阅读说明：本技术 制冷系统、冰箱及制冷系统的控制方法 (The control method of refrigeration system, refrigerator and refrigeration system ) 是由 辛海亚 梁起 石祎明 于 2019-09-03 设计创作，主要内容包括：本发明涉及一种制冷系统、冰箱及制冷系统的控制方法,包括依次连接形成回路的压缩机、冷凝器、节流机构及蒸发器；制冷系统还包括：加热机构,用于给蒸发器加热除霜；以及支路,一端连接于节流机构与蒸发器之间,另一端与压缩机的回气端连接；其中,当制冷系统处于除霜模式时,加热机构工作,蒸发器与节流机构之间断开,支路打开蒸发器的进口端与压缩机之间的流体连通。在制冷系统处于除霜模式时,蒸发器的进口端通过支路与压缩机连通,此时蒸发器的进口端与压缩机之间无节流元件,因此无压降低,从而促使具有较高温度的制冷剂从蒸发器的进口端与出口端均匀流出,蒸发器的进口端与出口端的温升相当,除霜速度相同,进而除霜均匀性好。(The present invention relates to the control methods of a kind of refrigeration system, refrigerator and refrigeration system, compressor, condenser, throttle mechanism and evaporator including being in turn connected to form circuit；Refrigeration system further include: heating mechanism defrosts for heating to evaporator；And branch, one end are connected between throttle mechanism and evaporator, the air return end connection of the other end and compressor；Wherein, when refrigeration system is in defrosting mode, heating mechanism work, evaporator is separated with throttle mechanism, and branch opens the fluid communication between the input end and compressor of evaporator.When refrigeration system is in defrosting mode, the input end of evaporator is communicated with compressor by branch, at this time without restricting element between the input end and compressor of evaporator, therefore low without pressure drop, to promote the refrigerant with higher temperature uniformly to flow out from the input end of evaporator with outlet end, the input end of evaporator and the temperature rise of outlet end are suitable, and defrosting speed is identical, and then the uniformity that defrosts is good.)

1. a kind of refrigeration system, which is characterized in that compressor (10), condenser (20), section including being in turn connected to form circuit Flow mechanism (30) and evaporator (40)；The refrigeration system further include:

Heating mechanism defrosts for heating to the evaporator (40)；And

Branch (70), one end are connected between the throttle mechanism (30) and the evaporator (40), the other end and the compression The air return end of machine (10) connects；

Wherein, when the refrigeration system is in defrosting mode, the heating mechanism works, the evaporator (40) and the section The separated of mechanism (30) is flowed, the branch (70) is opened between the input end and the compressor (10) of the evaporator (40) Fluid communication.

2. refrigeration system according to claim 1, which is characterized in that the refrigeration system further includes switching mechanism, described Switching mechanism switches under refrigeration mode and the defrosting mode for the refrigeration system；

Wherein, when the refrigeration system is under the refrigeration mode, the switching mechanism makes the evaporator (40) and institute It states and is connected between throttle mechanism (30), the branch (70) disconnects input end and the compressor (10) of the evaporator (40) Between fluid communication.

3. refrigeration system according to claim 2, which is characterized in that the switching mechanism includes triple valve (90), described Triple valve (90) includes the first valve port (91), the second valve port (92) and third valve port (93), first valve port (91) with it is described Throttle mechanism (30) connection, second valve port (92) are connected to the input end of the evaporator (40), the third valve port (93) one end being connected between the throttle mechanism (30) and the evaporator (40) with the branch (70) is connected to；

When the refrigeration system is under the refrigeration mode, first valve port (91) and second valve port (92) are even It is logical；When the refrigeration system is under the defrosting mode, second valve port (92) is connected to the third valve port (93).

4. refrigeration system according to claim 2, which is characterized in that the refrigeration system further includes the first pipeline (110), First pipeline (110) is connected between the throttle mechanism (30) and the evaporator (40), and the one of the branch (70) End is connect with first pipeline (110)；

The switching mechanism includes the first on-off valve and the second on-off valve, and first on-off valve is assemblied in first pipeline (110) on, and it is located at the upstream of the branch (70) and the first pipeline (110) junction, the second on-off valve assembly In on the branch (70)；

When the refrigeration system is under the refrigeration mode, first on-off valve is opened, and second on-off valve is closed； When the refrigeration system is under the defrosting mode, first on-off valve is closed, and second on-off valve is opened.

5. refrigeration system according to claim 1, which is characterized in that the heating mechanism is assemblied in the evaporator (40) On.

6. refrigeration system according to claim 5, which is characterized in that the heating mechanism includes the first heating member and second Heating member, first heating member are set to the top surface of the evaporator (40), and second heating member is set to the evaporation The bottom surface of device (40).

7. refrigeration system according to claim 1, which is characterized in that the refrigeration system further includes the second pipeline (80), Second pipeline (80) is connected between the evaporator (40) and the compressor (10), the other end of the branch (70) It is connect with second pipeline (80).

8. a kind of refrigerator, which is characterized in that including such as described in any item refrigeration systems of claim 1-7, have in the refrigerator There are cool room, the setting of cool room described in the evaporator (40) face of the refrigeration system.

9. refrigerator according to claim 8, which is characterized in that the refrigerator includes ontology and door body, is opened in the ontology Equipped with the accommodating cavity with opening, the door body can be opened and closed to be set to the opening, and the inner wall of the door body and the appearance It sets and defines to form the cool room between the inner wall of chamber；

The refrigeration system further includes anti-condensation pipes (50), and the anti-condensation pipes (50) are connected to the compressor of the refrigeration system (10) between the condenser (20), the anti-condensation pipes (50) are coagulated at the door body and the ontology sealing for preventing Dew.

10. a kind of control method of refrigeration system characterized by comprising

Judge whether refrigeration system is in defrosting mode；

When the refrigeration system is in defrosting mode, control heating mechanism work, evaporator (40) and throttle mechanism (30) it It is separated, and branch (70) opens the fluid communication between the input end and the compressor (10) of the evaporator (40).

11. the control method of refrigeration system according to claim 10, which is characterized in that described at the refrigeration system When defrosting mode, control heating mechanism work, evaporator (40) is separated with throttle mechanism (30), and branch (70) is opened Fluid communication between the input end and the compressor (10) of the evaporator (40) includes:

The second valve port (92) of control triple valve (90) is connected to third valve port (93).

Technical field

The present invention relates to refrigeration technology fields, more particularly to the controlling party of a kind of refrigeration system, refrigerator and refrigeration system Method.

Background technique

With the development of economy and the improvement of people's living standards, requirement of the people to quality of life are also higher and higher.Such as In daily life, it is often necessary to be maintained at food under certain low-temperature condition in order to save, such refrigerator comes into being.

Refrigerator mainly includes direct cooling refrigerator and wind cooling refrigerator, wherein wind cooling refrigerator is fast with cooling rate and temperature is uniform Good characteristic, has obtained relatively broad application.But it is directed to wind cooling refrigerator, evaporator surface is easy to frosting, one side of frosting Face can reduce ventilation area, increase circulating resistance to reduce the heat exchange amount of evaporator and on the other hand increase evaporator With the heat transfer resistance of air, refrigeration performance is reduced.It is seemed very necessary to defrost in time to wind cooling refrigerator.

Refrigeration system used by traditional wind cooling refrigerator, evaporator end and outlet end temperature rise rate are inconsistent, defrosting Uniformity is poor.

Summary of the invention

Based on this, it is necessary to for the problem of conventional refrigeration defrosting uniformity difference, it is good to provide a kind of defrosting uniformity Refrigeration system, the control method of refrigerator and refrigeration system.

A kind of refrigeration system, compressor, condenser, throttle mechanism and evaporator including being in turn connected to form circuit；Institute State refrigeration system further include:

Heating mechanism defrosts for heating to the evaporator；And

Branch, one end are connected between the throttle mechanism and the evaporator, the return-air of the other end and the compressor End connection；

Wherein, when the refrigeration system is in defrosting mode, the heating mechanism works, the evaporator and the section The separated of mechanism is flowed, the branch opens the fluid communication between the input end of the evaporator and the compressor.

The refrigeration system further includes switching mechanism in one of the embodiments, and the switching mechanism is used for the system Cooling system switches under refrigeration mode and the defrosting mode；

Wherein, when the refrigeration system is under the refrigeration mode, between the evaporator and the throttle mechanism Connection, the branch disconnect the fluid communication between the input end of the evaporator and the compressor.

The switching mechanism includes triple valve in one of the embodiments, and the triple valve includes the first valve port, second Valve port and third valve port, first valve port are connected to the throttle mechanism, the import of second valve port and the evaporator End connection, the third valve port are connected to one end that the branch is connected between the throttle mechanism and the evaporator；

When the refrigeration system is under the refrigeration mode, first valve port is connected to second valve port；Work as institute When stating refrigeration system under the defrosting mode, second valve port is connected to the third valve port.

The refrigeration system further includes the first pipeline in one of the embodiments, and first piping connection is in described Between throttle mechanism and the evaporator, one end of the branch and first piping connection；

The switching mechanism includes the first on-off valve and the second on-off valve, and first on-off valve is assemblied in first pipe On the road, and positioned at the upstream of the branch and first line connection, second on-off valve is assemblied in the branch road；

When the refrigeration system is under the refrigeration mode, first on-off valve is opened, and second on-off valve closes It closes；When the refrigeration system is under the defrosting mode, first on-off valve is closed, and second on-off valve is opened.

The heating mechanism is assemblied on the evaporator in one of the embodiments,.

The heating mechanism includes the first heating member and the second heating member of split settings in one of the embodiments, First heating member is set to the top surface of the evaporator, and second heating member is set to the bottom surface of the evaporator.

The refrigeration system further includes the second pipeline in one of the embodiments, and second piping connection is in described Between evaporator and the compressor, the other end of the branch and second piping connection.

A kind of refrigerator, including refrigeration system as described in any one of the above embodiments, the refrigerator is interior to have cool room, the refrigeration The setting of cool room described in the evaporator face of system.

The refrigerator includes ontology and door body in one of the embodiments, is offered in the ontology with opening Accommodating cavity, the door body can be opened and closed to be set to the opening, and between the inner wall of the door body and the inner wall of the accommodating cavity It defines to form the cool room；

The refrigeration system further includes anti-condensation pipes, and the anti-condensation pipes are connected to the compressor and the institute of the refrigeration system It states between condenser, the anti-condensation pipes are for preventing condensation occur at the door body and the ontology sealing.

A kind of control method of refrigeration system, comprising:

Judge whether refrigeration system is in defrosting mode；

When the refrigeration system is in defrosting mode, control heating mechanism work, the interruption of evaporator and throttle mechanism It opens, and branch opens the fluid communication between the input end of the evaporator and the compressor.

It is described when the refrigeration system is in defrosting mode in one of the embodiments, control heating mechanism work, Evaporator is separated with throttle mechanism, and branch opens the company of the fluid between the input end of the evaporator and the compressor It is logical to include:

Second valve port of control triple valve is connected to third valve port.

The control method of above-mentioned refrigeration system, refrigerator and refrigeration system, when refrigeration system is in defrosting mode, evaporator Input end be communicated with compressor by branch, at this time between the input end and compressor of evaporator without restricting element, therefore nothing Pressure drop is low, so that the refrigerant with higher temperature is promoted uniformly to flow out from the input end of evaporator with outlet end, evaporator Input end is suitable with the temperature rise of outlet end, and defrosting speed is identical, and then the uniformity that defrosts is good.

Detailed description of the invention

Fig. 1 is the schematic diagram for the refrigeration system that one embodiment of the invention provides；

Fig. 2 is the flow chart of the control method for the refrigeration system that one embodiment of the invention provides.

40 anti-condensation pipes of refrigeration system 100 compressor, 10 condenser, 20 throttle mechanism, 30 evaporator, 50 filter 60 70 second pipeline of branch, 80 triple valve, 90 first 91 second valve port of valve port, 92 third valve port, 93 first pipeline 110

Specific embodiment

To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough Comprehensively.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases Any and all combinations of the listed item of pass.

Refering to fig. 1, one embodiment of the invention provides a kind of refrigeration system 100, and specifically, which is applied to Refrigerator.It is to be appreciated that the refrigeration system 100 can also be applied in other refrigeration equipments, In in some other embodiment This is not construed as limiting.

Below by taking refrigeration system 100 is applied to refrigerator as an example, technical solution of the present invention is described in detail.This reality It applies example and serves merely as example explanation, be not limiting upon technical scope of the invention.Furthermore the schema in embodiment is also omitted need not Component is wanted, to clearly show that technical characterstic of the invention.

There is in refrigerator cool room, refrigeration system 100 include the compressor 10 for being in turn connected to form circuit, condenser 20, Throttle mechanism 30 and evaporator 40,40 face cool room of the evaporator setting of refrigeration system 100.

When work, compressor 10 forms high temperature and high pressure gas refrigerant after compressing, and high temperature and high pressure gas refrigerant enters condenser In 20, and the heat release in condenser 20, the gaseous coolant of high temperature and pressure become the liquid refrigerants of normal temperature high voltage, the liquid of normal temperature high voltage State refrigerant enters throttle mechanism 30 (capillary, heating power expansion valve or electric expansion valve etc.), is subtracted by the throttling of throttle mechanism 30 Swaging is at low-temp low-pressure liquid refrigerants, and the low-temp low-pressure liquid refrigerants being consequently formed finally enters in evaporator 40, in evaporator Heat absorption evaporation becomes the gaseous coolant of low-temp low-pressure in 40, then sucks compressor 10 again, loops back and forth like this realization to refrigeration The refrigeration effect of room.

Refrigerator includes ontology and door body, and the accommodating cavity with opening is offered in ontology, and door body can be opened and closed to set and be open Place, and define to form cool room between the inner wall of door body and the inner wall of accommodating cavity.

Refrigeration system 100 further includes anti-condensation pipes 50, and anti-condensation pipes 50 are connected between compressor 10 and condenser 20, anti-condensation pipes 50 for preventing condensation occur at door body and ontology sealing.As, when refrigeration system 100 works, shape after compressor 10 compresses Anti-condensation pipes 50 are initially entered to prevent the generation of condensation at high temperature and high pressure gas refrigerant, then flow to condenser 20 from anti-condensation pipes 50 Condensation.

Specifically, refrigeration system 100 further includes filter 60, filter 60 be connected to evaporator 40 and throttle mechanism 30 it Between, filter 60 is used to filter the impurity in the liquid refrigerants for the normal temperature high voltage for flowing to throttle mechanism 30 from condenser 20.

In one embodiment, refrigeration system 100 further includes heating mechanism (not shown), and heating mechanism is used for evaporator 40 heating defrostings.As refrigeration system 100 has refrigeration mode and defrosting mode, under refrigeration system 100 is in refrigeration mode, Compressor 10 works, and when refrigeration system 100 is in defrosting mode, compressor 10 is shut down, and heating mechanism heating evaporation device 40 removes Frost.

Specifically, heating mechanism includes the first heating member of split settings and the second heating member, and the first heating member is set to steaming The top surface of device 40 is sent out, the second heating member is set to the bottom surface of evaporator 40, so guarantees the defrosting effect of refrigeration system 100.It can To understand ground, in further embodiments, heating mechanism can also include third heating member, and third heating member is set to evaporator 40 side, is not limited thereto.

When refrigeration system 100 is in defrosting mode, the low temperature liquid refrigerant in evaporator 40 is deposited in by heating Vaporization divides two-way to flow to compressor 10: 40 input end of a-road-through pervaporation device, throttle mechanism 30 and evaporator 40 after mechanism heats It is back to compressor 10, another way is back to compressor 10 by 40 outlet end of evaporator.

But since throttle mechanism 30 is restricting element in itself, there are certain pressure differences at the both ends of restricting element；And it steams The outlet end for sending out device 40 is not that there are restricting element, no pressure drops.Therefore, the low temperature liquid refrigeration that the input end of evaporator 40 is retained Agent vaporization rate is relatively slow, and the speed for the low temperature liquid refrigerant vaporization that the outlet end of evaporator 40 is retained is relatively fast. The outlet end that the refrigerant with higher temperature formed after vaporization largely passes through evaporator 40 flows to compressor 10, therefore steams Send out device 40 outlet end because have more higher temperature refrigerant flowing defrosting speed it is very fast, thus temperature rise rate compared with Fastly, and the input end defrosting speed of evaporator 40 is slower, so that temperature rise rate is slower, leads to input end and the outlet of evaporator 40 The temperature rise at end is inconsistent, and the uniformity that causes to defrost is poor, and the input end of the evaporator 40 and temperature rise of outlet end is inconsistent can also lead Cause defrosting time fluctuation big, defrosting efficiency is low.

Based on the above issues, refrigeration system 100 further includes branch 70, and one end of branch 70 is connected to throttle mechanism 30 and steams It sends out between device 40, the other end is connect with the air return end of compressor 10.When refrigeration system 100 is in defrosting mode, evaporator 40 Separated with throttle mechanism 30, branch 70 opens the fluid communication between the input end and compressor 10 of evaporator 40.

By above-mentioned setting, when refrigeration system 100 is in defrosting mode, the input end of evaporator 40 by branch 70 with Compressor 10 is connected to, at this time without restricting element between the input end of evaporator 40 and compressor 10, therefore it is low without pressure drop, to promote Flow out the refrigerant with higher temperature uniformly with outlet end from the input end of evaporator 40, the input end of evaporator 40 with go out The temperature rise at mouth end is suitable, and defrosting speed is identical, and then the uniformity that defrosts is good and defrosting efficiency is high.

In one embodiment, refrigeration system 100 further includes the second pipeline 80, the second pipeline 80 be connected to evaporator 40 with Between compressor 10, the other end of branch 70 is connect with the second pipeline 80, and as the other end of branch 70 passes through the second pipeline 80 It is connect with compressor 10.It is to be appreciated that in further embodiments, the other end of branch 70 can also directly with compressor 10 Connection, and the second pipeline 80 is connect by branch 70 with compressor 10, is not limited thereto.

In one embodiment, refrigeration system 100 further includes switching mechanism (not shown), and switching mechanism is used for refrigeration system 100 switch under refrigeration mode and defrosting mode.When wherein, under refrigeration system 100 is in refrigeration mode, switching mechanism makes to steam It is connected between hair device 40 and throttle mechanism 30, branch 70 disconnects the fluid between the input end and compressor 10 of evaporator 40 and connects It is logical；When refrigeration system 100 is under defrosting mode, switching mechanism makes separated, branch of the evaporator 40 with throttle mechanism 30 70 open the fluid communication between the input end and compressor 10 of evaporator 40.

Specifically, switching mechanism includes triple valve 90, and triple valve 90 includes the first valve port 91, the second valve port 92 and third valve Mouthfuls 93, the first valve port 91 is connected to throttle mechanism 30, and the second valve port 92 is connected to the input end of evaporator 40, third valve port 93 and One end that branch 70 is connected between throttle mechanism 30 and evaporator 40 is connected to.When under refrigeration system 100 is in refrigeration mode, First valve port 91 is connected to the second valve port 92, when refrigeration system 100 is under defrosting mode, the second valve port 92 and third valve port 93 connections.

As, when under refrigeration system 100 is in refrigeration mode, the first valve port 91 of triple valve 90 and the second valve port 92 connect It is logical, it is disconnected between third valve port 93 and the first valve port 91 and the second valve port 92.At this point, refrigerant followed by compressor 10, Anti-condensation pipes 50, evaporator 40, filter 60, throttle mechanism 30, triple valve 90, evaporator 40 and the second pipeline 80, then flow back To compressor 10, complete refrigeration cycle.

When refrigeration system 100 is under defrosting mode, the second valve port 92 of triple valve 90 is connected to third valve port 93, the It is disconnected between one valve port 91 and the second valve port 92 and third valve port 93.At this point, being deposited in the low temperature liquid system in evaporator 40 Cryogen vaporizes after heating mechanism heats divides two-way to flow to compressor 10: the input end of a-road-through pervaporation device 40 enters threeway Second valve port 92 of valve 90, and enter third valve port 93 from the second valve port 92, pressure is back to from third valve port 93 into branch 70 Contracting machine 10, another way are back to compressor 10 by the outlet end of evaporator 40.

Since the outlet end of evaporator 40 and input end do not have restricting element, no pressure drop, to promote to have higher The refrigerant of temperature is uniformly flowed out from the input end of evaporator 40 with outlet end, the input end of evaporator 40 and the temperature rise of outlet end Quite, defrosting speed is identical, and then the uniformity that defrosts is good.

In another embodiment, refrigeration system 100 further includes the first pipeline 110, and the first pipeline 110 is connected to throttling machine Between structure 30 and evaporator 40, one end of branch 70 is connect with the first pipeline 110.Specifically, switching mechanism includes the first on-off Valve and the second on-off valve, the first on-off valve are assemblied on the first pipeline 110, and are located at 110 junction of branch 70 and the first pipeline Upstream, the second on-off valve is assemblied on branch 70.

When under refrigeration system 100 is in refrigeration mode, the first on-off valve is opened, and the second on-off valve is closed；When refrigeration is When system 100 is under defrosting mode, the first on-off valve is closed, and the second on-off valve is opened.

When under refrigeration system 100 is in refrigeration mode, since the first on-off valve is opened, the second on-off valve is closed, at this time Refrigerant is followed by compressor 10, anti-condensation pipes 50, evaporator 40, filter 60, throttle mechanism 30, triple valve 90, evaporator 40 and second pipeline 80, then it is back to compressor 10, complete refrigeration cycle.

When refrigeration system 100 is under defrosting mode, since the first on-off valve is closed, the second on-off valve is opened, at this point, The low temperature liquid refrigerant being deposited in evaporator 40 vaporizes after heating mechanism heats divides two-way to flow to compressor 10: all the way Enter the second valve port 92 of triple valve 90 by the input end of evaporator 40, and enters third valve port 93 from the second valve port 92, from Third valve port 93 is back to compressor 10 into branch 70, and another way is back to compressor 10 by the outlet end of evaporator 40.

Since the outlet end of evaporator 40 and input end do not have restricting element, no pressure drop, to promote to have higher The refrigerant of temperature is uniformly flowed out from the input end of evaporator 40 with outlet end, the input end of evaporator 40 and the temperature rise of outlet end Quite, defrosting speed is identical, and then the uniformity that defrosts is good.

Another embodiment of the present invention also provides a kind of refrigerator including above-mentioned refrigeration system 100.

Referring to Fig.2, further embodiment of this invention also provides a kind of control method of refrigeration system 100, comprising:

S110: judge refrigeration system 100 whether in defrosting mode；

S120: when refrigeration system 100 is in defrosting mode, control heating mechanism works, evaporator 40 and throttle mechanism 30 it is separated, and branch 70 open evaporator 40 input end and compressor 10 between fluid communication.

When refrigeration system 100 is in defrosting mode, the input end of evaporator 40 is connected to by branch 70 with compressor 10, At this time without restricting element between the input end of evaporator 40 and compressor 10, thus it is low without pressure drop, to promote with higher temperatures The refrigerant of degree is uniformly flowed out from the input end of evaporator 40 with outlet end, the input end and the temperature rise phase of outlet end of evaporator 40 When defrosting speed is identical, and then the uniformity that defrosts is good.

Specifically, step S120 includes:

Second valve port 92 of control triple valve 90 is connected to third valve port 93.

When the second valve port 92 of triple valve 90 is connected to third valve port 93, branch 70 can be promoted to open evaporator 40 Fluid communication between input end and compressor 10, to make between the input end of evaporator 40 and compressor 10 without throttling member Part, so that the refrigerant with higher temperature is uniformly flowed out from the input end of evaporator 40 with outlet end, the import of evaporator 40 End is suitable with the temperature rise of outlet end, and defrosting speed is identical, and then the uniformity that defrosts is good.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.