CN212983356U - Heating structure for steam generator, steam generator and washing machine - Google Patents

Abstract

The utility model provides a heating structure for a steam generator, which comprises a heating structure body fixed at the bottom of a shell of a generator body; the heating structure body comprises a tubular heater which is provided with a channel for forming a heating area; the channel is communicated with the cavity of the shell; the fixing piece is of a casing structure; the fixing piece is provided with a tubular hollow area so as to be sleeved on the outer peripheral side of the tubular heater; the wiring assembly is fixed on the fixing piece so as to electrically connect the tubular heater with the circuit of the generator body. The utility model also provides a steam generator and washing machine. A tubular heater is adopted, a channel is arranged as a heating area, the inner surface area of the channel is large, and the heating is fast; the fixing piece is sleeved on the outer peripheral side of the tubular heater and is of a sleeve structure, and the fixing piece is convenient to mount; the mounting is fixed with the wiring subassembly, and the wiring subassembly installation is convenient, the wiring of being convenient for.

Description

Heating structure for steam generator, steam generator and washing machine

Technical Field

The utility model relates to a household electrical appliances technical field especially relates to a heating structure, steam generator, washing machine for steam generator.

Background

The clothes processing device provides functions of steam decontamination, steam drying, steam wrinkle removal, steam sterilization and the like through the steam generator. In order to increase the heating rate, the heating surface area of the tubular heater needs to be increased, which in turn affects the size of the evaporator. The present application proposes a tubular heating structure, which needs to be further designed and optimized.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a heating structure for a steam generator, which comprises a tubular heater, wherein the tubular heater is provided with a channel to form a heating area, the inner surface area of the channel is large, and the heating is fast; the fixing piece is sleeved on the outer peripheral side of the tubular heater, and the wiring assembly is convenient and fast to fix.

In order to achieve the above purpose, the utility model is realized by the following technical scheme.

The utility model provides a heating structure for a steam generator, which comprises a heating structure body fixed at the bottom of a shell of a generator body; the heating structure body includes:

a tubular heater provided with a passage for forming a heating region; the channel is communicated with the cavity of the shell;

the fixing piece is of a casing structure; the fixing piece is provided with a tubular hollow area so as to be sleeved on the outer peripheral side of the tubular heater;

and the wiring assembly is fixed on the fixing piece so as to electrically connect the tubular heater with the circuit of the generator body.

Preferably, the fixing piece is provided with a first fixing part, so as to be clamped with the wiring assembly.

Preferably, the fixing piece comprises a first cover body and a second cover body; the first cover body is detachably connected with the second cover body to form the hollow area.

Preferably, the hollow region inner contour abuts against the tubular heater outer peripheral side.

Preferably, the first cover body and the second cover body are respectively provided with a first abutting part and a second abutting part; the first abutting part abuts against the second abutting part and is connected with the second abutting part through a fastener.

Preferably, the fixing member is provided with two first notches for respectively allowing the lugs at two sides of the flange plate located in the hollow area to penetrate out and then to be fixed on the shell.

Preferably, the first cover body and the second cover body are respectively provided with a second gap and a third gap; the second gap and the third gap are oppositely formed in positions and used for fixing a first fixing part of the wiring assembly, so that the first fixing part and the first clamping grooves on two sides of the wiring assembly are clamped and connected with each other respectively.

Preferably, the heater structure body further includes a temperature control switch fixed to the second fixing portion of the fixing member.

Preferably, the second fixing portion includes:

the detection end of the temperature control switch extends into the fourth gap to be close to the tubular heater;

and the mounting hole is fixedly connected with the temperature control switch.

Preferably, the number of the first fixing parts is at least two.

Preferably, the number of the second fixing parts is at least two, so as to install at least two temperature control switches with different temperature thresholds.

Preferably, at least two of the second fixing portions are located at both sides of the tubular heater.

The heating structure body further comprises a sealing cover which is fixed at the opening end of the tubular heater far away from the shell.

A second object of the present invention is to provide a steam generator, comprising a generator body disposed in a clothes treatment device, wherein the generator body comprises a housing; further comprising a heating structure for a steam generator as described above; the shell is provided with a cavity for containing steam; the cavity is communicated with the channel, so that water in the cavity flows into the channel to be heated to form steam.

Preferably, the channel is arranged perpendicular to the horizontal plane.

The third purpose of the utility model is to provide a washing machine, which comprises a box body, wherein the steam generator is arranged in the box body; the water inlet of the generator body is connected with a water pipe in the washing machine box body, and the air outlet of the generator body is communicated with the washing machine inner barrel to provide steam for the washing machine inner barrel.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a heating structure for a steam generator, which adopts a tubular heater, is provided with a channel as a heating area, and has large surface area in the channel and quick heating; the fixing piece is sleeved on the outer peripheral side of the tubular heater and is of a sleeve structure, and the fixing piece is convenient to mount; the mounting is fixed with the wiring subassembly, and the wiring subassembly installation is convenient, and the wiring is arranged rationally.

In a preferable scheme, the fixing piece comprises a first cover body and a second cover body, and the first cover body and the second cover body are detachably connected so that the fixing piece can be sleeved on the outer peripheral side of the tubular heater.

In an optimal selection scheme, the mounting is equipped with two first breachs to the both sides limit ear that supplies to be located the ring flange in the mounting hollow area is worn out the back and is fixed in on the casing, and then is fixed in the casing with the mounting, and it is convenient to install, need not the hollow region profile chucking tubular heater periphery side surface of mounting and can install the mounting steadily, reduces the assembly degree of difficulty.

In a preferred scheme, the first cover body, the second cover body are equipped with second breach, third breach respectively, and when the first cover body, the second cover body aimed at and are close to, second breach, third breach do not with the first draw-in groove looks joint of wiring subassembly both sides, and the wiring subassembly assembly is convenient.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the specification, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is an exploded view of the mounting member, tubular heater, wiring assembly, and temperature controlled switch assembly of the present invention;

fig. 2 is an exploded view of the fixing member of the present invention;

fig. 3 is a cross-sectional view of a generator body of the present invention;

fig. 4 is an exploded view of the generator body of the present invention;

fig. 5 is a schematic perspective view of a first housing according to the present invention;

fig. 6 is a schematic perspective view of a second housing according to the present invention;

fig. 7 is a schematic perspective view of the thick film heating assembly of the present invention;

fig. 8 is a schematic perspective view of the generator body according to the present invention.

In the figure:

1. a generator body;

10. a housing; 11. a cavity; 12. a first baffle plate; 13. a second baffle; 14. a water inlet; 15. an air outlet; 161. a first current limiting portion; 1611. a first cavity; 1612. a fifth notch; 162. a second current limiting portion; 1621. a second cavity; 1622. a sixth notch; 1623. a flow guide channel; 171. a first housing; 172. a second housing;

20. a thick film heating assembly; 21. a channel; 22. a heat conducting plate; 23. an inner insulating dielectric layer; 24. a resistance heating layer; 25. an electrode terminal;

30. a liquid level sensor;

40. a flange plate; 41. a side ear;

50. a wiring assembly; 51. a first card slot;

60. a sealing tube;

70. a sealing cover;

80. a seal ring;

91. an automatic temperature control switch; 92. a manual temperature control switch;

193. mounting grooves;

100. a fixing member; 1001. a first cover body; 10011. a first abutting portion; 10012. a second notch; 1002. a second cover body; 10021. a second abutting portion; 10022. a third notch; 1003. a first notch; 1004. a fourth notch; 1005. and (7) installing holes.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a more detailed description of the present invention, which will enable those skilled in the art to make and use the present invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Example 1

The utility model provides a heating structure for a steam generator, as shown in figures 1 to 4 and 8, comprising a heating structure body fixed at the bottom of a shell 10 of a generator body 1; the heating structure body includes:

a tubular heater provided with a passage 21 for forming a heating region; the channel 21 communicates with the cavity 11 of the housing 10; the generator body 1 is arranged in the clothes treatment device, when the clothes treatment device starts a relevant program requiring steam, liquid water is introduced into the cavity 11 of the shell 10, and the liquid water flows into the channel 21 from the cavity 11 and contacts the surface of the channel 21 to be heated to form steam;

a fixture 100 in a case structure; the fixing member 100 is provided with a tubular hollow region to be fitted around an outer circumferential side of the tubular heater;

the wiring assembly 50 is fixed on the fixing member 100 to electrically connect the tubular heater with the circuit of the generator body 1. So that the tubular heater is switched on or off to turn on or off the generator body 1, and then steam is supplied to the clothes containing drum of the clothes treatment device, so as to perform clothes treatment operations such as steam drying, steam wrinkle removal, steam odor removal and the like on the clothes. The fixing member 100 is provided to avoid providing a corresponding fixing structure on the tubular heater to fix the wiring assembly, to reduce the processing cost of the tubular heater, and to facilitate the wiring of the heating structure body. Further, the wiring member 50 is a wiring terminal.

In one embodiment, the fixing member 100 is provided with a first fixing portion for engaging with the wiring module 50, so as to facilitate the assembling and disassembling of the wiring module 50. Further, the first fixing portion and the wiring assembly 50 are mounted by being clamped with the clamping protrusion through the first clamping groove.

In one embodiment, the fixing member 100 includes a first housing 1001 and a second housing 1002; the first cap 1001 is detachably coupled to the second cap 1002 to form a hollow area. The first cover 1001 and the second cover 1002 are respectively installed from two sides of the tubular heater in a close manner, and the tubular heater is clamped in the hollow area of the fixing piece 100 until the first cover 1001 and the second cover 1002 are fixed, so that the fixing piece is sleeved on the outer peripheral side of the tubular heater, and the assembly is easy.

Further, the inner contour of the hollow region abuts against the outer circumferential side of the tubular heater to increase the friction between the inner contour of the fixing member 100 and the outer surface of the tubular heater to secure the installation of the fixing member 100.

In an embodiment, as shown in fig. 2, the first cover 1001 and the second cover 1002 are respectively provided with a first abutting portion 10011 and a second abutting portion 10021; the first abutment portion 10011 abuts against the second abutment portion 10021 and is connected thereto by a fastener. First butt portion 10011 stretches out first cover body 1001 lateral wall, and second butt portion 10021 stretches out second cover body 1002 lateral wall, and first butt portion 10011 easily aligns with second butt portion 10021 in order to connect, reduces the assembly degree of difficulty between first cover body 1001, the second cover body 1002.

In an embodiment, the fixing member 100 is provided with two first notches 1003, so that the lugs 41 at two sides of the flange 40 in the hollow area are respectively fixed on the housing 10 of the generator body 1 after penetrating out, and the fixing member is further fixed on the housing, so that the installation is convenient and fast, the fixing member can be stably installed without clamping the peripheral surface of the tubular heater by the outline of the hollow area of the fixing member, and the assembly difficulty is reduced.

In an embodiment, the first cover 1001 and the second cover 1002 are respectively provided with a second notch 10012 and a third notch 10022; the second notch 10012 and the third notch 10022 form first fixing portions opposite to each other, so as to be respectively connected to the first slots 51 on both sides of the wiring assembly 50. When the first cover 1001 and the second cover 1002 are aligned and close to each other from two sides of the tubular heater, the second notch and the third notch are respectively clamped with the first clamping grooves 51 at two sides of the wiring assembly 50, so that the wiring assembly 50 is convenient to assemble.

In one embodiment, the heater structure body further includes a temperature control switch fixed to the second fixing portion of the fixing member 100. Specifically, the fixing member 100 is provided with a second fixing portion for mounting a temperature control switch of the generator body 1 for cutting off the power supply of the tubular heater when the temperature of the tubular heater exceeds a temperature threshold.

Further, as shown in fig. 1, fig. 2, fig. 4, and fig. 8, the second fixing portion includes a fourth notch 1004 for the detection end of the temperature controlled switch to extend into to be close to the tubular heater; and a mounting hole 1005 fixedly connected with the temperature controlled switch. The arrangement of the fourth notch 1004 and the mounting hole 1005 enables the temperature controlled switch to be quickly mounted on the fixing member 100, and thus the temperature controlled switch is easy to assemble.

In one embodiment, the number of the first fixing portions is at least two, so as to mount a plurality of wiring components to meet the wiring requirement of the tubular heater.

Further, at least two first fixing portions are located on the same side of the fixing member 100, so that the generator body 1 can be arranged at a linear speed, and winding of the wire harness is avoided.

In one embodiment, the number of the second fixing portions is at least two, so as to install at least two temperature control switches with different temperature thresholds. Further, the temperature control switches include an automatic temperature control switch 91 and a manual temperature control switch 92. The automatic temperature control switch 91 and the manual temperature control switch 92 correspond to the positions of the thick film heating assembly 20. In one embodiment, the automatic temperature control switch 91 is provided with a bimetallic strip capable of bending and deforming, and when the temperature of the bimetallic strip reaches a certain temperature, the bimetallic strip bends and deforms to disconnect the power supply; when the temperature of the bimetallic strip is lower than the temperature lower limit of the bending deformation of the bimetallic strip, the bimetallic strip is electrified after the bending deformation is recovered, and the thick film heating component 20 is started. Further, the automatic temperature control switch is a 140 ℃ automatic temperature control switch; when the temperature of the bimetallic strip reaches 140 ℃, the bimetallic strip bends and deforms to disconnect the power supply. The manual temperature control switch 92 is a manual operation temperature control switch which is turned on or off when the automatic temperature control switch 91 is not turned on due to malfunction or other factors when the temperature of the detection object reaches a set temperature threshold value. If the manual temperature control switch 92 is not turned on when the temperature of the detected object reaches 160 ℃, the automatic temperature control switch is turned off manually.

Further, at least two second fixed parts are located tubular heater both sides, when being favorable to the miniaturized design of generator body 1, mounting 100 is small-size, avoids being close to because of a plurality of second fixed parts set up the position, and the distance is little between the adjacent temperature detect switch and causes mutual interference.

In one embodiment, the fixing member 100 has a square outer contour, is beautiful, and has four sidewalls for disposing the first fixing portion and/or the second fixing portion, and the structures on different sidewalls do not interfere with each other.

In an embodiment, the heating structure body further includes a sealing cover 70 fixed to the opening end of the tubular heater far from the housing 10 to close the opening end, and the sealing cover 70 covers one end of the channel 21 far from the cavity 11, that is, the sealing cover 70 covers the bottom end of the channel 21, when the scale deposited at the bottom of the channel 21 reaches a predetermined amount, the sealing cover 70 can be removed from the tubular heater, and the inner wall of the sealing cover 70 and the inner surface of the channel 21 can be cleaned, so that the cleaning is convenient. Further, the sealing cover 70 is provided with a second clamping groove, and the bottom of the tubular heater is clamped in the second clamping groove so as to be fixed with the sealing cover 70 and be convenient to detach. Further, the tubular heater is a thick film heating element 20 in a pipeline structure, one end of the thick film heating element 20 far away from the cavity 11 is sealed by a sealing cover 70, and dirt in the channel 21 and on the inner wall of the sealing cover 70 can be cleaned by removing the sealing cover 70.

In one embodiment, as shown in fig. 3 and 4, the tubular heater is a thick film heating assembly 20 in a tubular configuration. Specifically, as shown in fig. 7, the thick film heating assembly 20 includes a heat conducting plate 22, an inner insulating medium layer 23, a resistance heating layer 24, and an outer insulating layer (not shown in the figure) arranged in sequence, wherein the heat conducting plate 22 is located on the side facing the cavity 11; the thick film heating assembly 20 further comprises an electrode terminal 25 electrically connected to the resistance heating layer 24 for electrically connecting to a control circuit of the clothes treatment apparatus, and the resistance heating layer 24 is switched on or off by switching on or off the control circuit, i.e. the heating of the resistance heating layer 24 is turned on or off by switching on or off the control circuit. Thick film heating element 20 circular telegram back resistance heating layer 24 sends the heat, and heat conduction to heat-conducting plate 22 for heat-conducting plate 22 temperature risees, heats the water that contacts with heat-conducting plate 22, and in addition, the heat-conducting plate 22 that the temperature risees makes heat-conducting plate 22 week side ambient air temperature risees, and indirect water to in the casing 10 heats. The thermally conductive plate 22 is an insulating member having a high thermal conductivity, and in one embodiment, the thermally conductive plate 22 is a stainless steel substrate. The inner insulating dielectric layer 23 protects the thermally conductive plate 22 from being electrically neutral, which may lead to the water within the housing 10 being electrically charged. The outer insulating layer enables the outer side of the resistance heating layer 24 to be insulated from the outside, and electricity safety is guaranteed. The heat-conducting plate 22 forms the inner wall structure of the duct structure, i.e. the channel 21; the outer insulating layer forms an outer wall structure of the pipeline structure.

In addition, conventional heating components on the market at present comprise a common heating pipe, a quartz heating pipe, a nickel-chromium alloy heating wire and an electromagnetic induction heating component. Wherein, the common heating pipe is easy to form scale, the heating wire is easy to blow, the use is unsafe and the service life is short; the quartz heating pipe is fragile, low in pressure bearing, slow in heat conduction and short in service life; the nickel-chromium alloy heating wire has strict requirements on water quality; the electromagnetic induction heating unit has strong electromagnetic radiation, harms human health, and may cause interference with electronic devices or systems in the laundry treating apparatus, resulting in a reduction in its use performance. A steam generator for clothes treatment device at present, if heating element easily ties the incrustation scale, it is unrealistic and difficult realization to dismantle clothes treatment device and clear up in order to take out steam generator. If the heating element is fragile, it cannot be replaced. And because the clothing processing apparatus is used for processing the clothing, the quality of water is not good for drinking water, and it is costly and unrealistic to control the quality of water because of the requirement of heating element to quality of water. And thick film heating element 20 adopts screen printing technique to print interior dielectric layer 23, resistance heating layer 24, outer insulating layer in proper order on heat-conducting plate 22 and form in this embodiment, and the heat-conduction distance from resistance heating layer 24 to heat-conducting plate 22 is short, therefore the thermal resistance is little, and the thermal response speed is fast, and the heat can in time be conducted away, and whole thick film heating element 20's surface temperature can not be too high, and the safety in utilization is high, and difficult incrustation scale, also not high to the water quality requirement. The thick film heating component 20 is formed by printing an inner insulating medium layer 23, a resistance heating layer 24 and an outer insulating layer on a heat conducting plate 22 by adopting a screen printing technology and sintering at high temperature, and has the advantages of mature and reliable process, small structure and easy cleaning. The shape and size of the thick film heating component 20 can be set according to the requirement, and the thick film heating component is realized by changing the formation and size of the heat conducting plate 22, the design is flexible, the temperature rises quickly during heating, the heating can be carried out by electrifying, and the heating efficiency is high.

In one embodiment, the channel 21 is cylindrical, and the surface of the channel 21 is smooth and is not easy to deposit scale.

Example 2

The utility model provides a steam generator, as shown in fig. 3, comprising a generator body 1 arranged in a clothes processing device, wherein the generator body 1 comprises a shell 10; further comprising a heating structure for a steam generator as described above; the shell 10 is provided with a cavity 11 for containing steam; the cavity 11 communicates with the passage 21 so that water in the cavity 11 flows into the passage 21 to be heated to form steam. Specifically, liquid water is introduced into the cavity 11 from the water inlet 14 of the housing 10, and the liquid water flows into the channel 21 from the cavity 11, and contacts the surface of the channel 21 as a heating surface to be heated to form steam.

Further, the tubular heater extends vertically to make the deposit on the surface of the channel 21 fall down under gravity, the deposit on the surface of the tubular heater is not easy to deposit scale, the cleanliness is kept, and the heating effect and the service life are further ensured.

The cross-sectional area of the channel 21 is small to increase the water level in the channel 21 when the same amount of liquid water is introduced into the channel 21, so that the liquid water in the channel 21 is fully contacted with the heating end of the tubular heater, and the heating is accelerated. When the clothes processing device starts operations such as steam drying, steam decontamination, steam wrinkle removal, steam sterilization and the like which need steam processing, liquid water led in from a water inlet 14 of the generator body 1 firstly enters the cavity 11 and flows into the channel 21 from the cavity 11, the liquid water in the channel 21 contacts the tubular heater, the liquid water is heated to form steam, the steam is discharged from a gas outlet 15 on the shell 10 and finally enters a clothes containing barrel of the clothes processing device, and the steam is provided for clothes in the clothes containing barrel.

In one embodiment, at least one restriction is disposed in the cavity 11 to block the water level in the cavity 11 from dropping, so as to reduce the noise generated by the liquid water in the cavity 11 flowing into the channel 21. Specifically, the generator body 1 is provided with a water inlet 14, and the water inlet 14 is communicated with the cavity 11 so as to introduce liquid water into the generator body 1; the generator body 1 is provided with an air outlet 15 for discharging the steam inside the cavity 11 and/or the channel 21 outside the generator body 1. Inject liquid water into cavity 11 from water inlet 14, liquid water in cavity 11 flows in passageway 21, it finishes to pour into when liquid water, and partial liquid water is located cavity 11 in, open the tubular heater, liquid water forms steam and consumes, the water level in cavity 11 descends, through setting up an at least current-limiting portion, the velocity of flow of rivers in cavity 11 is blockked to a certain extent, and then reduce the velocity of flow in rivers entering passageway 21, and then reduce the swirl that produces when rivers flow in passageway 21 and are close to the entry of cavity 11 one end, form the noise decibel because of the swirl in order to reduce. Specifically, the flow restriction part and the inner contour of the cavity 11 form a cavity, the cavity is provided with a notch for water to flow out, and when the water level in the cavity 11 is lowered, the water in the cavity needs to flow out through the notch, so that the flow rate is controlled. Furthermore, the number and the size of the notches of the flow limiting part are controlled to control the flow limiting force of the flow limiting part on water flow. Further, as shown in fig. 3, 4, and 6, the number of the flow restrictors in the cavity 11 is at least two, and the flow restrictor structures at different positions may be the same or different. Specifically, the cavity 11 is provided with at least a first flow restriction 161 and a second flow restriction 162. The first flow restriction 161 includes a first cavity 1611 and a fifth gap 1612, when the water level in the cavity 11 decreases, the water in the first cavity 1611 flows out through the fifth gap 1612 and flows to the channel 21, and the fifth gap 1612 restricts the flow rate of the water in the first cavity 1611, thereby controlling the flow rate of the water in the cavity 11 flowing into the channel 21. The second flow restriction portion 162 includes the second chamber 1621, two sixth notches 1622, and the increase in the number of the sixth notches 1622 has improved the velocity of water flow outflow in the second chamber 1621 to a certain extent. Further, the second flow restriction portion 162 further includes two diversion channels 1623 respectively communicating with a sixth gap 1622, and controlling the speed of the water flowing out of the second cavity 1621 by limiting the inner contour size of the diversion channel 1623.

In one embodiment, as shown in fig. 4 and 8, the water inlet 14 and the air outlet 15 of the generator body 1 are located at one side of the cavity 11, so as to rationally design the structure of the housing 10, and to miniaturize the housing 10. Further, the water inlet 14 and the air outlet 15 are close to the top of the housing 10, and the distance between the water inlet 14 and the bottom wall of the cavity 11 is increased, so that the cavity 11 contains more liquid water.

In an embodiment, as shown in fig. 3 and 4, the generator body 1 is provided with a mounting groove 193 for mounting the liquid level sensor 30, the detection end of the liquid level sensor 30 extends into the cavity 11 of the housing 10 from the mounting groove 193 and is clamped in the mounting groove 193, and the current water level information in the housing 10 is obtained through the liquid level sensor 30.

Further, the mounting groove 193 of the generator body 1 for mounting the liquid level sensor 30 is disposed away from the water inlet 14 and/or the air outlet 15, so as to reduce the influence on the accuracy of the detection result of the liquid level sensor 30 when water is injected from the water inlet 14, or reduce the damage influence of the steam temperature around the air outlet 15 on the liquid level sensor 30.

In one embodiment, the cavity 11 communicates with the mounting groove 193; a plurality of second baffles 13 are arranged in the cavity 11, and form a second surrounding wall structure surrounding the outer contour of one side of the mounting groove 193 with the inner contour of the cavity 11, so as to prevent the steam in the cavity 11 from contacting the liquid level sensor 30, and the steam temperature is high, so as to avoid influencing the service life of the liquid level sensor 30. A space is left between the bottom of the second baffle 13 and the inner wall of the housing 10 for liquid water to enter, so that the liquid level sensor 30 can detect the water level. The distance between the bottom of the second baffle 13 and the inner wall of the casing 10 is controlled so as to reduce the influence of the steam on the liquid level sensor 30 while the liquid water is in contact with the liquid level sensor 30.

In one embodiment, as shown in fig. 3 and 5, the cavity 11 communicates with the air outlet 15 of the generator body 1; a plurality of first baffles 12 are arranged in the cavity 11, and form a first surrounding wall structure which partially surrounds the air outlet 15 with the inner contour of the cavity 11;

the steam that liquid water formed through tubular heater heating is the mixture of gaseous state hydrone and liquid hydrone, if direct export from gas outlet 15, then steam humidity is higher, be unfavorable for the drying process of clothing behind the contact clothing, and then set up first wall structure, the first wall structure of steam contact in the cavity 11, the heat of steam is behind first wall structure conduction, liquid hydrone condenses on first wall structure surface, with liquid hydrone and the separation of gaseous state hydrone in the steam, reduce the liquid hydrone that gas outlet 15 exported. The content of liquid water molecules in the steam led out from the air outlet 15 is reduced, the steam may still contain the liquid water molecules, but the amount of the liquid water molecules is reduced, so that the influence of the liquid water molecules on the drying process of the clothes is reduced.

Further, as shown in fig. 3, the first baffle 12 is vertically disposed; the first baffle 12 is located opposite to at least one restriction provided to the cavity 11. In the process that the liquid water is heated by the tubular heater to form steam which is a mixture of gaseous water molecules and liquid water molecules and flows to the air outlet 15, the mixture of the gaseous water molecules and the liquid water molecules contacts the first surrounding wall structure formed by the first baffle plate 12 and the inner wall of the shell 10, so that the liquid water molecules are condensed to form liquid water when meeting cold and are removed from the mixture of the gaseous water molecules and the liquid water molecules. By arranging the first baffle 12 opposite to the at least one flow restriction part, the mixture of the gaseous water molecules and the liquid water molecules flowing to the gas outlet 15 contacts the flow restriction part to make the liquid water molecules condense when encountering cold, so as to improve the water-vapor separation effect on the mixture of the gaseous water molecules and the liquid water molecules near the gas outlet 15. Further, the first baffle 12 and the sidewall structure corresponding to the position of the restriction are longitudinally offset to leave enough space for the steam to pass through and flow into the air outlet 15. Specifically, the first baffle 12 is disposed opposite to and offset from the first restrictor 161.

Further, the passage 21 is disposed perpendicular to the horizontal plane, and the accumulated matter on the surface of the passage 21 falls down under its own weight. The amount of the liquid water in the cavity 11 is gradually reduced along with the change of the liquid water into steam, the water level is reduced, the liquid water flows downwards along the profile of the channel 21, meanwhile, the water remained on the surface of the part of the channel 21 above the water level can gradually flow downwards under the self gravity until the water is converged into the water body at the bottom of the channel 21, water drops accumulated on the surface of the channel 21 due to the reduction of the water level are quickly removed, the accumulated amount of the liquid water on the surface of the channel 21 is reduced, and the amount of scale formed on the surface of the channel 21 is reduced to a certain extent. In addition, the scale generated on the surface of the channel 21 falls under the self-gravity, and the scale on the surface of the thick channel 21 is removed to a certain extent. In addition, when the casing 10 supplyes liquid water, water enters the cavity 11 from the water inlet 14 of the casing 10 and then flows into the channel 21, and in the process that water flows downwards, the surface of the channel 21 which is vertically arranged can be washed away, the surface of the channel 21 is cleaned to a certain degree, the cleanliness of the surface of the channel 21 is improved, and the influence on the heating performance of the channel 21 due to pollution is reduced.

In one embodiment, as shown in fig. 3, the generator body 1 comprises a housing 10, a cavity 11 being provided in the housing 10; the shell 10 and the tubular heater are clamped together to form the shell structure of the generator body 1, so that the size of the space inside the generator body 1 meets the requirement of the clothes treatment device for steam, the overall size of the generator body 1 is reduced to a certain degree, the space inside the clothes treatment device occupied by the generator body 1 is reduced, and the application range of the generator body 1 is widened. In one embodiment, the tubular heater is a cylindrical pipe structure, the tubular heater is fixed on the housing 10 through a flange 40, the tubular heater is sleeved in the flange 40, and a plurality of fixing holes are uniformly distributed around the flange 40 to be fixed with the housing 10.

In one embodiment, as shown in fig. 3 and 4, the housing 10 is rectangular, the water inlet 14 and the air outlet 15 are located on the same side of the housing 10, the water inlet 14 is opposite to the liquid level sensor 30, and the liquid level sensor 30 is fixed on the top wall of the housing 10 away from the water inlet 14. The housing 10 is provided with two flow restrictions, including a first flow restriction 161 and a second flow restriction 162. The first flow limiting part 161 is opposite to the first baffle 12, and the second flow limiting part 162 is opposite to the liquid level sensor 30, so that the first flow limiting part 161 and the second flow limiting part 162 are distributed reasonably, and the flow limiting effect of the flow limiting parts is reduced while the flow is limited. The number of the sixth notches 1622 of the second flow limiting part 162 corresponding to the position of the liquid level sensor 30 is greater than the number of the fifth notches 1612 of the first flow limiting part 161, so that the water outlet speed of the second cavity 1621 is increased to a certain extent, and the detection result of the liquid level sensor 30 is prevented from being influenced by too low water outlet speed of the second cavity 1621.

As shown in fig. 3, 4, and 8, the housing 10 includes a first housing 171 and a second housing 172; the first housing 171 and the second housing 172 together sandwich the cavity 11. Further, the first housing 171 is detachably coupled to the second housing 172 to facilitate cleaning of the cavity 11.

In one embodiment, the housing 10 further has a pressure relief opening (not shown) for opening the pressure relief opening when the pressure inside the housing 10 reaches a predetermined upper limit to reduce the pressure inside the housing 10. Further, the pressure relief opening is provided with a pressure relief valve, when the pressure in the shell 10 exceeds a pressure threshold set by the pressure relief valve, the pressure relief opening is automatically opened to relieve the pressure, and the pressure in the shell 10 is ensured to be below the pressure threshold; when the pressure in the shell 10 is less than or equal to the pressure threshold set by the pressure relief valve, the pressure relief is automatically closed.

In one embodiment, as shown in fig. 3 and 4, the generator body 1 further comprises a sealing tube 60 for sealing the junction of the housing 10 and one end of the tubular heater, so that the cavity 11 and the channel 21 form a sealed space inside the generator body 1 for containing liquid water and/or steam.

In one embodiment, as shown in fig. 3, 4 and 8, the generator body 1 is provided with a liquid level sensor 30 to obtain the current water level information in the housing 10; the sensing end of the level sensor 30 extends into the cavity 11 from the mounting groove 193 of the housing 10 and is mounted in the mounting groove 193. Specifically, the liquid level sensor 30 is a high-low level liquid level sensor, and a detection end of the liquid level sensor extends into the cavity 11 to detect the water level condition in the housing 10. Further, the liquid level sensor 30 is electrically connected to the alarm module to alarm when detecting that the current water level in the housing 10 reaches the high liquid level threshold or the low liquid level threshold set by the liquid level sensor 30, and remind the user to adjust the water level in the generator body 1. In one embodiment, the liquid level sensor 30 is a three-pin level switch, which is an electrode type liquid level switch having three pole rods with different heights, and when the water in the housing 10 touches the pole rods of the three-pin level switch to conduct electricity and detect a signal, the current water level information in the housing 10 is also output to the user. Further, a second sealing ring 80 is provided at the assembly position of the three-pin water level switch and the mounting groove 193 to perform sealing, thereby improving the sealing performance inside the housing 10.

In one embodiment, as shown in fig. 3 and 4, the generator body 1 is provided with a temperature-controlled switch for cutting off the power supply of the tubular heater when the temperature of the tubular heater exceeds a temperature threshold. Further, the tubular heater is a thick film heating assembly 20. Further, the temperature control switches include an automatic temperature control switch 91 and a manual temperature control switch 92. The automatic temperature control switch 91 and the manual temperature control switch 92 correspond to the positions of the thick film heating assembly 20. In one embodiment, the automatic temperature control switch 91 is provided with a bimetallic strip capable of bending and deforming, and when the temperature of the bimetallic strip reaches a certain temperature, the bimetallic strip bends and deforms to disconnect the power supply; when the temperature of the bimetallic strip is lower than the temperature lower limit of the bending deformation of the bimetallic strip, the bimetallic strip is electrified after the bending deformation is recovered, and the thick film heating component 20 is started. Further, the automatic temperature control switch is a 140 ℃ automatic temperature control switch; when the temperature of the bimetallic strip reaches 140 ℃, the bimetallic strip bends and deforms to disconnect the power supply. The manual temperature control switch 92 is a manual operation temperature control switch which is turned on or off when the automatic temperature control switch 91 is not turned on due to malfunction or other factors when the temperature of the detection object reaches a set temperature threshold value. If the manual temperature control switch 92 is not turned on when the temperature of the detected object reaches 160 ℃, the automatic temperature control switch is turned off manually. Further, a temperature sensor is arranged in the housing 10 to detect the temperature in the housing 10, when the temperature of the thick film heating assembly 20 exceeds a temperature threshold value, the thick film heating assembly 20 is dried, and when the temperature in the housing 10 is too high, the user is informed to judge whether to manually power off.

The wiring component 50 of the heating structure body is used for electrically connecting the electrode terminal 25 of the thick film heating component 20 with the control circuit of the clothes processing device, and the resistance heating layer 24 of the thick film heating component 20 is switched on or off by switching on and off of the control circuit, so that the wiring of the thick film heating component 20 is facilitated.

Example 3

The utility model provides a washing machine, which comprises a box body, wherein a steam generator of the clothes treatment device is arranged in the box body; the water inlet 14 of the generator body 1 is connected with a water pipe in the box body of the washing machine, and the air outlet 15 of the generator body 1 is communicated with the inner barrel of the washing machine so as to provide steam for the inner barrel of the washing machine. A user starts a steam decontamination mode, a steam drying mode, a steam wrinkle removal mode or a steam sterilization mode of the washing machine, water with a preset amount is introduced into a water inlet 14 of the generator body 1, the tubular heater is started to heat, the water is heated by contacting with the tubular heater to form steam, and the steam is provided for the inner barrel of the washing machine, so that the decontamination function, the drying function, the wrinkle removal function or the sterilization function is realized.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the utility model can be smoothly implemented by the ordinary technicians in the industry according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims (16)

1. A heating structure for a steam generator comprises a heating structure body fixed to the bottom of a housing (10) of a generator body (1); characterized in that, the heating structure body includes:

a tubular heater provided with a passage (21) for forming a heating region; the channel (21) is communicated with the cavity (11) of the shell (10);

a fastener (100) in a sleeve configuration; the fixing piece (100) is provided with a tubular hollow area so as to be sleeved on the outer peripheral side of the tubular heater;

and the wiring assembly (50) is fixed on the fixing piece (100) so as to electrically connect the tubular heater with the circuit of the generator body (1).

2. A heating structure for a steam generator according to claim 1, wherein the fixing member (100) is provided with a first fixing portion to be engaged with the terminal assembly (50).

3. A heating structure for a steam generator according to claim 1, wherein the fixing member (100) comprises a first housing (1001), a second housing (1002); the first cover (1001) is detachably connected with the second cover (1002) to form the hollow area.

4. A heating structure for a steam generator according to claim 3, wherein the hollow region inner profile abuts against an outer peripheral side of the tubular heater.

5. A heating structure for a steam generator according to claim 3, wherein the first and second housings (1001, 1002) are provided with a first abutting portion (10011) and a second abutting portion (10021), respectively; the first abutting portion (10011) abuts against the second abutting portion (10021) and is connected thereto by a fastener.

6. A heating structure for a steam generator according to claim 3, wherein the fixing member (100) is provided with two first notches (1003) for respectively allowing the lugs (41) at both sides of the flange (40) in the hollow region to be fixed to the housing (10) after being protruded therefrom.

7. A heating structure for a steam generator according to claim 3, wherein the first and second covers (1001, 1002) are provided with a second and third notch (10012, 10022), respectively; the second notch (10012) and the third notch (10022) are oppositely formed in position and used for fixing a first fixing part of the wiring assembly (50) so as to be respectively connected with the first clamping grooves (51) on two sides of the wiring assembly (50) in a clamping mode.

8. A heating structure for a steam generator according to claim 1, wherein the heater structural body further comprises a temperature controlled switch fixed with the second fixing portion of the fixing member (100).

9. A heating structure for a steam generator according to claim 8, wherein the second fixing portion comprises:

a fourth notch (1004) for the detection end of the temperature control switch to extend into so as to be close to the tubular heater;

and the mounting hole (1005) is fixedly connected with the temperature control switch.

10. A heating structure for a steam generator according to claim 2, wherein the number of the first fixing parts is at least two.

11. A heating structure for a steam generator according to claim 8, wherein the number of the second fixing portions is at least two to install at least two temperature control switches different in temperature threshold.

12. A heating structure for a steam generator according to claim 11, wherein at least two of the second fixing portions are located at both sides of the tubular heater.

13. A heating structure for a steam generator according to claim 1, wherein the heating structure body further comprises a sealing cover (70) fixed to an open end of the tubular heater away from the housing (10).

14. A steam generator comprising a generator body (1) arranged within a laundry treatment device, characterized in that said generator body (1) comprises a casing (10); further comprising a heating structure for a steam generator according to any one of claims 1 to 13; the shell (10) is provided with a cavity (11) for containing steam; the cavity (11) is communicated with the channel (21) so that water in the cavity (11) flows into the channel (21) to be heated to form steam.

15. A steam generator according to claim 14, characterized in that the channels (21) are arranged perpendicular to the horizontal plane.

16. A washing machine comprising a cabinet, wherein a steam generator according to claim 14 or 15 is provided in the cabinet; the water inlet (14) of the generator body (1) is connected with a water pipe in the washing machine box body, and the air outlet (15) of the generator body (1) is communicated with the washing machine inner barrel to provide steam for the washing machine inner barrel.

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