URINAL

Description

CROSS REFERENCE TO RELATED APPLICATION

This application claims the benefit of priority to: Chinese Patent Application No. 202422053095.5 filed in the Chinese Intellectual Property Office on Aug. 22, 2024, which is hereby incorporated by reference in its entirety.

FIELD

The present disclosure relates to the technical field related to sanitary and in particular relates to a urinal.

BACKGROUND

A surface of a urinal bowl of the urinal needs to be flushed many times a day. After a period of use, the urinal bowl will form scales on the surface through which water flows, and the scales and dirts such as urine stains will form mixed dirt together. Specifically, it is difficult to clean a bend pipe to remove the dirt. Dirt may cause odor, pollute the air, breed bacteria, bring bad experience and even affect health.

In the current urinal, the dirt on the surface of the urinal bowl is removed mainly by manually scrubbing the surface with a detergent. This requires the cost of cleaning materials and labor, and it is difficult to clean the dirt in parts that are not easy to clean such as bend pipes.

SUMMARY

The present disclosure aims to provide a urinal to address the technical problem in that manual scrubbing with detergents is required to remove dirt from the surface of the urinal bowl.

The present disclosure provides a urinal, comprising a urinal bowl, a fixed bracket, a first water pipe, an inlet valve, a filter element, and a nozzle. The fixed bracket is fixedly connected to the urinal bowl. The nozzle is fixed in the fixed bracket. The inlet valve is connected to the nozzle through the first water pipe to form a nozzle inlet pipeline. The filter element is located in (or connected to) the nozzle inlet pipeline. A scale-inhibiting agent is contained in the filter element.

In an embodiment, a valve outlet of the water inlet valve is connected to one end (e.g., an inlet end) of the first water pipe. The other end (e.g., an outlet end) of the first water pipe is connected to a filter element inlet of the filter element. The filter element is detachably connected to the nozzle.

In an embodiment, the nozzle is provided with a nozzle accommodation cavity, and the filter element is accommodated within the nozzle accommodation cavity.

In an embodiment, the fixed bracket comprises a bracket accommodation cavity, and the nozzle is accommodated within the bracket accommodation cavity.

In an embodiment, the fixed bracket also comprises an upper bracket pipe in communication with (e.g., in fluid communication with) the bracket accommodation cavity and/or a lower bracket pipe in communication with (e.g., in fluid communication with) the bracket accommodation cavity.

The upper bracket pipe is fixed above the bracket accommodation cavity. The upper bracket pipe accommodates a first spring and a first ball. An upper end of the first spring presses against a top of the upper bracket pipe. A lower end of the first spring compresses the first ball;

The lower bracket pipe accommodates a second spring and a second ball. A lower end of the second spring presses against a bottom of the lower bracket pipe. An upper end of the second spring compresses the second ball.

In an embodiment, a filter element outlet of the filter element is detachably connected to a valve inlet of the inlet valve, A valve outlet of the inlet valve is connected to one end (e.g., an inlet end) of the first water pipe. The other end (e.g., an outlet end) of the first water pipe is connected to the nozzle.

In an embodiment, a valve outlet of the inlet valve is detachably connected to the filter element inlet of the filter element. A filter element outlet of the filter element is connected to one end (e.g., an inlet end) of the first water pipe. The other end (e.g., an outlet end) of the first water pipe is connected to the nozzle.

In an embodiment, a valve outlet of the inlet valve is connected to the filter element inlet of the filter element through a second water pipe. A filter element outlet of the filter element is connected to one end (e.g., an inlet end) of the first water pipe. The other end (e.g., an outlet end) of the first water pipe is connected to the nozzle.

In an embodiment, the urinal also comprises a filter element bracket fixedly connected with the urinal bowl, and the filter element is detachably connected to the filter element bracket.

In an embodiment, the filter element is also provided with a filter element handle.

For the urinal of the present disclosure, a filter element is added into the nozzle water inlet pipeline formed by connecting the inlet valve, the water pipe, and the nozzle in the urinal bowl. The compound for inhibiting scale in the filter element inhibits substances in the water entering the nozzle. Thus, a good scale-inhibiting effect is achieved, the structure is simple, and the filter element is easy to replace.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an exploded diagram of a urinal according to an embodiment of the present disclosure;

FIG. 2 is an installation diagram of the urinal according to an embodiment of the present disclosure;

FIG. 3 is a structural schematic diagram of the urinal according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a waterway according to an embodiment of the present disclosure;

FIG. 5 is a sectional diagram of a filter element according to an embodiment of the present disclosure;

FIG. 6 is a sectional diagram of the urinal according to an embodiment of the present disclosure;

FIG. 7 is a sectional diagram of a fixed bracket according to an embodiment of the present disclosure;

FIG. 8 is a structural schematic diagram of the urinal according to another embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a waterway according to another embodiment of the present disclosure;

FIG. 10 is a structural schematic diagram of the urinal according to yet another embodiment of the present disclosure;

FIG. 11 is a structural schematic diagram of the urinal according to yet another embodiment of the present disclosure;

FIG. 12 is a schematic diagram of the appearance of the urinal according to yet another embodiment of the present disclosure;

FIG. 13 is schematic diagram illustrating the filter element replacement according to yet another embodiment of the present disclosure;

FIG. 14 is a block diagram of a system of the urinal according to an embodiment of the present disclosure;

FIG. 15 is a block diagram of a controller according to an embodiment of the present disclosure; and

FIG. 16 is a flow chart of a method for manufacturing the urinal according to an embodiment of the present disclosure.

LIST OF REFERENCE NUMBERS

1. Urinal bowl; 11. nozzle mounting hole; 2. fixed bracket; 21. bracket accommodation cavity; 22. upper bracket pipe; 221. first spring; 222. first ball; 23. lower bracket pipe; 231. second spring; 232. second ball; 3. first water pipe; 4. inlet valve; 41. valve inlet; 42. valve outlet; 5. filter element; 51. filter element handle; 52. filter element accommodation cavity; 53. filter element inlet; 54. filter element outlet; 55. agent; 6. nozzle; 61. nozzle accommodation cavity; 62. nozzle outlet; 7. second water pipe; 8. filter element bracket.

DETAILED DESCRIPTION

The embodiments of the present disclosure are further described with reference to the drawings. Same or equivalent parts are denoted by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “up” and “down” used in the present disclosure refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions towards or away from geometric centers of specific parts, respectively.

As shown in FIGS. 1 and 2, a urinal 100 according to an embodiment of the present disclosure comprises a urinal bowl 1, a fixed bracket 2, a first water pipe 3, an inlet valve 4, a filter element 5, and a nozzle 6. The fixed bracket 2 is fixedly connected to the urinal bowl 1. The nozzle 6 is fixed in the fixed bracket 2. The inlet valve 4 is connected to the nozzle 6 through the first water pipe 3 to form a nozzle inlet pipeline. The filter element 5 is located in (or connected to) the nozzle inlet pipeline. A scale-inhibiting agent is contained in the filter element 5.

Specifically, the fixed bracket 2 is fixed on the urinal bowl 1, and the nozzle 6 is fixed on the fixed bracket 2. In an embodiment, the fixed bracket 2 is fixed on the back of the urinal bowl 1. The urinal bowl 1 is provided with a nozzle mounting hole 11, and the nozzle 6 extends from the nozzle mounting hole 11 for spraying water to the urinal space surrounded by the bowl surface of the urinal bowl 1 to clean the urinal bowl 1.

The inlet valve 4 is connected to the nozzle 6 through the first water pipe 3 to form a nozzle inlet pipeline. The filter element 5 is mounted in the nozzle inlet pipeline. The filter element 5 contains (e.g., house) a scale-inhibiting agent (e.g., an agent 55).

As shown in FIG. 5, in some embodiments, the filter element 5 comprises a filter element accommodation cavity 52, a filter element inlet 53 in communication with (e.g., in communication with) the filter element accommodation cavity 52, and a filter element outlet 54. The filter element accommodation cavity 52 contains the agent 55.

The scale-inhibiting agent comprises chemical and non-chemical types.

The chemical agent comprises, but are not limited to, polyphosphates (e.g., sodium hexametaphosphate (SHMP), tetrapotassium pyrophosphate (TKPP), etc.), low-pH acids (e.g., hydrochloric acid (HCl)), dihydrogen phosphate (H₂PO₄), trisodium phosphate (TSP), ethylenediaminetetraacetic acid (EDTA), and combinations thereof, and other acids and/or chelating agents. These agents may be advantageous, for example, for preventing and/or removing scale. Other examples of agents used in the system of the present disclosure comprise, but are not limited to, didecyldimethylammonium chloride (DDAC), H₂O₂, sodium hypochlorite (NaClO) (e.g., bleach), peracetic acid (PAA), triclosan, formic acid, TSP, and compounds thereof, as well as other disinfectants (e.g., quaternary ammonium compound disinfectants) and antimicrobial agents (biocides). These agents may be advantageous, for example, for preventing and/or removing biofilms.

The non-chemical agents that mitigate (e.g., reduce, remove, etc.) scale and other contaminants may also be employed. One such example is the use of beads (e.g., flowing beads, media, etc.) as non-chemical agents for inhibiting scale, which may involve template assisted crystallization (TAC). Certain minerals (e.g., calcium, magnesium, etc.) may adhere to a surface (e.g., an inner surface of a bowl of a toilet) when in an ionic form (e.g., ionic state) but do not adhere to a surface when crystallized (i.e., in crystalline form). Beads involving TAC change the mineral from its ionic form to its crystalline form to prevent mineral attachment to the system surface and/or induce mineral departure from the surface. Accordingly, the flowing beads may help clean the system surface by preventing mineral deposits from adhering to the surface and/or knocking off mineral deposits adhering to the surface, by utilizing the interaction and/or friction of the materials.

The urinal bowl flushing water is sprayed on the urinal bowl surface of the urinal bowl 1 after the water passes through the filter element 5 for removing scale.

For the urinal of the present disclosure, the filter element 5 is added into the nozzle water inlet pipeline formed by connecting the inlet valve 4, the first water pipe 3, and the nozzle 6 in the urinal bowl. The scale-inhibiting agent in the filter element 5 inhibits substances in the water entering the nozzle 6. Thus, a good scale-inhibiting effect is achieved, the structure is simple, and the filter element is easy to replace.

There are many options for arranging the position of the filter element 5 in the nozzle inlet pipeline.

As shown in FIG. 3, in one of the embodiments, a valve outlet 42 of the water inlet valve 4 is connected to one end (e.g., an inlet end) of the first water pipe 3, the other end (e.g., an outlet end) of the first water pipe 3 is connected to a filter element inlet of the filter element 5, and the filter element 5 is detachably connected to the nozzle 6.

FIG. 4 is a schematic diagram of the waterway of the present embodiment. The water enters the inlet valve 4, passes through the filter element 5 to remove scale, and is sprayed out from the nozzle 6 to clean the bowl surface of the urinal bowl 1.

The filter element 5 is detachably connected to the nozzle 6. When the filter element 5 needs to be replaced, the filter element 5 and the nozzle 6 are disassembled from other components, and the filter element 5 is removed from the nozzle 6 and replaced with a new filter element 5. Then, the first water pipe 3 is connected to the nozzle 6, and the nozzle 6 and the filter element 5 are re-inserted into the nozzle mounting hole 11. The first water pipe 3 of the present disclosure is detachably connected to other components. To replace the filter element, the water pipe may be disassembled from other components for replacement. After the replacement, the first water pipe 3 may be connected to other components to restore the waterway.

The filter element of the present embodiment is integrally mounted with the nozzle, which is convenient for disassembly.

In one of the embodiments, the nozzle 6 is provided with a nozzle accommodation cavity 61, and the filter element 5 is accommodated within the nozzle accommodation cavity 61.

As shown in FIG. 5, the nozzle 6 comprises the nozzle accommodation cavity 61 and a nozzle outlet 62 connected to the nozzle accommodation cavity 61. The filter element 5 is accommodated in the nozzle accommodation cavity 61. The filter element outlet 54 of the filter element 5 is oriented toward the nozzle outlet 62.

In this embodiment, the filter element 5 is disposed within the nozzle accommodation cavity 61, so that the filter element 5 and the nozzle 6 are connected as a whole, which is convenient for mounting.

In one of the embodiments, the fixed bracket 2 comprises a bracket accommodation cavity 21, and the nozzle 6 is accommodated within the bracket accommodation cavity 21.

As shown in FIGS. 5, 6, and 7, the fixed bracket 2 is provided with a bracket accommodation cavity 21 for accommodating the nozzle 6. Through the bracket accommodation cavity 21, the nozzle 6 may be stabilized. Also, when disassembly is required, the nozzle 6 may be conveniently extracted from the bracket accommodation cavity 21, and the filter element 5 may be conveniently replaced. FIG. 7 is an enlarged diagram of block A in FIG. 6.

In this embodiment, the bracket accommodation cavity 21 is provided to facilitate the disassembly of the nozzle.

In one of the embodiments, the fixed bracket 2 also comprises an upper bracket pipe 22 in communication with the bracket accommodation cavity 21 and/or a lower bracket pipe 23 in communication with the bracket accommodation cavity 21.

The upper bracket pipe 22 is fixed above the bracket accommodation cavity 21. The upper bracket pipe 22 accommodates a first spring 221 and a first ball 222. An upper end of the first spring 221 presses against a top of the upper bracket pipe 22, and a lower end of the first spring 221 compresses the first ball 222.

The lower bracket pipe 23 accommodates a second spring 231 and a second ball 232. A lower end of the second spring 231 presses against a bottom of the lower bracket pipe 23. An upper end of the second spring 231 compresses the second ball 232.

Specifically, the fixed bracket 2 may be provided with an upper bracket pipe 22, a lower bracket pipe 23, or both the upper bracket pipe 22 and the lower bracket pipe 23.

In an embodiment, the fixed bracket 2 is provided with two upper bracket pipes 22 and two lower bracket pipes 23.

The upper bracket pipe 22 houses a first spring 221 and a first ball 222. An upper end of the first spring 221 presses a top of the upper bracket pipe 22, and a lower end of the first spring 221 compresses the first ball 222. The first ball 222 is compressed by the first spring 221, so as to apply a compressive force on the nozzle 6 to secure it. Similarly, the lower bracket pipe 23 houses a second spring 231 and a second ball 232. A lower end of the second spring 231 presses a bottom of the lower bracket pipe 23. An upper end of the second spring 231 compresses the second ball 232. The second ball 232 is compressed by the second spring 231 so as to apply a compressive force on the nozzle 6 to secure the nozzle 6.

In this embodiment, a compressive force is applied on the nozzle through the spring and small ball assembly to fix the nozzle. Also, because the small ball is employed, it is convenient to disassemble.

The filter element 5 may also be provided at other positions of the nozzle inlet pipeline.

As shown in FIG. 8, in one of the embodiments, a filter element outlet 54 of the filter element 5 is detachably connected to a valve inlet 41 of the inlet valve 4, a valve outlet 42 of the inlet valve 4 is connected to one end (e.g., an inlet end) of the first water pipe 3, and the other end (e.g., an outlet end) of the first water pipe 3 is connected to the nozzle 6.

FIG. 9 is a schematic diagram of the waterway of the present embodiment. The water passes through the filter element 5 to remove scale, enters the inlet valve 4, and is sprayed out from the nozzle 6 to clean the bowl surface of the urinal bowl 1.

The embodiment provides another filter element arrangement configuration, where the filter element 5 is provided at a valve inlet of the inlet valve 4.

The filter element 5 may also be provided at other positions of the nozzle inlet pipeline.

As shown in FIG. 10, in one of the embodiments, a valve outlet 42 of the inlet valve 4 is detachably connected to a filter element inlet 53 of the filter element 5, a filter element outlet 54 of the filter element 5 is connected to one end (e.g., an inlet end) of the first water pipe 3, and the other end (e.g., an outlet end) of the first water pipe 3 is connected to the nozzle 6.

FIG. 4 is a schematic diagram of the waterway of the present embodiment. The water enters the inlet valve 4, passes through the filter element 5 to remove scale, and is sprayed out from the nozzle 6 to clean the bowl surface of the urinal bowl 1.

The embodiment provides another filter element arrangement configuration, where the filter element 5 is provided at the valve outlet of the inlet valve 4.

As shown in FIG. 11, in one of the embodiments, a valve outlet 42 of the inlet valve 4 is connected to a filter element inlet 53 of the filter element 5 through a second water pipe 7, a filter element outlet 54 of the filter element 5 is connected to one end (e.g., an inlet end) of the first water pipe 3, and the other end (e.g., an outlet end) of the first water pipe 3 is connected to the nozzle 6.

In this embodiment, the filter element 5 is connected to the inlet valve 4 through the second water pipe 7, which is convenient for the filter element to adjust position.

As shown in FIGS. 12 and 13, in one of the embodiments, the urinal also comprises a filter element bracket 8 fixedly connected to the urinal bowl 1, and the filter element 5 is detachably connected to the filter element bracket 8.

Specifically, the filter element bracket 8 may be mounted on a side wall of the urinal bowl 1. The filter element 5 is detachably connected to the filter element bracket 8. As shown in FIG. 13, when the filter element 5 needs to be replaced, the filter element 5 may be separated from the first water pipe 3 and the second water pipe 7, and the filter element 5 may be taken out from the filter element bracket 8. After replacing the new filter element 5, a user may insert the filter element 5 into the filter element bracket 8 and may connect the filter element 5 to the first water pipe 3 and the second water pipe 7 to restore the waterway.

In this embodiment, the filter element 5 and the filter element bracket 8 may be detachably connected, so that the filter element 5 can be replaced conveniently.

In one embodiment, the filter element 5 is also provided with a filter element handle 51.

Specifically, the filter element handle 51 is connected and fixed to the end portion of the filter element 5.

In this embodiment, the filter element handle is provided to facilitate the user to disassemble the filter element.

An embodiment of the present disclosure further provides a system of a urinal. FIG. 14 is a block diagram of a system of the urinal according to an embodiment of the present disclosure. As shown in FIG. 14, a system 200 of a urinal comprises the urinal 100 according any of the embodiments as described above and a controller 300.

FIG. 15 is a block diagram of a controller according to an embodiment of the present disclosure. As shown in FIG. 15, the controller 300 comprises a processor 310, a communication unit 320 communicably connected to the processor 310, and a storage 330 communicably connected to the processor 310. The controller 300 may perform any functions and operation as described above. For example, the controller 300 (e.g., the processor 310) my control the nozzle 6 to spray water (e.g., urinal bowl flushing water) on the urinal bowl surface of the urinal bowl 1 after the water passes through the filter element 5 for removing scale.

The controller 300 in the present disclosure can be implemented by any appliances or by any software or applications run by the appliances. The controller 300 may be connected to a workstation or another external device (e.g., control panel, remote) and/or a database for receiving user inputs, system characteristics, and any of the values described herein. Optionally, the controller 300 may include an input device and/or a sensing circuit in communication with any of the sensors. The sensing circuit receives sensor measurements from as described above. Optionally, the controller 300 may include a drive unit for receiving and reading non-transitory computer media having instructions. Additional, different, or fewer components may be included.

The processor 310 is configured to perform instructions stored in memory for executing the algorithms described herein. The processor 310 may be a general purpose or specific purpose processor, an application specific integrated circuit (ASIC), one or more programmable logic controllers (PLCs), one or more field programmable gate arrays (FPGAs), a group of processing components, or other suitable processing components. The processor 310 is configured to execute computer code or instructions stored in memory or received from other computer readable media (e.g., embedded flash memory, local hard disk storage, local ROM, network storage, a remote server, etc.). The processor 310 may be a single device or combinations of devices, such as associated with a network, distributed processing, or cloud computing.

The communication unit 320 may include any operable connection, ingress ports, and egress ports. An operable connection may be one in which signals, physical communications, and/or logical communications may be sent and/or received. An operable connection may include a physical interface, an electrical interface, and/or a data interface. The communication unit 320 may be connected to a network. The network may include wired networks (e.g., Ethernet), wireless networks, or combinations thereof. The wireless network may be a cellular telephone network, an 802.11, 802.16, 802.20, or WiMax network, a Bluetooth pairing of devices, or a Bluetooth mesh network. Further, the network may be a public network, such as the Internet, a private network, such as an intranet, or combinations thereof, and may utilize a variety of networking protocols now available or later developed including, but not limited to TCP/IP based networking protocols.

In an embodiment, the storage 330 may include one or more devices (e.g., memory units, memory devices, storage devices, etc.) for storing data and/or computer code for completing and/or facilitating the various processes described in the present disclosure. The storage 330 may include random access memory (RAM), read-only memory (ROM), hard drive storage, temporary storage, non-volatile memory, flash memory, optical memory, or any other suitable memory for storing software objects and/or computer instructions. The storage 330 may include database components, object code components, script components, or any other type of information structure for supporting the various activities and information structures described in the present disclosure. The storage 330 may be communicably connected to processor via a processing circuit and may include computer code for executing (e.g., by the processor 310) one or more processes described herein. For example, the storage 330 may include graphics, web pages, HTML files, XML files, script code, shower configuration files, or other resources for use in generating graphical user interfaces for display and/or for use in interpreting user interface inputs to make command, control, or communication decisions.

An embodiment of the present disclosure further provides a method for manufacturing the urinal. FIG. 16 is a flow chart of a method for manufacturing the urinal according to an embodiment of the present disclosure. Here, the urinal manufactured by the method is the urinal 100 according to any of the embodiments of the present disclosure. The descriptions regarding the urinal 100 as described in the present disclosure are incorporated herein. The urinal 100 is configured to perform an operation, function, or the like as described in the present disclosure.

At act S101, the fixed bracket 2 is fixedly connected to the urinal bowl 1.

Specifically, as described above, in an embodiment, the fixed bracket 2 is fixed on the back of the urinal bowl 1. The urinal bowl 1 is provided with a nozzle mounting hole 11, and the nozzle 6 extends from the nozzle mounting hole 11 for spraying water to the urinal space surrounded by the bowl surface of the urinal bowl 1 to clean the urinal bowl 1.

At act S102, the nozzle 6 is installed in the fixed bracket 2.

Specifically, as described above, the fixed bracket 2 is provided with a bracket accommodation cavity 21 for accommodating the nozzle 6. Through the bracket accommodation cavity 21, the nozzle 6 may be stabilized. Also, when disassembly is required, the nozzle 6 may be conveniently extracted from the bracket accommodation cavity 21, and the filter element 5 may be conveniently replaced.

At act S103, the nozzle inlet pipeline is formed by connecting the inlet valve 4 to the nozzle 6 through the first water pipe 3.

At act S104, the filter element 5 is connected to the nozzle inlet pipeline.

Specifically, as described above, the filter element 5 is added into the nozzle water inlet pipeline formed by connecting the inlet valve 4, the first water pipe 3, and the nozzle 6 in the urinal bowl. The scale-inhibiting agent in the filter element 5 inhibits substances in the water entering the nozzle 6. Thus, a good scale-inhibiting effect is achieved, the structure is simple, and the filter element is easy to replace.

As shown in FIG. 3, in one of the embodiments, a valve outlet 42 of the water inlet valve 4 is connected to one end (e.g., an inlet end) of the first water pipe 3, the other end (e.g., an outlet end) of the first water pipe 3 is connected to a filter element inlet of the filter element 5, and the filter element 5 is detachably connected to the nozzle 6.

As shown in FIG. 8, in one of the embodiments, a filter element outlet 54 of the filter element 5 is detachably connected to a valve inlet 41 of the inlet valve 4, a valve outlet 42 of the inlet valve 4 is connected to one end (e.g., an inlet end) of the first water pipe 3, and the other end (e.g., an outlet end) of the first water pipe 3 is connected to the nozzle 6.

As shown in FIG. 10, in one of the embodiments, a valve outlet 42 of the inlet valve 4 is detachably connected to a filter element inlet 53 of the filter element 5, a filter element outlet 54 of the filter element 5 is connected to one end (e.g., an inlet end) of the first water pipe 3, and the other end (e.g., an outlet end) of the first water pipe 3 is connected to the nozzle 6.

As shown in FIG. 11, in one of the embodiments, a valve outlet 42 of the inlet valve 4 is connected to a filter element inlet 53 of the filter element 5 through a second water pipe 7, a filter element outlet 54 of the filter element 5 is connected to one end (e.g., an inlet end) of the first water pipe 3, and the other end (e.g., an outlet end) of the first water pipe 3 is connected to the nozzle 6.

The embodiments described above merely illustrate several embodiments of the disclosure. Although the present disclosure is relatively specific and detailed, it should not be understood as a limitation to the protection scope of the present disclosure. It should be pointed out that, for those having ordinary skill in the art, various modifications and improvements may be made without departing from the inventive concept of the present disclosure, all of which should fall within the protection scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the appended claims.