CN217952245U - Heating assembly, steam generator and surface cleaning equipment - Google Patents

Abstract

The present disclosure provides a heating assembly, comprising: a heating device having an accommodating space formed therein, the accommodating space having an inlet and an outlet; and a helical descaling member, at least part of which is located in the accommodating space; the spiral descaling part can be driven to rotate relative to the heating device; at least one sunken part is formed on the peripheral surface of the spiral descaling part, a grinding part is arranged in at least one sunken part, and when the spiral descaling part rotates, the grinding part is in frictional contact with the inner wall of the heating device. The present disclosure also provides a steam generator and a surface cleaning apparatus.

Description

Heating assembly, steam generator and surface cleaning equipment

Technical Field

The present disclosure relates to a heating assembly, a steam generator and a surface cleaning apparatus.

Background

As the living standard of people is continuously improved, the requirement on household cleaning equipment is higher and higher. The functions and performances of household cleaning devices are also continuously improved step by step according to market demands, for example, the functions and performances of the household cleaning devices are developed from simple dust collectors which can only absorb dust to steam floor washers which integrate suction and dragging.

As a particularly popular steam scrubber in recent years, the design of the steam boiler, a core component, has a critical impact on the cleaning performance of the steam scrubber.

Aiming at the limitation of battery capacity, on the premise of meeting the endurance time of one-time use of a user, the power of a steam boiler is strictly limited, so that the power of the steam boiler cannot be very high, and the utilization rate of heat of the steam boiler directly influences the quantity of generated steam under the condition.

The main factors affecting the heat utilization degree of the steam boiler include the design of the heating pipes inside the boiler and/or the treatment of scale. The design of the pipeline of the boiler on the market at present is mainly circular, and because the flow of a pump of the direct-current steam floor washing machine is not very large, water can only contact with the upper half part of the boiler when entering the boiler, and heat cannot be fully utilized. Because of the existence of metal ions such as calcium, magnesium and the like in water, water can form scale and be adsorbed on the inner wall of a boiler heating pipe during heating, so that heat transfer is hindered, and even the heating pipe can be blocked in serious cases.

For the treatment of scale, some descaling agents are mainly added into water in the steam floor washing machines on the market at present, and although the descaling agents have certain effects, the scale cannot be completely removed. When the boiler is used for a long time, scale can be generated on the inner wall of the heating pipe of the boiler.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present disclosure provides a heating assembly, a steam generator and a surface cleaning apparatus.

According to one aspect of the present disclosure, there is provided a heating assembly, comprising:

a heating device having an accommodating space formed therein, the accommodating space having an inlet and an outlet; and

a helical descaling element, at least part of which is located in the accommodating space; the spiral descaling part can be driven to rotate relative to the heating device; at least one sunken part is formed on the peripheral surface of the spiral descaling part, a grinding part is arranged in at least one of the sunken parts, and when the spiral descaling part rotates, the grinding part can be in frictional contact with the inner wall of the heating device.

According to the heating assembly of at least one embodiment of the present disclosure, the accommodating space is formed in a tubular shape, and a rotation axis of the spiral scale removing member coincides with a central axis of the accommodating space.

According to the heating assembly of at least one embodiment of the present disclosure, at least a portion of an outer circumferential surface of the spiral scale removing member has spiral blades, and the recess is formed by a space between the spiral blades.

According to the heating assembly of at least one embodiment of the present disclosure, the spiral blade is spirally arranged along the outer circumferential surface of the spiral scale removing member.

According to the heating assembly of at least one embodiment of the present disclosure, at least a portion of the spiral blade is in contact with an inner wall surface of the heating device.

According to another aspect of the present disclosure, there is provided a steam generator including the above-described heating assembly.

A steam generator according to at least one embodiment of the present disclosure further includes:

a liquid supply portion for supplying liquid to an inner wall surface of the accommodating space of the heating device.

According to the steam generator of at least one embodiment of the present disclosure, the liquid supply part and the spiral scale removing member are integrated.

According to the steam generator of at least one embodiment of the present disclosure, a liquid circulation channel is formed inside the spiral descaling part, one end of the liquid circulation channel is used for receiving cleaning liquid, and the other end of the liquid circulation channel is closed; spiral descaling piece is located the outer peripheral face of the part in the accommodation space sets up a plurality of shower nozzles of intaking, and is a plurality of the shower nozzle of intaking is followed the extending direction interval arrangement of liquid circulation passageway, and each the shower nozzle of intaking all communicates with liquid circulation passageway, wherein, the shower nozzle of intaking is used for with liquid injection to the inner wall of accommodation space in the liquid circulation passageway.

According to at least one embodiment of this disclosure, the water inlet nozzle is the atomizer, and the atomizer is used for providing the inner wall to accommodation space after liquid in the liquid circulation passageway atomizes.

According to the steam generator of at least one embodiment of the present disclosure, the plurality of water inflow nozzles are uniformly spaced along the extending direction of the liquid flow passage.

According to at least one embodiment of the present disclosure, the water inlet nozzle includes a plurality of branch nozzles spaced along a circumferential direction of the liquid flow passage, and each of the branch nozzles is connected to the liquid flow passage.

According to at least one embodiment of the present disclosure, the water spray head is located in the recess.

According to the steam generator of at least one embodiment of the present disclosure, the water inlet nozzle is not provided at and near the outlet of the heating device.

According to the steam generator of at least one embodiment of the present disclosure, the liquid is heated to generate steam and then discharged from the outlet of the heating device.

According to the steam generator of at least one embodiment of the present disclosure, the heating device is connected to an outlet portion, wherein the outlet portion has a gas circulation passage inside, and an outlet of the heating device is communicated with the gas circulation passage.

According to the steam generator of at least one embodiment of the present disclosure, the gas circulation passage has a first portion and a second portion connected to the first portion, wherein the first portion communicates with the outlet of the heating device, and central axes of the first portion and the second portion are not on the same line.

According to the steam generator of at least one embodiment of the present disclosure, a first sealing member is disposed between the heating device and the outlet part.

According to at least one embodiment of the present disclosure, a water absorbing member is provided in the gas flow passage.

A steam generator according to at least one embodiment of the present disclosure further includes:

an inlet part formed with a through hole, one end of the spiral scale removing member passing through the inlet part and located outside the inlet part, thereby providing liquid to the inside of the spiral scale removing member through the one end of the spiral scale removing member.

According to at least one embodiment of the present disclosure, a second sealing member is disposed between the inlet part and the spiral scale removing member.

According to at least one embodiment of the present disclosure, a third sealing member is disposed between the heating device and the inlet part.

A steam generator according to at least one embodiment of the present disclosure further includes:

and the liquid supply pipe is used for supplying liquid, and a water seal bearing is arranged between the liquid supply pipe and the spiral descaling part.

The steam generator according to at least one embodiment of the present disclosure further includes an upper case and a lower case, wherein the upper case and the lower case are fixed to an inlet portion and an outlet portion, and an accommodating space is formed between the upper case and the lower case, and the heating device is located in the accommodating space.

A steam generator according to at least one embodiment of the present disclosure further includes: and the temperature controller is used for controlling the power of the heating device.

According to another aspect of the present disclosure, there is provided a surface cleaning apparatus comprising the above-described heating assembly, or the above-described steam generator.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a steam generator according to an embodiment of the present disclosure.

Fig. 2 is a sectional view of fig. 1.

FIG. 3 is a schematic structural view of a spiral descaling element according to an embodiment of the present disclosure.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

The reference numbers in the figures are in particular:

100. steam generator

110. Heating device

120. Spiral descaling part

121. Liquid flow channel

122. Water inlet spray head

123. Helical blade

124. Concave part

130. Inlet section

140. Drive device

150. Grinding member

160. Outlet section

161. Gas flow channel

161A first part

161B second part

162. Water absorbing component

170. First seal member

180. Liquid supply tube

190. Second seal member

200. Third seal member

210. Upper shell

220. Lower casing

230. And (7) a temperature controller.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant matter and not restrictive of the disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality among the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically connected, electrically connected, and the like, with or without intervening components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" upper, "and" side (e.g., as in "sidewall") to describe the relationship of one component to another (other) component as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Moreover, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

Fig. 1 is a schematic structural view of a steam generator according to an embodiment of the present disclosure. Fig. 2 is a sectional view of fig. 1. FIG. 3 is a schematic structural view of a spiral descaling element according to an embodiment of the present disclosure. Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

According to an aspect of the present disclosure, as shown in fig. 1 to 4, a heating device 110 and a spiral scale removing member 120 together constitute a heating assembly, wherein an accommodating space having an inlet and an outlet is formed inside the heating device 110; at least a portion of the spiral descaling element 120 is located in the accommodating space; the spiral descaling part 120 can be driven to rotate relative to the heating device 110; at least one recess 124 is formed on the outer circumferential surface of the spiral scale removing element 120, and a grinding member 150 is disposed in at least one of the recesses 124, such that when the spiral scale removing element 120 rotates, the grinding member 150 can be in frictional contact with the inner wall of the heating device 110.

As shown in fig. 4, in a specific embodiment, the grinding member 150 may be a grinding stone, and the frictional contact is achieved by a frictional force between the grinding stone and the heating device 110, so that the scale generated on the inner wall surface of the heating device 110 is ground into powder and removed, and is discharged with the steam, thereby improving the thermal efficiency of the heating device 110; on the other hand, the grinding member 150 can remove scale on the surface of the recess 124, so that the friction force of the recess 124 is smaller when steam is delivered.

In the present disclosure, as shown in fig. 4, the receiving space may be formed in a tubular shape, and a rotation axis of the helical scale 120 coincides with a central axis of the receiving space.

In a preferred embodiment, as shown in fig. 4, at least a part of the outer circumferential surface of the spiral scale removing member 120 has spiral blades 123, the spiral blades 123 are located in the receiving space, and the recess 124 is formed by the space between the spiral blades 123; that is, at this time, the recess 124 is formed in one, that is, in a continuous spiral shape, so that the generated hot water or steam can be delivered to the outlet of the heating device 110 through the recess 124.

Specifically, as shown in fig. 4, the helical blades 123 are spirally arranged along the outer circumferential surface of the helical descaling part 120, and the space between adjacent helical blades 123 forms the above-mentioned recessed part 124; more preferably, at least a portion of the spiral blade 123 is in contact with an inner wall surface of the heating device 110, for example, an outer edge end surface of the spiral blade 123 may be in contact with or in close contact with the inner wall surface of the heating device 110, when the spiral blade 123 rotates, scale on the inner wall surface of the heating device 110 is removed by friction with the outer edge end surface of the spiral blade 123, accordingly, an opening of the recess 124 may be closed by the inner wall surface of the heating device 110, so that steam can be transmitted only through the recess 124.

According to another aspect of the present disclosure, a steam generator 100 is provided, and the steam generator 100 may include the aforementioned heating assembly.

The structure of the steam generator 100 will be described below with reference to fig. 1 to 4.

Fig. 1 is a schematic structural view of a steam generator according to an embodiment of the present disclosure. Fig. 2 is a sectional view of fig. 1.

As shown in fig. 1 and 2, the steam generator 100 of the present disclosure can be installed in a surface cleaning apparatus, and receive a liquid supplied from a liquid storage part of the surface cleaning apparatus, generate the liquid into steam, and output the steam to the outside.

Preferably, in order to reduce the energy consumed by the steam generator 100, the inside of the liquid storage part may store hot water, for example, hot water having a temperature of about 80 ℃. So that steam can be easily generated when the hot water is inputted to the steam generator 100 and energy consumed by the steam generator 100 is made less. At this time, the liquid storage part should be made of a high temperature resistant material to prevent damage of the liquid storage part.

When the surface cleaning apparatus is in an operating state, the surface to be cleaned can be steam-cleaned by the steam supplied from the steam generator 100, thereby improving the cleaning effect of the surface to be cleaned.

The heating device 110 is used to provide heat and thereby heat the liquid to a vapor. In one embodiment, the heating device 110 is internally formed with a receiving space having an inlet through which at least a portion of the spiral scale 120 can be inserted into the interior of the heating device 110 and an outlet, thereby enabling at least a portion of the spiral scale 120 to be located inside the heating device 110.

FIG. 3 is a schematic structural view of a spiral descaling element according to an embodiment of the present disclosure. Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

In the present disclosure, the steam generator further includes a liquid supply part for supplying liquid to an inner wall surface of the accommodating space of the heating device 110, thereby heating the liquid by the heating device, so that the liquid is vaporized to generate steam.

In one embodiment, the liquid supply portion is formed as a separate component; in another embodiment, preferably, the liquid supply is integrated with the spiral descaling element; that is, both the descaling function and the liquid supply function can be realized by the integrated component.

The following is a detailed description of the integrated solution, and the solution of separately providing the liquid supply and the spiral descaling member will not be described in detail.

As shown in fig. 3 and 4, in an integrated solution, at least a portion of the spiral scale remover 120 is located in the accommodating space of the heating device 110, so that the heating device 110 is supplied with liquid through the spiral scale remover 120. In one embodiment, the spiral descaling part 120 is internally formed with a liquid flow channel 121 along the axial direction thereof, wherein one end of the liquid flow channel 121 is used for receiving cleaning liquid, and the other end of the liquid flow channel 121 is closed; preferably, one end (open end) of the liquid flow channel 121 is disposed near the inlet of the heating device, and the other end (closed end) of the liquid flow channel 121 is disposed near the outlet of the heating device 110.

In this disclosure, as shown in fig. 4, the spiral descaling part 120 is located on the outer peripheral surface of the part of the accommodating space, and a plurality of water inlet nozzles 122 are disposed on the outer peripheral surface of the part of the accommodating space, wherein the plurality of water inlet nozzles 122 are arranged at intervals along the extending direction of the liquid flowing channel 121, and each of the water inlet nozzles 122 is communicated with the liquid flowing channel 121, and the water inlet nozzles 122 are used for injecting the liquid in the liquid flowing channel 121 to the inner wall of the accommodating space.

In a preferred embodiment, the water inlet nozzle 122 is an atomizing nozzle for atomizing the liquid in the liquid flowing channel 121 and providing the atomized liquid to the inner wall of the accommodating space, so that the atomized liquid can be heated by the heating device 110 more quickly and is in a steam state.

More preferably, a plurality of the water inlet spray heads 122 are arranged at regular intervals along the extending direction of the liquid flowing channel.

In the present disclosure, as shown in fig. 4, the water inlet nozzle 122 includes a plurality of branch nozzles arranged at intervals in a circumferential direction of the liquid flow channel 121, and each of the branch nozzles is connected to the liquid flow channel 121, so that the liquid can be atomized and dispersed more uniformly by the arrangement of the branch nozzles.

Referring to fig. 4 again, more specifically, the outer circumferential surface of the spiral descaling element 120 is formed with at least one recess 124, at least one of the recesses 124 is communicated with the liquid flow channel 121 through the water inlet nozzle 122, so that the liquid in the liquid flow channel 121 is passed through the recess by the water inlet nozzle 122 and supplied to the inner wall surface of the heating device 110, in other words, the opening of the recess 124 faces the inner wall surface of the heating device 110, so that the liquid can be in contact with the inner wall surface of the heating device 110, and thus the heating device 110 can heat the liquid in the recess 124.

In a preferred embodiment, as shown in fig. 4, the water inlet nozzle 122 is used for atomizing the liquid in the liquid flowing channel 121 and providing the atomized liquid to the concave portion 124, so that the liquid can be in sufficient contact with the inner wall surface of the heating device 110, thereby improving the thermal efficiency of the heating device 110; as one implementation, the water inlet nozzle 122 may be formed by a through hole having a diameter configured to atomize the liquid, that is, the diameter of the through hole is relatively small.

In one embodiment, the steam generator 100 may further include: an inlet part 130, the inlet part 130 being formed with a through hole, one end of the spiral scale removing member 120 passing through the inlet part 130 to be positioned outside the inlet part 130, thereby supplying liquid to the inside of the spiral scale removing member 120 through the one end of the spiral scale removing member 120.

Accordingly, as shown in fig. 4, the spiral scale remover 120 located outside the inlet part 130 may be provided with a driven gear, and the driving means 140 may be provided with a driving gear so that the driving means 140 can drive the spiral scale remover 120 to rotate by the engagement of the driving gear and the driven gear. In the present disclosure, the driving device 140 may be selected as a motor, and the gear transmission structure formed by the driving gear and the driven gear may be replaced by other transmission structures, such as a pulley transmission structure or a sprocket transmission structure.

In the present disclosure, as shown in fig. 4, the water inlet nozzle 132 is not disposed at and near the outlet of the heating device 110, so that the liquid sprayed by the water inlet nozzle 122 can have a time sufficient for heating to convert into steam, and the atomized liquid can be prevented from being directly discharged without effectively forming steam, thereby improving the use effect of the steam generator 100. Here, the vicinity may be understood as a certain distance from the outlet end of the heating device 110, for example, about one-thirtieth of the total length of the heating device 110, and not more than one-tenth of the total length of the heating device 110.

In the present disclosure, as shown in fig. 4, the liquid is heated to generate steam and then discharged from an outlet of the heating device 110.

Accordingly, as shown in fig. 1 and 2, the steam generator 100 may further include an outlet 160, the heating device 110 is connected to the outlet 160, wherein the outlet 160 has a gas flow passage 161 therein, and an outlet of the heating device 110 is communicated with the gas flow passage 161, so that, in use, the outlet 160 serves as a steam outlet of the steam generator 100.

As shown in fig. 2, the gas flow channel 161 has a first portion 161A and a second portion 161B connected to the first portion 161A, wherein the first portion 161A is communicated with the outlet of the heating device 110, and the central axes of the first portion 161A and the second portion 161B are not on the same straight line; more preferably, the central axes of the first and second portions 161A and 161B are perpendicular or substantially perpendicular to each other, so that when the steam generator is in use, the spiral descaling part 120 thereof is horizontally disposed, and accordingly, the first portion 161A is also horizontally disposed, and at this time, the second portion 161B may be vertically disposed upward, and at this time, the liquid discharged through the gas flow passage 161 can be reduced.

More preferably, as shown in fig. 2, a water absorbing member 162 is disposed in the air flow channel 161, so that the liquid absorbed by the water absorbing member 162 is reduced, i.e. the hot water that has not been processed into steam is prevented from being ejected with the steam; in a preferred embodiment, the water absorbing member 162 is disposed at the junction of the first portion 161A and the second portion 161B, such as at the end of the first portion 161A adjacent to the second portion 161B. More preferably, the water absorbing member 162 may be a high temperature resistant sponge, so that the water absorbing member 162 can be prevented from being easily damaged.

A first sealing member 170 is disposed between the heating device 110 and the outlet 160, and the first sealing member 170 enables the steam discharged through the heating device 110 to be discharged only through the outlet 160.

In one embodiment, the other end of the spiral descaling element 120 (i.e. the end near the outlet of the heating device 110) can be rotatably supported on the first portion 161A by a bearing, so that the rotation of the spiral descaling element 120 can be more stable.

In the present disclosure, the steam generator 100 further includes: a liquid supply pipe 180 for supplying liquid, wherein a water seal bearing is provided between the liquid supply pipe 180 and the spiral scale removing member 120, so that when the spiral scale removing member 120 rotates, the liquid supply pipe 180 does not rotate, and a leakage of liquid does not occur at a position between the liquid supply pipe 180 and the spiral scale removing member 120.

The inlet portion 130 of the present disclosure and the helical scale 120 are provided with a second sealing member 190 therebetween, and gas is prevented from flowing out of the inlet of the heating apparatus 110 by the second sealing member 190 and discharged to the outside through a gap between the inlet portion 130 and the helical scale 120.

More preferably, a third sealing member 200 is disposed between the heating device 110 and the inlet 130, and the third sealing member 200 prevents the gas from flowing out from the inlet of the heating device 110 and then being discharged to the outside through a gap between the heating device 110 and the inlet 130.

In one embodiment, the steam generator 100 further includes an upper housing 210 and a lower housing 220, wherein the upper housing 210 and the lower housing 220 are fixed to the inlet portion 130 and the outlet portion 160, and a receiving space is formed between the upper housing 210 and the lower housing 220, and the heating device 110 is located in the receiving space.

In the present disclosure, the outer wall surface of the heating device 110 may be provided with a heat insulating layer, thereby preventing heat generated by the heating device 110 from being conducted to the upper and lower cases 210 and 220; more preferably, a gap is formed between the circumferential surface of the heating device 110 and the inner wall surfaces of the upper and lower cases 210 and 220, so that the amount of heat conducted from the heating device 110 to the upper and lower cases 210 and 220 is reduced.

In one embodiment, the steam generator 100 further includes: a thermostat 230, wherein the thermostat 230 is used for controlling the power of the heating device 110; in the present disclosure, the power of the heating device 110 may be adjusted according to the amount of generated steam, for example, when the amount of required steam is relatively large, the power of the heating device 110 may be increased accordingly; conversely, when a relatively small amount of steam is required, the power of the heating device 110 may be reduced accordingly.

In the present disclosure, the water mist supplied by the spiral descaling part 120 can be directly applied to the inner wall of the heating device 110, so that the heat generated by the heating device 110 can be fully utilized to heat more water into steam, thereby improving the cleaning effect of the surface cleaning apparatus.

In particular, in the present disclosure, by removing the scales from the heating device 110 and the spiral scale remover 120, atomizing water and spraying the atomized water onto the inner wall of the heating device 110, and preventing hot water that has not been processed into steam from being sprayed along with the steam, the heat generated by the heating device 110 can be fully utilized, so that the direct-flow steam surface cleaning device forms more steam, and the cleaning effect is improved.

According to another aspect of the present disclosure, a surface cleaning apparatus is provided, which includes the steam generator 100 described above.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (26)

1. A heating assembly, comprising:

a heating device having an accommodating space formed therein, the accommodating space having an inlet and an outlet; and

a helical descaling element, at least part of which is located in the accommodating space; the spiral descaling part can be driven to rotate relative to the heating device; at least one sunken part is formed on the peripheral surface of the spiral descaling part, a grinding part is arranged in at least one of the sunken parts, and when the spiral descaling part rotates, the grinding part can be in frictional contact with the inner wall of the heating device.

2. The heating assembly of claim 1, wherein the receiving space is formed in a tubular shape, and an axis of rotation of the spiral descaling element coincides with a central axis of the receiving space.

3. The heating assembly of claim 1, wherein at least a portion of an outer circumferential surface of the spiral scale removing member has spiral blades, and the recess is formed by a space between the spiral blades.

4. The heating assembly of claim 3, wherein the helical blade is helically disposed along an outer peripheral surface of the helical descaling element.

5. The heating assembly of claim 3, wherein at least a portion of the helical blade is in contact with an inner wall surface of the heating device.

6. A steam generator comprising a heating assembly according to any of claims 1 to 5.

7. The steam generator of claim 6, further comprising:

a liquid supply portion for supplying liquid to an inner wall surface of the accommodation space of the heating device.

8. The steam generator of claim 7, wherein the liquid supply and the spiral descaling element are integrated.

9. The steam generator of claim 8, wherein the spiral descaling member is internally formed with a liquid flow channel, one end of which is used for receiving the cleaning liquid, and the other end of which is closed; spiral descaling piece is located the outer peripheral face of the part in the accommodation space sets up a plurality of shower nozzles of intaking, and is a plurality of the shower nozzle of intaking is followed the extending direction interval arrangement of liquid circulation passageway, and each the shower nozzle of intaking all communicates with liquid circulation passageway, wherein, the shower nozzle of intaking is used for with liquid injection to the inner wall of accommodation space in the liquid circulation passageway.

10. The steam generator of claim 9, wherein the water inlet nozzle is an atomizer nozzle, and the atomizer nozzle is configured to atomize the liquid in the liquid flow channel and provide the atomized liquid to the inner wall of the accommodating space.

11. The steam generator of claim 9, wherein a plurality of the water inlet spray heads are uniformly spaced along an extending direction of the liquid flow passage.

12. The steam generator of claim 9, wherein the water inlet nozzle includes a plurality of branch nozzles spaced along a circumference of the liquid flow path, each of the branch nozzles being connected to the liquid flow path.

13. The steam generator of claim 12, wherein the water inlet spray head is located in the recess.

14. The steam generator of claim 9, wherein no water inlet jets are provided at and near the outlet of the heating device.

15. The steam generator of claim 9, wherein the liquid is discharged from an outlet of the heating device after being heated to generate steam.

16. The steam generator of claim 15, wherein the heating device is connected to an outlet section, wherein the outlet section has a gas flow passage therein, and wherein an outlet of the heating device is in communication with the gas flow passage.

17. The steam generator of claim 16, wherein the gas flow channel has a first portion and a second portion connected to the first portion, wherein the first portion communicates with the outlet of the heating device, and wherein the central axes of the first and second portions are not collinear.

18. The steam generator of claim 16, wherein a first sealing member is disposed between the heating device and the outlet section.

19. The steam generator of claim 16, wherein a water absorbent member is disposed within the gas flow channel.

20. The steam generator of claim 9, further comprising:

an inlet part formed with a through hole, one end of the spiral scale removing member passing through the inlet part and located outside the inlet part, thereby providing liquid to the inside of the spiral scale removing member through the one end of the spiral scale removing member.

21. The steam generator of claim 20, wherein a second sealing member is disposed between the inlet portion and the spiral descaling member.

22. The steam generator of claim 20, wherein a third sealing member is disposed between the heating device and the inlet portion.

23. The steam generator of claim 9, further comprising:

the liquid supply pipe is used for providing liquid, wherein a water seal bearing is arranged between the liquid supply pipe and the spiral descaling part.

24. The steam generator of claim 9, further comprising an upper housing and a lower housing, wherein the upper housing and the lower housing are fixed to the inlet portion and the outlet portion such that an accommodating space is formed therebetween, and the heating device is located in the accommodating space.

25. The steam generator of claim 9, further comprising: and the temperature controller is used for controlling the power of the heating device.

26. A surface cleaning apparatus comprising a heating assembly as claimed in any one of claims 1 to 5 or a steam generator as claimed in any one of claims 6 to 25.

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