CN108758970A - Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method - Google Patents
Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method Download PDFInfo
- Publication number
- CN108758970A CN108758970A CN201810622305.4A CN201810622305A CN108758970A CN 108758970 A CN108758970 A CN 108758970A CN 201810622305 A CN201810622305 A CN 201810622305A CN 108758970 A CN108758970 A CN 108758970A
- Authority
- CN
- China
- Prior art keywords
- temperature sensing
- exhaust temperature
- compressor
- sensing package
- abnormal state
- 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.)
- Granted
Links
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 230000002045 lasting effect Effects 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an abnormal state detection method of an exhaust temperature sensing bulb and a compressor protection method. The abnormal state detection method of the exhaust temperature sensing bulb judges whether the exhaust temperature sensing bulb is abnormal or not through the opening degree of the expansion valve; when the exhaust temperature sensing bulb is judged to be abnormal, the compressor protection method leads the compressor to be in accordance with a given initial opening degree PSThe operation is continued and maintained at the initial opening degree. By adopting the abnormal state detection method of the exhaust gas temperature sensing bulb, the abnormal state of the exhaust gas temperature sensing bulb can be effectively detected. When the exhaust temperature sensing bulb is judged to be abnormal, the compressor protection method of the invention is adopted to provide refrigeration/heating output and enable the compressor to continue to operate, thereby enabling the air conditioner to continue to operate due to the fact that the air conditioner can continue to operateThe compressor can be reliably operated without burning out, and meanwhile, an alarm is given to a user to inform the user that the exhaust temperature sensing bulb is in failure and needs to be maintained in time.
Description
Technical field
The present invention relates to a kind of guard method of compressor, more particularly to a kind of abnormality based on to being vented temperature sensing package
Detection method and implement the method for corresponding safeguard measure to compressor based on the result, belong to technical field of sensory control.
Background technology
The sensor of routine home-use outdoor machine of air-conditioner includes environment temperature sensing package, exhaust temperature sensing package, outer tube temperature sensing package 3 at present
It is a, wherein exhaust temperature sensing package is mainly used to detect delivery temperature, delivery temperature is controlled by controlling the step number of electric expansion valve,
Delivery temperature is set to reach predetermined target value Td_target, still, when delivery temperature because fall off or failure and other reasons cause detection
Delivery temperature deviates actual exhaust air temperature and eventually leads to actual exhaust air temperature then expansion valve may can be caused to turn down always
It is abnormal higher, more than compressor winding can bearing temperature and burn out compressor.
Application No. is the Chinese invention patent applications of CN201711062314.4 to disclose a kind of compressor temperature sensor
Detection method, should detection method includes the following steps：Change the fortune of compressor according to parameter preset in the first preset period of time
Line frequency；Obtain the delivery temperature for the compressor that temperature sensor detects in the second preset period of time；Judging the delivery temperature is
It is no corresponding with the running frequency of the compressor；If so, judging that the temperature sensor is normal；If it is not, judging the temperature
Sensor abnormality.This method by judge delivery temperature and compressor running frequency correspondence come judge detect temperature sensing
Whether device is abnormal.
Invention content
In order to solve in the prior art when delivery temperature because fall off or failure and other reasons cause detection delivery temperature it is inclined
When from actual exhaust air temperature, lead to that actual exhaust air is extremely higher and burns out asking for compressor since the exception of expansion valve turns down
Topic, the present invention provide it is a kind of by expansion valve opening judge temperature sensing package whether the method for exception and the protection of compressor based on this
Method.
Technical scheme is as follows：
The present invention provides a kind of abnormal state detection method of exhaust temperature sensing package, judges exhaust temperature-sensitive by expansion valve opening
Whether packet is abnormal, includes the following steps：
Step 1：After compressor booting operation, judge whether expansion valve reaches lower limit aperture Plow_limitAnd continue T1Time,
If so, step 2 is then carried out, if not, continuing according to normal control；
Step 2：Expansion valve opening is closed to lower limit and lasting T1After time, judge whether delivery temperature meets (Td-
Td_target) < Td1, if so, step 3 is then carried out, if not, continuing according to normal control；
Wherein, TdIt is current exhaust temperature sensing package actual measurement delivery temperature, Td_targetIt is current goal outlet air temperature；Td1It is to work as
Aperture closes the theoretical minimal difference to actual exhaust air temperature when lower limit and target exhaust temperature；
Step 3：It is abnormal to judge that exhaust temperature sensing package occurs.
Further, the lower limit aperture Plow_limitIncluding the lower limit aperture P under refrigeration modeC_low_limitWith heating mould
Lower limit aperture P under formulaH_low_limit, i.e.,：
Refrigeration mode：
Heating mode：
Wherein, F is currently running compressor frequency, TouterIt is current outdoor side environment temperature, TinnerIt is current indoor
Side environment temperature, parameter aC、bC、cC、dC、aH、bH、cH、dH, X1, X2, X3 be the constant being fitted according to experimental test.
Further, the T1Value range be 10-30min.
Further, the Td1Value range be -30-10 DEG C.
The present invention also provides a kind of compressor protection methods, include the abnormal state detection side of above-mentioned exhaust temperature sensing package
Method further includes the following steps 4 after the step 3：
When judging that exhaust temperature sensing package occurs abnormal, compressor is according to a given initial opening PSIt continues to run with,
And it is constant to maintain the initial opening；
The initial opening PSIncluding the initial opening P under refrigeration modeC_SWith the initial opening P under heating modeC_S,
I.e.：
Refrigeration mode：
Heating mode：
Wherein, wherein F is currently running compressor frequency, TouterIt is current outdoor side environment temperature, TinnerIt is to work as
Cup inside environment temperature, parameter aC_S、bC_S、cC_S、dC_S、aH_S、bH_S、cH_S、dH_SIt is to be fitted to obtain according to experimental test
Constant.
Further, further include following steps in the step 4：
Inside machine sends out alarm, informs that user is vented temperature sensing package and breaks down, needs on-call maintenance.
Beneficial effects of the present invention are as follows：
By using the abnormal state detection method of the exhaust temperature sensing package of the present invention, exhaust temperature sensing package can be effectively detected
Abnormality.When judging that exhaust temperature sensing package is abnormal, by using the compressor protection method of the present invention, system is provided
Cold/heating capacity output, allows air-conditioning to continue reliability service and sends out alarm without burning out compressor, while to user, inform
User is vented temperature sensing package and breaks down, and needs on-call maintenance.
Description of the drawings
Fig. 1 is the overview flow chart of compressor protection method of the present invention.
Specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
The overall procedure of compressor protection method of the present invention is as shown in Figure 1 comprising the exhaust temperature sensing package of the present invention
Abnormal state detection method.This method is specific as follows：
1, each model machine, can be by testing the electric expansion valve for determining that it can guarantee compressor reliability in the design phase
Lower limit aperture Plow_limit, lower limit aperture Plow_limitCorresponding system exhaust is the upper limit delivery temperature that compressor can be born,
Expansion valve opening is less than lower limit aperture P for a long timelow_limitWhen operation, the damage of compressor can be led to, the lower limit aperture is available
Following formula indicates：
Refrigeration mode：
Heating mode：
Wherein：F represents currently running compressor frequency；TouterRepresent current outdoor side environment temperature；TinnerRepresentative is worked as
Cup inside environment temperature；Parameter aC、bC、cC、dC、aH、bH、cH、dH, X1, X2, X3 be constant value, be fitted according to experimental test
It arrives.
2, after booting operation, if since target exhaust temperature is not achieved always in delivery temperature, electric expansion valve is caused to be opened
Degree turns down always, arrives lower limit aperture until closing, and continue for T1Time then enters delivery temperature and judges；
3, aperture closes to lower limit and continue for T1After time, (T is judgedd-Td_target) size, if (Td-Td_target) <
Td1, then judge exhaust temperature sensing package detection temperature value T at this timedThere is exception, which detects temperature value TdIt cannot represent
Actual outlet air temperature, Td1It is the theoretical lowest difference of actual exhaust air temperature and target exhaust temperature when aperture is closed to lower limit
Value, the parameter are rule of thumb formulated, such as (- 30 DEG C~10 DEG C) range.
It should be noted that lower limit aperture is to be determined according to the limit delivery temperature that compressor can be born the design phase,
It is generally believed that when aperture has closed lower limit, delivery temperature should be very high, and is far longer than current target exhaust, but
Be, if not only be vented temperature sensing package feedback detection temperature it is not high, and also have a distance from target exhaust temperature, then just
May determine that the temperature value that detects of exhaust temperature sensing package is not real delivery temperature at this time, it is possible to occur temperature sensing package loosen or
The phenomenon that person's temperature sensing package is damaged.
4, it when judging that exhaust temperature sensing package detected value occurs abnormal, needs to execute two operations at this time：1) inwardly machine is sent out
Go out alarm, tells user to be vented temperature sensing package and break down, need on-call maintenance；2) compressor continues to run with, but aperture is not pressed
It is controlled according to delivery temperature, but according to a given initial opening PSOperation, and maintain the aperture and remain unchanged；
Initial opening PSIt can be determined in the design phase by testing, calculation formula is as follows：
Refrigeration mode：
Heating mode：
Wherein：Parameter aC_S、bC_S、cC_S、dC_S、aH_S、bH_S、cH_S、dH_SFor constant value, it is fitted according to experimental test
It arrives.
In the method for the present invention, T1Value general range is (10-30) min；Td1Value is generally (- 30-10) DEG C；TdTable
Show current temperature sensing package actual measurement delivery temperature, Td-targetIndicate current current outlet air temperature.
In conclusion the abnormal state detection method of the exhaust temperature sensing package of the present invention judges air conditioning chamber by expansion valve opening
Whether outer machine sense exhaust thermometer bulb is abnormal, when judging that exhaust temperature sensing package is abnormal, is protected by using the compressor of the present invention
Maintaining method, provide refrigerating/heating amount output, so that compressor is continued to run with, to make air-conditioning because can continue reliability service without
Compressor can be burnt out, while alarm is sent out to user, informs that user is vented temperature sensing package and breaks down, needs on-call maintenance.
The only a kind of embodiment referred in the above embodiment, should not become limitation of the present invention.It is specifically used
Parameters in the process can be adjusted according to actual demand.
Claims (6)
1. a kind of abnormal state detection method of exhaust temperature sensing package, it is characterised in that：Judge exhaust temperature-sensitive by expansion valve opening
Whether packet is abnormal, includes the following steps：
Step 1：After compressor booting operation, judge whether expansion valve reaches lower limit aperture Plow_limitAnd continue T1Time, if so,
Step 2 is then carried out, if not, continuing according to normal control；
Step 2：Expansion valve opening is closed to lower limit and lasting T1After time, judge whether delivery temperature meets (Td-Td_target) <
Td1, if so, step 3 is then carried out, if not, continuing according to normal control；
Wherein, TdIt is current exhaust temperature sensing package actual measurement delivery temperature, Td_targetIt is current goal outlet air temperature；Td1It is to work as aperture
The theoretical minimal difference of actual exhaust air temperature and target exhaust temperature when closing lower limit；
Step 3：It is abnormal to judge that exhaust temperature sensing package occurs.
2. the abnormal state detection method of exhaust temperature sensing package according to claim 1, it is characterised in that：The lower limit aperture
Plow_limitIncluding the lower limit aperture P under refrigeration modeC_low_limitWith the lower limit aperture P under heating modeH_low_limit, i.e.,：
Refrigeration mode：
Heating mode：
Wherein, F is currently running compressor frequency, TouterIt is current outdoor side environment temperature, TinnerIt is current indoor side ring
Border temperature, parameter aC、bC、cC、dC、aH、bH、cH、dH, X1, X2, X3 be the constant being fitted according to experimental test.
3. the abnormal state detection method of exhaust temperature sensing package according to claim 1 or 2, it is characterised in that：The T1Take
It is worth ranging from 10-30min.
4. the abnormal state detection method of exhaust temperature sensing package according to claim 1 or 2, it is characterised in that：The Td1's
Value range is -30-10 DEG C.
5. a kind of compressor protection method, it is characterised in that：Including the exhaust temperature-sensitive described in any one of Claims 1-4
The abnormal state detection method of packet further includes the following steps 4 after the step 3：
When judging that exhaust temperature sensing package occurs abnormal, compressor is according to a given initial opening PSIt continues to run with, and ties up
It holds constant in the initial opening；
The initial opening PSIncluding the initial opening P under refrigeration modeC_SWith the initial opening P under heating modeC_S, i.e.,：
Refrigeration mode：
Heating mode：
Wherein, wherein F is currently running compressor frequency, TouterIt is current outdoor side environment temperature, TinnerIt is current indoor
Side environment temperature, parameter aC_S、bC_S、cC_S、dC_S、aH_S、bH_S、cH_S、dH_SIt is the constant being fitted according to experimental test.
6. a kind of compressor protection method according to claim 5, it is characterised in that：Further include as follows in the step 4
Step：Inside machine sends out alarm, informs that user is vented temperature sensing package and breaks down, needs on-call maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622305.4A CN108758970B (en) | 2018-06-15 | 2018-06-15 | Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810622305.4A CN108758970B (en) | 2018-06-15 | 2018-06-15 | Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108758970A true CN108758970A (en) | 2018-11-06 |
| CN108758970B CN108758970B (en) | 2020-05-12 |
Family
ID=63978248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810622305.4A Active CN108758970B (en) | 2018-06-15 | 2018-06-15 | Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108758970B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506317A (en) * | 2018-11-08 | 2019-03-22 | 珠海格力电器股份有限公司 | Compressor exhaust fault detection method, compressor and air conditioner |
| CN110925948A (en) * | 2019-12-12 | 2020-03-27 | 宁波奥克斯电气股份有限公司 | A detection method, system and air conditioner |
| CN111043727A (en) * | 2019-12-30 | 2020-04-21 | Tcl空调器(中山)有限公司 | Temperature sensing bulb fault detection method, device, air conditioner and computer storage medium |
| CN111306697A (en) * | 2020-02-27 | 2020-06-19 | 青岛海尔空调器有限总公司 | Debugging method of variable frequency air conditioner |
| CN112944577A (en) * | 2021-03-18 | 2021-06-11 | 宁波奥克斯电气股份有限公司 | Compressor frequency control method and device and air conditioner |
| CN113639398A (en) * | 2021-08-05 | 2021-11-12 | 珠海格力电器股份有限公司 | Protection method of refrigeration system during abnormal exhaust detection of compressor and air conditioning unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178236A (en) * | 2006-11-10 | 2008-05-14 | 海尔集团公司 | Air conditioner malfunction detection method and system |
| KR20110105230A (en) * | 2010-03-18 | 2011-09-26 | 엘지전자 주식회사 | Air conditioner and its operation method |
| CN106052231A (en) * | 2016-07-04 | 2016-10-26 | 青岛海尔空调器有限总公司 | Method for adjusting electronic expansion valve of air conditioner |
| CN106257161A (en) * | 2016-07-27 | 2016-12-28 | 海信（山东）空调有限公司 | Cooler compressor Anti-burnout control method and air-conditioner |
| CN107631413A (en) * | 2017-09-20 | 2018-01-26 | 广东美的制冷设备有限公司 | Exhaust gas temperature sensor releases fault detection method and device and air conditioner |
-
2018
- 2018-06-15 CN CN201810622305.4A patent/CN108758970B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178236A (en) * | 2006-11-10 | 2008-05-14 | 海尔集团公司 | Air conditioner malfunction detection method and system |
| KR20110105230A (en) * | 2010-03-18 | 2011-09-26 | 엘지전자 주식회사 | Air conditioner and its operation method |
| CN106052231A (en) * | 2016-07-04 | 2016-10-26 | 青岛海尔空调器有限总公司 | Method for adjusting electronic expansion valve of air conditioner |
| CN106257161A (en) * | 2016-07-27 | 2016-12-28 | 海信（山东）空调有限公司 | Cooler compressor Anti-burnout control method and air-conditioner |
| CN107631413A (en) * | 2017-09-20 | 2018-01-26 | 广东美的制冷设备有限公司 | Exhaust gas temperature sensor releases fault detection method and device and air conditioner |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506317A (en) * | 2018-11-08 | 2019-03-22 | 珠海格力电器股份有限公司 | Compressor exhaust fault detection method, compressor and air conditioner |
| CN109506317B (en) * | 2018-11-08 | 2020-01-31 | 珠海格力电器股份有限公司 | compressor exhaust fault detection method, compressor and air conditioner |
| CN110925948A (en) * | 2019-12-12 | 2020-03-27 | 宁波奥克斯电气股份有限公司 | A detection method, system and air conditioner |
| CN111043727A (en) * | 2019-12-30 | 2020-04-21 | Tcl空调器(中山)有限公司 | Temperature sensing bulb fault detection method, device, air conditioner and computer storage medium |
| CN111306697A (en) * | 2020-02-27 | 2020-06-19 | 青岛海尔空调器有限总公司 | Debugging method of variable frequency air conditioner |
| CN112944577A (en) * | 2021-03-18 | 2021-06-11 | 宁波奥克斯电气股份有限公司 | Compressor frequency control method and device and air conditioner |
| CN112944577B (en) * | 2021-03-18 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | A compressor frequency control method, device and air conditioner |
| CN113639398A (en) * | 2021-08-05 | 2021-11-12 | 珠海格力电器股份有限公司 | Protection method of refrigeration system during abnormal exhaust detection of compressor and air conditioning unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108758970B (en) | 2020-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108758970A (en) | Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method | |
| CN104964498B (en) | Control method of electronic expansion valve of refrigeration system and refrigeration system | |
| CN106568170B (en) | Air conditioner and heating cold-proof device and method thereof | |
| US10724766B2 (en) | Refrigeration cycle apparatus | |
| CN104728999B (en) | anti-freezing control method and device for heat exchanger of air conditioner | |
| US20200318840A1 (en) | Air conditioning system | |
| CN104990232B (en) | Control method, control device and the control system of air conditioner | |
| JP2002005548A (en) | Household electrical appliance in which combustible refrigerant is used | |
| CN104819547A (en) | Fluorine-lacking detection and protection method and system during startup of variable frequency air conditioning system | |
| CN109210686A (en) | A kind of control method and air conditioner of the anti-cold wind of air-conditioning | |
| CN112393377A (en) | Fault judgment method and air conditioner | |
| CN113203179B (en) | Sensor falling judgment and expansion valve control method and device and air conditioner | |
| CN104896669A (en) | Air conditioner and method for protecting and controlling same | |
| CN107289599A (en) | A kind of apparatus and method for detecting air conditioner coolant amount of leakage | |
| CN109724207A (en) | Air conditioner and control method thereof | |
| CN113639402A (en) | Air conditioner refrigerant leakage detection and discharge method | |
| CN109373540A (en) | A kind of air conditioning control method, system and air conditioner | |
| CN106403429B (en) | The liquid impact prevention control method and control device and air-conditioning system of air-conditioning system | |
| CN105890112B (en) | Temperature sensor drift detection method, processor and air-conditioning in outdoor unit heat exchanger | |
| CN114183883A (en) | Detection method of four-way valve and air conditioner | |
| KR20180075175A (en) | Air-conditioner and Method thereof | |
| JP2002071188A (en) | Abnormal heating medium supply detection apparatus | |
| CN108917091B (en) | Intelligent testing method for air conditioner and air conditioner thereof | |
| CN110822653A (en) | Air conditioner refrigerant leakage detection method and air conditioner | |
| KR100828028B1 (en) | Refrigerator with fire protection device and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |