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 PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
oil
compressor
unit
line system
adjusting device
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PCT/CN2018/114617
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English (en)
French (fr)
Inventor
王命仁
杨坤
Original Assignee
广东美的暖通设备有限公司
美的集团股份有限公司
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Application filed by 广东美的暖通设备有限公司, 美的集团股份有限公司 filed Critical 广东美的暖通设备有限公司
Priority to US16/626,883 priority Critical patent/US11280527B2/en
Priority to CA3069397A priority patent/CA3069397A1/en
Publication of WO2019091431A1 publication Critical patent/WO2019091431A1/zh

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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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

一种多联机***压缩机油量调节装置和方法，包括以下步骤：（S1）在多联机***的运行过程中，每隔第一预设时间检测压缩机的油量是否不足；（S2）如果压缩机的油量不足，则控制油量调节单元开启第二预设时间后关闭；（S3）获取油量调节单元的累计开启时间，并判断累计开启时间是否超过预设值；（S4）如果累计开启时间超过预设值且持续第三预设时间未检测到压缩机的油量不足，则通过控制开闭单元和油量调节单元以使储油罐进行回油。

Description

多联机***及其压缩机油量调节方法和调节装置
相关申请的交叉引用
本申请基于申请号为201711107017.7，申请日为2017年11月10日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及空调技术领域，特别涉及一种多联机***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以及一种具有该调节装置的多联机***。
背景技术
多联机***的压缩机需要足够的润滑油润滑，如果压缩机油量不足，润滑不够，就会出现压缩机功率上升，运动部件磨损卡死的问题，进而烧毁压缩机。当多联机***的安装环境要求所安装的配管较长或者室内机配比较大时，相比较短配管的多联机***，***的配管和室内机中存留的润滑油就会增多。为了保证压缩机内有足够的润滑油，***需要充注更多的冷冻油。而现场根据安装情况追加压缩机的润滑油可能会出现***进水、润滑油混用、充注量不合适等问题，因此，一般在产品设计阶段就需要将产品设计安装范围内需要用到的最大润滑油追加到室外机中。当***安装环境要求多安装的配管较短时，多余的润滑油将会进入换热器和冷媒连接管里，造成换热器的换热的性能下降和冷媒连接管的压损增加，严重影响***的运行效率。
发明内容
本发明旨在至少从一定程度上解决上述技术中的技术问题之一。为此，本发明的第一个目的在于提出一种多联机***的压缩机油量调节方法，能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
本发明的第二个目的在于提出一种非临时性计算机可读存储介质。
本发明的第三个目的在于提出一种多联机***的压缩机油量调节装置。
本发明的第四个目的在于提出一种多联机***。
为达到上述目的，本发明第一方面实施例提出的一种多联机***的压缩机油量调节方法，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。
根据本发明实施例的多联机***的压缩机油量调节方法，在多联机***的运行过程中，每隔第一预设时间检测压缩机的油量是否不足，如果压缩机的油量不足，则控制油量调节单元开启第二预设时间后关闭，并获取油量调节单元的累计开启时间，以及判断累计开启时间是否超过预设值，如果累计开启时间超过预设值且持续第三预设时间未检测到压缩机的油量不足，则通过控制开闭单元和油量调节单元以使储油罐进行回收油。由此，该方法能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
另外，根据本发明上述实施例提出的多联机***的压缩机油量调节方法还可以具有如下附加的技术特征：
根据本发明的一个实施例，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。
根据本发明的一个实施例，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。
根据本发明的一个实施例，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。
为达到上述目的，本发明第二方面实施例提出了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，该程序被处理器执行时实现上述的多联机***的压缩机油量调节方法。
本发明实施例的非临时性计算机可读存储介质，通过执行上述的多联机***的压缩机油量调节方法，能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
为达到上述目的，本发明第三方面实施例提出了一种多联机***的压缩机油量调节装置，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。
根据本发明实施例的多联机***的压缩机油量调节装置，在多联机***的运行过程中，每隔第一预设时间通过油量检测模块检测压缩机的油量是否不足，如果压缩机的油量不足，控制模块则控制油量调节单元开启第二预设时间后关闭，并通过获取模块获取油量调节单元的累计开启时间，通过判断模块判断累计开启时间是否超过预设值，如果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，控制模块则通过控制开闭单元和油量调节单元以使储油罐进行回收油。由此，该装置能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
另外，根据本发明上述实施例提出的多联机***的压缩机油量调节装置还可以具有如下附加的技术特征：
根据本发明的一个实施例，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。
根据本发明的一个实施例，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。
根据本发明的一个实施例，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。
为达到上述目的，本发明第四方面实施例提出了一种多联机***，其包括上述的多联机***的压缩机油量调节装置。
本发明实施例的多联机***，通过上述的多联机***的压缩机油量调节装置，能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
附图说明
图1是根据本发明一个实施例的多联机***的结构示意图；
图2是根据本发明另一个实施例的多联机***的结构示意图；
图3是根据本发明实施例的多联机***的压缩机油量调节方法的流程图；
图4是根据本发明一个实施例的多联机***的压缩机油量调节方法的流程图；
图5是根据本发明实施例的多联机***的压缩机油量调节装置的方框示意图。
附图标记：
室外机100、多个室内机200、压缩机110、油分离器120、室外换热器130、外机节流阀140、油量调节装置150、开闭单元151、储油罐152、油量调节单元153、第一毛细管C1、第一电磁阀SV1、第二毛细管C2、第二电磁阀SV2、第三电磁阀SV3和四通阀ST。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面结合附图来描述根据本发明实施例提出的多联机***的压缩机油量调节方法、多联机***的压缩机油量调节装置以及具有该调节装置的多联机***。
在本发明的实施例中，如图1和图2所示，多联机***可包括室外机100和多个室内机200，室外机100可包括压缩机110、油分离器120、室外换热器130、外机节流阀140 和油量调节装置150，油量调节装置150与油分离器120并联，且油量调节装置150的第一端连接到压缩机110的排气口，油量调节装置150的第二端通过四通阀ST连接到室外换热器130，油量调节装置150的第三端连接到压缩机110的回气口，油量调节装置150可包括开闭单元151、储油罐152和油量调节单元153。其中，油量调节装置150还可包括油量检测单元(图中未具体示出)，油量检测单元可以为油粘度计，用于检测油温、油位等，以判断压缩机是否缺油。
进一步地，根据本发明的一个实施例，如图1所示，油分离器120的第一端连接到压缩机110的排气口，油分离器120的第二端与油量调节装置150的第二端相连，油分离器120的第三端分别通过第一毛细管C1和第一电磁阀SV1连接到压缩机110的回气口，油量调节单元153可包括串联的第二毛细管C2和第二电磁阀SV2，串联的第二毛细管C2和第二电磁阀SV2连接在压缩机110的回气口与储油罐152的调节口之间，开闭单元151可包括第三电磁阀SV3，第三电磁阀SV3连接在压缩机110的排气口与储油罐152的入口之间，储油罐152的冷媒出口与通过四通阀ST连接到室外换热器130。
具体地，如图1所示，油量调节装置150与油分离器120为并联关系，油量调节装置150的第一端连接压缩机110排气口，第二端连接四通阀ST入口，第三端通过毛细管连接到压缩机110的回气口。油量调节装置150由储油罐152、开闭单元151、油量检测单元(图中未具体示出)和油量调节单元153组成，其中，储油罐152可以对压缩机110排气进行油分离，开闭单元151设置在储油罐152的入口处(如图1所示)或者出口处(如图2所示)，以控制冷媒是否经过储油罐152，油量调节单元153设置在储油罐152和***低压管之间的连接管上，用于对储油罐152内的油量进行调节，油量调节单元153可以由电磁阀、或者串联的电磁阀和毛细管、或者电子膨胀阀等构成。
需要说明的是，储油罐152可以为一个或者多个，油量调节单元153可以由电磁阀、或者串联的电磁阀和毛细管、或者电子膨胀阀构成，开闭单元151可设置在储油罐152的入口处或者出口处，其中，图1和图2所示的结构示意图仅作为本发明的一个实施例。
图3是根据本发明实施例的多联机***的压缩机油量调节方法的流程图。
如图3所示，本发明实施例的多联机***的压缩机油量调节方法可包括以下步骤：
S1，在多联机***的运行过程中，每隔第一预设时间检测压缩机的油量是否不足。其中，第一预设时间可根据实际情况进行标定。可通过油粘度计检测油温、油位等参数，来判断压缩机的油量是否不足。
S2，如果压缩机的油量不足，则控制油量调节单元开启第二预设时间后关闭，其中，第二预设时间可根据实际情况进行标定。
S3，获取油量调节单元的累计开启时间，并判断累计开启时间是否超过预设值，其中， 预设值可根据实际情况进行标定。
S4，如果累计开启时间超过预设值且持续第三预设时间未检测到压缩机的油量不足，则通过控制开闭单元和油量调节单元以使储油罐进行回收油，其中，第三预设时间大于第一预设时间，具体可根据实际情况进行标定。
根据本发明的一个实施例，当开闭单元处于开启状态、油量调节单元处于关闭状态时，储油罐进行回收油。
具体地，多联机***正常运行时，储油罐进出口的开闭单元处于关闭状态，同时油量调节单元也处于关闭状态。在多联机***运行的过程中，每隔第一预设时间t1，通过油量检测单元检测压缩机的油量，当检测到压缩机的油量不足时，开启油量调节单元，并在开启第二预设时间t2后，关闭油量调节单元，同时累计油量调节单元开启的时间，累计后的油量调节单元开启时间A＝A+t2。当油量调节单元累计开启时间超过预设值B、且持续第三预设时间t3内未检测到压缩机的油量不足时，控制开闭单元处于开启状态，油量调节单元处于关闭状态，以使储油罐进行回收油。从而能够防止压缩机内的油量不足，润滑不够，使得压缩机功率上升，造成运行部件磨损卡死，进而烧毁压缩机，并在未检测到压缩机的油量不足时，进行回收油，以将***中多余的油量存储在储油罐中。
进一步地，根据本发明的一个实施例，当储油罐进行回收油时，如果检测到压缩机的油量不足或者储油罐进行回收油的持续时间达到第四预设时间，则控制开闭单元关闭，并保持油量调节单元处于关闭状态。
也就是说，在储油罐进行回收油时，如果压缩机的油量不足，或者持续时间达到第四预设时间t4，则多联机***退出回收油运行，并根据压缩机的油量判断是否回收油过多，此时，开闭单元关闭，油量调节单元处于关闭状态，停止回收油，并将油量调节单元累计开启时间清零。如果在回收油过程中检测到压缩机油量不足，则多联机***立即退出回收油运行，进入上述油量调节过程，即控制油量调节单元开启，在开启t2时间后关闭，并累计计时油量调节单元的开启时间。
由上可知，通过在多联机***上增加一个油量调节装置，能够根据***的安装特性对***的存油量进行控制，保证***的运行效率。
为使本领域人员更加了解本发明，图4是根据本发明一个实施例的多联机***的压缩机油量调节方法的流程图。如图4所示，该多联机***的压缩机油量调节方法可包括以下步骤：
S101，多联机***正常运行。
S102，开关单元处于关闭状态，油量调节单元处于关闭状态。
S103，每隔第一预设时间t1，检测压缩机的油量。
S104，判断压缩机的油量是否不足。如果是，执行步骤S105；如果否，返回步骤S103。
S105，控制油量调节单元开启，并在第二预设时间t2后关闭。
S106，获取油量调节单元的累计开启时间A。
S107，判断累计开启时间是否超过预设值B、且持续第三预设时间t3未检测到压缩机的油量不足。如果是，执行步骤S108；如果否，返回步骤S105。
S108，控制开闭单元开启，油量调节单元关闭，储油罐进行回收油。
S109，判断压缩机的油量不足或者储油罐进行回收油的持续时间达到第四预设时间t4是否成立。如果是，返回步骤S101；如果否，返回步骤S108。
综上所述，根据本发明实施例的多联机***的压缩机油量调节方法，在多联机***的运行过程中，每隔第一预设时间检测压缩机的油量是否不足，如果压缩机的油量不足，则控制油量调节单元开启第二预设时间后关闭，并获取油量调节单元的累计开启时间，以及判断累计开启时间是否超过预设值，如果累计开启时间超过预设值且持续第三预设时间未检测到压缩机的油量不足，则通过控制开闭单元和油量调节单元以使储油罐进行回收油。由此，该方法能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
图5是根据本发明实施例的多联机***的压缩机油量调节装置的方框示意图。
在本发明的是实施例中，如图1和2所示，多联机***可包括室外机100和多个室内机200，室外机100可包括压缩机110、油分离器120、室外换热器130、外机节流阀140和油量调节装置150，油量调节装置150与油分离器120并联，且油量调节装置150的第一端连接到压缩机110的排气口，油量调节装置150的第二端通过四通阀ST连接到室外换热器130，油量调节装置150的第三端连接到压缩机110的回气口，油量调节装置150可包括开闭单元151、储油罐152和油量调节单元153。
如图5所示，本发明实施例的多联机***的压缩机油量调节装置可包括：油量检测模块10、控制模块20、获取模块30和判断模块40。其中，油量检测模块10用于在多联机***的运行过程中，每隔第一预设时间检测压缩机110的油量是否不足。控制模块20用于在压缩机110的油量不足时，控制油量调节单元153开启第二预设时间后关闭。获取模块30用于获取油量调节单元153的累计开启时间。判断模块40用于判断累计开启时间是否超过预设值。控制模块20还用于，在累计开启时间超过预设值且持续第三预设时间未检测到压缩机110的油量不足时，通过控制开闭单元151和油量调节单元153以使储油罐152进行回收油，其中，第三预设时间大于第一预设时间。
根据本发明的一个实施例，当开闭单元151处于开启状态、油量调节单元153处于关闭状态时，储油罐152进行回收油。
根据本发明的一个实施例，控制模块20还用于，当储油罐152进行回收油时，如果检测到压缩机110的油量不足或者储油罐152进行回收油的持续时间达到第四预设时间，则控制开闭单元151关闭，并保持油量调节单元153处于关闭状态。
根据本发明的一个实施例，如图1所示，油分离器120的第一端连接到压缩机110的排气口，油分离器120的第二端与油量调节装置150的第二端相连，油分离器120的第三端分别通过第一毛细管C1和第一电磁阀SV1连接到压缩机110的回气口，油量调节单元153可包括串联的第二毛细管C2和第二电磁阀SV2，串联的第二毛细管C2和第二电磁阀SV2连接在压缩机110的回气口与储油罐152的调节口之间，开闭单元151可包括第三电磁阀SV3，第三电磁阀SV3连接在压缩机110的排气口与储油罐152的入口之间，储油罐152的冷媒出口与通过四通阀ST连接到室外换热器130。
需要说明的是，本发明实施例的多联机***的压缩机油量调节装置中未披露的细节，请参照本发明实施例的多联机***的压缩机油量调节方法中所披露的细节，具体这里不再赘述。
根据本发明实施例的多联机***的压缩机油量调节装置，在多联机***的运行过程中，每隔第一预设时间通过油量检测模块检测压缩机的油量是否不足，如果压缩机的油量不足，控制模块则控制油量调节单元开启第二预设时间后关闭，并通过获取模块获取油量调节单元的累计开启时间，通过判断模块判断累计开启时间是否超过预设值，如果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，控制模块则通过控制开闭单元和油量调节单元以使储油罐进行回收油。由此，该装置能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
另外，本发明的实施例还提出了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，该程序被处理器执行时实现上述的多联机***的压缩机油量调节方法。
本发明实施例的非临时性计算机可读存储介质，通过执行上述的多联机***的压缩机油量调节方法，能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
此外，本发明的实施例还提出了一种多联机***，其包括上述的多联机***的压缩机油量调节装置。
本发明实施例的多联机***，通过上述的多联机***的压缩机油量调节装置，能够在检测到压缩机的油量不足时，通过对开闭单元和油量调节单元进行控制，以对***的存油量进行调节，保证***的运行效率。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示 例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所属技术领域的技术人员所理解。
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行***、装置或设备(如基于计算机的***、包括处理器的***或其他可以从指令执行***、装置或设备取指令并执行指令的***)使用，或结合这些指令执行***、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行***、装置或设备或结合这些指令执行***、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行***执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离 散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。
此外，在本发明各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 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。
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. 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。
  9. 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。
  10. 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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