CN203869396U - Control system for electronic expansion valve - Google Patents
Control system for electronic expansion valve Download PDFInfo
- Publication number
- CN203869396U CN203869396U CN201420124069.0U CN201420124069U CN203869396U CN 203869396 U CN203869396 U CN 203869396U CN 201420124069 U CN201420124069 U CN 201420124069U CN 203869396 U CN203869396 U CN 203869396U
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- CN
- China
- Prior art keywords
- expansion valve
- control system
- electronic expansion
- model
- plc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Temperature (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a control system for an electronic expansion valve. The control system is used for driving the electronic expansion valve. The control system for the expansion valve comprises a PLC and a TB6560 driver chip which is electrically connected with the PLC, wherein the TB6560 driver chip is electrically connected with the electronic expansion valve. According to the control system for the electronic expansion valve, measurement of the temperature and the pressure is transferred into the PLC of the control system and is completed through the PLC, a special temperature transmitter and a special pressure transmitter are omitted, the utilization rate of internal resources of the PLC is increased, and cost of the control system is reduced; in addition, due to the fact that the standard TB6560 driver chip is adopted by the control system to replace an original drive circuit, the universality is high, and maintenance is convenient.
Description
Technical field
The utility model relates to the electric control gear of refrigeration plant, refers to especially electronic expansion valve controls system.
Background technology
Electric expansion valve expansion valve on refrigerating plant is a vitals in refrigeration system, is generally installed between liquid storage cylinder and evaporimeter.The conventional control devices of electric expansion valve is the special-purpose control system of having a style of one's own, comprise central processing unit, the temperature transmitter of measuring in order to suction temperature, gaging pressure transmitter in order to pressure of inspiration(Pi), in order to drive the drive circuit of electric expansion valve, visible conventional control devices parts are many, complex structure, and manufacturing cost is high.
Utility model content
The utility model object is to provide a kind of electronic expansion valve controls system reducing costs.
The technical solution of the utility model is achieved in that electronic expansion valve controls system, in order to drive electric expansion valve, it comprises PLC controller, and drives chip with the TB6560 that PLC controller is electrically connected, and this TB6560 drives chip to be electrically connected electric expansion valve.
As preferably, the utility model further comprises photo-coupler, and this photo-coupler connects PLC controller and TB6560 driving chip.
As preferably, this photo-coupler is the photo-coupler of EL817 model.
The utility model is compared with prior art: the utility model by temperature, press force measurement to transfer in the PLC controller of control system, by PLC controller, completed the measurement of temperature and pressure, special temperature transmitter and pressure transmitter have been saved, improved the utilization rate of PLC controller internal resource, reduce the cost of control system, and native system also adopts standardized TB6560 to drive chip to replace original drive circuit, has better versatility, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is control schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, electronic expansion valve controls system of the present utility model, be used for driving electric expansion valve 3, realization is driven valve or is closed valve and controls, it comprises PLC controller 1, the interface circuit and the TB6560 that are electrically connected with PLC controller 1 drive chip 2, and this TB6560 drives chip 2 to be electrically connected electric expansion valve 3, and other peripheral circuits.
The utility model further comprises photo-coupler 4, and this photo-coupler 4 connects PLC controller 1 and drives chip 2 with TB6560, and preferably, this photo-coupler 4 is the photo-coupler of EL817 model.Utilize described photo-coupler 4 TB6560 can be driven step-by-step impulse that chip 2 receives simultaneously to the valve position pulse signal input terminal output pulse signal of PLC controller 1, the close/open valve signal of this signal and PLC controller 1 comes together to calculate the aperture (or position) of valve.
The utility model is compared with prior art: the utility model by temperature, press force measurement to transfer in the PLC controller 1 of control system, by PLC controller 1, completed the measurement of temperature and pressure, special temperature transmitter and pressure transmitter have been saved, improved the utilization rate of PLC controller 1 internal resource, reduce the cost of control appliance, native system also adopts standardized TB6560 to drive chip to replace original drive circuit, has better versatility, easy to maintenance.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. electronic expansion valve controls system, in order to drive electric expansion valve (3), it is characterized in that: comprise PLC controller (1), and drive chip (2) with the TB6560 that PLC controller (1) is electrically connected, this TB6560 drives chip (2) to be electrically connected electric expansion valve (3).
2. electronic expansion valve controls system according to claim 1, is characterized in that: further comprise photo-coupler (4), this photo-coupler (4) connects PLC controller (1) and drives chip (2) with TB6560.
3. electronic expansion valve controls system according to claim 2, is characterized in that: this photo-coupler (4) is the photo-coupler of EL817 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420124069.0U CN203869396U (en) | 2014-03-19 | 2014-03-19 | Control system for electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420124069.0U CN203869396U (en) | 2014-03-19 | 2014-03-19 | Control system for electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203869396U true CN203869396U (en) | 2014-10-08 |
Family
ID=51650340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420124069.0U Expired - Fee Related CN203869396U (en) | 2014-03-19 | 2014-03-19 | Control system for electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203869396U (en) |
-
2014
- 2014-03-19 CN CN201420124069.0U patent/CN203869396U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 |