CN218394175U - Spraying device and clothes treatment equipment - Google Patents

Abstract

The application relates to the technical field of clothes treatment, and provides a spraying device and clothes treatment equipment, wherein the spraying device comprises a body and a branch pipe, the body is provided with an inflow cavity and a first flow passage for circulating a first fluid medium, the first flow passage is provided with a suction inlet, and the suction inlet is communicated with the inflow cavity and the first flow passage; the branch pipe is connected to the first connection position of the body, a second flow channel for flowing a second fluid medium is formed in the branch pipe, the second flow channel is communicated with the flow inlet cavity, and at least part of the flow inlet cavity is located between the first connection position and the suction inlet. The second fluid medium is firstly mixed with the air in the inflow cavity to be dispersed into a gas-liquid mixture, so that the pre-atomization of the second fluid medium is realized, and the pre-atomized gas-liquid mixture enters the first flow channel to be further dispersed into atomized liquid drops. In this way, the atomization effect of the second fluid medium is increased by the pre-atomization step of the inlet chamber.

Description

Spraying device and clothes treatment equipment

Technical Field

The application relates to the technical field of clothes treatment, in particular to a spraying device and clothes treatment equipment.

Background

The clothes processing equipment usually adopts a mode of washing clothes to remove stains of the clothes, and the clothes made of special materials, such as down feather, silk and the like, which are not suitable for washing, need a user to send the clothes to a dry cleaning store for dry cleaning, and particularly, when the clothes made of the materials only have local stains, namely the stain degree is low, or only peculiar smell exists, and the like, the time and the labor are consumed for sending the clothes to the dry cleaning store for dry cleaning.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a spray device capable of spraying a dry detergent and a laundry treating apparatus.

To achieve the above object, an aspect of the embodiments of the present application provides a spray device for a laundry treating apparatus, the spray device including:

the body is provided with an inflow cavity and a first flow channel for flowing a first fluid medium, the first flow channel is provided with a suction inlet, and the suction inlet is communicated with the inflow cavity and the first flow channel;

the branch pipe is connected to the first connection position of the body, a second flow channel for flowing a second fluid medium is formed in the branch pipe, the second flow channel is communicated with the flow inlet cavity, and at least part of the flow inlet cavity is located between the first connection position and the suction inlet.

In some embodiments, the first flow passage includes a venturi flow passage and a negative pressure flow passage, the negative pressure flow passage communicates the venturi flow passage and the intake chamber, the negative pressure flow passage is formed with the intake port, the venturi flow passage has a jet outlet, the intake chamber has an intake port for a second fluid medium to enter, and the intake port is located at the first connection.

In some embodiments, the venturi flow passage includes a constriction and a throat section, the flow cross-sectional area of a first end of the constriction is greater than the flow cross-sectional area of a second end of the constriction in the direction of flow of the first fluid medium, and the second end of the constriction communicates with the first end of the throat section.

In some embodiments, the inflow opening is located upstream of the constriction section in the flow direction of the first fluid medium.

In some embodiments, the venturi flow passage includes a diverging section having a flow cross-sectional area at a first end thereof that is smaller than a flow cross-sectional area at a second end thereof in a flow direction of the first fluid medium, the first end of the diverging section communicating with the second end of the throat section, the second end of the diverging section forming the injection outlet.

In some embodiments, the body includes a housing and an atomizing core, the housing forms the inlet chamber and a mist outlet communicated with the inlet chamber, the atomizing core is accommodated in the inlet chamber, the atomizing core forms the first flow passage and a spray outlet communicated with the first flow passage, and the spray outlet is communicated with the mist outlet.

In some embodiments, the first flow channel includes a venturi flow channel and a negative pressure flow channel, the negative pressure flow channel communicates the venturi flow channel and the intake cavity, the negative pressure flow channel is formed with the suction inlet, the venturi flow channel and the intake cavity both extend in the longitudinal direction, the first connection is located on a circumferential surface formed on the intake cavity, the mist outlet is formed on a side surface of the housing in the longitudinal direction, the spray outlet is formed on a surface of the atomizing core facing the mist outlet, and the negative pressure flow channel penetrates through a circumferential wall of the atomizing core from the venturi flow channel to communicate with the intake cavity.

In some embodiments, the number of the negative pressure flow passages is multiple, and the multiple negative pressure flow passages are arranged at intervals along the circumferential direction of the atomizing core.

In some embodiments, the housing is formed with a joint and a communication flow passage, the communication flow passage communicates the venturi flow passage and the joint, and an extending direction of the joint intersects an extending direction of the venturi flow passage.

In some embodiments, the branch pipe is located on a concave side of a bending structure formed by the joint and the inflow cavity.

In some embodiments, the housing is formed with an inlet, the atomizing core is formed with an inlet communicated with the first flow channel, the inlet is in butt communication with the inlet, and the sealing ring is clamped between a peripheral part of the inlet and a peripheral part of the inlet.

In some embodiments, the housing includes a cover and a body, the body forms an open slot which is open towards the second longitudinal end, the cover covers the opening of the open slot to define the inflow chamber, and the cover forms the mist outlet on the surface of the second longitudinal end.

In some embodiments, the atomizing core is detachably arranged in the flow inlet cavity, and the cover shell detachably covers the opening of the open slot.

In some embodiments, the cover and the main body are connected by screw threads, a first fluid medium supplementing channel is formed at the screw thread matching position of the cover and the main body, and the air supplementing channel is communicated with the flow inlet cavity.

In some embodiments, the atomizing core includes a neck portion having a flow passage and a head portion having the first flow passage, the neck portion is located on a side of the head portion close to the branch pipe, a distance between an outer peripheral surface of the neck portion and a circumferential surface of the flow inlet chamber is greater than a distance between the outer peripheral surface of the head portion and the circumferential surface of the flow inlet chamber, and the first connection is located at a position of the flow inlet chamber corresponding to the neck portion.

Another aspect of embodiments of the present application provides a laundry treating apparatus, including:

a laundry treating drum having a laundry treating chamber;

a reservoir for containing a dry cleaning agent;

an air pump;

in the injection apparatus of any one of the above claims, an outlet of the reservoir is communicated with the second flow channel, and an outlet of the air pump is communicated with the first flow channel.

In some embodiments, the laundry treating apparatus includes a front support disposed at a front end of the laundry treating drum, and the reservoir, the air pump, and the spraying device are disposed on the front support.

According to the injection device provided by the embodiment of the application, the first flow channel generates negative pressure, so that the second fluid medium in the second flow channel enters the flow inlet cavity under the action of the negative pressure. Because at least part of the inflow cavity is positioned between the first connecting part and the suction inlet, the second fluid medium firstly enters the inflow cavity, so that the second fluid medium is firstly mixed with the air in the inflow cavity to be dispersed into a gas-liquid mixture, the pre-atomization of the second fluid medium is realized, the pre-atomized gas-liquid mixture enters the first flow channel through the suction inlet, and the first fluid medium in the first flow channel impacts the pre-atomized gas-liquid mixture, so that the pre-atomized gas-liquid mixture is further dispersed into atomized liquid drops. Therefore, the second fluid medium can be completely atomized through the pre-atomization step of the inflow cavity, and the atomization effect of the second fluid medium is improved.

Drawings

FIG. 1 is a schematic structural diagram of a spraying device according to an embodiment of the present application;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of the point B in FIG. 2;

FIG. 4 is an exploded view of the structure shown in FIG. 1;

FIG. 5 is a schematic view of the assembly of the spray device and the front support shown in FIG. 5;

fig. 6 is a schematic structural view of a laundry treating apparatus according to an embodiment of the present application;

fig. 7 is an enlarged schematic view at C in fig. 6, wherein the dashed arrows schematically show the flow direction of the first fluid medium.

Description of the reference numerals

An injection device 1; a body 100; the first flow path 100a; the suction port 100a'; a first connection 101; a branch pipe 200; the second flow path 11d;

a venturi channel 1a; an ejection outlet 1a'; a constriction 101a; a throat section 102a; an expansion segment 103a; a negative pressure flow passage 1b; a flow inlet chamber 1c; an inlet port 1c'; a positioning surface 1c "; a first position 1c' ″;

a housing 11; a mist outlet 11a; a joint 11b; a communication flow passage 11c; a supply port 11e; a recess 11f; a cover 111; a gas supply passage 111a; the placement grooves 111b; a main body 112; an open groove 112a; a cylindrical portion 1121;

an atomizing core 12; an inlet port 12a; a neck portion 121; an overflow channel 121a; a head 122; a tubular structure 123;

a seal ring 13;

a liquid reservoir 2;

an air pump 3;

a front support 4;

an outer tub 5;

a door seal 6;

Detailed Description

It should be noted that the embodiments and technical features of the embodiments in the present application may be combined with each other without conflict, and the detailed description in the detailed description should be understood as an explanation of the gist of the present application and should not be construed as an undue limitation to the present application.

In the present application embodiments, the "up", "down", "front", "back", "longitudinal" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 2, 6 and 7, it being understood that these orientation terms are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present application. The present application will now be described in further detail with reference to the accompanying drawings and specific examples.

Referring to fig. 1 and 6, an embodiment of the present application provides a spraying device 1 for a clothes treatment apparatus.

Referring to fig. 2 and 3, the spraying device 1 includes a body 100 and a branch pipe 200, the body 100 is formed with a flow inlet chamber 1c and a first flow passage 100a for flowing a first fluid medium, the first flow passage 100a is formed with a suction inlet 100a ', and the suction inlet 100a' communicates the flow inlet chamber 1c and the first flow passage 100a. Specifically, the first flow passage 100a can generate a negative pressure to suck the fluid in the inlet chamber 1c into the first flow passage 100a through the suction port 100 a'.

The branch pipe 200 is connected to the first connection 101 of the body 100, the branch pipe 200 is formed with a second flow passage 11d for flowing a second fluid medium, the second flow passage 11d communicates with a flow inlet chamber, and at least a portion of the flow inlet chamber is located between the first connection 101 and the suction port 100 a'.

It will be appreciated that both the first fluid medium and the second fluid medium are fluid. In the following description, the first fluid medium is exemplified as a gas, and the second fluid medium is exemplified as a liquid.

In the injection device 1 provided in the embodiment of the present application, the first flow channel 100a generates negative pressure, so that the second fluid medium in the second flow channel 11d enters the inlet chamber 1c under the action of the negative pressure. Because at least part of the inflow cavity 1c is located between the first connection part 101 and the suction opening 100a ', the second fluid medium firstly enters the inflow cavity 1c, so that the second fluid medium is firstly mixed with the air in the inflow cavity 1c to be dispersed into a gas-liquid mixture, so as to realize the pre-atomization of the second fluid medium, the pre-atomized gas-liquid mixture enters the first flow passage 100a through the suction opening 100a', and the first fluid medium in the first flow passage 100a impacts the pre-atomized gas-liquid mixture, so that the pre-atomized gas-liquid mixture is further dispersed into atomized liquid droplets. In this way, through the pre-atomization step of the inflow cavity 1c, the second fluid medium can be completely atomized, and the atomization effect of the second fluid medium is improved.

In one embodiment, referring to fig. 2 and 3, the first flow channel 100a includes a venturi flow channel 1a and a negative pressure flow channel 1b, the negative pressure flow channel 1b communicates the venturi flow channel 1a and the intake cavity 1c, the negative pressure flow channel 1b forms an intake port 100a ', the venturi flow channel 1a has an ejection outlet 1a ', and the intake cavity 1c has an intake port 1c ' for the second fluid medium to enter. The inlet 1c' is located at the first junction 101.

Illustratively, the venturi channel 1a is used for circulating gas. The inlet chamber 1c is used for flowing liquid. The negative pressure flow channel forms a suction opening 100a 'in a first position 1c' "of the inlet chamber, the inlet opening 1c 'being located upstream of the first position 1 c'" in the flow direction of the first fluid medium in the venturi flow channel 1a.

Illustratively, the first fluid medium flows along the venturi channel 1a to generate a negative pressure in the negative pressure channel 1b, and the second fluid medium enters the inflow chamber 1c through the inflow port 1c' under the negative pressure to be pre-atomized into a gas-liquid mixture. The gas-liquid mixture in the inlet chamber 1c enters the venturi flow passage 1a through the negative pressure flow passage 1b to generate mist-like droplets, which are ejected from the ejection outlet 1a'.

Here, a negative pressure is generated by the flow of the first fluid medium in the venturi channel 1a, so that the second fluid medium enters the inlet chamber 1c through the inlet 1c' under the effect of the negative pressure. That is, the second fluid medium is sucked by generating a negative pressure by the venturi effect of the venturi flow path 1a. Because the inlet 1c 'is located at the upstream of the negative pressure flow channel 1b along the flow direction of the first fluid medium in the venturi flow channel 1a, the second fluid medium enters the inlet chamber 1c through the inlet 1c' under the negative pressure generated by the venturi flow channel 1a, so that the second fluid medium is firstly mixed with the air in the inlet chamber 1c to be dispersed into a gas-liquid mixture, and the pre-atomization of the second fluid medium is realized, the pre-atomized gas-liquid mixture enters the venturi flow channel 1a through the negative pressure flow channel 1b, and the high-speed first fluid medium in the venturi flow channel 1a impacts the pre-atomized gas-liquid mixture, so that the pre-atomized gas-liquid mixture is further dispersed into a droplet fog shape. In this way, the second fluid medium can be completely atomized by the pre-atomization step of the inflow chamber 1c, and the atomization effect of the second fluid medium is improved.

It is understood that by mist-like droplets is meant that the second fluid medium is in the form of droplets of particles. Illustratively, the diameter of the atomized droplets may be no greater than 50 μm. This is only one example diameter of a mist of droplets.

Referring to fig. 2, 5 and 6, the laundry treating apparatus includes a laundry treating drum having a laundry treating chamber, a liquid reservoir 2 for containing a dry cleaning agent, an air pump 3, and the spraying device 1 in any embodiment of the present application, wherein an outlet of the liquid reservoir 2 is communicated with a second flow passage 11d, and an outlet of the air pump 3 is communicated with a first flow passage 100a.

The air pump 3 is for supplying a gas such as air to the venturi flow passage 1a. For example, the air pump 3 may pump high pressure first fluid medium into the venturi flow passage 1a to generate negative pressure in the venturi flow passage 1a.

The reservoir 2 is used to deliver dry cleaning agent to the inlet chamber 1c. For example, the second fluid medium in the reservoir 2 is sucked into the inlet chamber 1c by the negative pressure of the venturi flow channel 1a.

According to the clothes treatment equipment provided by the embodiment of the application, the air pump 3 pumps the first fluid medium into the Venturi flow channel 1a to generate negative pressure in the negative pressure flow channel 1b, and the dry cleaning agent in the liquid storage device 2 enters the flow inlet cavity 1c under the action of the negative pressure to generate a gas-liquid mixture through pre-atomization. The pre-atomized gas-liquid mixture enters the venturi flow passage 1a through the negative pressure flow passage 1b to generate mist dry cleaning agent, which is sprayed from the spray outlet 1a' into the laundry treatment chamber so as to contact the laundry. The atomized dry cleaning agent is sprayed into the clothes processing cavity, so that the clothes can be covered more completely, and the clothes can be cleaned more thoroughly.

When the existing spraying device is used for putting dry cleaning agent into a clothes treatment cavity, the dry cleaning agent can only be simply and softly scattered onto the surface of clothes, the dry cleaning agent is difficult to permeate into fibers of the clothes, and the decontamination efficiency is low.

And adopt the injection apparatus of this application, utilize the negative pressure impact dry cleaning agent that the venturi runner produced for dry cleaning agent is high-speed, high-energy vaporific spraying to the clothing on, so that dry cleaning agent can permeate to the fibre of clothing inside, improves scrubbing efficiency.

The laundry treating apparatus of the embodiment of the present application may provide a light dry cleaning function. The light dry cleaning function is a function of cleaning the laundry by introducing a mist dry cleaning agent which contacts the laundry. For example, before spraying mist dry cleaning agent, the clothes may be in a slightly wet or dry state, and the mist dry cleaning agent adheres to the clothes and contacts with stains such as pigments and the like on the clothes to achieve desorption and the like of the stains, thereby achieving cleaning of the clothes. Compared with the dry cleaning in the prior art, the light dry cleaning does not need to soak the clothes into a large amount of dry cleaning agent, so that the amount of the dry cleaning agent is less, and the environment-friendly effect is better.

The dry cleaning agent may be an organic solvent that is effective in removing stains under anhydrous or slightly hydrous conditions. The specific components of the dry cleaning agent are not limited, for example, the components of the dry cleaning agent include, but are not limited to, tetrachloroethylene, hydrocarbon solvent, and/or hydrocarbon solvent, and the like.

The specific type of the laundry treating apparatus is not limited, and the laundry treating apparatus includes, but is not limited to, a clothes drying apparatus, an air washing apparatus, or a washing and drying integrated apparatus, etc. by way of example. That is, in some embodiments, the laundry treatment drum may provide functions for laundry including, but not limited to, air washing, steam washing, or drying.

The air washing is a method of caring, removing wrinkles and removing odor of clothes by introducing mist air with certain temperature, humidity and pressure. The air wash may be used to care for garments of special materials such as down, wool, fur and the like.

In one embodiment, the laundry treating drum is rotatable. Therefore, in the process of rotating the clothes treatment drum, the clothes treatment drum drives the clothes in the clothes treatment cavity to move, and the clothes treatment efficiency is improved.

The rotation axis of the laundry treating drum may be in an inclined direction or a horizontal direction, etc.

Taking the rotation axis of the laundry treatment drum in the horizontal direction as an example, the laundry treatment chamber is opened toward the front, and the user puts or takes laundry into or out of the laundry treatment chamber from the front. In the rotation process of the clothes treatment drum, the clothes are driven to move from the lower part to the upper part; the laundry falls from above to below by gravity, so that the laundry is dispersed, beaten, and changed in posture by the combined action of the laundry treating drum and gravity.

In some embodiments, referring to fig. 6, the laundry treating apparatus further includes an outer tub 5 sleeved outside the laundry treating drum. The outer tub 5 may be kept still, so as to be externally connected with a structure such as a pipeline required to be communicated with the laundry treating chamber.

It should be noted that front refers to the side facing the user, and back refers to the side facing away from the user opposite to the front.

The specific installation position of the spraying device 1 is not limited, and in an exemplary embodiment, referring to fig. 5 to 6, the laundry treating apparatus includes a front support 4, the front support 4 is disposed at the front end of the laundry treating drum, and the liquid reservoir 2, the air pump 3 and the spraying device 1 are disposed on the front support 4. On one hand, the front support 4 has good structural strength and more mounting areas, the front support 4 is utilized to provide mounting positions for the liquid storage device 2, the air pump 3 and the injection device 1, and devices such as the liquid storage device 2, the air pump 3 and the injection device 1 are prevented from influencing the mounting of other devices such as a motor. On the other hand, it is also convenient for the user to add a dry cleaning agent to the reservoir 2.

In an exemplary embodiment, referring to fig. 6, the laundry treating apparatus includes a door seal 6 disposed at a front end of the tub 5, the front support 4 is formed with a laundry input port communicating with the laundry treating chamber, and the door seal 6 seals a gap between the laundry input port and a front opening of the tub 5.

In one embodiment, referring to fig. 5, the injection device 1 is located at an upper portion of the front support 4. The mist of dry cleaning agent from the spray outlet 1a' can fall in a parabolic shape under the action of its initial velocity and gravity, so that the mist of dry cleaning agent is more dispersed to contact the laundry at each corner of the laundry treatment chamber.

In one embodiment, referring to fig. 5, the liquid reservoir 2 and the air pump 3 are both located at a lower portion of the front support 4. That is, the reservoir 2 and the air pump 3 are located substantially below the ejector 1, so that the center of gravity of the overall structure is low, and vibration and noise of the overall structure can be reduced.

In one embodiment, referring to fig. 2 and 3, the venturi channel 1a includes a constriction 101a and a throat section 102a, and a flow cross-sectional area of a first end of the constriction 101a is larger than a flow cross-sectional area of a second end of the constriction 101a along a flow direction of the first fluid medium, and the second end of the constriction 101a communicates with the first end of the throat section 102a. Illustratively, the flow cross-sectional area of the second end of the constriction 101a is equal to the flow cross-sectional area of the throat section 102a.

Here, the first fluid medium flows through constriction 101a and then through throat section 102a. Specifically, the first fluid medium flows through the first end of the constriction 101a and then through the second end of the constriction 101a into the throat section 102a. Because the flow cross-sectional area of the first end of the constriction section 101a is larger than that of the second end of the constriction section 101a, the first fluid medium enters the throat section 102a after accelerated pressure reduction through the constriction section 101a, the flow rate of the first fluid medium in the throat section 102a is larger than that of the first fluid medium at the first end of the constriction section 101a, the air pressure of the first fluid medium in the throat section 102a is smaller than that of water flow in the constriction section 101a, and the air pressure around the outlet of the throat section 102a is smaller, so that negative pressure is generated in the negative pressure flow channel 1b, and the gas-liquid mixture in the inlet cavity 1c is driven to enter the venturi flow channel 1a through the negative pressure flow channel 1 b.

It should be noted that the flow cross-section is a cross-section orthogonal to all flow lines of the flow stream or total flow, i.e. perpendicular to the flow velocity cluster, e.g. the first fluid medium or flow. When the streamline clusters are not parallel to each other, the overflowing section is a curved surface; when the stream line clusters are mutually parallel straight lines, the flow cross section is a plane.

In one embodiment, referring to fig. 2 and 3, the flow cross-sectional area of the constriction 101a decreases from the first end to the second end in the flow direction of the first fluid medium. In this way, the flow velocity of the first fluid medium in the constriction section 101a gradually increases and the gas pressure gradually decreases, and the gas pressure has a continuous variation trend, so that the turbulence of the first fluid medium can be reduced.

In one embodiment, referring to fig. 2 and 3, the flow cross-sectional area at any position of the throat section 102a is equal. The first fluid medium which is subjected to speed increasing and pressure reduction by the contraction section 101a enters the throat section 102a, the first fluid medium can flow in the throat section 102a more stably, and the throat section 102a plays a role in rectification, so that the first fluid medium can flow stably at a higher flow speed and a lower air pressure.

In one embodiment, referring to fig. 2 and 3, the inlet 1c' is located upstream of the constriction 101a in the flow direction of the first fluid medium. In this way, the distance between the inlet 1c 'and the throat section 102a is relatively large, so that the second fluid medium, for example a dry cleaning agent, from the inlet 1c' can be sufficiently preatomised with the air in the inlet chamber 1c.

In one embodiment, referring to fig. 2 and 3, the venturi channel 1a includes a diverging section 103a, a flow cross-sectional area of a first end of the diverging section 103a is smaller than a flow cross-sectional area of a second end of the diverging section 103a along a flow direction of the first fluid medium, the first end of the diverging section 103a communicates with a second end of the throat section 102a, and the second end of the diverging section 103a forms the injection outlet 1a'. Illustratively, the flow cross-sectional area of the second end of the diverging section 103a is less than or equal to the flow cross-sectional area of the throat section 102a. In this way, the area of the spray outlet 1a 'is larger than the flow cross-sectional area of the throat section 102a, so that mist liquid droplets, such as mist dry cleaning agent, can be sprayed out of the spray outlet 1a' in a divergent manner, such as in a waterfall or cone manner.

In one embodiment, referring to fig. 2 and 3, the flow cross-sectional area of the expanding section 103a gradually increases from the first end to the second end along the flowing direction of the first fluid medium. In this manner, the mist-like droplets such as the mist-like dry cleaning agent in the expanding section 103a can be pressurized more stably, reducing turbulence and pressure loss.

In some embodiments, referring to fig. 3, one end of the negative pressure flow channel 1b is connected to the throat section 102a downstream along the flow direction of the first fluid medium. Illustratively, in one embodiment, one end of the negative pressure flow passage 1b communicates with the outer peripheral portion of the first end of the expansion section 103 a. In this manner, the flow velocity downstream of the throat section 102a in the direction of flow of the first fluid medium is relatively faster and the gas pressure is less so as to generate a greater negative pressure.

In some embodiments, referring to fig. 2 and 3, the venturi channel 1a and the negative pressure channel 1b are both located in the inlet chamber 1c. In this way, the structure of the injection device 1 is more compact.

In an exemplary embodiment, referring to fig. 1 to 4, the body 100 includes a housing 11 and an atomizing core 12, the housing 11 is formed with an inlet chamber 1c and a mist outlet 11a communicated with the inlet chamber 1c, the atomizing core 12 is accommodated in the inlet chamber 1c, the atomizing core 12 is formed with a first flow channel 100a and a spray outlet 1a 'communicated with the first flow channel 100a, and the spray outlet 1a' is communicated with the mist outlet 11a. Specifically, the mist of dry cleaning agent from the spray outlet 1a' is sprayed out of the spray device 1 through the mist outlet 11a. Illustratively, the housing 11 and the atomizing core 12 may be manufactured separately to reduce manufacturing difficulties. The atomizing core 12 is accommodated in the flow inlet chamber 1c, so that the overall structure of the injection device 1 is compact and the overall size is small.

In one embodiment, referring to fig. 2 to 4, the venturi channel 1a and the inlet chamber 1c extend along the longitudinal direction, the first connection portion 101 is located on the circumferential surface of the inlet chamber 1c, the mist outlet 11a is formed on one side surface of the housing 11 along the longitudinal direction, the spray outlet 1a' is formed on the surface of the atomizing core 12 facing the mist outlet 11a, and the negative pressure channel 1b penetrates through the circumferential wall of the atomizing core 12 from the venturi channel 1a to communicate with the inlet chamber 1c. Specifically, the inlet port 1c' is located on a side of the negative pressure flow passage 1b that is away from the mist outlet port 11a in the longitudinal direction. By such design, the size of the venturi channel 1a and the inlet chamber 1c in the longitudinal direction can be small, so that the size of the whole injection device 1 in the longitudinal direction can be small, and the installation space occupied by the injection device 1 can be reduced.

In an embodiment, referring to fig. 2 to 3, the number of the negative pressure flow channels 1b is multiple, and the multiple negative pressure flow channels 1b are arranged at intervals along the circumference of the atomizing core 12. Illustratively, the number of the negative pressure flow passages 1b is 4, and the 4 negative pressure flow passages 1b are uniformly arranged at intervals in the circumferential direction of the atomizing core 12. Thus, the plurality of negative pressure flow passages 1b not only facilitate the gas-liquid mixture in the inlet chamber 1c to enter the venturi flow passage 1a in a larger amount to improve the spraying amount, but also avoid the situation that the blockage of any one negative pressure flow passage 1b causes the incapability of spraying.

In the embodiments of the present application, the plurality of the numbers includes two and more than two.

In one embodiment, referring to fig. 1 to 4, the housing 11 is formed with a joint 11b and a communication flow passage 11c, the communication flow passage 11c communicates the venturi flow passage 1a and the joint 11b, and an extending direction of the joint 11b intersects an extending direction of the venturi flow passage 1a. Specifically, the joint 11b is used to externally connect a ventilation line. Such as the vent line communication fitting 11b and the outlet of the air pump 3. Illustratively, the connector 11b extends in a horizontal direction, which facilitates the communication of the vent line with the connector 11 b. Illustratively, the extending direction of the venturi flow channel 1a is inclined in the up-down direction, that is, the extending direction of the venturi flow channel 1a forms an angle greater than 0 ° with the horizontal direction. In other words, the spray outlet 1a' is inclined toward the laundry treating chamber. In this way, the spraying direction of the mist of dry cleaning agent from the spray outlet 1a' can be changed, so that the mist of dry cleaning agent is sprayed directly toward the laundry in the laundry treatment chamber, facilitating the mist of dry cleaning agent to adhere directly to the laundry.

In one embodiment, referring to fig. 1 to 4, the branch pipe 200 is located on the concave side of the bent structure formed by the joint 11b and the inlet cavity 1c. In particular, the branch pipe 200 is used for externally connecting the liquid line. For example, a liquid communication line communicates the branch pipe 200 and the outlet of the reservoir 2. The bending structure formed by the joint 11b and the inflow cavity 1c has an included angle smaller than 180 degrees, and the included angle smaller than 180 degrees is the concave side of the bending structure. Illustratively, the joint 11b extends along the horizontal direction, the flow inlet cavity 1c extends downwards, the lower included angle of the bent structure formed by the joint 11b and the flow inlet cavity 1c is a concave side, and the joint 11b is located in the empty space of the concave side. Thus, the branch pipe 200 is provided in the empty space of the concave side, and the entire structure of the injection device 1 is more compact.

In one embodiment, referring to fig. 2 to 4, the spraying device 1 includes a sealing ring 13, the housing 11 is formed with a supply port 11e, the atomizing core 12 is formed with an inlet port 12a communicated with the first flow channel 100a, the inlet port 12a is in butt communication with the supply port 11e, and the sealing ring 13 is sealingly clamped between a peripheral portion of the supply port 11e and a peripheral portion of the inlet port 12 a. Illustratively, the downstream port of the communication flow channel 11c in the first fluid medium flow direction is the supply port 11e. Since the gas pressure of the gas from the supply port 11e is relatively high, the high-pressure fluid easily leaks from the fitting gap between the peripheral portion of the supply port 11e and the peripheral portion of the inlet port 12a, so that it is difficult to generate a negative pressure in the venturi flow passage 1a, and therefore, the fitting gap between the peripheral portion of the supply port 11e and the peripheral portion of the inlet port 12a is sealed by the seal ring 13, and gas leakage therefrom is prevented.

In an exemplary embodiment, referring to fig. 2, a groove 11f surrounding the inlet 11e is formed around the inlet 11e, the sealing ring 13 is accommodated in the groove 11f, the inlet 12a is formed around the tubular structure 123, and the tubular structure 123 is inserted into the groove 11f and abuts against the sealing ring 13. For example, the inlet port 12a is formed on the surface of the atomizing core 12 that is away from the ejection outlet 1a' in the longitudinal direction, and the seal ring 13 is sealingly interposed between the groove surface of the groove 11f in the longitudinal direction and the surface of the tubular structure 123 in the longitudinal direction, or the seal ring 13 is interposed between the circumferential surface of the groove 11f and the circumferential surface of the tubular structure 123. The groove 11f facilitates the positioning and installation of the sealing ring 13 and avoids the displacement of the sealing ring 13.

In one embodiment, referring to fig. 2 and 4, the housing 11 includes a cover 111 and a main body 112, the main body 112 forms an opening groove 112a opening toward the second longitudinal end, the cover 111 covers the opening of the opening groove 112a to define the flow inlet chamber 1c, and the surface of the second longitudinal end of the cover 111 forms the mist outlet 11a. Therefore, the atomizing core 12 can be assembled into the opening groove 112a through the opening of the opening groove 112a, and the housing 111 covers the opening of the opening groove 112a to complete the assembly of the housing 11 and the atomizing core 12.

In one embodiment, referring to fig. 2 and 4, the atomizing core 12 is detachably disposed in the flow inlet chamber 1c, and the cover 111 detachably covers the opening of the opening slot 112 a. In this way, when maintenance such as cleaning or replacement of the atomizing core 12 is required, the atomizing core 12 can be taken out for maintenance such as cleaning or replacement without breaking the housing 11.

In one embodiment, referring to fig. 2, 4 and 7, the cover 111 is screwed to the main body 112, a gas supply passage 111a is formed at the screw thread matching position of the cover 111 and the main body 112, and the gas supply passage 111a is communicated with the inlet chamber 1c. Specifically, the air supply passage 111a communicates the inflow chamber 1c and the outside atmosphere. On one hand, the cover 111 and the main body 112 are in threaded connection, so that the cover 111 can be assembled and disassembled quickly, and the operation is simple. On the other hand, the formation of the air supply passage 111a at the screw-threaded engagement of the cover 111 and the main body 112 means that there is a gap in the screw-threaded engagement of the cover 111 and the main body 112, which is the air supply passage 111a. Air from the outside atmosphere can enter the inlet chamber 1c through the air supply channel 111a, so that a continuous pre-atomization of the second fluid medium, for example a dry cleaning agent, in the inlet chamber 1c is achieved.

It will be understood that the external air can enter the inlet chamber 1c through the air make-up passage 111a, and the second fluid medium and/or the gas-liquid mixture in the inlet chamber 1c cannot flow out to the outside through the air make-up passage 111a. Specifically, the second fluid medium and/or the gas-liquid mixture in the inflow chamber 1c cannot flow out to the outside under the surface tension of the liquid substance.

In one embodiment, referring to fig. 2, the housing 111 is formed with a placement groove 111b opened toward the first longitudinal end, and the open slot 112a and the placement groove 111b together form a flow inlet chamber 1c. A part of the atomizing core 12 is located in the open groove 112a, and another part of the atomizing core 12 is located in the placement groove 111 b.

In one embodiment, referring to fig. 2 and 4, the main body 112 includes a cylindrical portion 1121, a joint 11b, and a branch pipe 200, the cylindrical portion 1121 extends in a longitudinal direction, the cylindrical portion 1121 is formed with an opening groove 112a and a communication flow passage 11c, and the opening groove 112a is located downstream of the communication flow passage 11c in a flow direction of the first fluid medium. The inlet 1c' is positioned on the cylinder 1121, the joint 11b and the branch pipe 200 extend in parallel, and the cylinder 1121, the joint 11b and the branch pipe 200 are integrally formed. Thus, the structural strength is good and the number of assembly steps can be reduced.

For example, in an embodiment, referring to fig. 5 to 7, the tube portion 1121 is disposed through the front support 4, and the joint 11b and the branch tube 200 are located on a side of the front support 4 away from the outer tub 5. In this way, not only the connection of the joint 11b and the branch pipe 200, but also the introduction of the mist of dry cleaning agent sprayed from the spray outlet 1a' and the mist outlet 11a into the laundry treatment chamber is facilitated.

In an embodiment, referring to fig. 2 and 7, an internal thread is formed at an opening of the opening groove 112a of the tube portion 1121, and an external thread is formed at an opening of the placement groove 111b of the housing 111. The internal and external threads are threadedly engaged to enable detachable connection of the cover 111 and the body 112.

In one embodiment, referring to fig. 2 to 3, a positioning surface 1c surrounding the mist outlet 11a is formed on a cavity surface of a second end of the flow inlet cavity 1c along the longitudinal direction, and a peripheral portion of the spray outlet 1a' abuts against the positioning surface 1c ″. Illustratively, the mist outlet 11a is formed on a surface of a second end of the housing 111 in the longitudinal direction, the mist outlet 11a communicates with the placement groove 111b, and the positioning surface 1c ″ is formed on a groove surface of the second end of the placement groove 111b in the longitudinal direction. In this way, the ejection outlet 1a' and the mist outlet 11a are in butt communication. For example, the atomizing core 12 may be first placed in the open groove 112a, and then the housing 111 may be screwed to the main body 112, for example, the cylindrical portion 1121. In this way, the atomizing core 12 is clamped between the surface of the first end of the opening groove 112a in the longitudinal direction and the end surface of the second end of the placement groove 111b in the longitudinal direction, the assembly of the spray device 1 is completed, and the assembly is simple.

It can be understood that since the atomized dry cleaning agent is sprayed from the spray outlet 1a 'and the mist outlet 11a at a certain initial velocity, the atomized dry cleaning agent or air around the mist outlet 11a does not substantially enter the inlet chamber 1c through the gap between the peripheral portion of the spray outlet 1a' and the positioning surface 1c ″. That is, no sealing structure may be provided between the surrounding portion of the injection outlet 1a' and the positioning surface 1c ″. Therefore, the structure can be simplified, and the cost is saved. Of course, a seal structure may be provided between the surrounding portion of the ejection outlet 1a' and the positioning surface 1c ″.

In one embodiment, referring to fig. 2-4, the atomizing core 12 includes a neck portion 121 having a flow channel 121a and a head portion 122 having a first flow channel 100a. The neck 121 is located at the side of the head 122 close to the manifold 200, i.e. the neck 121 is located upstream of the head 122 in the flow direction of the first fluid medium. The distance between the outer peripheral surface of the neck portion 121 and the circumferential surface of the inlet chamber 1c is greater than the distance between the outer peripheral surface of the head portion 122 and the circumferential surface of the inlet chamber 1c, and the inlet 1c' is located at a portion of the inlet chamber 1c corresponding to the neck portion 121. Specifically, the transfer flow passage 121a communicates with a first end of the venturi flow passage 1a, for example, a constricted portion.

Here, the second fluid medium of the inlet 1c' first enters the space between the outer circumferential surface of the neck 121 and the circumferential surface of the inlet chamber 1c, and since the distance between the outer circumferential surface of the neck 121 and the circumferential surface of the inlet chamber 1c is relatively large, the space between the outer circumferential surface of the neck 121 and the circumferential surface of the inlet chamber 1c is larger, so as to provide a larger volume for mixing of the second fluid medium with air for better pre-atomization.

In order to control the flow rate of the gas-liquid mixture entering the venturi channel 1a, the flow cross-sectional area of the negative pressure channel 1b may be adjusted, which may further increase the difficulty of manufacturing the atomizing core 12, and reduce the yield of the atomizing core 12. In this embodiment, the distance between the outer peripheral surface of the head portion 122 and the circumferential surface of the inflow chamber 1c is relatively small, so that the flow rate of the gas-liquid mixture can be regulated, and compared with the regulation of the flow cross-sectional area of the negative pressure flow channel 1b, the manufacturing process is simpler and the product yield is higher.

In one embodiment, the atomizing core 12 is made of metal. Because there is the heating stage in the clothing processing apparatus stoving or air washing process, atomizing core 12 not only can receive the influence of temperature variation, atomizing core 12 contacts high-speed first fluid medium and dry cleaning agent for a long time, also receives the erosion of above-mentioned two kinds of materials easily, consequently, atomizing core 12 is the metal material, is favorable to improving atomizing core 12 structural dimension's stability under the condition such as temperature variation and above-mentioned two kinds of material erosion, not only can prolong atomizing core 12's life, can also improve injection apparatus 1's atomization effect.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (17)

1. A spraying device for a laundry treatment apparatus, comprising:

a body (100) which is provided with a flow inlet cavity (1 c) and a first flow channel (100 a) for flowing a first fluid medium, wherein the first flow channel (100 a) is provided with a suction inlet (100 a '), and the suction inlet (100 a') is communicated with the flow inlet cavity (1 c) and the first flow channel (100 a);

a branch pipe (200) connected to the first connection (101) of the body (100), wherein the branch pipe (200) is formed with a second flow passage (11 d) for flowing a second fluid medium, the second flow passage (11 d) is communicated with the inlet cavity (1 c), and at least part of the inlet cavity (1 c) is positioned between the first connection (101) and the inlet (100 a').

2. The ejector device according to claim 1, wherein the first flow passage (100 a) includes a venturi flow passage (1 a) and a negative pressure flow passage (1 b), the negative pressure flow passage (1 b) communicates the venturi flow passage (1 a) and the intake chamber (1 c), the negative pressure flow passage (1 b) is formed with the intake port (100 a '), the venturi flow passage (1 a) has an ejection outlet (1 a'), the intake chamber (1 c) has an intake port (1 c ') for a second fluid medium, and the intake port (1 c') is located at the first connection (101).

3. A spraying device according to claim 2, characterized in that the venturi channel (1 a) comprises a constriction (101 a) and a throat section (102 a), the flow cross-sectional area of a first end of the constriction (101 a) being larger than the flow cross-sectional area of a second end of the constriction (101 a) in the flow direction of the first fluid medium, the second end of the constriction (101 a) communicating with the first end of the throat section (102 a).

4. A spraying device according to claim 3, characterized in that the inlet opening (1 c') is located upstream of the constriction (101 a) in the flow direction of the first fluid medium.

5. A spraying device according to claim 3, characterized in that the venturi channel (1 a) comprises a divergent section (103 a), the flow cross-sectional area of a first end of the divergent section (103 a) being smaller than the flow cross-sectional area of a second end of the divergent section (103 a) in the flow direction of the first fluid medium, the first end of the divergent section (103 a) communicating with the second end of the throat section (102 a), the second end of the divergent section (103 a) forming the spraying outlet (1 a').

6. The spray device according to claim 1, characterized in that the body (100) comprises a housing (11) and an atomizing core (12), the housing (11) is formed with the inlet chamber (1 c) and a mist outlet (11 a) communicating with the inlet chamber (1 c), the atomizing core (12) is accommodated in the inlet chamber (1 c), the atomizing core (12) is formed with the first flow passage (100 a) and a spray outlet (1 a ') communicating with the first flow passage (100 a), and the spray outlet (1 a') communicates with the mist outlet (11 a).

7. The ejector device according to claim 6, wherein the first flow passage (100 a) includes a venturi flow passage (1 a) and a negative pressure flow passage (1 b), the negative pressure flow passage (1 b) communicates the venturi flow passage (1 a) and the intake chamber (1 c), the negative pressure flow passage (1 b) is formed with the suction port (100 a '), the venturi flow passage (1 a) and the intake chamber (1 c) each extend in a longitudinal direction, the first connection (101) is located on a circumferential face of the intake chamber (1 c), the mist outlet port (11 a) is formed on a side surface of the housing (11) in the longitudinal direction, the ejection outlet port (1 a') is formed on a surface of the atomizing core (12) facing the mist outlet port (11 a), and the negative pressure flow passage (1 b) penetrates a circumferential wall of the atomizing core (12) from where the venturi flow passage (1 a) is located to communicate with the intake chamber (1 c).

8. The ejector device according to claim 7, wherein the negative pressure flow passage (1 b) is plural in number, and the plural negative pressure flow passages (1 b) are arranged at intervals in a circumferential direction of the atomizing core (12).

9. The ejector device according to claim 7, wherein the housing (11) is formed with a joint (11 b) and a communication flow passage (11 c), the communication flow passage (11 c) communicating the venturi flow passage (1 a) and the joint (11 b), an extending direction of the joint (11 b) intersecting an extending direction of the venturi flow passage (1 a).

10. Spraying device according to claim 9, characterized in that the branch pipe (200) is located on the concave side of the bend structure formed by the joint (11 b) and the inlet chamber (1 c).

11. The spraying device according to claim 6, characterized in that the spraying device (1) comprises a sealing ring (13), the housing (11) is formed with an inlet port (11 e), the atomizing core (12) is formed with an inlet port (12 a) communicating with the first flow channel (100 a), the inlet port (12 a) and the inlet port (11 e) are in butt communication, and the sealing ring (13) is sealingly interposed between a peripheral portion of the inlet port (11 e) and a peripheral portion of the inlet port (12 a).

12. The ejector device according to claim 6, wherein the housing (11) includes a cover piece (111) and a main body (112), the main body (112) is formed with an open groove (112 a) that opens toward a second end in the longitudinal direction, the cover piece (111) covers an opening of the open groove (112 a) to define the inflow chamber (1 c), and a surface of the second end in the longitudinal direction of the cover piece (111) is formed with the mist outlet (11 a).

13. The spraying device according to claim 12, characterized in that the atomizing core (12) is detachably disposed in the inlet chamber (1 c), and the cover (111) detachably covers the opening of the open groove (112 a).

14. The spraying device according to claim 12, characterized in that the cover piece (111) and the main body (112) are connected by screw threads, and a gas supplementing channel (111 a) is formed at the screw thread matching position of the cover piece (111) and the main body (112), and the gas supplementing channel (111 a) is communicated with the inlet cavity (1 c).

15. The spray device according to claim 6, characterized in that the atomizing core (12) comprises a neck portion (121) having a flow passage (121 a) and a head portion (122) having the first flow passage (100 a), the neck portion (121) is located on a side of the head portion (122) close to the branch pipe (200), a distance between an outer circumferential surface of the neck portion (121) and a circumferential surface of the flow inlet chamber (1 c) is larger than a distance between an outer circumferential surface of the head portion (122) and a circumferential surface of the flow inlet chamber (1 c), and the first connection (101) is located at a portion of the flow inlet chamber (1 c) corresponding to the neck portion (121).

16. A laundry treating apparatus, comprising:

a laundry treating drum having a laundry treating chamber;

a reservoir (2) for containing a dry cleaning agent;

an air pump (3);

the ejector (1) according to any of claims 1 to 15, wherein an outlet of the reservoir (2) communicates with the second flow path (11 d), and an outlet of the air pump (3) communicates with the first flow path (100 a).

17. Laundry treatment apparatus according to claim 16, characterized in that it comprises a front support (4), said front support (4) being arranged at the front end of the laundry drum, said liquid reservoir (2), said air pump (3) and said spraying means (1) being arranged on said front support (4).

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