阅读说明：本技术 一种智能食材清理设备及其工作方法 (Intelligent food material cleaning equipment and working method thereof ) 是由 钱继红 于 2020-11-06 设计创作，主要内容包括：本发明公开了一种智能食材清理设备及其工作方法,包括壳体以及控制机构,控制机构包括处理单元、驱动单元以及存储单元,存储单元内预置有食材种类以及与食材种类对应的清理方案,壳体包括第一开口部、电动滚筒、冲洗装置以及裁剪装置,电动滚筒的筒身上设置有第三开口部,筒身的其余位置设置有若干通孔,第一开口部处设置有第一电动门体,第三开口部处设置为第二电动门体,第二开口部设置呈由外向内的收窄结构,电动滚筒与驱动单元连接,冲洗装置设置于电动滚筒的上方,且包括蓄水箱,蓄水箱与外部水源连通,电动滚筒的下方设置有滤水支架,裁剪装置设置于滤水支架的左右两侧,且包括至少两组屈伸臂以及与屈伸臂相连的电动剪。(The invention discloses an intelligent food material cleaning device and a working method thereof, and the intelligent food material cleaning device comprises a shell and a control mechanism, wherein the control mechanism comprises a processing unit, a driving unit and a storage unit, the storage unit is internally preset with food material types and cleaning schemes corresponding to the food material types, the shell comprises a first opening part, an electric roller, a washing device and a cutting device, a third opening part is arranged on the barrel body of the electric roller, a plurality of through holes are arranged at the rest positions of the barrel body, a first electric door body is arranged at the first opening part, a second electric door body is arranged at the third opening part, a narrowing structure from outside to inside is arranged at the second opening part, the electric roller is connected with the driving unit, the washing device is arranged above the electric roller and comprises a water storage tank, the water storage tank is communicated with an external water source, a water filtering support is arranged below the electric roller, and the cutting device is arranged at the, and comprises at least two groups of flexion and extension arms and electric scissors connected with the flexion and extension arms.)

1. An intelligent food material cleaning device comprises a shell and a control mechanism, and is characterized in that the control mechanism comprises a processing unit, a driving unit and a storage unit, wherein the processing unit is respectively connected with the driving unit and the storage unit, food material types and cleaning schemes corresponding to the food material types are preset in the storage unit, the shell comprises a first opening part, an electric roller, a washing device and a cutting device, the first opening part is arranged on the side surface of the shell, the electric roller is arranged behind the first opening part, a second opening part is arranged at a position adjacent to the first opening part, a third opening part is arranged on a barrel body of the electric roller, a plurality of through holes are arranged at the rest positions of the barrel body, a first electric door body is arranged at the first opening part, and a second electric door body is arranged at the third opening part, first electric door body and second electric door body respectively with the drive unit is connected, the setting of second opening is outside-in's narrowing structure, electric drum with the drive unit is connected, washing unit set up in electric drum's top, and include the water storage box, water storage box and outside water source intercommunication, washing unit with the drive unit is connected, electric drum's below is provided with the drainage support, tailor the device set up in the left and right sides of drainage support, and including at least two sets of arm and with bend the electronic scissors that the arm links to each other, bend arm and electronic scissors respectively with the drive unit connects.

2. The intelligent food material cleaning device as claimed in claim 1, wherein: the water filtering device is characterized in that a drainage box is arranged below the water filtering support and is used for receiving wastewater and communicated with a kitchen drainage pipeline, and the drainage box comprises an electric valve which is connected with the driving unit.

3. The intelligent food material cleaning device as claimed in claim 2, wherein: the water storage tank is internally provided with a water suction pump, the water suction pump is communicated with the water storage tank through a water delivery conduit, and the water suction pump is connected with the driving unit and used for transferring the available wastewater in the water storage tank into the water storage tank.

4. The intelligent food material cleaning device as claimed in claim 1, wherein: the control mechanism further comprises a rotating speed adjusting unit, the rotating speed adjusting unit is connected with the processing unit and used for adjusting the rotating speed of the electric drum according to the food material types in the electric drum, and the cleaning scheme comprises the water consumption of the flushing device and the rotating speed of the electric drum.

5. The intelligent food material cleaning device as claimed in claim 1, wherein: the shell is further provided with a camera device, and the camera device is connected with the processing unit and used for acquiring food material images placed in the electric roller and sending the images to the processing unit.

6. The working method of the intelligent food material cleaning device according to any one of claims 1-5, characterized by comprising the following working steps:

s101: the food processing device comprises a processing unit, a driving unit, a motor drum, a first electric door body, a second electric door body, a motor drum, a first opening signal and a second closing signal, wherein the processing unit outputs the first opening signal to the driving unit, the driving unit drives the first electric door body to open, and after a user puts food materials into the electric drum, the processing unit outputs the first closing signal to the driving unit, and the driving unit drives the first electric door body to;

s102: the processing unit outputs a rolling signal to the driving unit, and the driving unit drives the electric roller to start;

s103: the processing unit outputs a flushing signal to the driving unit, and the driving unit drives the flushing device to start;

s104: the processing unit outputs a second opening signal to the driving unit, the driving unit drives a second electric door body to open, food materials in the electric roller fall on the water filtering support below the electric roller, the processing unit outputs a second closing signal to the driving unit, and the driving unit drives the second electric door body to close;

s105: the processing unit outputs a cutting signal to the driving unit, the driving unit drives the flexible arm to extend towards the food material on the water filtering support, and then the electric shears are driven to divide the food material into a plurality of small sections.

7. The working method of the intelligent food material cleaning equipment as claimed in claim 6, wherein the working method comprises the following steps: s103 further comprises:

and the processing unit outputs a third opening signal to the driving unit, and the driving unit drives the electric valve to open.

8. The working method of the intelligent food material cleaning device according to claim 7, characterized in that: further comprising:

the electric roller and the flushing device are started at the same time, and are automatically closed when the time is up, when the flushing progress reaches 80%, the processing unit outputs a third closing signal to the driving unit, and the driving unit drives the electric valve to close;

the processing unit outputs a circulation signal to the driving unit, and the driving unit drives the water suction pump to start.

9. The working method of the intelligent food material cleaning equipment as claimed in claim 6, wherein the working method comprises the following steps: s102 further comprises:

the food material type processing device comprises a shell, and is characterized in that a parameter input panel is arranged on the shell, a processing unit acquires a food material type set by a user, extracts a rotating speed corresponding to the food material type from a storage unit, and controls the electric drum to operate at the rotating speed.

10. The working method of the intelligent food material cleaning device according to claim 9, wherein the working method comprises the following steps: s101 further includes:

the shooting device acquires the food material image placed in the electric roller and sends the image to the processing unit;

the processing unit automatically analyzes the type of the food material.

Technical Field

The invention relates to the field of household equipment, in particular to intelligent food material cleaning equipment and a working method thereof.

Background

Food safety is a major subject influencing human development, food safety work is done seriously, the delicate task of carefully cleaning food materials needs to be done, at the present stage, the food material cleaning mode mainly adopts a manual cleaning mode, and food materials are scrubbed by hands and washed by water, or soaked and washed in water, however, the fast-paced life easily allows people to neglect the delicate degree of cleaning; in addition, in the process of cleaning food materials, the vegetable washing water is splashed to the table top or the ground, and the cleaning difficulty is increased.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the background art, the embodiment of the invention provides intelligent food material cleaning equipment and a working method thereof, which can effectively solve the problems related to the background art.

The technical scheme is as follows:

an intelligent food material cleaning device comprises a shell and a control mechanism, wherein the control mechanism comprises a processing unit, a driving unit and a storage unit, the processing unit is respectively connected with the driving unit and the storage unit, a food material type and a cleaning scheme corresponding to the food material type are preset in the storage unit, the shell comprises a first opening part, an electric roller, a washing device and a cutting device, the first opening part is arranged on the side surface of the shell, the electric roller is arranged at the rear part of the first opening part, a second opening part is arranged at a position adjacent to the first opening part, a third opening part is arranged on a barrel body of the electric roller, a plurality of through holes are arranged at the rest positions of the barrel body, a first electric door body is arranged at the first opening part, and a second electric door body is arranged at the third opening part, first electric door body and second electric door body respectively with the drive unit is connected, the setting of second opening is outside-in's narrowing structure, electric drum with the drive unit is connected, washing unit set up in electric drum's top, and include the water storage box, water storage box and outside water source intercommunication, washing unit with the drive unit is connected, electric drum's below is provided with the drainage support, tailor the device set up in the left and right sides of drainage support, and including at least two sets of arm and with bend the electronic scissors that the arm links to each other, bend arm and electronic scissors respectively with the drive unit connects.

As a preferable mode of the present invention, a drain tank is disposed below the water filtering support, the drain tank is used for receiving wastewater and is communicated with a kitchen drain pipe, and the drain tank includes an electric valve, and the electric valve is connected to the driving unit.

As a preferable mode of the present invention, a water suction pump is disposed in the water discharge tank, the water suction pump is communicated with the water storage tank through a water delivery conduit, and the water suction pump is connected to the driving unit and is configured to transfer the waste water available in the water discharge tank into the water storage tank.

As a preferable mode of the present invention, the control mechanism further includes a rotation speed adjusting unit, the rotation speed adjusting unit is connected to the processing unit and is configured to adjust a rotation speed of the motorized pulley according to a type of food material in the motorized pulley, and the cleaning scheme includes a water consumption amount of the washing device and a rotation speed of the motorized pulley.

As a preferable mode of the present invention, the housing is further provided with an image pickup device, and the image pickup device is connected to the processing unit and is configured to acquire an image of the food material placed in the motorized drum and send the image to the processing unit.

A working method of intelligent food material cleaning equipment comprises the following working steps:

s101: the food processing device comprises a processing unit, a driving unit, a motor drum, a first electric door body, a second electric door body, a motor drum, a first opening signal and a second closing signal, wherein the processing unit outputs the first opening signal to the driving unit, the driving unit drives the first electric door body to open, and after a user puts food materials into the electric drum, the processing unit outputs the first closing signal to the driving unit, and the driving unit drives the first electric door body to;

s102: the processing unit outputs a rolling signal to the driving unit, and the driving unit drives the electric roller to start;

s103: the processing unit outputs a flushing signal to the driving unit, and the driving unit drives the flushing device to start;

s104: the processing unit outputs a second opening signal to the driving unit, the driving unit drives a second electric door body to open, food materials in the electric roller fall on the water filtering support below the electric roller, the processing unit outputs a second closing signal to the driving unit, and the driving unit drives the second electric door body to close;

s105: the processing unit outputs a cutting signal to the driving unit, the driving unit drives the flexible arm to extend towards the food material on the water filtering support, and then the electric shears are driven to divide the food material into a plurality of small sections.

As a preferred embodiment of the present invention, S103 further includes:

and the processing unit outputs a third opening signal to the driving unit, and the driving unit drives the electric valve to open.

As a preferred embodiment of the present invention, the present invention further comprises:

the electric roller and the flushing device are started at the same time, and are automatically closed when the time is up, when the flushing progress reaches 80%, the processing unit outputs a third closing signal to the driving unit, and the driving unit drives the electric valve to close;

the processing unit outputs a circulation signal to the driving unit, and the driving unit drives the water suction pump to start.

As a preferred aspect of the present invention, S102 further includes:

the food material type processing device comprises a shell, and is characterized in that a parameter input panel is arranged on the shell, a processing unit acquires a food material type set by a user, extracts a rotating speed corresponding to the food material type from a storage unit, and controls the electric drum to operate at the rotating speed.

As a preferred embodiment of the present invention, S101 further includes:

the shooting device acquires the food material image placed in the electric roller and sends the image to the processing unit;

the processing unit automatically analyzes the type of the food material.

The invention realizes the following beneficial effects:

1. the food materials are placed into the electric drum and the types of the food materials are set by a user, cleaning schemes of different food material types are preset in the storage unit, the cleaning schemes comprise the rotating speed of the electric drum and the water consumption of the washing device, and after the food materials are cleaned, the food materials fall onto the water filtering support from the lower part of the electric drum, so that redundant water for washing vegetables can be filtered; the cutting device cuts food materials on the water filtering support into a plurality of small sections, and automation of vegetable washing and cutting is achieved.

2. When the washing progress reaches 80%, close electric valve, remaining vegetable washing water just stores in the drain tank, starts the water absorption pump and shifts the vegetable washing water in the drain tank to the cistern, improves the utilization ratio of water resource.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic view of a first structure of an intelligent food material cleaning device provided by the invention.

Fig. 2 is a schematic view of a second structure of the intelligent food material cleaning device provided by the invention.

FIG. 3 is a schematic diagram of a connection of processing units according to the present invention.

Fig. 4 is a flowchart of a working method of the intelligent food material cleaning device provided by the invention.

Fig. 5 is a flow chart of a working method of the rotation speed adjusting unit provided by the invention.

Fig. 6 is a flow chart of the working method of the water suction pump provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

As shown in fig. 1-3, this embodiment provides an intelligent food material cleaning device, which includes a housing 1 and a control mechanism, the control mechanism includes a processing unit 2, a driving unit 3 and a storage unit 4, the processing unit 2 is respectively connected to the driving unit 3 and the storage unit 4, a food material type and a cleaning scheme corresponding to the food material type are preset in the storage unit 4, the housing 1 includes a first opening portion 5, an electric drum 6, a flushing device 7 and a cutting device, the first opening portion 5 is disposed on a side surface of the housing 1, the electric drum 6 is disposed behind the first opening portion 5, a second opening portion 8 is disposed at a position adjacent to the first opening portion 5, a third opening portion is disposed on a drum body of the electric drum 6, and a plurality of through holes are disposed at other positions of the drum body, a first electric motor-driven door body 10 is arranged at the first opening part 5, a second electric motor-driven door body 11 is arranged at the third opening part, the first electric door body 10 and the second electric door body 11 are respectively connected with the driving unit 3, the second opening part 8 is arranged to be in a narrowing structure from outside to inside, the electric roller 6 is connected with the driving unit 3, the flushing device 7 is arranged above the electric roller 6, and comprises a water reservoir 12, said water reservoir 12 being in communication with an external water source, said flushing device 7 being connected to said drive unit 3, a water filtering bracket 13 is arranged below the electric roller 6, the cutting devices are arranged at the left side and the right side of the water filtering bracket 13, and comprises at least two sets of flexion and extension arms 14 and electric scissors 15 connected with the flexion and extension arms 14, wherein the flexion and extension arms 14 and the electric scissors 15 are respectively connected with the driving unit 3.

Drainage box 16 is provided with in the below of drainage support 13, drainage box 16 is used for receiving waste water, and communicates with kitchen drainage pipe, drainage box 16 includes electric valve 17, electric valve 17 with drive unit 3 is connected.

A water suction pump 18 is arranged in the drainage tank 16, the water suction pump 18 is communicated with the water storage tank 12 through a water delivery conduit 19, and the water suction pump 18 is connected with the driving unit 3 and is used for transferring the available wastewater in the drainage tank 16 into the water storage tank 12.

The control mechanism further comprises a rotating speed adjusting unit 20, the rotating speed adjusting unit 20 is connected with the processing unit 2 and used for adjusting the rotating speed of the electric drum 6 according to the food material types in the electric drum 6, and the cleaning scheme comprises the water consumption of the washing device 7 and the rotating speed of the electric drum 6.

The shell 1 is further provided with a camera device 21, and the camera device 21 is connected with the processing unit 2 and used for acquiring an image of food materials placed in the electric drum 6 and sending the image to the processing unit 2.

Specifically, the food material cleaning device provided by the embodiment includes a housing 1, a processing unit 2, a driving unit 3, a storage unit 4, a first opening portion 5, an electric drum 6, a washing device 7, a second opening portion 8, a third opening portion, a first electric door 10, a second electric door 11, a water storage tank 12, a water filtering bracket 13, a bending and stretching arm 14, an electric scissors 15, a water drainage tank 16, an electric valve 17, a water suction pump 18, a water delivery conduit 19, a rotation speed adjusting unit 20, and an image pickup device 21.

The casing 1 is provided with two openings, one opening is used for placing food materials, the other opening is used for taking out the food materials, the opening for placing the food materials is set as a first opening portion 5, and the opening for taking out the food materials is set as a fourth opening portion.

The first opening part 5 is located on the upper portion of the middle of the shell 1, the electric drum 6 is located behind the first opening part 5, the electric drum 6 is transversely arranged, two openings are formed in the electric drum 6, one opening is used for containing food materials, the other opening is used for transferring the food materials, the opening where the food materials are contained is defined as a second opening part 8, the second opening part 8 is adjacent to the first opening part 5, the second opening part 8 is arranged to be of a horn-mouth structure, the second opening part 8 is kept in an open state, the opening where the food materials are transferred is defined as a third opening part, the third opening part is arranged on a cylindrical drum body, the length of the third opening part is slightly smaller than that of the drum body of the electric drum 6, and through holes which are uniformly distributed are formed in the rest positions of the drum body of the electric drum 6 and are used for filtering water.

The first motor-driven door 10 and the second motor-driven door 11 are provided at positions of the first opening 5 and the third opening, and the second motor-driven door 11 is provided in an arc shape.

The washing device 7 is arranged above the electric roller 6, the washing device 7 comprises a water storage tank, the water storage tank is communicated with kitchen water, water can be stored in the water storage tank, and therefore, an external water source is not needed when vegetables are washed.

A water filtering support 13 is arranged below the electric roller 6, the water filtering support 13 is connected with the shell 1 through a sliding rail, the water filtering support 13 corresponds to the fourth opening and can be drawn out from the inside of the shell 1, so that the food materials which are washed are taken out.

The cutting device is arranged on two sides of the water filtering support 13 and at least comprises two groups of stretching arms 14 and electric shears 15 connected with the stretching arms 14, namely, one side of the water filtering support 13 is at least provided with one group of stretching arms 14 and electric shears 15, the stretching arms 14 can drive the electric shears 15 to move upwards, downwards, forwards and backwards, and the electric shears 15 can cut long sections from food materials into small sections.

The drainage box 16 is arranged below the water filtering support 13, the drainage box 16 receives vegetable washing water above the drainage box, when the water filtering device is used, the drainage box 16 is communicated with a drainage pipeline of a kitchen, and after the electric valve 17 in the drainage box 16 is opened, the vegetable washing water in the drainage box can be directly drained into a sewer pipeline.

In order to improve the utilization rate of water resources, a water circulation system is established between the drainage tank 16 and the water storage tank 12 by the water suction pump 18 and the water delivery conduit 19, after the electric valve 17 in the drainage tank 16 is closed, the vegetable washing water in the drainage tank 16 can be transferred into the water storage tank 12 by the water suction pump 18, and the washing device 7 can reuse the vegetable washing water to wash food materials.

Example two

As shown in fig. 4, the present embodiment provides a working method of an intelligent food material cleaning device, including the following working steps:

s101: the processing unit 2 outputs a first opening signal to the driving unit 3, the driving unit 3 drives the first electric door 10 to open, after a user puts food materials into the electric roller 6, the processing unit 2 outputs a first closing signal to the driving unit 3, and the driving unit 3 drives the first electric door 10 to close;

s102: the processing unit 2 outputs a rolling signal to the driving unit 3, and the driving unit 3 drives the motorized pulley 6 to start;

s103: the processing unit 2 outputs a flushing signal to the driving unit 3, and the driving unit 3 drives the flushing device 7 to start;

s104: the processing unit 2 outputs a second opening signal to the driving unit 3, the driving unit 3 drives the second electric door 11 to open, food materials in the electric drum 6 fall on the water filtering bracket 13 below the electric drum, the processing unit 2 outputs a second closing signal to the driving unit 3, and the driving unit 3 drives the second electric door 11 to close;

s105: the processing unit 2 outputs a cutting signal to the driving unit 3, the driving unit 3 moves the flexible arm 14 to stretch the food material on the water filtering bracket 13, and then the electric scissors 15 are driven to divide the food material into a plurality of small segments.

As shown in fig. 5, S102 further includes:

the shell 1 is provided with a parameter input panel, the processing unit 2 obtains the food material type set by a user, extracts the rotating speed corresponding to the food material type from the storage unit 4, and controls the electric roller 6 to operate at the rotating speed.

S101 further includes:

the camera device 21 acquires the food material image put in the electric roller 6 and sends the image to the processing unit 2;

the processing unit 2 automatically analyzes the type of food material.

Specifically, a parameter input panel is arranged outside the housing 1, letter and number keys and a plurality of control switches are arranged on the parameter input panel, and the parameter input panel is connected with the processing unit 2 and used for sending an operation instruction of a user to the processing unit 2.

In S101, when the food material is cleaned, a user clicks a first opening button on the parameter input panel, the processing unit 2 controls the first electric door body 10 to be opened through the driving unit 3, the user can place the food material to be cleaned into the electric roller 6, and the second opening portion 8 of the electric roller 6 is arranged to be of a bell-mouth structure, so that the food material placed into the electric roller 6 is more difficult to throw out from the second opening portion 8 under the action of centrifugal force.

After all food materials are put in the food materials, a user clicks a first closing button on the parameter input panel, and the processing unit 2 controls the first electric door body 10 to be closed through the driving unit 3.

The user can only put in the same food material or food materials with similar types in each cleaning process, the name/type and the weight of the food materials are input on the parameter input panel, and the processing unit 2 sets a cleaning scheme after receiving the name/type and the weight of the food materials.

The storage unit 4 is internally provided with corresponding relations among the types of food materials, the weight of the food materials, the rotating speed of the electric roller 6 and the water consumption of the washing device 7, the water spraying speed of the washing device 7 is constant, the washing time can be determined based on the water consumption, and the working time of the washing device 7 is the same as that of the electric roller 6.

In step S102, after the first electric door 10 is closed, the cleaning device starts a process of automatically cleaning food.

The processing unit 2 sets the working time of the electric roller 6 and the washing device 7, the processing unit 2 controls the electric roller 6 to start through the driving unit 3, and the electric roller 6 is automatically shut down when the time comes.

At S103, the processing unit 2 controls the flushing device 7 to start through the driving unit 3, and the flushing device 7 is automatically turned off at that time.

In S104, after the electric drum 6 and the washing device 7 are both shut down, the processing unit 2 controls the second electric door 11 to open through the driving unit 3, at this time, the food material in the electric drum 6 falls down onto the water filtering bracket 13, the redundant vegetable washing water on the food material falls down, and after 30 seconds, the processing unit 2 controls the second electric door 11 to close through the driving unit 3.

In S105, the processing unit 2 controls the bending and stretching arm 14 to approach the food material on the water filtering bracket 13 through the driving unit 3, then controls the electric shears 15 through the driving unit 3 to shear the food material into a plurality of small segments, and then retracts the bending and stretching arm 14 and the electric shears 15.

If the user does not input the food material name, when the user puts the food material into the electric drum 6, the image of the food material is acquired by the image pickup device 21 and sent to the processing unit 2, and the processing unit 2 can automatically analyze the type of the food material.

EXAMPLE III

As shown in fig. 6, S103 further includes:

the processing unit 2 outputs a third opening signal to the driving unit 3, and the driving unit 3 drives the electric valve 17 to open.

The electric roller 6 and the flushing device 7 are started at the same time, and are automatically closed when the time is up, when the flushing progress reaches 80%, the processing unit 2 outputs a third closing signal to the driving unit 3, and the driving unit 3 drives the electric valve 17 to close;

the processing unit 2 outputs a circulation signal to the driving unit 3, and the driving unit 3 drives the water suction pump 18 to start.

Specifically, when the flushing device 7 is started, the processing unit 2 controls the electric valve 17 to be opened through the driving unit 3, the vegetable washing water finally flows into the drainage tank 16 in the shell 1, and the vegetable washing water in the drainage tank 16 is drained into the sewer pipe.

In order to provide the utilization ratio of water resource, this embodiment washes the remaining comparatively clean vegetable washing water reuse of edible material with the later stage, and processing unit 2 certainly beginning timing when washing unit 7 starts, when the timing is long to reach 80% of the total work duration, processing unit 2 passes through drive unit 3 closes electric valve 17, and at this moment, the vegetable washing water will be saved in drainage box 16, processing unit 2 rethread drive unit 3 control suction pump 18 starts, the vegetable washing water that suction pump 18 will drain box 16 shifts to in the water storage box 12, the vegetable washing water can use repeatedly.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.