CN109519906B

CN109519906B - Steam generator and household appliance

Info

Publication number: CN109519906B
Application number: CN201811553344.XA
Authority: CN
Inventors: 王宏宇; 杨星星; 严喻; 焦旭薇
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2021-03-19
Anticipated expiration: 2038-12-18
Also published as: CN109519906A

Abstract

The invention discloses a steam generator and a household appliance, wherein the steam generator comprises a steam generating box and a flow dividing piece, wherein a steam generating channel is arranged in the steam generating box, the steam generating box is provided with a water inlet end and a steam outlet end, and the steam generating channel is communicated with the water inlet end and the steam outlet end; the flow dividing piece is arranged in the steam generating channel and is provided with a first flow guiding surface and a second flow guiding surface adjacent to or opposite to the first flow guiding surface, a first variable flow gap is formed between the first flow guiding surface and the inner wall of the steam generating channel at interval, a second variable flow gap is formed between the second flow guiding surface and the inner wall of the steam generating channel at interval, and the flow velocity of the fluid flowing through the first variable flow gap is greater than that of the fluid flowing through the second variable flow gap. The technical scheme of the invention reduces the influence of water scale on the steam generator and prolongs the service life of the steam generator.

Description

Steam generator and household appliance

Technical Field

The invention relates to the technical field of household appliances, in particular to a steam generator and a household appliance.

Background

Along with the continuous development of science and technology, people also become higher and higher to domestic appliance's functional requirement, for example domestic appliance such as integrated kitchen, smoking machine, sterilizer, microwave oven need possess the steam function to reach effects such as steam cleaning, steam disinfection. The core component of such household appliances that perform a steaming function is a steam generator, which heats and vaporizes water. However, because of the poor water quality in most areas in China, the steam generator is easy to generate scale in the working process, and when the scale is accumulated to a certain degree, the defects that the steam generator fails to work, the service life is greatly shortened and the like are caused.

Disclosure of Invention

The invention mainly aims to provide a steam generator, aiming at reducing the influence of scale on the steam generator so as to prolong the service life of the steam generator.

To achieve the above object, the present invention provides a steam generator including:

the steam generating box is internally provided with a steam generating channel, the steam generating box is provided with a water inlet end and a steam outlet end, and the steam generating channel is communicated with the water inlet end and the steam outlet end; and

the flow dividing piece is arranged in the steam generating channel and provided with a first flow guiding surface and a second flow guiding surface adjacent to or opposite to the first flow guiding surface, a first variable flow gap is formed between the first flow guiding surface and the inner wall of the steam generating channel at intervals, a second variable flow gap is formed between the second flow guiding surface and the inner wall of the steam generating channel at intervals, and the flow velocity of fluid flowing through the first variable flow gap is greater than that of fluid flowing through the second variable flow gap.

Preferably, the flow dividing piece is provided with the bottom of the steam generation channel, the first flow guide surface and the second flow guide surface are oppositely arranged, and the first flow guide surface and the second flow guide surface extend along the extension direction of the steam generation channel.

Preferably, the first flow guiding surface has a convex speed increasing portion, so that the flow velocity of the fluid flowing through the speed increasing portion in the first variable flow gap is increased; and/or the presence of a gas in the gas,

the inner wall of the steam generation channel facing the first flow guide surface is provided with a speed increasing bulge, so that the flow velocity of fluid flowing through the speed increasing bulge in the first variable flow gap is increased.

Preferably, the protruding height of the speed increasing part is arranged to increase firstly and then decrease along the extending direction of the steam generating channel;

the protruding height of the speed-increasing protrusion is increased firstly and then reduced along the extending direction of the steam generation channel.

Preferably, a speed increasing protrusion is arranged on an inner wall of the steam generating channel facing the first flow guide surface, so that the flow velocity of the fluid flowing through the speed increasing protrusion in the first variable flow gap is increased;

the first flow guide surface is provided with a concave part corresponding to the position of the speed increasing bulge.

Preferably, the top of the flow divider is spaced apart from the top of the steam generation channel.

Preferably, the bottom of the steam generation channel is provided with a speed increasing bulge, and the flow dividing piece is arranged on the surface of the speed increasing bulge.

Preferably, the protruding height of the speed-increasing protrusion is increased and then decreased along the extending direction of the steam generation channel, and the bottom of the flow dividing piece is connected with the top of the speed-increasing protrusion;

a third variable flow gap is formed at the bottom of the flow dividing piece along the extending direction of the steam generating channel; and/or

Two ends of the bottom of the flow dividing piece and the surface of the speed increasing bulge form a turbulent flow space.

Preferably, the steam generating cartridge includes:

the box body is provided with a box cavity and an opening arranged on the upper side of the box body, the opening is communicated with the box cavity, and the water inlet end and the steam outlet end are respectively formed at two opposite ends of the box body;

the box cover is arranged on the opening in a sealing way, so that the box cavity forms the steam generation channel;

the shunt piece is located the box intracavity, and locates the bottom in box chamber.

The present invention also proposes a household appliance comprising a steam generator comprising:

According to the technical scheme, the flow dividing piece is arranged, so that the flow rates of the fluid at the first variable flow gap and the second variable flow gap are different, two flow layers with different flow rates are formed by the fluid in the steam generation channel, the solid particles in the fluid can be reduced from depositing on the inner side wall of the steam generation channel to form scale, the influence of the scale on the steam generator is reduced, the risk probability of using faults of the steam generator is reduced, and meanwhile, the service life of the steam generator is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a steam generator according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an embodiment of a cartridge of the steam generator of FIG. 1;

FIG. 3 is a schematic view of the case of FIG. 2 from another perspective;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic view illustrating an internal structure of another embodiment of the steam generator of FIG. 1;

FIG. 6 is a schematic view of a cartridge in another embodiment of the steam generator of FIG. 1;

FIG. 7 is a schematic view of the internal structure of the case of FIG. 6;

FIG. 8 is a schematic view of the case of FIG. 2 with baffles;

FIG. 9 is a schematic structural view of another embodiment of a front baffle within the enclosure of FIG. 8;

FIG. 10 is a schematic structural view of another embodiment of a tailgate within the enclosure of FIG. 8;

FIG. 11 is a schematic structural view of yet another embodiment of the front baffle of FIG. 10;

FIG. 12 is a schematic structural view of yet another embodiment of the tailgate of FIG. 8;

FIG. 13 is a schematic view of the cartridge of FIG. 9 with a shunt disposed therein;

FIG. 14 is a top view of the cassette of FIG. 13;

FIG. 15 is a schematic structural view of another embodiment of the shunt member of FIG. 9;

FIG. 16 is a schematic view of the internal structure of the cartridge of FIG. 14;

FIG. 17 is a schematic view of the divider member of FIG. 13 shown in connection with a speed increasing protrusion;

FIG. 18 is a schematic view of the cartridge of FIG. 8 with a diverter plate disposed therein;

FIG. 19 is a top view of the cassette of FIG. 18;

FIG. 20 is a schematic view of the flow divider of FIG. 18 shown in connection with the speed increasing protrusions;

FIG. 21 is a schematic structural view of another embodiment of the flow distribution plate of FIG. 18;

fig. 22 is a schematic structural view of another embodiment of the flow distribution plate of fig. 18.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a steam generator and a household appliance, wherein the household appliance generally refers to a household appliance with a steam function, such as an integrated stove, a range hood, a disinfection cabinet, a microwave oven, a garment steamer and the like. The steam generator is a steam component of the household appliance and can heat and vaporize water to form water steam. The structural improvement of the steam generator will be explained in detail as follows:

in an embodiment of the present invention, referring to fig. 1 to 7, the steam generator 1 includes:

the steam generating box 10 is internally provided with a steam generating channel 100, the steam generating box 10 is also provided with a water inlet end 110 and a steam outlet end 120, and the steam generating channel 100 is communicated with the water inlet end 110 and the steam outlet end 120; and

and a speed increasing member 20 provided on an inner wall of the steam generation passage 100 to increase a flow velocity of the fluid passing through the speed increasing member 20.

Specifically, for the steam generating box 10, the water inlet end 110 is provided with a water inlet 111 communicated with the steam generating channel 100, the steam outlet end 120 is provided with a steam outlet 121, and the steam generating box 10 is provided with the heating member 30. External water can enter the steam generation channel 100 from the water inlet 111, and the heating element 30 heats the water in the steam generation channel 100, so that the water is heated and vaporized to generate steam, and the steam is discharged through the steam outlet 121. Wherein, the heating element 30 is generally installed in the wall of the steam generating box 10, and after the heating element 30 is electrically heated, the temperature of the wall of the steam generating box 10 can be raised, so as to heat and vaporize the water in the steam generating channel 100, and the heating element 30 can be preferably a U-shaped heating tube, so as to increase the heating area and improve the heating effect; the metal material has the advantages of heat resistance, fire resistance and good heat conductivity, and the steam generating box 10 is preferably made of the metal material, and the aluminum material has low price and is easy to process and form, and further the steam generating box 10 is preferably made of the aluminum material.

When the heating element 30 heats the water in the steam generating channel 100, the fluid in the steam generating channel 100 includes water and water vapor; after the steam generator 1 is operated for a period of time, solid particles are gradually generated in the water due to the factor of water quality in the heating and vaporizing process, and then the fluid in the steam generating channel 100 is a mixture of water, steam and fixed particles.

The fixed particles accumulate in the steam generating channel 100 over time to form scale, which, on the one hand, affects the fluid flow and, on the other hand, also causes a reduction in the efficiency of the water heating by the inner walls of the steam generating channel 100. In order to avoid the formation of large scale on the inner wall of the steam generation channel 100, the present embodiment improves the internal flow channel structure of the steam generation channel 100, so that the scale is accumulated at a suitable position in the steam generation channel 100, the formation of large scale in the steam generation channel 100 is avoided, and the heating efficiency of the inner wall of the steam generation channel 100 on water is ensured.

In the present embodiment, by providing the speed increasing member 20 on the inner wall of the steam generating channel 100, the flow velocity of the fluid passing through the speed increasing member 20 is increased, so that the formation of scale on the inner wall near the speed increasing member 20 is avoided, and the heating effect at the position of the speed increasing member 20 is ensured. Therefore, the position of scale accumulation can be controlled conveniently, so that the influence of the scale on the steam generator 1 is reduced, the risk probability of using failure of the steam generator 1 is reduced, and the service life of the steam generator 1 is prolonged.

It is understood that the speed increasing member 20 may be integrally formed with the inner wall of the steam generating channel 100, or the speed increasing member 20 may be fixed in the steam generating channel 100, and is not limited thereto. In order to reduce the resistance to the flow of water in the steam generating channel 100, the surface of the speed increasing member 20 is preferably smooth so that the fluid in the steam generating channel 100 can smoothly pass through the speed increasing member 20.

For the steam generating box 10, it may be of an integrally formed structure or a split structure. In this embodiment, in order to reduce the manufacturing difficulty of the steam generating box 10, the steam generating box 10 preferably adopts a split structure, wherein: the steam generating box 10 comprises a box body 130 and a box cover 140, wherein the box body 130 is provided with a box cavity 132 and an opening 131 arranged at the upper side of the box body 130, the opening 131 is communicated with the box cavity 132, and the water inlet end 110 and the steam outlet end 120 are respectively formed at the two opposite ends of the box body 130; a box cover 140 which is provided at the open port 131 to allow the box cavity 132 to form the steam generation path 100. The box chamber 132 has an inner chamber wall along its length, and the speed increasing member 20 is provided on the inner chamber wall and/or the side of the box cover 140 facing the steam generating channel 100.

It is understood that the speed increasing member 20 may be disposed on the box body 130, or the speed increasing member 20 may be disposed on the box cover 140, or the speed increasing member 20 may be disposed on both the box body 130 and the box cover 140, as long as the condition that the speed increasing member 20 can increase the speed of the fluid in the steam generating channel 100 is satisfied. The heating member 30 is preferably provided in the bottom wall of the case 130 to facilitate heating of the water in the steam generating channel 100.

Further, the speed increasing member 20 includes a speed increasing protrusion 210 protruding from an inner wall of the steam generating channel 100. The speed increasing protrusion 210 is disposed on the inner cavity wall of the box cavity 132 of the box body 130, so that the installation process of the speed increasing member 20 and the box body 130 can be reduced, and the structure of the box body 130 is more compact.

The protrusion height of the speed increasing protrusion 210 is increased and then decreased along the extending direction of the steam generating channel 100. In this way, for the steam generating channel 100, since the height of the protrusion of the speed increasing protrusion 210 changes, the internal space of the evaporation channel gradually decreases and gradually increases, so that the flow velocity of the fluid in the steam generating channel 100 is suddenly increased when the fluid passes through the speed increasing protrusion 210, thereby preventing the solid particles in the fluid from depositing on the inner cavity wall near the speed increasing protrusion 210 to form scale. It will be appreciated that the speed increasing protrusions 210 have various shapes, such as a semicircular shape, a triangular shape, a parabolic shape, a horseshoe shape, or an arc shape in the extending direction of the steam generating channel 100 at the speed increasing protrusions 210.

In order to reduce the resistance of the speed increasing protrusion 210 to the fluid in the steam generating channel 100, the speed increasing protrusion 210 is disposed in a convex arc shape along the extending direction of the steam generating channel 100. It will be appreciated that the surface of the speed increasing protrusion 210 facing away from the inner cavity wall of the cartridge cavity 132 is curved to facilitate the flow of the fluid, and the intersection of the curved surface and the inner cavity wall of the cartridge cavity 132 is preferably rounded to facilitate the flow of the fluid along the inner cavity wall of the cartridge cavity 132.

Further, the speed increasing protrusion 210 may be provided in plurality along the extending direction of the steam generation channel 100. Through setting up a plurality of acceleration rate arch 210, in steam generation passageway 100, carry out acceleration rate many times to the fluid to make the fluid produce the fluctuation effect at the flow in-process, avoid forming stratosphere, stationary flow layer in the fluid, in order to further prevent that fixed particulate matter from carrying out the deposit near acceleration rate arch 210.

For the plurality of speed increasing protrusions 210, two adjacent speed increasing protrusions 210 are arranged at intervals; or the surfaces of two adjacent speed-increasing protrusions 210 are connected in sequence, and at this time, the plurality of speed-increasing protrusions 210 are continuously arranged.

In this embodiment, the steam generating channel 100 has a bottom wall and a first side wall and a second side wall connected to the bottom wall, the first side wall and the second side wall being oppositely disposed; at least one of the first side wall, the second side wall and the bottom wall is provided with the speed increasing protrusion 210. It is understood that the inner wall side of the box cavity 132 of the box body 130 includes a bottom wall, a first side wall and a second side wall disposed along the length direction thereof, wherein the bottom wall is disposed corresponding to the opening 131 of the box body 130. The speed increasing protrusion 210 may be located on the first side wall, and the speed increasing protrusion 210 may be provided in plurality on the first side wall; alternatively, the speed increasing protrusions 210 may be located on the second side wall, and the speed increasing protrusions 210 may be provided in plurality on the second side wall; or the speed increasing protrusion 210 may be located on the bottom wall, and the speed increasing protrusion 210 may be provided in plurality on the bottom wall. Of course, in some preferred embodiments, the speed increasing protrusions 210 are disposed on both the first side wall and the second side wall, and the speed increasing protrusions 210 on the first side wall and the speed increasing protrusions 210 on the second side wall are disposed correspondingly, so that the speed increasing effect on the fluid is better; the first side wall, the second side wall and the bottom wall can also be simultaneously provided with the speed-increasing protrusions 210, and the respective speed-increasing protrusions 210 on the first side wall, the second side wall and the bottom wall are preferably correspondingly arranged, so that the speed-increasing effect on the fluid is better.

In some other embodiments, referring to fig. 5 in combination with fig. 2, in the case where the speed increasing protrusions 210 are provided on the first side wall and/or the second side wall, the bottom wall is provided with the grooves 101 provided along the extending direction of the steam generating channel 100. The purpose of the grooves 101 is to increase the flow space at the bottom of the steam generating channel 100, so that the fluid can flow through the bottom of the steam generating channel 100 more easily, and the probability of the fixed particles in the fluid depositing on the bottom wall is reduced. In addition, because the recess 101 is arranged on the bottom wall, when fluid flows through the recess 101, the fluid swirls to form a certain vortex, so that the deposition of fixed particles on the bottom wall can be further reduced, the probability of producing scale on the bottom wall can be reduced, the heating effect of the bottom wall on water can be improved, and the potential safety hazard caused by overhigh temperature at the bottom wall can be reduced.

In this embodiment, referring to fig. 1 and fig. 3, the steam generator 1 further includes a heating element 30 disposed at the bottom of the steam generating channel 100, a temperature detecting element 40 is disposed at a lower side of the box body 130 of the steam generating box 10, and the temperature detecting element 40 is disposed corresponding to the speed increasing element 20 to detect the temperature of the position of the speed increasing element 20 in the steam generating channel 100. This Temperature detection element 40 can be thermistor (NTC), thermocouple or infrared Temperature sensor etc. and Temperature detection element 40 is connected with heating member 30 through controlling means to when the Temperature is too high, stop heating member 30 and generate heat work, with effectively preventing steam generator 1 high Temperature trouble or produce the overtemperature risk.

It should be emphasized that the temperature detecting element 40 is disposed corresponding to the speed increasing member 20, and at the position of the speed increasing member 20, scale is not easily formed, so that the heating effect at the position of the speed increasing member 20 is also better, and the local temperature of the steam generating box 10 detected by the temperature detecting element 40 is closest to the actual temperature in the steam generating channel 100, thereby ensuring the reliable operation of the heating member 30.

Further, the temperature detecting elements 40 are provided in plural, the plural temperature detecting elements 40 are arranged at intervals along the extending direction of the steam generating channel 100, and at least one of the plural temperature detecting elements 40 is provided corresponding to the speed increasing member 20. At this moment, can carry out temperature detection to the many places position of box body 130, when local high temperature, can in time carry out the outage to heating member 30, form multiple control by temperature change protection.

For example, in one embodiment, the bottom wall of the case 130 is sequentially provided with a first thermistor 420, a temperature controller 410 and a second thermistor 430 along the length direction thereof, the first thermistor 420 and the second thermistor 430 are connected to the heating member 30 through a control device, the temperature controller 410 is directly connected to the heating member 30, and the temperature controller 410 is disposed corresponding to the speed increasing member 20. When the first thermistor 420 or the second thermistor 430 reaches the overheating threshold, the power supply of the heating member 30 may be cut off, so that the heating member 30 stops operating, preventing the overheating risk of the steam generator 1; when the thermostat 410 is overheated, the thermostat 410 may directly control the heating element 30 to stop heating, thereby preventing the steam generator 1 from being overheated. In this way, the first thermistor 420, the temperature controller 410 and the second thermistor 430 form triple temperature protection, thereby effectively ensuring the working safety of the steam generator 1.

Above scheme is through setting up acceleration member 20, improves the fluid velocity of flow in the steam generation passageway 100 to do benefit to the formation position of the incrustation scale in the control steam generation passageway 100, in order to reach the purpose that reduces the influence of incrustation scale to steam generator 1. Several other solutions for modifying the interior of the steam generating channel 100 are described below.

The first scheme is as follows: in this scheme, mainly adopt to set up baffle 50 in steam generation passageway 100 to realize the improvement of the inside of steam generation passageway 100, its specific scheme is as follows:

in the present embodiment, referring to fig. 8 to 12 in combination with fig. 1 to 4, the steam generator 1 includes:

a steam generating box 10, having a steam generating channel 100 therein, said steam generating box 10 further having a water inlet end 110 and a steam outlet end 120; and

a baffle 50 disposed in the steam generation channel 100, wherein the bottom of the baffle 50 is connected to the bottom of the steam generation channel 100, so that the fluid passing through the baffle 50 flows through the top of the baffle 50.

In this embodiment, a baffle 50 is provided in the steam generation passage 100, and the bottom of the baffle 50 is connected to the bottom of the steam generation passage 100, so that the fluid passing through the baffle 50 flows through the top of the baffle 50. Therefore, when the fluid passes through the baffle 50, the flow velocity of the fluid is suddenly increased, and the probability of forming scale due to the accumulation of fixed particles is reduced; the fluid at the bottom of the steam generating channel 100 can generate vortex to form vortex, so that the accumulation of scale near the bottom of the water facing side of the baffle 50 is reduced; in addition, due to the existence of the baffle 50, after the fluid flows through the baffle 50, the backflow of the fluid in the steam generating channel 100 can be reduced, so that the deposition of scale at the water inlet end 110 is avoided, the risk probability that the water inlet 111 is blocked is reduced, the influence of the scale on the steam generator 1 is reduced, the risk probability of the use failure of the steam generator 1 is reduced, and the service life of the steam generator 1 is prolonged.

The thickness of the baffle 50 is preferably 2mm to 5mm, so as to avoid the defect of large fluid resistance caused by the excessive thickness of the baffle 50.

For the steam generating box 10, it may be of an integrally formed structure or a split structure. In this embodiment, in order to reduce the manufacturing difficulty of the steam generating box 10, the steam generating box 10 preferably adopts a split structure, wherein: the steam generating box 10 comprises a box body 130 and a box cover 140, wherein the box body 130 is provided with a box cavity 132 and an opening 131 arranged at the upper side of the box body 130, the opening 131 is communicated with the box cavity 132, and the water inlet end 110 and the steam outlet end 120 are respectively formed at the two opposite ends of the box body 130; a box cover 140 which is provided at the open port 131 to allow the box cavity 132 to form the steam generation path 100. The baffle 50 extends from the bottom of the box cavity 132 toward the opening 131, and the height of the top end of the baffle 50 is lower than the height of the opening 131, so as to prevent the baffle 50 from sealing the whole steam generation channel 100.

Further, the baffle 50 includes a front baffle 510, the front baffle 510 is disposed near the water inlet end 110, and the front baffle 510 and the water inlet end 110 are spaced apart to form the turbulent flow chamber 102. It will be appreciated that the top of the front baffle 510 is spaced from the top of the steam generating channel 100 to facilitate fluid flow therethrough. The front baffle 510 and the water inlet end 110 are spaced to form a turbulent flow chamber 102, so that water entering from the water inlet 111 first generates turbulent flow in the turbulent flow chamber 102 and then flows from the steam generating channel 100 to the steam outlet end 120. Due to the existence of the front baffle 510, the water flow at the water inlet 111 can be buffered, so that the water flow is more uniform, and after the fluid flows through the front baffle 510, the front baffle 510 can prevent the fluid from flowing back to the turbulent flow cavity 102 in the steam generation channel 100, so that the formation of the deposition of the scale at the water inlet end 110 is avoided, and the risk probability that the water inlet 111 is blocked is reduced.

A front overflow groove 511 is formed at the top of the front baffle 510 to penetrate in the thickness direction, so that the water in the turbulent flow chamber 102 can flow toward the steam outlet end 120 through the front overflow groove 511. Wherein the front overflow groove 511 comprises:

a first overflow groove 512 provided in the middle of the front baffle 510; and/or

And a second overflow groove 513 formed at the junction of the front baffle 510 and the sidewall of the steam generation channel 100.

The first overflow groove 512 is provided for the purpose of: the flow rate of the water in the middle of the front baffle 510 is increased, that is, the flow rate of the fluid in the middle of the steam generation channel 100 is increased, so that the probability of the solid particles in the fluid depositing on the inner side wall of the steam generation channel 100 is increased, and the smoothness of the fluid in the steam generation channel 100 is also improved. The fluid in the steam generation channel 100 is influenced by the coanda effect, the fluid can flow along the inner side wall flow channel of the steam generation channel 100, and the second flow passing groove 513 is arranged, so that the flow of the fluid at the side wall of the steam generation channel 100 is increased, and on the basis that the front baffle 510 blocks the accumulation of scale to the turbulent flow area, the fluid at the side wall of the steam generation channel 100 can flow along the side wall of the steam generation channel 100 more easily, which is beneficial to the improvement of the adherent flow rate of the fluid and the adjustment of the distribution of the internal flow field of the fluid, so that the scale is not easy to deposit on the side wall of the steam generation channel 100, and the scale prevention capability of the steam generation box 10 is enhanced.

Further, the baffle 50 further comprises a rear baffle 520, the rear baffle 520 is disposed near the steam outlet 120, and the dirt holding cavity 104 is formed between the rear baffle 520 and the steam outlet 120 at a spacing.

It can be understood that the rear baffle 520 also has a steady flow effect on the water in the steam generation channel 100, and a scale holding cavity 104 for holding water scales intensively is formed between the rear baffle 520 and the steam outlet end 120, so that the water scales in the steam generation channel 100 are formed in the scale holding cavity 104 intensively, the water scales are prevented from being attached to the inner side wall in the steam generation channel 100 in a large area, it is ensured that the fluid and the inner side wall in the steam generation channel 100 have sufficient contact area, and the heating efficiency is improved. In addition, due to the existence of the rear baffle 520, the backflow of the fluid in the scale containing cavity 104 towards the water inlet end 110 can be avoided, so that the backflow and accumulation of the scale towards the water inlet end 110 can be prevented, and the scale containing effect of the scale containing cavity 104 on the scale can be ensured.

The top of the rear baffle 520 is provided with a rear flow trough 521 penetrating in the thickness direction, so that the fluid can flow into the dirt holding cavity 104 through the rear flow trough. The rear overflow trough 521 includes a third overflow trough 522,

the third overflow trough 522 is provided at the intersection of the backplate 520 where it joins the side walls of the steam generation channel 100. The fluid in the steam generation channel 100 is influenced by the coanda effect, the fluid can flow along the inner side wall flow channel of the steam generation channel 100, and the third overflow groove 522 is arranged, so that the flow of the fluid at the side wall of the steam generation channel 100 is increased, the fluid at the side wall of the steam generation channel 100 can flow along the side wall of the steam generation channel 100 more easily, the improvement of the adherent flow rate of the fluid is facilitated, the distribution of the flow field in the fluid is adjusted, the solid particles in the fluid can be deposited in the scale containing cavity 104 more easily, and the scale containing effect of the scale containing cavity 104 is enhanced.

Further, an acceleration member 20 is provided on an inner wall of the steam generation channel 100, so that a flow velocity of the fluid passing through the acceleration member 20 is increased. The structure of the speed increasing member 20 can refer to the specific structure of the speed increasing member 20 in the previous scheme (the scheme of arranging the speed increasing member 20 in the steam generating channel 100), and a description thereof is omitted.

On the basis that the speed increasing member 20 is arranged on the inner wall of the steam generating channel 100, the baffle 50 preferably comprises a front baffle 510 and a rear baffle 520, the front baffle 510 is arranged close to the water inlet end 110, and the flow disturbing cavity 102 is formed between the front baffle 510 and the water inlet end 110 at intervals; the rear baffle 520 is arranged close to the steam outlet end 120, and the dirt holding cavity 104 is formed between the rear baffle 520 and the steam outlet end 120 at intervals; a speed increasing cavity 103 is formed between the front baffle 510 and the rear baffle 520; the speed increasing member 20 is located in the speed increasing chamber 103.

It is understood that the steam generating channel 100 comprises a turbulent flow chamber 102, a speed increasing chamber 103 and a scale containing chamber 104 which are communicated in sequence along the extending direction of the steam generating channel, wherein the structure and the function of the turbulent flow chamber 102 and the scale containing chamber 104 are explained in the above, and are not explained in detail; in the speed increasing cavity 103, because the existence of speed increasing piece 20 can make the fluid velocity of flow increase to prevent that the solid particle thing in the fluid from deposiing in speed increasing cavity 103 and forming the incrustation scale, more do benefit to solid particle thing and flow and deposit formation incrustation scale to holding dirty chamber 104, thereby realize adjusting the position of formation of incrustation scale, reduce the influence of incrustation scale to steam generator 1.

In addition, in the above embodiment, since the speed increasing member 20 is disposed in the speed increasing chamber 103, and further the optimal heating area of the heating member 30 is correspondingly disposed at the position of the speed increasing chamber 103, at this time, since the scale is not easily generated in the speed increasing chamber 103, the heating efficiency of the heating member 30 can be further ensured to a greater extent. It can be understood that the incrustation scale is not easy to form in the speed increasing cavity 103, the fluid is fully contacted with the cavity wall of the speed increasing cavity 103 for heat exchange, the defect that the local temperature rise of the heating element 30 is too high due to the incrustation scale is avoided, and the service life of the heating element 30 is prolonged.

In this embodiment, the temperature detecting element 40 may be provided on the lower side of the case body 130 of the steam generating case 10, and the specific structure thereof may refer to the structure of the temperature detecting element 40 in the previous embodiment (embodiment in which the speed increasing member 20 is provided in the steam generating path 100). It should be emphasized that, in this embodiment, the bottom wall of the case 130 is sequentially provided with the first thermistor 420, the temperature controller 410 and the second thermistor 430 along the length direction thereof, the first thermistor 420 and the second thermistor 430 are connected with the heating member 30 through the control device, the temperature controller 410 is directly connected with the heating member 30, and the temperature controller 410 is disposed corresponding to the speed increasing member 20. When the first thermistor 420 or the second thermistor 430 reaches the overheating threshold, the power supply of the heating member 30 may be cut off, so that the heating member 30 stops operating, preventing the overheating risk of the steam generator 1; when the thermostat 410 is overheated, the thermostat 410 may directly control the heating element 30 to stop heating, thereby preventing the steam generator 1 from being overheated.

In this case, the first thermistor 420 is disposed corresponding to the turbulent flow chamber 102, and the second thermistor 430 is disposed corresponding to the dirt accommodating chamber 104, so that the first thermistor 420, the temperature controller 410, and the second thermistor 430 form triple temperature protection at three positions of the steam generating channel 100, thereby effectively ensuring the working safety of the steam generator 1.

Scheme II: in this scheme, mainly adopt to set up reposition of redundant personnel 60 in steam generation passageway 100 to realize the improvement of the inside of steam generation passageway 100, its specific scheme is as follows:

in the present embodiment, referring to fig. 13 to 18 in combination with fig. 1 to 4 and 8, the steam generator 1 includes:

a steam generating box 10, having a steam generating channel 100 therein, wherein the steam generating box 10 has a water inlet end 110 and a steam outlet end 120, and the steam generating channel 100 is communicated with the water inlet end 110 and the steam outlet end 120; and

the flow divider 60 is disposed in the steam generating channel 100, the flow divider 60 has a first flow guide surface 610 and a second flow guide surface 620 adjacent to or opposite to the first flow guide surface 610, the first flow guide surface 610 and the inner wall of the steam generating channel 100 are spaced to form a first variable flow gap 105, the second flow guide surface 620 and the inner wall of the steam generating channel 100 are spaced to form a second variable flow gap 106, and the flow rate of the fluid flowing through the first variable flow gap 105 is greater than the flow rate of the fluid flowing through the second variable flow gap 106.

In this embodiment, due to the existence of the flow divider 60, the flow velocities of the fluid at the first deflector gap 105 and the second deflector gap 106 are different, so that the fluid in the steam generating channel 100 forms two flow layers with different flow velocities, thereby reducing the deposition of solid particles in the fluid on the inner side wall of the steam generating channel 100 to form scale, reducing the influence of the scale on the steam generator 1, reducing the risk of using failure of the steam generator 1, and simultaneously contributing to prolonging the service life of the steam generator 1.

For the steam generating box 10, it may be of an integrally formed structure or a split structure. In this embodiment, in order to reduce the manufacturing difficulty of the steam generating box 10, the steam generating box 10 preferably adopts a split structure, wherein: the steam generating box 10 comprises a box body 130 and a box cover 140, wherein the box body 130 is provided with a box cavity 132 and an opening 131 arranged at the upper side of the box body 130, the opening 131 is communicated with the box cavity 132, and the water inlet end 110 and the steam outlet end 120 are respectively formed at the two opposite ends of the box body 130; a box cover 140 which is provided at the open port 131 to allow the box cavity 132 to form the steam generation path 100. The flow divider 60 is located in the box cavity 132 and is disposed at the bottom of the box cavity 132, and the steam generating channel 100 extends along the length direction of the box body 130. In addition, because the shunt 60 is arranged, the shunt 60 is connected with the box body 130, and the shunt 60 can also conduct the heat of the box body 130, so that the heat exchange contact area between the fluid and the inner side wall of the steam generation channel 100 is increased, and the improvement of the heating efficiency of the fluid is facilitated

Further, the flow divider 60 is disposed at the bottom of the steam generating channel 100, the first flow guiding surface 610 and the second flow guiding surface 620 are disposed oppositely, and the first flow guiding surface 610 and the second flow guiding surface 620 both extend along the extending direction of the steam generating channel 100. The flow divider 60 extends along the length direction of the box body 130, the flow divider 60 has a first flow guiding surface 610 and a second flow guiding surface 620 extending along the length direction of the box body 130, and the first flow guiding surface 610 and the second flow guiding surface 620 are oppositely arranged in the width direction of the box body 130, so that the first variable flow gap 105 and the second variable flow gap 106 also extend along the length direction of the box body 130 (i.e. the extending direction of the steam generating channel 100).

The flow velocity of the fluid in the first deflector gap 105 and the second deflector gap 106 will vary. Preferably, the flow velocity of the fluid flowing through the first deflector gap 105 and/or the second deflector gap 106 is increased. In order to increase the flow velocity of the fluid flowing through the first variable flow gap 105, the steam generating box 10 has the following structure:

the first flow guiding surface 610 has a convex increasing portion 630, so that the flow velocity of the fluid flowing through the increasing portion 630 in the first deflector gap 105 is increased; and/or the presence of a gas in the gas,

the inner wall of the steam generating channel 100 facing the first guiding surface 610 is provided with a speed increasing protrusion 210, so that the flow velocity of the fluid flowing through the speed increasing protrusion 210 in the first deflector gap 105 is increased.

The specific structure of the speed increasing protrusion 210 can refer to the specific structure of the speed increasing protrusion 210 in the scheme of arranging the speed increasing member 20 in the steam generating channel 100, and details are not repeated here.

Preferably, the protruding height of the speed increasing portion 630 is increased and then decreased along the extending direction of the steam generating channel 100; and/or, the protruding height of the speed increasing protrusion 210 is increased and then decreased along the extending direction of the steam generating channel 100. In this way, the inner space of the first deflector gap 105 is gradually decreased and then gradually increased, so that the flow velocity of the fluid in the first deflector gap 105 is increased.

In some modified embodiments, referring to fig. 13 to 15, a speed increasing protrusion 210 is disposed on an inner wall of the steam generating channel 100 facing the first flow guiding surface 610, so as to increase a flow velocity of the fluid flowing through the speed increasing protrusion 210 in the first flow changing gap 105; the first guiding surface 610 has a concave portion 640 at a position corresponding to the speed increasing protrusion 210, and the surface of the concave portion 640 is concave, so as to reduce the flow resistance of the fluid. By providing the recess 640, the fluid in the first deflector gap 105 can be caused to swirl or eddy at the recess 640, thereby further reducing the deposition of solid particles at the first deflector gap 105 to form scale.

Similarly, the technical solution for increasing the flow velocity of the fluid flowing through the second variable flow gap 106 is similar to the structure of the steam generating box 10, and the inner wall of the steam generating channel 100 facing the second flow guiding surface 620 is provided with a speed increasing protrusion 210, or the first flow guiding surface 610 is provided with a convex speed increasing portion 630, which is not described herein again.

Further, the top of the flow divider 60 is spaced apart from the top of the steam generation channel 100. At this time, a certain interval is formed between the top of the flow divider 60 and the cover 140, so that the fluid can also flow through the top of the flow divider 60, the contact area between the fluid and the inner sidewall of the steam generation channel 100 is increased, and the heating efficiency of the fluid is improved.

In a preferred embodiment, the bottom of the steam generating channel 100 is provided with a speed increasing protrusion 210, and the flow divider 60 is provided on the surface of the speed increasing protrusion 210. The bottom wall of the box body 130 is provided with a speed increasing protrusion 210 to increase the flow rate of the fluid in the steam generating channel 100 and reduce the probability of forming scale on the bottom wall of the box body 130.

Further, referring to fig. 17, the protrusion height of the speed increasing protrusion 210 is increased and then decreased along the extending direction of the steam generating channel 100, and the bottom of the flow divider 60 is connected to the top of the speed increasing protrusion 210;

the bottom of the flow divider 60 is formed with a third deflector gap 107 along the extension of the steam generating channel 100; and/or

The turbulent flow spaces 108 are formed at both ends of the bottom of the flow dividing member 60 and the surfaces of the speed increasing protrusions 210.

It can be understood that, the speed-increasing protrusion 210 makes the steam generating channel 100 decrease and increase in the extending direction, when the splitter 60 is connected to the speed-increasing protrusion 210, the bottom of the splitter 60 is connected to the speed-increasing protrusion 210, and at this time, the two ends of the bottom of the splitter 60 and the surface of the speed-increasing protrusion 210 form the turbulent flow space 108, so that the fluid generates a vortex flow in the turbulent flow space 108, and the formation of scale deposit is avoided. When the area of the bottom of the flow divider 60 is large, in addition to the connection between the bottom of the flow divider 60 and the top of the speed increasing protrusion 210, the bottom of the flow divider 60 may also form the third deflector gap 107, so that the fluid flows along the bottom surface of the flow divider 60, and the deposition of solid particles on the bottom of the steam generating channel 100 to form scale is reduced.

In a preferred embodiment of this embodiment, the flow divider 60 preferably includes an airfoil flow divider, the airfoil flow divider has an airfoil flow guide plane and a planar flow guide plane (it can be understood that the airfoil flow guide plane and the planar flow guide plane correspond to the first flow guide plane 610 and the second flow guide plane 620, respectively), the bottom surface of the airfoil flow divider abuts against the speed-increasing protrusion 210, the airfoil flow guide plane and the planar flow guide plane are both disposed along the extending direction of the steam generating channel 100, the middle portion of the surface of the airfoil flow guide plane protrudes toward the direction away from the planar flow guide plane, two ends of the airfoil flow divider are disposed in a tapered manner, and two ends of the airfoil flow divider are in a smooth transition, so that on the basis of reducing the influence of the airfoil flow divider on the resistance of the fluid, the fluid is more likely to generate a vortex when passing through the airfoil flow guide plane, and the generation probability of scale is reduced. Further, the plane diversion surface is also preferably arranged in an inclined manner with respect to the extending direction of the steam generating channel 100, so that a variable flow gap is formed between the plane diversion surface and the inner side wall of the steam generating channel 100, the flow velocity of the fluid can be adjusted, and the generation probability of scale can be reduced.

In this embodiment, the baffle 50 may be provided in the steam generating box 10, and the structure and the arrangement of the baffle 50 may refer to the specific structure of the baffle 50 in the first embodiment (the embodiment in which the baffle 50 is provided in the steam generating path 100). It should be noted that the baffle 50 preferably includes a front baffle 510 and a rear baffle 520, the front baffle 510 is disposed near the water inlet end 110, and the front baffle 510 and the water inlet end 110 are spaced to form the turbulent flow chamber 102; the rear baffle 520 is arranged close to the steam outlet end 120, and the dirt holding cavity 104 is formed between the rear baffle 520 and the steam outlet end 120 at intervals; a speed increasing cavity 103 is formed between the front baffle 510 and the rear baffle 520; the splitter 60 is located within the speed increasing chamber 103.

It is understood that the steam generating channel 100 comprises a turbulent flow chamber 102, a speed increasing chamber 103 and a scale containing chamber 104 which are communicated in sequence along the extending direction of the steam generating channel, wherein the structure and the function of the turbulent flow chamber 102 and the scale containing chamber 104 are explained in the above, and are not explained in detail; in the speed increasing cavity 103, because the existence of reposition of redundant personnel 60, can make the fluid have the flow layer of the different velocity of flow of multilayer to prevent that the solid particle in the fluid from deposiing in speed increasing cavity 103 and forming the incrustation scale, more do benefit to solid particle and flow and deposit formation incrustation scale to holding incrustation scale chamber 104, thereby realize adjusting the position of formation of incrustation scale, reduce the influence of incrustation scale to steam generator 1.

The third scheme is as follows: in this scheme, mainly adopt to set up flow distribution plate 70 in steam generation passageway 100 to realize the improvement of the inside of steam generation passageway 100, its specific scheme is as follows:

in the present embodiment, referring to fig. 18 to 22 in combination with fig. 1 to 4 and 8, the steam generator 1 includes:

the dividing plate 70 is obliquely and convexly arranged at the bottom of the steam generation channel 100 along the extending direction of the steam generation channel 100, and two sides of the dividing plate 70 and the inner wall of the steam generation channel 100 are arranged at intervals, so that the fluid flowing through two sides of the dividing plate 70 has different flow rates.

In this embodiment, due to the existence of the splitter plate 70, the fluids on both sides of the splitter plate 70 have different flow rates, so that the fluids in the steam generation channel 100 form two flow layers with different flow rates, thereby reducing the deposition of solid particles in the fluids on the inner side wall of the steam generation channel 100 to form scale, reducing the influence of the scale on the steam generator 1, reducing the risk probability of using failure of the steam generator 1, and simultaneously helping to prolong the service life of the steam generator 1.

For the steam generating box 10, it may be of an integrally formed structure or a split structure. In this embodiment, in order to reduce the manufacturing difficulty of the steam generating box 10, the steam generating box 10 preferably adopts a split structure, wherein: the steam generating box 10 comprises a box body 130 and a box cover 140, wherein the box body 130 is provided with a box cavity 132 and an opening 131 arranged at the upper side of the box body 130, the opening 131 is communicated with the box cavity 132, and the water inlet end 110 and the steam outlet end 120 are respectively formed at the two opposite ends of the box body 130; a box cover 140 which is provided at the open port 131 to allow the box cavity 132 to form the steam generation path 100. The dividing plate 70 is located in the box cavity 132 and is disposed at the bottom of the box cavity 132, and the steam generating channel 100 extends along the length direction of the box body 130. In addition, because the flow distribution plate 70 is arranged, the flow distribution plate 70 is connected with the box body 130, and the flow distribution plate 70 can also conduct the heat of the box body 130, so that the heat exchange contact area between the fluid and the inner side wall of the steam generation channel 100 is increased, and the improvement of the heating efficiency of the fluid is facilitated

The steam generator 1 further comprises a flow guide 80 provided at the bottom of the steam generating channel 100, the flow guide 80 being located between the flow dividing plate 70 and the water inlet end 110. By providing the diversion member 80, the fluid can be diverted toward the diversion plate 70, which is more advantageous for diversion of the fluid. The baffle 80 is preferably spaced from the diverter plate 70 so that a portion of the fluid can flow from the gap between the baffle 80 and the diverter plate 70, thereby dividing the fluid into a plurality of sub-streams of different directions and reducing the likelihood of scale formation from the deposition of solid particles adjacent the baffle 80 and the diverter plate 70.

Further, the flow guiding element 80 includes a straight flow dividing plate 810 disposed in the steam generating channel 100, and the straight flow dividing plate 810 is disposed along the extending direction of the steam generating channel 100; and/or

The diversion member 80 includes a diversion inclined plate 820 disposed in the steam generation channel 100, the diversion inclined plate 820 is inclined from the extending direction of the steam generation channel 100, and the inclination direction of the diversion inclined plate 820 is opposite to the inclination direction of the splitter plate 70.

It should be noted that the straight diversion plate 810 is used for diverting the fluid to form a plurality of strands of fluid, and the straight diversion plate 810 has the effect of stabilizing and diverting the fluid; the diversion inclined plate 820 is used for guiding and diverting the fluid to the diversion plate 70.

The straight flow dividing plate 810 and the inclined flow guiding plate 820 can be present independently, and the straight flow dividing plate 810 and the inclined flow guiding plate 820 can also be present simultaneously. When the diversion member 80 includes the straight diversion plate 810 and the sloping diversion plate 820, the straight diversion plate 810 and the sloping diversion plate 820 may be disposed at intervals along the extending direction of the steam generating channel 100, or the straight diversion plate 810 and the sloping diversion plate are integrally connected. Wherein, as the preferred embodiment, the straight shunting plate 810 is connected with the straight diversion plate, and the end of the straight shunting plate 810 close to the shunting plate 70 is connected with the sloping diversion plate 820, so as to realize the effect of shunting the fluid first and conducting the drainage on the fluid.

In some preferred embodiments, referring to fig. 18, 21 and 22, the diverter plate 70 includes a plurality of sub-baffles 710 arranged in parallel;

a plurality of sub-partitions 710 are disposed at intervals in the length direction of the steam generation channel 100; and/or

The plurality of sub-partitions 710 are arranged at intervals in the width direction of the steam generation channel 100.

Through setting up, a plurality of sub-baffle 710 can be so that flow distribution plate 70 on the basis of realizing self reposition of redundant personnel, form the breach that supplies the fluid circulation between two adjacent sub-baffle 710 to can form the tributary of the different flow directions of stranded, further avoid solid particle thing near flow distribution plate 70 to produce the incrustation scale. Furthermore, the gaps formed by the two adjacent sub-partition plates 710 are arranged in a step shape in the extending direction and/or the width direction of the steam generating channel 100, so that a step-shaped flow layer is formed, and the deposition of scale can be reduced. In some embodiments, the manifold 70 has two or three subpanels 710.

Further, a speed increasing protrusion 210 is convexly disposed on the side wall of the steam generating channel 100, and the flow distribution plate 70 is disposed corresponding to the speed increasing protrusion 210. The specific structure of the speed increasing protrusion 210 can refer to the specific structure of the speed increasing protrusion 210 in the scheme of arranging the speed increasing member 20 in the steam generating channel 100, and details are not repeated here.

In this embodiment, a speed increasing protrusion 210 is protruded from the bottom of the steam generating channel 100, and the flow divider 60 is located on the surface of the speed increasing protrusion 210. The bottom wall of the box body 130 is provided with a speed increasing protrusion 210 to increase the flow rate of the fluid in the steam generating channel 100 and reduce the probability of forming scale on the bottom wall of the box body 130.

Further, referring to fig. 19 and 20, the protrusion height of the speed increasing protrusion 210 is increased and decreased along the extending direction of the steam generating channel 100;

the flow distribution plate 70 is connected with the top of the speed increasing protrusion 210, so that two ends of the flow distribution plate 70 and the surface of the speed increasing protrusion 210 are spaced to form a flow disturbance area 109; or

The bottom of the diverter plate 70 is connected to the surface of the speed increasing protrusion 210.

It will be appreciated that the speed increasing protrusions 210 allow the steam generating channel 100 to be arranged in a decreasing and increasing manner in the extending direction thereof. When the flow distribution plate 70 is connected to the speed increasing protrusions 210, there are two cases: firstly, the bottom part of the flow distribution plate 70 is connected with the speed increasing protrusion 210, that is, the bottom end of the flow distribution plate 70 is only connected with the top of the speed increasing protrusion 210, and two ends of the bottom of the flow distribution member 60 and the surface of the speed increasing protrusion 210 form a turbulent flow space 108, so that the fluid generates a vortex in the turbulent flow space 108, and the formation of scale deposit is avoided; secondly, the bottom of the flow distribution plate 70 is completely connected with the surface of the speed increasing protrusion 210, so that a flow space extending along the steam generating channel 100 is formed at the junction of the flow distribution plate 70 and the surface of the speed increasing protrusion 210, thereby enhancing the adherent flow effect of the fluid and reducing the probability of scale generation at the bottom of the steam generating channel 100.

In addition, the baffle 50 may be provided in the steam generating box 10, and the structure and the arrangement of the baffle 50 may refer to the specific structure of the baffle 50 in the first embodiment (the embodiment in which the baffle 50 is provided in the steam generating path 100). It should be noted that the baffle 50 preferably includes a front baffle 510 and a rear baffle 520, the front baffle 510 is disposed near the water inlet end 110, and the front baffle 510 and the water inlet end 110 are spaced to form the turbulent flow chamber 102; the rear baffle 520 is arranged close to the steam outlet end 120, and the dirt holding cavity 104 is formed between the rear baffle 520 and the steam outlet end 120 at intervals; a speed increasing cavity 103 is formed between the front baffle 510 and the rear baffle 520; the splitter plate 70 and the flow guide 80 are both located in the speed increasing chamber 103.

It is understood that the steam generating channel 100 comprises a turbulent flow chamber 102, a speed increasing chamber 103 and a scale containing chamber 104 which are communicated in sequence along the extending direction of the steam generating channel, wherein the structure and the function of the turbulent flow chamber 102 and the scale containing chamber 104 are explained in the above, and are not explained in detail; in the speed increasing cavity 103, because the existence of flow distribution plate 70, can make the fluid have the flow layer of the different velocity of flow of multilayer to prevent that the solid particle in the fluid from deposiing in speed increasing cavity 103 and forming the incrustation scale, more do benefit to solid particle and flow and deposit formation incrustation scale to holding incrustation scale chamber 104, thereby realize adjusting the position of formation of incrustation scale, reduce the influence of incrustation scale to steam generator 1.

The invention further provides a household appliance, which comprises the steam generator, the specific structure of the steam generator refers to the above embodiments, and as the household appliance adopts all the technical schemes of all the above embodiments, the household appliance at least has all the beneficial effects brought by the technical schemes of the above embodiments, and no further description is given here. The household appliances include, but are not limited to, household appliances such as an integrated stove, a range hood, a disinfection cabinet, a microwave oven, a garment steamer and the like.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A steam generator, comprising:

the flow dividing piece is arranged in the steam generating channel and provided with a first flow guiding surface and a second flow guiding surface adjacent to or opposite to the first flow guiding surface, the first flow guiding surface and the second flow guiding surface both extend along the extending direction of the steam generating channel, the first flow guiding surface and the inner wall of the steam generating channel form a first variable flow gap at intervals, the second flow guiding surface and the inner wall of the steam generating channel form a second variable flow gap at intervals, and the flow velocity of fluid flowing through the first variable flow gap is greater than that of fluid flowing through the second variable flow gap.

2. The steam generator of claim 1, wherein the flow splitter defines a bottom of the steam generating channel, and the first flow directing surface is disposed opposite the second flow directing surface.

3. The steam generator of claim 2, wherein the first deflector surface has a raised acceleration portion to increase the flow velocity of fluid flowing through the acceleration portion in the first deflector gap; and/or the presence of a gas in the gas,

4. The steam generator of claim 3, wherein the height of the protrusion of the speed increasing portion increases and decreases along the extending direction of the steam generating channel;

5. The steam generator of claim 2, wherein an increasing protrusion is disposed on an inner wall of the steam generating channel facing the first flow guide surface, so as to increase a flow velocity of the fluid flowing through the increasing protrusion in the first flow changing gap;

6. The steam generator of claim 2, wherein a top of the flow splitter is spaced from a top of the steam generating channel.

7. The steam generator of claim 1, wherein a speed-increasing protrusion is disposed at a bottom of the steam generating channel, and the flow divider is disposed on a surface of the speed-increasing protrusion.

8. The steam generator of claim 7, wherein the height of the acceleration protrusion increases and decreases along the extension direction of the steam generation channel, and the bottom of the flow divider is connected to the top of the acceleration protrusion;

9. The steam generator of any of claims 1 to 8, wherein the steam generating cartridge comprises:

10. A household appliance, characterized in that it comprises a steam generator according to any one of claims 1 to 9.