CN217013888U

CN217013888U - Wireless surface cleaning apparatus and cleaning system

Info

Publication number: CN217013888U
Application number: CN202220215834.4U
Authority: CN
Inventors: 曹力; 唐成; 段飞
Original assignee: Beijing Shunzao Technology Co Ltd
Current assignee: Beijing Shunzao Technology Co Ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-07-22
Anticipated expiration: 2032-01-26

Abstract

The present disclosure provides a wireless surface cleaning apparatus comprising: a base; a main body coupled to the base; a first liquid reservoir; a vapor distributor; a liquid dispenser; a first fluid passage; a second liquid reservoir; vacuumizing a suction port; a second fluid passageway; a source of suction; a thick film heater located in the first fluid path, the thick film heater being adapted to heat at least a portion of the cleaning liquid in the heating chamber above the boiling point of the cleaning liquid to form a heated cleaning liquid vapour; a rechargeable battery; a first control element for controlling at least the thick film heater such that the thick film heater can selectively deliver heated cleaning liquid vapor to a surface of the cleaning portion and/or a surface to be cleaned; the first control element is configured to be associated with the rechargeable battery to selectively regulate and control the vapor flow output by the thick film heater according to a voltage change of the rechargeable battery. The present disclosure also provides a cleaning system.

Description

Wireless surface cleaning apparatus and cleaning system

Technical Field

The present disclosure relates to cleaning device technology, and more particularly, to a wireless surface cleaning device and cleaning system.

Background

One development route in the surface cleaning equipment industry, such as floor washers, is the use of steam as a cleaning agent.

Steam scrubbers typically require a boiler to be included as a steam generator. After the cleaning liquid is heated by the boiler, the vapor is pumped to the flat plate applicator where it contacts the surface being cleaned.

An advantage of the steam system is that the temperature generated can be effective in killing various microorganisms, bacteria, microorganisms and mites. However, boiler systems suffer from high power and inefficient heating, and the high power requirements for steam generation do not allow sufficient surplus power to run the vacuum motor to recover the contaminated water from the cleaned surface, so cleaning performance is further hampered.

SUMMERY OF THE UTILITY MODEL

To address at least one of the above issues, the present disclosure provides a cordless surface cleaning apparatus and cleaning system.

According to one aspect of the present disclosure, there is provided a cordless surface cleaning apparatus comprising:

a base including at least a cleaning portion;

a first liquid reservoir for storing a cleaning liquid to be dispensed;

a vapor distributor connected to the first liquid reservoir and disposed on the base;

a liquid distributor connected to the first liquid reservoir, the liquid distributor being capable of distributing the cleaning liquid in the first liquid reservoir to the surface of the cleaning portion and/or to the surface to be cleaned;

a first fluid pathway extending at least between the first liquid reservoir and the vapor distributor;

a second liquid reservoir;

the vacuumizing suction port is connected with the second liquid storage device;

a second fluid pathway extending at least between the second liquid reservoir and the evacuation suction port;

a suction source in communication with the second fluid reservoir and the vacuum extraction suction opening, the suction source for generating a working air flow from the vacuum extraction suction opening, the working air flow being capable of flowing through at least the second fluid pathway and the second fluid reservoir for depositing a recovery fluid recovered from the cleaning of the surface to be cleaned by the base into the second fluid reservoir based on the working air flow;

a thick film heater located in said first fluid pathway, said thick film heater comprising a heating cavity and a thick film heating body, a first end of said heating cavity being associated with said first liquid reservoir and a second end of said heating cavity being associated with said vapor distributor; said thick film heater being adapted to heat at least a portion of the cleaning liquid in said heating cavity above the boiling point of the cleaning liquid to form a heated cleaning liquid vapour, said vapour dispenser being at least capable of dispensing said heated cleaning liquid vapour to a surface to be cleaned and/or a surface of said cleaning section in front of said cleaning section;

a rechargeable battery configured to power at least the thick film heater;

a first control element for controlling at least the thick film heater such that the thick film heater can selectively deliver heated cleaning liquid vapour to the surface of the cleaning portion and/or the surface to be cleaned;

wherein the first control element is configured to be associated with the rechargeable battery to selectively regulate the flow of steam output by the thick film heater in accordance with a change in voltage of the rechargeable battery.

A cordless surface cleaning apparatus according to at least one embodiment of the present disclosure, further comprising a pump arrangement associated with the first control element, the pump arrangement being disposed downstream of the first liquid reservoir and upstream of the thick film heater to enable pumping of cleaning liquid in the first liquid reservoir to the thick film heater.

According to at least one embodiment of the disclosure, the pump means is controlled by the first control element to regulate the liquid delivery flow to the thick film heater based on the voltage variation of the rechargeable battery.

A cordless surface cleaning apparatus according to at least one embodiment of the present disclosure, further comprising a body portion coupled to a base, the thick film heater being disposed on at least one of the base and the body portion.

A cordless surface cleaning apparatus according to at least one embodiment of the present disclosure, further comprising a second control element associated with the thick film heating body of the thick film heater, the second control element controlling power supply to the thick film heating body based at least on a set temperature or temperature range.

According to the wireless surface cleaning device of at least one embodiment of the present disclosure, the second control element is connected to the thick film heating body, and generates a control signal to stop the operation of the thick film heating body when the temperature of the thick film heating body is greater than or equal to a set temperature.

A cordless surface cleaning apparatus according to at least one embodiment of the present disclosure comprises a first trigger provided on a handle or body portion of the cordless surface cleaning apparatus for selective operation to control the activation and deactivation of the thick film heater.

According to at least one embodiment of the present disclosure, the heating chamber of the thick film heater is a tubular structure.

In accordance with at least one embodiment of the present disclosure, the wireless surface cleaning apparatus further comprises a suction source adapted to be coupled to the thick film heater and adapted to be powered by the rechargeable battery.

In accordance with at least one embodiment of the present disclosure, the cordless surface cleaning apparatus includes a base, a liquid dispenser, a vapor distributor, a liquid dispenser, and a steam outlet.

A cordless surface cleaning apparatus according to at least one embodiment of the present disclosure comprises a steam duct connected between the thick film heater and the steam distributor, and a cleaning liquid duct connected between the first liquid reservoir and the liquid distributor, the steam duct and the cleaning liquid duct being arranged spaced apart from each other.

According to the wireless surface cleaning equipment of at least one embodiment of this disclosure, the thick film heater sets up on the base, the arrangement of thick film heater transversely on the base, and the horizontal plane that the position of the first end of heating chamber of thick film heater is less than or equal to the horizontal plane that the position of the second end of heating chamber is located.

According to the wireless surface cleaning equipment of at least one embodiment of this disclosure, the thick film heater sets up on the main part, and the vertical arrangement of thick film heater on the main part, and the horizontal plane that the position of the first end of heating chamber of thick film heater is less than or equal to the horizontal plane that the position of the second end of heating chamber is located.

According to at least one embodiment of the present disclosure, the wireless surface cleaning device is a linear thick film heater having a cross-sectional shape of a circle, an ellipse or a rectangle.

According to the cordless surface cleaning apparatus of at least one embodiment of the present disclosure, the thick film heating body includes at least a first portion and a second portion, the first portion being located above the second portion in the vertical direction, the first portion having a resistance greater than that of the second portion.

According to the wireless surface cleaning apparatus of at least one embodiment of the present disclosure, the thick film heating body includes at least a first portion and a second portion, the first portion being located above the second portion in the vertical direction, the first portion not being provided with the thick film heating layer.

According to at least one embodiment of the present disclosure, a flow detector is disposed on the first fluid pathway, the flow detector being disposed between the first liquid reservoir and the thick film heater to detect a flow of cleaning liquid provided to the thick film heater.

A cordless surface cleaning apparatus according to at least one embodiment of the present disclosure, further comprising a third control element providing a control signal to the thick film heater to turn off the thick film heater or reduce heating power of the thick film heater based at least on the detection signal generated by the flow detector.

In accordance with another aspect of the present disclosure, there is provided a surface cleaning system comprising: the cordless surface cleaning apparatus of any one of the preceding claims; and a base station device; wherein the base station apparatus comprises a third liquid reservoir storing cleaning liquid to be dispensed to the first liquid reservoir of the cordless surface cleaning apparatus.

According to at least one embodiment of the present disclosure, the base station apparatus is capable of dispensing heated cleaning liquid to the cordless surface cleaning apparatus.

In accordance with at least one embodiment of the present disclosure, the base station apparatus comprises a heating device associated with the third liquid reservoir for heating the cleaning liquid in the third liquid reservoir or the cleaning liquid output by the third liquid reservoir to cause the base station apparatus to dispense the heated cleaning liquid to the first liquid reservoir of the cordless surface cleaning apparatus.

According to at least one embodiment of this disclosure, the surface cleaning system, the heating device is a thick film heater.

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 diagram of the overall structure of a cordless surface cleaning apparatus of one embodiment of the present disclosure. FIG. 2 is a schematic illustration of the vapor flow control principle of a thick film heater of a cordless surface cleaning apparatus of one embodiment of the present disclosure. Fig. 3 is a partial structural schematic view from one perspective of an cordless surface cleaning apparatus of an embodiment of the present disclosure, and fig. 4 is a partial structural schematic view from yet another perspective of an cordless surface cleaning apparatus of an embodiment of the present disclosure. The structure of the first liquid reservoir is shown in fig. 5 and 6. FIG. 7 is a schematic partial structural view of a main body portion of a cordless surface cleaning apparatus of one embodiment of the present disclosure. Fig. 8 is a schematic diagram of a second liquid reservoir of a cordless surface cleaning apparatus of one embodiment of the present disclosure. FIG. 9 is a schematic view of the internal partial structure of the main body portion of a cordless surface cleaning apparatus of one embodiment of the present disclosure. FIG. 10 is a partial schematic view of a cordless surface cleaning apparatus according to one embodiment of the present disclosure. FIG. 11 is a schematic view of a partial configuration of a cordless surface cleaning apparatus of one embodiment of the present disclosure. Fig. 12 to 14 are schematic structural views of a thick film heater according to a preferred embodiment of the present disclosure. FIG. 15 is a schematic view of a partial configuration of a cordless surface cleaning apparatus of one embodiment of the present disclosure. Fig. 16-19 illustrate the internal structure and bottom structure of the base of a cordless surface cleaning apparatus of one embodiment of the present disclosure. Fig. 20 to 22 are schematic structural views of a thick film heater provided on a base. Fig. 23 to 24 show the structure of a dry-heating preventing thick film heating body of one embodiment of the present disclosure. Fig. 25 shows a structure of a liquid dispenser of an embodiment of the present disclosure.

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 for purposes of illustration only and are not to be construed as limitations of the present 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. Thus, unless otherwise indicated, the features of the various embodiments/examples 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 noted, 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 between 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 "over," "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, "" … …, "" higher, "and" side (e.g., "in the sidewall") to describe one component's relationship to another (other) component as illustrated 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.

The cordless surface cleaning apparatus and cleaning system of the present disclosure is described below in conjunction with fig. 1-25.

According to one embodiment of the present disclosure, a cordless surface cleaning apparatus 1000 of the present disclosure comprises:

a base 100 including at least a cleaning portion 104;

a main body 200 coupled to the base 100;

a first liquid reservoir for storing a cleaning liquid to be dispensed;

a vapor distributor 103 connected to the first liquid storage and disposed on the base 100;

a liquid distributor 114 connected to the first liquid reservoir, the liquid distributor 114 being capable of distributing cleaning liquid within the first liquid reservoir to a surface of the cleaning portion 104 and/or to a surface to be cleaned;

a first fluid pathway extending at least between the first liquid reservoir and the vapor distributor 103;

a second liquid storage 202, wherein the second liquid storage 202 is at least used for storing recovered liquid recovered based on the base 100;

evacuation suction port 110 connected to second liquid reservoir 202;

a second fluid pathway extending at least between second liquid reservoir 202 and vacuum extraction port 110;

a suction source 203 communicating with the second fluid reservoir 202 and the vacuum suction opening 110, the suction source 203 being adapted to generate a working air flow from the vacuum suction opening 110, the working air flow being capable of flowing through at least the second fluid path and the second fluid reservoir 202, and to deposit a recovery fluid, which is recovered after cleaning of the surface to be cleaned by the base 100, into the second fluid reservoir 202 based on the working air flow;

a thick film heater located in the first fluid path, the thick film heater comprising a heating cavity and a thick film heating body at least partially disposed within or surrounding the heating cavity, a first end of the heating cavity being associated with the first liquid reservoir and a second end of the heating cavity being associated with the vapor distributor 103; the thick film heater is adapted to heat at least a portion of the cleaning liquid in the heating chamber above the boiling point of the cleaning liquid to form a heated cleaning liquid vapour, the vapour distributor 103 being at least capable of distributing the heated cleaning liquid vapour to a surface to be cleaned and/or a surface of the cleaning section in front of the cleaning section 104;

a rechargeable battery disposed at the main body portion 200 and configured to power at least the thick film heater;

a first control element for controlling at least the thick film heater so that the thick film heater can selectively deliver the heated cleaning liquid vapor to the surface of the cleaning portion 104 and/or the surface to be cleaned;

wherein the first control element is configured to be associated with the rechargeable battery to selectively regulate the flow of steam output from the thick film heater in accordance with a change in voltage of the rechargeable battery.

According to a preferred embodiment of the present disclosure, the first control unit generates a control signal to adjust the heating power of the thick film heater based on the voltage variation of the rechargeable battery to achieve adjustment of the steam flow rate output by the thick film heater.

Referring to fig. 1 to 3, the cordless surface cleaning apparatus 1000 is preferably composed of a base 100, a main body portion 200, and an operating portion 300, the base 100 being used to perform a cleaning/rinsing work of a surface to be cleaned. The operation unit 300 is operated by a user. The operating portion 300 may be a rod-shaped handle portion.

Fig. 1 is a schematic diagram of the overall structure of a cordless surface cleaning apparatus 1000 according to one embodiment of the present disclosure. Fig. 3 is a partial structural schematic view from one perspective of an cordless surface cleaning apparatus 1000 of an embodiment of the present disclosure, and fig. 4 is a partial structural schematic view from yet another perspective of the cordless surface cleaning apparatus 1000 of an embodiment of the present disclosure.

Fig. 12 to 14 are schematic structural views of a thick film heater 213 according to a preferred embodiment of the present disclosure. Referring to fig. 12-14, thick film heater 213 includes a first end portion 2131, a second end portion 2132 and a thick film heater 2134, wherein a heating cavity is formed in thick film heater 2134, cleaning liquid enters the heating cavity through first end portion 2131, and cleaning liquid is heated in the heating cavity to a temperature higher than the boiling point of the cleaning liquid to form cleaning liquid vapor, which is output through second end portion 2132. A heater holding portion 2133 may also be included, among other things, to hold the thick film heater on the body portion 200 or the base 100.

According to a preferred embodiment of the present disclosure, forming the heating cavity 2138 described above in a manner to increase the contact area with the thick film heater 2134 increases the efficiency of heating the cleaning liquid to form cleaning liquid vapor by increasing the contact area with the thick film heater 2134.

Preferably, the heating cavity may be provided as a labyrinth or a tube cavity (especially in the form of a curved tube).

The cleaning liquid described in the present disclosure may be clear water, a washing liquid, or a mixture thereof, etc., and the present disclosure is not particularly limited to the components of the cleaning liquid.

The cordless surface cleaning apparatus 1000 according to a preferred embodiment of the present disclosure, further comprising pump means associated with the first control element, the pump means being disposed downstream of the first liquid reservoir and upstream of the thick film heater to enable pumping of cleaning liquid in the first liquid reservoir to the thick film heater.

Referring to fig. 2, the outlet portion of the pump device is connected to the thick film heater and the inlet portion of the pump device is connected to the first liquid reservoir, preferably the rechargeable battery of the present disclosure also powers the pump device.

The pump device described in the present embodiment may be the second pump 212 shown in fig. 4, or the second pump 112 shown in fig. 16.

In fig. 2, the rechargeable battery is connected to the circuit board, and the rechargeable battery is connected to the pump device and the thick film heater via the circuit board and the corresponding power supply line, respectively.

In fig. 2, a thick film heater heats the cleaning liquid to generate heated cleaning liquid vapor, which is output via a vapor distributor (as indicated by the multiple arrows in fig. 2).

The first control element described above in the present disclosure includes a control circuit module or a control chip configured on a circuit board (e.g., a first circuit board or a second circuit board described below).

According to a preferred embodiment of the cordless surface cleaning apparatus 1000 of the present disclosure, the pump means described above is controlled by the first control element to regulate the fluid delivery flow to the thick film heater based on the voltage variation of the rechargeable battery.

The pump device described in the above of the present disclosure is capable of adjusting the liquid delivery flow rate to the thick film heater based on the voltage variation of the rechargeable battery under the control of the first control element, thereby achieving the adjustment control of the vapor flow rate output by the thick film heater.

According to a preferred embodiment of the present disclosure, the adjustment of the flow rate of the vapor output by the

thick film heater

113, 213 is achieved by controlling the flow rate of the liquid delivered to the

thick film heater

113, 213 by the pump device.

According to yet another preferred embodiment of the present disclosure, the voltage variation described above comprises a continuous drop in voltage, the first control unit reducing the steam flow output by the thick film heater based on the continuous drop in voltage of the rechargeable battery. In this embodiment, it is preferred that the steam flow output by the thick film heater is reduced to optimise the lifetime of the thick film heater/cordless surface cleaning apparatus when the first control element monitors a continuous drop in the voltage of the rechargeable battery.

The continuous voltage drop of the rechargeable battery is preferably characterized by a voltage variation within a preset time, the preset time may be 60s, 2min, 3min, etc., and those skilled in the art may select/adjust the preset time and the voltage variation within the preset time according to a battery performance index, a thick film heater performance index, a pump device performance index, etc., all falling within the protection scope of the present disclosure.

According to a further preferred embodiment of the present disclosure, the cordless surface cleaning apparatus 1000 is pre-set with a characteristic voltage value, and when the output voltage of the rechargeable battery reaches the characteristic voltage value, the first control unit outputs a control signal to the pump device to adjust the above-described liquid delivery flow rate of the pump device to the thick film heater to adjust the vapor flow rate of the thick film heater.

According to the cordless surface cleaning apparatus 1000 of the preferred embodiment of the present disclosure, a plurality of characteristic voltage values are preset, and when the output voltage of the rechargeable battery reaches at least one of the plurality of characteristic voltage values, the first control unit outputs a corresponding control signal to the pump device, and adjusts the liquid delivery flow rate of the pump device to the thick film heater to adjust the vapor flow rate of the thick film heater.

In some embodiments, only 1 characteristic voltage value may be set, and those skilled in the art may adjust the number of the characteristic voltage values and select/adjust the magnitude of the characteristic voltage value, all of which fall within the protection scope of the present disclosure.

With the cordless surface cleaning apparatus 1000 of the various embodiments described above, the

thick film heaters

113, 213 of the present disclosure are provided on at least one of the base 100 and the main body portion 200.

The surface cleaning apparatus 1000 of the present disclosure may be provided with one thick film heater provided on the base or the main body portion, or may be provided with two thick film heaters provided on the base and the main body portion, respectively.

According to one embodiment of the present disclosure, referring to fig. 4, 11-14, the thick film heater 213 is disposed on the main body portion 200, and the thick film heater 213 is vertically disposed on the main body portion 200 (i.e., disposed along an axial direction of the main body portion 200), and a plane in which the first end portion 2131 of the thick film heater 213 is located is lower than a plane in which the second end portion 2132 is located.

The first liquid storage 201 supplies cleaning liquid to the thick film heater 213 through the first end portion 2131 of the thick film heater 213, the cleaning liquid is heated by the thick film heater 213 to generate steam, and the steam is output to the steam distributor 103 through the second end portion 2132 of the thick film heater 213 via the steam pipe.

Referring to fig. 4, the main body part 200 has a cavity structure, and the thick film heater 213 is disposed within the cavity structure of the main body part 200.

According to another embodiment of the present disclosure, referring to fig. 15, 16 and 19 to 21, the thick film heater 113 is provided on the base 100, the thick film heater 113 is arranged laterally on the base 100 (i.e., arranged along the lateral direction of the base 100), and the first end portion 1131 of the thick film heater 113 is located at a level lower than or equal to the level of the location of the second end portion 1132.

Preferably, the first end portion 1131 of the thick film heater 113 is located at a lower level than the second end portion 1132.

As can be seen from the above description, the wireless surface cleaning apparatus 1000 of the present disclosure can offset the factor of too fast water flow rate due to gravity by keeping the horizontal plane of the first ends 1131, 2131 of the

thick film heaters

113, 213 at the same level or lower than the horizontal plane of the second ends of the thick film heaters, so that the water entering the thick film heaters is evaporated more sufficiently to ensure that the steam distributor 103 does not eject the heated cleaning liquid.

Wherein the base 100 has a cavity structure, and the thick film heater 113 is disposed within the cavity structure of the base 100.

Referring to fig. 15 and 16, the vapor generated by the thick film heater 113 is delivered to the vapor distributor 103 via the vapor line 101.

With the above-described cordless surface cleaning apparatus 1000 of each embodiment, the heating cavity of the

thick film heaters

113, 213 is formed within the

thick film heaters

1134, 2134.

The heating cavities of the

thick film heaters

113, 213 shown in fig. 12 to 14 and 20 to 22 are formed within the

thick film heaters

1134, 2134.

Preferably, referring to fig. 12-14 and 20-22, fluid guides 1135, 2135 are provided within

thick film heaters

1134, 2134, with the heating cavity of

thick film heaters

113, 213 being formed between the inner walls of

thick film heaters

1134, 2134 and fluid guides 1135, 2135.

More preferably, fluid guides 1135, 2135 described above are spiral guides such that a spiral heating cavity is formed between the inner walls of

thick film heaters

1134, 2134 and fluid guides 1135, 2135 to increase heating efficiency.

With the cordless surface cleaning apparatus 1000 of the present disclosure, the

thick film heaters

113, 213 are preferably elongate thick film heaters, and with reference to fig. 4, 11, 16, 17, the cross-sectional shape of the

thick film heaters

113, 213 may be circular, elliptical, rectangular, or the like.

Fig. 16-19 show an internal schematic and a bottom schematic of the base 100 of the cordless surface cleaning apparatus 1000 of one embodiment of the present disclosure, respectively.

Referring to fig. 16 to 19, the vapor dispenser 103 includes vapor dispensing ports 1031, the vapor dispenser 103 being connected to the thick film heater 113. The heating chamber of the thick film heater 113 is in communication with the steam distribution port 1031 such that heated steam distributed from the steam distribution port 1031 can be applied to the surface to be cleaned or to the cleaning section 104.

According to a preferred embodiment of the present disclosure, referring to fig. 16 and 17, a thick film heater 113 is disposed within the base 100, and a cleaning portion 104, such as a rotating brush, is provided at the rear end of the steam dispenser 103 to help loosen fixed debris, stains, from the surface being cleaned (e.g., floor tiles, etc.). Wherein the liquid distributor 114 is arranged within the base 100 and is adapted to communicate with the first liquid reservoir 201 bypassing the thick film heater 113, such that the first liquid reservoir 201 distributes the cleaning liquid evenly over the cleaning portion 104, e.g. a napped rotating brush surface. The first liquid reservoir 201 supplying fluid to the thick film heater 113 and liquid distributor 114 may contain heated cleaning liquid if desired.

According to a preferred embodiment of the present disclosure, referring to fig. 19, the liquid distributor 114 of the present disclosure uses the liquid distributor structure of the roll brush assembly described in chinese patent CN 202110688477.3.

According to another preferred embodiment of the present disclosure, referring to fig. 25, a liquid distributor 114 of the present disclosure is disposed at the rear of the cleaning portion 104, the liquid distributor 114 has a liquid outlet surface, a plurality of liquid outlet holes are formed on the liquid outlet surface, the liquid outlet holes may be in a transverse single-row structure or in a transverse multi-row structure, and the cleaning liquid output through the liquid outlet holes is provided to the surface of the cleaning portion 104 (see the direction of arrows in fig. 25).

Referring to fig. 25, the liquid outlet surface is preferably an inclined liquid outlet surface to facilitate the transportation of the cleaning liquid to the surface of the cleaning portion 104.

With the cordless surface cleaning apparatus 1000 of each of the embodiments described above, it is preferred that there is further included a first trigger (one of the plurality of control keys 301) provided on the operating portion 300 or the main body portion 200 of the cordless surface cleaning apparatus 1000 for selective operation to control the activation and deactivation of the

thick film heaters

113, 213.

Preferably, the first trigger comprises a steam function control (which may be one of the controls 301).

By operating the steam function control key, the cleaning liquid can be guided from the first liquid reservoir 201 to the heating steam position in the

thick film heater

113, 213, i.e. in the tubular enclosure (heating cavity) formed surrounded by the thick

film heating body

1134, 2134, where the cleaning liquid is heated to above the boiling point of the cleaning liquid, e.g. 100 degrees celsius, to generate steam.

In fig. 4, a first circuit board 205 is further disposed in the cavity of the main body 200, and a steam function control circuit may be formed on the first circuit board 205, and the steam function control circuit generates a steam function control signal based on the operation of the steam function control key to start or stop the heating function of the thick film heater 213.

Referring to fig. 3, according to a preferred embodiment of the present disclosure, the wireless surface cleaning device 1000 further includes a touch panel or touch screen 209, which may include control keys displayed on the touch panel or touch screen 209, and steam function control keys, steam temperature control keys, etc., may be displayed on the touch panel or touch screen 209.

FIG. 10 is a schematic partial configuration of a cordless surface cleaning apparatus 1000 according to one embodiment of the present disclosure, and referring to FIG. 10, the cordless surface cleaning apparatus 1000 further comprises a diverter assembly 215 coupled to at least the first liquid reservoir 201, a first outlet portion 2112 of the diverter assembly 215 coupled to the

thick film heaters

113, 213, a second outlet portion 2122 of the diverter assembly 215 coupled to a liquid distributor 114 disposed on the base 100, the first outlet portion 2112 and the second outlet portion 2122 of the diverter assembly 215 adapted to be selectively controlled such that cleaning liquid flows from the first liquid reservoir 201 to at least one of the

thick film heaters

113, 213 and the liquid distributor 114.

Based on the flow dividing assembly 215, the cleaning liquid in the first liquid storage 201 of the present disclosure may be selectively sent to the

thick film heaters

113, 213 and/or the liquid distributor 114 depending on whether the floor washing function control key and/or the steam function control key on the operating part 300 is activated.

The floor-washing function control key may be one of the control keys 301 on the operation unit 300, or may be a floor-washing function control key displayed on the touch panel or the touch screen 209 described above.

With the cordless surface cleaning apparatus 1000 of the various embodiments described above, in any event, vacuuming can be performed by turning on the suction source 203 to create suction at the vacuum extraction suction opening 110 to remove dry or wet debris from the surface being cleaned without the application of steam or cleaning liquid.

When the cleaning liquid is required to be used for surface cleaning, the floor-washing function control key is operated, the cleaning liquid in the first liquid storage 201 enters the liquid supply pipeline 210 and flows out to the surface of the cleaning part 104 such as a rotary brush through the outlet of the liquid distributor 114, and the rolling rotary brush dissolves and removes the debris/dirt and the like on the floor along with the cleaning liquid.

When it is required to apply heated steam onto a surface to be cleaned, the steam function control key is operated. Thus, heated steam can be selectively applied to the surface to be cleaned to heat the surface to be cleaned. This function provides the user with the option of alternating between heated vapor and liquid. When the steam function control is operated, e.g., squeezed, cleaning liquid flows through the liquid supply line 210 and into the

thick film heater

113, 213, and the cleaning liquid is rapidly heated to heated steam, dispensed from the steam dispensing openings 1031 (referring to fig. 18, which illustratively shows 6 steam dispensing openings 1031), and released onto the surface being cleaned. After the surface being cleaned is steamed, the tough surface adhering debris is softened and removed, thereby being drawn into the vacuum suction opening 110 by the action of the rolling rotating brush (see FIG. 19), and any liquid generated on the surface by the heated steam or cleaning liquid is collected into the vacuum suction opening 110 and eventually into the second liquid reservoir 202. Preferably, a first wiper strip (upper wiper strip) and a second wiper strip (lower wiper strip) may be disposed on both sides of the vacuum suction port 110.

According to a preferred embodiment of the present disclosure, the heating steam may be continuously applied to the surface to preheat the surface, which in turn heats any cleaning liquid that may be subsequently applied to the surface to a higher temperature than the surface to be treated or other surface to be cleaned, and further, as the temperature of the cleaning liquid applied to the surface to be treated increases, the heated surface to be treated will reduce any heat loss from the heated cleaning liquid applied to the surface to be treated.

According to a preferred embodiment of the present disclosure, the cleaning part 104, e.g., the rotary brush, may be driven by a drive motor separate from the suction source 203, and may be individually controlled so that the cleaning part 104, the suction source 203, may be operated independently of the

thick film heater

113, 213. In addition, the vacuum motor of the suction source 203 and the drive motor of the rotating brush may be turned off, enabling the cordless surface cleaning apparatus 1000 of the present disclosure to apply only heated steam, removing the working airflow generated by the vacuum motor and the additional air circulation generated by the rotating brush resulting in higher surface temperatures, thereby enhancing the cleaning effect.

Fig. 7 is a partial structural schematic diagram of a body portion 200 of a cordless surface cleaning apparatus of one embodiment of the present disclosure. The first liquid storage 201 includes a first operation portion 2014, and the first liquid storage 201 can be detached from the main body portion 200 or the first liquid storage 201 can be attached to the main body portion 200 by operating the first operation portion 2014. A suction source 203 is provided below the first liquid tank 201, and a second liquid tank 202 is provided below the suction source 203, wherein the second liquid tank 202 includes a second operation portion 2021, and the second liquid tank 202 can be detached from the main body portion 200 or the second liquid tank 202 can be attached to the main body portion 200 by operating the second operation portion 2021.

Fig. 8 is a schematic structural diagram of the second liquid storage 202 of the cordless surface cleaning apparatus 1000 according to an embodiment of the disclosure, an air inlet 2022 is disposed at the bottom of the second liquid storage 202, the working air flow generated by the suction source 203 enters the second liquid storage 202 through the air inlet 2022, the working air flow enters a solid dirt recovery portion 2041 disposed in the second liquid storage 202, the solid dirt is stored by the solid dirt recovery portion 2041, and the recovered liquid carried by the working air flow is blocked by a filter assembly 2042 (e.g., a hepa assembly), falls back, and is stored in the second liquid storage 202.

Fig. 9 is a partial structural diagram of the inside of the main body 200 of the cordless surface cleaning apparatus 1000 according to one embodiment of the present disclosure, and referring to fig. 9, a solid dirt recovery part 2041 is provided below the suction source 203, and the solid dirt recovery part 2041 is provided within the second liquid storage 202.

Also shown in fig. 9 is a sound element 206, by which sound element 206 a warning signal generated by wireless surface cleaning apparatus 1000 can be audibly output.

With the wireless surface cleaning apparatus 1000 of each of the above embodiments, it is preferred that it further comprises a second control element, which may comprise a steam temperature control circuit on the first circuit board 205, the second control element being associated with the

thick film heaters

1134, 2134 of the

thick film heaters

113, 213, the second control element being at least for controlling the power supply to the

thick film heaters

1134, 2134 according to a set temperature or temperature range. The second control element preferably further comprises a steam temperature control key (which may be one of the control keys 301), and the steam temperature control circuit generates a steam temperature control signal based on the operation of the steam temperature control key to control parameters such as heating power of the thick film heating body.

Preferably, the second control element is connected to the

thick film heaters

1134, 2134, and generates a control signal to stop the operation of the

thick film heaters

1134, 2134 when the temperature of the

thick film heaters

1134, 2134 is greater than or equal to a set temperature, and the steam temperature control circuit of the second control element of this embodiment can generate a corresponding control signal based on the temperature of the

thick film heaters

1134, 2134.

Wherein the cleaning liquid applied to the surface to be cleaned by the cleaning portion 104, such as a rotating brush, may be heated.

Referring again to fig. 1-2, the base 100 of the cordless surface cleaning apparatus 1000 of the present disclosure is adapted to move over a surface to be cleaned; the main body 200 is pivotally mounted on the base 100; the surface cleaning apparatus 1000 further comprises a telescopic operating part 300 mounted on the main body part 200, the operating part 300 being at least used for manipulating the base 100 on the surface to be cleaned.

According to one embodiment of the present disclosure, the thick film heater 113 may be disposed on the base 100 at a position close to the vapor distributor 103. The hose extends from upstream of the thick film heater 113 to the first liquid reservoir 201 and the vapour line extends downstream of the thick film heater 113 to the vapour distributor 103.

Preferably, a steam valve is provided at the heating chamber downstream outlet of the

thick film heater

113, 213, and when the steam valve is closed, the heated steam is under pressure to produce a superheated state. The generated heating steam exerts pressure on the hot solution and forces cleaning of the surface to be cleaned when the steam valve is opened. Once equilibrium is reached, the hot solution fluid is replaced by the same volume of heated steam under increased pressure, which is supplied under pressure to the surface to be cleaned when the steam valve is opened. During cleaning of the surface with heated steam, the liquid distribution to the cleaning portion 104, e.g., a rotating brush, can be turned off or on. When the liquid applying device is closed, the rotary brush is in a liquid applying state, and when the liquid applying device is opened, the rotary brush is in a liquid applying state.

According to a preferred embodiment of the present disclosure, referring to fig. 16 to 19, the vapor distributor 103 and the liquid distributor 114 are both provided on the base 100, and the vapor distributor 103 is located in front of the liquid distributor 114.

Referring to fig. 16, a first pump 111 and a second pump 112 (i.e., the pump devices described above in the present disclosure) are used to pump cleaning liquid to a liquid distributor 114 and a thick film heater 113, respectively.

Referring to fig. 10, according to still another preferred embodiment of the present disclosure, a first pump 211 and a second pump 212 (i.e., the pump device described above in the present disclosure) are disposed below the flow dividing assembly 215, the flow dividing assembly 215 has a liquid outlet end in communication with both the first pump 211 and the second pump 212 in addition to a liquid inlet end, and the flow dividing of the cleaning liquid from the flow dividing assembly 215 to the first pump 211 and/or the second pump 212 is achieved by activating/deactivating the first pump 211 and/or the second pump 212. In this embodiment, the flow dividing assembly 215 has a three-way structure.

The present disclosure also shows, in fig. 5 and 6, the structure of the first liquid tank 201, the first liquid tank 201 including an inlet 2011 and an outlet 2012, the first liquid tank 201 having a cavity containing cleaning liquid.

According to a preferred embodiment of the present disclosure, one end portion of the first liquid tank 201 is formed with a slope portion 2013, so that the first liquid tank 201 can be more easily detached from the main body portion 200 or the first liquid tank 201 can be attached to the main body portion 200 by providing the slope portion 2013.

A second circuit board may also be provided in the base 100 of the cordless surface cleaning apparatus of the present disclosure, at least for controlling the driving means 109 or a heater or the like which may be provided in the base 100, the driving means 109 being adapted to output a driving action to drive the cleaning part 104, e.g. a rotating brush, into operation.

Referring to fig. 18 and 19, the cleaning portion 104 includes a flexible portion 1040 (e.g., sponge, fluff, etc.), and the flexible portion 1040 wraps the liquid distributor 114 such that the cleaning liquid output via the liquid distributor 114 penetrates to an outer surface of the liquid distributor 114 in a non-spraying manner. In fig. 16, four liquid output apertures 1141 of the liquid dispenser 114 are exemplarily shown.

In providing the thick film heater 113 on the base 100, referring to fig. 20 to 22, the thick film heater 113 may employ a thick film heater of the same or similar structure as that shown in fig. 12 to 14.

For the thick film heater described in the present disclosure, the thick film heater may be a thick film heater using a stainless steel material as a substrate, or a thick film heater using a metal material as a substrate, the thick film heat generating layer (e.g. the resistance layer) is disposed on the outer surface of the substrate through the inner insulating medium layer, and the outer insulating medium layer is disposed on the outer surface of the thick film heat generating layer.

In light of the teachings of the present disclosure, those skilled in the art can modify the configuration of the thick film heater, all falling within the scope of the present disclosure.

The thick film heater is powered to generate heat to heat the cleaning liquid to form a cleaning liquid vapor.

With the wireless surface cleaning apparatus 1000 of each of the above embodiments, it is preferable that the thick film heating body includes at least a first portion (a portion above the broken line in fig. 23) and a second portion (a portion below the broken line in fig. 23), the first portion being located above the second portion in the vertical direction, the first portion having a resistance greater than that of the second portion.

In the disclosure, for the thick film heating body horizontally disposed in the base, referring to fig. 23, by setting the resistance value of the first portion (the upper half is taken as an example) of the thick film heating body to be greater than the resistance value of the second portion (the lower half is taken as an example), the heating power of the upper half is less than that of the lower half, the temperature of the upper half rises slowly, the temperature is relatively low, and the generated heat and the consumed heat are balanced to achieve the effect of preventing dry burning.

The dimensions of the first portion and the second portion may be adjusted by one skilled in the art and are within the scope of the present disclosure.

Referring to fig. 24 (fig. 23 is a sectional view in a-a direction in fig. 24), a cordless surface cleaning apparatus 1000 according to still another preferred embodiment of the present disclosure, a thick film heating body thereof includes a first portion (a portion above a broken line in fig. 23, 24) located above the second portion in a vertical direction, and a second portion (a portion below the broken line in fig. 23, 24) where the thick film heating layer is not provided (the thick film heating layer is indicated by a black thick line in fig. 23).

The thick film heater of this embodiment does not set up the thick film zone of heating through the first part with the thick film heating body (above half is the example), because the thick film heater transversely sets up, when the less unable cavity of filling the thick film heater of clean liquid flow (clean liquid can be clear water, the mixed liquid of scrubber and clear water etc.), the upper portion region of thick film heating body can not produce the heat owing to not set up the thick film zone of heating to do not take place to burn futilely.

Similarly, when the thick film heating body is vertically arranged in the main body part 200, the first part (upper part) and the second part (lower part) of the thick film heating body in the vertical direction can be set to be smaller than the second part in resistance value, or the first part is not provided with the thick film heating layer, so as to achieve the purpose of preventing dry burning.

With the cordless surface cleaning apparatus 1000 of the various embodiments described above, it is preferable that a flow rate detector is provided on the first fluid path, the flow rate detector being provided between the first liquid reservoir and the thick film heater to detect the flow rate of the cleaning liquid supplied to the thick film heater.

In this embodiment, the flow detector is arranged to monitor the flow rate of the cleaning liquid supplied to the thick film heater, and the flow detector may be any type of flow meter in the prior art, which falls within the protection scope of the present disclosure.

For the cordless surface cleaning apparatus 1000 of each of the above embodiments, it is preferable that the third control element further comprises a third control element providing a control signal to the thick film heater to turn off the thick film heater or to reduce the heating power of the thick film heater based on at least the detection signal generated by the flow detector.

The third control element may be disposed on the first circuit board 205 or be a part of the first circuit board 205, or may be disposed on a second circuit board on the base or be a part of the second circuit board.

Wherein the third control element provides the control signal to the thick film heater when the flow signal detected by the flow detector is equal to or less than a preset threshold, and a plurality of preset thresholds may be set, for example, the third control element provides the first control signal to reduce the heating power of the thick film heater when the flow signal is equal to or less than the first preset threshold, and the third control element provides the second control signal to turn off the thick film heater when the flow signal is equal to or less than the second preset threshold.

In light of the technical solutions of the present embodiment, those skilled in the art can adjust the threshold size, the threshold number, and the like of the flow rate signal of the flow rate detector, and all of them fall within the scope of the present disclosure.

The third control element of the present disclosure may be a control chip or a part of the control chip, and the present disclosure does not particularly limit a specific control circuit thereof.

In general, external power cords are inconvenient to use for larger rooms, and therefore, it is desirable to employ rechargeable power sources. However, the capacity of rechargeable power sources is limited and the time of use of the surface cleaning apparatus is greatly reduced when heated cleaning liquid and steam are simultaneously used. Thus, in some further embodiments of the present disclosure, the heated liquid is provided by a base station apparatus associated with the wireless surface cleaning apparatus 1000.

A cleaning system according to one embodiment of the present disclosure includes: the cordless surface cleaning apparatus 1000 of any one of the embodiments described above; and a base station apparatus.

Wherein, the base station equipment includes:

a third liquid reservoir storing cleaning liquid to be dispensed to the first liquid reservoir 201 of the cordless surface cleaning apparatus 1000.

The base station device of the present disclosure may adopt the structure of the base station device in chinese patent 202110776224.1.

The base station apparatus can dispense heated cleaning liquid to the wireless surface cleaning apparatus 1000.

Preferably, the base station apparatus comprises heating means associated with the third liquid reservoir for heating the cleaning liquid in the third liquid reservoir or the cleaning liquid output by the third liquid reservoir such that the base station apparatus dispenses the heated cleaning liquid to the first liquid reservoir 201 of the wireless surface cleaning apparatus 1000.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example" or "some examples" or the like 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 present disclosure. 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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly 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

1. A cordless surface cleaning apparatus comprising:

a base including at least a cleaning portion;

a first liquid reservoir for storing a cleaning liquid to be dispensed;

a second liquid reservoir;

a rechargeable battery configured to power at least the thick film heater; and

2. The cordless surface cleaning apparatus of claim 1, further comprising a pump arrangement associated with the first control element, the pump arrangement being disposed downstream of the first liquid reservoir and upstream of the thick film heater to enable pumping of cleaning liquid in the first liquid reservoir to the thick film heater.

3. The cordless surface cleaning apparatus of claim 2, wherein the pump means is controlled by the first control element to regulate the flow of liquid delivery to the thick film heater based on voltage variations of the rechargeable battery.

4. The cordless surface cleaning apparatus of any one of claims 1 to 3, further comprising a body portion coupled to the base, the thick film heater being provided on at least one of the base and the body portion.

5. The cordless surface cleaning apparatus of any one of claims 1 to 3, further comprising a second control element associated with the thick film heating body of the thick film heater, the second control element controlling power supply to the thick film heating body based at least on a set temperature or temperature range.

6. The cordless surface cleaning apparatus of claim 5, wherein the second control element is associated with the thick film heating body, the second control element generating a control signal to stop operation of the thick film heating body when the temperature of the thick film heating body is greater than or equal to a set temperature.

7. The cordless surface cleaning apparatus of claim 1, comprising a first trigger provided on a handle or body portion of the cordless surface cleaning apparatus for selective operation to control the activation and deactivation of the thick film heater.

8. The cordless surface cleaning apparatus of claim 1, wherein the heating chamber of the thick film heater is of tubular construction.

9. The cordless surface cleaning apparatus of claim 1, wherein the thick film heater and the suction source are connected to the rechargeable battery and adapted to be powered by the common rechargeable battery.

10. The cordless surface cleaning apparatus of claim 1, wherein the steam dispenser and the liquid dispenser are both provided on the base, and the steam dispenser is located in front of the liquid dispenser.

11. The cordless surface cleaning apparatus of claim 1, comprising a steam conduit connected between the thick film heater and the steam distributor, and a cleaning liquid conduit connected between the first liquid reservoir and the liquid distributor, the steam conduit and the cleaning liquid conduit being disposed spaced apart from one another.

12. The cordless surface cleaning apparatus of claim 1, wherein the thick film heater is provided on the base, the thick film heater being arranged laterally on the base and the first end of the heating chamber of the thick film heater being located at a level lower than or equal to the level at which the second end of the heating chamber is located.

13. The cordless surface cleaning apparatus of claim 1, wherein the thick film heater is provided on a main body portion of the cordless surface cleaning apparatus, and the thick film heater is arranged vertically on the main body portion, and the position of the first end of the heating chamber of the thick film heater is at a level lower than or equal to the level of the position of the second end of the heating chamber.

14. The cordless surface cleaning apparatus of claim 12 or 13, wherein the thick film heater is an elongate thick film heater having a circular, oval or rectangular cross-sectional shape.

15. Cordless surface cleaning apparatus according to claim 14, wherein the thick film heating body comprises at least a first portion and a second portion, the first portion being located above the second portion in the vertical direction, the first portion having a greater electrical resistance than the second portion.

16. The cordless surface cleaning apparatus of claim 12, wherein the thick film heating body comprises at least a first portion and a second portion, the first portion being located above the second portion in the vertical direction, the first portion being provided without a thick film heating layer.

17. The cordless surface cleaning apparatus of claim 1, wherein a flow detector is provided in the first fluid path, the flow detector being provided between the first liquid reservoir and the thick film heater to detect the flow of cleaning liquid provided to the thick film heater.

18. The cordless surface cleaning apparatus of claim 17, further comprising a third control element providing a control signal to the thick film heater to turn off the thick film heater or reduce heating power of the thick film heater based at least on the detection signal generated by the flow detector.

19. A cleaning system, comprising:

the cordless surface cleaning apparatus of any one of claims 1 to 18; and

a base station device;

wherein the base station apparatus comprises a third liquid reservoir storing cleaning liquid to be dispensed to the first liquid reservoir of the cordless surface cleaning apparatus.

20. The cleaning system of claim 19, wherein the base station apparatus is capable of dispensing heated cleaning liquid to the cordless surface cleaning apparatus.

21. The cleaning system of claim 20, wherein the base station apparatus comprises a heating device associated with the third liquid reservoir for heating the cleaning liquid in the third liquid reservoir or the cleaning liquid output by the third liquid reservoir to cause the base station apparatus to dispense the heated cleaning liquid to the first liquid reservoir of the cordless surface cleaning apparatus.

22. The cleaning system of claim 21, wherein the heating device is a thick film heater.