elastic member 122, and the plug 121 can be accommodated in the third branch pipe 11124.

[0144] The third branch pipe 11124 can be located on a side of the main body 11121 away from the second branch pipe 11123, so as to avoid the third branch pipe 11124 interfering with the connection of the second branch pipe 11123 with the second pipeline.

[0145] In this embodiment, the first branch pipe 11122 can be in communication with the first pipeline to introduce the first fluid medium. The second branch pipe 11123 can be in communication with the second pipeline to introduce the second fluid medium. The first branch pipe 11122 and the second branch pipe 11123 facilitate the connection of the first pipeline and the second pipeline with the nozzle 11.

[0146] In some embodiments, the main body 11121 has an open groove. The shell cover 1111 closes the opening of the open groove to define the placement cavity 11db. The outer surface of the shell cover 1111 away from the main body 11121 forms the discharge opening 11a. In this way, the core body 112 can be assembled into the open groove through the opening of the open groove. Then, the shell cover 1111 is used to close the opening of the open groove to complete the assembly of the shell body 111 and the core body 112. The assembly is simple, convenient, and easy.

[0147] In some embodiments, referring to Figures 1 to 6The core 112 can be detachably disposed in the placement cavity 11db. In this way, when maintenance such as cleaning or replacement of the core 112 is required, the core 112 can be taken out for maintenance such as cleaning or replacement without damaging the shell 111.

[0148] The detachable connection manner of the shell cover 1111 and the shell body 1112, for example, the main body 11121, is not limited, and is exemplarily threaded connection or clamping, etc.

[0149] In some embodiments, the main body 11121, the first branch pipe 11122, the second branch pipe 11123, and the third branch pipe 11124 can be an integrally formed structure. In this way, that is, the shell body 1112 can be an integrally formed structure, which can reduce the assembly process.

[0150] In some embodiments, the shell cover 1111 can be an integrally formed structure.

[0151] In some embodiments, the core 112 can be an integrally formed structure.

[0152] The first branch pipe 11122 can be substantially in the shape of a hollow cylinder, so as to facilitate connection of the first pipeline.

[0153] The second branch pipe 11123 can be substantially in the shape of a hollow cylinder, so as to facilitate connection of the second pipeline.

[0154] The third branch pipe 11124 can be substantially in the shape of a hollow cylinder, so as to facilitate assembly of the pressure relief valve 12.

[0155] It should be noted that the first pipeline described above can be a complete pipe body or can be connected by multiple pipe bodies, which is not limited here.

[0156] The second pipeline described above can be a complete pipe body or can be connected by multiple pipe bodies, which is not limited here.

[0157] In some embodiments, the dispensing device 1 includes a first sealing ring, which is disposed at the connection between the shell body 1112 and the shell cover 1111 to seal the gap at the connection between the shell body 1112 and the shell cover 1111.

[0158] In some embodiments, the dispensing device 1 includes a second sealing ring, which is disposed at the connection between the core 112 and the shell body 1112 to seal the gap at the connection between the core 112 and the shell body 1112.

[0159] In some embodiments, the laundry treatment apparatus 100 can include a storage container, which can be used to store a laundry care liquid. For example, the storage container is communicated with the second passage 11d through the second pipeline.

[0160] In this embodiment, the steam generated by the steam generator 2 and the clothes care liquid in the storage container are both introduced into the clothes introduction cavity through the dispensing device 1, which increases the water mist content of the steam, improves the ironing and wrinkle removal effects, and has good visual effects. Moreover, the steam generator 2 and the dispensing device 1 can be used to dispense functional agents, which can simplify the dispensing path of the functional agents, reduce the parts used for dispensing the functional agents, have high integration and reliability, and low cost.

[0161] For example, the first fluid medium is steam, and the second fluid medium is water liquid. The steam collides with the water liquid to generate water mist, thereby increasing the water mist content. The steam and the water mist sprayed by the dispensing device 1 can be used to remove wrinkles and iron clothes, thereby reducing the wrinkles generated during the drying process of the clothes. During the drying process of the clothes, the clothes are dried by the dry hot air flow. If the temperature of the dry hot air flow is too high, the clothes will be dried too fast, which will cause the clothes to have more wrinkles and deeper creases. If the temperature of the dry hot air flow is too low, the drying time will be prolonged, and the clothes may not be dried to the required degree. In this embodiment, the steam carrying mist liquid droplets is sprayed into the clothes treatment cavity 100a by the dispensing device 1 in the last stage of the drying process of the clothes. While the clothes are dried by the dry hot air flow, the steam carrying mist liquid droplets slightly moistens the clothes again. The steam carrying mist is used to humidify and cool the clothes to a certain extent, which can achieve the effect of ironing the clothes and effectively improve the problems of more wrinkles and deeper creases caused by too fast drying.

[0162] For example, the first fluid medium is steam, and the second fluid medium is dry cleaning agent. The steam and the mist liquid droplets of the dry cleaning agent sprayed by the dispensing device 1 can be used to clean clothes. The steam collides with the dry cleaning agent, and the mixture of the dry cleaning agent and the steam is sprayed in the form of high-speed and high-energy mist onto the clothes. This not only reduces the amount of dry cleaning agent used, but also facilitates the penetration of the dry cleaning agent into the fibers of the clothes. The steam can slightly moisten the clothes, thereby improving the dirt removal efficiency.

[0163] In some embodiments, the clothes treatment apparatus 100 is a clothes dryer. The clothes treatment apparatus 100 includes a circulating air duct. The rear side wall of the clothes containing drum 3 is formed with at least one air inlet communicating with the clothes treatment cavity 100a. The circulating air duct communicates the air inlet with an air outlet of the clothes treatment cavity 100a. The circulating air duct is used to provide circulating air flow that repeatedly flows through the clothes treatment cavity 100a. The air flow of the circulating air duct can enter the clothes treatment cavity 100a through the air inlet. The air flow in the clothes treatment cavity 100a can enter the circulating air duct through the air outlet. The air flow can circulate between the circulating air duct and the clothes treatment cavity 100a.

[0164] It can be understood that the number of air inlets can be one or more, for example, two, three, four, or five, and the like.

[0165] In some embodiments, the clothes treatment device 100 comprises a heat exchange assembly located in the circulating air duct, the heat exchange assembly is used to exchange heat with the air flow in the circulating air duct, so as to dehumidify and heat. The wet and hot air flow in the clothes treatment cavity 100a enters the circulating air duct and is converted into a dry and hot air flow after heat exchange with the heat exchange assembly, and the dry and hot air flow flows back to the clothes treatment cavity 100a through the air inlet.

[0166] In some embodiments, the heat exchange assembly comprises a condenser and an evaporator, and the clothes treatment device 100 further comprises a compressor and a throttling device, the compressor, the condenser, the throttling device and the evaporator are connected by pipelines to form a heat pump system, and the refrigerant can circulate in the heat pump system. The air flow in the circulating air duct exchanges heat with the refrigerant in the evaporator and the condenser to form a dry and hot air flow. The evaporator is used to cool and dehumidify the wet and hot air flow from the clothes treatment cavity 100a into a dry and cold air flow; and the condenser heats the dry and cold air flow into a dry and hot air flow to flow back to the clothes treatment cavity 100a.

[0167] The working principle of the heat pump system is as follows: the compressor sucks in low-pressure gaseous refrigerant and compresses it into high-pressure discharge; the high-pressure refrigerant discharged into the condenser transfers heat to the air flow to condense into high-pressure liquid; the high-pressure liquid refrigerant flows through the throttling device to reduce pressure and becomes a low-pressure low-temperature gas-liquid two-phase mixture into the evaporator; the refrigerant in the evaporator absorbs the heat of the air flow to become low-pressure gas; the low-pressure gaseous refrigerant is sucked into the compressor again; the heat exchange is realized through repeated circulation. That is, the evaporator is used to cool and dehumidify the wet and hot air flow from the clothes treatment cavity 100a into a dry and cold air flow, and the condenser heats the dry and cold air flow into a dry and hot air flow to flow back to the clothes treatment cavity 100a. The dry and hot air flow flowing back to the clothes treatment cavity 100a contacts the wet clothes again to form a wet and hot air flow, and completes a drying cycle. Through repeated operation of the drying cycle, the circulating air flow is continuously provided to the clothes treatment cavity 100a to dry the clothes.

[0168] Exemplarily, the evaporator and the condenser can both be finned tube heat exchangers.

[0169] Exemplarily, the throttling device includes but is not limited to an electronic expansion valve and the like.

[0170] In some embodiments, the clothes treatment device 100 comprises a fan wheel, and the fan wheel is used to drive the air flow. Exemplarily, the fan wheel is located in the circulating air duct. In the process of drying the clothes, the fan wheel is used to drive the air flow flowing through the clothes to flow through the evaporator and the condenser in turn, and then blow to the clothes to form a circulating air flow. The fan wheel can accelerate the flow of the air flow and improve the drying efficiency.

[0171] In the description of the application, the description of the terms "in an embodiment", "in some embodiments" or "exemplary" and the like means that the specific feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearance of the above-mentioned terms in various places in the specification are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the application can be combined with other embodiments or examples in the application, where the context allows that the combination does not result in contradictory or inconsistent.

[0172] The above only describes the preferred embodiments of the application and is not intended to limit the application. The application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application is included in the protection scope of the application.

Claims

1. A dispensing device of a laundry treating apparatus, characterized by, The application relates to a nozzle, comprising: a nozzle head, which forms a discharge port, a first channel, a negative pressure channel, a second channel and a pressure relief channel, the negative pressure channel being in communication with the discharge port and the first channel, the second channel being in communication with the negative pressure channel, the pressure relief channel being in communication with the first channel and the atmosphere, the first channel being used for passing a first fluid medium, the second channel being used for passing a second fluid medium, at least one of the first fluid medium and the second fluid medium being gas; a pressure relief valve, which is arranged in the pressure relief channel, and is used for selectively opening or closing the pressure relief channel.

2. The dispensing device of claim 1, wherein, The pressure relief valve unidirectionally opens the pressure relief channel, so that the first fluid medium in the first channel is discharged to the atmosphere.

3. The dispensing device of claim 1, wherein, The pressure relief valve comprises a plug and an elastic member, the plug has a plugging position for closing the pressure relief channel; the elastic member is used for keeping the plug in the plugging position; the first fluid medium in the first channel can drive the plug to deviate from the plugging position, so as to open the pressure relief channel.

4. The dispensing device of claim 3, wherein, The plug comprises a sealing disc and a positioning column, the positioning column is connected to one side of the sealing disc which is far away from the pressure relief channel; one end of the elastic member is sleeved on the positioning column and abuts against the sealing disc.

5. The dispensing device of claim 3, wherein, The pressure relief valve comprises a fixing member, the fixing member is connected with the nozzle head, and the elastic member is connected with the fixing member and the plug.

6. The dispensing device of claim 5, wherein, The nozzle head forms a mounting cavity which is in communication with the pressure relief channel, the mounting cavity has a mounting port which is in communication with the atmosphere, the plug and the elastic member are located in the mounting cavity, and the fixing member shields at least part of the mounting port.

7. The dispensing device of claim 6, wherein, The fixing member forms an air hole, one end of the air hole penetrates through the part of the fixing member which is located in the mounting cavity, and the other end of the air hole penetrates through the other part of the fixing member which is located outside the mounting cavity.

8. The dispensing device of claim 6, wherein, The pressure relief valve comprises a neck and a boss, the neck is connected with the fixing member and the boss, a side wall of the mounting cavity forms a locking groove, the neck is arranged in the locking groove, and the boss is located outside the mounting cavity and abuts against the surrounding part of the locking groove.

9. The dispensing device of claim 8, wherein, A side wall of the mounting cavity forms a sliding groove which is in communication with the locking groove, the boss passes through the sliding groove from the mounting cavity to the outside of the mounting cavity, and the fixing member rotates so that the neck enters the locking groove from the sliding groove, and so that the boss abuts against the surrounding part of the locking groove.

10. The dispensing device of claim 6, wherein, The fixing member comprises an operation plate and a fixing part which is connected with the operation plate, the fixing part is located in the mounting cavity and is connected with the nozzle head, the operation plate is located outside the mounting cavity and shields at least part of the mounting port.

11. The dispensing device according to any one of claims 1 to 10, characterized in that The nozzle comprises a shell and a core, the first channel comprises a first entering section and a transition section, the shell forms the first entering section, the discharge port, the pressure relief channel and the second channel, the core is located in the second channel, the core forms the transition section and the negative pressure channel, and the transition section is in communication with the first entering section and the negative pressure channel.

12. The dispensing device of claim 11, wherein, The shell comprises a detachably connected shell cover and shell body, the second channel comprises a second inlet section and a placement cavity, the shell cover forms the discharge port, the shell body forms the first inlet section, the second inlet section and the pressure relief channel, the shell cover and the shell body jointly form the placement cavity, the core body is located in the placement cavity, and the placement cavity is communicated with the negative pressure channel and the second inlet section.

13. The dispensing device of claim 12, wherein, The shell body comprises a main body, a first branch pipe, a second branch pipe and a third branch pipe, the main body forms a part of the placement cavity, the first branch pipe forms the first inlet section, the second branch pipe forms the second inlet section, and the third branch pipe forms the pressure relief channel with at least one of the main body, and the first branch pipe, the second branch pipe and the third branch pipe are all connected with the main body. 14.A laundry treating apparatus, characterized by, The laundry treating apparatus comprises: a laundry treating cavity; The dispensing device according to any one of claims 1 to 13, wherein the discharge port dispenses the first fluid medium and the second fluid medium into the laundry treating cavity. 15.The laundry treating apparatus according to claim 14, wherein, The laundry treating apparatus comprises a steam generator having a steam outlet, one of the first channel and the second channel is communicated with the steam outlet, and the other of the first channel and the second channel is communicated with a liquid storage container.

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