CN105444477A - Outdoor unit, outdoor unit system, multi-connected air-conditioner unit and oil balancing control method thereof - Google Patents
Outdoor unit, outdoor unit system, multi-connected air-conditioner unit and oil balancing control method thereof Download PDFInfo
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- CN105444477A CN105444477A CN201410410321.9A CN201410410321A CN105444477A CN 105444477 A CN105444477 A CN 105444477A CN 201410410321 A CN201410410321 A CN 201410410321A CN 105444477 A CN105444477 A CN 105444477A
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Abstract
The invention provides an outdoor unit, outdoor unit system, multi-connected air-conditioner unit and oil balancing control method thereof. The outdoor unit comprises a variable-capability compressor, a fixed-capacity compressor, a first oil separator, a second oil separator, a four-way valve, an outdoor heat exchanger, a gas-liquid separator, a first oil balancing branch pipe and a second oil balancing branch pipe. Oil balancing between the compressors can be achieved through the air conditioner outdoor unit. When the air conditioner outdoor unit is used as a functional module of the multi-connected air-conditioner unit, oil balancing between functional modules can be achieved through the first oil balancing branch pipe and the second oil balancing branch pipe.
Description
Technical field
The present invention relates to household electrical appliance technical field, particularly relate to a kind of off-premises station, outdoor machine system, multi-variable air conditioning unit and equal oily control method thereof.
Background technology
Multi-online air-conditioning system is made up of some air-conditioning equipments, can realize the independent assortment of multiple stage off-premises station and multiple stage indoor set.The capacity of a set of multiple on-line system has ten even more than tens usually, and system can by wired in parallel that is identical or different capabilities, and inside modules also has multiple compressors.When load is different, the working order of compressor is not identical yet, the presumable high loaded process of the compressor in system, some low load operations, and may not operating of having.Very easily occur that the distribution of oil between modules is uneven in this case, some module inner compressor possibility lubricating oil is not enough, and some module inner compressor possibility lubricating oil is too much, and the module lacking lubricating oil easily causes the damage of compressor.
For low-pressure cavity compressor, when the compressor of parallel connection exports uneven, the pressure of compressor inside is not identical yet, and oil can offset from the compressor that pressure is high toward the compressor that pressure is low, if the oil of compressor inside is lower than Safe Levels, will very easily cause the damage of compressor.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.
For this reason, one object of the present invention is to propose a kind of off-premises station that can realize the equal oil of compressor chamber.
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 the equal oily control method proposing a kind of multi-variable air conditioning unit.
According to the off-premises station of the embodiment of the present invention, comprise: compressor, described compressor comprises variable conpacitance compressor and constant volume compressor, described variable conpacitance compressor has the first air inlet, first row gas port and the first equal hydraulic fluid port, described constant volume compressor has the second air inlet, its mouth of second row and the second equal hydraulic fluid port, and the described second equal hydraulic fluid port and the described first equal hydraulic fluid port are by along from the described second equal hydraulic fluid port to the first check valve of the direction conducting of the described first equal hydraulic fluid port be connected with the bypass throttle part of described first check valve parallel connection; First oil eliminator, described first oil eliminator has the first entrance, the first outlet, the first oil return opening and the 3rd equal hydraulic fluid port, first entrance of described first oil eliminator is with described first row gas port by being connected along the second check valve from described first row gas port to the direction conducting of described first entrance, and the first oil return opening of described first oil eliminator is connected with the second air inlet of described constant volume compressor; Second oil eliminator, described second oil eliminator has the second entrance, the second outlet, the second oil return opening and the 4th equal hydraulic fluid port, second entrance of described second oil eliminator is connected by three check valve of edge from described second exhaust port to the direction conducting of described second entrance with described second exhaust port, second oil return opening of described second oil eliminator is connected with the second import of described constant volume compressor, between the described 3rd equal hydraulic fluid port and the described 4th equal hydraulic fluid port by along the described 4th equal hydraulic fluid port to the described 3rd equal hydraulic fluid port the 3rd check valve of direction conducting; Cross valve, described cross valve has the first valve port, the second valve port, the 3rd valve port and the 4th valve port, and described first valve port and described first exports to export with described second and is connected, and described 3rd valve port is connected with the first indoor set tube connector; Outdoor heat exchanger, described outdoor heat exchanger has the first port and the second port, and described first port is connected with described second valve port; Gas-liquid separator, described gas-liquid separator has gas-liquid separator import and gas-liquid separator outlet, described gas-liquid separator import is connected with described 4th valve port, and described gas-liquid separator outlet is connected with the second air inlet of described constant volume compressor with the first air inlet of described variable conpacitance compressor respectively; First equal oil inlet pipe, the described first equal oil inlet pipe has first end and the second end, and the first end of the described first equal oil inlet pipe is located at the exit of described 3rd check valve, and the described first equal oil inlet pipe is provided with equal oily check valve; Second equal oil inlet pipe, described second equal oil inlet pipe has first end and the second end, the first end of the described second equal oil inlet pipe is connected with the first outlet side of described equal oily check valve, between the first import that second end of the described second equal oil inlet pipe is connected to the outlet of described vapour liquid separator and described variable conpacitance compressor and the second import of described constant volume compressor, the described second equal oil inlet pipe is provided with equal solenoid.
According to the off-premises station of the embodiment of the present invention, all oil can be realized between variable conpacitance compressor and constant volume compressor, and when according to the functional module of the off-premises station of the embodiment of the present invention as multi-gang air-conditioner unit, can equal oil between practical function module.
In addition, air-conditioner outdoor unit according to the above embodiment of the present invention can also have following additional technical characteristic:
In certain embodiments, the described second equal oil inlet pipe is provided with the equal oily throttling element between described equal solenoid and the second end of the described second equal oil inlet pipe.
In certain embodiments, described equal oily throttling element is equal oily capillary.
In certain embodiments, the second end of the described first equal oil inlet pipe is provided with the first stop valve.
In certain embodiments, described variable conpacitance compressor is provided with feather valve, and one end of described feather valve is communicated with the first air inlet of described variable conpacitance compressor, the second end of described feather valve and the inner space of described variable conpacitance compressor.
In certain embodiments, the first valve port of described cross valve and first of described first oil eliminator exports and described second oil eliminator second export between be connected with the 5th check valve.
In certain embodiments, the minimum safe that the described first equal hydraulic fluid port and the described second equal hydraulic fluid port are located at described positive displacement compressor and described constant volume compressor respectively runs oil level place.
Embodiments of the invention propose a kind of multi-joint outdoor machine system, comprise: multiple off-premises station, described off-premises station is the off-premises station described in above-mentioned any one, wherein the second port of the outdoor heat exchanger of multiple described off-premises station is connected in parallel to each other, the free end of the first indoor set tube connector of multiple described off-premises station is connected in parallel to each other, and the second end of first of multiple described off-premises station the equal oil inlet pipe is connected in parallel to each other.
Embodiments of the invention propose a kind of multi-variable air conditioning unit, comprise above-mentioned multi-joint outdoor machine system.
Embodiments of the invention propose a kind of equal oily control method of above-mentioned multi-variable air conditioning unit, comprising: step S1): run at least two off-premises stations in the multi-joint outdoor machine system of described multi-variable air conditioning unit; Step S2): the equal solenoid of an off-premises station at least two off-premises stations described in opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until first scheduled time in the past; Step S3): the equal solenoid of another off-premises station at least two off-premises stations described in then opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until in the past another first scheduled time, with to make between the compressor of a described off-premises station and the compressor of another off-premises station described all oil, to make between the variable conpacitance compressor of a described off-premises station and constant volume compressor all oil and to make between the variable conpacitance compressor of another off-premises station described and constant volume compressor all oil.
Also comprise in certain embodiments: step S4): repeat step S3) until the equal solenoid of each off-premises station in described at least two off-premises stations was opened first scheduled time.
Also comprise in certain embodiments: the equal solenoid of last off-premises station in described at least two compressors is opened over after described first scheduled time, interval second scheduled time, repeated execution of steps S1)-step S4).
Preferably, wherein in step S1) in run described multi-variable air conditioning unit multi-joint outdoor machine system in all off-premises stations.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the off-premises station according to the embodiment of the present invention.
Fig. 2 is the multi-joint outdoor machine system according to the embodiment of the present invention.
Fig. 3 is the schematic diagram of the multi-variable air conditioning unit according to the 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 the embodiment of the present invention.
Fig. 5 is the flow chart of the equal oily control method of multi-variable air conditioning unit according to another embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The off-premises station according to the embodiment of the present invention is described in detail referring to accompanying drawing.
As shown in Figure 1, according to the off-premises station A of the embodiment of the present invention, comprising: compressor, the first oil eliminator 31, second oil eliminator 32, cross valve 40, outdoor heat exchanger 50, gas-liquid separator 60, the first equal oil inlet pipe 70 and the second equal oil inlet pipe 80.
Described compressor comprises variable conpacitance compressor 10 and constant volume compressor 20.Variable conpacitance compressor 10 has the first air inlet 101, first row gas port 102 and the first equal hydraulic fluid port 103.Constant volume compressor 20 has the second air inlet 201, second exhaust port 202 and the second equal hydraulic fluid port 203.Second equal hydraulic fluid port 203 and the first equal hydraulic fluid port 103 are communicated with by the first check valve 901 and being connected with the bypass throttle part 113 of the first check valve 901 parallel connection along the direction conducting from the equal hydraulic fluid port 103 of the second equal hydraulic fluid port 203 to the first.The equal oil between constant volume compressor 20 and variable conpacitance compressor 10 can be realized thus.
First oil eliminator 31 has the first entrance 311, first and exports the 312, first oil return opening 313 and the 3rd equal hydraulic fluid port 314.First entrance 311 of the first oil eliminator 31 is connected from the second check valve 902 of the direction conducting of first row gas port 102 to the first entrance 311 by edge with first row gas port 102.First oil return opening 313 of the first oil eliminator 31 is connected with the second air inlet 201 of constant volume compressor 20.
Second oil eliminator 32 has the second entrance 321, second and exports the 322, second oil return opening 323 and the 4th equal hydraulic fluid port 324.Second entrance 321 of the second oil eliminator 32 is connected from the 3rd check valve 903 of the direction conducting of second exhaust port 202 to the second entrance 321 by edge with second exhaust port 202.Second oil return opening 323 of the second oil eliminator 32 is connected with the second import 201 of constant volume compressor 20.3rd equal hydraulic fluid port 314 is connected by the 4th check valve 904 along the direction conducting of the equal hydraulic fluid port 314 of the 4th equal hydraulic fluid port 324 to the three with the 4th equal hydraulic fluid port 324.
Cross valve 40 has the first valve port 401, second valve port 402, the 3rd valve port 403 and the 4th valve port 404.First valve port 401 and first exports 312 and second and exports 322 and be connected, and the 3rd valve port 403 is connected with the first indoor set tube connector 111.
Outdoor heat exchanger 50 has the first port 501 and the second port 502.First port 501 is connected with the second valve port 402.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 is connected with the 4th valve port 404.Gas-liquid separator outlet 602 is connected with the second air inlet 201 of constant volume compressor 20 with the first air inlet 101 of variable conpacitance compressor 10 respectively.
First equal oil inlet pipe 70 has first end and the second end.The first end of the first equal oil inlet pipe 70 is located at the exit of the 3rd check valve 903, and the first equal oil inlet pipe 70 is provided with equal oily check valve 71.
Second equal oil inlet pipe 80 has first end and the second end.The first end of the second equal oil inlet pipe 80 is connected with the first outlet side of equal oily single-phase valve 71.Between the first import 101 that second end of the second equal oil inlet pipe 80 is connected to vapour liquid separator outlet 602 and variable conpacitance compressor 10 and the second import 201 of constant volume compressor 20, the second equal oil inlet pipe 80 is provided with equal solenoid 81.
According to the off-premises station of the embodiment of the present invention, by being connected with the second equal hydraulic fluid port 203 of constant volume compressor 20 by first of variable conpacitance compressor 10 the equal hydraulic fluid port 103, the equal oil between variable conpacitance compressor 10 and constant volume compressor 20 can be realized.And, when being used as the functional module of multi-variable air conditioning unit according to the off-premises station of the embodiment of the present invention, can also by the equal oil between the first equal oil inlet pipe and the second equal oil inlet pipe practical function module.
Below with reference to Fig. 1, the off-premises station A according to the specific embodiment of the invention is described.
As described in Figure 1, in some embodiments of the invention, off-premises station A comprises variable conpacitance compressor 10 and constant volume compressor 20, first oil eliminator 31, second oil eliminator 32, cross valve 40, outdoor heat exchanger 50, gas-liquid separator 60, the first equal oil inlet pipe 70 and the second equal oil inlet pipe 80.
Variable conpacitance compressor 10 has the first air inlet 101, first row gas port 102 and the first equal hydraulic fluid port 103.Variable conpacitance compressor 10 is provided with feather valve 104, and one end of feather valve 104 is communicated with the first import 101 of variable conpacitance compressor 10, the second end of feather valve 104 and the inner space of variable conpacitance compressor 10.
Constant volume compressor 20 has the second air inlet 201, second exhaust port 202 and the second equal hydraulic fluid port 203.Second equal hydraulic fluid port 203 and the first equal hydraulic fluid port 103 are communicated with by the first check valve 901 and being connected with the bypass throttle part 113 of the first check valve 901 parallel connection along the direction conducting from the equal hydraulic fluid port 103 of the second equal hydraulic fluid port 203 to the first.
Preferably, the first equal hydraulic fluid port 103 is located at the top at the minimum safe operation oil level place of positive displacement compressor 10, and the minimum safe that the second equal hydraulic fluid port 203 is located at quantitative compressor 20 is run above oil level place.In other words, the position of equal hydraulic fluid port is determined by compressor safe operation oil level, generally runs oil level than compressor minimum safe high.Adopt the copper pipe of suitable caliber to be connected with the equal hydraulic fluid port of constant volume compressor by variable conpacitance compressor, thus realize the equal oil between variable conpacitance compressor and constant volume compressor.
First oil eliminator 31 has the first entrance 311, first and exports the 312, first oil return opening 313 and the 3rd equal hydraulic fluid port 314.First entrance 311 of the first oil eliminator 31 is connected from the second check valve 902 of the direction conducting of first row gas port 102 to the first entrance 311 by edge with first row gas port 102.First oil return opening 313 of the first oil eliminator 31 is connected with the second air inlet 201 of constant volume compressor 20.
Second oil eliminator 32 has the second entrance 321, second and exports the 322, second oil return opening 323 and the 4th equal hydraulic fluid port 324.Second entrance 321 of the second oil eliminator 32 is connected from the 3rd check valve 903 of the direction conducting of second exhaust port 202 to the second entrance 321 by edge with second exhaust port 202.Second oil return opening 323 of the second oil eliminator 32 is connected with the second import 201 of constant volume compressor 20.3rd equal hydraulic fluid port 314 is connected by the 4th check valve 904 along the direction conducting of the equal hydraulic fluid port 314 of the 4th equal hydraulic fluid port 324 to the three with the 4th equal hydraulic fluid port 324.
Advantageously, the first meter out part 1001 is also provided with between the first oil return opening 313 of the first oil eliminator 31 and the second air inlet 201 of constant volume compressor 20.The second meter out part 1002 is also provided with between second oil return opening 323 of the second oil eliminator 32 and the second import 201 of constant volume compressor 20.First meter out part 1001 and the second meter out part 1002 are oil return capillary.
Cross valve 40 has the first valve port 401, second valve port 402, the 3rd valve port 403 and the 4th valve port 404.First valve port 401 and first exports 312 and second and exports 322 and be connected, and the 3rd valve port 403 is connected with the first indoor set tube connector 111.Preferably, first of the first valve port 401 and the first oil eliminator 31 export 312 and second oil eliminator 32 first export 322 between be connected with the 5th check valve 905.The free end of the first indoor set tube connector 111 is provided with the second stop valve 122.The free end that second port 502 place of outdoor heat exchanger 50 is connected with the second indoor set tube connector 112, second indoor set tube connector 112 is provided with the 3rd stop valve 123.Thus, be convenient to connect indoor apparatus of air conditioner.
Outdoor heat exchanger 50 has the first port 501 and the second port 502.First port 501 is connected with the second valve port 402.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 is connected with the 4th valve port 404.Gas-liquid separator outlet 602 is connected with the second air inlet 201 of constant volume compressor 20 with the first air inlet 101 of variable conpacitance compressor 10 respectively.
First equal oil inlet pipe 70 has first end and the second end.The first end of the first equal oil inlet pipe 70 is located at the exit of the 3rd check valve 903, and the first equal oil inlet pipe 70 is provided with equal oily check valve 71.Second end of the first equal oil inlet pipe 70 is provided with the first stop valve 121.Thus, when according to the functional module of the air-conditioner outdoor unit of the embodiment of the present invention as multi-online air-conditioning system, be convenient to be connected with other air-conditioner outdoor unit, to form multi-joint outdoor machine system.
Second equal oil inlet pipe 80 has first end and the second end.The first end of the second equal oil inlet pipe 80 is connected with the first outlet side of equal oily single-phase valve 71.Between the first import 101 that second end of the second equal oil inlet pipe 80 is connected to vapour liquid separator outlet 602 and variable conpacitance compressor 10 and the second import 201 of constant volume compressor 20, the second equal oil inlet pipe 80 is provided with equal solenoid 81.Second equal oil inlet pipe 80 is provided with the equal oily throttling element 82 between equal solenoid 81 and the second end of the second equal oil inlet pipe 80.Equal oily throttling element 82 can be equal oily capillary.
According to the off-premises station of the embodiment of the present invention, be provided with by three check valve 903 of the 4th equal hydraulic fluid port 324 towards the 3rd equal hydraulic fluid port 314 between the 3rd equal hydraulic fluid port 314 of the first oil eliminator 31 and the 4th equal hydraulic fluid port 324 of the second oil eliminator 32.3rd check valve 903 is connected with equal solenoid 81 side, the opposite side of equal solenoid 81 is divided into two-way by threeway, wherein a road connects one end of capillary 82, and the other end and the gas-liquid separator of capillary 82 export 602 copper pipes and be communicated with, and another road connects the first stop valve 121.
And, when being used for the functional module of multi-gang air-conditioner unit according to the off-premises station of the embodiment of the present invention, the first stop valve 121 between functional module can be connected, the above-mentioned pipeline of each functional module is made to be in connected state, and according to functional module running status and running time, control the unlatching of the equal solenoid 81 of each functional module, and then the equal oil between practical function module, expand the applicability of the off-premises station according to the embodiment of the present invention thus.
Below with reference to Fig. 2, the multi-joint outdoor machine system according to the embodiment of the present invention is described.
As shown in Figure 2, multiple off-premises station is comprised according to the multi-joint outdoor machine system of the embodiment of the present invention.Described off-premises station can be the off-premises station A described according to the above embodiment of the present invention.Figure 2 illustrates three off-premises stations, for the ease of distinguishing, three off-premises stations are labeled as off-premises station A1 respectively, off-premises station A2 and off-premises station A3.Off-premises station A1, second port of the outdoor heat exchanger of off-premises station A2 and off-premises station A3 is connected in parallel to each other, off-premises station A1, the free end of the first indoor set tube connector of off-premises station A2 and off-premises station A3 is connected in parallel to each other, and the second end of first of off-premises station A1, off-premises station A2 and off-premises station A3 the equal oil inlet pipe is connected in parallel to each other.
Be understandable that, multi-joint outdoor machine system of the present invention is not limited to three off-premises stations, can arrange the off-premises station of any suitable quantity according to specific needs.
For the multi-joint outdoor machine system be formed in parallel by multiple off-premises station (i.e. functional module), in different indoor load situations, the running status of each functional module in parallel multi-joint outdoor machine system may be different, some functional module high load capacities export, some functional module underloads export, and some functional modules even do not operate.Cause the return-air amount that exists between functional module inconsistent thus, the distribution of the lubricating oil between functional module also will be caused uneven: partial function module condenses machine lubricating oil is many, and partial function module condenses machine lubricating oil is few.
According to multi-joint outdoor machine system of the present invention, be provided with by three check valve 903 of the 4th equal hydraulic fluid port 324 towards the 3rd equal hydraulic fluid port 314 between the 3rd equal hydraulic fluid port 314 of the first oil eliminator 31 and the 4th equal hydraulic fluid port 324 of the second oil eliminator 32.3rd check valve 903 is connected with equal solenoid 81 side, the opposite side of equal solenoid 81 is divided into two-way by threeway, wherein a road connects one end of capillary 82, and the other end and the gas-liquid separator of capillary 82 export 602 copper pipes and be communicated with, and another road connects the first stop valve 121.And, when being used for the functional module of multi-gang air-conditioner unit according to the off-premises station of the embodiment of the present invention, the first stop valve 121 between functional module can be connected, the above-mentioned pipeline of each functional module is made to be in connected state, and according to functional module running status and running time, control the unlatching of the equal solenoid 81 of each functional module, and then the equal oil between practical function module, expand the applicability of the off-premises station according to the embodiment of the present invention thus.
Below with reference to Fig. 3, the multi-variable air conditioning unit according to the embodiment of the present invention is described.As shown in Figure 3, above-mentioned multi-joint outdoor machine system and indoor set system is comprised according to the multi-variable air conditioning unit of the embodiment of the present invention.Illustrated in Fig. 3 that multi-joint outdoor machine system comprises three off-premises station A1-A3, indoor set system comprises three indoor set N1-N3, but the present invention is not limited to this.
According to the multi-variable air conditioning unit of the embodiment of the present invention, be in operation, can by the first equal hydraulic fluid port and the second all oil realization all oil be connected with each other between the variable conpacitance compressor of each off-premises station of multi-joint outdoor machine system and constant volume compressor.And, be connected by the first equal oil inlet pipe of the off-premises station A1-A3 by multi-joint outdoor machine system, the equal oil between off-premises station can be realized, ensure that each off-premises station has proper lubrication oil, thus ensure the reliability of whole multi-variable air conditioning unit.
Below with reference to Fig. 4, the equal oily control method according to the multi-variable air conditioning unit of the embodiment of the present invention is described.
As shown in Figure 4, the equal oily control method of the multi-variable air conditioning unit of embodiments of the invention, comprising:
Step S1): run at least two off-premises stations in the multi-joint outdoor machine system of described multi-variable air conditioning unit.
Step S2): the equal solenoid of an off-premises station at least two off-premises stations described in opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until first scheduled time in the past.
Step S3): the equal solenoid of another off-premises station at least two off-premises stations described in then opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until in the past another first scheduled time, with to make between the compressor of a described off-premises station and the compressor of another off-premises station described all oil, to make between the variable conpacitance compressor of a described off-premises station and constant volume compressor all oil and to make between the variable conpacitance compressor of another off-premises station described and constant volume compressor all oil.
The equal oily control method of multi-variable air conditioning unit is in accordance with a preferred embodiment of the present invention described below with reference to Fig. 5.According to this preferred embodiment of the present invention, the equal oily control method of described multi-variable air conditioning unit comprises the following steps:
Step S1): run at least two off-premises stations in the multi-joint outdoor machine system of described multi-variable air conditioning unit.
Step S2): the equal solenoid of an off-premises station at least two off-premises stations described in opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until first scheduled time in the past.
Step S3): the equal solenoid of another off-premises station at least two off-premises stations described in then opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until in the past another first scheduled time, with to make between the compressor of a described off-premises station and the compressor of another off-premises station described all oil, to make between the variable conpacitance compressor of a described off-premises station and constant volume compressor all oil and to make between the variable conpacitance compressor of another off-premises station described and constant volume compressor all oil.
Step S4): repeat step S3) until the equal solenoid of each off-premises station in described at least two off-premises stations was opened first scheduled time.
The equal solenoid of last off-premises station in described at least two compressors is opened over after described first scheduled time, interval second scheduled time, repeated execution of steps S1)-step S4).
Wherein in step S1) in run described multi-variable air conditioning unit multi-joint outdoor machine system in all off-premises stations.
In other words, according to the equal oily control method of the multi-variable air conditioning unit of the embodiment of the present invention, one end of equal oily check valve 71 is connected at the first equal oil inlet pipe 70 of the bottom correct position extraction of the oil eliminator 30 of each off-premises station, another side of equal oily check valve 71 is divided into two-way by threeway: wherein, one tunnel is connected with the side of equal solenoid 81, the opposite side of equal solenoid 81 connects one end of equal oily capillary 82, and the equal other end of oily capillary 82 exports 602 with the gas-liquid separator of gas-liquid separator 60 and is communicated with; Another road connects the first stop valve 121.First equal oil inlet pipe 70 of multiple off-premises station is connected in parallel to each other.
Thus, operationally, all oil can be realized by the first equal hydraulic fluid port of communicating with each other and the second equal hydraulic fluid port between the variable conpacitance compressor of each off-premises station and constant volume compressor.
And, all oil can be realized by the first equal oil inlet pipe alongside one another and the second equal oil inlet pipe between multiple off-premises station.
More specifically, according to the equal oily control method of the embodiment of the present invention, bottom oil eliminator in each functional module (i.e. off-premises station), correct position draws one end that a pipeline connects equal oily check valve, another side of equal oily check valve 71 is divided into two-way by threeway: wherein, one tunnel is connected with the side of equal solenoid 81, the opposite side of equal solenoid 81 connects one end of equal oily capillary 82, and the equal other end of oily capillary 82 exports 602 with the gas-liquid separator of gas-liquid separator 60 and is communicated with; Another road connects the first stop valve 121.By copper pipe, first of difference in functionality intermodule the equal oil inlet pipe is linked together, and keep the first stop valve of each functional module to be in open mode
Such as, when there is distribution of lubrication oil inequality between functional module, the equal solenoid in oil balance tube road first scheduled time T1 that unlatching one is suitable separately one by one of each functional module: if functional module A1 oil mass is on the high side, so the oil mass of its oil eliminator is also on the high side, when the equal solenoid of functional module A2 is opened, lubricating oil unnecessary in the oil eliminator of functional module A1 will by the first equal oil inlet pipe entered function modules A 2 between functional module, the equal solenoid other end due to functional module A2 connects the compressor return air side of this functional module, and another road connects the equal oily check valve that is in oppositely disconnection, so, these unnecessary lubricating oil can only get back to functional module A2 compressor by the capillary after equal solenoid and equal solenoid is inner, if functional module A1 oil mass is on the low side, oil mass so in its oil eliminator is also on the low side, below the equal hydraulic fluid port of oil eliminator, even if the equal solenoid of functional module A2 is opened, do not have lubricating oil to get back to the compressor of functional module A2, which achieves intermodule lubricating oil by multidirectional few reallocation yet.If after each functional module all performs one time after the scheduled time T2 of interval second, order performs one time again, be so just equal oil cycles between a complete functional module with (T1*n+T2), wherein n is the quantity of off-premises station, also the periodicity just achieved between functional module all has, ensure that each functional module has proper lubrication oil, thus ensure the reliability of whole system.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (13)
1. an off-premises station, is characterized in that, comprising:
Compressor, described compressor comprises variable conpacitance compressor and constant volume compressor, described variable conpacitance compressor has the first air inlet, first row gas port and the first equal hydraulic fluid port, described constant volume compressor has the second air inlet, its mouth of second row and the second equal hydraulic fluid port, and the described second equal hydraulic fluid port and the described first equal hydraulic fluid port are by along from the described second equal hydraulic fluid port to the first check valve of the direction conducting of the described first equal hydraulic fluid port be connected with the bypass throttle part of described first check valve parallel connection;
First oil eliminator, described first oil eliminator has the first entrance, the first outlet, the first oil return opening and the 3rd equal hydraulic fluid port, first entrance of described first oil eliminator is with described first row gas port by being connected along the second check valve from described first row gas port to the direction conducting of described first entrance, and the first oil return opening of described first oil eliminator is connected with the second air inlet of described constant volume compressor; Second oil eliminator, described second oil eliminator has the second entrance, the second outlet, the second oil return opening and the 4th equal hydraulic fluid port, second entrance of described second oil eliminator is connected by three check valve of edge from described second exhaust port to the direction conducting of described second entrance with described second exhaust port, second oil return opening of described second oil eliminator is connected with the second import of described constant volume compressor, and the described 3rd equal hydraulic fluid port is connected by the 4th check valve along the described 4th equal hydraulic fluid port to the direction conducting of the described 3rd equal hydraulic fluid port with the described 4th equal hydraulic fluid port;
Cross valve, described cross valve has the first valve port, the second valve port, the 3rd valve port and the 4th valve port, and described first valve port and described first exports to export with described second and is connected, and described 3rd valve port is connected with the first indoor set tube connector;
Outdoor heat exchanger, described outdoor heat exchanger has the first port and the second port, and described first port is connected with described second valve port;
Gas-liquid separator, described gas-liquid separator has gas-liquid separator import and gas-liquid separator outlet, described gas-liquid separator import is connected with described 4th valve port, and described gas-liquid separator outlet is connected with the second air inlet of described constant volume compressor with the first air inlet of described variable conpacitance compressor respectively;
First equal oil inlet pipe, the described first equal oil inlet pipe has first end and the second end, and the first end of the described first equal oil inlet pipe is located at the exit of described 3rd check valve, and the described first equal oil inlet pipe is provided with equal oily check valve;
Second equal oil inlet pipe, described second equal oil inlet pipe has first end and the second end, the first end of the described second equal oil inlet pipe is connected with the first outlet side of described equal oily check valve, between the first import that second end of the described second equal oil inlet pipe is connected to the outlet of described vapour liquid separator and described variable conpacitance compressor and the second import of described constant volume compressor, the described second equal oil inlet pipe is provided with equal solenoid.
2. off-premises station according to claim 1, is characterized in that, the described second equal oil inlet pipe is provided with the equal oily throttling element between described equal solenoid and the second end of the described second equal oil inlet pipe.
3. off-premises station according to claim 2, is characterized in that, described equal oily throttling element is equal oily capillary.
4. off-premises station according to claim 1, is characterized in that, the second end of the described first equal oil inlet pipe is provided with the first stop valve.
5. off-premises station according to claim 1, it is characterized in that, described variable conpacitance compressor is provided with feather valve, and one end of described feather valve is communicated with the first air inlet of described variable conpacitance compressor, the second end of described feather valve and the inner space of described variable conpacitance compressor.
6. off-premises station according to claim 1, is characterized in that, the first valve port of described cross valve and first of described first oil eliminator export and described second oil eliminator second export between be connected with the 5th check valve.
7. the off-premises station according to any one of claim 1-6, is characterized in that, the minimum safe that the described first equal hydraulic fluid port and the described second equal hydraulic fluid port are located at described positive displacement compressor and described constant volume compressor respectively runs oil level place.
8. a multi-joint outdoor machine system, it is characterized in that, comprise: multiple off-premises station, the off-premises station of described off-premises station according to any one of claim 1-7, wherein the second port of the outdoor heat exchanger of multiple described off-premises station is connected in parallel to each other, the free end of the first indoor set tube connector of multiple described off-premises station is connected in parallel to each other, and the second end of first of multiple described off-premises station the equal oil inlet pipe is connected in parallel to each other.
9. a multi-variable air conditioning unit, comprises multi-joint outdoor machine system according to claim 8.
10. an equal oily control method for multi-variable air conditioning unit according to claim 9, is characterized in that, comprising:
Step S1): run at least two off-premises stations in the multi-joint outdoor machine system of described multi-variable air conditioning unit;
Step S2): the equal solenoid of an off-premises station at least two off-premises stations described in opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until first scheduled time in the past;
Step S3): the equal solenoid of another off-premises station at least two off-premises stations described in then opening and the equal solenoid of all the other off-premises stations at least two off-premises stations described in closing, until in the past another first scheduled time, with to make between the compressor of a described off-premises station and the compressor of another off-premises station described all oil, to make between the variable conpacitance compressor of a described off-premises station and constant volume compressor all oil and to make between the variable conpacitance compressor of another off-premises station described and constant volume compressor all oil.
11. control methods according to claim 10, is characterized in that, also comprise:
Step S4): repeat step S3) until the equal solenoid of each off-premises station in described at least two off-premises stations was opened first scheduled time.
12. control methods according to claim 11, it is characterized in that, also comprise: the equal solenoid of last off-premises station in described at least two compressors is opened over after described first scheduled time, interval second scheduled time, repeated execution of steps S1)-step S4).
13. control methods according to claim 11, is characterized in that, wherein in step S1) in run described multi-variable air conditioning unit multi-joint outdoor machine system in all off-premises stations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410410321.9A CN105444477B (en) | 2014-08-19 | 2014-08-19 | Outdoor unit, outdoor machine system, multi-variable air conditioning unit and its oily control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410410321.9A CN105444477B (en) | 2014-08-19 | 2014-08-19 | Outdoor unit, outdoor machine system, multi-variable air conditioning unit and its oily control method |
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| CN105444477A true CN105444477A (en) | 2016-03-30 |
| CN105444477B CN105444477B (en) | 2018-09-07 |
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| CN105444477B (en) | 2018-09-07 |
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