CN107642863A - Air conditioner opens control method during heating mode - Google Patents
Air conditioner opens control method during heating mode Download PDFInfo
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- CN107642863A CN107642863A CN201710651973.5A CN201710651973A CN107642863A CN 107642863 A CN107642863 A CN 107642863A CN 201710651973 A CN201710651973 A CN 201710651973A CN 107642863 A CN107642863 A CN 107642863A
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- air conditioner
- heating mode
- control method
- tension switch
- low tension
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Abstract
Control method during heating mode is opened the present invention relates to a kind of air conditioner; it is not only able to make air conditioner shut down in time in cold medium shortage; so as to protect compressor injury-free; and in the case where outdoor temperature is low, refrigerant is sufficient; the situation that can effectively avoid causing air conditioner to be shut down because low tension switch is off occurs, so as to which air conditioner normal operation be effectively ensured.
Description
Technical field
The present invention relates to air conditioner, is especially control method when a kind of air conditioner opens heating mode.
Background technology
Existing air conditioner is protection compressor, avoids compressor from being operated for a long time in the case of cold medium shortage, causes to press
Contracting machine is damaged, and low tension switch is installed typically 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 less than some value, low tension switch 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.At present, existing air conditioner is in outdoor
When unlatching heating mode is heated in the case that temperature is relatively low, often first shielding low-voltage switch detection a period of time, make low
Compress switch even at off-state, controller will not also carry out low-voltage variation control, but this way can cause air conditioner
It can not be shut down in time in cold medium shortage, so as to easily 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 exceeded shielding low-voltage protection when
Between after, suction pressure of compressor that low tension switch detects is possible to the default connection value that still can be less than low tension switch, now
Low tension switch will be off, and be not normally functioning so as to cause air conditioner to be shut down.
The content of the invention
The technical problem to be solved in the present invention is to provide control method when a kind of air conditioner opens heating mode, not only
Air conditioner can be made to shut down in time in cold medium shortage, so as to protect compressor injury-free, and outdoor temperature is low, refrigerant
In the case of abundance, the situation that can effectively avoid causing air conditioner to be shut down because low tension switch is off occurs, from
And air conditioner normal operation is effectively ensured.
In order to solve the above technical problems, the technical scheme is that：There is provided when a kind of air conditioner opens heating mode
Control method, wherein, it comprises the following steps：
S1, before compressor start, first detect low tension switch state,
If low tension switch is off, do not start compressor, and perform step S4-1；
If low tension switch is in the conduction state, step S2 is performed；
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 detect outdoor heat exchanger coil temperature T1,
If low tension switch is off, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, then performs
Step S4-1, otherwise perform step S4-2；
S4-1, air conditioner are shut down and report low voltage failure；
S4-2, air conditioner is set to be run into normal heating mode.
Air conditioner of the present invention opens control method during heating mode, wherein, when air conditioner performs step S3,
If low tension switch is off, 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 contrasted,
If C1 ＜ C, step S1 is performed；
If C1=C, step S4-1 is performed.
Air conditioner of the present invention opens control method during heating mode, wherein, the value for presetting machine stop times C is 2
Or 3.
Air conditioner of the present invention opens control method during heating mode, wherein, preset temperature value T is -25 DEG C.
Air conditioner of the present invention opens control method during heating mode, wherein, preset time t 1 is 5~7 minutes.
Air conditioner of the present invention opens control method during heating mode, wherein, preset time t 2 is stated as 3~5 points
Clock.
After above method, compared with prior art, air conditioner of the present invention opens control method tool during heating mode
Have the advantage that：First, by first detecting low tension switch state before compressor start, so as to judge whether air-conditioner coolant fills
Foot, if now low tension switch disconnects, it indicate that air-conditioner coolant is insufficient, at this moment air conditioner is shut down and reports low voltage failure, pressure
Contracting machine would not start, and so compressor can be avoided to run the long period in the case of cold medium shortage and cause compressor to damage
The situation of wound occurs；Secondly, first shielding low-voltage switch detection, then starts compressor, and makes one section of compressor continuous service pre-
If the time, low tension switch state is then detected again, while detects outdoor heat exchanger coil temperature, is so judging low tension switch shape
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 situation generation for making low tension switch cause air conditioner to be shut down still in off-state because ambient temperature is too low, so as to effectively protect
Demonstrate,prove air conditioner normal operation.
Brief description of the drawings
The control flow chart of control method when Fig. 1 is air conditioner unlatching heating mode of the present invention.
Embodiment
Control method when opening heating mode to air conditioner of the present invention with reference to embodiment is made further
Describe in detail.
As shown in figure 1, control method when air conditioner of the present invention opens heating mode comprises the following steps：
S1, before compressor start, first detect low tension switch state,
If low tension switch is off, do not start compressor, and perform step S4-1；
If low tension switch is in the conduction state, step S2 is performed；
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 detect outdoor heat exchanger coil temperature T1,
If low tension switch is off, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, then performs
Step S3-1, step S4-2 is otherwise performed, 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 contrasted, wherein, preset machine stop times C value
For 2 or 3, preferably 3；
If C1 ＜ C, step S1 is performed；
If C1=C, step S4-1 is performed；
S4-1, air conditioner are shut down and report low voltage failure；
S4-2, air conditioner is set to be run into normal heating mode.
To ensure the normal use of air conditioner, after air conditioner shuts down every time, the machine stop times C1 of record needs to reset.
Control method when air conditioner of the present invention opens heating mode has advantages below：First, by being opened in compressor
Low tension switch state is first detected before dynamic, so as to judge whether air-conditioner coolant is sufficient, if now low tension switch disconnects, that is with regard to table
Show air-conditioner coolant deficiency, at this moment air conditioner is shut down and reports low voltage failure, and compressor would not start, and can so avoid compressing
Machine runs the long period in the case of cold medium shortage and causes the situation of compressor injury to occur；Secondly, first shielding low-voltage is opened
Detection is closed, then starts compressor, and makes one section of preset time of compressor continuous service, then detects low tension switch state again,
Outdoor heat exchanger coil temperature is detected simultaneously, so on the basis of low tension switch state is judged, by increasing outdoor heat exchanger
The judgement of coil temperature, it can effectively avoid making low tension switch because ambient temperature is too low still in the case where ensuring refrigerant abundance
The situation for being off and causing air conditioner to be shut down occurs, so as to which air conditioner normal operation be effectively ensured；3rd, step
S3-1 and S3-2 setting be not only able to increase air conditioner judge refrigerant whether the accuracy of abundance, and can be further effective
The situation generation for making low tension switch cause air conditioner to be shut down still in off-state because ambient temperature is too low is avoided, so as to effectively
Ensure air conditioner normal operation.
Embodiment above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row limits, and on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art make to technical scheme
The various modifications gone out and improvement, it all should fall into the protection domain of claims of the present invention determination.
Claims (6)
1. a kind of air conditioner opens control method during heating mode, it is characterised in that：It comprises the following steps：
S1, before compressor start, first detect low tension switch state,
If low tension switch is off, do not start compressor, and perform step S4-1；
If low tension switch is in the conduction state, step S2 is performed；
S2, shielding low-voltage switch detection, then start compressor, and make compressor one section of continuous service is default in a heating mode
Time t1；
S3, low tension switch state is detected again, while detect outdoor heat exchanger coil temperature T1,
If low tension switch is off, and outdoor heat exchanger coil temperature T1 is not more than preset temperature value T, then performs step
S4-1, otherwise perform step S4-2；
S4-1, air conditioner are shut down and report low voltage failure；
S4-2, air conditioner is set to be run into normal heating mode.
2. air conditioner according to claim 1 opens control method during heating mode, it is characterised in that：When air conditioner is held
During row step S3, if low tension switch is off, 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 step S4-1 is performed：
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 contrasted,
If C1 ＜ C, step S1 is performed；
If C1=C, step S4-1 is performed.
3. air conditioner according to claim 2 opens control method during heating mode, it is characterised in that：Described preset is stopped
Machine number C value is 2 or 3.
4. the air conditioner according to claim 1 or 2 or 3 opens control method during heating mode, it is characterised in that：It is described
Preset temperature value T is -25 DEG C.
5. the air conditioner according to claim 1 or 2 or 3 opens control method during heating mode, it is characterised in that：It is described
Preset time t 1 is 5~7 minutes.
6. the air conditioner according to Claims 2 or 3 opens control method during heating mode, it is characterised in that：It is 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710651973.5A CN107642863B (en) | 2017-08-02 | 2017-08-02 | Air conditioner opens control method when heating mode |
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| Publication Number | Publication Date |
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| CN107642863A true CN107642863A (en) | 2018-01-30 |
| CN107642863B CN107642863B (en) | 2019-08-16 |
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ID=61110576
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710651973.5A Active CN107642863B (en) | 2017-08-02 | 2017-08-02 | Air conditioner opens control method when heating mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612022A (en) * | 2018-11-28 | 2019-04-12 | 宁波奥克斯电气股份有限公司 | A kind of control method for preventing air-conditioning from blocking up valve operation |
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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612022A (en) * | 2018-11-28 | 2019-04-12 | 宁波奥克斯电气股份有限公司 | A kind of control method for preventing air-conditioning from blocking up valve operation |
Also Published As
| Publication number | Publication date |
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| CN107642863B (en) | 2019-08-16 |
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