CN107642863B - Air conditioner opens control method when heating mode - Google Patents
Air conditioner opens control method when heating mode Download PDFInfo
- Publication number
- CN107642863B CN107642863B CN201710651973.5A CN201710651973A CN107642863B CN 107642863 B CN107642863 B CN 107642863B CN 201710651973 A CN201710651973 A CN 201710651973A CN 107642863 B CN107642863 B CN 107642863B
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- heating mode
- tension switch
- control method
- low tension
- 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.)
- Active
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Control method when heating mode is opened the present invention relates to a kind of air conditioner; it is not only able to shut down air conditioner in time in cold medium shortage; to protect compressor injury-free; and in the case where outdoor temperature is low, refrigerant is sufficient; it can effectively avoid because low tension switch, which is in an off state, causes air conditioner to be shut down the case where, so that air conditioner normal operation be effectively ensured.
Description
Technical field
The present invention relates to air conditioners, control method when being especially a kind of air conditioner unlatching heating mode.
Background technique
Existing air conditioner is protection compressor, avoids compressor from operating for a long time in the case where cold medium shortage, causes to press
The damage of contracting machine, generally installs low tension switch all at the air entry of compressor, for detecting pressure of inspiration(Pi), when low tension switch detects
When the suction pressure of compressor arrived is lower than some value, low tension switch just be will disconnect, when controller receives low tension switch disconnection
After signal, low-voltage variation control will be carried out to air conditioner according to certain control method.Currently, existing air conditioner is in outdoor
When unlatching heating mode is heated in the lower situation of temperature, often first shielding low-voltage switch detection a period of time, make low
It compresses switch even at off-state, controller will not carry out low-voltage variation control, but this way can make air conditioner
It cannot be shut down in time in cold medium shortage, to be easy to cause to damage to compressor；In addition, when air-conditioner coolant abundance, if
Outdoor temperature is too low, then when air conditioner open duration for being heated of heating mode be more than shielding low-voltage protection when
Between after, the suction pressure of compressor that low tension switch detects be possible to still can be lower than low tension switch default connection value, at this time
Low tension switch will be in an off state, and be not normally functioning so as to cause air conditioner shutdown.
Summary of the invention
The technical problem to be solved by the present invention is to provide control method when a kind of air conditioner unlatching heating mode, not only
Air conditioner can be made to shut down in time in cold medium shortage, to protect compressor injury-free, and outdoor temperature is low, refrigerant
In the case where abundance, can effectively it avoid because low tension switch, which is in an off state, causes air conditioner to be shut down the case where, from
And air conditioner normal operation is effectively ensured.
In order to solve the above technical problems, the technical scheme is that providing when a kind of air conditioner opens heating mode
Control method, wherein it the following steps are included:
S1, before compressor start, first detect low tension switch state,
If low tension switch is in an off state, do not start compressor, and executes step S4-1；
If low tension switch is in the conductive state, S2 is thened follow the steps；
S2, shielding low-voltage switch detection, then start compressor, and make compressor one section of continuous service in a heating mode
Preset time t 1；
S3, low tension switch state is detected again, while detecting outdoor heat exchanger coil temperature T1,
If low tension switch is in an off state, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, then executes
Step S4-1, it is no to then follow the steps S4-2；
S4-1, air conditioner shut down and report low voltage failure；
S4-2, run air conditioner into normal heating mode.
Air conditioner of the present invention opens control method when heating mode, wherein when air conditioner executes step S3,
If low tension switch is in an off state, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, then air conditioner is being held
It is further comprising the steps of before row step S4-1:
S3-1, air conditioner shut down one section of preset time t 2, and record machine stop times C1；
S3-2, the machine stop times C1 of record and default machine stop times C are compared,
If C1 < C, thens follow the steps S1；
If C1=C thens follow the steps S4-1.
Air conditioner of the present invention opens control method when heating mode, wherein the value of default machine stop times C is 2
Or 3.
Air conditioner of the present invention opens control method when heating mode, wherein preset temperature value T is -25 DEG C.
Air conditioner of the present invention opens control method when heating mode, wherein preset time t 1 is 5~7 minutes.
Air conditioner of the present invention opens control method when heating mode, wherein stating preset time t 2 is 3~5 points
Clock.
After above method, compared with prior art, the air condition of that present invention opens control method tool when heating mode
It has the advantage that firstly, by first detecting low tension switch state before compressor start, therefore, it is determined that whether air-conditioner coolant fills
Foot, if low tension switch disconnects at this time, it indicate that air-conditioner coolant is insufficient, at this moment low voltage failure is shut down and reported to air conditioner, pressure
Contracting machine would not start, in this way can be to avoid compressor runs the long period in the case where cold medium shortage and compressor is caused to damage
The case where hurting；Secondly, first shielding low-voltage switch detection, then starts compressor, and make one section of compressor continuous service in advance
If the time, low tension switch state is then detected again, while detecting outdoor heat exchanger coil temperature, is judging low tension switch shape in this way
On the basis of state, by increasing the judgement of outdoor heat exchanger coil temperature, can effectively it be kept away in the case where ensuring refrigerant abundance
Exempt from the case where causing air conditioner to be shut down due to ambient temperature is too low to make low tension switch still in off-state, to effectively protect
Air conditioner is demonstrate,proved to operate normally.
Detailed description of the invention
The control flow chart of control method when Fig. 1 is the air condition of that present invention unlatching heating mode.
Specific embodiment
Control method when opening heating mode to the air condition of that present invention With reference to embodiment is made further
It is described in detail.
As shown in Figure 1, the air condition of that present invention open heating mode when control method the following steps are included:
S1, before compressor start, first detect low tension switch state,
If low tension switch is in an off state, do not start compressor, and executes step S4-1；
If low tension switch is in the conductive state, S2 is thened follow the steps；
S2, shielding low-voltage switch detection, then start compressor, and make compressor one section of continuous service in a heating mode
Preset time t 1, wherein preset time t 1 is 5~7 minutes, preferably 7 minutes；
S3, low tension switch state is detected again, while detecting outdoor heat exchanger coil temperature T1,
If low tension switch is in an off state, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, then executes
Step S3-1, it is no to then follow the steps S4-2, wherein preset temperature value T is -25 DEG C, and in the present embodiment, low pressure is opened
The cut off value of pass is 0.5bar, and the connection value of low tension switch is 1.5bar；
S3-1, air conditioner shut down one section of preset time t 2, and record machine stop times C1, wherein preset time t 2 is 3~5
Minute, preferably 3 minutes；
S3-2, the machine stop times C1 of record and default machine stop times C are compared, wherein the value of default machine stop times C
It is 2 or 3, preferably 3；
If C1 < C, thens follow the steps S1；
If C1=C thens follow the steps S4-1；
S4-1, air conditioner shut down and report low voltage failure；
S4-2, run air conditioner into normal heating mode.
For the normal use for guaranteeing air conditioner, after air conditioner shuts down every time, the machine stop times C1 of record needs to reset.
Control method when the air condition of that present invention opens heating mode has the advantage that firstly, by opening in compressor
Low tension switch state is first detected before dynamic, therefore, it is determined that whether air-conditioner coolant is sufficient, if low tension switch disconnects at this time, that is with regard to table
Show air-conditioner coolant deficiency, at this moment low voltage failure is shut down and reported to air conditioner, and compressor would not start, in this way can be to avoid compression
The case where machine runs the long period in the case where cold medium shortage and causes compressor injury generation；Secondly, first shielding low-voltage is opened
Detection is closed, then starts compressor, and make one section of preset time of compressor continuous service, then detects low tension switch state again,
Outdoor heat exchanger coil temperature is detected simultaneously, in this way on the basis of judging low tension switch state, by increasing outdoor heat exchanger
The judgement of coil temperature can effectively avoid making low tension switch because ambient temperature is too low still in the case where ensuring refrigerant abundance
The case where being in an off state and air conditioner caused to be shut down, so that air conditioner normal operation be effectively ensured；Third, step
The setting of S3-1 and S3-2 be not only able to increase air conditioner judge refrigerant whether Chong Zu accuracy, and can be further effective
The case where causing air conditioner to be shut down due to ambient temperature is too low to make low tension switch still in off-state is avoided, thus effectively
Guarantee that air conditioner operates normally.
Above embodiment be only preferred embodiments of the present invention will be described, not to the scope of the present invention into
Row limits, and without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements out should all be fallen into the protection scope that claims of the present invention determines.
Claims (5)
1. a kind of air conditioner opens control method when heating mode, it is characterised in that: it the following steps are included:
S1, before compressor start, first detect low tension switch state,
If low tension switch is in an off state, do not start compressor, and executes step S4-1；
If low tension switch is in the conductive state, S2 is thened follow the steps；
S2, shielding low-voltage switch detection, then start compressor, and preset compressor one section of continuous service in a heating mode
Time t1；
S3, low tension switch state is detected again, while detecting outdoor heat exchanger coil temperature T1,
If low tension switch is in an off state, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, thens follow the steps
S4-1, it is no to then follow the steps S4-2；Wherein, the preset temperature value T is -25 DEG C；
S4-1, air conditioner shut down and report low voltage failure；
S4-2, run air conditioner into normal heating mode.
2. air conditioner according to claim 1 opens control method when heating mode, it is characterised in that: when air conditioner is held
When row step S3, if low tension switch is in an off state, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, that
Air conditioner is further comprising the steps of before executing step S4-1:
S3-1, air conditioner shut down one section of preset time t 2, and record machine stop times C1；
S3-2, the machine stop times C1 of record and default machine stop times C are compared,
If C1 < C, thens follow the steps S1；
If C1=C thens follow the steps S4-1.
3. air conditioner according to claim 2 opens control method when heating mode, it is characterised in that: described preset is stopped
The value of machine number C is 2 or 3.
4. air conditioner according to claim 1 or 2 or 3 opens control method when heating mode, it is characterised in that: described
Preset time t 1 is 5~7 minutes.
5. air conditioner according to claim 2 or 3 opens control method when heating mode, it is characterised in that: described pre-
If time t2 is 3~5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651973.5A CN107642863B (en) | 2017-08-02 | 2017-08-02 | Air conditioner opens control method when heating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651973.5A CN107642863B (en) | 2017-08-02 | 2017-08-02 | Air conditioner opens control method when heating mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107642863A CN107642863A (en) | 2018-01-30 |
| CN107642863B true CN107642863B (en) | 2019-08-16 |
Family
ID=61110576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710651973.5A Active CN107642863B (en) | 2017-08-02 | 2017-08-02 | Air conditioner opens control method when heating mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107642863B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612022B (en) * | 2018-11-28 | 2021-01-26 | 宁波奥克斯电气股份有限公司 | Control method for preventing air conditioner from blocking valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191377Y (en) * | 1994-04-04 | 1995-03-08 | 章斌 | Low-voltage switch discriminating apparatus for air-cooling type central air-conditioner |
| JP2014055771A (en) * | 2013-12-26 | 2014-03-27 | Mitsubishi Electric Corp | Air conditioner |
| CN205448180U (en) * | 2015-11-24 | 2016-08-10 | 上海海立特种制冷设备有限公司 | Bridge crane air conditioner prevents that compressor starts protection device of low pressure |
| CN106352487A (en) * | 2016-09-23 | 2017-01-25 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
-
2017
- 2017-08-02 CN CN201710651973.5A patent/CN107642863B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191377Y (en) * | 1994-04-04 | 1995-03-08 | 章斌 | Low-voltage switch discriminating apparatus for air-cooling type central air-conditioner |
| JP2014055771A (en) * | 2013-12-26 | 2014-03-27 | Mitsubishi Electric Corp | Air conditioner |
| CN205448180U (en) * | 2015-11-24 | 2016-08-10 | 上海海立特种制冷设备有限公司 | Bridge crane air conditioner prevents that compressor starts protection device of low pressure |
| CN106352487A (en) * | 2016-09-23 | 2017-01-25 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107642863A (en) | 2018-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107388721B (en) | Fault repairing method and device for refrigerator air door, refrigerator and computer readable storage medium | |
| CN104728999B (en) | The antifreeze control method and device of heat exchanger of air conditioner | |
| US20190271495A1 (en) | Air conditioner, and device and method for preventing cold air during heating of air conditioner | |
| US11168913B2 (en) | Control method and control device of air conditioner and air conditioner | |
| CN104110780A (en) | Air conditioner and control method and system for electric auxiliary heating thereof | |
| CN107560101B (en) | A kind of fault detection method of air conditioner electronic expansion valve | |
| CN106352489A (en) | Air conditioner fault detecting method and system | |
| US11867421B2 (en) | Air conditioner and control method therefor | |
| CN110793170B (en) | Judgment method for insufficient refrigerant of air conditioning system and air conditioner | |
| CN105757908B (en) | Air-conditioner control method and device | |
| CN109612022B (en) | Control method for preventing air conditioner from blocking valve | |
| CN103575059B (en) | Detecting system and detecting method for faults of refrigerator defrosting system | |
| CN110762782B (en) | Low-temperature dehumidification control method and device and air conditioner | |
| CN102679495A (en) | Compensation starting method of air conditioner | |
| WO2023116463A1 (en) | Control method and apparatus for air conditioner, and air conditioner and storage medium | |
| CN101814717A (en) | Compressor protection method for air conditioner | |
| CN102425839A (en) | Forced defrosting control method for air conditioner | |
| CN105674561A (en) | Heat pump water heater and control method thereof | |
| CN107642863B (en) | Air conditioner opens control method when heating mode | |
| CN107560100B (en) | The control method of air conditioner coolant not foot protection | |
| CN105066370A (en) | Compressor overload protection control method and device and air conditioner | |
| CN109855230B (en) | Air conditioner and overheating prevention protection control method thereof | |
| CN109737557B (en) | Anti-frosting control method and system for outdoor unit of air conditioner | |
| CN109751714B (en) | Air conditioner defrosting control method and air conditioner | |
| CN109405176B (en) | Air conditioner control method and device and air conditioner |
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 |