CN209588306U - A kind of control device of electric expansion valve - Google Patents
A kind of control device of electric expansion valve Download PDFInfo
- Publication number
- CN209588306U CN209588306U CN201822098085.8U CN201822098085U CN209588306U CN 209588306 U CN209588306 U CN 209588306U CN 201822098085 U CN201822098085 U CN 201822098085U CN 209588306 U CN209588306 U CN 209588306U
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- China
- Prior art keywords
- module
- bypass
- aperture
- main road
- expansion valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses a kind of control devices of electric expansion valve, including main road control unit, bypass control unit and controller；The main road control unit includes initialization module, main road just aperture setup module, exhaust protective module and main road aperture regulation module；The bypass control unit includes bypass just aperture setup module, delivery temperature read module and bypass aperture regulation module；It ensure that equipment under varying environment and different working condition, voluntarily adjusts throttling depth, makes equipment high efficiency, safely and steadly runs.
Description
Technical field
The utility model relates to the control devices of electro-mechanical arts, especially electric expansion valve.
Background technique
Currently, electric expansion valve is the important ring in SAPMAC method circuit of frequency conversion low temperature water chiller/heater.And in order to better
Effect, part frequency conversion low temperature water chiller/heater can be applied to main road electric expansion valve and bypass electric expansion valve, while frequency conversion low temperature
Water chiller/heater has various modes.How to make frequency conversion low temperature water chiller/heater coordinated under various modes main road electric expansion valve and
Bypass electric expansion valve carries out work and becomes one of the field important solving the problems, such as.
Utility model content
To solve the above problems, a kind of control dress for being designed to provide electric expansion valve of the utility model embodiment
Set, solve make frequency conversion low temperature water chiller/heater coordinated under various modes main road electric expansion valve and bypass electric expansion valve into
The problem of row work.
Technical solution used by the utility model embodiment solves the problems, such as it is:
A kind of control device of electric expansion valve, including main road control unit, bypass control unit and controller；
The main road control unit includes:
For controlling the exhaust protective module for realizing the exhaust protection of main road electric expansion valve；
For adjusting the main road aperture regulation mould of main road aperture according to the difference of the actual average degree of superheat and target superheat degree
Block；
The exhaust protective module and main road aperture regulation module are connect with controller respectively；
The bypass control unit includes:
The delivery temperature read module of compressor exhaust temperature is read for the period；
For adjusting the bypass aperture regulation module of the bypass aperture of bypass electric expansion valve；
The delivery temperature read module and bypass aperture regulation module are connect with controller respectively.
Further, the main road control unit further includes the initialization module and use for initializing main road electric expansion valve
According to aperture setup module at the beginning of the main road of aperture at the beginning of Setting pattern and environment temperature setting main road；The initialization module and master
Just aperture setup module is connect with controller on road.
Further, the bypass control unit further includes that the bypass of aperture at the beginning of for bypass to be arranged according to environment temperature is just opened
Spend setup module；Just aperture setup module is connect the bypass with controller.
Further, a kind of control device of electric expansion valve, further includes temperature sensor interface and AD conversion module, described
Temperature sensor interface is connect with AD conversion module, and the AD conversion module is connect with controller；The temperature sensor interface
Including delivery temperature interface, heat exchanger inlet temperature interface, heat exchanger outlet temperature interface and environment temperature interface.
Further, a kind of control device of electric expansion valve, further includes storage unit, and the storage unit and controller connect
It connects.
The beneficial effect of the utility model embodiment is: a kind of control dress for electric expansion valve that the utility model uses
Set, according to Setting pattern and various temperature sensors transmission come each Temperature Quantity, respectively to main road electric expansion valve and bypass
Its aperture is adjusted in electric expansion valve；It ensure that under varying environment and different working condition, it is deep voluntarily to adjust throttling for equipment
Degree, makes equipment high efficiency, safely and steadly runs.
Detailed description of the invention
The utility model is described in further detail with example with reference to the accompanying drawing.
Fig. 1 is the structure chart of one embodiment of the utility model；
Fig. 2 is the structure chart of another embodiment of the utility model；
Fig. 3 is the structure chart of another embodiment of the utility model.
Specific embodiment
Referring to Fig.1, the utility model embodiment provides a kind of control device of electric expansion valve, including main road control list
Member 120, bypass control unit 130 and controller 110；
The main road control unit 120 includes:
For controlling the exhaust protective module 123 for realizing the exhaust protection of main road electric expansion valve；
For adjusting the main road aperture regulation mould of main road aperture according to the difference of the actual average degree of superheat and target superheat degree
Block 124；
The walk-through gas shielded module 123 and main road aperture regulation module 124 are connect with controller 110 respectively；
The bypass control unit 130 includes:
The delivery temperature read module 132 of compressor exhaust temperature is read for the period；
For adjusting the bypass aperture regulation module 133 of the bypass aperture of bypass electric expansion valve；
The delivery temperature read module 132 and bypass aperture regulation module 133 are connect with controller 110 respectively.
Referring to Fig. 2, in another embodiment, the main road control unit 120 further includes for initializing main road electronics
The initialization module 121 of expansion valve, and for according to aperture at the beginning of the main road of aperture at the beginning of Setting pattern and environment temperature setting main road
Setup module 122；Just aperture setup module 122 is connect with controller 110 respectively for the initialization module 121, main road.It is described auxiliary
Road control unit 130 further includes aperture setup module 131 at the beginning of the bypass of aperture at the beginning of for bypass to be arranged according to environment temperature；It is described
Just aperture setup module 131 is connect bypass with controller 110.
Referring to Fig. 3, In yet another embodiment, a kind of control device of electric expansion valve further includes that temperature sensor connects
Mouth 140 and AD conversion module 160, the temperature sensor interface 140 are connect with AD conversion module 160, the AD conversion module
160 with controller 110；The temperature sensor interface 140 includes delivery temperature interface 141, heat exchanger inlet temperature interface
142, heat exchanger outlet temperature interface 143 and environment temperature interface 144.The delivery temperature interface 141 is used for transmission compressor
Delivery temperature and compressor return air temperature data, the heat exchanger inlet temperature interface 142 are used for transmission heat exchanger inlet temperature
Data, heat exchanger outlet temperature interface 143 are used for transmission heat exchanger outlet temperature data, and environment temperature interface 144 is used for transmission
Ambient temperature data.
Further, a kind of control device of electric expansion valve further includes storage unit 150, the storage unit 150 and control
Device 110 processed connects.The storage unit 150 is used for the data that secondary storage controller 110 is handled.
In one embodiment, the regulative mode of main road aperture regulation module is as follows:
When compressor exhaust temperature is less than or equal to 105 degrees Celsius, main road electric expansion valve is according to the actual average degree of superheat
Main road aperture is adjusted with the difference of target superheat degree；Main road electronic expansion valve opening variable quantity
①SHIt is average< 0, Kp1=3；
②SHIt is average=0, Kp1=2；
③SHIt is average> 0, Kp1=1；
④SHIt is average> 0 and 0 < TSH-SHIt is average≤ 1, keep original step number.
Wherein, SHIt is averageFor the average value of practical degree of superheat SH in 30 seconds；Under heating mode, practical degree of superheat SH=compressor
Suction temperature Ts- heat exchanger outlet temperature Tp；Under refrigeration mode, practical degree of superheat SH=compressor return air temperature Ts- heat exchange
Device inlet temperature Tc.
In one embodiment, the regulative mode of bypass aperture regulation module is as follows: if the compressor exhaust temperature is high
In bypass outlet air temperature set value, bypass electric expansion valve adjusts bypass aperture according to compressor exhaust temperature specifically:
If compressor exhaust temperature is higher than 95 degrees Celsius, EXVn=(EXVN-1)+[KP2* (TDn- 95)+KD* (TDn
TDN-1)]；
Wherein EXVnFor the practical aperture of bypass electric expansion valve, EXVN-1For last bypass electronic expansion valve opening, KP2For
Bypass expansion valve exhaust ratio coefficient, KD are that bypass expansion valve is vented differential coefficient, TDnFor compressor actual exhaust air temperature,
TDN-1For last compressor exhaust temperature.
If the compressor exhaust temperature is lower than bypass outlet air temperature set value, bypass electric expansion valve is according to degree of superheat tune
Save bypass aperture specifically:
If compressor exhaust temperature is lower than 95 degrees Celsius, EXVn=(EXVN-1)+[KP2* (DTCn- DTS)+KD*
(DTCn- DTCN-1)]；
Wherein DTCnFor realistic objective superheat value, DTS is setting target superheat value, DTCN-1For last target superheat value.
The above, the only preferred embodiment of the utility model, the utility model are not limited to above-mentioned implementation
Mode, as long as its technical effect for reaching the utility model with identical means, all should belong to the protection scope of the utility model.
Claims (5)
1. a kind of control device of electric expansion valve, which is characterized in that including main road control unit, bypass control unit and control
Device；
The main road control unit includes:
For controlling the exhaust protective module for realizing the exhaust protection of main road electric expansion valve；
For adjusting the main road aperture regulation module of main road aperture according to the difference of the actual average degree of superheat and target superheat degree；
The exhaust protective module and main road aperture regulation module are connect with controller respectively；
The bypass control unit includes:
The delivery temperature read module of compressor exhaust temperature is read for the period；
For adjusting the bypass aperture regulation module of the bypass aperture of bypass electric expansion valve；
The delivery temperature read module and bypass aperture regulation module are connect with controller respectively.
2. a kind of control device of electric expansion valve according to claim 1, which is characterized in that the main road control unit
It further include initialization module for initializing main road electric expansion valve and for according to Setting pattern and environment temperature setting master
The first aperture setup module of main road of the first aperture in road；Just aperture setup module is connect with controller for the initialization module and main road.
3. a kind of control device of electric expansion valve according to claim 2, which is characterized in that the bypass control unit
It further include aperture setup module at the beginning of the bypass of aperture at the beginning of for bypass to be arranged according to environment temperature；Just mould is arranged in aperture to the bypass
Block is connect with controller.
4. a kind of control device of electric expansion valve according to claim 3, which is characterized in that further include temperature sensor
Interface and AD conversion module, the temperature sensor interface are connect with AD conversion module, and the AD conversion module and controller connect
It connects；The temperature sensor interface include delivery temperature interface, heat exchanger inlet temperature interface, heat exchanger outlet temperature interface and
Environment temperature interface.
5. a kind of control device of electric expansion valve according to claim 1, which is characterized in that it further include storage unit,
The storage unit is connect with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822098085.8U CN209588306U (en) | 2018-12-13 | 2018-12-13 | A kind of control device of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822098085.8U CN209588306U (en) | 2018-12-13 | 2018-12-13 | A kind of control device of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209588306U true CN209588306U (en) | 2019-11-05 |
Family
ID=68349061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822098085.8U Active CN209588306U (en) | 2018-12-13 | 2018-12-13 | A kind of control device of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209588306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203225A (en) * | 2021-04-26 | 2021-08-03 | 无锡同方人工环境有限公司 | Control method of double-electronic expansion valve |
-
2018
- 2018-12-13 CN CN201822098085.8U patent/CN209588306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203225A (en) * | 2021-04-26 | 2021-08-03 | 无锡同方人工环境有限公司 | Control method of double-electronic expansion valve |
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