阅读说明：本技术 液位检测装置、供应装置及表面清洁系统 (Liquid level detection device, supply device and surface cleaning system ) 是由 唐成 段飞 钟亮 于 2021-04-26 设计创作，主要内容包括：本公开提供了一种液位检测装置,包括：浮子,浮子包括浮子主体以及磁性部；浮子导向部,浮子在液体浮力作用下基于液位的变化能够沿着浮子导向部在竖直方向上移动；以及,多个磁信号传感器,多个磁信号传感器沿竖直方向设置,当浮子对多个磁信号传感器之一触发时,被触发的磁信号传感器产生触发信号。本公开还提供一种供应装置及表面清洁系统。(The present disclosure provides a liquid level detection device, including: a float including a float body and a magnetic portion; a float guide portion along which the float is movable in a vertical direction based on a change in liquid level under a buoyancy of the liquid; and a plurality of magnetic signal sensors disposed in a vertical direction, the triggered magnetic signal sensor generating a trigger signal when the float triggers one of the plurality of magnetic signal sensors. The present disclosure also provides a supply device and a surface cleaning system.)

1. A liquid level detection device, comprising:

a float including a float body and a magnetic portion;

a float guide along which the float is movable in a vertical direction based on a change in a liquid level under a buoyancy of the liquid; and

and the plurality of magnetic signal sensors are arranged along the vertical direction, and when the floater triggers one of the plurality of magnetic signal sensors, the triggered magnetic signal sensor generates a triggering signal.

2. The liquid level detecting apparatus according to claim 1, wherein the number of the floats is two or more, the number of the magnetic signal sensors is one more than the number of the floats, the float guide portion is provided with guide grooves having the same number as the number of the floats, the respective floats move along the respective guide grooves based on a change in the liquid level by buoyancy of the liquid, and each of the magnetic signal sensors can be triggered by only one float.

3. The liquid level detecting device according to claim 1, wherein the number of the floats is two or more, the number of the magnetic signal sensors is one more than that of the floats, the float guide portion is provided with one less limit portion than that of the floats, each float moves along the float guide portion based on a change in the liquid level under the buoyancy of the liquid, adjacent two floats are spaced by one limit portion, and each magnetic signal sensor can be triggered by only one float.

4. A liquid level detection apparatus according to claim 2 or 3, wherein the number of the floats is two, that is, an upper float and a lower float, and the number of the magnetic signal sensors is three, that is, an upper sensor, a middle sensor and a lower sensor, the upper sensor and the middle sensor being capable of being triggered by the upper float, and the lower sensor being capable of being triggered by the lower float.

5. A liquid level detection apparatus according to claim 2 or 3, wherein the number of floats is two, that is, an upper float and a lower float, and the number of magnetic signal sensors is three, that is, an upper sensor, a middle sensor and a lower sensor, the upper sensor being capable of being triggered only by the upper float, and the middle sensor and the lower sensor being capable of being triggered by the lower float.

6. The liquid level detection device of claim 1, wherein the magnetic portion is embedded within the float body.

7. A liquid level detection device as claimed in any one of claims 1 to 3, wherein the magnetic signal sensor is a hall sensor or a reed switch arrangement.

8. The liquid level detection apparatus according to any one of claims 1 to 3, wherein the float guide is provided inside a liquid tank, and the magnetic signal sensor is provided outside the liquid tank;

optionally, when the upper floater is located at the highest position of the upper floater, the upper floater triggers the upper sensor, the upper sensor generates a first trigger signal, and the middle sensor and the lower sensor do not generate trigger signals;

optionally, when the upper float is located between the upper sensor and the middle sensor, the upper float does not trigger the upper sensor, and the upper sensor, the middle sensor and the lower sensor do not generate a trigger signal;

optionally, when the upper float is located at the lowest position of the upper float and the lower float is higher than the lowest position of the lower float, the upper float triggers a middle sensor, the middle sensor generates a second trigger signal, and the upper sensor and the lower sensor do not generate trigger signals;

optionally, when the upper float is located at the lowest position of the upper float and the lower float is located at the lowest position of the lower float, the upper float triggers a middle sensor, the middle sensor generates a second trigger signal, the lower float triggers the lower sensor, and the lower sensor generates a third trigger signal;

optionally, the liquid level sensor further comprises a processing device, the processing device is in communication connection with the magnetic signal sensors, and the processing device generates corresponding liquid level indicating signals based on the trigger states of the magnetic signal sensors;

optionally, when the upper float is located at the highest position of the upper float, the upper float triggers the upper sensor, the upper sensor generates a first trigger signal, the lower float triggers the middle sensor, the middle sensor generates a second trigger signal, and the lower sensor does not generate a trigger signal;

optionally, when an upper float is located between the upper sensor and the middle sensor, the upper float does not trigger the upper sensor, the lower float triggers the middle sensor, the middle sensor generates a second trigger signal, and the lower sensor does not generate a trigger signal;

optionally, when the upper float is located at the lowest level of the upper float and the lower float is higher than the lowest level of the lower float, the upper float does not trigger the upper sensor, and the lower float does not trigger the middle sensor and the lower sensor;

optionally, when the upper float is located at the lowest position of the upper float and the lower float is located at the lowest position of the lower float, the upper float does not trigger the upper sensor, the lower float triggers the lower sensor, and the lower sensor generates a third trigger signal;

optionally, the liquid level sensor further comprises a processing device, the processing device is in communication connection with the magnetic signal sensors, and the processing device generates corresponding liquid level indicating signals based on the trigger states of the magnetic signal sensors;

optionally, the system further comprises a liquid storage tank in-place detection device, and when the liquid storage tank in-place detection device does not generate a liquid storage tank in-place signal, the processing device does not generate a liquid level indication signal;

optionally, the system further comprises a liquid storage tank in-place detection device, and when the liquid storage tank in-place detection device does not generate a liquid storage tank in-place signal, the processing device does not generate a liquid level indication signal;

optionally, the liquid storage tank in-place detection device is a trigger switch or a photoelectric sensor;

optionally, at least one of the plurality of magnetic signal sensors is a linear hall sensor, and the linear hall sensor judges whether the liquid storage tank is in place or not based on the magnetic field intensity of the floater;

optionally, at least one of the plurality of magnetic signal sensors is a linear hall sensor, and the linear hall sensor judges whether the liquid storage tank is in place or not based on the magnetic field intensity of the floater;

optionally, the processing means does not generate a level indication signal when the tank is not in place.

9. A supply device, comprising:

a liquid storage tank for storing a cleaning liquid; and

the liquid level detection device according to any one of claims 1 to 8, which detects a liquid level of a cleaning liquid in a tank.

10. A surface cleaning system, comprising:

the supply device of claim 9; and

a cleaning device capable of being supplied with a cleaning liquid by the supply means;

optionally, the supply device further recovers the remaining liquid in the cleaning apparatus.

Technical Field

The disclosure belongs to the technical field of cleaning, and particularly relates to a liquid level detection device, a supply device and a surface cleaning system.

Background

Surface cleaning devices of the prior art are typically used for wet scrubbing cleaning of hard floors or short hair carpets. Such cleaning devices usually have one or more rolling brushes or cleaning discs made of a woollen material. Stubborn soils on the floor can be scrubbed by the addition of water or a water/cleaner mixture.

When the cleaning device is moved over the dirt, the dirt which has been wiped off by the drum brush and dissolved by the water or the water/detergent mixture is sucked up by the cleaning heads arranged in the direction of movement of the drum brush, and in the technique of providing the cleaning tray, the cleaning head may not be provided and the dirt is directly adsorbed by the cleaning material on the cleaning tray.

However, tough soil is generally difficult to clean, and after the soil is scattered on the floor surface, water is evaporated to form hard-to-remove tough soil on the floor surface. Often, not all of this stubborn dirt is removed by the vacuuming operation during scrubbing, leaving some dirt on the floor, reducing the quality of the cleaning.

The cleaning effect of hot water is remarkably effective on hard floors. The reasonable and effective scheme is that the surface cleaning device is cleaned by heating water, the energy loss of the surface cleaning device is reduced by considering the problems of cruising and water continuation of the cleaning device, and the energy loss is transferred to a water storage base station (supply device). Therefore, a water replenishing base station is arranged, a water storage tank is arranged on the base station, water in the water storage tank is heated, and the water is heated to a temperature suitable for cleaning stubborn stains and is kept. The surface cleaning device returns to the base station, is in butt joint with a base station water tank through a water adding joint, realizes automatic water supplement, and then continues to be cleaned by hot water. Or the cleaning action is finished, the surface cleaning device returns to the base station, and if the clean water tank has residual clean water, the residual clean water can be led back to the water storage tank of the base station.

Since the water tank in the base station is often heated to a higher temperature, the detection of the water level in the base station cannot be performed using a conventional water level monitor, which may affect the service life of the water level monitor.

However, the water level of the water tank is a key element for the whole logic of replenishing water and returning water, and the actions of replenishing water and returning water cannot be effectively executed without water level parameters. Therefore, the monitoring of the water level of the water tank, in particular the hot water level, is critical and important.

In order to realize water level detection among the prior art, generally set up three different electrodes of length in the water tank, when three different electrodes of length switched on simultaneously, the water level was the highest, and the water level was well when two less two of length switched on simultaneously, and when three were all not switched on, the water level was low. However, the direct placement of the conductive parts in the tank requires a strict waterproof structure and has a safety hazard.

Disclosure of Invention

To solve at least one of the above technical problems, the present disclosure provides a liquid level detecting device, a supplying device and a surface cleaning system.

The liquid level detection device, the supply device and the surface cleaning system are realized by the following technical scheme.

According to an aspect of the present disclosure, there is provided a liquid level detecting device including:

a float including a float body and a magnetic portion;

a float guide along which the float is movable in a vertical direction based on a change in a liquid level under a buoyancy of the liquid; and the number of the first and second groups,

and the plurality of magnetic signal sensors are arranged along the vertical direction, and when the floater triggers one of the plurality of magnetic signal sensors, the triggered magnetic signal sensor generates a triggering signal.

According to the liquid level detection device of at least one embodiment of the present disclosure, the number of the floats is two or more, the number of the magnetic signal sensors is one more than the number of the floats, the float guide portion is provided with the guide grooves having the same number as the number of the floats, each float moves along each guide groove based on a change in the liquid level under the buoyancy of the liquid, and each magnetic signal sensor can be triggered by only one float.

According to the liquid level detection device of at least one embodiment of the present disclosure, the number of the floats is two or more, the number of the magnetic signal sensors is one more than that of the floats, the float guide portion is provided with the one less limit portion than that of the floats, each float moves along the float guide portion based on the change of the liquid level under the action of the buoyancy of the liquid, two adjacent floats are spaced by one limit portion, and each magnetic signal sensor can be triggered by only one float.

According to the liquid level detection device of at least one embodiment of the present disclosure, the number of the floats is two, that is, an upper float and a lower float, and the number of the magnetic signal sensors is three, that is, an upper sensor, a middle sensor, and a lower sensor, the upper sensor and the middle sensor being capable of being triggered by the upper float, and the lower sensor being capable of being triggered by the lower float.

According to the liquid level detection device of at least one embodiment of the present disclosure, the number of the floats is two, that is, an upper float and a lower float, and the number of the magnetic signal sensors is three, that is, an upper sensor, a middle sensor, and a lower sensor, the upper sensor can be triggered only by the upper float, and the middle sensor and the lower sensor can be triggered by the lower float.

According to the liquid level detection apparatus of at least one embodiment of the present disclosure, the magnetic portion is embedded within the float body.

According to the liquid level detection device of at least one embodiment of the present disclosure, the magnetic signal sensor is a hall sensor or a reed pipe device.

According to the liquid level detection apparatus of at least one embodiment of the present disclosure, the float guide is provided inside the liquid storage tank, and the magnetic signal sensor is provided outside the liquid storage tank.

According to the liquid level detection apparatus of at least one embodiment of the present disclosure, when the upper float is located at the highest position of the upper float, the upper float triggers the upper sensor, the upper sensor generates the first trigger signal, and the middle sensor and the lower sensor do not generate the trigger signal.

According to the liquid level detection device of at least one embodiment of the present disclosure, when the upper float is located between the upper sensor and the middle sensor, the upper float does not trigger the upper sensor, and the upper sensor, the middle sensor, and the lower sensor do not generate a trigger signal.

According to the liquid level detection apparatus of at least one embodiment of the present disclosure, when the upper float is located at the lowest position of the upper float and the lower float is higher than the lowest position of the lower float, the upper float triggers the middle sensor, the middle sensor generates the second trigger signal, and the upper sensor and the lower sensor do not generate the trigger signal.

According to the liquid level detecting device of at least one embodiment of the present disclosure, when the upper float is located at the lowest position of the upper float and the lower float is located at the lowest position of the lower float, the upper float triggers the middle sensor, the middle sensor generates the second trigger signal, the lower float triggers the lower sensor, and the lower sensor generates the third trigger signal.

The liquid level detection device according to at least one embodiment of this disclosure further comprises a processing device, the processing device is connected with the magnetic signal sensor in a communication mode, and the processing device generates corresponding liquid level indication signals based on the trigger state of each magnetic signal sensor.

According to the liquid level detection device of at least one embodiment of the present disclosure, when the upper float is located at the highest position of the upper float, the upper float triggers the upper sensor, the upper sensor generates a first trigger signal, the lower float triggers the middle sensor, the middle sensor generates a second trigger signal, and the lower sensor does not generate a trigger signal.

According to the liquid level detection device of at least one embodiment of the present disclosure, when the upper float is located between the upper sensor and the middle sensor, the upper float does not trigger the upper sensor, the lower float triggers the middle sensor, the middle sensor generates the second trigger signal, and the lower sensor does not generate the trigger signal.

According to the liquid level detecting device of at least one embodiment of the present disclosure, when the upper float is located at the lowest position of the upper float and the lower float is higher than the lowest position of the lower float, the upper float does not trigger the upper sensor, and the lower float does not trigger the middle sensor and the lower sensor.

According to the liquid level detecting device of at least one embodiment of the present disclosure, when the upper float is located at the lowest position of the upper float and the lower float is located at the lowest position of the lower float, the upper float does not trigger the upper sensor, the lower float triggers the lower sensor, and the lower sensor generates the third trigger signal.

The liquid level detection device according to at least one embodiment of this disclosure further comprises a processing device, the processing device is connected with the magnetic signal sensor in a communication mode, and the processing device generates corresponding liquid level indication signals based on the trigger state of each magnetic signal sensor.

According to the liquid level detection device of at least one embodiment of this disclosure, still include the stock tank detection device in place, when the stock tank detection device in place does not produce the stock tank and is in place the signal, processing apparatus does not produce the liquid level and instructs the signal.

According to the liquid level detection device of at least one embodiment of this disclosure, still include the stock tank detection device in place, when the stock tank detection device in place does not produce the stock tank and is in place the signal, processing apparatus does not produce the liquid level and instructs the signal.

According to the liquid level detection device of at least one embodiment of the present disclosure, the liquid tank position detection device is a trigger switch or a photoelectric sensor.

According to the liquid level detection device of at least one embodiment of the present disclosure, at least one of the plurality of magnetic signal sensors is a linear hall sensor that determines whether the liquid storage tank is in place based on a magnetic field strength of the float.

According to the liquid level detection device of at least one embodiment of the present disclosure, at least one of the plurality of magnetic signal sensors is a linear hall sensor that determines whether the liquid storage tank is in place based on a magnetic field strength of the float.

According to the liquid level detection device of at least one embodiment of the present disclosure, when the liquid storage tank is not in place, the processing device does not generate a liquid level indication signal.

According to another aspect of the present disclosure, there is provided a supply device including:

a liquid storage tank for storing a cleaning liquid; and the number of the first and second groups,

the liquid level detection device according to any one of the above claims, wherein the liquid level detection device detects a liquid level of the cleaning liquid in the liquid tank.

According to yet another aspect of the present disclosure, there is provided a surface cleaning system comprising:

the above-mentioned supply device; and the number of the first and second groups,

a cleaning device capable of being supplied with a cleaning liquid by the supply means.

According to the surface cleaning system of at least one embodiment of the present disclosure, the supply device further recovers the remaining liquid in the cleaning apparatus.

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 one of schematic structural views of a supply device according to one embodiment of the present disclosure.

Fig. 2 is a second schematic structural view of a supply device according to an embodiment of the present disclosure.

Fig. 3 is a third schematic structural view of a supply device according to an embodiment of the present disclosure.

Fig. 4 is a fourth schematic structural view of a supply device according to an embodiment of the present disclosure.

Fig. 5 is a fifth schematic structural view of a supply device according to an embodiment of the present disclosure.

Fig. 6 is a sixth schematic structural view of a supply device according to an embodiment of the present disclosure.

Fig. 7 to 10 are schematic views of a liquid level detection apparatus according to an embodiment of the present disclosure when detecting liquid levels of liquid tanks having different liquid levels.

FIG. 11 is a schematic illustration of a reservoir when not in place, according to one embodiment of the present disclosure.

FIG. 12 is an exploded view of a liquid level detection device and a liquid storage tank according to one embodiment of the present disclosure.

Description of the reference numerals

10 liquid level detection device

11 float

12 float guide

13 magnetic signal sensor

16 support part

100 supply device

101 base

102 tray part

103 storage box

104 joint part

105 joint partition

106 heating device

111 float body

112 magnetic part

121 guide groove

122 position limiting part

151 liquid storage tank

152 liquid storage tank lower end cover

153 liquid storage tank valve assembly

1011 base air outlet

1012 base air inlet

1021 main rolling wheel positioning seat

1022 auxiliary rolling wheel positioning seat

1023 draining tank

1024 tray air outlet

1071 first pipeline

1072 second line

1511 liquid filling part of liquid storage tank

1512 a handle.

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. 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 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 "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, electrically, etc., and may or may not have intermediate 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". Further, 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 one of schematic structural views of a supply device according to one embodiment of the present disclosure. Fig. 2 is a second schematic structural view of a supply device according to an embodiment of the present disclosure. Fig. 3 is a third schematic structural view of a supply device according to an embodiment of the present disclosure. Fig. 4 is a fourth schematic structural view of a supply device according to an embodiment of the present disclosure. Fig. 5 is a fifth schematic structural view of a supply device according to an embodiment of the present disclosure. Fig. 6 is a sixth schematic structural view of a supply device according to an embodiment of the present disclosure. Fig. 7 to 10 are schematic views of a liquid level detection apparatus according to an embodiment of the present disclosure when detecting liquid levels of liquid tanks having different liquid levels. FIG. 11 is a schematic illustration of a reservoir when not in place, according to one embodiment of the present disclosure. FIG. 12 is an exploded view of a liquid level detection device and a liquid storage tank according to one embodiment of the present disclosure.

The liquid level detection apparatus of the present disclosure will be described in detail with reference to fig. 7 to 12.

According to an embodiment of the present disclosure, the liquid level detection apparatus 10 includes:

a float 11, the float 11 including a float body 111 and a magnetic portion 112;

a float guide 12 along which the float 11 is movable in a vertical direction based on a change in liquid level by a buoyancy of the liquid; and the number of the first and second groups,

a plurality of magnetic signal sensors 13, the plurality of magnetic signal sensors 13 being disposed in a vertical direction, when the float 11 triggers one of the plurality of magnetic signal sensors 13, the triggered magnetic signal sensor 13 generates a trigger signal.

As shown in fig. 7 to 12, the float 11 is disposed inside the tank 151, a plurality of magnetic signal sensors 13 are disposed outside the tank 151 in a vertical direction, the plurality of magnetic signal sensors 13 are disposed at a plurality of different liquid levels, and when a certain magnetic signal sensor 13 is activated (facing or entering a predetermined distance), the magnetic signal sensor 13 generates a trigger signal, which is generally an electric signal, the trigger signal may indicate the current liquid level, and for the accuracy of the liquid level measurement, three or more magnetic signal sensors 13 may be provided, and the float 11 may be only one.

The float guide 12 may be a guide frame structure, and the float guide 12 may have a guide groove 121 (or a guide rail) formed therein.

Wherein the magnetic part 112 may be a permanent magnet or a magnet, and the float body 111 may be made of a low-density material.

According to a preferred embodiment of the present disclosure, the number of the floats 11 of the liquid level detecting device 10 is two or more, the number of the magnetic signal sensors 13 is one more than the number of the floats 11, the float guide 12 is provided with the same number of guide grooves 121 as the number of the floats 11, the respective floats 11 move along the respective guide grooves 121 based on a change in the liquid level by buoyancy of the liquid, and each magnetic signal sensor 13 can be triggered by only one float.

In the present embodiment, referring to fig. 7, 8, 9, and 10, each magnetic signal sensor 13 can be directly opposed to only one float 11, that is, can be triggered by only one float 11, as shown in fig. 7, the upper float can trigger the upper sensor and the middle sensor based on the change of the liquid level, and the lower float can trigger only the lower sensor ]

Alternatively, it may be provided that the upper float is able to trigger the upper sensor based on a change in the liquid level and the lower float is able to trigger the middle sensor and the lower sensor.

In the present embodiment, the moving range of each float 11 can be defined by the respective guide grooves 121.

According to still another preferred embodiment of the present disclosure, the number of the floats 11 of the liquid level detecting device 10 is two or more, the number of the magnetic signal sensors 13 is one more than the number of the floats 11, the float guide 12 is provided with one less limit portion 122 than the number of the floats 11, each float 11 moves along the float guide 12 based on a change in the liquid level by the buoyancy of the liquid, adjacent two floats 11 are spaced by one limit portion 122, and each magnetic signal sensor 13 can be triggered by only one float 11.

In this embodiment, the float guide portion 12 has a cavity, each float 11 is disposed in the cavity of the float guide portion 12, and two adjacent floats 11 are separated by one limiting portion 122.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that the number of the floats 11 is two, that is, the upper float and the lower float, and the number of the magnetic signal sensors 13 is three, that is, the upper sensor, the middle sensor, and the lower sensor, the upper sensor and the middle sensor being capable of being triggered by the upper float, and the lower sensor being capable of being triggered by the lower float.

Preferably, as shown in fig. 7 to 10, the upper float moves between the upper sensor and the middle sensor, the upper float can trigger the upper sensor or the middle sensor based on a change in the liquid level, and when the upper float is located between the upper sensor and the middle sensor, the upper sensor is not triggered and the middle sensor is not triggered, and the lower float can only trigger the lower sensor based on a change in the liquid level.

According to an alternative preferred embodiment of the present disclosure, the number of floats 11 of the liquid level detection device 10 is two, i.e., an upper float and a lower float, and the number of magnetic signal sensors 13 is three, i.e., an upper sensor, a middle sensor, and a lower sensor, the upper sensor being capable of being triggered only by the upper float, the middle sensor and the lower sensor being capable of being triggered by the lower float.

In this embodiment, the upper float moves between the upper sensor and the middle sensor, the upper float can only trigger the upper sensor based on the change of the liquid level, and when the upper float is located between the upper sensor and the middle sensor, the upper sensor is not triggered, the middle sensor is not triggered, and the lower float can trigger the middle sensor or the lower sensor based on the change of the liquid level.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that the magnetic portion 112 is embedded within the float body 111.

With the liquid level detection device 10 of each of the above embodiments, the magnetic signal sensor 13 may be a hall sensor or a reed pipe device.

With the liquid level detection device 10 of each of the above embodiments, the float guide 12 is provided inside the tank 151, and the magnetic signal sensor 13 is provided outside the tank.

Wherein the float guide 12 may be fixed on an inner wall of the tank 151, and the magnetic signal sensor 13 may be fixed on an outer wall of the tank 151 or on the support portion 16 adjacent to the tank 151.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that when the upper float is located at the highest position of the upper float, the upper float triggers the upper sensor, the upper sensor generates the first trigger signal, and the middle sensor and the lower sensor do not generate the trigger signals.

At this time, the lower float is located at the highest position of the lower float, and the lower float does not trigger the middle sensor and the lower sensor.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that when the upper float is positioned between the upper sensor and the middle sensor, the upper float does not trigger the upper sensor, and the upper sensor, the middle sensor, and the lower sensor do not generate a trigger signal.

At this time, the lower float is located at the highest position of the lower float, and the lower float does not trigger the middle sensor and the lower sensor.

In the liquid level detection device 10 according to each of the above embodiments, it is preferable that the upper float triggers the middle sensor, the middle sensor generates the second trigger signal, and the upper sensor and the lower sensor do not generate the trigger signal when the upper float is located at the lowest position of the upper float and the lower float is higher than the lowest position of the lower float.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that when the upper float is located at the lowest position of the upper float and the lower float is located at the lowest position of the lower float, the upper float triggers the middle sensor, the middle sensor generates the second trigger signal, the lower float triggers the lower sensor, and the lower sensor generates the third trigger signal.

The first, second, and third trigger signals described above are merely to distinguish between trigger signals generated by three different sensors.

For the liquid level detection device 10 of each of the above embodiments, it is preferable that the liquid level detection device further includes a processing device, the processing device is connected in communication with the magnetic signal sensors 13, and the processing device generates corresponding liquid level indicating signals based on the triggering states of the respective magnetic signal sensors 13.

For example, when the upper sensor generates a first trigger signal and the middle and lower sensors do not generate trigger signals, the processing device generates a first level indicator signal, which may indicate that the tank 151 is at a full liquid level, as shown in FIG. 7.

When the upper sensor, the middle sensor and the lower sensor do not generate the trigger signal, the processing device generates a second liquid level indicating signal, and the second liquid level indicating signal can indicate that the liquid level of the liquid storage tank 151 is below the full liquid level and above the middle sensor (the position of the middle sensor can be set as a reminding liquid level), as shown in fig. 8.

The middle sensor generates a second trigger signal, and the upper sensor and the lower sensor do not generate a trigger signal, the processing device generates a third liquid level indicating signal, which may indicate that the liquid level of the liquid storage tank 151 is below the reminder liquid level and above the lowest liquid level, as shown in fig. 9.

The middle sensor generates a second trigger signal and the lower sensor generates a third trigger signal, the processing means generates a fourth level indicating signal indicating that the liquid level of the liquid storage tank 151 is at the lowest liquid level, as shown in fig. 10.

With the liquid level detection device 10 of each of the above embodiments, preferably, when the upper float is located at the highest position of the upper float, the upper float triggers the upper sensor, the upper sensor generates the first trigger signal, the lower float triggers the middle sensor, the middle sensor generates the second trigger signal, and the lower sensor does not generate the trigger signal.

At this time, the lower float is located at the highest position of the lower float, and the lower float triggers the middle sensor.

With the liquid level detection apparatus 10 of each of the above embodiments, it is preferable that when the upper float is located between the upper sensor and the middle sensor, the upper float does not trigger the upper sensor, the lower float triggers the middle sensor, the middle sensor generates the second trigger signal, and the lower sensor does not generate the trigger signal.

At this time, the lower float is located at the highest position of the lower float, and the lower float does not trigger the lower sensor.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that the upper float does not trigger the upper sensor and the lower float does not trigger the middle sensor and the lower sensor when the upper float is located at the lowest position of the upper float and the lower float is higher than the lowest position of the lower float.

With the liquid level detection device 10 of each of the above embodiments, it is preferable that when the upper float is located at the lowest position of the upper float and the lower float is located at the lowest position of the lower float, the upper float does not trigger the upper sensor, the lower float triggers the lower sensor, and the lower sensor generates the third trigger signal.

For the liquid level detection device 10 of each of the above embodiments, it is preferable that the liquid level detection device further includes a processing device, the processing device is connected in communication with the magnetic signal sensors 13, and the processing device generates corresponding liquid level indicating signals based on the triggering states of the respective magnetic signal sensors 13.

For example, the upper sensor generates a first trigger signal, the middle sensor generates a second trigger signal, and the processing device generates a first level indicator signal when the lower sensor does not generate a trigger signal, which may indicate that the tank 151 is at a full liquid level.

The upper sensor does not generate the first trigger signal, the middle sensor generates the second trigger signal, and the processing device generates the second level indicating signal when the lower sensor does not generate the trigger signal, which may indicate that the liquid level of the reservoir 151 is below the full liquid level and above the middle sensor (the middle sensor position may be set as a reminder level).

When the upper sensor, the middle sensor and the lower sensor do not generate the trigger signal, the processing device generates a third liquid level indicating signal, and the third liquid level indicating signal can indicate that the liquid level of the liquid storage tank 151 is below the reminding liquid level and above the lowest liquid level.

The upper sensor does not generate a trigger signal, the middle sensor does not generate a trigger signal, and the lower sensor generates a third trigger signal, the processing device generates a fourth liquid level indicating signal indicating that the liquid level of the liquid storage tank 151 is at the lowest liquid level.

With respect to the liquid level detecting device 10 of each of the above embodiments, the processing device further includes a communication module, and the processing device can transmit the above-described liquid level indicating signal to a terminal device, such as a mobile terminal device like a mobile phone or a desktop computer device.

For the liquid level detection device 10 of each of the above embodiments, it is preferable that the liquid level detection device further comprises a liquid level on-position detection device, and the processing device does not generate a liquid level indication signal when the liquid level on-position detection device does not generate a liquid level on-position signal (as shown in fig. 11, the liquid tank 151 is not on position, the liquid tank on-position detection device does not generate a liquid tank on-position signal, and the processing device does not generate a liquid level indication signal).

The tank presence detection means may be provided at a suitable location of the supply device 100, for example on the support 16.

The support 16 may have a cavity structure and/or a support frame structure.

The liquid storage tank on-line detection device can be a trigger switch or a photoelectric sensor.

The liquid storage tank on-site detection device may also be other types of detection devices, and when the liquid storage tank 151 is in place, the liquid storage tank on-site detection device generates an on-site signal/trigger signal, and when the liquid storage tank 151 is not in place, the liquid storage tank on-site detection device does not generate an on-site signal/trigger signal.

According to a preferred embodiment of the present disclosure, the liquid tank presence detecting device of the above-described embodiment is not separately provided, but at least one of the plurality of magnetic signal sensors is provided as a linear hall sensor that determines whether the liquid tank 151 is present based on the magnetic field strength of the float 11.

With the liquid level detection apparatus 10 of the above embodiment, when the liquid tank 151 is not in place, the processing apparatus does not generate a liquid level indicating signal.

According to another aspect of the present disclosure, there is provided a supply device 100, including:

a liquid storage tank 151, the liquid storage tank 151 storing a cleaning liquid; and the number of the first and second groups,

in the liquid level detection apparatus 10 according to any of the above embodiments, the liquid level detection apparatus 10 detects the liquid level of the cleaning liquid in the tank 151.

Fig. 1 to 6 are schematic views of a supply device 100 according to an embodiment of the present disclosure from different perspectives and with different partial structures.

As shown in fig. 1 to 6, the supplying device 100 includes a base 101, the base 101 may be a cavity structure, the base 101 may be provided with a tray part 102, the tray part 102 may be provided with two main roller positioning seats 1021 and two auxiliary roller positioning seats 1022, one skilled in the art may adjust the number and structure of the main roller positioning seats 1021 and the number and structure of the auxiliary roller positioning seats 1022 based on the specific roller form of the cleaning apparatus, and for the cleaning apparatus without the auxiliary roller, the supplying device 100 may adaptively have only the main roller positioning seats 1021.

The tray portion 102 of the supplying apparatus 100 is preferably further formed with a draining groove 1023, and the shape of the draining groove 1023 can be matched with the shape of a rolling brush of a cleaning device and the like, and the rolling brush of the cleaning device can be placed in the draining groove 1023 when the cleaning device is docked to the supplying apparatus 100.

Preferably, the tray portion 102 is detachably connected to the base 101.

According to the preferred embodiment of the present disclosure, the base 101 of the supply device 100 is a cavity structure, an air supply device (which may have a heating component to provide hot air) is disposed in the cavity structure of the base 101, a base air outlet 1011 and a base air inlet 1012 are formed on the base 101, and accordingly, a tray air outlet 1024 is disposed on the tray portion 102 corresponding to the base air outlet 1011, so that air flow output by the air supply device can be applied to components such as a rolling brush of a cleaning device disposed in the draining tank 1023 through the base air outlet 1011 and the tray air outlet 1024 to dry the components such as the rolling brush.

The base air inlet 1012 may be provided at a suitable portion of the base 101, and the number thereof may be one or two or more. The base intake 1012 may be porous.

The base 101 may be generally square in shape, or may be other suitable shapes.

As shown in fig. 1 to 6, the supply device 100 has a support portion 16, the support portion 16 is fixedly connected to one end of the base 101, and the support portion 16 has an extension in a vertical direction.

The supply apparatus 100 may further be provided with a storage box 103, both the storage box 103 and the reservoir 151 being supported and held by the support portion 16, and the storage box 103 may have a door that can be opened.

In fig. 1 to 6, the storage box 103 and the liquid storage tank 151 are both cylindrical structures, and those skilled in the art may adjust the shapes of the storage box 103 and the liquid storage tank 151.

The top of liquid reserve tank 151 can set up liquid reserve tank liquid feeding portion 1511, and liquid reserve tank liquid feeding portion 1511 can be the form of liquid feeding lid cooperation filling opening.

The liquid storage tank 151 may further be provided with a handle 1512, and the liquid storage tank 151 is detachably connected to the support portion 16.

Preferably, the supply device 100 further has a connector portion 104, the connector portion 104 including a charging/communication connector and a liquid connector, and the supply device 100 further has a connector partition 105, the connector partition 105 partitioning the charging/communication connector and the liquid connector.

Through the charging/communication connector, the supply device 100 can charge the cleaning device and perform data interaction or signal interaction with the cleaning device.

The supply device 100 can add liquid to the cleaning apparatus or recover residual liquid of the cleaning apparatus through the liquid joint.

Preferably, the supplying device 100 further has a bidirectional pump device, a first pipeline 1071, a second pipeline 1072 and a heating device 106, the bidirectional pump device is connected between the tank valve assembly 153 and the first end of the first pipeline 1071, the second end of the first pipeline 1071 is connected with the heating device 106, the heating device 106 is connected between the second end of the first pipeline 1071 and the first end of the second pipeline 1072, the second end of the second pipeline 1072 is connected with the liquid joint, so that the liquid in the tank 151 is supplied to the cleaning apparatus through the tank valve assembly 153, the bidirectional pump device, the first pipeline 1071, the heating device 106, the second pipeline 1072 and the liquid joint in sequence.

Preferably, the reservoir 151 is disposed on the support portion 16 through a reservoir lower end cap 152, and a reservoir valve assembly 153 is disposed in the reservoir lower end cap 152. The tank 151 is removable from the tank bottom end cap 152 as shown in fig. 11.

A surface cleaning system according to one embodiment of the present disclosure includes:

the supply device 100 of any of the above embodiments; and the number of the first and second groups,

a cleaning device capable of being supplied with a cleaning liquid by the supply apparatus 100. The supply device 100 may charge the cleaning apparatus or interact with the cleaning apparatus in data/signals.

The supply device 100 also recovers the remaining liquid in the cleaning apparatus.

The cleaning apparatus may be various cleaning apparatuses in the related art, such as a scrubber, a wet cleaner, etc., and the present disclosure is not particularly limited to the type of the cleaning apparatus.

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.