CN105674649A - Control method for electronic expansion valve - Google Patents
Control method for electronic expansion valve Download PDFInfo
- Publication number
- CN105674649A CN105674649A CN201610014120.6A CN201610014120A CN105674649A CN 105674649 A CN105674649 A CN 105674649A CN 201610014120 A CN201610014120 A CN 201610014120A CN 105674649 A CN105674649 A CN 105674649A
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- electric expansion
- control method
- step number
- electronic expansion
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
Abstract
The invention discloses a control method for an electronic expansion valve. The control method comprises the following steps of closing the electronic expansion valve before a compressor of a unit is started; setting initial number of steps of the electronic expansion valve according to the ambient temperature; and adjusting the electronic expansion valve according to the initial number of steps and then starting the compressor. According to the control method, closing operation is conducted before the compressor is started to eliminate the out-of-step of the electronic expansion valve; the initial number of steps of the electronic expansion valve is set according to the ambient temperature, so that the electronic expansion valve is adjusted to the number of steps needed by a system at full speed, the unit is made to enter a stable state as soon as possible, and therefore the property and reliability of the unit are improved effectively. The control method for the electronic expansion valve can be widely applied to the automatic control field.
Description
Technical field
The present invention relates to automation field, the control method of especially a kind of electric expansion valve.
Background technology
Existing Teat pump boiler is usually and is formed loop by compressor, condenser, electric expansion valve, vaporizer, the coolant quantity of system is adjusted by electric expansion valve, electric expansion valve can set an initial step number (between 0-500B), difference according to the actual degree of superheat and target superheat degree regulates the size of electronic expansion valve opening on the basis of initial step number, regulates system cold medium flux with this.
Electric expansion valve is similar to a motor, panel is by sending pulse signal to coil, control the rotation of rotor part, it is needle rectilinear motion vertically by the convert rotational motion of rotor part, thus regulating the circulation area of valve port, regulate the flow of cold-producing medium, owing to when the rotation of rotor part has certain effect of inertia and just starts to regulate, the tor resistance of electric expansion valve is bigger, thus causing the step number of electric expansion valve practical adjustments and the pulse signal of panel transmission to have some difference, cause electric expansion valve step-out, the permanent words run are accumulated over a long period, the inefficacy of electric expansion valve will be caused, it is stuck in little step number, affect user to use.
Furthermore Teat pump boiler needs to run in wide scope, it is typically in ambient temperature-15 to 43 DEG C to be required for producing high-temperature-hot-water (50 to 70 DEG C), at different ambient temperatures, refrigerant circulation needed for heat pump is widely different, thus causing that electric expansion valve aperture under different rings temperature can be very big, it is transferred to the overlong time required for the step number required for system by initial step number, the long-time irregular operation of system can affect performance, compressor liquid hammer can be caused time serious, thus affecting the compressor life-span, unit is caused to damage.
Summary of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to: provide a kind of and eliminate electric expansion valve step-out, the control method making unit faster enter steady statue.
The technical solution adopted in the present invention is: the control method of a kind of electric expansion valve, includes following steps:
A, unit compressor start before, close electric expansion valve;
B, detection ambient temperature, and the initial step number of electric expansion valve is set according to ambient temperature;
C, according to initial step number regulate electric expansion valve, be then turned on compressor.
Further, in described step B, according to temperature height, ambient temperature being divided into three temperature ranges, the more high then initial step number of temperature corresponding to described temperature range is more big.
Further, described step B particularly as follows:
B1, detection ambient temperature T;
B2, as T < 15 DEG C, the initial step number arranging electric expansion valve is 150;
B3, as 15 DEG C≤T < 30 DEG C, the initial step number arranging electric expansion valve is 250;
B4, when T >=30 DEG C, the initial step number arranging electric expansion valve is 350.
Further, also include step D: when after compressor start full initialization time, regulate the aperture size of electric expansion valve according to the actual degree of superheat.
Further, in described step D, initialization time is 3 minutes.
Further, in described step A before compressor start, close electric expansion valve to full off state.
Further, described unit is the unit on Teat pump boiler or cold air water heater.
The invention has the beneficial effects as follows: the inventive method first carries out shutoff operation before compressor start, eliminate the step-out of electric expansion valve; Then the initial step number of electric expansion valve is set according to ambient temperature, makes electric expansion valve with the step number needed for prestissimo adjustment to system, allow unit enter steady statue as early as possible, be effectively improved performance and the reliability of unit.
Accompanying drawing explanation
Fig. 1 is flow chart of steps of the present invention;
Fig. 2 is the initial step number corresponding relation with ambient temperature of electric expansion valve in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
With reference to Fig. 1, the control method of a kind of electric expansion valve, include following steps:
A, unit compressor start before, close electric expansion valve;
Electric expansion valve is generally disposed in the unit on Teat pump boiler or cold air water heater, close electric expansion valve and play the effect of calibration, closing motion is first to guarantee that electric expansion valve closes entirely, then initial step number (initial step number sets according to ambient temperature) is reached again, the electric expansion valve of such as 500B, 550B will be closed, thus can ensure that electric expansion valve ensures full pass before opening.
B, detection ambient temperature, and the initial step number of electric expansion valve is set according to ambient temperature;
C, according to initial step number regulate electric expansion valve, be then turned on compressor.
Due to the difference of refrigerant circulation needed for unit, the initial step number of the electric expansion valve at varying environment temperature is different, it is further used as preferred embodiment, in described step B, according to temperature height, ambient temperature being divided into three temperature ranges, the more high then initial step number of temperature corresponding to described temperature range is more big.
With reference to Fig. 2, be further used as preferred embodiment, described step B particularly as follows:
B1, detection ambient temperature T;
B2, as T < 15 DEG C, the initial step number arranging electric expansion valve is 150;
B3, as 15 DEG C≤T < 30 DEG C, the initial step number arranging electric expansion valve is 250;
B4, when T >=30 DEG C, the initial step number arranging electric expansion valve is 350.
Except setting except the initial step number shown in Fig. 2, the initial step number of temperature range and correspondence thereof also can be set according to specific needs.
It is further used as preferred embodiment, also includes step D: when after compressor start full initialization time, regulate the aperture size of electric expansion valve according to the actual degree of superheat.
It is further used as preferred embodiment, in described step D, initialization time is 3 minutes, on the basis of initial step number, regulate the size of electronic expansion valve opening further according to the difference of the actual degree of superheat and target superheat degree after 3 minutes, allow electric expansion valve with the step number needed for the fastest speed adjustment to system, allow unit enter steady statue as early as possible.
Being further used as preferred embodiment, described unit is the unit on Teat pump boiler or cold air water heater, by the inventive method application and water heater, it is ensured that water heater is normal, stable operation for a long time.
It is above the preferably enforcement of the present invention has been illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art can also make all equivalents or replacement under the premise without prejudice to spirit of the present invention, and these equivalent deformation or replacement are all contained in the application claim limited range.
Claims (7)
1. the control method of an electric expansion valve, it is characterised in that: include following steps:
A, unit compressor start before, close electric expansion valve;
B, detection ambient temperature, and the initial step number of electric expansion valve is set according to ambient temperature;
C, according to initial step number regulate electric expansion valve, be then turned on compressor.
2. the control method of a kind of electric expansion valve according to claim 1, it is characterised in that: in described step B, according to temperature height, ambient temperature being divided into three temperature ranges, the more high then initial step number of temperature corresponding to described temperature range is more big.
3. the control method of a kind of electric expansion valve according to claim 2, it is characterised in that: described step B particularly as follows:
B1, detection ambient temperature T;
B2, as T < 15 DEG C, the initial step number arranging electric expansion valve is 150;
B3, as 15 DEG C≤T < 30 DEG C, the initial step number arranging electric expansion valve is 250;
B4, when T >=30 DEG C, the initial step number arranging electric expansion valve is 350.
4. the control method of a kind of electric expansion valve according to claim 1, it is characterised in that: also include step D: when after compressor start full initialization time, regulate the aperture size of electric expansion valve according to the actual degree of superheat.
5. the control method of a kind of electric expansion valve according to claim 4, it is characterised in that: in described step D, initialization time is 3 minutes.
6. the control method of a kind of electric expansion valve according to claim 1, it is characterised in that: in described step A before compressor start, close electric expansion valve to full off state.
7. the control method of a kind of electric expansion valve according to claim 1, it is characterised in that: described unit is the unit on Teat pump boiler or cold air water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014120.6A CN105674649A (en) | 2016-01-06 | 2016-01-06 | Control method for electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014120.6A CN105674649A (en) | 2016-01-06 | 2016-01-06 | Control method for electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105674649A true CN105674649A (en) | 2016-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610014120.6A Pending CN105674649A (en) | 2016-01-06 | 2016-01-06 | Control method for electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105674649A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062580A (en) * | 2017-03-21 | 2017-08-18 | 珠海格力电器股份有限公司 | It is a kind of to reduce the control method and multi-gang air-conditioner of noise of indoor unit of air conditioner |
| CN107144055A (en) * | 2017-04-21 | 2017-09-08 | 青岛海尔空调器有限总公司 | Prevent control method and air conditioner that electric expansion valve drifts about |
| CN107543283A (en) * | 2017-08-18 | 2018-01-05 | 广东美的暖通设备有限公司 | A kind of control method of air conditioner, control system and air conditioner |
| CN107702270A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力电器股份有限公司 | Control method for electronic expansion valve and device, air-conditioning |
| CN108518807A (en) * | 2018-05-24 | 2018-09-11 | 广东美的制冷设备有限公司 | Control method, control device, refrigeration equipment and computer readable storage medium |
| CN108800563A (en) * | 2018-06-25 | 2018-11-13 | 佛山光腾新能源股份有限公司 | A kind of ultra-low temperature heat pump water heater and its control method for electronic expansion valve |
| CN109442825A (en) * | 2018-09-12 | 2019-03-08 | 广东芬尼科技股份有限公司 | A kind of ultralow temperature frequency conversion heat pump system and its control method and device |
| CN109612174A (en) * | 2018-12-12 | 2019-04-12 | 广东智科电子股份有限公司 | A kind of control method and its device of electric expansion valve |
| CN110030692A (en) * | 2019-04-03 | 2019-07-19 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under low temperature and low humidity heating condition |
| CN110440420A (en) * | 2019-07-31 | 2019-11-12 | 广东志高暖通设备股份有限公司 | A kind of control method of the electric expansion valve of module water dispenser |
| CN111854032A (en) * | 2020-07-13 | 2020-10-30 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, control method of air conditioner and air conditioner |
| CN112443883A (en) * | 2019-08-28 | 2021-03-05 | 青岛海尔新能源电器有限公司 | Electronic expansion valve control method and device and heat pump unit |
| CN112710071A (en) * | 2020-12-28 | 2021-04-27 | 宁波奥克斯电气股份有限公司 | Method and device for controlling adjusting speed of electronic expansion valve and multi-split air conditioning system |
| CN115164462A (en) * | 2022-06-01 | 2022-10-11 | 广东芬尼科技股份有限公司 | Control method and device of electronic expansion valve, readable storage medium and heat pump system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401523A (en) * | 2011-11-29 | 2012-04-04 | 宁波奥克斯电气有限公司 | Control method for heating operation of inverter air conditioner by electronic expansion valve |
| CN102645026A (en) * | 2012-04-23 | 2012-08-22 | 宁波奥克斯空调有限公司 | Control method for electronic expansion valve of heat pump water heater |
-
2016
- 2016-01-06 CN CN201610014120.6A patent/CN105674649A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401523A (en) * | 2011-11-29 | 2012-04-04 | 宁波奥克斯电气有限公司 | Control method for heating operation of inverter air conditioner by electronic expansion valve |
| CN102645026A (en) * | 2012-04-23 | 2012-08-22 | 宁波奥克斯空调有限公司 | Control method for electronic expansion valve of heat pump water heater |
Non-Patent Citations (2)
| Title |
|---|
| 刘亚兵等: ""电子膨胀阀常见故障分析"", 《制冷与空调》 * |
| 陈文勇等: ""制冷系统启动过程电子膨胀阀的控制"", 《上海交通大学学报》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062580A (en) * | 2017-03-21 | 2017-08-18 | 珠海格力电器股份有限公司 | It is a kind of to reduce the control method and multi-gang air-conditioner of noise of indoor unit of air conditioner |
| CN107144055B (en) * | 2017-04-21 | 2019-07-23 | 青岛海尔空调器有限总公司 | The control method and air conditioner for preventing electric expansion valve from drifting about |
| CN107144055A (en) * | 2017-04-21 | 2017-09-08 | 青岛海尔空调器有限总公司 | Prevent control method and air conditioner that electric expansion valve drifts about |
| CN107543283A (en) * | 2017-08-18 | 2018-01-05 | 广东美的暖通设备有限公司 | A kind of control method of air conditioner, control system and air conditioner |
| CN107702270A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力电器股份有限公司 | Control method for electronic expansion valve and device, air-conditioning |
| CN108518807A (en) * | 2018-05-24 | 2018-09-11 | 广东美的制冷设备有限公司 | Control method, control device, refrigeration equipment and computer readable storage medium |
| CN108518807B (en) * | 2018-05-24 | 2020-05-05 | 广东美的制冷设备有限公司 | Control method and control device for refrigeration equipment, refrigeration equipment and computer medium |
| CN108800563A (en) * | 2018-06-25 | 2018-11-13 | 佛山光腾新能源股份有限公司 | A kind of ultra-low temperature heat pump water heater and its control method for electronic expansion valve |
| CN109442825A (en) * | 2018-09-12 | 2019-03-08 | 广东芬尼科技股份有限公司 | A kind of ultralow temperature frequency conversion heat pump system and its control method and device |
| CN109612174A (en) * | 2018-12-12 | 2019-04-12 | 广东智科电子股份有限公司 | A kind of control method and its device of electric expansion valve |
| CN109612174B (en) * | 2018-12-12 | 2021-07-02 | 广东智科电子股份有限公司 | Control method and device of electronic expansion valve |
| CN110030692A (en) * | 2019-04-03 | 2019-07-19 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under low temperature and low humidity heating condition |
| CN110030692B (en) * | 2019-04-03 | 2021-04-20 | 青岛海尔空调器有限总公司 | Control method of air conditioner under low-temperature low-humidity heating working condition |
| CN110440420A (en) * | 2019-07-31 | 2019-11-12 | 广东志高暖通设备股份有限公司 | A kind of control method of the electric expansion valve of module water dispenser |
| CN112443883A (en) * | 2019-08-28 | 2021-03-05 | 青岛海尔新能源电器有限公司 | Electronic expansion valve control method and device and heat pump unit |
| CN111854032A (en) * | 2020-07-13 | 2020-10-30 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, control method of air conditioner and air conditioner |
| CN111854032B (en) * | 2020-07-13 | 2021-09-21 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, control method of air conditioner and air conditioner |
| CN112710071A (en) * | 2020-12-28 | 2021-04-27 | 宁波奥克斯电气股份有限公司 | Method and device for controlling adjusting speed of electronic expansion valve and multi-split air conditioning system |
| CN115164462A (en) * | 2022-06-01 | 2022-10-11 | 广东芬尼科技股份有限公司 | Control method and device of electronic expansion valve, readable storage medium and heat pump system |
| CN115164462B (en) * | 2022-06-01 | 2024-02-06 | 广东芬尼科技股份有限公司 | Control method and device for electronic expansion valve, readable storage medium and heat pump system |
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Application publication date: 20160615 |