CN114182495A - Heating assembly for steam generator, steam generator and washing machine - Google Patents
Heating assembly for steam generator, steam generator and washing machine Download PDFInfo
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- CN114182495A CN114182495A CN202010964094.XA CN202010964094A CN114182495A CN 114182495 A CN114182495 A CN 114182495A CN 202010964094 A CN202010964094 A CN 202010964094A CN 114182495 A CN114182495 A CN 114182495A
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- steam generator
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 289
- 238000005406 washing Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 138
- 239000007788 liquid Substances 0.000 claims abstract description 86
- 238000007789 sealing Methods 0.000 claims description 35
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- 238000003825 pressing Methods 0.000 claims description 3
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- 230000005484 gravity Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
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- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 2
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- 238000007650 screen-printing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 235000020188 drinking water Nutrition 0.000 description 1
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- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
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Images
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/40—Steam generating arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
The invention provides a heating assembly for a steam generator, which comprises a heating assembly body arranged on a shell of a generator body, wherein the heating assembly body comprises a heating element which is of a plate-shaped structure and used for heating liquid water in the shell to obtain steam; the heating element is fixed at an opening arranged on the shell of the generator body; and the fixing plate is fixed on the outer side of the shell and abuts against the outer surface of the heating element so as to form a mounting structure of the heating element on the surface of the shell. The invention also provides a steam generator and a washing machine. Can stabilize swiftly install heating element in the opening part of the shell of generator body for the common centre gripping vacuole formation of heating element and shell reduces the space that heating element occupy the cavity, and the cavity utilization ratio of shell is high, is favorable to the miniaturized design of shell.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a heating assembly for a steam generator, the steam generator and a washing machine.
Background
The clothes processing device provides functions of steam decontamination, steam drying, steam wrinkle removal, steam sterilization and the like through the steam generator. Existing steam generators typically include a housing to hold a heating element and to form a cavity to contain liquid water and steam, and a heating element. In the existing steam generator, scale is easily generated on the surface of the heating element in the heating process of water contacting the heating element; and the shell needs enough space to contain the heating element, liquid water and steam, so that the shell has larger size, the steam generator has larger size, the internal space of the washing machine is limited, and the application of the steam generator with larger size has limitation.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a heating assembly for a steam generator, which can firmly and quickly install a heating element at an opening of a shell of a generator body, so that the heating element and the shell are clamped together to form a cavity, and the miniaturization design of the shell is facilitated.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A first object of the present invention is to provide a heating assembly for a steam generator, comprising a heating assembly body provided on a housing of a generator body, the heating assembly body comprising:
the heating element is of a plate-shaped structure and is used for heating the liquid water in the shell to obtain steam; the heating element is fixed at an opening arranged on the shell of the generator body;
and the fixing plate is fixed on the outer side of the shell and abuts against the outer surface of the heating element so as to form a mounting structure of the heating element on the surface of the shell.
Preferably, the heating assembly body is disposed at one side of the housing.
Preferably, the fixing plate includes a first abutting portion connected to the plate body; the first abutment is used to form a pressing force of the outer surface of the heating element.
Preferably, the number of said first abutments is at least two.
Preferably, the heating assembly body further comprises a first sealing ring arranged on the outer periphery side of the heating element; the outer periphery side of the first sealing ring abuts against the inner contour of the opening so as to seal the assembly position of the heating element and the opening.
Preferably, two first abutting portions of the fixing plate, which are opposite in position, respectively abut against two inner side walls of the first sealing ring.
Preferably, the fixing plate is provided with a notch for the terminal of the heating element to pass through so as to be electrically connected with the external circuit of the shell.
Preferably, the fixing plate covers an outer surface of the heating element.
Preferably, the heating element is a thick film heating assembly.
A second object of the present invention is to provide a steam generator including a generator body provided in a laundry treating apparatus, the generator body including:
a housing provided with a cavity for containing liquid water and/or steam; the shell is provided with an opening;
a heating assembly body for a heating assembly of a steam generator as described above; the heating element is mounted at the opening.
Preferably, the bottom of the shell is of a flat structure longitudinally so as to reduce the cross-sectional area of the bottom space of the cavity.
Preferably, the cavity peripheral side wall corresponding to the position of the heating element is flared along the airflow flowing direction.
Preferably, the shell is provided with an air outlet and a water inlet; the air outlet and the water inlet are positioned at the top of the shell.
Preferably, a plurality of first baffles are arranged in the outer shell, and form a first enclosure wall structure which partially encloses the air outlet of the outer shell with the inner wall of the outer shell;
the steam in the cavity contacts the first enclosure wall structure, and after the heat of the steam is conducted through the first enclosure wall structure, liquid water molecules are condensed on the surface of the first enclosure wall structure, so that the liquid water molecules in the steam are separated from the gaseous water molecules, and the liquid water molecules led out from the air outlet are reduced.
Preferably, the housing is provided with a mounting groove for mounting the liquid level sensor.
Preferably, a second baffle is arranged in the housing, and a second enclosing wall structure surrounding the outer periphery of the liquid level sensor mounted in the mounting groove is formed with the inner wall of the housing, so as to prevent steam in the cavity from contacting the liquid level sensor.
The third purpose of the invention is to provide a washing machine, which comprises a box body, wherein the generator body of 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 invention has the beneficial effects that:
according to the heating assembly for the steam generator, the heating element can be stably and quickly mounted at the opening of the shell of the generator body, so that the heating element and the shell are clamped together to form the cavity, the space occupied by the heating element in the cavity is reduced, the utilization rate of the cavity of the shell is high, the miniaturization design of the shell is facilitated, the size of the space occupied by the shell in the clothes treatment device is reduced, and the application range is wide; the heating element is in a plate-shaped structure, is thin and small in size, and has high space utilization rate.
In a preferred scheme, the heating assembly body is arranged on one side of the shell, namely the opening is arranged on the side wall of the shell, and the heating element is vertically fixed, so that the accumulated substances on the surface of the heating element fall under the action of gravity, and the accumulated amount of scale on the surface of the heating element is reduced to a certain degree.
In a preferred scheme, the heating element is a thick film heating assembly, the thick film heating assembly is small in size and high in space utilization rate, and miniaturization of the whole size of the generator body is facilitated.
The steam generator provided by the invention has the advantages that the overall size of the generator body is reduced, so that the generator body occupies less internal space of the clothes treatment device, and the application range is wide.
In a preferred scheme, the bottom of the shell is of a flat structure longitudinally, so that the water level of liquid water injected into the cavity is improved, the liquid water in the cavity is in full contact with the heating element vertically arranged in the cavity, and the heating efficiency is improved. And the flat structure at the bottom of the shell reduces the size of the shell to a certain extent and reduces the space occupied by the shell in the clothes treatment device.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail 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 limiting the invention. In the drawings:
FIG. 1 is a schematic perspective view of a heating element body according to the present invention;
FIG. 2 is a schematic diagram of an exploded structure of the generator body of the present invention;
FIG. 3 is a cross-sectional view of a generator body of the present invention;
FIG. 4 is a schematic perspective view of the housing of the present invention;
FIG. 5 is a schematic view of an assembly structure of the first housing and the liquid level sensor according to the present invention;
FIG. 6 is an exploded view of a thick film heating assembly of the present invention;
FIG. 7 is a schematic perspective view of a thick film heating assembly of the present invention;
FIG. 8 is a schematic perspective view of a first seal ring according to the present invention;
FIG. 9 is a schematic perspective view of a generator body according to the present invention;
fig. 10 is a perspective view of a fixing plate according to the present invention.
In the figure: 1. a generator body;
10. a housing; 11. a cavity; 111. a first cavity; 112. a second cavity; 12. an opening; 121. clamping the bulges; 122. a second abutting portion; 13. an air outlet; 14. a water inlet; 15. a first housing; 16. a second housing; 17. a first baffle plate; 18. a second baffle; 19. mounting grooves;
20. a thick film heating assembly; 21. a heat conducting plate; 22. an inner insulating dielectric layer; 23. a resistance heating layer; 24. an electrode terminal; 25. a wiring assembly; 251. a wiring member; 252. a ground member; 26. an installation part;
30. a first seal ring; 31. a first card slot; 32. a second card slot;
40. a fixing plate; 41. a notch; 42. a first abutting portion; 43. a plate body;
50. a liquid level sensor;
60. an automatic temperature control switch;
70. a manual temperature control switch;
80. a second seal ring;
90. a fixed part.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. 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 any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example 1
The present invention provides a heating element for a steam generator, as shown in fig. 1, 2 and 3, comprising a heating element body disposed on a housing 10 of a generator body 1, the heating element body comprising:
a heating element having a plate-shaped structure for heating the liquid water in the housing 10 to obtain steam; the heating element is fixed at an opening 12 arranged on a shell 10 of the generator body 1; the heating element with the plate-shaped structure is thin, the contact area of the heating element and the liquid water in the cavity 11 is large, and the heating speed is high; the heating element is arranged at the opening 12 and forms a cavity 11 of the generator body 1 together with the shell 10 for containing liquid water and/or steam;
and a fixing plate 40 fixed outside the housing 10 and abutting against the outer surface of the heating element to form a mounting structure of the heating element on the surface of the housing 10, and blocking the heating element from coming out of the opening 12, so as to stabilize the mounting of the heating element.
In one embodiment, as shown in fig. 2 and 3, the heating element body is disposed on one side of the housing 10. Namely, the side wall of the shell 10 is provided with an opening 12, so that the heating assembly body is vertically arranged, and further, the accumulated objects on the surface of the heating element fall down under the self gravity; wherein, the accumulated materials on the surface of the heating element comprise accumulated water and formed scale. Along with liquid water becomes steam, the volume of the liquid water in the cavity 11 of generator body 1 reduces gradually, the water level descends, liquid water flows downwards along the heating element surface, simultaneously, the remaining water in the position surface that the heating element is located more than the water level can flow downwards gradually under its self gravity until meeting in the water that is located cavity 11 bottom, get rid of fast because of the drop in water on water level decline and long-pending in the water on heating element surface, reduce the volume of remaining of the liquid water in heating element surface, the volume that the heating element surface formed the incrustation scale reduces to a certain extent. In addition, the scale generated on the surface of the heating element falls under the self-gravity, and the scale on the surface of the heating element is removed to a certain degree.
In one embodiment, as shown in fig. 3 and 10, the fixing plate 40 includes a first abutting portion 42 connected to a plate body 43; the first abutting portion 42 abuts against the outer surface of the heating element for forming a pressing force of the outer surface of the heating element, so that the heating element is not easily removed from the opening 12 of the housing 10. In addition, the first abutting portion 42 allows the plate body 43 to have a space between the outer surfaces of the heating elements, which is beneficial to heat dissipation of the outer surfaces of the heating elements.
Further, the number of the first abutting portions 42 is at least two to stabilize the abutting force between the plate body 43 and the outer surface of the heating element. Further, the at least two first abutments 42 are located opposite to each other, further stabilizing the abutment force between the plate body 43 and the outer surface of the heating element.
In one embodiment, as shown in fig. 2 and 3, the heating assembly body further includes a first sealing ring 30 disposed on an outer peripheral side of the heating element; the outer periphery of the first sealing ring 30 abuts against the inner contour of the opening 12 to seal the assembling position of the heating element and the opening 12, so as to improve the sealing performance of the cavity 11 and prevent air leakage and liquid leakage. Further, the first sealing ring 30 is engaged with the contour of the opening 12 to facilitate the mounting and dismounting of the heating element, and to facilitate the replacement or maintenance.
Further, as shown in fig. 3 and 8, a first engaging groove 31 is provided on the inner circumferential side of the first seal ring 30, and a second engaging groove 32 is provided on the outer circumferential side of the first seal ring 30, so that the inner circumferential side and the outer circumferential side of the first seal ring 30 are engaged with the circumferential side of the heating element and the opening 12 of the housing 10, respectively, thereby facilitating the attachment and detachment of the heating element while sealing the assembly of the heating element and the opening 12, and further facilitating the replacement or maintenance of the heating element. Further, the second locking groove 32 of the first sealing ring 30 is locked with the locking protrusion 121 provided on the opening 12 of the housing 10.
In one embodiment, as shown in fig. 3, two first abutting portions 42 of the fixing plate 40, which are located opposite to each other, respectively abut against two opposite inner sidewalls of the first sealing ring 30, so as to stabilize the abutting between the first abutting portions 42 and the heating element.
In one embodiment, as shown in fig. 1, 2 and 10, the fixing plate 40 is provided with a notch 41 for the terminal of the heating element to pass through for electrical connection with the circuit outside the housing 10, so as to facilitate the wiring of the heating element.
In one embodiment, the mounting plate 40 covers the outer surface of the heating element to protect the heating element from damage during shipping or installation.
In one embodiment, the heating element is a thick film heating assembly 20, and the heating end of the thick film heating assembly 20 has a large surface area and can be heated quickly. Specifically, as shown in fig. 6 and 7, the thick film heating assembly 20 includes a heat conducting plate 21, an inner insulating medium layer 22, a resistance heating layer 23, and an outer insulating layer (not shown in the figure) disposed in sequence, wherein the heat conducting plate 21 is located on a side facing the cavity 11; the thick film heating assembly 20 further includes an electrode terminal 24 electrically connected to the resistance heating layer 23 to electrically connect to a control circuit of the clothes treatment apparatus, and the resistance heating layer 23 is switched on or off by switching on or off the control circuit, that is, the heating of the resistance heating layer 23 is turned on or off by switching on or off the control circuit. Thick film heating element 20 circular telegram back resistance heating layer 23 sends the heat, and heat conduction to heat-conducting plate 21 for heat-conducting plate 21 temperature risees, heats the water that contacts with heat-conducting plate 21, and in addition, heat-conducting plate 21 that the temperature risees makes heat-conducting plate 21 week side ambient air temperature risees, and indirect water to in the shell 10 heats. The heat conducting plate 21 is an insulating member with high thermal conductivity, and in one embodiment, the heat conducting plate 21 is a stainless steel substrate. The inner insulating dielectric layer 22 protects the thermally conductive plate 21 from being electrically neutral to cause water within the housing 10 to become electrically charged. The outer insulating layer makes the outer side of the resistance heating layer 23 insulated from the outside, and ensures the safety of electricity utilization. Further, the first locking groove 31 of the first sealing ring 30 is used for locking the outer periphery of the heat conducting plate 21.
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 assembly has strong electromagnetic radiation, harms human health, and may cause interference to electronic devices or systems in the laundry care device, 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 the screen printing technique to print interior dielectric layer 22, resistance heating layer 23, outer insulating layer in proper order on heat-conducting plate 21 and form in this embodiment, and the heat-conduction distance from resistance heating layer 23 to heat-conducting plate 21 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 22, a resistance heating layer 23 and an outer insulating layer on a heat conducting plate 21 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 21, 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, as shown in fig. 6 and 7, the thick film heating element 20 is provided with a wiring element 25 for electrical connection with the circuit outside the housing 10. Specifically, the wiring member assembly 25 includes a wiring member 251 and a grounding member 252. The wiring member 251 is electrically connected to the electrode terminal 24 of the thick film heating assembly 20, and the wiring member 251 is located outside the casing 10 so as to electrically connect the electrode terminal 24 to the control circuit in the clothes treating apparatus. The grounding member 252 is used to electrically connect the thick film heating element 20 to the ground, so as to prevent the thick film heating element 20 from leaking electricity during operation. The wiring member 251 and the grounding member 252 are both located outside the housing 10, so as to facilitate the electrical connection between the thick film heating assembly 20 and the circuit outside the housing 10. Further, the thick film heating module 20 is provided with a mounting portion 26 for fixing the wiring module 25. Specifically, the mounting portion 26 is a seed nail. The wiring assembly 25 is a heating end of the thick film heating assembly 20, and is electrically connected to the external circuit of the housing 10 after passing through the notch 41 of the fixing plate 40.
In one embodiment, as shown in fig. 2, the heating assembly body further comprises a temperature-controlled switch for cutting off the power supply of the heating element when the temperature of the heating element exceeds a temperature threshold. The temperature controlled switch is fixed to the fixing plate 40 to facilitate installation. Specifically, in one embodiment, the heating element is a thick film heating assembly 20, and the temperature controlled switch is configured to power off the thick film heating assembly 20 when the temperature of the thick film heating assembly 20 exceeds a temperature threshold. Further, the temperature control switches include an automatic temperature control switch 60 and a manual temperature control switch 70. The automatic temperature control switch 60 and the manual temperature control switch 70 are fixed on the shell 10 and correspond to the position of the thick film heating assembly 20. In one embodiment, the automatic temperature control switch 60 is provided with a flexible bimetallic strip, and when the temperature of the bimetallic strip reaches a certain temperature, the bimetallic strip is bent and deformed 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 160 ℃ automatic temperature control switch; when the temperature of the bimetallic strip reaches 160 ℃, the bimetallic strip bends and deforms to disconnect the power supply. The manual temperature control switch 70 is a manual operation temperature control switch which is turned on and off when the automatic temperature control switch 60 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 70 is not turned on when the temperature of the detected object reaches 190 ℃, 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.
Example 2
The present invention provides a steam generator, as shown in fig. 2, 3 and 9, comprising a generator body 1 arranged in a clothes treatment device, wherein the generator body 1 comprises:
a casing 10 provided with a cavity 11 for containing liquid water and/or steam; the housing 10 is provided with an opening 12;
a heating assembly body for a heating assembly of a steam generator as described above; the heating element is mounted at the opening 12. The fixing plate 40 abuts against the outer surface of the heating element, and the fixing plate 40 can be fixed on the housing 10 by clamping, buckling and fastening. The heating element and the shell 10 are clamped together to form the cavity 11, so that the space occupied by the heating element in the cavity 11 is reduced, the miniaturization design of the generator body 1 is facilitated, and the mounting and dismounting of the heating element are facilitated. Further, the heating element is snapped onto the contour of the opening 12. Further, the opening 12 is provided with a locking protrusion 121 for locking the heating element and facilitating the mounting and dismounting of the heating element. Further, the outer periphery of the heating element is clamped with the clamping protrusion 121 through the first sealing ring 30, so that the sealing performance of the assembling position of the heating element and the opening 12 is improved while the heating element is detached.
In an embodiment, as shown in fig. 2, 3 and 4, the outer contour of the opening 12 extends outward to form a second abutting portion 122, so as to abut against the outer periphery of the heating element, thereby fixing the heating element. Further, the first seal ring 30 provided on the outer peripheral side of the heating element partially abuts against the second abutting portion 122, thereby improving the sealing property and the mounting firmness at the mounting portion of the heating element and the opening 12. Further, the fixing plate 40 abuts against the outer side surface of the second abutting portion 122, and is fixed with the second abutting portion 122 by a fastener.
The opening 12 is vertically provided with a heating element, so that the accumulated objects on the surface of the heating element fall under the self gravity; specifically, the liquid water in the cavity 11 contacts the heating end of the heating element and is heated until steam is formed, the steam is guided out from the air outlet 13 of the casing 10 and is guided into a clothes containing drum of the clothes care device through an air pipeline in the clothes treatment device, so that the clothes are subjected to steam drying, steam decontamination, steam wrinkle removal, steam sterilization and other operations requiring steam treatment. The water level of the liquid water is reduced due to consumption, and the accumulated objects on the surface of the heating element fall under the self gravity; wherein, the accumulated materials on the surface of the heating element comprise accumulated water and formed scale. Along with liquid water becomes steam, the volume of liquid water in cavity 11 reduces gradually, and the water level descends, and liquid water flows downwards along heating element surface, and simultaneously, the remaining water of heating element position surface above the water level can flow downwards gradually under its self gravity until to the water body that is located the cavity 11 bottom of converging, gets rid of fast because of the drop in water on heating element surface that the water level descends and stays, reduces the volume of the liquid water on heating element surface, reduces the volume that the heating element surface formed the incrustation scale to a certain extent. In addition, the scale generated on the surface of the heating element falls under the self gravity, and the scale on the surface of the heating element is removed to a certain degree; in addition, when the shell 10 is supplemented with liquid water, the water enters the cavity 11 from the water inlet 14 of the shell 10, and the surface of the heating element vertically arranged can be washed away in the process that the water flow flows downwards, so that the surface of the heating element is cleaned to a certain degree, the cleanliness of the surface of the heating element is improved, and the influence of pollution on the heating performance of the heating element is reduced;
the bottom of the housing 10 is formed in a flat shape in a longitudinal direction to reduce a cross-sectional area of a bottom space of the cavity 11, thereby increasing a level of liquid water filled in the cavity 11. Specifically, because shell 10 bottom vertically is the platykurtic structure, the width of cavity 11 bottom space is less, injects the condition of the liquid water of the same quantity into cavity 11 in, the water level of cavity 11 bottom space is higher than the water level that the great space of width held equivalent liquid water, and then increases the liquid water in cavity 11 and vertically sets up the area of contact of the heating element in cavity 11, guarantees to have reduced shell 10's local size to the prerequisite of the abundant heating of the liquid water in cavity 11. It should be understood that the upper space of the cavity 11 is sized according to the steam demand of the generator body 1 by the laundry treatment device, i.e. when the steam demand is not large, the casing 10 is flat as a whole, so as to reduce the space occupied by the casing 10 in the laundry treatment device; when the steam demand is large, only the bottom of the shell 10 is in a flat structure longitudinally, so that the requirement of the surface area of the water level in the cavity 11 contacting the heating element is met, and meanwhile, the cavity 11 has enough space for temporarily containing the steam generated by heating.
Further, the opening 12 is provided near the bottom wall of the cavity 11 so that the heating element is mounted near the bottom wall of the cavity 11 to be in sufficient contact with the liquid water.
In one embodiment, the peripheral side wall of the cavity 11 corresponding to the position of the heating element is flared in the airflow direction to facilitate upward movement of the airflow and to accelerate the flow of the steam to the air outlet 13 of the housing 10.
In one embodiment, as shown in fig. 3, the cavity 11 includes a first cavity 111, a second cavity 112; the first cavity 111 is located below the second cavity 112; the heating element is disposed in the first cavity 111; the first cavity 111 has a smaller width than the second cavity 112. Heating element sets up in first cavity 111, and first cavity 111 is located the inside cavity bottom of shell 10, because first cavity 111 width is little for the cross-sectional area of first cavity 111 is little, makes certain water level height guaranteed after liquid water gets into first cavity 111, in order to increase the area of contact of heating element in first cavity 111 and liquid water, and then improves the heating element heating efficiency to the liquid water in the cavity 11.
Further, the width of the first cavity 111 is less than half of the width of the second cavity 112, so as to reasonably arrange the size of the inner space of the cavity 11. The second cavity 112 space may be used to temporarily store the steam inside before being discharged outside the casing 10. The second cavity 112 is sufficient for temporarily storing a desired amount of steam, while also being able to contain a portion of liquid water; the size of the second cavity 112 is determined by the amount of steam required for each course of the laundry treating apparatus. By defining the width of the first cavity 111 to be less than half the width of the second cavity 112, a compact design of the housing 10 is facilitated, and a desired amount of liquid water can be accommodated in the cavity 11, and there is enough space to temporarily store steam generated in the cavity 11, and further, a desired level of liquid water for generating a desired amount of steam in the cavity 11 can be secured to contact the heating element.
In one embodiment, the height of the first cavity 111 is greater than the height of the second cavity 112. The liquid water entering the cavity 11 enters the second cavity 112 after filling the first cavity 111, and since the width of the first cavity 111 is smaller than that of the second cavity 112, the same amount of water level in the first cavity 111 is higher than that in the second cavity 112, so that the height of the first cavity 111 is increased, and the water level of the liquid water contained in the cavity 11 is increased to a certain extent. Further, the first cavity 111 is expanded in the airflow direction, so that the airflow moves upward to accelerate the steam to the air outlet 13 of the casing 10.
In one embodiment, as shown in fig. 4 and 9, the housing 10 is provided with an air outlet 13 and a water inlet 14 disposed at the top of the housing 10. Specifically, the air outlet 13 is arranged at the top of the housing 10, when the steam generated in the cavity 11 rises to the inner wall of the top of the housing 10, the steam can be discharged from the air outlet 13, and the steam can be quickly discharged upwards from the air outlet 13 at the upward movement speed, so that the exhaust is accelerated to a certain extent. If the air outlet 13 is disposed on the side wall of the housing 10, during the steam rising process, part of the steam is discharged after contacting the air outlet 13, and part of the steam still continues to flow upward, so that the exhaust speed of the air outlet 13 is reduced to some extent. When water inlet 14 sets up in shell 10 top, increased the distance between water inlet 14 and thick film heating element 20, liquid water from water inlet 14 injection, the speed that descends is faster and faster, to the impact force on heating element surface when having increased water contact heating element, improves the washing dynamics.
In one embodiment, as shown in fig. 2 and 3, the housing 10 includes a first shell 15, a second shell 16; the first housing 15 and the second housing 16 together clamp the cavity 11. Specifically, the first housing 15 and the second housing 16 are clamped or buckled or fastened together, and the first housing 15 and the second housing 16 are detachably connected to clean the cavity 11.
In one embodiment, as shown in fig. 5, a plurality of first baffles 17 are disposed in the housing 10 to form a first enclosure wall structure partially enclosing the air outlet 13 of the housing 10 with the inner wall of the housing 10;
liquid water is the mixture of gaseous state hydrone and liquid hydrone through the steam that heating element heating formed, if direct export from gas outlet 13, 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 hydrone in the steam, reduce the liquid hydrone that gas outlet 13 was derived. The content of liquid water molecules in the steam led out from the air outlet 13 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, a first baffle 17 is provided inside the first casing 15.
In one embodiment, as shown in FIGS. 4 and 9, the housing 10 is provided with a mounting slot 19 for mounting the level sensor 50. The liquid level sensor 50 extends into the cavity 11 from the mounting groove 19 to acquire the current water level information in the housing 10. Further, the liquid level sensor 50 is directly clamped in the mounting groove 19, so that the liquid level sensor 50 can be conveniently assembled on the shell 10.
Further, as shown in fig. 2 to 5, a second baffle 18 is disposed in the housing 10, and forms a second enclosing wall structure surrounding the outer periphery of the liquid level sensor 50 mounted in the mounting groove 19 with the inner wall of the housing 10, so as to prevent the steam in the cavity 11 from contacting the liquid level sensor 50. The steam temperature is high so as not to affect the service life of the liquid level sensor 50. The second baffle 18 is spaced from the inner wall of the housing 10 at the bottom thereof to allow liquid water to enter for the level sensor 50 to detect the water level. The distance between the bottom of the second baffle 18 and the inner wall of the housing 10 is controlled so that the liquid level sensor 50 is contacted with the liquid water while the influence of the steam on the liquid level sensor 50 is reduced. Further, a second baffle 18 is provided within the first housing 15.
In one embodiment, as shown in fig. 4 and 9, the housing 10 is provided with a mounting platform, the mounting platform is provided with a plurality of mounting holes to form the fixing portion 90, and the mounting platform of the housing 10 is fixed in the clothes treatment device by a fastener, so as to complete the installation of the generator body 1.
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 cavity of the housing 10 reaches a predetermined upper limit to reduce the pressure inside the housing 10. Further, a pressure relief valve is arranged at the pressure relief opening, when the pressure in the cavity of the shell 10 exceeds a pressure threshold set by the pressure relief valve, the pressure relief is automatically opened, and the pressure in the cavity of the shell 10 is ensured to be below the pressure threshold; when the pressure in the cavity of 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, the heating element is vertically arranged, and the flowing water flow speed is high because the accumulated water flows downwards quickly when the water level is lowered, and the cleaning effect of the flowing water on the surface of the heating element is weak.
In one embodiment, the heating element is arranged obliquely, diverging outwardly in the direction of flow of the steam. When the water level of the liquid water is reduced, the water flow flows along the heating element until the water flows into the water body, the downward flowing speed of the accumulated water is slightly lower than that of the accumulated water when the heating element is vertically arranged, and the surface of the heating element is cleaned to a certain degree. In addition, the heating element expands outwards along the flowing direction of the steam to accelerate the upward flowing speed of the steam formed by heating the liquid water.
In one embodiment, a first sealing ring 30 is arranged on the outer periphery of the heating element, and the outer periphery of the first sealing ring 30 abuts against the contour of the outer periphery of the opening 12 formed in the shell 10, so as to improve the sealing performance of the assembling position of the heating element and the opening 12. Further, the first sealing ring 30 is provided with a second locking groove 32 to be locked with the locking protrusion 121 provided on the opening 12.
In one embodiment, as shown in fig. 2 and 3, the heating element is a thick film heating assembly 20, and the heating end surface area of the thick film heating assembly 20 is large and the heating is fast. As shown in fig. 2 and 3, a first seal ring 30 is provided on the peripheral side of the thick film heating unit 20, and the outer peripheral side of the first seal ring 30 abuts against the contour of the peripheral side of the opening 12. The sealing performance between the peripheral side of the thick film heating assembly 20 and the inner wall of the housing 10 is increased, and liquid water or generated steam in the cavity 11 is prevented from leaking from the installation position of the thick film heating assembly 20. In addition, the first sealing ring 30 has certain flexibility, and in the process that the generator body 1 moves during transportation, installation and the like, the first sealing ring 30 provides certain buffering and anti-seismic performance for protecting the thick film heating assembly 20, so that the thick film heating assembly 20 is protected from being damaged.
In one embodiment, as shown in fig. 2, 3 and 8, the peripheral side of the thick film heating assembly 20 is engaged with the first sealing ring 30 to facilitate the assembly of the thick film heating assembly 20 and the first sealing ring 30. Specifically, the inner side of the first sealing ring 30 is provided with a first clamping groove 31, and the peripheral side of the thick film heating assembly 20 is clamped into the first clamping groove 31, so that the assembly of the thick film heating assembly 20 and the first sealing ring 30 is completed.
In one embodiment, as shown in fig. 2, 3 and 8, the first sealing ring 30 provided around the thick film heating assembly 20 is engaged with the contour of the opening 12 of the housing 10. The thick film heating assembly 20 is installed in the opening 12 of the shell 10 through the first sealing ring 30, the installation is convenient, and the thick film heating assembly 20 is not easy to damage due to the protection of the first sealing ring 30 during installation. Specifically, a second engaging groove 32 is formed on the outer peripheral side of the first sealing ring 30 to engage with an engaging protrusion 121 formed on the opening 12.
Further, a fixing plate 40 for fixing the temperature controlled switch of the generator body 1 covers the outer surface of the thick film heating element 20. Thick film heating element 20 is including the heat-conducting plate 21, the internal insulation dielectric layer 22, the resistance heating layer 23, the outer insulating layer that set gradually, and heat-conducting plate 21 is towards cavity 11, and then the outer insulating layer is outside towards shell 10, and in order to protect thick film heating element 20 simultaneously, avoid because of the outer insulating layer appears damaging the potential safety hazard that leads to the electric leakage when exposing, cover thick film heating element 20 surface through fixed plate 40. Further, since the thick film heating element 20 is further provided with the wiring element 25, in order to facilitate the electrical connection between the wiring element 25 and the circuit outside the housing 10, the fixing plate 40 is provided with the notch 41, so that the wiring member 251 and the grounding member 252 of the wiring element 25 extend out of the housing 10.
In one embodiment, as shown in fig. 2 and 3, the generator body 1 is provided with a liquid level sensor 50 to obtain information on the current water level in the housing 10. Further, the liquid level sensor 50 is installed in the installation groove 19 of the housing 10. Specifically, the liquid level sensor 50 is a high-low level liquid level sensor, and its detection end extends into the cavity 11 from the mounting groove 19 to detect the water level condition in the housing 10. Further, the liquid level sensor 50 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 50, and remind the user to adjust the water level in the generator body 1. In one embodiment, the liquid level sensor 50 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 disposed at the assembly position of the three-pin water level switch and the housing 10 for sealing, so as to improve the sealing property inside the housing 10.
Example 3
The invention provides a washing machine, which comprises a box body, wherein a generator body 1 of a steam generator 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 13 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, meanwhile, a heating element is started to heat, the water is heated by contacting with the heating element to form steam, and the steam is provided for the inner drum of the washing machine, so that the decontamination function, the drying function, the wrinkle removal function or the sterilization function is realized. The liquid water is consumed as steam is formed, the water level of the liquid water is reduced, the liquid water falls along the surface of the heating element, and meanwhile, the water accumulated on the surface of the heating element moves downwards along the surface of the heating element until the water merges into the water body, so that the water accumulated on the surface of the heating element is reduced, and the generation of scale on the surface of the heating element is reduced to a certain extent.
Compared with the prior art, the heating assembly for the steam generator provided by the invention has the advantages that the heating element can be stably and quickly arranged at the opening of the shell of the generator body, so that the heating element and the shell are clamped together to form the cavity, and the miniaturization design of the whole size of the generator body is facilitated.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (17)
1. A heating element for a steam generator comprising a heating element body arranged on a housing (10) of a generator body (1), characterized in that the heating element body comprises:
a heating element in a plate-like structure for heating the liquid water in the housing (10) to obtain steam; the heating element is fixed at an opening (12) arranged on a shell (10) of the generator body (1);
and the fixing plate (40) is fixed on the outer side of the shell (10) and abuts against the outer surface of the heating element to form a mounting structure of the heating element on the surface of the shell (10).
2. A heating element for a steam generator according to claim 1, characterized in that the heating element body is arranged on one side of the housing (10).
3. A heating assembly for a steam generator according to claim 1, characterized in that the fixing plate (40) comprises a first abutment (42) connected to a plate body (43); the first abutment (42) is used to form a pressing force of the heating element outer surface.
4. A heating assembly for a steam generator according to claim 3, characterized in that the number of said first abutments (42) is at least two.
5. A heating element for a steam generator according to claim 1, wherein the heating element body further comprises a first sealing ring (30) provided at an outer circumferential side of the heating element; the outer periphery of the first sealing ring (30) abuts against the inner contour of the opening (12) so as to seal the assembling position of the heating element and the opening (12).
6. A heating element for a steam generator according to claim 5, wherein the fixing plate (40) has two first abutting portions (42) which are oppositely located and abut against the two opposite inner side walls of the first sealing ring (30), respectively.
7. A heating element for a steam generator according to claim 1, characterized in that the fixing plate (40) is provided with a notch (41) for the terminal of the heating element to pass through for electrical connection with the circuit outside the housing (10).
8. A heating assembly for a steam generator according to claim 7, wherein the fixing plate (40) covers the outer surface of the heating element.
9. A heating element for a steam generator according to claim 1, characterized in that the heating element is a thick film heating element (20).
10. A steam generator comprising a generator body (1) provided in a laundry treatment device, characterized in that said generator body (1) comprises:
a casing (10) provided with a cavity (11) for containing liquid water and/or steam; the shell (10) is provided with an opening (12);
a heating element body of a heating element for a steam generator according to any one of claims 1 to 9; the heating element is mounted at the opening (12).
11. The steam generator as claimed in claim 10, characterized in that the bottom of the housing (10) is longitudinally flattened to reduce the cross-sectional area of the bottom space of the cavity (11).
12. A steam generator according to claim 11, characterized in that the peripheral side wall of the cavity (11) corresponding to the location of the heating element is flared in the direction of flow of the gas stream.
13. A steam generator according to claim 10, characterized in that the housing (10) is provided with an air outlet (13), a water inlet (14); the air outlet (13) and the water inlet (14) are positioned at the top of the shell (10).
14. A steam generator according to claim 11, characterized in that a plurality of first baffles (17) are provided in the housing (10) to form with the inner wall of the housing (10) a first enclosure wall structure partially enclosing the air outlet (13) of the housing (10);
steam in the cavity (11) contacts the first enclosure wall structure, after heat of the steam is conducted through the first enclosure wall structure, liquid water molecules are condensed on the surface of the first enclosure wall structure, so that the liquid water molecules in the steam are separated from the gaseous water molecules, and the liquid water molecules led out from the air outlet (13) are reduced.
15. The steam generator according to claim 10, characterized in that the housing (10) is provided with mounting slots (19) for mounting a level sensor (50).
16. The steam generator of claim 15, wherein a second baffle (18) is disposed in the housing (10) and forms a second enclosure wall structure with the inner wall of the housing (10) surrounding the outer periphery of the level sensor (50) mounted in the mounting groove (19) to block steam in the cavity (11) from contacting the level sensor (50).
17. A washing machine comprising a cabinet, characterized in that a generator body (1) of a steam generator according to any one of claims 10 to 16 is provided in said 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 (13) 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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| Application Number | Priority Date | Filing Date | Title |
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| CN202010964094.XA CN114182495A (en) | 2020-09-15 | 2020-09-15 | Heating assembly for steam generator, steam generator and washing machine |
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| CN202010964094.XA CN114182495A (en) | 2020-09-15 | 2020-09-15 | Heating assembly for steam generator, steam generator and washing machine |
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| CN114182495A true CN114182495A (en) | 2022-03-15 |
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| CN202010964094.XA Pending CN114182495A (en) | 2020-09-15 | 2020-09-15 | Heating assembly for steam generator, steam generator and washing machine |
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