CN109915991A - The control method and device of multi-line system blowout prevention enthalpy valve body blocking - Google Patents
The control method and device of multi-line system blowout prevention enthalpy valve body blocking Download PDFInfo
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Abstract
The present invention proposes the control method and device of a kind of multi-line system blowout prevention enthalpy valve body blocking, wherein, spray enthalpy valve body includes: to spray enthalpy solenoid valve, bypass solenoid valve and cross cold plate to change electric expansion valve, if method includes: multi-line system starting, controls spray enthalpy solenoid valve and opens；Obtain the discharge superheat of multi-line system；Obtained the control instruction that cold plate changes electric expansion valve, wherein control instruction includes out code and open command；According to the control instruction that the discharge superheat of multi-line system and excessively cold plate change electric expansion valve, spray enthalpy valve body is adjusted.As a result, according to the discharge superheat of multi-line system and different control instructions, the spray enthalpy valve body of multi-line system is adjusted, avoids multi-line system spray enthalpy valve body blocking, thus, the performance of multi-line system is promoted, and improve the reliability of multi-line system.
Description
Technical field
The present invention relates to a kind of controlling parties of the blowout prevention enthalpy valve body of air-conditioning technical field more particularly to multi-line system blocking
A kind of control device of the blowout prevention enthalpy valve body of method and multi-line system blocking.
Background technique
Currently, market in order to solve low-temperature heating effect and improve refrigeration cycle refrigerating capacity and the coefficient of performance, to more
On-line system compressor increases air injection enthalpy-increasing, can achieve and improves heating effect etc..
But as spray enthalpy multi-connected machine application scenarios are gradually extensive, which also exposes some problems, for example, when spray enthalpy
Pipe structure is directly and when cold plate commutation connects excessively, at this point, spraying enthalpy valve if control panel changes electric expansion valve closing and being likely to occur high pressure
The problems such as refrigerant pipeline blocks, thus, influence the reliability of multi-line system.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
First purpose is to propose a kind of control method of multi-line system blowout prevention enthalpy valve body blocking, can be avoided multi-line system and spray
The blocking of enthalpy valve body, thus, the performance of multi-line system is promoted, and improve the reliability of multi-line system.
Second object of the present invention is to propose a kind of control device of multi-line system blowout prevention enthalpy valve body blocking.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of multi-line system blowout prevention enthalpy valve body blocking
Control method, wherein the spray enthalpy valve body include: spray enthalpy solenoid valve, bypass solenoid valve and cross cold plate change electric expansion valve, institute
If the method for stating includes: the multi-line system starting, controls the spray enthalpy solenoid valve and open；It obtains the cold plate of crossing and changes electronics
The control instruction of expansion valve, wherein the control instruction includes out code and open command；Obtain the multi-line system
Discharge superheat；The discharge superheat of the control instruction and the multi-line system of electric expansion valve is changed according to the cold plate excessively,
The spray enthalpy valve body is adjusted.
The control method of multi-line system blowout prevention enthalpy valve body blocking according to an embodiment of the present invention, if multi-line system opens
It is dynamic, then it controls spray enthalpy solenoid valve and opens, and obtained the control instruction that cold plate changes electric expansion valve, wherein control instruction includes
Out code and open command, and the discharge superheat of multi-line system is obtained, in turn, according to the exhaust of multi-line system
Temperature changes the control instruction of electric expansion valve with cold plate is crossed, and is adjusted to spray enthalpy valve body.As a result, according to different control instructions
With the discharge superheat of multi-line system, the spray enthalpy valve body of multi-line system is adjusted, multi-line system is avoided to spray enthalpy valve
Body blocking, thus, the performance of multi-line system is promoted, and improve the reliability of multi-line system.
In addition, the control method of multi-line system blowout prevention enthalpy valve body blocking according to the above embodiment of the present invention can also have
There is following additional technical characteristic:
According to one embodiment of present invention, the discharge superheat and the cold plate excessively according to the multi-line system
The control instruction for changing electric expansion valve is adjusted the spray enthalpy valve body, comprising: if the control instruction is that the closing refers to
It enables, then first opens the bypass solenoid valve, turn off the cold plate of crossing and change electric expansion valve；If the exhaust of the multi-line system
The degree of superheat is greater than the first temperature threshold, then controls the bypass solenoid valve and restore to work normally；If the row of the multi-line system
The gas degree of superheat is less than or equal to second temperature threshold value, and continues the first preset time, alternatively, the exhaust of the multi-line system
Temperature is less than third temperature threshold, and continues the second preset time, then controls the bypass solenoid valve and close, wherein described the
One temperature threshold is greater than the second temperature threshold value, and the second temperature threshold value is greater than the third temperature threshold.
According to one embodiment of present invention, the discharge superheat and the cold plate excessively according to the multi-line system
The control instruction for changing electric expansion valve is adjusted the spray enthalpy valve body, further includes: if the control instruction is the unlatching
Instruction, then after the third preset time that is delayed, the cold plate plate of crossing for obtaining the multi-line system changes the degree of superheat；If described multi-joint
The cold plate plate of crossing of machine system changes the degree of superheat less than or equal to the 4th temperature threshold, and continues the 4th preset time, and described multi-joint
The discharge superheat of machine system is less than the third temperature threshold, then controls the spray enthalpy solenoid valve and close.
According to one embodiment of present invention, if the multi-line system starts, the spray enthalpy solenoid valve is controlled
After unlatching, further includes: obtain the state crossed cold plate and change electric expansion valve；If the shape crossed cold plate and change electric expansion valve
State is open state, then the cold plate plate of crossing for obtaining the multi-line system changes the degree of superheat；If the multi-line system crosses cold plate
Plate changes the degree of superheat less than or equal to the 4th temperature threshold, and continues the 4th preset time, and the exhaust of the multi-line system
Temperature is less than third temperature threshold, then controls the spray enthalpy solenoid valve and close.
According to one embodiment of present invention, after the control spray enthalpy solenoid valve is closed, comprising: obtain described more
The state of the spray enthalpy solenoid valve of on-line system；If the valve body that the state of the spray enthalpy solenoid valve of the multi-line system is in off state
Number is greater than or equal to two, then controls the bypass solenoid valve and close.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of multi-line system blowout prevention enthalpy valve body blocking
Control device, wherein the spray enthalpy valve body include: spray enthalpy solenoid valve, bypass solenoid valve and cross cold plate change electric expansion valve, institute
Stating device includes: the first acquisition module, for obtaining the control instruction crossed cold plate and change electric expansion valve, wherein the control
System instruction includes out code and open command；Second obtains module, for obtaining the discharge superheat of the multi-line system；
Control module crosses cold plate for when multi-line system starting, controlling the spray enthalpy solenoid valve unlatching, and according to described
The control instruction of electric expansion valve and the discharge superheat of the multi-line system are changed, the spray enthalpy valve body is adjusted.
The control device of multi-line system blowout prevention enthalpy valve body blocking according to an embodiment of the present invention, obtains module by first
Obtained the control instruction that cold plate changes electric expansion valve, wherein control instruction includes out code and open command, and passes through the
Two obtain the discharge superheat that module obtains multi-line system, thus, when multi-line system starting, controlled by control module
It sprays enthalpy solenoid valve to open, and changes the control instruction of electric expansion valve according to the discharge superheat and mistake cold plate of multi-line system,
Spray enthalpy valve body is adjusted.As a result, according to the discharge superheat of different control instruction and multi-line system, to multi-connected machine system
The spray enthalpy valve body of system is adjusted, and avoids multi-line system spray enthalpy valve body blocking, thus, the performance of multi-line system is promoted, and
Improve the reliability of multi-line system.
In addition, the control device of multi-line system blowout prevention enthalpy valve body blocking according to the above embodiment of the present invention can also have
There is following additional technical characteristic:
According to one embodiment of present invention, the control module is also used to: when the control instruction is that the closing refers to
When enabling, the bypass solenoid valve is first opened, the cold plate of crossing is turned off and changes electric expansion valve；When the exhaust of the multi-line system
When the degree of superheat is greater than the first temperature threshold, controls the bypass solenoid valve and restore to work normally；As the row of the multi-line system
The gas degree of superheat is less than or equal to second temperature threshold value, and continues the first preset time, alternatively, the exhaust of the multi-line system
Temperature is less than third temperature threshold, and when continuing the second preset time, controls the bypass solenoid valve and closes, wherein described the
One temperature threshold is greater than the second temperature threshold value, and the second temperature threshold value is greater than the third temperature threshold.
According to one embodiment of present invention, the second acquisition module is also used to: when the control instruction is described opens
When opening instruction, after the third preset time that is delayed, the cold plate plate of crossing for obtaining the multi-line system changes the degree of superheat；The control
Module is also used to: when the cold plate plate of crossing of the multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold, and continuing the
Four preset times, and when the discharge superheat of the multi-line system is less than the third temperature threshold, it is electric to control the spray enthalpy
Magnet valve is closed.
According to one embodiment of present invention, described device further include: third obtains module；The third obtains module and uses
In the acquisition state crossed cold plate and change electric expansion valve；The second acquisition module is also used to, when the cold plate of crossing changes electronics
When the state of expansion valve is open state, the cold plate plate of crossing for obtaining the multi-line system changes the degree of superheat；The control module is also
For being less than or equal to the 4th temperature threshold when the cold plate plate excessively of the multi-line system changes the degree of superheat, and it is default to continue the 4th
Time, and when the discharge superheat of the multi-line system is less than third temperature threshold, control spray enthalpy solenoid valve closing.
According to one embodiment of present invention, the third obtains module and is also used to: obtaining the spray of the multi-line system
The state of enthalpy solenoid valve；The control module is also used to, when the state of the spray enthalpy solenoid valve of the multi-line system is to close shape
When the valve body number of state is greater than or equal to two, controls the bypass solenoid valve and close.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the multi-line system of the embodiment of the present invention；
Fig. 2 is that the process of the control method blocked according to the multi-line system blowout prevention enthalpy valve body of the embodiment of the present invention is illustrated
Figure；
Fig. 3 is that the process of the control method blocked according to the multi-line system blowout prevention enthalpy valve body of one embodiment of the invention is shown
It is intended to；
Fig. 4 is the process of the control method blocked according to the multi-line system blowout prevention enthalpy valve body of another embodiment of the present invention
Schematic diagram；
Fig. 5 is the process according to the control method of the multi-line system blowout prevention enthalpy valve body blocking of another embodiment of the invention
Schematic diagram；
Fig. 6 is the process of the control method blocked according to the multi-line system blowout prevention enthalpy valve body of further embodiment of the present invention
Schematic diagram；
Fig. 7 is that the box of the control device blocked according to the multi-line system blowout prevention enthalpy valve body of the embodiment of the present invention is illustrated
Figure；
Fig. 8 is that the box of the control device blocked according to the multi-line system blowout prevention enthalpy valve body of one embodiment of the invention shows
It is intended to.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the control method and dress of the multi-line system blowout prevention enthalpy valve body blocking of the embodiment of the present invention are described
It sets.
Fig. 1 is the structural schematic diagram according to the multi-line system of the embodiment of the present invention.
As shown in Figure 1, in some embodiments of the invention, the spray enthalpy pipeline of multi-line system may include spray enthalpy solenoid valve
SV8, bypass solenoid valve SV5 and cold plate excessively change electric expansion valve EXVC.
Specifically, as shown in Figure 1, one end of spray enthalpy solenoid valve SV8 is connected with one end of compressor of outdoor unit INV, enthalpy is sprayed
The other end of solenoid valve SV8 changes PHE with cold plate excessively and is connected；It crosses cold plate and changes the outlet of PHE and be provided with cold plate and change electric expansion valve
EXVC；Bypass solenoid valve SV5 was set to cold plate and changed between PHE and spray enthalpy solenoid valve SV8, and the entrance phase with low-pressure tank ACC
Even.
Further, according to one embodiment of present invention, as shown in Fig. 2, what multi-line system blowout prevention enthalpy valve body blocked
Control method includes:
S101 controls spray enthalpy solenoid valve and opens if multi-line system starts.
That is, control spray enthalpy solenoid valve SV8 is opened when multi-line system starting.
S102 obtains the discharge superheat of multi-line system.
It should be understood that discharge superheat DH, that is, compressor exhaust pipe of multi-line system or the inlet temperature Tr of condenser
The temperature difference between the corresponding saturation temperature Tc of practical condensing pressure, i.e. DH=Tc-Tr.
S103 obtained the control instruction that cold plate changes electric expansion valve, wherein control instruction includes out code and unlatching
Instruction.
It should be noted that in some embodiments of the invention, it can be according to the discharge superheat of aforementioned multi-line system
DH obtained the control instruction that cold plate changes electric expansion valve.
S104, according to the control instruction that the discharge superheat of multi-line system and excessively cold plate change electric expansion valve, to spray enthalpy
Valve body is adjusted.
As a result, according to the discharge superheat of multi-line system and different control instructions, to the spray enthalpy valve of multi-line system
Body is adjusted, and avoids multi-line system spray enthalpy valve body blocking, thus, the performance of multi-line system is promoted, and improve multi-connected machine
The reliability of system.
Specifically, according to one embodiment of present invention, as shown in figure 3, if multi-line system starts, spray enthalpy electricity is controlled
After magnet valve is opened, further includes:
S105 obtained the state that cold plate changes electric expansion valve.
That is, obtaining the shape that cold plate changes electric expansion valve EXVC after control spray enthalpy solenoid valve SV8 is opened
State, wherein crossing cold plate and changing the state of electric expansion valve EXVC may include open state and closed state.
S106, if crossing cold plate to change the state of electric expansion valve is open state, obtain multi-line system crosses cold plate plate
Change the degree of superheat.
That is, served as cold plate change electric expansion valve EXVC state be open state when, obtain multi-line system
It crosses cold plate plate and changes degree of superheat CH.
Optionally, can be entered by crossing the entrance that changes of cold plate and outlet setting temperature sensor with obtained that cold plate changes
The outlet temperature Tc that mouth temperature Tr and excessively cold plate change, and obtained cold plate plate and change degree of superheat CH, wherein CH=Tc-Tr.
S107 if the cold plate plate of crossing of multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold, and continues the 4th
Preset time, and the discharge superheat of multi-line system is less than third temperature threshold, then controls spray enthalpy solenoid valve and close.
That is, the cold plate plate of crossing when multi-line system changes degree of superheat CH less than or equal to the 4th temperature threshold T4, and
Continue the 4th preset time t 4, and the discharge superheat DH of multi-line system is less than third temperature threshold T3, i.e. CH≤T4 is simultaneously held
Continuous 4th preset time, and when DH < T3, control spray enthalpy solenoid valve SV8 is closed.
It should be understood that in an embodiment of the present invention, spray enthalpy solenoid valve SV8 is opened with the operation of multi-line system,
When spray enthalpy solenoid valve SV8 and cross cold plate change electromagnetic expanding valve EXVC and be in open state simultaneously when, spray enthalpy solenoid valve SV8 and cold plate
Coolant path can be formed by changing between electromagnetic expanding valve EXVCEXVC.At this point, if the cold plate plate of crossing of multi-line system changes degree of superheat CH
Less than or equal to the 4th temperature threshold T4, and continue the 4th preset time t 4, and the discharge superheat DH of multi-line system is less than
Third temperature threshold T3, then the performance for being believed that cold plate changed is relatively low, and spray enthalpy solenoid valve SV8 changes electromagnetic expanding valve with cold plate is crossed
High pressure refrigerant in the formed coolant path of EXVC is unfavorable for improving the system exhaust degree of superheat, need to control spray enthalpy solenoid valve SV8 and close
It closes, to promote the performance of multi-line system, and improves the reliability of multi-line system.
Further, according to one embodiment of present invention, as shown in figure 4, according to the discharge superheat of multi-line system
The control instruction that electric expansion valve is changed with cold plate excessively is adjusted spray enthalpy valve body, comprising:
S201 first opens bypass solenoid valve, turned off cold plate and change electronic expansion if control instruction is out code
Valve.
That is, then first opening bypass solenoid valve SV5 when control instruction is out code, turning off cold plate and change
Electric expansion valve EXVC.
S202 controls bypass solenoid valve and restores just if the discharge superheat of multi-line system is greater than the first temperature threshold
Often work.
That is, when the discharge superheat DH of multi-line system is greater than the first temperature threshold T1, control bypass electromagnetism
Valve SV5 restores to work normally.
S203, if the discharge superheat of multi-line system be less than or equal to second temperature threshold value, and continue first it is default when
Between, alternatively, the discharge superheat of multi-line system is less than third temperature threshold, and continue the second preset time, then controls bypass
Solenoid valve is closed, wherein the first temperature threshold is greater than second temperature threshold value, and second temperature threshold value is greater than third temperature threshold.
That is, the discharge superheat DH when multi-line system is less than or equal to second temperature threshold value T2, and continue the
One preset time t 1, alternatively, the discharge superheat DH of multi-line system be less than third temperature threshold T3, and continue second it is default when
Between t2, i.e. DH≤T2 and continue the first preset time t 1, alternatively, DH < T3, and when continuing the second preset time t 2, control bypass
Solenoid valve SV5 is closed, wherein the first temperature threshold T1 is greater than second temperature threshold value T2, and second temperature threshold value T2 is greater than third temperature
Spend threshold value T3.
For example, when the discharge superheat DH of multi-line system is greater than the first temperature threshold T1, it is believed that multi-connected machine
The discharge superheat of system meets service condition, and for multi-line system without wet operating risk, the working condition of bypass solenoid valve SV5 can
It being adjusted according to compressor frequency or multi-line system high pressure etc., i.e., control bypass solenoid valve SV5 restores to work normally, with
And when the discharge superheat DH of multi-line system is less than or equal to second temperature threshold value T2, and continue the first preset time t 1, or
Person, the discharge superheat DH of multi-line system are less than third temperature threshold T3, and continue the second preset time t 2, i.e. DH≤T2 and
Continue the first preset time t 1, alternatively, DH < T3, and when continuing the second preset time t 2, it is believed that multi-line system was vented
Temperature is insufficient, at this point, control bypass solenoid valve SV5 is closed, thus, promote the performance of multi-line system.
In addition, then first opening bypass solenoid valve SV5 when control instruction is out code, turning off cold plate and change electronics
Expansion valve EXVC when the discharge superheat DH of multi-line system is less than or equal to second temperature threshold value T2, and continues first in turn
Preset time t 1 alternatively, the discharge superheat DH of multi-line system is less than third temperature threshold T3, and continues the second preset time
T2, control bypass solenoid valve SV5 are closed.
Further, according to one embodiment of present invention, as shown in figure 5, according to the discharge superheat of multi-line system
The control instruction that electric expansion valve is changed with cold plate excessively is adjusted spray enthalpy valve body, further includes:
S301, if control instruction is that open command obtains the mistake of multi-line system after the third preset time that is delayed
Cold plate plate changes the degree of superheat.
That is, after the third preset time that is delayed, obtaining multi-line system when control instruction is open command
Cross cold plate plate change degree of superheat CH.
S302 if the cold plate plate of crossing of multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold, and continues the 4th
Preset time, and the discharge superheat of multi-line system is less than third temperature threshold, then controls spray enthalpy solenoid valve and close.
That is, the cold plate plate of crossing when multi-line system changes degree of superheat CH less than or equal to the 4th temperature threshold T4, and
Continue the 4th preset time t 4, and the discharge superheat DH of multi-line system is less than third temperature threshold T3, i.e. CH≤T4 is simultaneously held
Continuous 4th preset time, and when DH < T3, control spray enthalpy solenoid valve SV8 is closed.
Further, according to one embodiment of present invention, as shown in fig. 6, after control spray enthalpy solenoid valve closing, packet
It includes:
S401 obtains the state of the spray enthalpy solenoid valve of multi-line system.
That is, obtaining the spray enthalpy solenoid valve SV8's of multi-line system after control spray enthalpy solenoid valve SV8 is closed
State, wherein the state of the spray enthalpy solenoid valve SV8 of multi-line system may include open state and closed state.
S402, if the valve body number that the state of the spray enthalpy solenoid valve of multi-line system is in off state is greater than or equal to two
It is a, then control bypass solenoid valve closing.
That is, be greater than as the valve body number X that is in off state of state of the spray enthalpy solenoid valve SV8 of multi-line system or
Equal to two, i.e. when X >=2, control bypass solenoid valve SV5 is closed, and to promote the performance of multi-line system, and improves multi-connected machine system
The reliability of system.
To sum up, the control method of multi-line system blowout prevention enthalpy valve body blocking according to an embodiment of the present invention, if multi-connected machine system
System starting then controls spray enthalpy solenoid valve and opens, and obtained the control instruction that cold plate changes electric expansion valve, wherein control instruction
Including out code and open command, and the discharge superheat of multi-line system is obtained, in turn, according to the row of multi-line system
The gas degree of superheat changes the control instruction of electric expansion valve with cold plate is crossed, and is adjusted to spray enthalpy valve body.As a result, according to different control
The discharge superheat of instruction and multi-line system, is adjusted the spray enthalpy valve body of multi-line system, multi-line system is avoided to spray
The blocking of enthalpy valve body, thus, the performance of multi-line system is promoted, and improve the reliability of multi-line system.
Fig. 7 is that the box of the control device blocked according to the multi-line system blowout prevention enthalpy valve body of the embodiment of the present invention is illustrated
Figure.
As shown in fig. 7, the control device 100 of multi-line system blowout prevention enthalpy valve body blocking includes: the first acquisition module 1, the
Two obtain module 2 and control module 3.
Specifically, the first acquisition module 1 was for obtaining the control instruction that cold plate changes electric expansion valve, wherein control refers to
Enable includes out code and open command；Second acquisition module 2 is used to obtain the discharge superheat of multi-line system；Control module
3 for when multi-line system starting, control spray enthalpy solenoid valve to be opened, and according to the discharge superheat and mistake of multi-line system
Cold plate changes the control instruction of electric expansion valve, is adjusted to spray enthalpy valve body.
Further, according to one embodiment of present invention, control module 3 is also used to: when control instruction is out code
When, bypass solenoid valve is first opened, cold plate was turned off and changes electric expansion valve；When the discharge superheat of multi-line system is greater than first
When temperature threshold, control bypass solenoid valve restores to work normally；When the discharge superheat of multi-line system is less than or equal to second
Temperature threshold, and continue the first preset time, alternatively, the discharge superheat of multi-line system is less than third temperature threshold, and hold
When continuous second preset time, control bypass solenoid valve is closed, wherein the first temperature threshold is greater than second temperature threshold value, the second temperature
It spends threshold value and is greater than third temperature threshold.
Further, according to one embodiment of present invention, the second acquisition module 2 is also used to: when control instruction is unlatching
When instruction, after the third preset time that is delayed, the cold plate plate of crossing for obtaining multi-line system changes the degree of superheat；Control module 3 is also used
In: it is less than or equal to the 4th temperature threshold when the cold plate plate excessively of multi-line system changes the degree of superheat, and continues the 4th preset time, and
When the discharge superheat of multi-line system is less than third temperature threshold, control spray enthalpy solenoid valve is closed.
Further, according to one embodiment of present invention, as shown in figure 8, what multi-line system blowout prevention enthalpy valve body blocked
Control device 100 further include: third obtains module 4.
Specifically, third obtains module 4 for obtaining the state that cold plate changes electric expansion valve；Second obtains module 2 also
For, served as cold plate change electric expansion valve state be open state when, obtain multi-line system cross cold plate plate change the degree of superheat；
Control module 3 is also used to, and when the cold plate plate of crossing of multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold, and continues the
Four preset times, and the discharge superheat of multi-line system be less than third temperature threshold when, control spray enthalpy solenoid valve close.
Further, according to an embodiment of the invention, third acquisition module 4 is also used to: obtaining the spray enthalpy of multi-line system
The state of solenoid valve；Control module 3 is also used to, when a valve body that the state of the spray enthalpy solenoid valve of multi-line system is in off state
When number is greater than or equal to two, control bypass solenoid valve is closed.
It should be noted that the control device for the multi-line system blowout prevention enthalpy valve body blocking that the embodiment of the present invention proposes is with before
The specific embodiment for stating the control method of the multi-line system blowout prevention enthalpy valve body blocking of embodiment proposition corresponds, herein not
It repeats again.
To sum up, the control device of multi-line system blowout prevention enthalpy valve body blocking according to an embodiment of the present invention, is obtained by first
Modulus block obtained the control instruction that cold plate changes electric expansion valve, wherein and control instruction includes out code and open command, and
The discharge superheat that module obtains multi-line system is obtained by second, thus, when multi-line system starting, by controlling mould
Block control spray enthalpy solenoid valve is opened, and according to the discharge superheat of multi-line system and crosses the control that cold plate changes electric expansion valve
Instruction is adjusted spray enthalpy valve body.As a result, according to the discharge superheat of different control instruction and multi-line system, to more
The spray enthalpy valve body of on-line system is adjusted, and avoids multi-line system spray enthalpy valve body blocking, thus, promote the property of multi-line system
Can, and improve the reliability of multi-line system.
It should be noted that in flow charts indicate or logic and/or step described otherwise above herein, for example,
It is considered the order list of the executable instruction for realizing logic function, may be embodied in any computer can
Read in medium, for instruction execution system, device or equipment (such as computer based system, including the system of processor or its
He can be from instruction execution system, device or equipment instruction fetch and the system executed instruction) it uses, or combine these instruction executions
System, device or equipment and use.For the purpose of this specification, " computer-readable medium " can be it is any may include, store,
Communicate, propagate, or transport program is for instruction execution system, device or equipment or combines these instruction execution systems, device or sets
The standby and device that uses.The more specific example (non-exhaustive list) of computer-readable medium include the following: have one or
The electrical connection section (electronic device) of multiple wirings, portable computer diskette box (magnetic device), random access memory (RAM), only
It reads memory (ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable light
Disk read-only memory (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or its
His suitable medium, because can then be edited for example by carrying out optical scanner to paper or other media, be interpreted or must
It is handled when wanting with other suitable methods electronically to obtain described program, is then stored in computer storage
In.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of control method of multi-line system blowout prevention enthalpy valve body blocking, which is characterized in that the spray enthalpy valve body includes: spray enthalpy
Solenoid valve, bypass solenoid valve and cold plate excessively change electric expansion valve, which comprises
If the multi-line system starting, controls the spray enthalpy solenoid valve and opens；
Obtain the discharge superheat of the multi-line system；
Obtain the control instruction crossed cold plate and change electric expansion valve, wherein the control instruction includes out code and unlatching
Instruction；
According to the discharge superheat of the multi-line system and the control instruction crossed cold plate and change electric expansion valve, to the spray
Enthalpy valve body is adjusted.
2. the method as described in claim 1, which is characterized in that the discharge superheat and institute according to the multi-line system
The control instruction that cold plate changes electric expansion valve was stated, the spray enthalpy valve body was adjusted, comprising:
If the control instruction is the out code, the bypass solenoid valve is first opened, the cold plate of crossing is turned off and changes electricity
Sub- expansion valve；
If the discharge superheat of the multi-line system is greater than the first temperature threshold, controls the bypass solenoid valve and restore normal
Work；
If the discharge superheat of the multi-line system is less than or equal to second temperature threshold value, and continues the first preset time, or
The discharge superheat of person, the multi-line system are less than third temperature threshold, and continue the second preset time, then control the side
Three-way electromagnetic valve is closed, wherein first temperature threshold is greater than the second temperature threshold value, and the second temperature threshold value is greater than institute
State third temperature threshold.
3. the method as described in claim 1, which is characterized in that the discharge superheat and institute according to the multi-line system
The control instruction that cold plate changes electric expansion valve was stated, the spray enthalpy valve body was adjusted, further includes:
If the control instruction is that the open command obtains the multi-line system after the third preset time that is delayed
Cross cold plate plate change the degree of superheat；
If the cold plate plate of crossing of the multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold, and continue the 4th it is default when
Between, and the discharge superheat of the multi-line system is less than the third temperature threshold, then controls the spray enthalpy solenoid valve and close.
4. the method as described in claim 1, which is characterized in that if the multi-line system starts, control the spray
After enthalpy solenoid valve is opened, further includes:
Obtain the state crossed cold plate and change electric expansion valve；
If the cold plate of crossing changes the state of electric expansion valve as open state, the cold plate plate of crossing for obtaining the multi-line system is changed
The degree of superheat；
If the cold plate plate of crossing of the multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold, and continue the 4th it is default when
Between, and the discharge superheat of the multi-line system is less than third temperature threshold, then controls the spray enthalpy solenoid valve and close.
5. the method as claimed in claim 3 or 4, which is characterized in that after the control spray enthalpy solenoid valve is closed, packet
It includes:
Obtain the state of the spray enthalpy solenoid valve of the multi-line system；
If the valve body number that the state of the spray enthalpy solenoid valve of the multi-line system is in off state is greater than or equal to two, control
The bypass solenoid valve is made to close.
6. a kind of control device of multi-line system blowout prevention enthalpy valve body blocking, which is characterized in that the spray enthalpy valve body includes: spray enthalpy
Solenoid valve, bypass solenoid valve and cold plate excessively change electric expansion valve, and described device includes:
First obtains module, for obtaining the control instruction crossed cold plate and change electric expansion valve, wherein the control instruction packet
Include out code and open command；
Second obtains module, for obtaining the discharge superheat of the multi-line system；
Control module, for controlling the spray enthalpy solenoid valve and opening, and according to the mistake when multi-line system starting
Cold plate changes the control instruction of electric expansion valve and the discharge superheat of the multi-line system, adjusts to the spray enthalpy valve body
It is whole.
7. device as claimed in claim 6, which is characterized in that the control module is also used to:
When the control instruction is the out code, the bypass solenoid valve is first opened, the cold plate of crossing is turned off and changes electricity
Sub- expansion valve；
When the discharge superheat of the multi-line system is greater than the first temperature threshold, controls the bypass solenoid valve and restore normal
Work；
When the discharge superheat of the multi-line system is less than or equal to second temperature threshold value, and continue the first preset time, or
Person, the discharge superheat of the multi-line system are less than third temperature threshold, and when continuing the second preset time, control the side
Three-way electromagnetic valve is closed, wherein first temperature threshold is greater than the second temperature threshold value, and the second temperature threshold value is greater than institute
State third temperature threshold.
8. device as claimed in claim 6, which is characterized in that
The second acquisition module is also used to: when the control instruction is the open command, in delay third preset time
Later, the cold plate plate of crossing for obtaining the multi-line system changes the degree of superheat；
The control module is also used to: when the cold plate plate of crossing of the multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold
Value, and continues the 4th preset time, and when the discharge superheat of the multi-line system is less than the third temperature threshold, control
The spray enthalpy solenoid valve is closed.
9. device as claimed in claim 6, which is characterized in that described device further include: third obtains module；
The third obtains module and is used to obtain the state crossed cold plate and change electric expansion valve；
The second acquisition module is also used to, and when it is open state that the cold plate excessively, which changes the state of electric expansion valve, obtains institute
The cold plate plate of crossing for stating multi-line system changes the degree of superheat；
The control module is also used to, when the cold plate plate of crossing of the multi-line system changes the degree of superheat less than or equal to the 4th temperature threshold
Value, and continues the 4th preset time, and when the discharge superheat of the multi-line system is less than third temperature threshold, described in control
Enthalpy solenoid valve is sprayed to close.
10. device as claimed in claim 8 or 9, which is characterized in that
The third obtains module and is also used to: obtaining the state of the spray enthalpy solenoid valve of the multi-line system；
The control module is also used to, when the valve body number that the state of the spray enthalpy solenoid valve of the multi-line system is in off state
When more than or equal to two, controls the bypass solenoid valve and close.
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| CN201910150513.3A CN109915991A (en) | 2019-02-28 | 2019-02-28 | The control method and device of multi-line system blowout prevention enthalpy valve body blocking |
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| CN201910150513.3A CN109915991A (en) | 2019-02-28 | 2019-02-28 | The control method and device of multi-line system blowout prevention enthalpy valve body blocking |
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| CN109915991A true CN109915991A (en) | 2019-06-21 |
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| CN201910150513.3A Pending CN109915991A (en) | 2019-02-28 | 2019-02-28 | The control method and device of multi-line system blowout prevention enthalpy valve body blocking |
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