CN109631434B - System and method for filling refrigerant into air conditioner outdoor unit, air conditioner outdoor unit and air conditioning system - Google Patents
System and method for filling refrigerant into air conditioner outdoor unit, air conditioner outdoor unit and air conditioning system Download PDFInfo
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- CN109631434B CN109631434B CN201811523033.9A CN201811523033A CN109631434B CN 109631434 B CN109631434 B CN 109631434B CN 201811523033 A CN201811523033 A CN 201811523033A CN 109631434 B CN109631434 B CN 109631434B
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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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- 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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/001—Charging refrigerant to a cycle
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Abstract
The invention discloses a system and a method for filling a refrigerant into an air conditioner outdoor unit, the air conditioner outdoor unit and an air conditioning system. Wherein, fill the system that fills refrigerant includes: testing an air conditioner indoor unit; the connecting pipe is suitable for being connected with the testing air conditioner internal unit and the air conditioner external unit to be filled with the refrigerant, and at least one of the connecting pipe and the testing air conditioner internal unit is provided with a refrigerant filling port. The system for filling the refrigerant can save the process of welding the refrigerant process pipe on the air conditioner external unit, and completes the filling of the refrigerant in the external unit while performing operation test on the air conditioner external unit.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a system and a method for filling refrigerant into an air conditioner outdoor unit, the air conditioner outdoor unit and an air conditioning system.
Background
In the current household air conditioner, a refrigerant is generally filled into an air conditioner outdoor unit through a separate process pipe, and the refrigerant filling is completed before the operation test of the air conditioner outdoor unit is performed. However, the method of directly recombining the refrigerant into the air conditioner external unit through the refrigerant process pipe has the following problems: the arrangement of the refrigerant process pipe directly causes the complex production process of the air conditioner external unit, increases labor cost, reduces production efficiency and increases material cost; in addition, the refrigerant process pipe needs to be welded on an air conditioner external unit in a sealing mode, the sealing performance is difficult to guarantee, and the refrigerant is prone to leakage. Particularly, in an air conditioning system adopting combustible refrigerants, the refrigerant process pipe needs to adopt Lokring ring sealing or ultrasonic welding, and the leakage problem is more prominent. If a refrigerant process pipe is omitted, the refrigerant is directly filled into the air conditioner external unit through a low-pressure valve or a high-pressure valve on the air conditioner external unit, and the following adverse effects are also caused: the refrigerant is filled from the low-pressure valve, impact is exerted on the suction valve plate and the exhaust valve plate of the compressor in the external machine, the reliability of the compressor is influenced, and the fault probability of the compressor is increased; if fill the refrigerant from the high-pressure valve, then because the resistance effect of outer interior throttling component, fill and annotate efficiency and reduce certainly, improve and annotate the pressure, the security that the refrigerant was annotated is reduced certainly.
Therefore, the existing means for filling the refrigerant into the outdoor unit of the air conditioner still needs to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. In view of the above, the invention provides a system and a method for filling a refrigerant into an air conditioner outdoor unit, the air conditioner outdoor unit and an air conditioning system. The system for filling the refrigerant can save the process of welding the refrigerant process pipe on the air conditioner external unit, and completes the filling of the refrigerant in the external unit while performing operation test on the air conditioner external unit.
In one aspect, the present invention is directed to a system for charging an outdoor unit of an air conditioner with a refrigerant. According to an embodiment of the invention, the system comprises: testing an air conditioner indoor unit; the connecting pipe is suitable for being connected with the testing air conditioner internal unit and the air conditioner external unit to be filled with the refrigerant, and at least one of the connecting pipe and the testing air conditioner internal unit is provided with a refrigerant filling port.
According to the refrigerant filling system provided by the embodiment of the invention, the air conditioner internal unit for testing is communicated with the air conditioner external unit to be filled with the refrigerant through the connecting pipe, and the refrigerant is filled into the refrigerant filling opening. And then starting the test operation of the air conditioner external unit, circulating a refrigerant in at least one of the connecting pipe and the test air conditioner internal unit between the test air conditioner internal unit and the air conditioner external unit, and enabling the refrigerant to enter the air conditioner external unit. Therefore, the refrigerant in the outer unit is filled while the operation test of the outer unit of the air conditioner is carried out. The refrigerant filling system disclosed by the invention is adopted to fill the refrigerant into the air conditioner external unit, and a refrigerant process pipe is not required to be arranged on the air conditioner external unit in advance, so that the problems of poor sealing performance, increased cost, reduced production efficiency and the like caused by the arrangement of the refrigerant process pipe are avoided; compared with the method of directly filling the refrigerant through the low-pressure valve or the high-pressure valve of the outdoor unit, the system firstly fills the refrigerant into at least one of the connecting pipe and the indoor unit of the air conditioner for testing, and then the refrigerant enters the outdoor unit through normal outdoor unit testing operation, so that other units in the outdoor unit cannot be influenced or the safety problem is not caused. In addition, in prior art, fill in the outer machine of air conditioner and fill the refrigerant after, carry out the operation test to it again, not only increase the manufacturing site and occupy, still cause the refrigerant loss in the test process easily. The system of the invention completes the filling of the refrigerant when the air conditioner external unit is tested, and can reduce the occupation of the manufacturing field while avoiding the additional arrangement of a refrigerant process pipe. In conclusion, the refrigerant filling system can be conveniently applied to refrigerant filling of the air conditioner outdoor unit, the manufacturing efficiency of the air conditioner outdoor unit is improved, the manufacturing cost is reduced, and the product quality and the reliability are improved.
In addition, the refrigerant charging system according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the coolant filling port is a copper pipe, a threaded joint or a quick coupling.
In some embodiments of the present invention, at least one of the copper tube, the threaded fitting, and the quick coupling is adapted to be coupled to an external coolant source. In some embodiments of the present invention, the connection pipe includes a high pressure pipe and a low pressure pipe, and the filling port is provided on at least one of the high pressure pipe and the low pressure pipe.
In some embodiments of the present invention, the refrigerant charging system further comprises: and the vacuumizing device is connected with the filling port. Before the air conditioner outdoor unit is filled with the refrigerant, the air conditioner outdoor unit is vacuumized by a vacuumizing device in advance. This can further improve the refrigerant charging efficiency.
In another aspect of the present invention, the present invention provides a method for filling refrigerant into an outdoor unit of an air conditioner by using the refrigerant filling system of the above embodiment. According to an embodiment of the invention, the method comprises: (1) connecting an air conditioner external unit to be filled with a refrigerant with an air conditioner internal unit for testing through a connecting pipe; (2) filling a refrigerant into a refrigerant filling port on at least one of the connecting pipe and the test air conditioner indoor unit; (3) and testing and operating the air conditioner external unit so as to enable the refrigerant to enter the air conditioner external unit.
According to the refrigerant filling method provided by the embodiment of the invention, the test air conditioner internal unit is communicated with the air conditioner external unit to be filled with the refrigerant through the connecting pipe, and the refrigerant is filled into the refrigerant filling port of at least one of the connecting pipe and the test air conditioner internal unit. And then starting the test operation of the air conditioner external unit, circulating a refrigerant in at least one of the connecting pipe and the test air conditioner internal unit between the test air conditioner internal unit and the air conditioner external unit, and enabling the refrigerant to enter the air conditioner external unit. Therefore, the refrigerant in the outer unit is filled while the operation test of the outer unit of the air conditioner is carried out. By adopting the method of the invention to fill the refrigerant into the air conditioner outdoor unit, the refrigerant process pipe does not need to be arranged on the air conditioner outdoor unit in advance, thus avoiding the problems of poor sealing performance, increased cost, reduced production efficiency and the like caused by the arrangement of the refrigerant process pipe; compared with the method of directly filling the refrigerant through the low-pressure valve or the high-pressure valve of the outdoor unit, the method of the invention firstly fills the refrigerant into at least one of the connecting pipe and the indoor unit of the air conditioner for testing, and then the refrigerant enters the outdoor unit through normal outdoor unit test operation, thereby not influencing other units in the outdoor unit or generating safety problems. In addition, in prior art, fill in the outer machine of air conditioner and fill the refrigerant after, carry out the operation test to it again, not only increase the manufacturing site and occupy, still cause the refrigerant loss in the test process easily. The method of the invention completes the filling of the refrigerant when the air conditioner outdoor unit is tested, and can reduce the occupation of the manufacturing field while avoiding the additional arrangement of the refrigerant process pipe. In conclusion, the refrigerant filling method can be conveniently applied to refrigerant filling of the air conditioner outdoor unit, improves the manufacturing efficiency of the air conditioner outdoor unit, reduces the manufacturing cost, and improves the product quality and reliability.
In addition, the method for filling the refrigerant into the outdoor unit of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, before the step (2), the air conditioner external unit is vacuumized in advance. This can further improve the refrigerant charging efficiency.
In some embodiments of the invention, a vacuum is connected to the fill port to perform the vacuuming process.
In some embodiments of the present invention, the vacuum degree in the vacuum-pumping process is controlled to be 0.01 to 100 Pa. Therefore, the filling efficiency of the refrigerant can be further improved, and the reliability of the air conditioner external unit product can be further improved.
In some embodiments of the present invention, in the step (2), the filling pressure of the refrigerant is 0.01 to 100 MPa. Therefore, the filling efficiency of the refrigerant can be further improved, and the production safety can be further improved.
In still another aspect of the present invention, an outdoor unit for an air conditioner is provided. According to an embodiment of the present invention, the outdoor unit of an air conditioner includes: the air conditioner comprises a high-pressure valve, a low-pressure valve and a connecting pipe, wherein the connecting pipe is suitable for connecting the air conditioner external unit with the air conditioner internal unit, at least one of the high-pressure valve and the low-pressure valve is connected with the connecting pipe, and the connecting pipe is provided with a refrigerant filling port. Therefore, the outdoor unit can be filled with the refrigerant through the connecting pipe for connecting with the outdoor unit and the refrigerant filling system or the method for filling the refrigerant of the embodiment. Furthermore, a closed refrigerant pipeline can be adopted in the condenser of the air conditioner outdoor unit, the problems of poor sealing performance, high cost, low production efficiency and the like caused by the arrangement of a refrigerant process pipe are solved, and the air conditioner outdoor unit has higher quality and reliability.
In some embodiments of the present invention, the coolant filling port is a copper pipe, a threaded joint or a quick coupling.
In yet another aspect of the present invention, an air conditioning system is provided. According to an embodiment of the invention, the air conditioning system comprises the air conditioner outdoor unit of the embodiment. The air conditioning system has higher quality, reliability and production efficiency and lower production cost by adopting the air conditioner external unit of the embodiment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a refrigerant charging system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a refrigerant charging system according to still another embodiment of the present invention;
fig. 3 is a schematic structural view of a refrigerant charging system according to another embodiment of the present invention;
fig. 4 is a flow chart illustrating a method for charging a refrigerant into an outdoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a refrigerant pipeline in a condenser of an outdoor unit of an air conditioner in the prior art;
fig. 6 is a schematic structural view illustrating a refrigerant pipe in a condenser of an outdoor unit of an air conditioner according to an embodiment of the present invention.
Description of reference numerals:
100: an air conditioner outdoor unit to be filled with a refrigerant; 200: testing an air conditioner indoor unit; 1: a condenser; 2: an evaporator; 3: a compressor; 4: a four-way valve; 5: a throttling element; 6: a high pressure valve; 7: a low pressure valve; 8: a connecting pipe; 9: an inner machine connector; 10: a refrigerant charging port; 11: a refrigerant pipeline; 12: filling a process tube with a conventional refrigerant; 81: a high-pressure connecting pipe; 82: a low pressure connection pipe; 83: a high-pressure vacuumizing and refrigerant filling quick connector; 84: a low-pressure vacuumizing and refrigerant filling quick connector; 85: a high-pressure quick connector tool; 86: low pressure quick-operation joint frock.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The inventor finds that the following problems exist in the method for filling the refrigerant into the air conditioner outdoor unit through the refrigerant process pipe according to the prior art in the research on the refrigerant filling process of the air conditioner outdoor unit: the arrangement of the refrigerant process pipe directly causes the complex production process of the air conditioner external unit, increases labor cost, reduces production efficiency and increases material cost; in addition, the refrigerant process pipe needs to be welded on an air conditioner external unit in a sealing mode, the sealing performance is difficult to guarantee, and the refrigerant is prone to leakage. Particularly, in an air conditioning system adopting combustible refrigerants, the refrigerant process pipe needs to adopt Lokring ring sealing or ultrasonic welding, and the leakage problem is more prominent. If a refrigerant process pipe is omitted, the refrigerant is directly filled into the air conditioner external unit through a low-pressure valve or a high-pressure valve on the air conditioner external unit, and the following adverse effects are also caused: the refrigerant is filled from the low-pressure valve, impact is exerted on the suction valve plate and the exhaust valve plate of the compressor in the external machine, the reliability of the compressor is influenced, and the fault probability of the compressor is increased; if fill the refrigerant from the high-pressure valve, then because the resistance effect of outer interior throttling component, fill and annotate efficiency and reduce certainly, improve and annotate the pressure, the security that the refrigerant was annotated is reduced certainly.
In view of the above, in one aspect of the present invention, a system for filling a refrigerant into an outdoor unit of an air conditioner is provided. According to an embodiment of the invention, the system comprises: the test air conditioner indoor unit comprises a test air conditioner indoor unit and a connecting pipe, wherein the connecting pipe is suitable for connecting the test air conditioner indoor unit and an air conditioner outdoor unit to be filled with a refrigerant, and at least one of the connecting pipe and the test air conditioner indoor unit is provided with a refrigerant filling port.
According to the refrigerant filling system provided by the embodiment of the invention, the air conditioner internal unit for testing is communicated with the air conditioner external unit to be filled with the refrigerant through the connecting pipe, and the refrigerant is filled into the refrigerant filling opening. And then starting the test operation of the air conditioner external unit, circulating a refrigerant in at least one of the connecting pipe and the test air conditioner internal unit between the test air conditioner internal unit and the air conditioner external unit, and enabling the refrigerant to enter the air conditioner external unit. Therefore, the refrigerant in the outer unit is filled while the operation test of the outer unit of the air conditioner is carried out. The refrigerant filling system disclosed by the invention is adopted to fill the refrigerant into the air conditioner external unit, and a refrigerant process pipe is not required to be arranged on the air conditioner external unit in advance, so that the problems of poor sealing performance, increased cost, reduced production efficiency and the like caused by the arrangement of the refrigerant process pipe are avoided; compared with the method of directly filling the refrigerant through the low-pressure valve or the high-pressure valve of the outdoor unit, the system firstly fills the refrigerant into at least one of the connecting pipe and the indoor unit of the air conditioner for testing, and then the refrigerant enters the outdoor unit through normal outdoor unit testing operation, so that other units in the outdoor unit cannot be influenced or the safety problem is not caused. In addition, in prior art, fill in the outer machine of air conditioner and fill the refrigerant after, carry out the operation test to it again, not only increase the manufacturing site and occupy, still cause the refrigerant loss in the test process easily. The system of the invention completes the filling of the refrigerant when the air conditioner external unit is tested, and can reduce the occupation of the manufacturing field while avoiding the additional arrangement of a refrigerant process pipe. In conclusion, the refrigerant filling system can be conveniently applied to refrigerant filling of the air conditioner outdoor unit, the manufacturing efficiency of the air conditioner outdoor unit is improved, the manufacturing cost is reduced, and the product quality and the reliability are improved.
It should be noted that, the "test air conditioner internal unit" described herein refers to a test device used for connecting and testing an air conditioner external unit in the production of the air conditioner external unit.
According to an embodiment of the present invention, a specific structure of the refrigerant filling port is not particularly limited, and according to a specific example of the present invention, the refrigerant filling port may be a copper pipe, a screw joint, or a quick coupling as long as the refrigerant filling port can be stably connected to a refrigerant source. According to an embodiment of the present invention, at least one of the copper pipe, the threaded joint and the quick coupling is adapted to be connected to an external refrigerant source. When the refrigerant filling port adopts a copper pipe, the process pipe for filling the refrigerant can be pressed on the refrigerant filling port in a compression joint mode; when the refrigerant filling port adopts a threaded joint, the process pipe for filling the refrigerant can be connected to the refrigerant filling port in a threaded connection mode; when the refrigerant filling port adopts the quick connector, the process pipe for filling the refrigerant can be connected with the refrigerant filling port in a mode matched with the quick connector. It should be noted that the specific structure of the quick coupling is not particularly limited, and a quick coupling commonly used in the art, such as a pull rod type quick coupling, may be adopted.
According to an embodiment of the present invention, the connection pipe includes a high pressure pipe and a low pressure pipe, and the filling port may be provided on at least one of the high pressure pipe and the low pressure pipe. Specifically, the air conditioner outdoor unit comprises a high-pressure valve and a low-pressure valve, the high-pressure pipe is suitable for being communicated with the high-pressure valve on the indoor unit and the high-pressure valve on the outdoor unit, and the low-pressure pipe is suitable for being communicated with the low-pressure valve on the indoor unit and the low-pressure valve on the outdoor unit, so that the indoor unit and the outdoor unit are communicated. Therefore, after the connecting pipe is filled with the refrigerant, the air conditioner external unit starts to be tested and operated, the refrigerant circulates between the air conditioner internal unit and the external unit through the high-pressure pipe and the low-pressure pipe, and after the air conditioner external unit has the target amount of refrigerant, the high-pressure valve and the low-pressure valve are closed, the refrigerant is reserved in the air conditioner external unit, and the refrigerant filling in the external unit is completed.
According to the embodiment of the present invention, the position of the charging port on the connection pipe is not particularly limited, and may be provided at a middle position of the connection pipe, or at a side of the connection pipe close to the air conditioner internal unit, for example.
According to the embodiment of the present invention, the position of the refrigerant charging port on the test air conditioner indoor unit is not particularly limited as long as the refrigerant can be charged into the charging port and introduced into the refrigerant circulation lines of the air conditioner indoor unit and the air conditioner outdoor unit.
According to some embodiments of the present invention, as shown in fig. 1, the refrigerant filling port 10 may be disposed on a connection pipe 8 connecting the air conditioner external unit 100 to be filled with refrigerant and the test air conditioner internal unit 200. According to other embodiments of the present invention, as shown in fig. 2, the refrigerant charging port 10 may also be disposed on the test air conditioner indoor unit 200, for example, between the evaporator 2 and the indoor unit joint 9. In fig. 1 and 2, the direction of the arrow indicates the flow direction of the refrigerant during the refrigerant charging and recovery.
According to the embodiment of the present invention, as shown in fig. 3, the refrigerant filling ports may be respectively disposed on the high-pressure connection pipe 81 and the low-pressure connection pipe 82 of the air conditioner external unit 100 and the test air conditioner internal unit 200 connected to the refrigerant to be filled, the refrigerant filling port disposed on the high-pressure connection pipe 81 is further connected to the high-pressure vacuum-pumping and refrigerant-filling quick coupling 83, and the refrigerant filling port disposed on the low-pressure connection pipe 82 is further connected to the low-pressure vacuum-pumping and refrigerant-filling quick coupling 84. And the high-pressure connecting pipe 81 is connected with the outdoor unit 100 of the air conditioner to be filled with the refrigerant through the high-pressure quick coupling tool 85, and the low-pressure connecting pipe 82 is connected with the outdoor unit 100 of the air conditioner to be filled with the refrigerant through the high-pressure quick coupling tool 86.
According to an embodiment of the present invention, a valve may be further disposed on the filling port. Therefore, after the refrigerant is filled into at least one of the connecting pipe and the test air conditioner indoor unit, the valve can be closed, and then subsequent test operation is carried out.
According to an embodiment of the present invention, the refrigerant charging system of the present invention further includes: and (4) a vacuumizing device. The vacuum extractor is connected to the fill port. Therefore, before the refrigerant is filled into the air conditioner external unit, the vacuumizing device is used for vacuumizing the air conditioner external unit in advance, and the filling efficiency of the refrigerant can be further improved. In some embodiments, the vacuum device can be connected to two or more filling ports at the same time, so that the vacuum device can simultaneously vacuumize two or more filling ports, and the vacuum pumping efficiency is higher and the effect is better.
In addition, in the prior art, after the air conditioner outdoor unit is vacuumized and filled with the refrigerant, the air conditioner outdoor unit filled with the refrigerant is sent to the running room for test running, and the outdoor unit refrigerant leakage loss is easy to occur in the process of sending the outdoor unit to the running room. According to the technical scheme, the air conditioner outdoor unit is vacuumized after being conveyed to the operation room, and the refrigerant is filled while test operation is performed, so that the occupation of a manufacturing site can be reduced, and the problems of refrigerant leakage, poor vacuum of the air conditioner outdoor unit and the like can be effectively solved.
In another aspect of the present invention, the present invention provides a method for filling refrigerant into an outdoor unit of an air conditioner by using the refrigerant filling system of the above embodiment. According to an embodiment of the invention, the method comprises: (1) connecting an air conditioner external unit to be filled with a refrigerant with an air conditioner internal unit for testing through a connecting pipe; (2) filling a refrigerant into a refrigerant filling port on at least one of the connecting pipe and the test air conditioner indoor unit; (3) and testing and operating the air conditioner external unit so as to enable the refrigerant to enter the air conditioner external unit.
According to the refrigerant filling method provided by the embodiment of the invention, the test air conditioner internal unit is communicated with the air conditioner external unit to be filled with the refrigerant through the connecting pipe, and the refrigerant is filled into the refrigerant filling port of at least one of the connecting pipe and the test air conditioner internal unit. And then starting the test operation of the air conditioner external unit, circulating a refrigerant in at least one of the connecting pipe and the test air conditioner internal unit between the test air conditioner internal unit and the air conditioner external unit, and enabling the refrigerant to enter the air conditioner external unit. Therefore, the refrigerant in the outer unit is filled while the operation test of the outer unit of the air conditioner is carried out. By adopting the method of the invention to fill the refrigerant into the air conditioner outdoor unit, the refrigerant process pipe does not need to be arranged on the air conditioner outdoor unit in advance, thus avoiding the problems of poor sealing performance, increased cost, reduced production efficiency and the like caused by the arrangement of the refrigerant process pipe; compared with the method of directly filling the refrigerant through the low-pressure valve or the high-pressure valve of the outdoor unit, the method of the invention firstly fills the refrigerant into at least one of the connecting pipe and the indoor unit of the air conditioner for testing, and then the refrigerant enters the outdoor unit through normal outdoor unit test operation, thereby not influencing other units in the outdoor unit or generating safety problems. In addition, in prior art, fill in the outer machine of air conditioner and fill the refrigerant after, carry out the operation test to it again, not only increase the manufacturing site and occupy, still cause the refrigerant loss in the test process easily. The method of the invention completes the filling of the refrigerant when the air conditioner outdoor unit is tested, and can reduce the occupation of the manufacturing field while avoiding the additional arrangement of the refrigerant process pipe. In conclusion, the refrigerant filling method can be conveniently applied to refrigerant filling of the air conditioner outdoor unit, improves the manufacturing efficiency of the air conditioner outdoor unit, reduces the manufacturing cost, and improves the product quality and reliability.
The method for filling the refrigerant according to the embodiment of the invention is further described in detail as follows:
according to the embodiment of the invention, before the step (2), the air conditioner external unit is vacuumized in advance. This can further improve the refrigerant charging efficiency.
According to the embodiment of the invention, the vacuumizing device is connected to the refrigerant filling port so as to perform vacuumizing treatment. In some embodiments, the vacuum-pumping device can be connected with two or more refrigerant charging ports at the same time, so that the vacuum-pumping device can simultaneously vacuum two or more charging ports, and the vacuum-pumping efficiency is higher and the effect is better.
According to the embodiment of the invention, the vacuum degree is controlled to be 0.01-100 Pa in the vacuum-pumping treatment. Therefore, the filling efficiency of the refrigerant can be further improved, and the reliability of the air conditioner external unit product can be further improved.
According to the embodiment of the invention, in the step (2), the filling pressure of the refrigerant is 0.01-100 MPa. According to the method, the refrigerant is filled into at least one of the connecting pipe and the test air conditioner internal unit through the filling port instead of being directly filled through the high-pressure valve or the low-pressure valve on the air conditioner external unit, so that on the premise of not influencing other units in the external unit or generating a safety problem, higher refrigerant filling pressure is adopted, the refrigerant filling efficiency is further improved, and the production safety is further improved.
It should be noted that the features and advantages described above for the refrigerant charging system are also applicable to the method for charging refrigerant, and are not described in detail here.
In still another aspect of the present invention, an outdoor unit for an air conditioner is provided. According to an embodiment of the invention, the air conditioner external unit comprises a high-pressure valve, a low-pressure valve and a connecting pipe, wherein the connecting pipe is suitable for connecting the air conditioner external unit with an air conditioner internal unit, at least one of the high-pressure valve and the low-pressure valve is connected with the connecting pipe, and a refrigerant filling port is formed in the connecting pipe. Therefore, the outdoor unit can be filled with the refrigerant through the connecting pipe for connecting with the outdoor unit and the refrigerant filling system or the method for filling the refrigerant of the embodiment. Furthermore, a closed refrigerant pipeline can be adopted in the condenser of the air conditioner outdoor unit, the problems of poor sealing performance, high cost, low production efficiency and the like caused by the arrangement of a refrigerant process pipe are solved, and the air conditioner outdoor unit has higher quality and reliability. In some embodiments of the present invention, the coolant filling port may be a copper pipe, a threaded joint, or a quick-connect.
The above "closed" is to be understood in a broad sense, and it can be understood by those skilled in the art that the refrigerant pipeline in the condenser includes an inlet and an outlet necessary for connecting with other components of the outdoor unit of the air conditioner, and the "closed refrigerant pipeline" means that the refrigerant pipeline does not have an opening for filling the refrigerant in addition to the above-mentioned necessary inlet and outlet. Referring to fig. 5 and 6, in the prior art, a refrigerant filling process pipe 12 is disposed on a refrigerant pipeline 11 of an outdoor unit condenser, and the refrigerant filling process pipe 12 is used to fill refrigerant into the refrigerant pipeline 11. The corresponding part on the refrigerant pipeline 11 of the condenser of the outdoor unit of the air conditioner is closed, and the refrigerant is filled by the refrigerant filling system or the refrigerant filling method of the embodiment, so that the problems of poor sealing performance, high cost, low production efficiency and the like caused by the refrigerant filling process pipe 12 arranged on the refrigerant pipeline 11 are effectively solved. Based on the structure, the invention also provides an air conditioner outdoor unit, and a condenser adopted by the air conditioner outdoor unit is provided with the closed refrigerant pipeline.
It should be noted that the features and advantages described above for the refrigerant filling system and the method for filling refrigerant are also applicable to the outdoor unit of the air conditioner, and are not described in detail herein.
In yet another aspect of the present invention, an air conditioning system is provided. According to an embodiment of the invention, the air conditioning system comprises the air conditioner outdoor unit of the embodiment. The air conditioning system has higher quality, reliability and production efficiency and lower production cost by adopting the air conditioner external unit of the embodiment.
It should be noted that the features and advantages described above for the refrigerant charging system, the method for charging refrigerant, and the outdoor unit of the air conditioner are also applicable to the air conditioner system, and are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
Referring to fig. 4, the refrigerant is filled into the air conditioner outdoor unit according to the following steps:
the outer machine of air conditioner cancels the refrigerant and fills notes technology pipe, the model machine does not take out the vacuum and fills the notes refrigerant before getting into the operation room, get into behind the operation room, pass through the connecting pipe with the test air conditioner inner machine in the operation room and be connected, and draw two or more refrigerant and fill the mouth on the connecting pipe, fill the mouth through two or more refrigerant and carry out the evacuation simultaneously, in order to shorten the evacuation time, fill in the refrigerant fills the mouth and fills the refrigerant after having taken out the vacuum, then test run detects, so that make the refrigerant get into the outer machine of air conditioner, accomplish the filling of refrigerant in the outer machine of air conditioner, the outer machine of air conditioner carries out next technological process refrigerant and reveals detection and follow-up process.
Example 2
Referring to fig. 4, the refrigerant is filled into the air conditioner outdoor unit according to the following steps:
the outer quick-witted cancellation refrigerant of air conditioner fills notes technology pipe, the model machine is not evacuation and fills the notes refrigerant before getting into the operation room, get into behind the operation room, pass through the connecting pipe with the test air conditioner indoor unit in the operation room and be connected, and draw two or more refrigerant and fill the mouth on the test indoor unit, fill the mouth through two or more refrigerant and carry out the evacuation simultaneously, in order to shorten the evacuation time, fill the refrigerant in the refrigerant fills the mouth after having taken out the vacuum, then test run detects, so that make the refrigerant get into the outer machine of air conditioner, accomplish the filling of refrigerant in the outer machine of air conditioner, the outer machine of air conditioner carries out next technological process refrigerant and reveals detection and follow-up process.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A method for charging a refrigerant into an outdoor unit of an air conditioner, comprising:
(1) connecting an air conditioner external unit to be filled with a refrigerant with an air conditioner internal unit for testing through a connecting pipe;
(2) connecting a vacuumizing device to a refrigerant filling port, simultaneously vacuumizing through two or more refrigerant filling ports, and then filling refrigerant into the refrigerant filling port on at least one of the connecting pipe and the test air conditioner indoor unit; the filling pressure of the refrigerant is 0.01-100 MPa;
(3) and testing and operating the air conditioner external unit so as to enable the refrigerant to enter the air conditioner external unit.
2. The method according to claim 1, wherein the degree of vacuum in the evacuation treatment is controlled to be 0.01 to 100 Pa.
3. A refrigerant charging system for implementing the method of claim 1 or 2, comprising:
testing an air conditioner indoor unit;
the connecting pipe is suitable for connecting the testing air conditioner internal unit and an air conditioner external unit to be filled with refrigerants, and at least one of the connecting pipe and the testing air conditioner internal unit is provided with two or more refrigerant filling ports;
and the vacuumizing device is connected with the refrigerant filling port.
4. The refrigerant charging system according to claim 3, wherein the refrigerant charging port is a copper pipe, a threaded joint, or a quick-connect.
5. The refrigerant charging system as recited in claim 4, wherein at least one of the copper tube, the threaded fitting and the quick connector is adapted to be connected to an external refrigerant source.
6. The refrigerant charging system according to claim 3, wherein the connection pipe includes a high pressure pipe and a low pressure pipe, and the refrigerant charging port is provided on at least one of the high pressure pipe and the low pressure pipe.
7. An outdoor unit for an air conditioner, comprising: the refrigerant charging system according to any one of claims 3 to 6, further comprising a high pressure valve, a low pressure valve and a connecting pipe, wherein the connecting pipe is adapted to connect the air conditioner external unit and the air conditioner internal unit, at least one of the high pressure valve and the low pressure valve is connected to the connecting pipe, and the connecting pipe has two or more refrigerant charging ports.
8. The outdoor unit of claim 7, wherein the refrigerant charging port is a copper pipe, a threaded joint or a quick-coupling.
9. An air conditioning system, comprising: an outdoor unit as claimed in claim 7 or 8.
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| CN201811523033.9A CN109631434B (en) | 2018-12-13 | 2018-12-13 | System and method for filling refrigerant into air conditioner outdoor unit, air conditioner outdoor unit and air conditioning system |
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| CN201811523033.9A CN109631434B (en) | 2018-12-13 | 2018-12-13 | System and method for filling refrigerant into air conditioner outdoor unit, air conditioner outdoor unit and air conditioning system |
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| US11841148B2 (en) | 2017-12-13 | 2023-12-12 | Electrolux Appliances Aktiebolag | Window-type air conditioner |
| WO2021110251A1 (en) * | 2019-12-04 | 2021-06-10 | Electrolux Appliances Aktiebolag | Air-conditioner with fluid tank |
| US11879647B2 (en) | 2021-12-22 | 2024-01-23 | Electrolux Appliances Aktiebolag | Portable air conditioning unit window installation system |
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