CN104534759A - Exhausting assisted method for controlling electronic expansion valve - Google Patents
Exhausting assisted method for controlling electronic expansion valve Download PDFInfo
- Publication number
- CN104534759A CN104534759A CN201410768224.7A CN201410768224A CN104534759A CN 104534759 A CN104534759 A CN 104534759A CN 201410768224 A CN201410768224 A CN 201410768224A CN 104534759 A CN104534759 A CN 104534759A
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- China
- Prior art keywords
- expansion valve
- electric expansion
- temperature
- difference
- heat pump
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an exhausting assisted method for controlling an electronic expansion valve. The method is characterized by comprising the following steps: calculating an actual opening degree of the electronic expansion valve by a heat pump controller through a back temperature and a coiled pipe temperature of a detection system and controlling the electronic expansion valve; and at a time period 3-10 minutes after a compressor is opened and after the compressor is opened for 10 minutes, adjusting the electronic expansion valve by different manners according to a target exhausting temperature and an actually-measured exhausting temperature. According to the method, the opening degree is automatically adjusted in an assisted manner according to the exhausting temperature on the basis of previous superheat degree control so that a heat pump system can work efficiently all the time, and the problem that the electronic expansion valve cannot do corresponding movement when a working condition of a set is changed is solved; the setting of time intervals is adjusted so that the defrosting time of the set is effectively prolonged and the defrosting efficiency of the set is reduced; the efficient operation of the heat pump system is facilitated. The exhausting assisted method for controlling the electronic expansion valve, disclosed by the invention, can be widely applied to the field of heat pump control.
Description
Technical field
The present invention relates to heat pump control field, especially a kind of method being vented auxiliary control electric expansion valve.
Background technology
Conventional heat pump system regulates electric expansion valve according to system overheat degree is single usually, its control method is the actual aperture being calculated electric expansion valve by detection system suction temperature and coil temperature, and then control electric expansion valve carries out corresponding action, the every 30s of controller controls primary electron expansion valve and carries out action according to the current actual aperture calculated, but such control method in use still there will be following problem:
1, when unit variable parameter operation, there is the problem of being failure to actuate in electric expansion valve sometimes, makes unit cannot be operated in efficient operating point all the time;
2, make unit be easy to enter defrosting mode, unit defrosting is frequent, not only increases units consumption, and reduces unit efficiency.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the invention is: provide a kind of exhaust realizing efficient work to assist the method controlling electric expansion valve.
The technical solution adopted in the present invention is: a kind of method being vented auxiliary control electric expansion valve, comprises the following steps:
A, heat pump controller calculate the actual aperture of electric expansion valve by detection system suction temperature and coil temperature, and then control electric expansion valve;
B, compressor open after 3-10 minutes section, heat pump controller regulates electric expansion valve according to the difference of the secured adjusted time interval, target exhaust temperature and actual measurement delivery temperature, and carries out the correction of adjustment step number according to the fixing step number regulating time cycle to driving the stepper motor of electric expansion valve;
C, after compressor opens 10 minutes, heat pump controller is according to the difference adjusted time interval of target exhaust temperature and actual measurement delivery temperature and regulate step number, and then regulates electric expansion valve.
Further, the length in the secured adjusted time interval described in described step B is 30 seconds.
Further, the length of fixing the step number regulating time cycle described in described step B is 90 seconds.
Further, in described step B, if target exhaust temperature is less than 5 DEG C with the difference of actual measurement delivery temperature, then stable state is adopted to control:
S1, no longer carry out the correction of adjustment step number;
If S2 difference is not more than 2 DEG C, then maintain current state; If difference is greater than 2 DEG C, then the length in the secured adjusted time interval is set to 180 seconds.
Further, in described step C, difference and the regulating time interval of target exhaust temperature and actual measurement delivery temperature and regulate the pass of step number to be: difference is larger, then regulating time interval is shorter, adjustment step number is larger; Otherwise then regulating time interval is longer, adjustment step number is less.
Further, in described step C, if target exhaust temperature is not more than 2 DEG C with the difference of actual measurement delivery temperature, then maintain current state.
Further, in described steps A, heat pump controller controlled primary electron expansion valve every 30 seconds.
The invention has the beneficial effects as follows: the inventive method controls on basis in original degree of superheat, according to the automatic auxiliary adjustment electronic expansion valve opening of delivery temperature, heat pump is made to always work in most efficient operating point, when solving source pump change operating mode, electric expansion valve does not carry out the problem of corresponding actions; And by the setting at regulating time interval, the time making unit enter defrosting effectively extends, decrease unit defrosting frequency, reduce load, be conducive to the Effec-tive Function of heat pump.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the inventive method.
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, a kind of method being vented auxiliary control electric expansion valve, comprises the following steps:
A, heat pump controller calculate the actual aperture of electric expansion valve by detection system suction temperature and coil temperature, and then control electric expansion valve;
Be further used as preferred embodiment, heat pump controller controlled primary electron expansion valve every 30 seconds.
The following formula of its concrete control mode:
P=P
0+△P
△ P=KP* (SH
on average-TSH)
Wherein:
P is the actual aperture of electric expansion valve; P
0for electric expansion valve just aperture; △ P is electronic expansion valve opening variable quantity;
SH
on averagefor the mean value of the degree of superheat actual in 30s, SH=TS-TC, suction temperature: TS, coil temperature: TC;
TSH: target superheat degree;
KP is coefficient; Work as SH
on averagewhen≤-1, KP=3; As-1 < SH
on averagewhen≤0, KP=2; Work as SH
on averageduring > 0, KP=1.
B, compressor open after 3-10 minutes section, heat pump controller regulates electric expansion valve according to the difference of the secured adjusted time interval, target exhaust temperature and actual measurement delivery temperature, and carries out the correction of adjustment step number according to the fixing step number regulating time cycle to driving the stepper motor of electric expansion valve;
Such as, when the temperature difference is 20 DEG C, every 0.5min regulates EEV to regulate step number to be 20, and regulating time is spaced apart 0.5min; The EEV that be accumulated to 1.5min more former adjustment step number increases again at every turn regulates step number to be 15.
Be further used as preferred embodiment, the length in the secured adjusted time interval described in described step B is 30 seconds.
Be further used as preferred embodiment, the length of fixing the step number regulating time cycle described in described step B is 90 seconds.
Be further used as preferred embodiment, in described step B, if target exhaust temperature is less than 5 DEG C with the difference of actual measurement delivery temperature, namely the absolute value of condition value X is less than 5 DEG C, then adopt stable state to control, and is be less than or equal to the form of 5 DEG C with reference to the temperature difference in table 2.
S1, no longer carry out the correction of adjustment step number;
If S2 difference is not more than 2 DEG C, then maintain current state; If difference is greater than 2 DEG C, then the length in the secured adjusted time interval is set to 180 seconds.
C, after compressor opens 10 minutes, heat pump controller is according to the difference adjusted time interval of target exhaust temperature and actual measurement delivery temperature and regulate step number, and then regulates electric expansion valve.
Such as, when the temperature difference is 15 DEG C, regulating time is spaced apart 1min, and EEV regulates step number to be 13.
Be further used as preferred embodiment, in described step C, difference and the regulating time interval of target exhaust temperature and actual measurement delivery temperature and regulate the pass of step number to be: difference is larger, then regulating time interval is shorter, adjustment step number is larger; Otherwise then regulating time interval is longer, adjustment step number is less.
Be further used as preferred embodiment, in described step C, if target exhaust temperature is not more than 2 DEG C with the difference of actual measurement delivery temperature, then maintain current state.
More than that better enforcement of the present invention is 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 prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (7)
1. the auxiliary method controlling electric expansion valve of exhaust, is characterized in that: comprise the following steps:
A, heat pump controller calculate the actual aperture of electric expansion valve by detection system suction temperature and coil temperature, and then control electric expansion valve;
B, compressor open after 3-10 minutes section, heat pump controller regulates electric expansion valve according to the difference of the secured adjusted time interval, target exhaust temperature and actual measurement delivery temperature, and carries out the correction of adjustment step number according to the fixing step number regulating time cycle to driving the stepper motor of electric expansion valve;
C, after compressor opens 10 minutes, heat pump controller is according to the difference adjusted time interval of target exhaust temperature and actual measurement delivery temperature and regulate step number, and then regulates electric expansion valve.
2. a kind of method being vented auxiliary control electric expansion valve according to claim 1, is characterized in that: the length in the secured adjusted time interval described in described step B is 30 seconds.
3. a kind of method being vented auxiliary control electric expansion valve according to claim 1, is characterized in that: the length of fixing the step number regulating time cycle described in described step B is 90 seconds.
4. a kind of method being vented auxiliary control electric expansion valve according to claim 1, is characterized in that: in described step B, if target exhaust temperature is less than 5 DEG C with the difference of actual measurement delivery temperature, then adopts stable state to control:
S1, no longer carry out the correction of adjustment step number;
If S2 difference is not more than 2 DEG C, then maintain current state; If difference is greater than 2 DEG C, then the length in the secured adjusted time interval is set to 180 seconds.
5. a kind of method being vented auxiliary control electric expansion valve according to claim 1, it is characterized in that: in described step C, difference and the regulating time interval of target exhaust temperature and actual measurement delivery temperature and regulate the pass of step number to be: difference is larger, then regulating time interval is shorter, adjustment step number is larger; Otherwise then regulating time interval is longer, adjustment step number is less.
6. a kind of method being vented auxiliary control electric expansion valve according to claim 5, is characterized in that: in described step C, if target exhaust temperature is not more than 2 DEG C with the difference of actual measurement delivery temperature, then maintains current state.
7. a kind of method being vented auxiliary control electric expansion valve according to claim 1, it is characterized in that: in described steps A, heat pump controller controlled primary electron expansion valve every 30 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768224.7A CN104534759B (en) | 2014-12-11 | 2014-12-11 | Exhausting assisted method for controlling electronic expansion valve |
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|---|---|---|---|
| CN201410768224.7A CN104534759B (en) | 2014-12-11 | 2014-12-11 | Exhausting assisted method for controlling electronic expansion valve |
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| CN104534759A true CN104534759A (en) | 2015-04-22 |
| CN104534759B CN104534759B (en) | 2017-01-25 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180537A (en) * | 2015-09-09 | 2015-12-23 | 杭州先途电子有限公司 | Defrosting control method based on opening degree of electronic expansion valve |
| CN106440592A (en) * | 2016-11-10 | 2017-02-22 | 广东美的暖通设备有限公司 | Adjusting method and adjusting system of air conditioner electronic expansion valve, and air conditioner |
| CN106904058A (en) * | 2017-03-10 | 2017-06-30 | 安徽江淮汽车集团股份有限公司 | Control method for electronic expansion valve and device in heat pump type air conditioning system |
| 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 |
| CN110608519A (en) * | 2019-09-26 | 2019-12-24 | 广东美的制冷设备有限公司 | Air conditioner control method and system and air conditioner |
| CN110986333A (en) * | 2019-12-26 | 2020-04-10 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
| CN112254311A (en) * | 2020-10-14 | 2021-01-22 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve and air conditioner |
| CN112484348A (en) * | 2020-11-12 | 2021-03-12 | 珠海格力电器股份有限公司 | Control method and device of electronic expansion valve and electrical equipment |
| CN114234494A (en) * | 2021-12-24 | 2022-03-25 | 佛山市顺德区和而泰电子科技有限公司 | Electronic expansion valve control method of heat pump system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019427A (en) * | 1996-07-04 | 1998-01-23 | Hitachi Ltd | Air conditioner with diagnosis of trouble |
| 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 |
| CN103206820A (en) * | 2013-04-27 | 2013-07-17 | 海尔集团公司 | Expansion valve opening controlling method for preventing oscillating of expansion valve |
| US20140047852A1 (en) * | 2012-08-14 | 2014-02-20 | Samsung Electronics Co., Ltd. | Air conditioner and control method thereof |
| CN104110768A (en) * | 2013-05-30 | 2014-10-22 | 广东美的制冷设备有限公司 | Control method and circuit for electronic expansion valve of air conditioner |
-
2014
- 2014-12-11 CN CN201410768224.7A patent/CN104534759B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019427A (en) * | 1996-07-04 | 1998-01-23 | Hitachi Ltd | Air conditioner with diagnosis of trouble |
| 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 |
| US20140047852A1 (en) * | 2012-08-14 | 2014-02-20 | Samsung Electronics Co., Ltd. | Air conditioner and control method thereof |
| CN103206820A (en) * | 2013-04-27 | 2013-07-17 | 海尔集团公司 | Expansion valve opening controlling method for preventing oscillating of expansion valve |
| CN104110768A (en) * | 2013-05-30 | 2014-10-22 | 广东美的制冷设备有限公司 | Control method and circuit for electronic expansion valve of air conditioner |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180537B (en) * | 2015-09-09 | 2018-02-02 | 杭州先途电子有限公司 | Defrosting control method based on electronic expansion valve opening |
| CN105180537A (en) * | 2015-09-09 | 2015-12-23 | 杭州先途电子有限公司 | Defrosting control method based on opening degree of electronic expansion valve |
| CN106440592A (en) * | 2016-11-10 | 2017-02-22 | 广东美的暖通设备有限公司 | Adjusting method and adjusting system of air conditioner electronic expansion valve, and air conditioner |
| CN106440592B (en) * | 2016-11-10 | 2019-02-26 | 广东美的暖通设备有限公司 | A kind of adjusting method of air conditioner electronic expansion valve, system and air-conditioning |
| CN106904058A (en) * | 2017-03-10 | 2017-06-30 | 安徽江淮汽车集团股份有限公司 | Control method for electronic expansion valve and device in heat pump type air conditioning system |
| CN106904058B (en) * | 2017-03-10 | 2019-12-31 | 安徽江淮汽车集团股份有限公司 | Control method and device for electronic expansion valve in heat pump air conditioning system |
| 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 |
| 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 |
| CN110608519A (en) * | 2019-09-26 | 2019-12-24 | 广东美的制冷设备有限公司 | Air conditioner control method and system and air conditioner |
| CN110986333A (en) * | 2019-12-26 | 2020-04-10 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
| CN112254311A (en) * | 2020-10-14 | 2021-01-22 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve and air conditioner |
| CN112254311B (en) * | 2020-10-14 | 2021-10-08 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve and air conditioner |
| CN112484348A (en) * | 2020-11-12 | 2021-03-12 | 珠海格力电器股份有限公司 | Control method and device of electronic expansion valve and electrical equipment |
| CN114234494A (en) * | 2021-12-24 | 2022-03-25 | 佛山市顺德区和而泰电子科技有限公司 | Electronic expansion valve control method of heat pump system |
| CN114234494B (en) * | 2021-12-24 | 2023-09-29 | 佛山市顺德区和而泰电子科技有限公司 | Electronic expansion valve control method of heat pump system |
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| CN104534759B (en) | 2017-01-25 |
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