CN108644988B - Air conditioner outdoor unit detection system - Google Patents
Air conditioner outdoor unit detection system Download PDFInfo
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- CN108644988B CN108644988B CN201810494555.4A CN201810494555A CN108644988B CN 108644988 B CN108644988 B CN 108644988B CN 201810494555 A CN201810494555 A CN 201810494555A CN 108644988 B CN108644988 B CN 108644988B
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- pressure
- outdoor unit
- air conditioner
- detection system
- indoor unit
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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
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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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- 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
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention belongs to the technical field of air conditioner detection, and particularly relates to an air conditioner outdoor unit detection system. In order to solve the problem that the heating/cooling effect of the detected air conditioner is poor due to leakage of the existing air conditioner outdoor unit detection system, the air conditioner outdoor unit detection system provided by the invention comprises a standard indoor unit, a refrigerant circulation pipeline is connected between the standard indoor unit and an air conditioner outdoor unit to be detected, the detection system also comprises a pressure detection device and a control device, and the pressure detection device is used for detecting the pressure of the standard indoor unit; after the heating/refrigerating test is carried out on the air conditioner outdoor unit to be tested, when the pressure of the standard indoor unit detected by the pressure detection device reaches the set pressure, the control device can control the refrigerant circulation pipeline to be disconnected; wherein the set pressure is greater than the standard atmospheric pressure. The invention can ensure that the pressure of the standard indoor unit is positive pressure, thereby achieving the purpose of positive pressure air receiving.
Description
Technical Field
The invention belongs to the technical field of air conditioner detection, and particularly relates to an air conditioner outdoor unit detection system.
Background
In the production process of the air conditioner, the detection production line of the air conditioner outdoor unit generally tends to be automatic. With the continuous expansion of market demand and production scale, the rhythm of detection of the air conditioner outdoor unit is faster and faster, but the phenomenon that the whole machine refrigeration/heating effect is not good is still exposed during detection, and the detection is always high. Aiming at the phenomenon, the detection system of the air conditioner outdoor unit and the outdoor unit with poor refrigerating/heating effect of the whole unit are repeatedly tested, checked and analyzed for two reasons: (1) the refrigerant in the outdoor unit is insufficient (the filling, weighing and measuring are qualified); (2) the detection system is mixed with air.
The existing detection mode of the outdoor unit of the air conditioner is generally as follows: and connecting the outdoor unit to be detected with a standard indoor unit, respectively carrying out heating operation and cooling operation to test the operation condition of the air conditioner, and recycling the refrigerant when the air conditioner has no problems in operation pressure, current, wind speed, air outlet temperature and the like. In the process of refrigerant recovery, the high-pressure side is manually closed, and the low-pressure side is closed again when the pressure meter displays that the pressure is 0, so that the refrigerant recovery is completed.
The problems of the detection method mainly include: negative pressure exists in the air conditioner outdoor unit detection system, joints may be loosened and leaked due to long-time vibration or other operations on a production line, and the detection system is slightly leaked, the pressure change of the slight leakage is not obvious, and the air is difficult to detect by naked eyes, so that air enters the detection system and cannot be found. In addition, in the process of detecting the outdoor unit, the refrigerant of the compressor is communicated with the detection system, and the micro-leakage rate is increased under high pressure, so that the refrigerating/heating effect of the whole machine is poor. In addition, long-time microleakage can mislead whether filling and metering of the perfusion equipment are accurate and whether vacuum pumping is qualified.
Therefore, the present invention provides a new detecting system for an outdoor unit of an air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the problems in the prior art, namely to solve the problem that the heating/cooling effect of the detected air conditioner is poor due to leakage of the existing air conditioner outdoor unit detection system, the invention provides an air conditioner outdoor unit detection system, which comprises a standard indoor unit, wherein a refrigerant circulation pipeline is connected between the standard indoor unit and an air conditioner outdoor unit to be detected, the detection system further comprises a pressure detection device and a control device, and the pressure detection device is used for detecting the pressure of the standard indoor unit; after the heating/refrigerating test is carried out on the air conditioner outdoor unit to be tested, when the pressure of the standard indoor unit detected by the pressure detection device reaches the set pressure, the control device controls the refrigerant circulation pipeline to be disconnected; wherein the set pressure is greater than the standard atmospheric pressure.
In a preferred embodiment of the above air conditioner outdoor unit detection system, an electromagnetic valve is disposed on the refrigerant circulation pipeline, and the control device can control the opening and closing of the electromagnetic valve to open/close the refrigerant circulation pipeline.
In a preferred embodiment of the above air conditioner outdoor unit detecting system, the electromagnetic valve is a two-way check electromagnetic valve.
In a preferred embodiment of the above air conditioner outdoor unit detecting system, a filter screen is further disposed on the refrigerant circulation pipeline, and the filter screen is mounted at an inlet of the two-way flow-stopping electromagnetic valve and used for preventing impurities from entering the two-way flow-stopping electromagnetic valve.
In a preferred embodiment of the above air conditioner outdoor unit detection system, the detection system further includes a display screen, and the display screen is used for displaying the pressure detected by the pressure detection device and/or the set pressure.
In a preferred embodiment of the above air conditioner outdoor unit detection system, the display screen is a touch screen, the touch screen is connected to the control device, and the detection system can be started and the set pressure value can be set through the touch screen.
In a preferred embodiment of the above air conditioner outdoor unit detecting system, the detecting system further includes: and the pressure gauge is used for detecting and displaying the pressure of the standard indoor unit.
In a preferred embodiment of the above air conditioner outdoor unit detecting system, the set pressure is 0.2 Mpa.
In a preferred embodiment of the above air conditioner outdoor unit detection system, the detection system further includes an alarm device, and when the detection system is in a standby state, if the current pressure of the standard indoor unit detected by the pressure detection device is lower than the set pressure and the current pressure subtracted from the set pressure is greater than a preset value, the alarm device sends an alarm prompt.
In the above preferred embodiment of the detection system for the outdoor unit of the air conditioner, when the outdoor unit of the air conditioner to be tested is subjected to the heating/cooling test, the heating test is firstly performed, and then the cooling test is performed
The invention detects the pressure of the standard indoor unit, closes the refrigerant circulating pipeline when the pressure of the standard indoor unit reaches a set value (such as 0.2Mpa), finishes the test and ensures that the pressure of the standard indoor unit is positive pressure, thereby realizing the purpose of positive pressure air receiving. The invention has the following beneficial effects: from the process angle analysis, the air leakage in the detection system can be fundamentally avoided, and the influence of the refrigerant leakage in the detection system on the product quality is also eliminated; according to the overall analysis, the high repair rate caused by the poor detection system is avoided, and the production beat is improved to a certain extent; according to the technical analysis, the original human body touch is improved into the pressure difference analysis alarm, and the leakage of the detection system is more visualized. The invention makes the detection system more perfect without any hidden trouble under the condition of replacing the original process.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner outdoor unit detection system according to the present invention.
Detailed Description
In order to make the embodiments, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the embodiments are some, but not all embodiments of the present invention. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural view of an air conditioner outdoor unit detection system according to the present invention. As shown in fig. 1, the detection system of the present invention includes a standard indoor unit 1, and a refrigerant circulation pipeline 2 is connected between the standard indoor unit 1 and an outdoor unit of an air conditioner to be detected. That is, after the outdoor unit to be tested enters the detection production line, a refrigerant circulation loop is formed between the outdoor unit to be tested and the standard indoor unit 1 through the refrigerant circulation pipeline 2, and the refrigerant circulation loop is used for performing heating/cooling tests on the outdoor unit to be tested. The detection system of the present invention further comprises: a pressure detection device 3 and a control device 4. Wherein, the pressure detection device 3 is used for detecting the pressure of the standard indoor unit 1; after the heating/cooling test is performed on the air conditioner outdoor unit to be tested, when the pressure of the standard indoor unit 1 detected by the pressure detection device 3 reaches the set pressure, the control device 4 can control the refrigerant circulation pipeline 2 to be disconnected; the set pressure is greater than the standard atmospheric pressure, so that the pressure of the standard indoor unit 1 is guaranteed to be positive pressure, and the purpose of positive pressure air receiving is achieved. Therefore, the pressure of the standard indoor unit 1 is positive pressure, so that even if the air is slightly leaked during storage, the outside air cannot enter the standard indoor unit 1, and the phenomenon that the air is mixed by a detection system is effectively avoided.
It should be noted that the set pressure may be set by an operator according to actual conditions, and theoretically may be higher than the external atmospheric pressure. In this example, the set pressure is described with reference to 0.2 MPa.
As an example, a plurality of solenoid valves (solenoid valves are not shown in fig. 1) are provided on the refrigerant circulation line 2, and the control device 4 can control the opening and closing of the solenoid valves to open/close the refrigerant circulation line 2. Specifically, after the outdoor unit to be tested enters the detection production line and is ready, the control device 4 controls the corresponding solenoid valve to be opened, so as to perform heating/cooling test on the standard outdoor unit. After heating/refrigerating test is carried out on the outdoor unit of the air conditioner to be tested, the pressure detection device 3 detects the pressure of the standard indoor unit 1, when the detected pressure reaches 0.2Mpa, the control device 4 controls the corresponding electromagnetic valve to be closed, so that the refrigerant circulation pipeline 2 is disconnected, the pressure of the standard indoor unit 1 is locked at 0.2Mpa, after a few seconds of delay, the plugging and pulling are controlled to be separated from the outdoor unit to be tested, the detection on the outdoor unit to be tested is completed, and the outdoor unit to be tested enters the next process.
Preferably, the solenoid valve of the present invention is a two-way check solenoid valve. Furthermore, in order to prevent impurities from entering the bidirectional flow-stopping electromagnetic valve, a filter screen (not shown in fig. 1) is installed at an inlet of the bidirectional flow-stopping electromagnetic valve, and the refrigerant in the refrigerant circulation pipeline 2 passes through the filter screen and then passes through the bidirectional flow-stopping electromagnetic valve, so that the cleanliness of the bidirectional flow-stopping electromagnetic valve is guaranteed.
With continued reference to fig. 1, the detection system of the present invention further includes a display screen 5, and the display screen 5 is used for displaying the pressure detected by the pressure detection device 3 and the set pressure. Specifically, in this embodiment, the display screen 5 is a touch screen, the touch screen is connected to the control device 4, and a start option is set on the touch screen. An operator can set the pressure in a self-defined mode through the touch screen, and then the detection system is started through a starting option. That is to say, the touch screen is equivalent to a man-machine interaction interface between the detection system and an operator, and the operator controls the detection system to work through the touch screen.
As a preferred embodiment, the detection system of the present invention further includes a pressure gauge 6, and the pressure gauge 6 is used for detecting and displaying the pressure of the standard indoor unit 1, so as to form mutual detection with the pressure displayed by the display screen 5, thereby further improving the reliability of the detection system.
As a preferred embodiment, the detection system of the present invention further comprises an alarm device 6. When the detection system is in a standby state, namely the standard indoor unit 1 is not connected with the outdoor unit to be detected, if the current pressure of the standard indoor unit detected by the pressure detection device 3 is lower than the set pressure and the current pressure subtracted from the set pressure is greater than the preset value, the alarm device 6 gives an alarm prompt. That is to say, in the state that the detection system is in the standby state, if the pressure of the standard indoor unit 1 is lower than a certain range of 0.2Mpa, the condition that the detection system leaks is indicated, an alarm is used for prompting an operator to detect the detection system, the dew point is searched in time, the station production stopping time is reduced, and therefore the production efficiency is improved.
As a preferred embodiment, when testing the outdoor unit to be tested, the invention firstly performs a heating test and then performs a cooling test, in the cooling test process, when the pressure of the standard indoor unit 1 reaches 0.2Mpa, the control device 4 controls the corresponding electromagnetic valve to be closed, and the plugging and unplugging are controlled to be separated from the outdoor unit to be tested after a delay of several seconds, so as to complete the detection of the outdoor unit to be tested, and simultaneously lock the pressure in the standard indoor unit 1 at the set pressure.
In summary, the present invention detects the pressure of the standard indoor unit, and closes the refrigerant circulation pipeline when the pressure of the standard indoor unit reaches a set value (e.g., 0.2Mpa), and ends the test to ensure that the pressure of the standard indoor unit is positive pressure, thereby achieving the purpose of positive pressure air recovery. The invention has the following beneficial effects: from the process angle analysis, the air leakage in the detection system can be fundamentally avoided, and the influence of the refrigerant leakage in the detection system on the product quality is also eliminated; according to the overall analysis, the high repair rate caused by the poor detection system is avoided, and the production beat is improved to a certain extent; according to the technical analysis, the original human body touch is improved into the pressure difference analysis alarm, and the leakage of the detection system is more visualized. The invention makes the detection system more perfect without any hidden trouble under the condition of replacing the original process.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (9)
1. A detection system for an air conditioner outdoor unit comprises a standard indoor unit, a refrigerant circulation pipeline is connected between the standard indoor unit and the air conditioner outdoor unit to be detected, and is characterized by further comprising a pressure detection device and a control device,
the pressure detection device is used for detecting the pressure of the standard indoor unit;
after the heating/refrigerating test is carried out on the air conditioner outdoor unit to be tested, when the pressure of the standard indoor unit detected by the pressure detection device reaches the set pressure, the control device controls the refrigerant circulation pipeline to be disconnected;
wherein the set pressure is greater than a standard atmospheric pressure;
wherein the detection system also comprises an alarm device,
and under the condition that the detection system is in a standby state, if the current pressure of the standard indoor unit detected by the pressure detection device is lower than the set pressure and the current pressure subtracted from the set pressure is greater than a preset value, the alarm device gives an alarm prompt.
2. The outdoor unit testing system of claim 1, wherein the refrigerant circulation line is provided with an electromagnetic valve,
the control device can control the opening and closing of the electromagnetic valve to open/close the refrigerant circulating pipeline.
3. An outdoor unit testing system of an air conditioner according to claim 2, wherein the solenoid valve is a two-way check solenoid valve.
4. The outdoor unit testing system of claim 3, wherein a filter screen is further installed on the refrigerant circulation line, and the filter screen is installed at an inlet of the two-way check solenoid valve for preventing impurities from entering the two-way check solenoid valve.
5. An outdoor unit testing system according to claim 1, further comprising a display screen for displaying the pressure detected by the pressure detecting device and/or the set pressure.
6. The air conditioner outdoor unit detecting system according to claim 5, wherein the display screen is a touch screen, the touch screen is connected to the control device,
the detection system can be activated and the value of the set pressure can be set by means of the touch screen.
7. An outdoor unit testing system of an air conditioner according to claim 1, further comprising:
and the pressure gauge is used for detecting and displaying the pressure of the standard indoor unit.
8. An outdoor unit testing system according to any one of claims 1 to 7, wherein the set pressure is 0.2 Mpa.
9. The outdoor unit testing system of any one of claims 1 to 7, wherein the heating test is performed first and then the cooling test is performed when the heating/cooling test is performed on the outdoor unit under test.
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| CN201810494555.4A CN108644988B (en) | 2018-05-22 | 2018-05-22 | Air conditioner outdoor unit detection system |
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| CN201810494555.4A CN108644988B (en) | 2018-05-22 | 2018-05-22 | Air conditioner outdoor unit detection system |
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| CN110542173B (en) * | 2019-09-04 | 2021-06-08 | 青岛海信日立空调系统有限公司 | Detection method for multi-split air conditioner |
| CN110530080B (en) * | 2019-09-12 | 2021-08-27 | 宁波奥克斯电气股份有限公司 | Refrigerant recovery control method and air conditioning system |
| CN114593776A (en) * | 2022-04-11 | 2022-06-07 | 四川长虹空调有限公司 | Holographic parameter commodity inspection method and system for outdoor unit of air conditioner |
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| JP4462096B2 (en) * | 2005-04-07 | 2010-05-12 | ダイキン工業株式会社 | Air conditioner |
| CN101776532B (en) * | 2010-01-26 | 2012-06-27 | 广东美的集团芜湖制冷设备有限公司 | Detection device and detection method used for detecting outdoor unit of air conditioner |
| CN103822326B (en) * | 2012-11-19 | 2018-09-04 | 珠海格力电器股份有限公司 | Outer machine performance test methods, server and system |
| CN103411268B (en) * | 2013-07-22 | 2017-03-15 | Tcl空调器(中山)有限公司 | Refrigeration system and the method for refrigeration system refrigeration |
| CN104181004B (en) * | 2014-09-09 | 2017-04-12 | 绍兴讯飞自动化设备有限公司 | Standard internal unit for testing refrigerating or heating capacity of air-conditioning external units and commodity inspection system |
| CN105698284B (en) * | 2016-03-14 | 2018-10-19 | 广东美的制冷设备有限公司 | Air-conditioning system and its refrigeration control method and device |
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Effective date of registration: 20210811 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Patentee after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |