CN105352064B - Outdoor unit, multi-joint outdoor machine system, multi-variable air conditioning unit and its oily control method - Google Patents
Outdoor unit, multi-joint outdoor machine system, multi-variable air conditioning unit and its oily control method Download PDFInfo
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- CN105352064B CN105352064B CN201410410324.2A CN201410410324A CN105352064B CN 105352064 B CN105352064 B CN 105352064B CN 201410410324 A CN201410410324 A CN 201410410324A CN 105352064 B CN105352064 B CN 105352064B
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Abstract
The present invention proposes a kind of outdoor unit, outdoor machine system, multi-variable air conditioning unit and its oily control method.The outdoor unit includes: variable conpacitance compressor；Constant volume capacity compressor；Oil eliminator；Four-way valve；Outdoor heat exchanger；Gas-liquid separator；First equal oil inlet pipe；Second equal oil inlet pipe.Air-conditioner outdoor unit according to an embodiment of the present invention may be implemented that compressor chamber is oily, and when air-conditioner outdoor unit according to an embodiment of the present invention is used as the functional module of multi-connected machine, can also pass through equal oil inlet pipe and realize equal oil between functional module.
Description
Technical field
The present invention relates to a kind of outdoor unit, multi-joint outdoor machine system, multi-variable air conditioning unit and its oily control methods.
Background technique
Multi-online air-conditioning system is made of several air-conditioning equipments, can be realized the freedom of more outdoor units and more indoor units
Combination.The capacity of a set of multi-line system usually has ten even tens or more, and system can be by same or different capacity
Wired in parallel, inside modules also have multiple compressors.The working order of compressor is not also identical when load difference, in system
The presumable high loaded process of compressor, some low load operations, and some possibility are inoperative.Easily occur in this case
Oily distribution is uneven between modules, and some module inner compressors may lubricate shortage of oil, and some module inner compressors may
Lubricating oil is excessive, and the module for lacking lubricating oil easily causes the damage of compressor.
For low-pressure cavity compressor, when compressor in parallel exports imbalance, the pressure inside compressor is not also identical,
Oil can be deviated from the high compressor of pressure toward the low compressor of pressure, if the oil inside compressor is lower than Safe Levels, by pole
Easily cause the damage of compressor.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of outdoor units that compressor chamber oil may be implemented.
Another object of the present invention is to propose a kind of outdoor machine system.
Another object of the present invention is to propose a kind of multi-variable air conditioning unit.
Another object of the present invention is to propose a kind of equal oily control method of multi-variable air conditioning unit.
Outdoor unit according to an embodiment of the present invention, comprising: compressor, the compressor include variable conpacitance compressor and constant volume
Capacity compressor, the variable conpacitance compressor have the first air inlet, first row port and the first equal hydraulic fluid port, the constant volume compression
Machine has the second air inlet, second exhaust port and the second equal hydraulic fluid port, and the second equal hydraulic fluid port and the described first equal hydraulic fluid port pass through edge
The first check valve and in parallel with first check valve be connected from the described second equal hydraulic fluid port to the direction of the described first equal hydraulic fluid port
Bypass throttle part be connected；First oil eliminator, first oil eliminator have first entrance, first outlet and the first oil return
Mouthful, the first entrance of first oil eliminator is connected by second one-way valve with the first row port, first oil
It is connected from the first oil return opening of device with the second air inlet of the constant volume capacity compressor, the second one-way valve is along from described first
Exhaust outlet to first oil eliminator first entrance direction be connected；Second oil eliminator, the second oil eliminator tool
There are second entrance, second outlet and the second oil return opening, the second entrance of second oil eliminator passes through third check valve and institute
It states second exhaust port to be connected, the second air inlet phase of the second oil return opening of second oil eliminator and the constant volume capacity compressor
Even, the third check valve is connected along from the second exhaust port to the direction of the second entrance of second oil eliminator；Four
Port valve, the four-way valve have the first valve port, the second valve port, third valve port and the 4th valve port, first valve port and described the
One outlet is connected with the second outlet, and the third valve port is connected with the first indoor unit connecting tube；Outdoor heat exchanger, the room
External heat exchanger has first port and second port, and the first port is connected with second valve port；Gas-liquid separator, it is described
There is gas-liquid separator gas-liquid separator import and gas-liquid separator to export, the gas-liquid separator import and the 4th valve port
Be connected, gas-liquid separator outlet respectively with the first air inlet of the variable conpacitance compressor, the constant volume capacity compressor
Second air inlet, first oil eliminator the first oil return opening be connected with the second oil return opening of second oil eliminator；?
Oil inlet pipe, the equal oil inlet pipe have a first end and a second end, the first end of the equal oil inlet pipe and the described first equal hydraulic fluid port phase
Even, the equal oil inlet pipe is equipped with equal solenoid, and the second end of the equal oil inlet pipe is suitable for the equal oil with another outdoor unit
The second end of branch pipe is in parallel.
Equal oil between variable conpacitance compressor and constant volume capacity compressor may be implemented in outdoor unit according to an embodiment of the present invention,
And when outdoor unit according to an embodiment of the present invention be used as multi-gang air-conditioner unit functional module when, may be implemented functional module it
Between equal oil.
In some embodiments, the bypass throttle part is bypass capillary.
In some embodiments, first oil return opening pass through the first oily throttling element and the constant volume capacity compressor the
Two air inlets are connected, the second air inlet phase that second oil return opening passes through the second oily throttling element and the constant volume capacity compressor
Even.
In some embodiments, the described first oily throttling element and the described second oily throttling element are oily capillary.
In some embodiments, the second end of the equal oil inlet pipe is equipped with the first shut-off valve, and first indoor unit connects
The free end of adapter tube is equipped with the second shut-off valve, and the second port of the outdoor heat exchanger is connected with the second indoor unit connecting tube,
The free end of the second indoor unit connecting tube is equipped with third shut-off valve.
In some embodiments, first valve port passes through the first outlet of the 4th check valve and first oil eliminator
It is connected with the second outlet of second oil eliminator, the 4th check valve is along from the first outlet and the second outlet
It is connected to the direction of first valve port.
In some embodiments, the described first equal hydraulic fluid port and the described second equal hydraulic fluid port are respectively provided at the variable conpacitance compressor
With the top of the minimum safe operation oil level of the constant volume capacity compressor.
Multi-joint outdoor machine system according to an embodiment of the present invention, comprising: multiple outdoor units, the outdoor unit are any one of upper
The second port of the outdoor unit, the outdoor heat exchanger of the plurality of outdoor unit is connected in parallel to each other, multiple outdoor units
The free end of the first indoor unit connecting tube be connected in parallel to each other, and the second end of the equal oil inlet pipe of multiple outdoor units is each other simultaneously
Connection.
Multi-variable air conditioning unit according to an embodiment of the present invention, including above-mentioned multi-joint outdoor machine system.
The equal oily control method of multi-variable air conditioning unit according to an embodiment of the present invention, comprising: step S1): operation is described more
Whole outdoor units of the multi-joint outdoor machine system of air-conditioner group and the equal solenoid for closing whole outdoor units, until the past the
One predetermined time；Step S2): open the equal solenoid of whole outdoor units, continue to run an outdoor unit and it is out of service its
Remaining outdoor unit, until one the second predetermined time of past；Step S3): run another outdoor unit and remaining outdoor out of service
Machine, until another second predetermined time in past；Step S4): repeat step S3), until the equal electromagnetic oil in whole outdoor units
Each outdoor unit has been run under valve is in the open state so that between the compressor of the multiple outdoor unit oil and make
It is oily between the variable conpacitance compressor and constant volume capacity compressor of each outdoor unit.
In some embodiments, it is spaced the third predetermined time after step S4), repeats step S1)-step S4).
Preferably, before step S1), a part of compressor of the multi-joint outdoor machine system is run, and described one
Partial shrinkage machine executes step S1 after running for the 4th predetermined time).
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the schematic diagram of outdoor unit according to an embodiment of the present invention.
Fig. 2 is multi-joint outdoor machine system according to an embodiment of the present invention.
Fig. 3 is the schematic diagram of multi-variable air conditioning unit according to an embodiment of the present invention.
Fig. 4 is the flow chart of the equal oily control method of multi-variable air conditioning unit according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Outdoor unit according to an embodiment of the present invention is described in detail referring to attached drawing.
As shown in Figure 1, outdoor unit according to an embodiment of the present invention includes: compressor, the first oil eliminator 31, the second oil
From device 32, four-way valve 40, outdoor heat exchanger 50, gas-liquid separator 60, equal oil inlet pipe 70.
The compressor includes variable conpacitance compressor 10 and constant volume capacity compressor 20.Variable conpacitance compressor 10 have first into
Port 101, first row port 102 and the first equal hydraulic fluid port 103.Constant volume capacity compressor 20 has the second air inlet 201, second exhaust
Mouth 202 and the second equal hydraulic fluid port 203.Second equal hydraulic fluid port 203 and the first equal hydraulic fluid port 103 by the first check valve 801 and with it is first single
The bypass throttle part 90 in parallel to valve 801 is connected.It is possible thereby to realize between constant volume capacity compressor 20 and variable conpacitance compressor 10
Equal oil.First check valve 801 is connected along from the direction of the second equal hydraulic fluid port 103 of equal hydraulic fluid port 203 to the first.
First oil eliminator 31 has first entrance 311, first outlet 312 and the first oil return opening 313.First oil eliminator
31 first entrance 311 is connected by second one-way valve 802 with first row port 102, the first oil return of the first oil eliminator 31
Mouth 313 is connected with the second air inlet 201 of constant volume capacity compressor 20.Second one-way valve 802 is along from first row port 102 to the first
The direction of entrance 311 is connected.
Second oil eliminator 32 has second entrance 321, second outlet 322 and the second oil return opening 323.Second oil eliminator
32 second entrance 321 is connected by third check valve 803 with second exhaust port 202, the second oil return of the second oil eliminator 32
Mouth 323 is connected with the second air inlet 201 of constant volume capacity compressor 20.Third check valve 803 is along from second exhaust port 202 to the second
The direction of entrance 321 is connected.
Four-way valve 40 has the first valve port 401, the second valve port 402, third valve port 403 and the 4th valve port 404.First valve port
401 are connected with first outlet 312 and second outlet 322, and third valve port 403 is connected with the first indoor unit connecting tube 111.Favorably
Ground, the first valve port 401 and first state the first outlet 312 of oil eliminator 31 and second outlet 322 that second states oil eliminator 32
It is connected by the 4th check valve 804, the 4th check valve 804 is along from first outlet 312 and the 322 to the first valve port of second outlet 401
Direction conducting, in other words, first outlet 312 and second outlet 322 are parallel to the import of the 4th check valve 804 by connecting tube
Side, the outlet side of the 4th check valve 804 are connected with the first valve port 401.
Outdoor heat exchanger 50 has first port 501 and second port 502.First port 501 and 402 phase of the second valve port
Even.
Gas-liquid separator 60 has gas-liquid separator import 601 and gas-liquid separator outlet 602.Gas-liquid separator import
601 are connected with the 4th valve port 404.Gas-liquid separator outlet 602 respectively with the first air inlet 101 of variable conpacitance compressor 10, fixed
The of second air inlet 201 of capacity compressor 20, the first oil return opening 313 of the first oil eliminator 31 and the second oil eliminator 32
Two oil return openings 323 are connected.In a specific example, as shown in Figure 1, gas-liquid separator outlet 602 passes through connecting tube and second
Air inlet 201 is connected, and first outlet 312 and second outlet 322 are connected by two connecting tubes with the second air inlet 201, above-mentioned
It is connected after three connecting tubes are in parallel with the second air inlet 201.
Equal oil inlet pipe 70 has a first end and a second end.The first end and the first equal hydraulic fluid port 103 and second of equal oil inlet pipe 70
Equal hydraulic fluid port 203 is connected, and equal oil inlet pipe 70 is equipped with equal solenoid 71.
Outdoor unit according to an embodiment of the present invention, by by the first of variable conpacitance compressor 10 the equal hydraulic fluid port 103 and constant volume
The equal hydraulic fluid port 203 of the second of compressor 20 is connected, and the equal oil between variable conpacitance compressor 10 and constant volume capacity compressor 20 may be implemented.
Moreover, oil branch can also be passed through when outdoor unit according to an embodiment of the present invention is used as the functional module of multi-variable air conditioning unit
Pipe realizes the equal oil between functional module.
The outdoor unit A of specific embodiment according to the present invention is described below with reference to Fig. 1.
As shown in Figure 1, in some embodiments of the invention, outdoor unit A includes variable conpacitance compressor 10 and constant volume pressure
Contracting machine 20, the first oil eliminator 31, the second oil eliminator 32, four-way valve 40, outdoor heat exchanger 50, gas-liquid separator 60, oil
Branch pipe 70.
Variable conpacitance compressor 10 has the first air inlet 101, first row port 102 and the first equal hydraulic fluid port 103.Varying capacity pressure
Contracting machine 10 is equipped with feather valve 104, and one end of feather valve 104 is connected to the first import 101 of variable conpacitance compressor 10, feather valve
104 second end is connected to the inner cavity of variable conpacitance compressor 10.
Constant volume capacity compressor 20 has the second air inlet 201, second exhaust port 202 and the second equal hydraulic fluid port 203.Second is oily
Mouth 203 is connected to the first equal hydraulic fluid port 103, and edge is equipped between the first equal hydraulic fluid port 103 and the second equal hydraulic fluid port 203 from the second equal hydraulic fluid port
First check valve 801 of the direction conducting of the 203 to the first equal hydraulic fluid port 103,801 parallel connection one of the first check valve bypass throttling element 90,
Bypass throttle part 90 is, for example, bypass capillary
Preferably, the first equal hydraulic fluid port 103 is located at the top of the minimum safe operation oil level of variable conpacitance compressor 10, and second
Hydraulic fluid port 203 is located at the top of the minimum safe operation oil level of constant volume capacity compressor 20.In other words, the position of equal hydraulic fluid port is by compressor
Oil level is safely operated to determine, it is generally higher than compressor minimum safe operation oil level.Using the copper pipe of suitable caliber by varying capacity pressure
Contracting machine is connected with the equal hydraulic fluid port of constant volume capacity compressor, to realize the equal oil between variable conpacitance compressor and constant volume capacity compressor.
First oil eliminator 31 has first entrance 311, first outlet 312 and the first oil return opening 313.First oil eliminator
31 first entrance 311 is connected by second one-way valve 802 with first row port 102, the first oil return of the first oil eliminator 31
Mouth 313 is connected with the second air inlet 201 of constant volume capacity compressor 20.The first oil return opening 313 and constant volume of first oil eliminator 31
The first oily throttling element 1001 is equipped between second air inlet 201 of capacity compressor 20.Second one-way valve 802 is along from first exhaust
Mouth 102 is connected to the directions of first entrance 311.
Second oil eliminator 32 has second entrance 321, second outlet 322 and the second oil return opening 323.Second oil eliminator
32 second entrance 321 is connected by third check valve 803 with second exhaust port 202, the second oil return of the second oil eliminator 32
Mouth 323 is connected with the second air inlet 201 of constant volume capacity compressor 20.The second oil return opening 323 and constant volume of second oil eliminator 32
The second oily throttling element 1002 is equipped between second air inlet 201 of capacity compressor 20.Third check valve 803 is along from second exhaust
Mouth 202 is connected to the directions of second entrance 321.
In one example, the first oily throttling element 1001 and the second oily throttling element 1002 can be oily capillary.
Four-way valve 40 has the first valve port 401, the second valve port 402, third valve port 403 and the 4th valve port 404.First valve port
401 are connected with first outlet 312 and second outlet 322, and third valve port 403 is connected with the first indoor unit connecting tube 111.It is preferred that
Ground, the first valve port 401 pass through the first outlet 312 and the second oil eliminator 32 of the 4th check valve 804 and the first oil eliminator 31
Second outlet 322 connect.4th check valve 804 is along the side from first outlet 312 and the 322 to the first valve port of second outlet 401
To conducting.
Outdoor heat exchanger 50 has first port 501 and second port 502.First port 501 and 402 phase of the second valve port
Even.Outdoor heat exchanger 50 can be condenser.
Gas-liquid separator 60 has gas-liquid separator import 601 and gas-liquid separator outlet 602.Gas-liquid separator import
601 are connected with the 4th valve port 404.Gas-liquid separator outlet 602 respectively with the first air inlet 101 of variable conpacitance compressor 10, fixed
The of second air inlet 201 of capacity compressor 20, the first oil return opening 313 of the first oil eliminator 31 and the second oil eliminator 32
Two oil return openings 323 are connected.
Equal oil inlet pipe 70 has a first end and a second end.The first end and the first equal hydraulic fluid port 103 and second of equal oil inlet pipe 70
Equal hydraulic fluid port 203 is connected, and equal oil inlet pipe 70 is equipped with equal solenoid 71.
Preferably, the second end of equal oil inlet pipe 70 is equipped with the first shut-off valve 121.First indoor unit connecting tube 111 from
Second shut-off valve 122 is equipped with by end, the second port 502 of outdoor heat exchanger 50 is connected with the second indoor unit connecting tube 112, the
The free end of two indoor unit connecting tubes 112 is equipped with third shut-off valve 123.As a result, convenient for connection air conditioner indoor unit, and being convenient for will
The equal oil inlet pipe 70 of multiple indoor unit A is connected.
Outdoor unit according to an embodiment of the present invention, variable conpacitance compressor 10 are equipped with the first equal hydraulic fluid port 103, constant volume capacity compressor
20 are equipped with the second equal hydraulic fluid port 203, and the position of the first equal hydraulic fluid port 103 is determined by the safe operation oil level of variable conpacitance compressor, and second
The position of equal hydraulic fluid port 203 determines by the safe operation oil level of constant volume capacity compressor, generally the minimum safe than corresponding compressor
It is high to run oil level.Be arranged between the first equal hydraulic fluid port 103 and the second equal hydraulic fluid port 203 first check valve 801 and with the first check valve
801 bypass throttle parts 90 in parallel, the conducting direction of the first check valve 801 are by the second equal hydraulic fluid port 203 towards the first equal hydraulic fluid port
103, a threeway is connected in 801 exit of the first check valve, the first end of threeway is connected to the first equal hydraulic fluid port 103, and the other end is logical
It crosses copper pipe and connects equal solenoid 71, the second end of equal solenoid 71 is connected to the first shut-off valve 121 by copper pipe, threeway
Third end is connected with one end of the outlet of the first check valve 801 and bypass throttle part 90.
Moreover, when air-conditioner outdoor unit according to an embodiment of the present invention is used for the functional module of multi-gang air-conditioner unit, it can
The first shut-off valve 121 of functional module to be connected, the above-mentioned pipeline of each functional module is set to be in connected state, and according to function
Energy module operating status and runing time control the unlatching of the equal solenoid 71 of each functional module, and then realize functional module
Between equal oil, thus expand the applicability of outdoor unit according to an embodiment of the present invention.
Multi-joint outdoor machine system according to an embodiment of the present invention is described below with reference to Fig. 2.As shown in Fig. 2, according to the present invention
The multi-joint outdoor machine system of embodiment includes multiple outdoor units.The outdoor unit the above embodiment of the present invention can describe according to
Outdoor unit A.Three outdoor units are shown in FIG. 2, for the ease of distinguishing, three outdoor units are respectively labeled as outdoor unit A1,
Outdoor unit A2 and outdoor unit A3.The second port of the outdoor heat exchanger of outdoor unit A1, outdoor unit A2 and outdoor unit A3 is connected in parallel to each other,
The free end of the first indoor unit connecting tube of outdoor unit A1, outdoor unit A2 and outdoor unit A3 is connected in parallel to each other, and outdoor unit A1, outdoor
The second end of the equal oil inlet pipe of machine A2 and outdoor unit A3 is connected in parallel to each other.
It is understood that multi-joint outdoor machine system of the invention is not limited to three outdoor units, it can be according to specific need
Any appropriate number of outdoor unit is set.
For the multi-joint outdoor machine system being formed in parallel by multiple outdoor units (i.e. functional module), in different interiors
Under load condition, the operating status of each functional module in parallel multi-joint outdoor machine system may be it is different, have
The output of functional module high load capacity, some functional module underload output, some functional modules are even inoperative.Thus cause to exist
Return-air amount between functional module is inconsistent, and the distribution that also will lead to the lubricating oil between functional module is uneven: partial function mould
Block compressor lubricant oil is more, and partial function module compressor lubricant oil is few.
The first row port 102 of multi-joint outdoor machine system according to the present invention, variable conpacitance compressor 10 connects the first oil
From device 31, the second exhaust port 202 of constant volume capacity compressor 20 connects the second oil eliminator 32.In operational process, in compressor
Compressor can be discharged with refrigerant in oil, separate in the first oil eliminator 31 and the second oil eliminator 32 and be respectively deposited at the
The lower part of one oil eliminator 31 and the second oil eliminator 32, then it is oily from the first oil return opening 313 and second of the first oil eliminator 31
Second oil return opening 323 of separator 32 returns to constant volume by the first oily throttling element 1001 and the second oily throttling element 1002 respectively
Capacity compressor 20.Meanwhile variable conpacitance compressor 10 is equipped with the first equal hydraulic fluid port 103, constant volume capacity compressor 20 is equipped with the second equal hydraulic fluid port
203, the position of the first equal hydraulic fluid port 103 is determined by the safe operation oil level of variable conpacitance compressor, the position of the second equal hydraulic fluid port 203 by
The safe operation oil level of constant volume capacity compressor determines, generally higher than the minimum safe of corresponding compressor operation oil level.First
First check valve 801 and bypass throttle part 90 in parallel therewith are set between equal hydraulic fluid port 103 and the second equal hydraulic fluid port 203, and first is single
It is by the second equal hydraulic fluid port 203 towards the first equal hydraulic fluid port 103 to the conducting direction of valve 801, exports and bypass in the first check valve 801
One end of throttling element 90 connects a threeway, and threeway first end is connected to the first equal hydraulic fluid port 103, and second end connects oil by copper pipe
The other end of solenoid valve 71, equal solenoid 71 is connected to the first shut-off valve 121 by copper pipe.Due in same functional module
Variable conpacitance compressor 10 is connected to by the first check valve 801 with bypass throttle part 90 with constant volume capacity compressor 20, and which achieves function
Equal oil between the variable conpacitance compressor 10 and constant volume capacity compressor 20 of energy inside modules.
Multi-variable air conditioning unit according to an embodiment of the present invention is described below with reference to Fig. 3.As shown in figure 3, real according to the present invention
The multi-variable air conditioning unit for applying example includes above-mentioned multi-joint outdoor machine system and indoor set system.Multi-joint outdoor unit system is shown in Fig. 3
System includes three outdoor unit A1-A3, and indoor set system includes three indoor unit N1-N3, and still, the present invention is not limited thereto.
Multi-variable air conditioning unit according to an embodiment of the present invention, in operation, each outdoor unit of multi-joint outdoor machine system
Oil can be realized by the be connected with each other first equal hydraulic fluid port and the second oil between variable conpacitance compressor and constant volume capacity compressor.
Moreover, may be implemented between multiple outdoor units by the way that the equal oil inlet pipe of the outdoor unit A1-A3 of multi-joint outdoor machine system is connected
Oil, guarantees that each outdoor unit has suitable lubricating oil, to guarantee the reliability of entire multi-variable air conditioning unit.
The equal oily control method of multi-variable air conditioning unit according to an embodiment of the present invention is described below with reference to Fig. 4.
As shown in figure 4, the equal oily control method of multi-variable air conditioning unit according to an embodiment of the present invention includes:
Step S1): it runs whole outdoor units of the multi-joint outdoor machine system of the multi-variable air conditioning unit and closes whole rooms
The equal solenoid of outer machine, until the first predetermined time of past.
Step S2): the equal solenoid of whole outdoor units is opened, an outdoor unit and remaining room out of service are continued to run
Outer machine, until one the second predetermined time of past.
Step S3): another outdoor unit and remaining outdoor unit out of service are run, until another second pre- timing of past
Between.
Step S4): repeat step S3), until the lower operation in the open state of the equal solenoid in whole outdoor units
Each outdoor unit so that between the compressor of the multiple outdoor unit oil and compress the varying capacity of each indoor unit
It is oily between machine and constant volume capacity compressor.
The equal oily control method of some preferred embodiments according to the present invention, the multi-variable air conditioning unit includes following step
It is rapid:
Step S1): it runs whole outdoor units of the multi-joint outdoor machine system of the multi-variable air conditioning unit and closes whole rooms
The equal solenoid of outer machine, until the first predetermined time of past.
Step S2): the equal solenoid of whole outdoor units is opened, an outdoor unit and remaining room out of service are continued to run
Outer machine, until one the second predetermined time of past.
Step S3): another outdoor unit and remaining outdoor unit out of service are run, until another second pre- timing of past
Between.
Step S4): repeat step S3), until the lower operation in the open state of the equal solenoid in whole outdoor units
Each outdoor unit so that between the compressor of the multiple outdoor unit oil and compress the varying capacity of each outdoor unit
It is oily between machine and constant volume capacity compressor.
It is spaced the third predetermined time after step S4), repeats step S1)-step S4).
Preferably, before step S1), a part of compressor of the multi-joint outdoor machine system is run, and described one
Partial shrinkage machine executes step S1 after running for the 4th predetermined time).
In other words, the equal oily control method of multi-variable air conditioning unit according to an embodiment of the present invention, variable conpacitance compressor 10
First row port 102 connects the first oil eliminator 31, and the second exhaust port 202 of constant volume capacity compressor 20 connects the second oil eliminator
32.In operational process, compressor can be discharged with refrigerant in the oil in compressor, in the first oil eliminator 31 and the second oil eliminator
Separate the lower part for being respectively deposited at the first oil eliminator 31 and the second oil eliminator 32 in 32, then from the first oil eliminator 31
The first oil return opening 313 and the second oil return opening 323 of the second oil eliminator 32 pass through the first oily throttling element 1001 and the respectively
Two oily throttling elements 1002 return to constant volume capacity compressor 20.Meanwhile variable conpacitance compressor 10 is equipped with the first equal hydraulic fluid port 103, constant volume
Capacity compressor 20 is equipped with the second equal hydraulic fluid port 203, and the position of the first equal hydraulic fluid port 103 is true by the safe operation oil level of variable conpacitance compressor
Fixed, the position of the second equal hydraulic fluid port 203 is determined by the safe operation oil level of constant volume capacity compressor, generally most than corresponding compressor
It is high that lower security runs oil level.First check valve 801 and bypass tool are set between the first equal hydraulic fluid port 103 and the second equal hydraulic fluid port 203
Part 90 is flowed, the conducting direction of the first check valve 801 is by the second equal hydraulic fluid port 203 towards the first equal hydraulic fluid port 103, in the first check valve
801 outlets connect a threeway with one end of bypass throttle part 90, and the first end of threeway is connected to the first equal hydraulic fluid port 103, second end
Equal solenoid 71 is connected by copper pipe, the other end of equal solenoid 71 is connected to the first shut-off valve 121 by copper pipe.Due to
Variable conpacitance compressor 10 and constant volume capacity compressor 20 in same functional module are connected by the first check valve 801 and bypass throttle part 90
Logical, which achieves variable conpacitance compressors 10 inside functional module and the equal oil between constant volume capacity compressor 20.
It as a result, at runtime, can be by each other between the variable conpacitance compressor of each outdoor unit and constant volume capacity compressor
The equal hydraulic fluid port of the first equal hydraulic fluid port and second of connection realizes oil.
Moreover, can realize oil by the equal oil inlet pipe being connected in parallel to each other between multiple outdoor units.
More specifically, equal oily control method according to an embodiment of the present invention, the first row port of variable conpacitance compressor 10
102 the first oil eliminators 31 of connection, the second exhaust port 202 of constant volume capacity compressor 20 connect the second oil eliminator 32.It ran
Cheng Zhong, the oil in compressor can be discharged compressor with refrigerant, separate in the first oil eliminator 31 and the second oil eliminator 32
It is respectively deposited at the lower part of the first oil eliminator 31 and the second oil eliminator 32, then first time from the first oil eliminator 31 out
Second oil return opening 323 of hydraulic fluid port 313 and the second oil eliminator 32 passes through the first oily throttling element 1001 and the second oily section respectively
Stream part 1002 returns to constant volume capacity compressor 20.Meanwhile variable conpacitance compressor 10 is equipped with the first equal hydraulic fluid port 103, constant volume capacity compressor
20 are equipped with the second equal hydraulic fluid port 203, and the position of the first equal hydraulic fluid port 103 is determined by the safe operation oil level of variable conpacitance compressor, and second
The position of equal hydraulic fluid port 203 determines by the safe operation oil level of constant volume capacity compressor, generally the minimum safe than corresponding compressor
It is high to run oil level.First check valve 801 and bypass throttle part 90 are set between the first equal hydraulic fluid port 103 and the second equal hydraulic fluid port 203,
The conducting direction of first check valve 801 is by the second equal hydraulic fluid port 203 towards the first equal hydraulic fluid port 103, in going out for the first check valve 801
Mouth connects a threeway with one end of bypass throttle part 90, and the first end of threeway is connected to the first equal hydraulic fluid port 103, and second end passes through copper
Pipe connects equal solenoid 71, and the other end of equal solenoid 71 is connected to the first shut-off valve 121 by copper pipe.Due to same function
Variable conpacitance compressor 10 and constant volume capacity compressor 20 in energy module is by the first check valve 801, first 1001 and of oily throttling element
Second oily throttling element 1002 is connected to, which achieves variable conpacitance compressor 10 inside functional module and constant volume capacity compressor 20 it
Between equal oil.
In short, the equal oily control method of multi-variable air conditioning unit according to an embodiment of the present invention, enter oily mode it
Before, outdoor unit in multi-variable air conditioning unit can be run with one, remaining outdoor unit is shut down, can also a part of outdoor unit operation,
Remaining outdoor unit is shut down, can also whole outdoor units run.
Before equal oily mode, the no matter several outdoor unit booting operations of multi-variable air conditioning unit, after entering oily mode, fortune
Row whole one predetermined time of outdoor unit, then each outdoor unit of in turn isolated operation, oily to carry out.
For example, a multi-gang air-conditioner unit is formed in parallel by three functional modules A1, A2 and A3, when unit is in function
Modules A 1, A2 and A3 is mono- when opening, i.e. a functional module operation might as well assume that this functional module is A2, writing function modules A 2
The Cumulative Elapsed Time of isolated operation.When accumulated running time reaching the 4th setting time T4, multi-gang air-conditioner unit enters
Oily mode operation: all functional modules A1, A2 and A3, which are switched on, exports the first setting time T1 of operation with maximum capacity, then
Functional module A3 is exported with maximum capacity and is run, and functional module A1 and A2 are shut down.When functional module A3 operation second is preset in the past
Fix time T2 when, functional module A3 shut down.Functional module A1 booting is exported with maximum capacity to be run, when functional module A1 was run
When removing another second setting time T2, modules A 1 is shut down.Functional module A2 booting, which is equally exported with maximum capacity, to be run, and function is worked as
When modules A 2 also runs to a second setting time T2, oil operation is finished, and functional module A2 is shut down.Multi-variable air conditioning unit can
To be rotated to functional module A3 booting and be run according to the operating status of functional module A2 before equal oily mode operation.Then,
Multi-variable air conditioning unit can be rotated to functional module A1 booting and according to the operating status of functional module A2 before equal oily mode operation
Operation.
Optionally, after performing oily period, it can be spaced third predetermined time T3, repeat execution oil
Period.
Equally, when the functional module A1, A2 and A3 in multi-variable air conditioning unit are all run before equal oily mode, function
Modules A 1 records the Cumulative Elapsed Time of this state operation when output difference is larger between A2 and A3 or all exports for Smaller load.
When accumulated running time reaching the 4th setting time T4, into equal oily mode operation, operation logic singly opens function mould with above-mentioned
The oily logic of block is identical, and after difference is only oily mode operation, all functional modules return to oily mode fortune
Operating status operation before row.
As a result, by there is functional module A1, between A2 and A3 when the distribution unevenness of lubricating oil, all functional modules A1, A2
It is run with A3 whole standard-sized sheet, the lubricating oil in multi-variable air conditioning unit is all first recycled to functional module A1, A2 and A3, is then led to
The functional module that oil extra in the functional module of shutdown is evacuated to operation by orderly simple function module maximum capacity output is crossed,
Since the compressor oil equalization mouth in functional module is set at the best oil level of compressor, even if the functional module of shutdown has oil to be taken out
It walks, also can guarantee that its compressor being capable of remaining best oil mass.After all functional modules oil operation, it is also achieved that function
The periodically equal oil of energy intermodule, guarantees that each functional module has suitable oil, to guarantee entire multi-variable air conditioning unit
Reliability.
It is understood that " running the multi-joint outdoor machine system of the multi-variable air conditioning unit after entering oily mode
Whole outdoor units " should broadly understood, such as multi-variable air conditioning unit has 5 outdoor units, can also be with after entering oily mode
It runs 3 outdoor units and closes the equal solenoid of these three outdoor units, and another two outdoor unit is not run and its solenoid valve
It does not open, so that the two outdoor units are not involved in equal oil.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, unless separately
There is clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of outdoor unit characterized by comprising
Compressor, the compressor include variable conpacitance compressor and constant volume capacity compressor, and the variable conpacitance compressor has first
Air inlet, first row port and the first equal hydraulic fluid port, the constant volume capacity compressor have the second air inlet, second exhaust port and second
Equal hydraulic fluid port, the second equal hydraulic fluid port and the described first equal hydraulic fluid port pass through edge from the described second equal hydraulic fluid port to the described first equal hydraulic fluid port
The first check valve and be connected with the bypass throttle part of the first check valve parallel connection that direction is connected；
First oil eliminator, first oil eliminator have first entrance, first outlet and the first oil return opening, first oil
The first entrance of separator is connected by second one-way valve with the first row port, the first oil return of first oil eliminator
Mouthful it is connected with the second air inlet of the constant volume capacity compressor, the second one-way valve edge is from the first row port to described the
The direction of the first entrance of one oil eliminator is connected；
Second oil eliminator, second oil eliminator have second entrance, second outlet and the second oil return opening, second oil
The second entrance of separator is connected by third check valve with the second exhaust port, the second oil return of second oil eliminator
Mouthful it is connected with the second air inlet of the constant volume capacity compressor, the third check valve edge is from the second exhaust port to described the
The direction of the second entrance of two oil eliminators is connected；
Four-way valve, the four-way valve have the first valve port, the second valve port, third valve port and the 4th valve port, first valve port with
The first outlet is connected with the second outlet, and the third valve port is connected with the first indoor unit connecting tube；
Outdoor heat exchanger, the outdoor heat exchanger have first port and second port, the first port and second valve
Mouth is connected；
There is gas-liquid separator import and gas-liquid separator to export for gas-liquid separator, the gas-liquid separator, the gas-liquid separation
Device import is connected with the 4th valve port, gas-liquid separator outlet respectively with the first air inlet of the variable conpacitance compressor
Mouth, the first oil return opening of the second air inlet of the constant volume capacity compressor, first oil eliminator and the second oil separation
Second oil return opening of device is connected；
Equal oil inlet pipe, the equal oil inlet pipe have a first end and a second end, and the first end of the equal oil inlet pipe is equal with described first
Hydraulic fluid port is connected, and the equal oil inlet pipe is equipped with equal solenoid, and the second end of the equal oil inlet pipe is suitable for and another outdoor unit
Equal oil inlet pipe second end it is in parallel.
2. outdoor unit according to claim 1, which is characterized in that the bypass throttle part is bypass capillary.
3. outdoor unit according to claim 1, which is characterized in that first oil return opening by the first oily throttling element with
Second air inlet of the constant volume capacity compressor is connected, and second oil return opening passes through the second oily throttling element and the constant volume
Second air inlet of compressor is connected.
4. outdoor unit according to claim 3, which is characterized in that the described first oily throttling element and the described second oil save
Flowing part is oily capillary.
5. outdoor unit according to claim 1, which is characterized in that the second end of the equal oil inlet pipe is equipped with the first cut-off
Valve, the free end of the first indoor unit connecting tube are equipped with the second shut-off valve, the second port connection of the outdoor heat exchanger
There is the second indoor unit connecting tube, the free end of the second indoor unit connecting tube is equipped with third shut-off valve.
6. outdoor unit according to claim 1, which is characterized in that first valve port passes through the 4th check valve and described the
The first outlet of one oil eliminator is connected with the second outlet of second oil eliminator, and the 4th check valve is along from described the
One outlet and the second outlet are connected to the direction of first valve port.
7. outdoor unit according to claim 1 to 6, which is characterized in that the first equal hydraulic fluid port and described second
Equal hydraulic fluid port is respectively provided at the top of the minimum safe operation oil level of the variable conpacitance compressor and the constant volume capacity compressor.
8. a kind of multi-joint outdoor machine system characterized by comprising multiple outdoor units, the outdoor unit are in claim 1-7
The second port of described in any item outdoor units, the outdoor heat exchanger of the plurality of outdoor unit is connected in parallel to each other, multiple described
The free end of first indoor unit connecting tube of outdoor unit is connected in parallel to each other, and the second end of the equal oil inlet pipe of multiple outdoor units that
This is in parallel.
9. a kind of multi-variable air conditioning unit, including multi-joint outdoor machine system according to claim 8.
10. a kind of equal oily control method of multi-variable air conditioning unit according to claim 9 characterized by comprising
Step S1): it runs whole outdoor units of the multi-joint outdoor machine system of the multi-variable air conditioning unit and closes whole outdoor units
Equal solenoid, until the first predetermined time of past；
Step S2): the equal solenoid of whole outdoor units is opened, an outdoor unit and remaining outdoor out of service are continued to run
Machine, until one the second predetermined time of past；
Step S3): another outdoor unit and remaining outdoor unit out of service are run, until another second predetermined time in past；
Step S4): repeat step S3), it has been run under the equal solenoid in whole outdoor units is in the open state each
A outdoor unit so that between the compressor of the multiple outdoor unit oil and make the variable conpacitance compressor of each outdoor unit with
It is oily between constant volume capacity compressor.
11. control method according to claim 10, which is characterized in that the third predetermined time is spaced after step S4),
Repeat step S1)-step S4).
12. control method according to claim 10, which is characterized in that before step S1), the multi-joint outdoor unit system
A part of compressor operation of system, and step S1 is executed after a part of compressor ran for the 4th predetermined time).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410324.2A CN105352064B (en) | 2014-08-19 | 2014-08-19 | Outdoor unit, multi-joint outdoor machine system, multi-variable air conditioning unit and its oily control method |
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| CN201410410324.2A CN105352064B (en) | 2014-08-19 | 2014-08-19 | Outdoor unit, multi-joint outdoor machine system, multi-variable air conditioning unit and its oily control method |
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| CN105180493B (en) * | 2015-09-01 | 2019-12-24 | 珠海格力电器股份有限公司 | Compressor module, multi-module unit and oil balancing control method of multi-module unit |
| CN107152810A (en) * | 2017-06-27 | 2017-09-12 | 珠海格力电器股份有限公司 | Compressor parallel unit and air conditioning system with same |
| CN107939649B (en) * | 2017-11-10 | 2019-07-26 | 广东美的暖通设备有限公司 | Multi-line system and its compressor oil amount adjustment method and regulating device |
| CN109631387A (en) * | 2019-01-07 | 2019-04-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN113883683B (en) * | 2021-09-28 | 2024-01-19 | 青岛海尔中央空调有限公司 | Control method for multi-split air conditioning unit |
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