CN110686324A - Air conditioner connecting pipe, air conditioner and refrigerant filling method - Google Patents
Air conditioner connecting pipe, air conditioner and refrigerant filling method Download PDFInfo
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- CN110686324A CN110686324A CN201910798162.7A CN201910798162A CN110686324A CN 110686324 A CN110686324 A CN 110686324A CN 201910798162 A CN201910798162 A CN 201910798162A CN 110686324 A CN110686324 A CN 110686324A
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- air conditioner
- pipe
- refrigerant
- connecting pipe
- valve
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner connecting pipe, an air conditioner and a refrigerant filling method. The two pipes of the indoor unit and the outdoor unit of the air conditioner are respectively a thick pipe and a thin pipe, the air conditioner connecting pipe comprises a three-way valve installed on the thick pipe and/or the thin pipe, the three-way valve is connected with a first connecting pipe, a second connecting pipe and a third connecting pipe, the first connecting pipe is connected with one end of the first pipe joint, the second connecting pipe is connected with one end of the second pipe joint, the third connecting pipe is connected with one end of the third pipe joint, the other end of the first pipe joint and the other end of the second pipe joint are respectively connected at two ends of the thick pipe and/or two ends of the thin pipe, the other end of the third pipe joint is used for connecting a refrigerant tank, a normally closed valve is arranged on the third connecting pipe, and a filter is arranged at a valve. The invention can effectively avoid the refrigerant filling of the high-altitude operation, enables the air conditioner to recover the normal operation and saves the high-altitude operation cost.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner connecting pipe, an air conditioner and a refrigerant filling method.
Background
In the existing air conditioner manufacturing industry, the installation of a household air conditioner needs a connecting pipe for connecting an indoor unit and an outdoor unit, and for a user in a high-rise building, a refrigerant needs to be poured into the outdoor unit, and the original refrigerant pouring mode is as follows: after-sale maintenance personnel operate outside the machine through overhead operation in a heating mode, connect and fill the refrigerant through a leather hose and a refrigerant tank, measure pressure and meet the conditions. But is dangerous for operators working high above the ground, and no effective solution exists in the market.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to provide a safe and reliable air conditioner connecting pipe without filling outdoor refrigerant, an air conditioner and a refrigerant filling method.
In order to solve the above technical problems, the present invention provides an air conditioner connection pipe, wherein two pipes connecting an indoor unit and an outdoor unit of an air conditioner are respectively a thick pipe and a thin pipe, the air conditioner connection pipe includes a three-way valve installed on the thick pipe and/or the thin pipe, the three-way valve is connected to a first connection pipe, a second connection pipe and a third connection pipe, the first connection pipe is connected to one end of a first pipe joint, the second connection pipe is connected to one end of a second pipe joint, the third connection pipe is connected to one end of the third pipe joint, the other end of the first pipe joint and the other end of the second pipe joint are respectively connected to two ends of the thick pipe and/or two ends of the thin pipe, the other end of the third pipe joint is used for connecting a refrigerant tank, and the third connection pipe is provided with a normally closed valve, and a filter is installed at a valve core of the three-way valve connected with the third connecting pipe or on the third connecting pipe.
Further, the filter is a mesh type filter.
Further, the normally closed valve is a touch pressure type interface valve.
The invention also provides an air conditioner, wherein two pipes for connecting the indoor unit and the outdoor unit of the air conditioner are respectively a thick pipe and a thin pipe, and the air conditioner connecting pipe is arranged on the thick pipe and/or the thin pipe.
Further, a first detection valve is installed on the thick pipe.
Further, a second detection valve is installed on the thin tube.
The invention also provides a refrigerant filling method applied to the air conditioner, and the refrigerant filling method comprises the following steps:
the air conditioner operates in a refrigerating mode;
detecting the heat exchange capacity and power consumption of the air conditioner during operation, and judging the refrigerant shortage in a refrigerant circulating system according to the detection result;
and opening the refrigerant tank for filling.
Further, install first detection valve on the thick pipe, still include after the step of opening the refrigerant jar and filling: further comprising the steps of:
and judging whether the refrigerant perfusion quantity meets the operating condition of the air conditioner or not according to the measured pressure index of the first detection valve.
Further, install the second on the tubule and detect the valve, still include the following step after the step of opening the refrigerant jar and filling:
and judging whether the refrigerant perfusion quantity meets the operating condition of the air conditioner or not according to the measured pressure index of the second detection valve.
Further, after the step of opening the refrigerant tank for filling, the method further comprises the following steps: and judging whether the refrigerant perfusion amount meets the operating conditions of the air conditioner or not according to the measured weight of the refrigerant tank.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
the air conditioner connecting pipe, the air conditioner and the refrigerant perfusion method provided by the invention at least have the following beneficial effects: the difficulty of refrigerant filling of the outdoor unit is reduced, and the danger problem of high-altitude operation is solved; the air conditioner saves the overhead operation cost, can be operated conveniently by a user, is directly operated on an indoor balcony, is convenient to fill a refrigerant, and enables the air conditioner to recover to normal work.
Drawings
The scope of the present disclosure may be better understood by reading the following detailed description of exemplary embodiments in conjunction with the accompanying drawings. Wherein the included drawings are:
fig. 1 is a schematic structural view of an air conditioner connection pipe according to an embodiment of the present invention;
fig. 2 is a schematic view of an installation structure of an air conditioner connection pipe, an indoor unit and an outdoor unit according to an embodiment of the present invention.
Wherein: 100-air-conditioning connecting pipe; 1-thick pipe; 2-a thin tube; 3-a three-way valve; 4-a first connection pipe; 41-a first pipe joint; 5-a second connecting tube; 51-a second pipe joint; 6-a third connecting pipe; 61-a third pipe joint; 7-a normally closed valve; 8-a filter.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will describe in detail an implementation method of the present invention with reference to the accompanying drawings and embodiments, so that how to apply technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The following description is given with the directional terms as they are used in the drawings and is not intended to limit the specific embodiments of the support assembly, the assembly tool and the assembly method of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The first embodiment is as follows:
fig. 1 is a schematic structural view illustrating an air conditioner connection pipe 100 according to an embodiment of the present invention; fig. 2 is a schematic view of an installation structure of an air conditioner connection pipe, an indoor unit and an outdoor unit according to an embodiment of the present invention.
As shown in fig. 1 and 2, an air conditioner connecting pipe 100, wherein two pipes connecting an indoor unit and an outdoor unit of an air conditioner are a thick pipe 1 and a thin pipe 2, the air conditioner connecting pipe 100 includes a three-way valve 3 installed on the thin pipe 2, the three-way valve 3 is connected to a first connecting pipe 4, a second connecting pipe 5 and a third connecting pipe 6, the first connecting pipe 4 is connected to one end of a first pipe joint 41, the second connecting pipe 5 is connected to one end of a second pipe joint 51, the third connecting pipe 6 is connected to one end of a third pipe joint 61, the other end of the first pipe joint 41 and the other end of the second pipe joint 51 are connected to two ends of the thin pipe 2, the other end of the third pipe joint 61 is used for connecting a refrigerant tank, the third connecting pipe 6 is provided with a normally closed valve 7, and a filter 8 is installed at a valve. When the refrigerant is filled, the refrigerant tank is connected with the other end of the third pipe joint 61, the normally closed valve 7 is opened, and the refrigerant in the refrigerant tank passes through the filter 8 and then enters the air conditioner through the three-way valve 3.
The air conditioner connecting pipe provided by the invention can reduce the difficulty of refrigerant filling of the outdoor unit and solve the danger problem of high-altitude operation; the air conditioner saves the overhead operation cost, can be operated conveniently by a user, is directly operated on an indoor balcony, is convenient to fill a refrigerant, and enables the air conditioner to recover to normal work.
As a preferred embodiment, the filter 8 is a mesh filter. For example, a 100 mesh filter, i.e., a 100-hole filter, may be used to prevent the refrigerant to be poured from containing impurities.
In a preferred embodiment, the normally closed valve 7 is a touch-pressure type interface valve. When the refrigerant tank is opened for filling, the filling pressure enables the normally closed valve 7 of the touch pressure type interface valve to be jacked open, and the refrigerant can enter the air conditioner through the three-way valve 3. The normally closed valve 7 does not need to be opened manually, so that the operation difficulty is reduced, the operation steps are reduced, and the refrigerant is more convenient to fill.
The two pipes for connecting the indoor unit and the outdoor unit of the air conditioner are respectively a thick pipe 1 and a thin pipe 2, and the air conditioner connecting pipe 100 is arranged on the thin pipe 2. The perfusion equipment is arranged between the connecting pipes of the indoor unit and the outdoor unit, and can be properly adjusted to ensure that the installation position of the perfusion equipment is in an operable position on a balcony.
The thick pipe 1 is provided with a first detection valve (not shown). The pressure index of the thick pipe 1 can be conveniently measured to judge whether the refrigerant is filled in a proper amount. When the air conditioner connecting pipe 100 is installed on the thin pipe 2, after the refrigerant is filled, the refrigeration mode is started, the thick pipe 1, the thin pipe 2, the indoor unit and the outdoor unit form cold chain circulation, the pressure index of the thick pipe 1 is detected on the first detection valve of the thick pipe 1, whether the filling amount of the refrigerant reaches the detection standard can be detected, and if the pressure index does not reach the detection standard, namely the filling amount of the refrigerant does not reach the running condition of the air conditioner, the refrigerant needs to be filled continuously. And stopping filling the refrigerant if the pressure index reaches the detection standard, namely the refrigerant filling amount reaches the operating condition of the air conditioner.
Since the refrigerant is continuously filled into the narrow tube 2, if the pressure index in the narrow tube 2 is measured on the narrow tube 2, the measured result is not accurate enough. Therefore, the first detection valve on the thick pipe 1 is needed to measure the pressure index in the thick pipe 1, and whether the refrigerant perfusion amount reaches the air conditioner operation condition is accurately judged.
Example two:
the utility model provides an air conditioner connecting pipe 100, wherein connect two pipes of the indoor set of air conditioner and off-premises station respectively for thick pipe 1 and tubule 2, air conditioner connecting pipe 100 is including installing three-way valve 3 on thick pipe 1, and three-way valve 3 is connected with first connecting pipe 4, second connecting pipe 5 and third connecting pipe 6, and first connecting pipe 4 is connected with the one end of first coupling 41, and second connecting pipe 5 is connected with the one end of second coupling 51, third connecting pipe 6 with the one end of third coupling 61 is connected, and the both ends at thick pipe 1 are connected respectively to the other end of first coupling 41 and the other end of second coupling 51, and the other end of third coupling 61 is used for connecting the refrigerant jar, is equipped with normally closed valve 7 on the third connecting pipe 6, installs filter 8 on third connecting pipe 6. When the refrigerant is filled, the refrigerant tank is connected with the other end of the third pipe joint 61, the normally closed valve is opened, and the refrigerant in the refrigerant tank passes through the filter 8 and then enters the air conditioner through the three-way valve 3.
The two pipes for connecting an indoor unit and an outdoor unit of the air conditioner are respectively a thick pipe 1 and a thin pipe 2, and the air conditioner connecting pipe 100 is arranged on the thick pipe 1. The perfusion equipment is arranged between the connecting pipes of the indoor unit and the outdoor unit, and can be properly adjusted to ensure that the installation position of the perfusion equipment is in an operable position on a balcony.
A second detection valve (not shown) is mounted on the narrow tube 2. The pressure index of the thin tube 2 can be conveniently measured to judge whether the refrigerant is filled in a proper amount. When the air conditioner connecting pipe 100 is installed on the thick pipe 1, after the refrigerant is filled, the refrigeration mode is started, the thick pipe 1, the thin pipe 2, the indoor unit and the outdoor unit form cold chain circulation, the pressure index of the thin pipe 2 is detected on the second detection valve of the thin pipe 2, whether the filling amount of the refrigerant reaches the detection standard can be detected, and if the pressure index does not reach the detection standard, namely the filling amount of the refrigerant does not reach the running condition of the air conditioner, the refrigerant needs to be filled continuously. And stopping filling the refrigerant if the pressure index reaches the detection standard, namely the refrigerant filling amount reaches the operating condition of the air conditioner.
Since the refrigerant is continuously filled into the thick pipe 1, if the pressure index in the pipe is measured on the thick pipe 1, the measured result is not accurate enough. Therefore, the second detection valve on the thin tube 2 is needed to measure the pressure index in the thin tube 2, and whether the refrigerant perfusion amount reaches the air conditioner operation condition is accurately judged.
Example three:
an air conditioner connecting pipe 100, wherein two pipes connecting an indoor unit and an outdoor unit of an air conditioner are a thick pipe 1 and a thin pipe 2, respectively, the air conditioner connecting pipe 100 includes two three-way valves 3 installed on the thick pipe 1 and the thin pipe 2, respectively, each three-way valve 3 is connected with a first connecting pipe 4, a second connecting pipe 5 and a third connecting pipe 6, the first connecting pipe 4 is connected with one end of a first pipe joint 41, the second connecting pipe 5 is connected with one end of a second pipe joint 51, the third connecting pipe 6 is connected with one end of a third pipe joint 61, the other end of the first pipe joint 41 and the other end of the second pipe joint 51 are connected with both ends of the thick pipe 1 and both ends of the thin pipe 2, respectively, the other end of the third pipe joint 61 of one three-way valve 3 is used for connecting a refrigerant tank, a normally closed valve 7 is arranged on the third connecting pipe 6, a filter 8 is mounted at the spool of the three-way valve 3 connected to the third connection pipe 6 or on the third connection pipe 6. The filter 8 may be installed at a valve core of the three-way valve 3 connected to the third connection pipe 6 or on the third connection pipe 6, as long as it can satisfy that the refrigerant entering the air conditioner through the first connection pipe 4 and the second connection pipe 5 has no impurities.
The third embodiment is a redundant design, which is to avoid the situation that the refrigerant cannot be filled due to a problem in one of the three-way valves 3. At the time of measuring the pressure index, if the perfusion is performed on the thick tube 1, the pressure index in the thin tube 2 is measured on the thin tube 2, and conversely, if the perfusion is performed on the thin tube 2, the pressure index in the thick tube 1 is measured on the thick tube 1.
Example four:
a refrigerant filling method comprises the air conditioner, and comprises the following steps:
refrigerating operation of the air conditioner;
detecting the heat exchange capacity and power consumption of the air conditioner during operation, and judging the refrigerant shortage in the refrigerant circulating system according to the detection result;
and opening the refrigerant tank for filling.
The following three methods are available for measuring the refrigerant perfusion volume:
the first method comprises the following steps: install first detection valve on the thick pipe 1, still include after the step of opening the refrigerant jar and filling: further comprising the steps of:
and judging whether the refrigerant perfusion quantity meets the operating conditions of the air conditioner or not according to the pressure index of the measured first detection valve.
Because the refrigerant is continuously filled on the thin tube 2, if the pressure index in the tube is measured on the thin tube 2, the measured result is not accurate enough. Therefore, the first detection valve on the thick pipe 1 is needed to measure the pressure index in the thick pipe 1, and whether the refrigerant perfusion amount reaches the air conditioner operation condition is accurately judged. If the filling amount of the refrigerant reaches the running condition of the air conditioner, the refrigerant filling is stopped.
And the second method comprises the following steps: install the second on tubule 2 and detect the valve, still include the following step after the step of opening the refrigerant jar and filling:
and judging whether the refrigerant perfusion quantity meets the operating conditions of the air conditioner or not according to the pressure index of the measured second detection valve.
Since the refrigerant is continuously filled into the thick pipe 1, if the pressure index in the pipe is measured on the thick pipe 1, the measured result is not accurate enough. Therefore, the second detection valve on the thin tube 2 is needed to measure the pressure index in the thin tube 2, and whether the refrigerant perfusion amount reaches the air conditioner operation condition is accurately judged. If the filling amount of the refrigerant reaches the running condition of the air conditioner, the refrigerant filling is stopped.
And the third is that: the method also comprises the following steps after the step of opening the refrigerant tank for filling:
and judging whether the refrigerant perfusion quantity meets the operating conditions of the air conditioner or not according to the measured weight of the refrigerant tank. If the filling amount of the refrigerant reaches the running condition of the air conditioner, the refrigerant filling is stopped.
In practice, either of the first and third methods may be used simultaneously, or the second and third methods may be used simultaneously. By measuring whether the refrigerant perfusion quantity meets the running condition of the air conditioner, the high-pressure protection or the exhaust protection of the internal machine caused by overhigh refrigerating pressure is avoided. The refrigerant tank refrigeration can be measured through an electronic scale to ensure that the total filling amount is about the nameplate range.
Compared with the original filling mode, the invention has the advantages that the high-altitude dangerous operation can be removed, the filling can be carried out under the condition of ensuring the safety of personnel, and meanwhile, the refrigerant can be measured by the electronic scale to be refrigerated, so that the total filling quantity is ensured to be about the nameplate range, and the high-pressure protection or the exhaust protection of the internal machine caused by overhigh refrigeration pressure is avoided.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an air conditioner connecting pipe (100), wherein connect the indoor set of air conditioner and two pipes of off-premises station are thick pipe (1) and tubule (2) respectively, air conditioner connecting pipe (100) is including installing thick pipe (1) and/or three-way valve (3) on tubule (2), three-way valve (3) are connected with first connecting pipe (4), second connecting pipe (5) and third connecting pipe (6), first connecting pipe (4) are connected with the one end of first coupling (41), second connecting pipe (5) are connected with the one end of second coupling (51), third connecting pipe (6) are connected with the one end of third coupling (61), the other end of first coupling (41) and the other end of second coupling (51) are connected respectively the both ends of thick pipe (1) and/or the both ends of tubule (2), the three-way valve is characterized in that the other end of the third pipe joint (61) is used for being connected with a refrigerant tank, a normally closed valve (7) is arranged on the third connecting pipe (6), and a filter (8) is arranged at a valve core of the three-way valve (3) connected with the third connecting pipe (6) or on the third connecting pipe (6).
2. A connecting tube (100) for air conditioners according to claim 1 wherein the filter (8) is a mesh type filter.
3. Air conditioner connecting pipe (100) according to claim 1, characterized in that, the normally closed valve (7) is a touch pressure type interface valve.
4. An air conditioner, two pipes connecting an indoor unit and an outdoor unit of the air conditioner are respectively a thick pipe (1) and a thin pipe (2), and the air conditioner connecting pipe (100) as claimed in any one of claims 1 to 3 is installed on the thick pipe (1) and/or the thin pipe (2).
5. Air conditioner according to claim 4, characterized in that the thick pipe (1) is fitted with a first check valve.
6. Air conditioner according to claim 4, characterized in that a second detection valve is mounted on the tubule (2).
7. A refrigerant filling method of an air conditioner, applied to the air conditioner as claimed in any one of claims 4 to 6, the refrigerant filling method comprising the steps of:
the air conditioner operates in a refrigerating mode;
detecting the heat exchange capacity and power consumption of the air conditioner during operation, and judging the refrigerant shortage in a refrigerant circulating system according to the detection result;
and opening the refrigerant tank for filling.
8. The refrigerant filling method of an air conditioner according to claim 7, wherein the wide tube (1) is provided with a first detection valve, and after the step of opening the refrigerant tank for filling, the method further comprises: further comprising the steps of:
and judging whether the refrigerant perfusion quantity meets the operating condition of the air conditioner or not according to the measured pressure index of the first detection valve.
9. The refrigerant filling method of an air conditioner according to claim 7, wherein a second detection valve is installed on the narrow tube (2), and after the step of opening the refrigerant tank for filling, the method further comprises the following steps:
and judging whether the refrigerant perfusion quantity meets the operating condition of the air conditioner or not according to the measured pressure index of the second detection valve.
10. The refrigerant charging method as claimed in claim 7, further comprising, after the step of starting the refrigerant tank for charging:
and judging whether the refrigerant perfusion amount meets the running condition of the air conditioner or not according to the measured weight of the refrigerant tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910798162.7A CN110686324A (en) | 2019-08-27 | 2019-08-27 | Air conditioner connecting pipe, air conditioner and refrigerant filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910798162.7A CN110686324A (en) | 2019-08-27 | 2019-08-27 | Air conditioner connecting pipe, air conditioner and refrigerant filling method |
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| Publication Number | Publication Date |
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| CN110686324A true CN110686324A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910798162.7A Pending CN110686324A (en) | 2019-08-27 | 2019-08-27 | Air conditioner connecting pipe, air conditioner and refrigerant filling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531963A (en) * | 2021-06-16 | 2021-10-22 | 青岛海尔空调器有限总公司 | Air conditioner debugging equipment |
-
2019
- 2019-08-27 CN CN201910798162.7A patent/CN110686324A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531963A (en) * | 2021-06-16 | 2021-10-22 | 青岛海尔空调器有限总公司 | Air conditioner debugging equipment |
| WO2022262278A1 (en) * | 2021-06-16 | 2022-12-22 | 青岛海尔空调器有限总公司 | Air conditioner debugging apparatus |
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