CN220141399U - Table type water purifier - Google Patents

Abstract

The utility model discloses a desk type water purifier, which comprises a machine body, wherein one side of the machine body is provided with a water outlet seat for placing a water kettle, the water outlet seat is provided with a water inlet and a water outlet which are communicated with the water kettle, and the desk type water purifier further comprises: the low liquid level water storage device is arranged in the machine body and is communicated with the water inlet; the photoelectric liquid level detection unit is used for detecting the water level in the low liquid level water reservoir and comprises an optical element and a photoelectric sensor, the optical element is arranged in the low liquid level water reservoir, an optical signal sent by the photoelectric sensor can penetrate through the side wall of the low liquid level water reservoir and is projected on the optical element, and the optical signal can be reflected to the receiving end of the photoelectric sensor by the optical element. The liquid level in the low liquid level water receiver is consistent with the liquid level in the water kettle, and the photoelectric liquid level detection unit can detect the water level in the low liquid level water receiver to realize the monitoring of the water level in the water kettle, so that dry pumping and air injection are avoided.

Description

Table type water purifier

Technical Field

The utility model belongs to the technical field of drinking equipment, and particularly relates to a desk type water purifier.

Background

The household water purifier is also called a water purifying and quick heating drinking water integrated machine, and is usually pure water preparation equipment integrating a filter element and a quick heating device, and is used for purifying, filtering and heating raw water and providing cold and hot drinking water so as to meet daily needs of people. The water purifier generally comprises a machine body, a water outlet seat, a water kettle arranged on the water outlet seat and a water suction pump arranged on the machine body for sucking water in the water kettle.

In the prior art, a photoelectric sensing piece is generally adopted to monitor the water level in the kettle, the photoelectric sensing piece comprises a triangular prism and a photoelectric sensing chip, the triangular prism is arranged at the bottom of the inner side of the kettle, when the water level in the kettle is lower than a preset water level, light is refracted through the triangular prism to enable the photoelectric sensing chip to collect a liquid level signal, and the water suction pump stops pumping water. However, if the machine body is in an uneven state, and if the kettle is not placed on an uneven table top, the kettle is inclined, so that the photoelectric sensing part senses untimely, the water suction pump still pumps water when the liquid level in the kettle is lower than the set water level, and even if the water is discharged, dry pumping air is formed, so that the user experience is reduced.

Disclosure of Invention

The utility model provides a desk type water purifier for solving the problem of inaccurate detection of the water level in a kettle.

The technical scheme adopted by the utility model is as follows:

the utility model provides a desk-top purifier, includes the fuselage, one side of fuselage is equipped with the play water seat that is used for laying the kettle, go out water seat be equipped with water inlet and the delivery port of kettle intercommunication still includes: the low liquid level water receiver is arranged in the machine body and is communicated with the water inlet; the photoelectric liquid level detection unit is used for detecting the water level in the low liquid level water reservoir and comprises an optical element and a photoelectric sensor, wherein the optical element is arranged in the low liquid level water reservoir, the photoelectric sensor is arranged on the outer side of the low liquid level water reservoir, an optical signal sent by the photoelectric sensor can penetrate through the side wall of the low liquid level water reservoir and is projected onto the optical element, and the optical signal can be reflected to the receiving end of the photoelectric sensor by the optical element.

The desktop water purifier provided by the utility model has the following additional technical characteristics:

the low liquid level reservoir comprises a liquid inlet and a liquid outlet, and the optical element is arranged adjacent to the liquid inlet; the optical element is a refractive lens, the refractive lens comprises a first reflecting mirror surface and a second reflecting mirror surface, and the first reflecting mirror surface and the second reflecting mirror surface are respectively attached to the inner side wall of the low-liquid-level water reservoir.

The side wall of the low liquid level water reservoir and the optical element are made of transparent materials, and an optical signal sent by the photoelectric sensor is projected to the optical element through the side wall of the low liquid level water reservoir; or,

the side wall of the low liquid level water reservoir is provided with a window opposite to the optical element, and an optical signal sent by the photoelectric sensor is projected to the optical element through the window.

The side wall of the low liquid level water reservoir and the optical element are of an integrally formed structure, and the photoelectric sensor is arranged on one side of the low liquid level water reservoir and opposite to the optical element in position.

The low liquid level water receiver comprises a liquid inlet and a liquid outlet, the height difference between the top of the low liquid level water receiver and the bottom end surface of the water storage cavity of the kettle is H, and the H satisfies: h is more than or equal to 20mm and less than or equal to 30mm.

The low liquid level water receiver comprises a base and an upper cover covered on the base, the base and the upper cover are matched to form a liquid storage cavity, the base is provided with a liquid inlet, the upper cover is provided with a liquid outlet, the optical element is arranged on the base, and the photoelectric sensor is detachably arranged on the outer side of the base.

One side of the base is provided with a positioning column for installing the photoelectric sensor, the outer side of the photoelectric sensor is sleeved with a positioning bracket, and the positioning bracket is connected with the positioning column through a fastener.

The base extends upwards to wrap at least part of the area of the upper cover, the base is provided with a bearing step, and the upper cover is carried at the bearing step; and a sealing piece is sleeved on the inner side of the base and/or the outer side of the upper cover so as to radially seal the liquid storage cavity.

One of the base and the machine body is provided with a buckling position, the other one of the base and the machine body is provided with a clamping tongue matched with the buckling position, and the base is detachably arranged on the machine body through the clamping fit of the buckling position and the clamping tongue.

The desk-top water purifier still includes high liquid level water receiver and is used for detecting the water level detection element of the interior water level of high liquid level water receiver, high liquid level water receiver is located the top of low liquid level water receiver.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. the low-liquid-level water storage device communicated with the water kettle is arranged in the desk type water purifier, the water kettle and the low-liquid-level water storage device form a communicating vessel, and the optical element is arranged in the low-liquid-level water storage device, so that the water level detection in the low-liquid-level water storage device is not influenced by the inclination of the machine body and/or the water kettle, namely, the liquid level in the low-liquid-level water storage device is always consistent with the liquid level in the water kettle no matter the machine body and/or the water kettle inclines, and the photoelectric liquid level detection unit can realize the monitoring of the water level in the water kettle by detecting the water level in the low-liquid-level water storage device, thereby avoiding the phenomena of dry pumping and air injection caused by untimely induction.

In addition, because the photoelectric liquid level detection unit is arranged inside the machine body, the interference influence of signals such as external light and the like on the photoelectric liquid level detection unit can be effectively reduced, the stability of the detection environment is improved, and the detection precision is improved.

Moreover, compared with the mode of arranging the photoelectric detection part on the kettle base in the prior art, the photoelectric liquid level detection unit is arranged in the machine body, so that the exposure of the photoelectric sensor is avoided, the use look and feel of a user are improved, the photoelectric sensor is prevented from being influenced by water leakage of the kettle, other external water flows, impurities and the like, and the use safety and the pureness of the use environment of the photoelectric liquid level detection unit are improved.

2. As a preferred embodiment of the utility model, the low level reservoir comprises a liquid inlet and a liquid outlet, the optical element being arranged adjacent to the liquid inlet; the optical element is a refractive lens, and the refractive lens comprises a first reflecting mirror surface and a second reflecting mirror surface, and the first reflecting mirror surface and the second reflecting mirror surface are respectively attached to the inner side wall of the low-liquid-level water reservoir. The optical element is arranged adjacent to the liquid inlet, so that when the water level in the low-level water reservoir is higher, the optical element can be immersed in water to change the refraction angle of the optical element, an optical signal emitted by the photoelectric sensor is scattered through the optical element, and the receiving end of the photoelectric sensor can only obtain a diffusely reflected weak optical signal, so that the photoelectric sensor outputs a low-voltage signal. When the water level in the low-level water reservoir is lower than the optical element, the optical element returns to a normal refraction angle, an optical signal sent by the photoelectric sensor is reflected by the optical element and is obtained by the receiving end, and the photoelectric sensor outputs a high-voltage signal. The liquid level state in the low liquid level water reservoir can be accurately identified according to the conversion of the high and low voltage signals of the photoelectric sensor, so that whether the low liquid level water reservoir is at the low water level or not can be accurately and timely judged, and the water level state in the kettle can be reflected.

Further, the side wall of the low-level water reservoir and the optical element can be made of transparent materials, or the side wall of the low-level water reservoir is provided with a window opposite to the optical element, and the transparent materials or the light-transmitting window can be used for avoiding the low-level water reservoir from shielding the transmission of optical signals, so that the stable transmission of the optical signals is ensured.

Further, the side wall of the low liquid level water reservoir and the optical element are in an integrated structure, and the photoelectric sensor is arranged on one side of the low liquid level water reservoir and opposite to the optical element. Because the photoelectric liquid level detection unit needs to rely on the projection propagation of the optical element to the optical signal, the projection angle of the optical element installation directly relates to the detection precision of the photoelectric liquid level detection unit, so that higher requirements are put on the installation position precision of the optical element, the side wall of the low liquid level water reservoir and the optical element are integrally formed, on one hand, the assembly process is simplified, and the low assembly efficiency caused by the fact that the assembly personnel need to accurately align the installation position of the optical element is avoided; on the other hand, the side wall of the low-liquid-level water receiver and the optical element are integrally formed, so that the installation precision of the optical element can be improved, and the problem of detection precision caused by manual errors is avoided; in addition, the side wall of the low-liquid-level water receiver and the optical element are integrally formed, so that the influence on the transmission of optical signals caused by auxiliary materials such as auxiliary components or glue required by assembly when the split forming is carried out and then the assembly is carried out can be avoided.

3. As a preferred embodiment of the utility model, the low level water reservoir comprises a liquid inlet and a liquid outlet, the height difference between the top of the low level water reservoir and the bottom end surface of the water storage cavity of the kettle is H, and H satisfies: h is more than or equal to 20mm and less than or equal to 30mm. The height difference H between the top of the low-liquid-level water storage device and the bottom end surface of the water storage cavity of the water kettle is arranged in the range, so that a placing space is provided for the optical element, excessive water quantity cannot remain in the water kettle when the photoelectric liquid level detection unit normally works, the space utilization rate of the water kettle is improved, and the risks that the water pump pumps water insufficiently and pumps water out through the heating unit can be avoided due to too little residual water caused by too low size.

4. As a preferred embodiment of the utility model, the low liquid level water receiver comprises a base and an upper cover covered on the base, the base and the upper cover are matched to form a liquid storage cavity, the base is provided with a liquid inlet, the upper cover is provided with a liquid outlet, the optical element is arranged on the base, and the photoelectric sensor is detachably arranged on the outer side of the base. The optical element is arranged on the base, so that the connection stability of the optical element and the machine body can be improved, the possibility of displacement of the optical element caused by machine body shaking and the like is reduced, and the guarantee is provided for the stable reflection of an optical signal by the optical element; in addition, the photoelectric sensor is detachably arranged on the outer side of the base, so that the photoelectric sensor is convenient to mount, overhaul and replace after the photoelectric sensor is dismounted, and the maintenance cost is reduced.

Further, a positioning column of the photoelectric sensor for installation is arranged on one side of the base, a positioning bracket is sleeved on the outer side of the photoelectric sensor, and the positioning bracket is connected with the positioning column through a fastener. The positioning column provides an installation position for the photoelectric sensor on one hand, and can provide a prompting function for an assembler to acquire the installation position of the photoelectric sensor on the other hand, so that the assembly difficulty is reduced; in addition, the locating support passes through fastener close fit with the reference column, has promoted the steadiness of photoelectric sensor installation, provides the guarantee for photoelectric sensor's normal work.

5. As a preferred embodiment of the present utility model, the base extends upward to wrap at least a part of the area of the upper cover, the base is provided with a bearing step, and the upper cover is mounted at the bearing step; and a sealing piece is sleeved on the inner side of the base and/or the outer side of the upper cover so as to radially seal the liquid storage cavity. At least partial area of the base forms a package on the upper cover, and the sealing piece matched with the inner side of the base and/or the outer side of the upper cover can effectively seal the liquid storage cavity, so that liquid is prevented from flowing out from a gap between the upper cover and the base, and the detection precision is improved.

Further, one of the base and the machine body is provided with a buckling position, the other one of the base and the machine body is provided with a clamping tongue matched with the buckling position, and the base is detachably arranged on the machine body through the clamping fit of the buckling position and the clamping tongue. The base is detachably connected with the machine body through the cooperation of the clamping tongue and the buckling position, so that the assembly difficulty of the base is reduced, and the base is convenient to disassemble and overhaul.

6. As a preferred embodiment of the utility model, the bench-type water purifier further comprises a high-level water reservoir and a water level detection element for detecting the water level in the high-level water reservoir, wherein the high-level water reservoir is positioned above the low-level water reservoir. The high liquid level water receiver is matched with the water level detection element positioned in the high liquid level water receiver to be used for detecting the upper limit of the water level in the water kettle, the liquid level in the high liquid level water receiver is consistent with the liquid level in the water kettle, the water level detection element can monitor the water level in the water kettle by detecting the water level in the low liquid level water receiver, and water overflow caused by excessive water supplement in the water kettle due to untimely induction is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a water purifier according to an embodiment of the present utility model;

fig. 2 is an enlarged view of a portion a of fig. 1;

FIG. 3 is a cross-sectional view of a water purifier according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a part of components of a water purifier according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a part of a water purifier according to an embodiment of the present utility model.

Wherein:

1, a machine body;

2, a water outlet seat;

3 a low liquid level water receiver, 301 a side wall, 302 a liquid inlet, 303 an upper cover, 304 a base and 3041 bearing steps;

4 photoelectric liquid level detection unit, 401 optical element, 402 photoelectric sensor;

5 a liquid storage cavity;

6, positioning columns;

7, positioning a bracket;

8, buckling positions;

9 kettles.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below. It should be noted that, without conflict, embodiments of the present utility model and features in each embodiment may be combined with each other.

In addition, in the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "top", "bottom", "inner", "outer", "radial", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 and 2, a desk-top water purifier includes a main body 1, one side of the main body 1 is provided with a water outlet seat 2 for placing a water kettle 9, the water outlet seat 2 is provided with a water inlet and a water outlet communicated with the water kettle 9, and the desk-top water purifier further includes: the low liquid level water receiver 3 is arranged in the machine body 1 and is communicated with the water inlet; the photoelectric liquid level detection unit 4 is configured to detect a water level in the low liquid level reservoir 3, the photoelectric liquid level detection unit 4 includes an optical element 401 and a photoelectric sensor 402, the optical element 401 is disposed in the low liquid level reservoir 3, the photoelectric sensor 402 is disposed outside the low liquid level reservoir 3, an optical signal emitted by the photoelectric sensor 402 can penetrate through a sidewall 301 of the low liquid level reservoir 3 and be projected onto the optical element 401, and the optical signal can be reflected by the optical element 401 to a receiving end of the photoelectric sensor 402.

According to the utility model, the water outlet of the water outlet seat 2 is communicated with the water kettle 9 to supply water into the water kettle 9, when water is required to be taken, the water suction pump is operated, the water in the water kettle 9 is communicated with the water suction pump through the water inlet of the water outlet seat 2 to supply water to a tap of the water purifier, and the low-liquid-level water receiver 3 is arranged on a water outlet path of the water kettle 9 and is matched with the photoelectric liquid level detection unit 4 to detect the liquid level in the water kettle 9 in real time.

The low-liquid-level water storage device 3 communicated with the water kettle is arranged in the desk type water purifier, the water kettle and the low-liquid-level water storage device form a communicating vessel, the optical element 401 is arranged in the low-liquid-level water storage device 3, so that the water level detection in the low-liquid-level water storage device 3 is not affected by the inclination of the machine body 1 and/or the water kettle 9, namely, no matter the inclination of the machine body 1 and/or the water kettle 9 occurs, the liquid level in the low-liquid-level water storage device 3 is always consistent with the liquid level in the water kettle 9, and the photoelectric liquid level detection unit 4 can realize the monitoring of the water level in the water kettle 9 by detecting the water level in the low-liquid-level water storage device 3, thereby avoiding the phenomena of dry pumping and air injection caused by untimely induction. In addition, because the photoelectric liquid level detection unit 4 is arranged inside the machine body 1, the interference influence of signals such as external light and the like on the photoelectric liquid level detection unit 4 can be effectively reduced, the stability of the detection environment is improved, and the detection precision is improved. Moreover, compared with the mode of arranging the photoelectric detection part on the base 304 of the kettle 9 in the prior art, the photoelectric liquid level detection unit 4 is arranged in the machine body 1, so that the exposure of the photoelectric sensor 402 is avoided, the use look and feel of a user are improved, the photoelectric sensor 402 is prevented from being influenced by water leakage of the kettle 9, other water flows and impurities outside and the like, and the use safety and the pureness of the use environment of the photoelectric liquid level detection unit 4 are improved.

Specifically, the optical element 401 may reflect and refract the optical signal, and when the optical element 401 has a fixed refractive index, and when the optical element 401 has water or no water in the kettle 9, the immersion and exposure states of the optical element 401 cause the refractive index of the optical element 401 to change, so that the optical signal intensity obtained by the receiving end of the photoelectric sensor 402 is different, and thus the photoelectric detection unit 4 determines whether the liquid level in the kettle 9 is lower than the set height.

As a preferred embodiment of the present utility model, as shown in fig. 1 and 2, the low level reservoir 3 includes a liquid inlet 302 and a liquid outlet, and the optical element 401 is disposed adjacent to the liquid inlet 302; the optical element 401 is a refractive lens comprising a first mirror surface and a second mirror surface, both of which are attached to the inner sidewall 301 of the low level reservoir 3. The optical element 401 is arranged adjacent to the liquid inlet, so that when the water level in the low-level water reservoir 3 is high, the optical element 401 can be immersed in water to change the refraction angle of the optical element 401, an optical signal emitted by the photoelectric sensor 402 is scattered through the optical element 401, and the receiving end of the photoelectric sensor 402 can only obtain a diffusely reflected weak optical signal, so that the photoelectric sensor 402 outputs a low-voltage signal. When the water level in the low-level reservoir 3 is lower than the optical element 401, the optical element 401 returns to a normal refraction angle, an optical signal emitted by the photoelectric sensor 402 is obtained by the reflection of the optical element 401 and is received by the receiving end, and the photoelectric sensor 402 outputs a high-voltage signal. The liquid level state in the low liquid level water reservoir 3 can be accurately identified according to the conversion of the high and low voltage signals of the photoelectric sensor 402, so as to accurately and timely judge whether the low liquid level water reservoir 3 is at the low water level or not, thereby reflecting the water level state in the kettle 9.

As a preferred example in this embodiment, the side wall 301 of the low-level reservoir 3 and the optical element 401 are made of transparent materials, and the optical signal emitted by the photoelectric sensor 402 is projected to the optical element 401 through the side wall 301 of the low-level reservoir 3; alternatively, the side wall 301 of the low-level reservoir 3 is provided with a window opposite to the optical element 401, and the optical signal emitted by the photosensor 402 is projected to the optical element 401 through the window. The transparent material or the light-transmitting window is arranged, so that the low-liquid-level water receiver 3 can be prevented from shielding signal transmission, and a guarantee is provided for stable transmission of optical signals.

The connection manner of the optical element 401 and the low level water reservoir 3 is not limited in this embodiment, and any one of the following examples may be adopted:

example one: the side wall 301 of the low level reservoir 3 is provided with a mounting seat on which the optical element 401 is mounted after manufacture. The optical element 401 and the low-level water reservoir 3 are manufactured and molded separately and then assembled, so that the production difficulty is reduced.

Example two: as shown in fig. 2, the side wall 301 of the low level reservoir 3 and the optical element 401 are integrally formed, and the photoelectric sensor 402 is disposed on one side of the low level reservoir 3 and opposite to the optical element 401. Because the photoelectric liquid level detection unit 4 needs to rely on the projection propagation of the optical element 401 to the optical signal, the projection angle of the installation of the optical element 401 directly relates to the detection precision of the photoelectric liquid level detection unit 4, so that higher requirements are put on the installation position precision of the optical element 401, and the side wall 301 of the low liquid level water reservoir 3 and the optical element 401 are integrally formed, so that on one hand, the assembly process is simplified, and the low assembly efficiency caused by the fact that an assembly staff needs to accurately align the installation position of the optical element 401 is avoided; on the other hand, the side wall 301 of the low-liquid-level water reservoir 3 and the optical element 401 are integrally formed, so that the installation precision of the optical element 401 can be improved, and the problem of detection precision caused by manual errors is avoided; in addition, the side wall 301 of the low-level reservoir 3 and the optical element 401 are integrally formed, so that the influence on the transmission of optical signals caused by auxiliary materials such as auxiliary components and glue required by assembly can be avoided when the assembly is performed after the split forming.

As a preferred embodiment of the present utility model, as shown in fig. 2 and 3, the low level water reservoir 3 includes a liquid inlet 302 and a liquid outlet, and the height difference between the top of the low level water reservoir 3 and the bottom end surface of the water storage cavity of the water kettle 9 is H, where H satisfies: h is more than or equal to 20mm and less than or equal to 30mm. The height difference H between the top of the low-level water reservoir 3 and the bottom end surface of the water storage cavity of the water kettle 9 is set in the range, and a placing space is provided for the optical element 401, so that excessive water cannot remain in the water kettle 9 when the photoelectric liquid level detection unit 4 stops pumping water while the normal operation is guaranteed, the space utilization rate of the water kettle 9 is improved, and the risks that the water pump pumps water and is not full due to too little residual water caused by too low size and the pumped water can generate high-temperature gas injection when passing through the heating unit can be avoided.

As a preferred embodiment of the present utility model, as shown in fig. 1 and 2, the low-level water reservoir 3 includes a base 304 and an upper cover 303 covering the base 304, the base 304 and the upper cover 303 cooperate to form the liquid storage cavity 5, the base 304 is provided with a liquid inlet 302, the upper cover 303 is provided with a liquid outlet, the optical element 401 is provided on the base 304, and the photoelectric sensor 402 is detachably mounted on the outer side of the base 304. The optical element 401 is arranged on the base 304, so that the connection stability of the optical element 401 and the machine body 1 can be improved, the possibility of displacement of the optical element 401 caused by shaking of the machine body 1 and the like is reduced, and the guarantee is provided for the optical element 401 to stably reflect optical signals; in addition, the photoelectric sensor 402 is detachably mounted on the outer side of the base 304, so that the photoelectric sensor 402 can be conveniently mounted, overhauled and replaced after being detached, and the maintenance cost is reduced.

The connection mode of the photoelectric sensor 402 and the low-level water reservoir 3 is not limited in this embodiment, and it may be fixedly connected to the low-level water reservoir 3 by welding or the like. Fixedly connecting the photoelectric sensor 402 with the low-level reservoir 3 can promote the stability of the photoelectric sensor 402.

The detachable connection manner of the photoelectric sensor 402 and the low-level water reservoir 3 is not limited in this embodiment, and any of the following examples may be adopted:

embodiment one: the positioning bracket for installing the photoelectric sensor 402 is provided with mounting holes with opposite positions with the side wall 301 of the base 304, and the photoelectric sensor 402 is connected with the base 304 through fasteners penetrating through the mounting holes.

Embodiment two: as shown in fig. 4 and 5, a positioning column 6 for mounting a photoelectric sensor 402 is arranged on one side of the base 304, a positioning bracket 7 is sleeved on the outer side of the photoelectric sensor 402, and the positioning bracket 7 is connected with the positioning column 6 through a fastener. The positioning column 6 provides an installation position for the photoelectric sensor 402, and can provide a prompting function for an assembler to acquire the installation position of the photoelectric sensor 402, so that the assembly difficulty is reduced; in addition, the positioning support 7 is tightly matched with the positioning column 6 through a fastener, so that the installation stability of the photoelectric sensor 402 is improved, and the normal operation of the photoelectric sensor 402 is ensured.

As a preferred example of the present embodiment, as shown in fig. 4, the base 304 extends upward to wrap at least a part of the area of the upper cover 303, the base 304 is provided with a carrying step 3041, and the upper cover 303 is carried at the carrying step 3041; the inner side of the base 304 and/or the outer side of the upper cover 303 are sleeved with sealing elements to radially seal the liquid storage cavity 5. At least part of the base 304 forms a package on the upper cover 303, and the sealing element matched with the inner side of the base 304 and/or the outer side of the upper cover 303 can effectively seal the liquid storage cavity 5, so that liquid is prevented from flowing out from a gap between the upper cover 303 and the base 304, and the detection precision is improved.

In the present embodiment, the manner of fitting the base 304 and the upper cover 303 is not limited, and the base 304 and the upper cover 303 may be connected by a bolt connection or the like, a clip connection or the like.

The connection manner of the base 304 and the body 1 is not limited in this embodiment, and any of the following embodiments can be adopted:

embodiment one: the base 304 is fixedly connected with the machine body 1 by welding or the like. The fixed connection can promote the stability of base 304, provides stable working space for photoelectric liquid level detection unit 4.

Embodiment two: the base 304 and the body 1 are connected by bolts. The bolt connection is used as a common connection mode, the connection component is convenient to purchase, the cost is low, the production cost is reduced, and the structural design of the water purifier is simplified.

Embodiment III: one of the base 304 and the machine body 1 is provided with a buckling position 8, the other one is provided with a clamping tongue matched with the buckling position 8, and the base 304 is detachably arranged on the machine body 1 through the clamping fit of the buckling position 8 and the clamping tongue. The base 304 is detachably connected with the machine body 1 through the matching of the clamping tongue and the buckling position 8, so that the assembly difficulty of the base 304 is reduced, and the base 304 is convenient to disassemble and overhaul.

As a preferred embodiment of the utility model, the bench-type water purifier further comprises a high-level water reservoir and a water level detection element for detecting the water level in the high-level water reservoir, wherein the high-level water reservoir is positioned above the low-level water reservoir. The high liquid level water receiver is matched with the water level detection element positioned in the high liquid level water receiver to be used for detecting the upper limit of the water level in the water kettle 9, the liquid level in the high liquid level water receiver is kept consistent with the liquid level in the water kettle 9, the water level detection element can monitor the water level in the water kettle 9 by detecting the water level in the low liquid level water receiver 3, and water overflow caused by excessive water supplement in the water kettle 9 due to untimely induction is avoided.

The type of the water level detecting element is not limited in this embodiment, and includes, but is not limited to, a photoelectric liquid level detecting element 4, a float switch water level detecting, or a capacitive water level sensor.

The utility model can be realized by adopting or referring to the prior art at the places which are not described in the utility model.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (10)

1. The utility model provides a desk-top purifier, includes the fuselage, one side of fuselage is equipped with the play water seat that is used for laying the kettle, go out water seat be equipped with water inlet and the delivery port of kettle intercommunication, its characterized in that still includes:

the low liquid level water receiver is arranged in the machine body and is communicated with the water inlet;

the photoelectric liquid level detection unit is used for detecting the water level in the low liquid level water reservoir and comprises an optical element and a photoelectric sensor, wherein the optical element is arranged in the low liquid level water reservoir, the photoelectric sensor is arranged on the outer side of the low liquid level water reservoir, an optical signal sent by the photoelectric sensor can penetrate through the side wall of the low liquid level water reservoir and is projected onto the optical element, and the optical signal can be reflected to the receiving end of the photoelectric sensor by the optical element.

2. The bench top water purifier of claim 1, wherein the water purifier comprises a water inlet and a water outlet,

the low liquid level reservoir comprises a liquid inlet and a liquid outlet, and the optical element is arranged adjacent to the liquid inlet; the optical element is a refractive lens, the refractive lens comprises a first reflecting mirror surface and a second reflecting mirror surface, and the first reflecting mirror surface and the second reflecting mirror surface are respectively attached to the inner side wall of the low-liquid-level water reservoir.

3. The bench-top water purifier of claim 2, wherein the water purifier comprises a water inlet and a water outlet,

the side wall of the low liquid level water reservoir and the optical element are made of transparent materials, and an optical signal sent by the photoelectric sensor is projected to the optical element through the side wall of the low liquid level water reservoir; or,

the side wall of the low liquid level water reservoir is provided with a window opposite to the optical element, and an optical signal sent by the photoelectric sensor is projected to the optical element through the window.

4. The bench-top water purifier of claim 3, wherein the water purifier comprises a water inlet and a water outlet,

the side wall of the low liquid level water reservoir and the optical element are of an integrally formed structure, and the photoelectric sensor is arranged on one side of the low liquid level water reservoir and opposite to the optical element in position.

5. The bench top water purifier of claim 1, wherein the water purifier comprises a water inlet and a water outlet,

the low liquid level water receiver comprises a liquid inlet and a liquid outlet, the height difference between the top of the low liquid level water receiver and the bottom end surface of the water storage cavity of the kettle is H, and the H satisfies: h is more than or equal to 20mm and less than or equal to 30mm.

6. A bench top water purifier as claimed in any of claims 1 to 5, wherein,

the low liquid level water receiver comprises a base and an upper cover covered on the base, the base and the upper cover are matched to form a liquid storage cavity, the base is provided with a liquid inlet, the upper cover is provided with a liquid outlet, the optical element is arranged on the base, and the photoelectric sensor is detachably arranged on the outer side of the base.

7. The bench top water purifier of claim 6, wherein the water purifier comprises a water inlet and a water outlet,

one side of the base is provided with a positioning column for installing the photoelectric sensor, a positioning bracket is sleeved on the outer side of the photoelectric sensor, and the positioning bracket is connected with the positioning column through a fastener.

8. The bench top water purifier of claim 6, wherein the water purifier comprises a water inlet and a water outlet,

the base extends upwards to wrap at least part of the area of the upper cover, the base is provided with a bearing step, and the upper cover is carried at the bearing step; and a sealing piece is sleeved on the inner side of the base and/or the outer side of the upper cover so as to radially seal the liquid storage cavity.

9. The bench top water purifier of claim 8, wherein the water purifier further comprises a water filter,

one of the base and the machine body is provided with a buckling position, the other one of the base and the machine body is provided with a clamping tongue matched with the buckling position, and the base is detachably arranged on the machine body through the clamping fit of the buckling position and the clamping tongue.

10. A bench top water purifier as claimed in any of claims 1 to 5, wherein,

the desk-top water purifier still includes high liquid level water receiver and is used for detecting the water level detection element of the interior water level of high liquid level water receiver, high liquid level water receiver is located the top of low liquid level water receiver.