阅读说明：本技术 设备稳态运行控制方法、装置、存储介质和系统 (Equipment steady state operational control method, device, storage medium and system ) 是由 周亚 杨文军 周宏宇 张勇 邓志扬 于 2019-08-23 设计创作，主要内容包括：本申请涉及一种设备稳态运行控制方法、装置、存储介质和系统,在根据设备的运行参数检测到设备的机组待进入正常运行状态时,控制机组按照预设的初始频率运行；在检测到机组按照预设的初始频率运行第一预设时长后,获取机组的频率控制参数,根据频率控制参数得到对应的稳定频率；根据稳定频率控制机组的频率由预设的初始频率调至稳定频率运行。当机组开启进入正常运行第一预设时长后设备运行逐渐稳定时,根据获取到的频率控制参数得到对应的稳定频率作为机组的目标频率,稳定频率由实时获取到的频率控制参数对应得到,控制机组快速由初始频率调至目标频率,进而促使设备快速达到稳定状态,使设备迅速进入最优状态,提升机组的性能和可靠性。(This application involves a kind of equipment steady state operational control method, device, storage medium and system, according to the unit of the operational parameter detection of equipment to equipment, when entering normal operating condition, control unit is run according to preset original frequency；After detecting that unit runs the first preset duration according to preset original frequency, the frequency control parameters of unit are obtained, obtain corresponding stable frequency according to frequency control parameters；Stable frequency operation is adjusted to by preset original frequency according to the frequency that stable frequency controls unit.When equipment operation is gradually stable after unit turns on into and operates normally the first preset duration, target frequency of the corresponding stable frequency as unit is obtained according to the frequency control parameters got, stable frequency is obtained by the frequency control parameters correspondence got in real time, control unit is quickly adjusted to target frequency by original frequency, and then equipment is promoted to be rapidly achieved stable state, so that equipment is quickly entered optimum state, promotes the Performance And Reliability of unit.)

1. a kind of equipment steady state operational control method, which comprises

In the unit according to the operational parameter detection of equipment to equipment when entering normal operating condition, control the unit according to Preset original frequency operation；

After detecting that the unit runs the first preset duration according to preset original frequency, the frequency control ginseng of unit is obtained Number, obtains corresponding stable frequency according to the frequency control parameters；

The stable frequency is adjusted to by preset original frequency according to the frequency that the stable frequency controls unit to run.

2. the method according to claim 1, wherein it is described obtained according to the frequency control parameters it is corresponding steady Determine frequency, comprising:

The corresponding section of the frequency control parameters is determined according to the frequency control parameters；

Stable frequency is obtained according to the corresponding relationship in the section and preset section and stable frequency.

3. the method according to claim 1, wherein it is machine that the unit of the equipment, which waits entering normal operating condition, Group booting or unit exit defrost pattern.

4. the method according to claim 1, wherein it is described according to the stable frequency control unit frequency by Preset original frequency is adjusted to after the stable frequency operation, comprising:

After detecting that unit runs the second preset duration with the stable frequency, the degree of superheat of unit is obtained；

According to the frequency of the degree of superheat of the unit and preset target superheat degree control adjustment unit；

When changing value of the frequency for detecting unit in preset duration is less than preset threshold, the unit is controlled with current frequency Rate operation.

5. the method according to claim 1, wherein it is described according to the stable frequency control unit frequency by Preset original frequency is adjusted to after the stable frequency operation, comprising:

After detecting unit operation third preset duration, current frequency control parameter and current frequency are obtained；

Obtain the corresponding section of the current frequency control parameter；

The corresponding stable frequency in the section is updated according to the current frequency.

6. the method according to claim 1, wherein the frequency of the unit include electric expansion valve step number, The frequency of compressor and the frequency of blower.

7. the method according to claim 1, wherein the frequency control parameters include environment temperature and water inlet temperature Degree.

8. a kind of equipment steady-state operation control device, which is characterized in that described device includes:

Original frequency runs module, for waiting entering normal operation shape in the unit of operational parameter detection to equipment according to equipment When state, controls the unit and run according to preset original frequency；

Stable frequency determining module, for detecting the unit according to preset original frequency the first preset duration of operation Afterwards, the frequency control parameters for obtaining unit obtain corresponding stable frequency according to the frequency control parameters；

Control module, the frequency for controlling unit according to the stable frequency are adjusted to the stable frequency by preset original frequency Rate operation.

9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt It realizes when processor executes such as the step of any one of claims 1 to 7 the method.

10. a kind of equipment stable operation control system, which is characterized in that including sensor module and controller, the sensor Component connects the controller,

The sensor module obtains frequency control parameters and is sent to the controller for detecting；

The controller controls the frequency of unit by preset first for method according to any one of claim 1 to 7 Beginning frequency is adjusted to the stable frequency operation.

Technical field

This application involves equipment control technology fields, more particularly to a kind of equipment steady state operational control method, device, deposit Storage media and system.

Background technique

In frequency conversion equipment unit, it usually needs operate in unit under stable frequency so that equipment is in constant duty Lower stable operation meets dynamic equilibrium of the unit under different operating conditions and adjusts, and then guarantees unit durability and reliability.

And the stable frequency of traditional frequency conversion equipment unit is usually the frequency of system included fixation when dispatching from the factory, not necessarily Meet the needs of stable operation of unit under certain operating conditions, and the setting of unit original frequency does not consider unit frequency control ginseng usually Number often only considers the reliability index that must satisfy when unit is switched under the operating condition, in addition, when the initial frequency of unit operation When rate and stable frequency are inconsistent, unit needs longer period of time adjusting to can be only achieved stable state after operation, this can make System enters optimum state compared with slow-motion, causes the Performance And Reliability of frequency conversion equipment low.

Summary of the invention

Based on this, it is necessary to for the low technical problem of the Performance And Reliability of traditional frequency conversion equipment, provide one kind and mention Equipment steady state operational control method, device, storage medium and the system of high frequency conversion equipment Performance And Reliability.

A kind of equipment steady state operational control method, method include:

In the unit according to the operational parameter detection of equipment to equipment when entering normal operating condition, control unit according to Preset original frequency operation；

After detecting that unit runs the first preset duration according to preset original frequency, the frequency control ginseng of unit is obtained Number, obtains corresponding stable frequency according to frequency control parameters；

Stable frequency operation is adjusted to by preset original frequency according to the frequency that stable frequency controls unit.

Corresponding stable frequency is obtained according to frequency control parameters in one of the embodiments, comprising:

The corresponding section of frequency control parameters is determined according to frequency control parameters；

Stable frequency is obtained according to the corresponding relationship in section and preset section and stable frequency.

It is unit booting or exiting of unit that the unit of equipment, which waits entering normal operating condition, in one of the embodiments, White mode.

It is adjusted to stablize by preset original frequency according to the frequency that stable frequency controls unit in one of the embodiments, After frequency operation, comprising:

After detecting that unit runs the second preset duration with stable frequency, the degree of superheat of unit is obtained；

According to the frequency of the degree of superheat of unit and preset target superheat degree control adjustment unit；

When changing value of the frequency for detecting unit in preset duration is less than preset threshold, unit is controlled with current frequency Rate operation.

It is adjusted to stablize by preset original frequency according to the frequency that stable frequency controls unit in one of the embodiments, After frequency operation, comprising:

After detecting unit operation third preset duration, current frequency control parameter and current frequency are obtained；

Obtain the corresponding section of current frequency control parameter；

The corresponding stable frequency in section is updated according to current frequency.

The frequency of unit includes the step number of electric expansion valve, the frequency of compressor and blower in one of the embodiments, Frequency.

Frequency control parameters include environment temperature and inflow temperature in one of the embodiments,.

A kind of equipment steady-state operation control device, device include:

Original frequency runs module, for waiting entering normal fortune in the unit of operational parameter detection to equipment according to equipment When row state, control unit is run according to preset original frequency；

Stable frequency determining module, for detecting unit according to preset original frequency the first preset duration of operation Afterwards, the frequency control parameters for obtaining unit obtain corresponding stable frequency according to frequency control parameters；

Control module, the frequency for controlling unit according to stable frequency are adjusted to stable frequency fortune by preset original frequency Row.

A kind of computer readable storage medium is stored thereon with computer program, when computer program is executed by processor It performs the steps of

In the unit according to the operational parameter detection of equipment to equipment when entering normal operating condition, control unit according to Preset original frequency operation；

After detecting that unit runs the first preset duration according to preset original frequency, the frequency control ginseng of unit is obtained Number, obtains corresponding stable frequency according to frequency control parameters；

Stable frequency operation is adjusted to by preset original frequency according to the frequency that stable frequency controls unit.

A kind of equipment stable operation control system, including sensor module and controller, sensor module connect controller,

Sensor module obtains frequency control parameters and is sent to controller for detecting；

Controller is used to be adjusted to stable frequency fortune by preset original frequency according to the frequency of above-mentioned method control unit Row.

Above equipment steady state operational control method, device, storage medium and system, in the operational parameter detection according to equipment To equipment unit wait enter normal operating condition when, control unit run according to preset original frequency；Detecting unit After running the first preset duration according to preset original frequency, the frequency control parameters of unit are obtained, according to frequency control parameters Obtain corresponding stable frequency；Stable frequency fortune is adjusted to by preset original frequency according to the frequency that stable frequency controls unit Row.When equipment operation is gradually stable after unit turns on into and operates normally the first preset duration, according to the frequency control got Parameter processed obtains target frequency of the corresponding stable frequency as unit, and stable frequency is by the frequency control parameters that get in real time Correspondence obtains, and control unit is quickly adjusted to target frequency by original frequency, and then equipment is promoted to be rapidly achieved stable state, makes to set It is standby to quickly enter optimum state, promote the Performance And Reliability of unit.

Detailed description of the invention

Fig. 1 is equipment steady state operational control method flow chart in one embodiment；

Fig. 2 is equipment steady state operational control method flow chart in another embodiment；

Fig. 3 is equipment steady state operational control method flow chart in another embodiment；

Fig. 4 is equipment steady-state operation control device structural block diagram in one embodiment；

Fig. 5 is equipment steady-state operation Control system architecture block diagram in one embodiment.

Specific embodiment

It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not For limiting the application.

In one embodiment, it as shown in Figure 1, providing a kind of equipment steady state operational control method, applies in this way It is illustrated for controller, comprising the following steps:

Step S110: in the unit according to the operational parameter detection of equipment to equipment when entering normal operating condition, control Unit processed is run according to preset original frequency.

Specifically, in the present embodiment, equipment be heat pump or air-conditioning, the operating parameter of real-time watch device, unit it is every One operating status can all be obtained by the determination of the operating parameter of equipment, wait entering to unit when according to the operational parameter detection of equipment When normal operating condition, in general, it is that unit booting or unit exit defrost pattern, i.e. machine that unit, which waits entering normal operating condition, Group switchs to normal operation mode by other modes, combines unit control logic to find the preset original frequency under the operating condition first It brings into operation, in general, the setting of original frequency often only considers the reliability that must satisfy when unit is switched under the operating condition Index.

Step S120: after detecting that unit runs the first preset duration according to preset original frequency, unit is obtained Frequency control parameters obtain corresponding stable frequency according to frequency control parameters.

Specifically, after unit runs the first preset duration, that is, time interval t1 according to preset original frequency, unit Operating status is relatively stable, obtains the frequency control parameters of unit at this time, in the present embodiment, frequency control parameters include environment Temperature and inflow temperature, unit include electric expansion valve, compressor and blower, are obtained from database according to frequency control parameters Corresponding stable frequency, unit is included when corresponding stable frequency value is factory in database, and that stable frequency characterizes system is steady The frequency of corresponding unit when running surely is provided with the corresponding relationship of frequency control parameters and stable frequency in database, at this In embodiment, it is provided with the corresponding relationship of environment temperature, inflow temperature and stable frequency, it, can after determining frequency control parameters The stable frequency of unit is obtained by database correspondence.

Step S130: stable frequency operation is adjusted to by preset original frequency according to the frequency that stable frequency controls unit.

Specifically, in the present embodiment, the frequency of unit includes the step number of electric expansion valve, the frequency of compressor and blower Frequency.After obtaining the stable frequency of unit, under the premise of not influencing unit reliability and stability, by specific quick Method turns the frequency of unit by preset original frequency to stable frequency, in the present embodiment, by the frequency for limiting unit It is beaten by preset original frequency to the time of stable frequency, i.e., the frequency of control unit is in preset time threshold by preset Original frequency is beaten to stable frequency, wherein preset time threshold is far below the time of traditional adjusting method, it will be understood that When the difference of preset original frequency and stable frequency is big, corresponding control and regulation amplitude is big, when preset original frequency and surely Determine the difference hour of frequency, corresponding control and regulation amplitude is small, and entire adjustment process need to be completed in preset time threshold, can also To be the step number of electric expansion valve is directly adjusted to stable step number, the frequency of compressor to be adjusted to stable frequency and by wind The frequency of machine is adjusted to stable frequency.

Above equipment steady state operational control method, equipment is run after unit, which turns on into, operates normally the first preset duration When gradually stable, target frequency of the corresponding stable frequency as unit is obtained according to the frequency control parameters got, is stablized Frequency is obtained by the frequency control parameters correspondence got in real time, and control unit is quickly adjusted to target frequency by original frequency, into And equipment is promoted to be rapidly achieved stable state, so that equipment is quickly entered optimum state, promotes the Performance And Reliability of unit.

In one embodiment, as shown in Fig. 2, step S120 includes step S122 and step S124.

Step S122: the corresponding section of frequency control parameters is determined according to frequency control parameters.Step S124: according to section Stable frequency is obtained with the corresponding relationship in preset section and stable frequency.

Specifically, range certain locating for frequency control parameters indicates section, each section is corresponding with one Stable frequency pre-sets the corresponding relationship and section and stable frequency of frequency control parameters and section in the database Between corresponding relationship, in the present embodiment, after determining environment temperature and inflow temperature, according to environment temperature and inflow temperature It determines locating section, can be corresponded to obtain stable frequency according to section.

In one embodiment, after step S130, this method further include: detect unit with stable frequency operation second After preset duration, the degree of superheat of unit is obtained；Unit is adjusted according to the degree of superheat of unit and the control of preset target superheat degree Frequency；When changing value of the frequency for detecting unit in preset duration is less than preset threshold, unit is controlled with current frequency Operation.

Specifically, unit is after running the second preset duration, that is, time interval t2 with stable frequency, in conjunction with parameter, that is, machine The frequency of the degree of superheat control fine tuning unit of group is monitoring machine so that the degree of superheat of unit reaches preset target superheat degree For changing value within a certain error range, expression system reaches final dynamic steady state to the frequency of group in certain time length, control Unit processed is run with current frequency.

In one embodiment, after step S130, this method further include: detecting unit operation third preset duration Afterwards, current frequency control parameter and current frequency are obtained；Obtain the corresponding section of current frequency control parameter；According to current frequency The corresponding stable frequency in section is updated.

Specifically, then after unit runs third preset duration, that is, time interval t3, frequency when obtaining stable state controls ginseng Several and current frequency, i.e., in the present embodiment, ambient temperature value, inflow temperature value, the step of electric expansion valve when obtaining stable state Numerical value, compressor and blower frequency values find database frequency values by environment temperature and inflow temperature, according to current frequency pair The corresponding database frequency values in section are updated, for corresponding stable frequency under the next operating condition.It is appreciated that when first When the secondary control to equipment steady-state operation, unit is carried when corresponding frequency is factory in database, and rear extended meeting is by unit in reality New steady-state value covering after ground operation, that is, corresponding frequency values when stable state after time interval t3.

In a detailed embodiment, for using the unit of electric expansion valve, frequency-changeable compressor, blower, the data Library is used for environment temperature and the corresponding stable frequency of inflow temperature when last stable state, and the database and on-fixed Constant, its meeting incorporation engineering reality and set state remodify covering former stable frequency when stablizing under each operating condition.

As shown in figure 3, when next certain operating condition booting or after exit defrost pattern, unit control logic is combined to find pair first The original frequency answered opens operation；After unit runing time interval t1, environment temperature at this time and inflow temperature are detected, from number Set steady frequency is obtained according to library, under the premise of not influencing unit reliability and stability, unit passes through specific fast method It is adjusted to the stable frequency of unit；Unit is finely tuned after stable frequency runing time interval t2 in conjunction with degree of superheat state modulator The frequency of unit reaches final dynamic steady state；Again after unit runing time interval t3, environment temperature when stable state is obtained Value, inflow temperature value, the step number of electric expansion valve, compressor and blower frequency values, are found by environment temperature and inflow temperature The corresponding frequency values of database, and analog value in database is covered, for corresponding stable frequency under the next operating condition.Wherein, First preset duration, the second preset duration and third preset duration are the time that unit is used for homeostasis, avoid unit frequent Adjust frequency.

Above-mentioned control method makes unit after rigid booting or defrost are exited, and can be controlled according to the frequency got in real time Parameter correspondence obtains stable frequency, and controls unit and be quickly adjusted to stable frequency by original frequency, can be rapidly achieved stable shape State promotes system to quickly enter optimum state, and the performance degradation of equipment when defrost is frequent when making up low temperature promotes the property of unit Can, in unit be finely adjusted in stable frequency operational process to stable frequency, data are covered with finally stable stable frequency The stable frequency of corresponding memory, further improves the reliability of unit in library.

It should be understood that although each step in the flow chart of Fig. 1-3 is successively shown according to the instruction of arrow, These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 1-3 Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately It executes.

In one embodiment, as shown in figure 4, providing a kind of equipment steady-state operation control device, device includes initial Frequency runs module 110, stable frequency determining module 120 and control module 130.

Original frequency operation module 110 is used to wait entering normally in the unit of operational parameter detection to equipment according to equipment When operating status, control unit is run according to preset original frequency；Stable frequency determining module 120 is for detecting unit After running the first preset duration according to preset original frequency, the frequency control parameters of unit are obtained, according to frequency control parameters Obtain corresponding stable frequency；Control module 130 is used to control the frequency of unit by preset original frequency according to stable frequency It is adjusted to stable frequency operation.

In one embodiment, stable frequency determining module includes interval determination unit and stable frequency acquiring unit, area Between determination unit be used to according to frequency control parameters determine the corresponding section of frequency control parameters；Stable frequency acquiring unit is used for Stable frequency is obtained according to the corresponding relationship in section and preset section and stable frequency.

It in one embodiment, include that the degree of superheat obtains module, frequency trim module and operation control after control module Module, the degree of superheat obtain module and are used for after detecting that unit runs the second preset duration with stable frequency, obtain the mistake of unit Temperature；Frequency trim module is used for the frequency according to the degree of superheat of unit and preset target superheat degree control adjustment unit；Fortune Row control module is used for when changing value of the frequency for detecting unit in preset duration is less than preset threshold, control unit with Current frequency operation.

It in one embodiment, include that parameter current obtains module, section obtains module and updates mould after control module Block, parameter current obtain module be used for detect unit operation third preset duration after, obtain current frequency control parameter and Current frequency；Section obtains module for obtaining the corresponding section of current frequency control parameter；Update module is used for according to current Frequency is updated the corresponding stable frequency in section.

Above equipment steady-state operation control device, equipment is run after unit, which turns on into, operates normally the first preset duration When gradually stable, target frequency of the corresponding stable frequency as unit is obtained according to the frequency control parameters got, is stablized Frequency is obtained by the frequency control parameters correspondence got in real time, and control unit is quickly adjusted to target frequency by original frequency, into And equipment is promoted to be rapidly achieved stable state, so that equipment is quickly entered optimum state, promotes the Performance And Reliability of unit.

Specific restriction about equipment steady-state operation control device may refer to control above for equipment steady-state operation The restriction of method, details are not described herein.Modules in above equipment steady-state operation control device can be fully or partially through Software, hardware and combinations thereof are realized.Above-mentioned each module can be embedded in the form of hardware or independently of the place in computer equipment It manages in device, can also be stored in a software form in the memory in computer equipment, in order to which processor calls execution or more The corresponding operation of modules.

In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated Machine program performs the steps of when being executed by processor to be waited entering just in the unit according to operational parameter detection to the equipment of equipment When normal operating status, control unit is run according to preset original frequency；Detecting that unit transports according to preset original frequency After the first preset duration of row, the frequency control parameters of unit are obtained, obtain corresponding stable frequency according to frequency control parameters；Root Stable frequency operation is adjusted to by preset original frequency according to the frequency of stable frequency control unit.

In one embodiment, it also performs the steps of to be controlled according to frequency when computer program is executed by processor and join Number determines the corresponding section of frequency control parameters；Stablized according to the corresponding relationship in section and preset section and stable frequency Frequency.

In one embodiment, also performed the steps of when computer program is executed by processor detect unit with After stable frequency runs the second preset duration, the degree of superheat of unit is obtained；According to the degree of superheat of unit and preset target superheat The frequency of degree control adjustment unit；When changing value of the frequency for detecting unit in preset duration is less than preset threshold, control Unit processed is run with current frequency.

In one embodiment, it is also performed the steps of when computer program is executed by processor and is detecting unit fortune After row third preset duration, current frequency control parameter and current frequency are obtained；Obtain the corresponding area of current frequency control parameter Between；The corresponding stable frequency in section is updated according to current frequency.

Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with Instruct relevant hardware to complete by computer program, computer program to can be stored in a non-volatile computer readable It takes in storage medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, this Shen Please provided by any reference used in each embodiment to memory, storage, database or other media, may each comprise Non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms, Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..

In one embodiment, as shown in figure 5, a kind of equipment stable operation control system, including 210 He of sensor module Controller 220, sensor module 210 connect controller 220, and sensor module 210 obtains frequency control parameters simultaneously for detecting It is sent to controller 220；Controller 220 is used to wait entering normal fortune in the unit of operational parameter detection to equipment according to equipment When row state, control unit is run according to preset original frequency；Detecting unit according to preset original frequency operation the After one preset duration, the frequency control parameters of unit are obtained, obtain corresponding stable frequency according to frequency control parameters；And root Stable frequency operation is adjusted to by preset original frequency according to the frequency of stable frequency control unit.

Specifically, in the present embodiment, sensor module is environment temperature sensor and water temperature sensor, it will be understood that Sensor can be set according to the different adaptability of frequency control parameters.

The specific restriction of equipment stable operation control system may refer to above for equipment control method for stably operating Restriction, details are not described herein.

Above equipment stable operation control system, equipment is run after unit, which turns on into, operates normally the first preset duration When gradually stable, target frequency of the corresponding stable frequency as unit is obtained according to the frequency control parameters got, is stablized Frequency is obtained by the frequency control parameters correspondence got in real time, and control unit is quickly adjusted to target frequency by original frequency, into And equipment is promoted to be rapidly achieved stable state, so that equipment is quickly entered optimum state, promotes the Performance And Reliability of unit.

Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.

Above embodiments only express the several embodiments of the application, and the description thereof is more specific and detailed, but can not Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art, In Under the premise of not departing from the application design, various modifications and improvements can be made, these belong to the protection scope of the application. Therefore, the scope of protection shall be subject to the appended claims for the application patent.