CN110749030A - Detection device and method for high-low voltage switch of air conditioner - Google Patents
Detection device and method for high-low voltage switch of air conditioner Download PDFInfo
- Publication number
- CN110749030A CN110749030A CN201911037351.9A CN201911037351A CN110749030A CN 110749030 A CN110749030 A CN 110749030A CN 201911037351 A CN201911037351 A CN 201911037351A CN 110749030 A CN110749030 A CN 110749030A
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- CN
- China
- Prior art keywords
- low
- voltage switch
- air conditioning
- air conditioner
- conditioning unit
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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
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- 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
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- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
- F24F11/526—Indication arrangements, e.g. displays giving audible indications
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- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
Abstract
The invention discloses a detection device and a detection method for a high-low pressure switch of an air conditioner, which comprise an air conditioning unit, an air conditioning main control board, a high-pressure switch and a low-pressure switch, wherein the high-pressure switch is arranged on a pipeline between an exhaust port of a compressor and a four-way reversing valve in the air conditioning unit, the low-pressure switch is arranged on a pipeline between a gas-liquid separator and an air suction port of the compressor in the air conditioning unit, the high-pressure switch and the low-pressure switch are used for detecting the pressure value of the air conditioning unit, the high-low pressure switch can be actuated and disconnected when the pressure in the pipeline is lower than or higher than a set value, the high-pressure switch and the low-pressure switch give on-off signals to the air conditioning main control board, the main control board stops and displays fault instructions according to the signals, and simultaneously displays the signals, Good stability and protective effect.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a device and a method for detecting a high-low voltage switch of an air conditioner.
Background
The high-low voltage switch is a pressure protection device for an air conditioning system, and mainly has the advantages that whether the pressure of the system is normal or not is detected, the high-low voltage switch is installed manually in the installation process, and the installed air conditioning unit cannot be seen to be bad or bad in a non-running state, so that corresponding problems or faults can occur after the air conditioning unit is purchased by a customer and used for a long time.
Disclosure of Invention
The invention aims to solve the problems and provide a detection device and a detection method for a high-low voltage switch of an air conditioner.
In order to achieve the purpose, the invention provides the following technical scheme: the high-pressure switch is arranged on a pipeline between an exhaust port of a compressor and a four-way reversing valve in the air conditioning unit, the low-pressure switch is arranged on a pipeline between a gas-liquid separator and an air suction port of the compressor in the air conditioning unit, the high-pressure switch and the low-pressure switch are used for detecting the pressure value of the air conditioning unit, the high-pressure switch and the low-pressure switch can act and be disconnected when the pressure in the pipeline is lower than or higher than a set value, the high-pressure switch and the low-pressure switch give on-off signals to the air conditioning main control board, the main control board stops the air conditioning unit according to the signals and displays fault instructions, and meanwhile, the alarm lamp is used for displaying, so that the aim of protecting the air conditioning unit is fulfilled.
Preferably, the air conditioner main control board, the alarm lamp, the high-voltage switch and the low-voltage switch are electrically connected with each other, the high-voltage switch and the low-voltage switch detect system pressure, the high-voltage switch and the low-voltage switch can be actuated and disconnected when the pressure is higher than or lower than a set value, the high-voltage switch and the low-voltage switch in an on-off state give an on-off signal to the air conditioner main control board, the main control board stops the machine and displays a fault instruction according to the signal, and meanwhile, the alarm lamp displays the fault instruction.
Preferably, the air conditioner main control board adopts KFR model series.
Preferably, the alarm lamp is an audible and visual alarm, and the audible and visual alarm can simultaneously give out an audible alarm signal and a visual alarm signal, so that the warning effect is improved.
Preferably, the power end is electrically connected with the air conditioning unit.
The invention also provides a detection method of the air conditioner high-low voltage switch, which comprises the following steps:
t1 abnormal State 1: and when the high-pressure of the air conditioning unit exceeds a set value, the high-pressure switch is switched off.
T2 abnormal State 2: and when the low-pressure of the air conditioning unit is lower than a set value, the low-pressure switch is switched off.
T3 abnormity alarm: when the high-low voltage switch operates abnormally, the air conditioner main control board stops the machine and displays a fault instruction according to the signal.
T4 recovery run: when the pressure of the air conditioner unit is reduced or increased to a rated recovery value, the high-low voltage switch automatically resets and operates normally.
Compared with the prior art, the invention has the beneficial effects that: the invention is used for automatically detecting the running state of the air conditioning unit, has high detection precision and good stability, and plays a role in protection.
Drawings
Fig. 1 is a schematic structural diagram of a detection device for a high-low voltage switch of an air conditioner according to the present invention.
Fig. 2 is a flow chart of a detection method of the air conditioner high-low voltage switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the air conditioner comprises an air conditioning unit 1, an air conditioning main control board 2, a power supply end 4, a high-voltage switch 5 and a low-voltage switch 6, wherein the high-voltage switch 5 is installed on a pipeline between an exhaust port of a compressor and a four-way reversing valve in the air conditioning unit 1, the low-voltage switch 6 is installed on a pipeline between a gas-liquid separator and an air suction port of the compressor in the air conditioning unit 1, the air conditioning main control board 2, an alarm lamp 3, the high-voltage switch 5 and the low-voltage switch 6 are electrically connected with each other, the high-voltage switch 5 and the low-voltage switch 6 detect system pressure, the high-voltage switch and the low-voltage switch can be actuated and disconnected when the pressure is higher than or lower than a set value, the high-voltage switch and the low-voltage switch under the on-off state give an on-off signal to the air conditioning main control board, the alarm lamp 3 is an audible and visual alarm which can send out two alarm signals of sound and light simultaneously to improve the warning effect, and the power end 4 is electrically connected with the air conditioning unit 1.
Referring to fig. 2, the present invention provides a technical solution: the method comprises the following steps:
t1 abnormal State 1: when the high-pressure of the air conditioning unit 1 exceeds a set value, the high-pressure switch 5 is turned off.
T2 abnormal State 2: when the low-pressure of the air conditioning unit 1 is lower than the set value, the low-pressure switch 6 is turned off.
T3 abnormity alarm: when the high-low voltage switch operates abnormally, the air conditioner main control panel 2 stops the machine and displays a fault instruction according to the signal.
T4 recovery run: when the pressure of the air conditioning unit 1 is reduced or increased to a rated recovery value, the high-low voltage switch automatically resets and operates normally.
The working principle of the invention is as follows: when the air conditioning unit 1 is operated, the low-voltage switch 6 is switched off when the low-voltage pressure of the air conditioning unit 1 is lower than a set value (such as 2 bar), and when the high-voltage pressure of the air conditioning unit 1 exceeds a set value (such as 33 bar), the high-voltage switch 5 is switched off, the high-voltage switch in the on-off state gives an on-off signal to the air conditioning main control board 2, the air conditioning main control board 2 stops the machine and displays a fault instruction according to the signal, and meanwhile, the alarm lamp 3 displays the on-off signal to remind, so that the air conditioning unit 1 is protected, and when the pressure of the air conditioning unit 1 is reduced or increased to a rated recovery value, the high. The 1bar =0.1 MPa.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a detection apparatus and method of air conditioner high-low pressure switch, includes air conditioning unit (1), air conditioner main control board (2), power end (4), high-voltage switch (5) and low-voltage switch (6), its characterized in that: the high-pressure switch (5) is arranged on a pipeline between an exhaust port of a compressor and the four-way reversing valve in the air conditioning unit (1), and the low-pressure switch (6) is arranged on a pipeline between a gas-liquid separator and an air suction port of the compressor in the air conditioning unit (1).
2. The detection device for the high-low voltage switch of the air conditioner as claimed in claim 1, wherein: the air conditioner main control board (2), the alarm lamp (3), the high-voltage switch (5) and the low-voltage switch (6) are electrically connected with each other.
3. A detecting device for a high-low voltage switch of an air conditioner according to claim 1, characterized in that: the air conditioner main control board (2) adopts KFR model series.
4. A detecting device for a high-low voltage switch of an air conditioner according to claim 1, characterized in that: the alarm lamp (3) is an audible and visual alarm.
5. A detecting device for a high-low voltage switch of an air conditioner according to claim 1, characterized in that: the power end (4) is electrically connected with the air conditioning unit (1).
6. The detection method of the high-low voltage switch of the air conditioner as claimed in claim 1, wherein: the above-mentioned
T1 abnormal State 1: when the high-pressure of the air conditioning unit (1) exceeds a set value, the high-pressure switch (5) is switched off;
t2 abnormal State 2: when the low-pressure of the air conditioning unit (1) is lower than a set value, the low-pressure switch (6) is switched off;
t3 abnormity alarm: when the high-low voltage switch operates abnormally, the air conditioner main control board (2) stops the machine and displays a fault instruction according to the signal;
t4 recovery run: when the pressure of the air conditioning unit (1) is reduced or increased to a rated recovery value, the high-low voltage switch automatically resets and operates normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037351.9A CN110749030A (en) | 2019-10-29 | 2019-10-29 | Detection device and method for high-low voltage switch of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037351.9A CN110749030A (en) | 2019-10-29 | 2019-10-29 | Detection device and method for high-low voltage switch of air conditioner |
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| Publication Number | Publication Date |
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| CN110749030A true CN110749030A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911037351.9A Pending CN110749030A (en) | 2019-10-29 | 2019-10-29 | Detection device and method for high-low voltage switch of air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623484A (en) * | 2020-05-13 | 2020-09-04 | 青岛海尔空调电子有限公司 | Air conditioner, control method thereof and computer readable storage medium |
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| CN101949572A (en) * | 2010-09-13 | 2011-01-19 | 厦门金龙汽车空调有限公司 | Method and device for intelligently controlling air-conditioner of automobile |
| CN104848479A (en) * | 2015-04-29 | 2015-08-19 | 广东美的制冷设备有限公司 | Air conditioner, method and device for refrigerant pipeline pressure monitor and system control thereof |
| CN105157189A (en) * | 2015-10-19 | 2015-12-16 | 广东志高暖通设备股份有限公司 | Air conditioning system and pressure control method |
| JP2017227356A (en) * | 2016-06-21 | 2017-12-28 | ダイキン工業株式会社 | Freezer and actuation determination method of pressure switch |
| CN107525218A (en) * | 2017-07-27 | 2017-12-29 | 奥克斯空调股份有限公司 | A kind of self-adaptation control method and system of A/C pressure switch wiring |
| CN109143063A (en) * | 2018-11-01 | 2019-01-04 | 格力电器（武汉）有限公司 | A kind of detection device and method of air-conditioning high and low voltage switch |
-
2019
- 2019-10-29 CN CN201911037351.9A patent/CN110749030A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949572A (en) * | 2010-09-13 | 2011-01-19 | 厦门金龙汽车空调有限公司 | Method and device for intelligently controlling air-conditioner of automobile |
| CN104848479A (en) * | 2015-04-29 | 2015-08-19 | 广东美的制冷设备有限公司 | Air conditioner, method and device for refrigerant pipeline pressure monitor and system control thereof |
| CN105157189A (en) * | 2015-10-19 | 2015-12-16 | 广东志高暖通设备股份有限公司 | Air conditioning system and pressure control method |
| JP2017227356A (en) * | 2016-06-21 | 2017-12-28 | ダイキン工業株式会社 | Freezer and actuation determination method of pressure switch |
| CN107525218A (en) * | 2017-07-27 | 2017-12-29 | 奥克斯空调股份有限公司 | A kind of self-adaptation control method and system of A/C pressure switch wiring |
| CN109143063A (en) * | 2018-11-01 | 2019-01-04 | 格力电器（武汉）有限公司 | A kind of detection device and method of air-conditioning high and low voltage switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111623484A (en) * | 2020-05-13 | 2020-09-04 | 青岛海尔空调电子有限公司 | Air conditioner, control method thereof and computer readable storage medium |
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Application publication date: 20200204 |
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