WO2019091431A1 - 多联机***及其压缩机油量调节方法和调节装置 - Google Patents
多联机***及其压缩机油量调节方法和调节装置 Download PDFInfo
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- WO2019091431A1 WO2019091431A1 PCT/CN2018/114617 CN2018114617W WO2019091431A1 WO 2019091431 A1 WO2019091431 A1 WO 2019091431A1 CN 2018114617 W CN2018114617 W CN 2018114617W WO 2019091431 A1 WO2019091431 A1 WO 2019091431A1
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- oil
- compressor
- unit
- line system
- adjusting device
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Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple 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
- F25B2500/00—Problems to be solved
- F25B2500/16—Lubrication
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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
- F25B2500/00—Problems to be solved
- F25B2500/18—Optimization, e.g. high integration of refrigeration components
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/03—Oil level
Definitions
- the invention relates to the technical field of air conditioners, in particular to a method for adjusting a compressor oil quantity of a multi-line system, a compressor oil quantity adjusting device of a multi-line system, and a multi-line system having the adjusting device.
- the compressor of the multi-line system needs sufficient lubrication of the lubricating oil. If the amount of the compressor oil is insufficient and the lubrication is insufficient, there will be a problem that the compressor power rises and the moving parts are worn and stuck, and the compressor is burned.
- the installation environment of the multi-line system requires that the installed piping is long or the indoor unit is relatively large, the lubricating oil remaining in the piping and the indoor unit of the system will increase compared with the multi-line system of the shorter piping.
- the system needs to charge more refrigeration oil.
- the lubricant added to the compressor may have problems such as system water inflow, mixed oil, and improper filling.
- Lubricating oil is added to the outdoor unit.
- the excess lubricating oil will enter the heat exchanger and the refrigerant connecting pipe, resulting in a decrease in the heat exchange performance of the heat exchanger and an increase in the pressure loss of the refrigerant connecting pipe, which seriously affects The operating efficiency of the system.
- the present invention aims to solve at least one of the technical problems in the above-mentioned techniques to some extent.
- the first object of the present invention is to provide a method for adjusting the amount of compressor oil in a multi-line system, which can control the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient. Adjust the oil storage capacity of the system to ensure the operating efficiency of the system.
- a second object of the present invention is to provide a non-transitory computer readable storage medium.
- a third object of the present invention is to provide a compressor oil amount adjusting device for a multi-line system.
- a fourth object of the present invention is to propose a multi-line system.
- a method for adjusting a compressor oil amount of a multi-line system includes an outdoor unit and a plurality of indoor units, and the outdoor unit includes a compressor and an oil. a separator, an outdoor heat exchanger, an external throttle valve, and a fuel amount adjusting device, the oil amount adjusting device is connected in parallel with the oil separator, and a first end of the oil amount adjusting device is connected to the compressor The exhaust port, the second end of the oil quantity adjusting device is connected to the outdoor heat exchanger through a four-way valve, and the third end of the oil quantity adjusting device is connected to a return air port of the compressor,
- the oil quantity adjusting device comprises an opening and closing unit, an oil storage tank and an oil quantity adjusting unit, the method comprising the steps of: detecting oil of the compressor every first preset time during operation of the multiple online system If the amount of oil of the compressor is insufficient, controlling the oil amount adjusting unit to be turned off after being turned on for a second prese
- the control oil quantity adjusting unit is turned off after the second preset time is turned on, and the cumulative opening time of the oil quantity adjusting unit is obtained, and whether the accumulated opening time exceeds the preset value is determined, and if the accumulated opening time exceeds the preset value and continues for the third pre- If it is not detected that the amount of oil of the compressor is insufficient, the oil storage tank is subjected to oil recovery by controlling the opening and closing unit and the oil amount adjusting unit. Therefore, the method can control the oil storage amount of the system to ensure the operating efficiency of the system by detecting the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient.
- compressor oil quantity adjustment method of the multi-line system according to the above embodiment of the present invention may further have the following additional technical features:
- the oil storage tank performs oil recovery when the opening and closing unit is in an open state and the oil amount adjusting unit is in a closed state.
- the opening and closing unit is controlled to be closed, and the oil amount adjusting unit is kept in a closed state.
- a first end of the oil separator is connected to an exhaust port of the compressor, and a second end of the oil separator is connected to a second end of the oil amount adjusting device, a third end of the oil separator is connected to a return air inlet of the compressor through a first capillary and a first electromagnetic valve, wherein the oil quantity adjusting unit comprises a second capillary and a second electromagnetic valve connected in series, the series connection a second capillary tube and a second solenoid valve are connected between the air return port of the compressor and the regulating port of the oil storage tank, the opening and closing unit includes a third electromagnetic valve, and the third electromagnetic valve is connected at the Between the exhaust port of the compressor and the inlet of the oil storage tank, a refrigerant outlet of the oil storage tank is connected to the outdoor heat exchanger through the four-way valve.
- a second aspect of the present invention provides a non-transitory computer readable storage medium having stored thereon a computer program, which is executed by a processor to implement a compressor oil amount of the above-described multi-line system Adjustment method.
- the non-transitory computer readable storage medium of the embodiment of the present invention can perform the adjustment of the opening and closing unit and the oil amount when detecting that the amount of oil of the compressor is insufficient by executing the compressor oil amount adjustment method of the multi-line system described above.
- the unit performs control to adjust the oil storage capacity of the system to ensure the operating efficiency of the system.
- a third aspect of the present invention provides a compressor oil amount adjusting device of a multi-line system, wherein the multi-line system includes an outdoor unit and a plurality of indoor units, and the outdoor unit includes a compressor and an oil.
- the oil quantity adjusting device comprises an opening and closing unit, an oil storage tank and an oil quantity adjusting unit, and the device comprises: an oil quantity detecting module, configured to detect the first preset time during the operation of the multiple online system Whether the amount of oil of the compressor is insufficient; the control module is configured to control the oil quantity adjusting unit to be turned off after the second preset time is turned on when the oil quantity of the compressor is insufficient; and the obtaining module is configured to acquire the oil quantity Accumulative opening of the adjustment unit
- the determining module is configured to determine whether the accumulated open time exceeds a preset
- the oil amount detecting module detects whether the oil quantity of the compressor is insufficient every first preset time, if the compressor If the amount of oil is insufficient, the control module controls the oil amount adjusting unit to be turned off after the second preset time is turned on, and obtains the cumulative opening time of the oil amount adjusting unit through the obtaining module, and determines whether the accumulated opening time exceeds the preset value by the determining module, if When the accumulated opening time exceeds the preset value and the amount of oil of the compressor is not detected to be insufficient for the third preset time, the control module controls the opening and closing unit and the oil amount adjusting unit to cause the oil storage tank to recover oil. Therefore, the device can control the oil storage amount of the system to ensure the operating efficiency of the system by detecting the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient.
- compressor oil amount adjusting device of the multi-line system may further have the following additional technical features:
- the oil storage tank performs oil recovery when the opening and closing unit is in an open state and the oil amount adjusting unit is in a closed state.
- control module is further configured to: when the oil storage tank performs oil recovery, if the amount of oil of the compressor is detected to be insufficient or the oil storage tank performs a recovery time of oil When the fourth preset time is reached, the opening and closing unit is controlled to be closed, and the oil amount adjusting unit is kept in a closed state.
- a first end of the oil separator is connected to an exhaust port of the compressor, and a second end of the oil separator is connected to a second end of the oil amount adjusting device, a third end of the oil separator is connected to a return air inlet of the compressor through a first capillary and a first electromagnetic valve, wherein the oil quantity adjusting unit comprises a second capillary and a second electromagnetic valve connected in series, the series connection a second capillary tube and a second solenoid valve are connected between the air return port of the compressor and the regulating port of the oil storage tank, the opening and closing unit includes a third electromagnetic valve, and the third electromagnetic valve is connected at the Between the exhaust port of the compressor and the inlet of the oil storage tank, a refrigerant outlet of the oil storage tank is connected to the outdoor heat exchanger through the four-way valve.
- a fourth aspect of the present invention provides a multi-line system including the above-described multi-line system compressor oil amount adjusting device.
- the compressor oil amount adjusting device of the multi-line system can control the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient.
- the system's oil storage is adjusted to ensure the operating efficiency of the system.
- FIG. 1 is a schematic structural diagram of a multi-line system according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a multi-line system according to another embodiment of the present invention.
- FIG. 3 is a flow chart of a method for adjusting a compressor oil amount of a multi-line system according to an embodiment of the present invention
- FIG. 4 is a flow chart of a method for adjusting a compressor oil amount of a multi-line system according to an embodiment of the present invention
- Figure 5 is a block schematic diagram of a compressor oil quantity adjusting device of a multiple-line system in accordance with an embodiment of the present invention.
- the multi-line system may include an outdoor unit 100 and a plurality of indoor units 200, and the outdoor unit 100 may include a compressor 110, an oil separator 120, and an outdoor heat exchanger. 130, the external throttle valve 140 and the oil amount adjusting device 150, the oil amount adjusting device 150 is connected in parallel with the oil separator 120, and the first end of the oil amount adjusting device 150 is connected to the exhaust port of the compressor 110, and the oil amount is adjusted.
- the second end of the device 150 is connected to the outdoor heat exchanger 130 through a four-way valve ST, and the third end of the oil amount adjusting device 150 is connected to the air return port of the compressor 110.
- the oil amount adjusting device 150 may include an opening and closing unit 151, and a storage unit.
- the oil quantity adjusting device 150 may further include an oil quantity detecting unit (not specifically shown in the figure), and the oil quantity detecting unit may be an oil viscosity meter for detecting oil temperature, oil level, etc., to determine whether the compressor is short of oil. .
- the first end of the oil separator 120 is connected to the exhaust port of the compressor 110, and the second end of the oil separator 120 is connected to the oil amount adjusting device 150.
- the second end is connected, the third end of the oil separator 120 is connected to the air return port of the compressor 110 through the first capillary C1 and the first electromagnetic valve SV1, respectively, and the oil amount adjusting unit 153 may include the second capillary C2 and the second in series.
- the solenoid valve SV2, the second capillary C2 and the second solenoid valve SV2 connected in series are connected between the air return port of the compressor 110 and the regulating port of the oil storage tank 152, and the opening and closing unit 151 may include a third electromagnetic valve SV3, the third electromagnetic The valve SV3 is connected between the exhaust port of the compressor 110 and the inlet of the oil storage tank 152, and the refrigerant outlet of the oil storage tank 152 is connected to the outdoor heat exchanger 130 through the four-way valve ST.
- the oil quantity adjusting device 150 and the oil separator 120 are in a parallel relationship, the first end of the oil quantity adjusting device 150 is connected to the exhaust port of the compressor 110, and the second end is connected to the inlet of the four-way valve ST. The third end is connected to the return port of the compressor 110 by a capillary.
- the oil amount adjusting device 150 is composed of an oil storage tank 152, an opening and closing unit 151, an oil amount detecting unit (not specifically shown in the drawing), and an oil amount adjusting unit 153, wherein the oil storage tank 152 can perform the exhaust of the compressor 110.
- the oil separation, opening and closing unit 151 is disposed at the inlet of the oil storage tank 152 (shown in FIG.
- the oil amount adjusting unit 153 may be a solenoid valve, or a solenoid valve and a capillary tube connected in series, or an electron. Expansion valve and the like.
- the oil storage tank 152 may be one or more, and the oil quantity adjusting unit 153 may be composed of a solenoid valve, or a solenoid valve and a capillary tube connected in series, or an electronic expansion valve, and the opening and closing unit 151 may be disposed in the oil storage tank.
- the inlet or outlet of 152 wherein the structural schematics shown in Figures 1 and 2 are only one embodiment of the present invention.
- FIG. 3 is a flow chart of a method of adjusting a compressor oil amount of a multi-line system according to an embodiment of the present invention.
- the compressor oil quantity adjustment method of the multi-line system of the embodiment of the present invention may include the following steps:
- the first preset time may be calibrated according to actual conditions.
- the oil viscosity, oil level and other parameters can be detected by an oil viscometer to determine whether the oil quantity of the compressor is insufficient.
- control oil quantity adjusting unit is turned off after being turned on for a second preset time, wherein the second preset time can be calibrated according to actual conditions.
- S3 Acquire an accumulated opening time of the oil quantity adjusting unit, and determine whether the accumulated opening time exceeds a preset value, wherein the preset value may be calibrated according to actual conditions.
- the oil storage tank is recovered by controlling the opening and closing unit and the oil amount adjusting unit, wherein The three preset times are greater than the first preset time, and the calibration may be performed according to actual conditions.
- the oil storage tank performs oil recovery when the opening and closing unit is in an open state and the oil amount adjusting unit is in a closed state.
- the opening and closing unit of the oil storage tank inlet and outlet is in a closed state, and the oil amount adjusting unit is also in a closed state.
- the control opening and closing unit When the accumulated opening time of the oil amount adjusting unit exceeds the preset value B and the amount of oil of the compressor is not detected within the third preset time t3, the control opening and closing unit is in an open state, and the oil amount adjusting unit is in a closed state.
- the oil storage tank In order to make the oil storage tank to recover oil. Therefore, it is possible to prevent the amount of oil in the compressor from being insufficient, the lubrication is insufficient, the compressor power is increased, the running parts are worn and jammed, and the compressor is burned, and when the amount of oil of the compressor is not detected, the oil is recovered. Store excess oil in the system in the storage tank.
- the control when the oil storage tank performs the recovery of the oil, if it is detected that the oil quantity of the compressor is insufficient or the oil storage tank performs the recovery oil for the fourth preset time, the control is opened and closed. The unit is turned off and the fuel level adjustment unit is turned off.
- the multi-line system exits the recovery oil operation, and judges whether or not according to the oil quantity of the compressor. Too much oil is recovered.
- the opening and closing unit is closed, the oil amount adjusting unit is in a closed state, the oil recovery is stopped, and the accumulated opening time of the oil amount adjusting unit is cleared.
- the multi-line system immediately exits the recovery oil operation and enters the above-mentioned oil quantity adjustment process, that is, the control oil quantity adjustment unit is turned on, and is turned off after the time t2 is turned on, and the timekeeping oil is accumulated.
- the opening time of the volume adjustment unit is a predefined period of time.
- the oil storage amount of the system can be controlled according to the installation characteristics of the system to ensure the operating efficiency of the system.
- FIG. 4 is a flow chart of a method for adjusting the amount of compressor oil in a multi-line system according to an embodiment of the present invention.
- the compressor oil quantity adjustment method of the multi-line system may include the following steps:
- the switch unit is in a closed state, and the oil amount adjusting unit is in a closed state.
- step S104 it is determined whether the amount of oil of the compressor is insufficient. If yes, go to step S105; if no, go back to step S103.
- the control oil quantity adjusting unit is turned on, and is turned off after the second preset time t2.
- step S107 Determine whether the accumulated open time exceeds the preset value B, and the third preset time t3 does not detect that the amount of oil of the compressor is insufficient. If yes, go to step S108; if no, go back to step S105.
- control opening and closing unit is turned on, the oil amount adjusting unit is turned off, and the oil storage tank performs oil recovery.
- step S109 Determine whether the oil quantity of the compressor is insufficient or the duration of the oil recovery of the oil storage tank reaches the fourth preset time t4. If yes, go back to step S101; if no, return to step S108.
- the compressor oil quantity adjustment method of the multi-line system detects whether the oil quantity of the compressor is insufficient every first preset time during the operation of the multi-line system, if the compressor If the amount of oil is insufficient, the control oil quantity adjusting unit is turned off after the second preset time is turned on, and the accumulated opening time of the oil quantity adjusting unit is obtained, and whether the accumulated opening time exceeds the preset value is determined, and if the accumulated opening time exceeds the preset value And if the amount of oil of the compressor is not detected for the third predetermined time, the oil storage tank is subjected to oil recovery by controlling the opening and closing unit and the oil amount adjusting unit. Therefore, the method can control the oil storage amount of the system to ensure the operating efficiency of the system by detecting the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient.
- Figure 5 is a block schematic diagram of a compressor oil quantity adjusting device of a multiple-line system in accordance with an embodiment of the present invention.
- the multi-line system may include an outdoor unit 100 and a plurality of indoor units 200, and the outdoor unit 100 may include a compressor 110, an oil separator 120, and an outdoor heat exchanger. 130, the external throttle valve 140 and the oil amount adjusting device 150, the oil amount adjusting device 150 is connected in parallel with the oil separator 120, and the first end of the oil amount adjusting device 150 is connected to the exhaust port of the compressor 110, and the oil amount is adjusted.
- the second end of the device 150 is connected to the outdoor heat exchanger 130 through a four-way valve ST, and the third end of the oil amount adjusting device 150 is connected to the air return port of the compressor 110.
- the oil amount adjusting device 150 may include an opening and closing unit 151, and a storage unit.
- the oil tank 152 and the oil amount adjusting unit 153 may be included in the outdoor heat exchanger 130.
- the compressor oil quantity adjusting device of the multi-line system of the embodiment of the present invention may include: an oil quantity detecting module 10, a control module 20, an obtaining module 30, and a judging module 40.
- the oil quantity detecting module 10 is configured to detect whether the oil quantity of the compressor 110 is insufficient every first preset time during the operation of the multi-line system.
- the control module 20 is configured to control the oil amount adjusting unit 153 to be turned off after being turned on for a second preset time when the amount of oil of the compressor 110 is insufficient.
- the acquisition module 30 is configured to acquire the accumulated on time of the oil amount adjustment unit 153.
- the determining module 40 is configured to determine whether the accumulated opening time exceeds a preset value.
- the control module 20 is further configured to control the opening and closing unit 151 and the oil amount adjusting unit 153 to make the oil storage when the accumulated opening time exceeds the preset value and the amount of oil of the compressor 110 is not detected to be insufficient for the third predetermined time.
- the tank 152 performs recovery of oil, wherein the third preset time is greater than the first predetermined time.
- the oil storage tank 152 when the opening and closing unit 151 is in an open state and the oil amount adjusting unit 153 is in a closed state, the oil storage tank 152 performs oil recovery.
- control module 20 is further configured to: when the oil storage tank 152 performs oil recovery, if it is detected that the oil quantity of the compressor 110 is insufficient or the oil storage tank 152 performs the recovery of the oil for the fourth time
- the control opening and closing unit 151 is closed, and the oil amount adjusting unit 153 is kept in the closed state.
- the first end of the oil separator 120 is connected to the exhaust port of the compressor 110, and the second end of the oil separator 120 is connected to the second end of the oil amount adjusting device 150.
- the third end of the oil separator 120 is connected to the air return port of the compressor 110 through the first capillary C1 and the first electromagnetic valve SV1, respectively, and the oil amount adjusting unit 153 may include the second capillary C2 and the second electromagnetic valve SV2 connected in series.
- the second capillary C2 and the second electromagnetic valve SV2 connected in series are connected between the air return port of the compressor 110 and the regulating port of the oil storage tank 152.
- the opening and closing unit 151 may include a third electromagnetic valve SV3, and the third electromagnetic valve SV3 is connected. Between the exhaust port of the compressor 110 and the inlet of the oil storage tank 152, the refrigerant outlet of the oil storage tank 152 is connected to the outdoor heat exchanger 130 through the four-way valve ST.
- the oil amount detecting module detects whether the oil quantity of the compressor is insufficient every first preset time, if the compressor If the amount of oil is insufficient, the control module controls the oil amount adjusting unit to be turned off after the second preset time is turned on, and obtains the cumulative opening time of the oil amount adjusting unit through the obtaining module, and determines whether the accumulated opening time exceeds the preset value by the determining module, if When the accumulated opening time exceeds the preset value and the amount of oil of the compressor is not detected to be insufficient for the third preset time, the control module controls the opening and closing unit and the oil amount adjusting unit to cause the oil storage tank to recover oil. Therefore, the device can control the oil storage amount of the system to ensure the operating efficiency of the system by detecting the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient.
- embodiments of the present invention also provide a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by the processor, implements the compressor oil amount adjustment method of the multi-line system described above.
- the non-transitory computer readable storage medium of the embodiment of the present invention can perform the adjustment of the opening and closing unit and the oil amount when detecting that the amount of oil of the compressor is insufficient by executing the compressor oil amount adjustment method of the multi-line system described above.
- the unit performs control to adjust the oil storage capacity of the system to ensure the operating efficiency of the system.
- an embodiment of the present invention also proposes a multi-line system including the above-described multi-line system compressor oil amount adjusting device.
- the compressor oil amount adjusting device of the multi-line system can control the opening and closing unit and the oil amount adjusting unit when detecting that the amount of oil of the compressor is insufficient.
- the system's oil storage is adjusted to ensure the operating efficiency of the system.
- first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
- features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
- the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
- a "computer-readable medium” can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device.
- computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM).
- the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.
- portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
- multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
- a suitable instruction execution system For example, if implemented in hardware and in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.
- each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
- the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
- the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
- the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
- installation can be understood on a case-by-case basis.
- the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
- the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
- the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.
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Abstract
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Claims (10)
- 一种多联机***的压缩机油量调节方法,其特征在于,所述多联机***包括室外机和多个室内机,所述室外机包括压缩机、油分离器、室外换热器、外机节流阀和油量调节装置,所述油量调节装置与所述油分离器并联,且所述油量调节装置的第一端连接到所述压缩机的排气口,所述油量调节装置的第二端通过四通阀连接到所述室外换热器,所述油量调节装置的第三端连接到所述压缩机的回气口,所述油量调节装置包括开闭单元、储油罐和油量调节单元,所述方法包括以下步骤:在所述多联机***的运行过程中,每隔第一预设时间检测所述压缩机的油量是否不足;如果所述压缩机的油量不足,则控制所述油量调节单元开启第二预设时间后关闭;获取所述油量调节单元的累计开启时间,并判断所述累计开启时间是否超过预设值;如果所述累计开启时间超过预设值且持续第三预设时间未检测到所述压缩机的油量不足,则通过控制所述开闭单元和所述油量调节单元以使所述储油罐进行回收油,其中,所述第三预设时间大于所述第一预设时间。
- 如权利要求1所述的多联机***的压缩机油量调节方法,其特征在于,当所述开闭单元处于开启状态、所述油量调节单元处于关闭状态时,所述储油罐进行回收油。
- 如权利要求1或2所述的多联机***的压缩机油量调节方法,其特征在于,当所述储油罐进行回收油时,如果检测到所述压缩机的油量不足或者所述储油罐进行回收油的持续时间达到第四预设时间,则控制所述开闭单元关闭,并保持所述油量调节单元处于关闭状态。
- 如权利要求1-3中任一项所述的多联机***的压缩机油量调节方法,其特征在于,所述油分离器的第一端连接到所述压缩机的排气口,所述油分离器的第二端与所述油量调节装置的第二端相连,所述油分离器的第三端分别通过第一毛细管和第一电磁阀连接到所述压缩机的回气口,所述油量调节单元包括串联的第二毛细管和第二电磁阀,所述串联的第二毛细管和第二电磁阀连接在所述压缩机的回气口与所述储油罐的调节口之间,所述开闭单元包括第三电磁阀,所述第三电磁阀连接在所述压缩机的排气口与所述储油罐的入口之间,所述储油罐的冷媒出口与通过所述四通阀连接到所述室外换热器。
- 一种非临时性计算机可读存储介质,其上存储有计算机程序,其特征在于,该程序被处理器执行时实现如权利要求1-4中任一项所述的多联机***的压缩机油量调节方法。
- 一种多联机***的压缩机油量调节装置,其特征在于,所述多联机***包括室外机和多个室内机,所述室外机包括压缩机、油分离器、室外换热器、外机节流阀和油量调节装置,所述油量调节装置与所述油分离器并联,且所述油量调节装置的第一端连接到所述 压缩机的排气口,所述油量调节装置的第二端通过四通阀连接到所述室外换热器,所述油量调节装置的第三端连接到所述压缩机的回气口,所述油量调节装置包括开闭单元、储油罐和油量调节单元,所述装置包括:油量检测模块,用于在所述多联机***的运行过程中,每隔第一预设时间检测所述压缩机的油量是否不足;控制模块,用于在所述压缩机的油量不足时控制所述油量调节单元开启第二预设时间后关闭;获取模块,用于获取所述油量调节单元的累计开启时间;判断模块,用于判断所述累计开启时间是否超过预设值;所述控制模块还用于,在所述累计开启时间超过预设值且持续第三预设时间未检测到所述压缩机的油量不足时通过控制所述开闭单元和所述油量调节单元以使所述储油罐进行回收油,其中,所述第三预设时间大于所述第一预设时间。
- 如权利要求6所述的多联机***的压缩机油量调节装置,其特征在于,当所述开闭单元处于开启状态、所述油量调节单元处于关闭状态时,所述储油罐进行回收油。
- 如权利要求6或7所述的多联机***的压缩机油量调节装置,其特征在于,所述控制模块还用于,当所述储油罐进行回收油时,如果检测到所述压缩机的油量不足或者所述储油罐进行回收油的持续时间达到第四预设时间,则控制所述开闭单元关闭,并保持所述油量调节单元处于关闭状态。
- 如权利要求6-8中任一项所述的多联机***的压缩机油量调节装置,其特征在于,所述油分离器的第一端连接到所述压缩机的排气口,所述油分离器的第二端与所述油量调节装置的第二端相连,所述油分离器的第三端分别通过第一毛细管和第一电磁阀连接到所述压缩机的回气口,所述油量调节单元包括串联的第二毛细管和第二电磁阀,所述串联的第二毛细管和第二电磁阀连接在所述压缩机的回气口与所述储油罐的调节口之间,所述开闭单元包括第三电磁阀,所述第三电磁阀连接在所述压缩机的排气口与所述储油罐的入口之间,所述储油罐的冷媒出口与通过所述四通阀连接到所述室外换热器。
- 一种多联机***,其特征在于,包括如权利要求6-9中任一项所述的多联机***的压缩机油量调节装置。
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CN107975978A (zh) * | 2017-11-10 | 2018-05-01 | 广东美的暖通设备有限公司 | 多联机***及其压缩机油量调节方法和调节装置 |
AU2019454057B2 (en) * | 2019-06-24 | 2023-02-16 | Guangdong Meizhi Precision-Manufacturing Co., Ltd. | Compressor and heat exchange system |
WO2021179250A1 (en) * | 2020-03-12 | 2021-09-16 | Johnson Controls Technology Company | Systems and methods for controlling variable refrigerant flow systems and equipment using artificial intelligence models |
CN113669784B (zh) * | 2021-07-12 | 2022-11-25 | 浙江中广电器集团股份有限公司 | 提升无水地暖机组启动时压缩机缺油的控制方法及三联供*** |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1786606A (zh) * | 2004-12-09 | 2006-06-14 | Lg电子株式会社 | 复式空调的控制方法 |
JP2008139001A (ja) * | 2006-12-05 | 2008-06-19 | Daikin Ind Ltd | 冷凍装置 |
JP4110818B2 (ja) * | 2002-04-09 | 2008-07-02 | ダイキン工業株式会社 | 冷凍装置 |
CN102305439A (zh) * | 2011-06-29 | 2012-01-04 | 宁波奥克斯电气有限公司 | 多联式空调机组 |
CN103486785A (zh) * | 2013-09-18 | 2014-01-01 | Tcl空调器(中山)有限公司 | 变频空调压缩机的回油控制方法及其装置 |
CN203454497U (zh) * | 2013-08-30 | 2014-02-26 | 青岛海信日立空调***有限公司 | 多联机空调控油*** |
CN103925740A (zh) * | 2013-01-11 | 2014-07-16 | 约克(无锡)空调冷冻设备有限公司 | 空气源热泵*** |
US20140331712A1 (en) * | 2011-12-27 | 2014-11-13 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
CN107975978A (zh) * | 2017-11-10 | 2018-05-01 | 广东美的暖通设备有限公司 | 多联机***及其压缩机油量调节方法和调节装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102165351B1 (ko) * | 2014-02-05 | 2020-10-13 | 엘지전자 주식회사 | 히트펌프 시스템 |
CN107218741B (zh) * | 2017-05-11 | 2020-08-18 | 青岛海尔空调电子有限公司 | 一种多联机***回油控制方法 |
CN107939649B (zh) * | 2017-11-10 | 2019-07-26 | 广东美的暖通设备有限公司 | 多联机***及其压缩机油量调节方法和调节装置 |
US11143444B2 (en) * | 2019-01-10 | 2021-10-12 | Heatcraft Refrigeration Products Llc | Cooling system with supplemental oil extraction from refrigerant |
-
2017
- 2017-11-10 CN CN201711107017.7A patent/CN107975978A/zh active Pending
-
2018
- 2018-11-08 US US16/626,883 patent/US11280527B2/en active Active
- 2018-11-08 CA CA3069397A patent/CA3069397A1/en not_active Abandoned
- 2018-11-08 WO PCT/CN2018/114617 patent/WO2019091431A1/zh active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4110818B2 (ja) * | 2002-04-09 | 2008-07-02 | ダイキン工業株式会社 | 冷凍装置 |
CN1786606A (zh) * | 2004-12-09 | 2006-06-14 | Lg电子株式会社 | 复式空调的控制方法 |
JP2008139001A (ja) * | 2006-12-05 | 2008-06-19 | Daikin Ind Ltd | 冷凍装置 |
CN102305439A (zh) * | 2011-06-29 | 2012-01-04 | 宁波奥克斯电气有限公司 | 多联式空调机组 |
US20140331712A1 (en) * | 2011-12-27 | 2014-11-13 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
CN103925740A (zh) * | 2013-01-11 | 2014-07-16 | 约克(无锡)空调冷冻设备有限公司 | 空气源热泵*** |
CN203454497U (zh) * | 2013-08-30 | 2014-02-26 | 青岛海信日立空调***有限公司 | 多联机空调控油*** |
CN103486785A (zh) * | 2013-09-18 | 2014-01-01 | Tcl空调器(中山)有限公司 | 变频空调压缩机的回油控制方法及其装置 |
CN107975978A (zh) * | 2017-11-10 | 2018-05-01 | 广东美的暖通设备有限公司 | 多联机***及其压缩机油量调节方法和调节装置 |
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