CN111780356B - Multi-connected unit air conditioning system and installation method thereof - Google Patents
Multi-connected unit air conditioning system and installation method thereof Download PDFInfo
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- CN111780356B CN111780356B CN202010836336.7A CN202010836336A CN111780356B CN 111780356 B CN111780356 B CN 111780356B CN 202010836336 A CN202010836336 A CN 202010836336A CN 111780356 B CN111780356 B CN 111780356B
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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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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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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Abstract
The application relates to a multi-connected unit air conditioning system and an installation method thereof, relating to the technical field of air conditioning installation. The refrigerant input pipe is connected with the refrigerant output end of the outdoor unit, and the refrigerant output pipe is connected with the refrigerant input end of the outdoor unit. The connecting tool comprises an input branch pipe, a refrigerant recovery pipe and an output branch pipe, wherein the input branch pipe is respectively connected with the refrigerant input end of the refrigerant input pipe and the refrigerant input end of the indoor unit. The output branch pipe is respectively connected with the refrigerant output pipe and the refrigerant output end of the indoor unit. One end of the refrigerant recovery pipe is correspondingly communicated with the side wall of the input branch pipe, and the other end of the refrigerant recovery pipe is communicated with the side wall of the output branch pipe. The flow direction adjusting piece is installed on the connecting tool and controls the refrigerant input path. The multi-split air conditioning system has the advantages that when part of indoor units are replaced, the refrigerant of the whole system does not need to be recycled, and the testing efficiency of the multi-split air conditioning system is improved.
Description
Technical Field
The application relates to the field of air conditioner installation, in particular to a multi-connected unit air conditioning system and an installation method thereof.
Background
At present, a multi-split air conditioning system is one of central air conditioners and can be called as 'one split multiple', wherein one refers to an outdoor unit, and multiple refers to multiple indoor units, wherein the outdoor unit is divided into a plurality of copper pipes by the aid of the indoor units, and each copper pipe is communicated with one indoor unit. The outdoor unit realizes indoor refrigeration through an air cooling heat exchange mode and the indoor unit realizes indoor refrigeration through an evaporation heat exchange mode, and the indoor unit is widely applied to small and medium-sized buildings.
The multi-split air conditioning system is installed, after the multi-split air conditioning system is vacuumized and filled with the refrigerant, the multi-split air conditioning system needs to be tested, in the testing process, if a part of indoor units need to be replaced when a problem is found, the refrigerant of the whole system needs to be recovered, and after the indoor units are replaced, the whole system can be continuously tested after being vacuumized and filled with the refrigerant.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: generally, the vacuumizing time of the multi-connected unit air conditioning system needs more than one hour, if the number of indoor units and outdoor units connected with the multi-connected unit air conditioning system is large, the vacuumizing time needs several hours, and the testing efficiency is low.
Disclosure of Invention
In order to solve the problem of improving the testing efficiency of a multi-connected unit air conditioning system, the application provides the multi-connected unit air conditioning system and an installation method thereof.
In a first aspect, the multi-connected unit air conditioning system provided by the application adopts the following technical scheme:
a multi-connected unit air conditioning system comprises an outdoor unit, a refrigerant input pipe, a refrigerant output pipe, a plurality of indoor units, a plurality of connecting tools and a plurality of flow direction adjusting pieces; the refrigerant input pipe is connected with the refrigerant output end of the outdoor unit, and the refrigerant output pipe is connected with the refrigerant input end of the outdoor unit;
the connecting tool comprises an input branch pipe, a refrigerant recovery pipe and an output branch pipe, wherein one end of the input branch pipe is communicated with the side wall of the refrigerant input pipe, and the other end of the input branch pipe is correspondingly connected with the refrigerant input end of the indoor unit; one end of the output branch pipe is communicated with the side wall of the refrigerant output pipe, and the other end of the output branch pipe is correspondingly connected with the refrigerant output end of the indoor unit;
one end of the refrigerant recovery pipe is correspondingly communicated with the side wall of the input branch pipe, and the other end of the refrigerant recovery pipe is communicated with the side wall of the output branch pipe;
the flow direction adjusting piece is installed on the connecting tool and controls a refrigerant input path.
By adopting the technical scheme, when the multi-connected unit air conditioning system normally operates, the refrigerant recovery pipe is closed by using the flow direction regulating piece, and the refrigerant is introduced into the indoor unit; when a certain indoor unit of the multi-connected unit air conditioning system is replaced, the refrigerant input of the indoor unit is cut off by the flow direction regulating piece, so that the refrigerant flows from the refrigerant recovery pipe. Therefore, when part of indoor units are replaced, the refrigerant of the whole system does not need to be recovered, and the testing efficiency of the multi-split air-conditioning system is improved.
Preferably, the flow direction regulating member is located at a connection position of the refrigerant recovery pipe and the input branch pipe and the output branch pipe;
the flow direction regulating part comprises a first three-way joint and an opening and closing component, the first three-way joint comprises first connecting pipes which are arranged oppositely and a second connecting pipe which is positioned between the two first connecting pipes, the two first connecting pipes of the same first three-way joint are correspondingly connected with one input branch pipe or one output branch pipe, and the second connecting pipe of the first three-way joint is correspondingly connected with one end part of the refrigerant recovery pipe;
the opening and closing member is positioned in the first three-way joint and at the joint of the first connecting pipe and the second connecting pipe.
By adopting the technical scheme, the first three-way joint is used for communicating the refrigerant recovery pipe with the input branch pipe or the output branch pipe, and the opening and closing component is used for plugging the first connecting pipe or the second connecting pipe, so that whether a refrigerant is input into the indoor unit or not can be conveniently regulated and controlled, and the refrigerant recovery of the indoor unit needing to be replaced can be conveniently carried out under the condition that the whole air conditioning system is closed to operate.
Preferably, the opening and closing member comprises a support pillar, a connecting rod connected with the support pillar, an electromagnetic ring sleeved on the connecting rod and an annular magnet, the support pillar and the second connecting pipe are coaxially arranged, and one end of the support pillar, which is far away from the pipe orifice of the second connecting pipe, is connected with the inner wall of the first connecting pipe;
the three connecting rods are arranged and correspond to the pipe orifices of the first three-way joint respectively;
the outer wall of the electromagnetic ring is correspondingly connected with the outer wall of the first connecting pipe or the second connecting pipe, and the annular magnet is positioned on one side of the electromagnetic ring, which is far away from the supporting column;
the inner wall of the annular magnet is attached to the outer wall of the connecting rod, and the outer diameter of the annular magnet is between the value ranges of the inner diameter and the outer diameter of the electromagnetic ring;
and a resetting component for driving the annular magnet to reset is also arranged in the first three-way joint.
Through adopting above-mentioned technical scheme, the support column is used for supporting and fixed link, and under the circumstances that the electromagnetic ring is not electrified, canceling release mechanical system pulling cyclic annular magnetite makes electromagnetic ring and cyclic annular magnetite separation, and the refrigerant can make the refrigerant circulation from the inner wall of the outer wall flow electromagnetic ring of cyclic annular magnetite after getting into in the first three way connection. Under the condition that the electromagnetic ring is electrified, the electromagnetic ring attracts the annular magnet to enable the annular magnet to slide along the axial direction of the connecting rod until the electromagnetic ring and the annular magnet are magnetically attracted, and a refrigerant conveying channel in the pipeline in a certain direction of the first three-way joint is blocked.
Preferably, the resetting component comprises an elastic rope and an anti-falling rod, and the anti-falling rod is mounted at one end, far away from the second three-way joint, of the connecting rod;
one end of the elastic rope is connected with one side, far away from the electromagnetic ring, of the annular magnet, the other end of the elastic rope is connected with the side wall of the first three-way joint, and the elastic rope is connected with the inner wall, facing the pipe orifice, of the first three-way joint.
By adopting the technical scheme, when the electromagnetic ring and the annular magnet are magnetically attracted, the elastic rope is stretched in a pulling way, when the electromagnetic ring is powered off, the electromagnetic ring and the annular magnet lose the attraction force of connection, the elastic rope automatically resets to the free length, and the annular magnet is pulled to reset. The anti-falling rod is used for reducing the occurrence of the condition that the annular magnet is separated from the connecting rod when the annular magnet is reset.
Preferably, the first connecting pipe is detachably connected to the second connecting pipe.
Through adopting above-mentioned technical scheme, first connecting pipe can be dismantled with the second connecting pipe and be connected, can be more for opening and close the component and reset the component and install to first three way connection in.
Preferably, the connecting tool further comprises a pressure gauge, and the pressure gauge is installed on the output branch pipe.
By adopting the technical scheme, the pressure gauge can be convenient for testers to observe pressure data in the indoor unit, whether the refrigerant of the indoor unit is completely recovered or not is judged through the indicating number of the pressure gauge, and the safety of replacing the indoor unit during testing is improved.
In a second aspect, the installation method of the multi-connected unit air conditioning system provided by the application adopts the following technical scheme:
the installation method of the multi-connected unit air conditioning system comprises the following steps:
s1: stacking field materials, namely stacking an outdoor unit, a refrigerant input pipe, a refrigerant output pipe, an indoor unit, a connecting tool and a flow direction regulating piece on a shelf on the field, wherein the shelf is placed at a dry ventilation position; the two ends of the refrigerant input pipe and the refrigerant output pipe are sealed;
s2: the outdoor unit is installed, wherein the installation position of the outdoor unit is selected, a foundation for supporting the outdoor unit is manufactured, then the outdoor unit is hoisted to the foundation, and then the outdoor unit is installed and fixed;
s3: indoor unit installation: sawing a hanging rod, manufacturing a hanging weight, then determining the indoor installation position of the indoor unit by adopting an infrared positioning instrument, making marks, punching holes, installing the hanging weight, and hanging the indoor unit on the hanging weight; adjusting the position of the indoor unit and installing and fixing the indoor unit, wherein enough installation and maintenance space needs to be reserved around the indoor unit;
s4: and (3) refrigerant pipeline construction: designing an installation support, a refrigerant input pipe, a refrigerant output pipe, a connection tool and a flow direction adjusting piece according to a drawing, and fixing the refrigerant input pipe, the refrigerant output pipe and the connection tool through the support;
s5: and (3) heat preservation installation of a pipeline system: installing a heat insulation material on the outer wall of the refrigerant pipeline;
s6: and (3) signal wire installation: setting power supply circuits of the indoor unit, the outdoor unit and the electromagnetic ring;
s7: vacuum drying;
s8: adding a cooling medium.
By adopting the technical scheme, the multi-connected unit air conditioning system can be installed, the connecting tool and the flow direction adjusting piece are installed, so that the circulation path of a refrigerant can be flexibly selected, and when the operation effect of the refrigerant of the multi-connected unit air conditioning system is tested, part of indoor units can be replaced without closing the whole system.
Preferably, the opening and closing member and the reset member are preassembled in the first three-way joint in step S1.
By adopting the technical scheme, the process of subsequent refrigerant pipeline construction can be saved, and the whole construction time is saved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the connecting tool and the flow direction adjusting piece, the refrigerant of the whole system does not need to be recovered when part of indoor units are replaced, and the effect of improving the testing efficiency of the multi-split air-conditioning system is achieved;
2. through the arrangement of the first three-way joint, the opening and closing member and the resetting member, the effects of conveniently regulating whether the refrigerant is input into the indoor unit and conveniently recycling the refrigerant of the indoor unit needing to be replaced under the condition of not closing the operation of the whole air conditioning system can be achieved;
3. through the setting of manometer, can play and be convenient for judge whether the refrigerant of indoor set is retrieved completely through the registration of observing the manometer, increased the effect of the security of changing the indoor set when the test.
Drawings
Fig. 1 is a schematic system configuration diagram of an air conditioning system according to an embodiment of the present application.
Fig. 2 is a sectional structural view of the flow direction regulating member.
Fig. 3 is a schematic flow structure diagram of an installation method of an air conditioning system according to an embodiment of the present application.
Description of reference numerals: 1. an outdoor unit; 11. a refrigerant input pipe; 12. a refrigerant output pipe; 13. an indoor unit; 2. connecting a tool; 21. an input branch pipe; 22. a refrigerant recovery pipe; 23. an output branch pipe; 24. a pressure gauge; 31. a first three-way joint; 32. a first connecting pipe; 33. a second connecting pipe; 4. an opening and closing member; 41. a support pillar; 42. a connecting rod; 43. an electromagnetic ring; 44. a ring-shaped magnet; 45. a second three-way joint; 5. a reset member; 51. an elastic cord; 52. the anticreep pole.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses multi-connected unit air conditioning system. Referring to fig. 1, the multi-connected unit air conditioning system includes an outdoor unit 1, a refrigerant input pipe 11, a refrigerant output pipe 12, a plurality of indoor units 13, a plurality of connection tools 2, and a plurality of flow direction adjusting members. The outdoor unit 1 is installed outdoors, and the refrigerant input pipe 11 is connected to the refrigerant output terminal of the outdoor unit 1, and the refrigerant output pipe 12 is connected to the refrigerant input terminal of the outdoor unit 1. The outdoor unit 1 is connected with each indoor unit 13 through a refrigerant input pipe 11 and a refrigerant output pipe 12, the connecting tool 2 is arranged corresponding to the indoor units 13 and communicated with the refrigerant input pipe 11 and the refrigerant output pipe 12, and the flow direction adjusting piece is installed on the connecting tool 2 and used for adjusting circulation of refrigerant.
Referring to fig. 1, the connection tool 2 includes an input branch pipe 21, a refrigerant recovery pipe 22, an output branch pipe 23 and a pressure gauge 24, one end of the input branch pipe 21 is communicated with the side wall of the refrigerant input pipe 11, and the other end is correspondingly connected with the refrigerant input end of the indoor unit 13; one end of the output branch pipe 23 is communicated with the side wall of the refrigerant output pipe 12, and the other end is correspondingly connected with the refrigerant output end of the indoor unit 13. One end of the refrigerant recovery pipe 22 is correspondingly communicated with the side wall of the input branch pipe 21, and the other end is communicated with the side wall of the output branch pipe 23, that is, a corresponding refrigerant recovery pipe 22 is correspondingly arranged on each indoor unit 13. A pressure gauge 24 is installed on the output branch pipe 23 for monitoring the pressure inside the indoor unit 13.
Referring to fig. 1 and 2, the flow direction adjusting member is located at a connection position of the refrigerant recovery pipe 22 and the input and output branch pipes 21 and 23, the flow direction adjusting member includes a first three-way joint 31, an opening and closing member 4 and a reset member 5, the first three-way joint 31 includes a first connection pipe 32 and a second connection pipe 33 located between the two first connection pipes 32, the two first connection pipes 32 are integrally formed, the second connection pipe 33 is separately provided from the first connection pipe 32, after the opening and closing member 4 and the reset member 5 are installed in the first connection pipe 32, the second connection pipe 33 is inserted into a connection position of the two first connection pipes 32, and then the second connection pipe 33 is welded and fixed. Each input branch pipe 21 and each output branch pipe 23 are cut into two sections, two first connecting pipes 32 of the same first three-way joint 31 are correspondingly connected with one input branch pipe 21 or one output branch pipe 23, the cut input branch pipes 21 or the cut output branch pipes 23 are connected into a whole through the first connecting pipes 32, and a second connecting pipe 33 of the first three-way joint 31 is correspondingly connected with one end part of the refrigerant recovery pipe 22.
Referring to fig. 2, the opening and closing member 4 includes a supporting column 41, a connecting rod 42, an electromagnetic ring 43, and a ring magnet 44, the supporting column 41 is disposed coaxially with the second connecting pipe 33, and one end of the supporting column 41, which is far away from the nozzle of the second connecting pipe 33, is connected to the inner wall of the first connecting pipe 32. One end of the support column 41 facing the pipe orifice of the second connection pipe 33 is connected with a second three-way joint 45, and the pipe orifice of the second three-way joint 45 faces the pipe orifice of the first three-way joint 31 and is correspondingly arranged. The connecting rods 42 are provided with three and inserted into the respective pipe orifices of the second three-way joint 45. The electromagnetic ring 43 is sleeved on the circumferential direction of the connecting rod 42, the outer wall of the electromagnetic ring 43 is abutted against the inner wall of the first connecting pipe 32 or the second connecting pipe 33, the electromagnetic ring 43 can be waterproof, and a lead of the electromagnetic ring 43 penetrates through the pipe wall of the first three-way joint 31 to extend out and is connected with an electric cabinet of the multi-connected unit air conditioning system, so that the electromagnetic ring 43 is controlled to be opened and closed.
The annular magnet 44 is also sleeved on the connecting rod 42 and located on one side of the electromagnetic ring 43 away from the supporting column 41, the inner wall of the annular magnet 44 is attached to the outer wall of the connecting rod 42, and the outer diameter of the annular magnet 44 is between the value ranges of the inner diameter and the outer diameter of the electromagnetic ring 43. When the electromagnetic ring 43 is energized, the electromagnetic ring 43 attracts the annular magnet 44 so that the annular magnet 44 slides along the axial direction of the connecting rod 42 until the electromagnetic ring 43 and the annular magnet 44 magnetically attract each other, thereby blocking the refrigerant conveying passage in the pipeline in one direction of the first three-way joint 31.
Referring to fig. 2, the restoring member 5 includes an elastic cord 51 and a retaining rod 52, one end of the elastic cord 51 is connected to the side of the ring magnet 44 away from the electromagnetic ring 43, and the other end is connected to the inner wall of the first three-way joint 31 facing the pipe orifice. The anti-drop rod 52 is installed at one end of the connecting rod 42 away from the second three-way joint 45. When the electromagnetic ring 43 and the annular magnet 44 are magnetically attracted, the elastic rope 51 is stretched in tension; when the electromagnetic ring 43 is powered off, the electromagnetic ring 43 and the annular magnet 44 lose the attraction force of connection, the elastic rope 51 automatically resets to the free length, and the annular magnet 44 is pulled to reset. The ring magnet 44 is less likely to be separated from the connecting rod 42 by the limit of the separation preventing rod 52.
The implementation principle of a multi-connected unit air conditioning system in the embodiment of the application is as follows: when a certain indoor unit 13 is normally operated, the refrigerant recovery pipe 22 corresponding to the indoor unit 13 is closed by the flow direction adjusting member, so that the refrigerant conveyed from the refrigerant input pipe 11 enters the indoor unit 13 through the input branch pipe 21, and then is conveyed to the refrigerant output pipe 12 through the output branch pipe 23, and then is conveyed to the outdoor unit 1 through the refrigerant output pipe 12.
When a certain indoor unit 13 needs to be detected or replaced, the flow direction regulator closes the passage between the inlet branch pipe 21 corresponding to the indoor unit 13 and the indoor unit 13, that is, the refrigerant inlet of the indoor unit 13 to be replaced or detected is cut off, and the compressor of the outdoor unit 1 recovers the refrigerant from the indoor unit 13. And observing the reading of the pressure gauge 24, and when the pressure gauge 24 displays that the pressure is negative pressure, indicating that the refrigerant in the indoor unit 13 is completely recovered. Then, the flow direction regulating member is used again to close the passage between the indoor unit 13 and the corresponding outlet branch pipe 23, and open the passage between the refrigerant recovery pipe 22 corresponding to the indoor unit 13 and the corresponding outlet branch pipe 23, so that the refrigerant circulation path becomes: the refrigerant enters the output branch pipe 23 from the input branch pipe 21 through the refrigerant recovery pipe 22 and is conveyed to the refrigerant output pipe 12, i.e. the refrigerant does not flow through the indoor unit 13, and the indoor unit 13 which needs to be replaced can be replaced.
After the replacement operation is completed, the flow direction adjusting member opens the passages between the inlet branch pipe 21 corresponding to the indoor unit 13 and between the indoor unit 13 and the corresponding outlet branch pipe 23, and closes the refrigerant recovery pipe 22, and at this time, the circulation path of the refrigerant coming out of the indoor unit 13 becomes: enters the indoor unit 13 through the inlet branch pipe 21, is conveyed to the refrigerant outlet pipe 12 through the outlet branch pipe 23, and is conveyed to the outdoor unit 1 through the refrigerant outlet pipe 12, thereby completing the circulation of the refrigerant.
The refrigerant recovery pipe 22 and the flow direction adjusting part act together, and a circulation path of the refrigerant is arranged according to the working state of the multi-split air conditioner, so that when a certain indoor unit 13 in the multi-split air conditioner needs to be replaced, the refrigerant of the whole system does not need to be recovered, the outdoor unit 1 does not need to be closed, the use of other indoor units 13 is not influenced, and the test efficiency of the multi-split air conditioner system is improved. Wherein, the flow direction adjusting piece controls the circulation direction of the refrigerant by controlling the opening and closing of the electromagnetic ring 43 in the corresponding pipeline.
The embodiment of the application also discloses an installation method of the multi-connected unit air conditioning system. Referring to fig. 1 and 3, the installation method includes the steps of:
s1: stacking field materials, namely stacking the outdoor unit 1, the refrigerant input pipe 11, the refrigerant output pipe 12, the indoor unit 13, the connecting tool 2 and the flow direction regulating part on a field shelf, wherein the shelf is placed at a dry and ventilated position; the two ends of the refrigerant input pipe 11 and the refrigerant output pipe 12 are sealed by plastic films. As the pipelines of the refrigerant input pipe 11 and the refrigerant output pipe 12 are longer, the whole can be formed by welding a section of copper pipe, and nitrogen with the pressure of 0.02KPa is introduced into the copper pipe in the welding process.
Referring to fig. 2, the opening and closing member 4 and the reset member 5 are preassembled in the first three-way joint 31, and the pipe orifices of the first three-way joint 31 and the refrigerant recovery pipe 22 are sealed by plastic films, so that dust is reduced, and the sealing is removed when the refrigerant pipeline is laid.
Referring to fig. 1 and 3, S2: the outdoor unit 1 is installed, the installation position of the outdoor unit 1 is selected, a foundation for supporting the outdoor unit 1 is manufactured, then the outdoor unit 1 is hoisted to the foundation, and then the outdoor unit 1 is installed and fixed.
S3: the indoor unit 13 is installed: sawing a suspender to manufacture a hanging weight, then determining the indoor installation position of the indoor unit 13 by adopting an infrared locator, marking, punching to install the hanging weight, and hanging the indoor unit 13 on the hanging weight; the position of the indoor unit 13 is adjusted and the indoor unit 13 is installed and fixed, and enough installation and maintenance space needs to be left around the indoor unit 13.
S4: and (3) refrigerant pipeline construction: according to a refrigerant pipeline mounting support designed according to a drawing, a refrigerant input pipe 11, a refrigerant output pipe 12, a first three-way joint 31 and a refrigerant recovery pipe 22 are placed along the arrangement of the support in a segmented mode, then the sealing of pipe openings of the refrigerant input pipe 11, the refrigerant output pipe 12, the first three-way joint 31 and the refrigerant recovery pipe 22 is removed, the refrigerant input pipe 11, the refrigerant output pipe 12, the first three-way joint 31 and the refrigerant recovery pipe 22 are fixed through the support, and a circulating refrigerant pipeline is formed.
S5: and (3) heat preservation installation of a pipeline system: the heat insulation material is arranged on the outer wall of the refrigerant pipeline, and the heat insulation material of the refrigerant pipeline is a closed-cell foam heat insulation material which is flame-retardant at grade B1 and has heat resistance higher than 120 ℃. When the outer diameter D of the copper pipe is less than or equal to 12.7mm, the thickness of the heat-insulating layer is more than 15 mm; when the outer diameter D of the copper pipe is larger than or equal to 15.88mm, the thickness of the heat-insulating layer is larger than 20 mm.
S6: and (3) signal wire installation: the power supply lines of the indoor unit 13, the outdoor unit 1, and the electromagnetic ring 43 are provided.
S7: and (3) vacuum drying: carrying out a pressurizing test on the whole multi-connected unit air conditioning system after installation, and filling nitrogen into a refrigerant pipeline, wherein the nitrogen pressure is 3.8KPa, and the time is 24 hours; after 24 hours, check pressure for no leakage, let off nitrogen, and evacuate the entire system to-1.0 χ 105 pa.
S8: adding a refrigerant: and (4) calculating a supplementary refrigerant in a refrigerant pipeline of the whole multi-connected unit air conditioning system according to a designed drawing, and performing test operation and delivery for use.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (4)
1. The utility model provides a many online unit air conditioning system which characterized in that: the indoor unit comprises an outdoor unit (1), a refrigerant input pipe (11), a refrigerant output pipe (12), a plurality of indoor units (13), a plurality of connecting tools (2) and a plurality of flow direction adjusting pieces; the refrigerant input pipe (11) is connected with the refrigerant output end of the outdoor unit (1), and the refrigerant output pipe (12) is connected with the refrigerant input end of the outdoor unit (1);
the connecting tool (2) comprises an input branch pipe (21), a refrigerant recovery pipe (22) and an output branch pipe (23), one end of the input branch pipe (21) is communicated with the side wall of the refrigerant input pipe (11), and the other end of the input branch pipe is correspondingly connected with the refrigerant input end of the indoor unit (13); one end of the output branch pipe (23) is communicated with the side wall of the refrigerant output pipe (12), and the other end of the output branch pipe is correspondingly connected with the refrigerant output end of the indoor unit (13);
one end of the refrigerant recovery pipe (22) is correspondingly communicated with the side wall of the input branch pipe (21), and the other end of the refrigerant recovery pipe is communicated with the side wall of the output branch pipe (23);
the flow direction adjusting piece is arranged on the connecting tool (2) and controls a refrigerant input path;
the flow direction regulating part is positioned at the joint of the refrigerant recovery pipe (22) and the input branch pipe (21) and the output branch pipe (23);
the flow direction adjusting part comprises a first three-way joint (31) and an opening and closing component (4), the first three-way joint (31) comprises first connecting pipes (32) which are oppositely arranged and second connecting pipes (33) which are positioned between the two first connecting pipes (32), the two first connecting pipes (32) of the same first three-way joint (31) are correspondingly connected with one input branch pipe (21) or one output branch pipe (23), and the second connecting pipes (33) of the first three-way joint (31) are correspondingly connected with one end part of the refrigerant recovery pipe (22);
the opening and closing member (4) is positioned in the first three-way joint (31) and at the joint of the first connecting pipe (32) and the second connecting pipe (33);
the opening and closing member (4) comprises a supporting column (41), a connecting rod (42) connected with the supporting column (41), an electromagnetic ring (43) sleeved on the connecting rod (42) and a ring-shaped magnet (44), the supporting column (41) and the second connecting pipe (33) are coaxially arranged, and one end, far away from the pipe orifice of the second connecting pipe (33), of the supporting column (41) is connected with the inner wall of the first connecting pipe (32);
the three connecting rods (42) are arranged and respectively correspond to the pipe orifices of the first three-way joint (31); one end, facing the pipe orifice of the second connecting pipe (33), of the supporting column (41) is connected with a second three-way joint (45), and the direction of the pipe orifice of the second three-way joint (45) corresponds to the direction of the pipe orifice of the first three-way joint (31); the three connecting rods (42) are respectively inserted into the pipe orifices corresponding to the second three-way joints (45);
the outer wall of the electromagnetic ring (43) is correspondingly connected with the outer wall of the first connecting pipe (32) or the second connecting pipe (33), and the annular magnet (44) is positioned on one side, away from the supporting column (41), of the electromagnetic ring (43);
the inner wall of the annular magnet (44) is attached to the outer wall of the connecting rod (42), and the outer diameter of the annular magnet (44) is between the value ranges of the inner diameter and the outer diameter of the electromagnetic ring (43);
a resetting component (5) for driving the annular magnet (44) to reset is further arranged in the first three-way joint (31);
the resetting component (5) comprises an elastic rope (51) and an anti-falling rod (52), and the anti-falling rod (52) is installed at one end, away from the second three-way joint (45), of the connecting rod (42);
one end of the elastic rope (51) is connected with one side, far away from the electromagnetic ring (43), of the annular magnet (44), the other end of the elastic rope is connected with the side wall of the first three-way joint (31), and the elastic rope (51) is connected with the inner wall, facing the pipe orifice, of the first three-way joint (31);
connect frock (2) still include manometer (24), manometer (24) install in on output branch pipe (23).
2. A multi-split air conditioning system as claimed in claim 1, wherein: the first connecting pipe (32) is detachably connected with the second connecting pipe (33).
3. A method of installing a multi-split air conditioning system as set forth in claim 1 or 2, wherein: the method comprises the following steps:
s1: stacking field materials, namely stacking an outdoor unit (1), a refrigerant input pipe (11), a refrigerant output pipe (12), an indoor unit (13), a connecting tool (2) and a flow direction regulating piece on a field shelf, wherein the shelf is placed at a dry ventilation position; the two ends of the refrigerant input pipe (11) and the refrigerant output pipe (12) are sealed;
s2: the method comprises the steps that an outdoor unit (1) is installed, the installation position of the outdoor unit (1) is selected, a foundation for supporting the outdoor unit (1) is manufactured, then the outdoor unit (1) is hoisted to the foundation, and then the outdoor unit (1) is installed and fixed;
s3: the indoor unit (13) is installed: sawing a suspender to manufacture a hanging weight, then determining the indoor installation position of the indoor unit (13) by adopting an infrared locator, making marks, then punching holes to install the hanging weight, and hanging the indoor unit (13) on the hanging weight; adjusting the position of the indoor unit (13) and installing and fixing the indoor unit (13), wherein enough installation and maintenance space is required to be reserved around the indoor unit (13);
s4: and (3) refrigerant pipeline construction: designing an installation support, a refrigerant input pipe (11), a refrigerant output pipe (12) and a connecting tool (2) according to a drawing, and fixing the refrigerant input pipe (11), the refrigerant output pipe (12) and the connecting tool (2) through the support;
s5: and (3) heat preservation installation of a pipeline system: installing a heat insulation material on the outer wall of the refrigerant pipeline;
s6: and (3) signal wire installation: a power supply circuit for installing the indoor unit (13), the outdoor unit (1) and the electromagnetic ring (43);
s7: vacuum drying;
s8: adding a cooling medium.
4. The mounting method according to claim 3, wherein: in the step S1, the opening and closing member (4) and the return member (5) are preassembled in the first three-way joint (31).
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| CN2277474Y (en) * | 1996-10-24 | 1998-04-01 | 修志青 | Magnetic attraction self-closing water tap |
| US9458612B2 (en) * | 2013-03-15 | 2016-10-04 | Delta Faucet Company | Integrated solenoid valve for an electronic faucet |
| CN206017749U (en) * | 2016-08-29 | 2017-03-15 | 开维喜阀门集团有限公司 | A kind of solenoid vacuum valve |
| CN208254032U (en) * | 2018-05-17 | 2018-12-18 | 奥克斯空调股份有限公司 | A kind of connecting tooling and its air conditioner of multi-gang air-conditioner test |
| CN208431418U (en) * | 2018-05-31 | 2019-01-25 | 凯阀控股集团有限公司 | A kind of triplet commutation check-valves |
| CN109899956B (en) * | 2019-03-14 | 2020-09-18 | 湖北亚运景建设科技有限公司 | Installation method of multi-connected air conditioning system |
| CN210600232U (en) * | 2019-07-22 | 2020-05-22 | 凯斯特阀门集团有限公司 | Magnetic attraction sealed gate valve |
| CN111365512B (en) * | 2020-04-22 | 2022-09-09 | 慈溪市天行电器有限公司 | Electromagnetic valve for natural gas pipeline |
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