CN103277940A - Oil balancing device and air-conditioning system - Google Patents
Oil balancing device and air-conditioning system Download PDFInfo
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- CN103277940A CN103277940A CN2013101904719A CN201310190471A CN103277940A CN 103277940 A CN103277940 A CN 103277940A CN 2013101904719 A CN2013101904719 A CN 2013101904719A CN 201310190471 A CN201310190471 A CN 201310190471A CN 103277940 A CN103277940 A CN 103277940A
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Abstract
The invention discloses an oil balancing device. The oil balancing device comprises an oil separator, a first opening and a first valve, wherein the first opening is formed in the side face of the oil separator, the height between the first opening and the bottom of the oil separator is a first height, the first valve comprises a first end and a second end, the first end is connected with the first opening, the second end is connected with N outdoor units of M indoor units except for an Ith outdoor unit, and the N is a positive integer which is not larger than M-1. The oil separator receives lubricating oil exhausted by at least one outdoor unit of the N outdoor units through the first valve, when the height of the lubricating oil in the oil separator is higher than the first height, partial lubricating oil which is higher than the first height in the lubricating oil is led into at least one outdoor unit of the N outdoor units through the first valve, and the invention further discloses an air-conditioning system comprising the oil balancing device.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of oil balancing device and air-conditioning system.
Background technology
Air-conditioning is a kind of for the unit of handling air temperature variations being provided for area of space, especially confined space zone, and it can be used for the parameters such as air themperature, humidity, cleanliness factor and air velocity of area of space are regulated.
Wherein, air-conditioning generally can be divided into monomer air-conditioning and central air-conditioning, and wherein, central air-conditioning mainly is applicable to large-scale place, owing to can realize centralized Control, and better with respect to its operational effect of monomer air-conditioning, so obtained more and more users' welcome.
Generally, central air-conditioning comprises following structure:
At least one off-premises station, and each off-premises station (be example with i off-premises station) is connected with following structure:
Cross valve is connected in described i off-premises station;
Oil eliminator is connected in described i off-premises station by described cross valve;
Compressor is connected in described oil eliminator;
Gas-liquid separator is connected in described compressor;
The oil balance tube road, by described oil balance tube road the corresponding oil eliminator of at least one off-premises station is connected, to guarantee the oily balance in this at least one oil eliminator, damage the stator of oil eliminator too much to prevent oil, and by causing wear and tear in machines very little.
At least one indoor set;
Wherein, when this central air-conditioning is used for pyrogenicity, make the refrigerant vaporization by compressor, then by the gas-liquid separator cross valve of flowing through, and then flow to i indoor set at least one indoor set, and the liquefaction heat release, and then make the indoor temperature rising.
In the prior art, have opening in the oil eliminator, can reach the oil that also can receive other off-premises stations transmission by this opening with unnecessary oil discharged to other off-premises stations by this opening.So, lubricating oil can enter system and participate in circulation, and is if too much oil enters system, bigger to the systematic function influence.
Summary of the invention
The embodiment of the invention provides a kind of oil balancing device and air-conditioning system, be used for solving the technical problem that the too much lubricating oil participation system circulation of prior art can have a strong impact on systematic function, realized that the unnecessary lubricating oil of control enters system, keeps the stable technique effect of systematic function.
A kind of oil balancing device is applied in the air-conditioning system, comprises M off-premises station in the described air-conditioning system, and described oil balancing device is arranged in i the off-premises station in the described M off-premises station, and M is positive integer, and i is arbitrary integer in 1 to M, and described oil balancing device comprises:
Oil eliminator;
First opening is arranged at the side of described oil eliminator, and the height of the bottom of the described oil eliminator of described first extended distance is first height;
First valve comprises first end and second end, and wherein, described first end links to each other with described first opening, and N off-premises station in described second end and the described M off-premises station except described i off-premises station is connected, and N is the positive integer that is not more than M-1;
Wherein, when the height of the lubricating oil in the described oil eliminator is higher than described first height, by described first valve parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station in the described N off-premises station.
Preferable, described oil eliminator also comprises second opening, the refrigerant in the described oil eliminator can be imported described air-conditioning system by described second opening.
Preferable, described oil balancing device also comprises:
Compressor, described compressor are provided with the 3rd opening and the 4th opening, and described the 3rd opening all links to each other with described oil eliminator by conduit with described the 4th opening, and the height of the bottom of the described compressor of described the 4th extended distance is second height;
Described oil eliminator also comprises: the 5th opening, and described the 5th opening is connected with described the 4th opening with described the 3rd opening on the described compressor by conduit;
Wherein, when the height of the lubricating oil in the described compressor was higher than described second height, the lubricating oil in the described compressor can enter described oil eliminator by described the 3rd opening and/or described the 4th opening.
Preferable, described oil balancing device also comprises:
Cross valve is connected in described i off-premises station by described cross valve with described oil eliminator;
Gas-liquid separator, first end of described gas-liquid separator is connected in described oil eliminator and described i off-premises station by described cross valve, and second end of described gas-liquid separator is connected in described compressor.
Preferable, described oil balancing device also comprises:
Throttling arrangement, first end of described throttling arrangement is connected between described gas-liquid separator and the described cross valve, second end of described throttling arrangement is connected in described oil eliminator, wherein, can control lubricating oil and refrigerant from the lead speed of described gas-liquid separator of described oil eliminator by described throttling arrangement.
Preferable, described oil balancing device also comprises:
Temperature-detecting device, be arranged between described first end of described first end of described throttling arrangement and described gas-liquid separator, can obtain first temperature value for the temperature that characterizes lubricating oil by described throttling arrangement and/or refrigerant by described temperature-detecting device; Wherein, when described first temperature value during less than the first preset temperature threshold value, show that described i off-premises station is in the duty that lacks lubricating oil, when described first temperature value during greater than the second preset temperature threshold value, show that described i off-premises station is in the duty of lubricating oil redundancy.
A kind of air-conditioning system comprises:
M off-premises station, wherein, described M is positive integer;
At least one indoor set;
Be arranged at the oil balancing device in i the off-premises station in the described M off-premises station, described oil balancing device specifically comprises: oil eliminator; First opening is arranged at the side of described oil eliminator, and the height of the bottom of the described oil eliminator of described first extended distance is first height; First valve comprises first end and second end, and wherein, described first end links to each other with described first opening, and N off-premises station in described second end and the described M off-premises station except described i off-premises station is connected, and N is the positive integer that is not more than M-1; Wherein, when the height of the lubricating oil in the described oil eliminator is higher than described first height, by described first valve parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station in the described N off-premises station.
Preferable, described oil eliminator also comprises second opening, the refrigerant in the described oil eliminator can be imported described air-conditioning system by described second opening.
Preferable, described oil balancing device also comprises:
Compressor, described compressor are provided with the 3rd opening and the 4th opening, and described the 3rd opening all links to each other with described oil eliminator by conduit with described the 4th opening, and the height of the bottom of the described compressor of described the 4th extended distance is second height;
Described oil eliminator also comprises: the 5th opening, and described the 5th opening is connected with described the 4th opening with described the 3rd opening on the described compressor by conduit;
Wherein, when the height of the lubricating oil in the described compressor was higher than described second height, the lubricating oil in the described compressor can enter described oil eliminator by described the 3rd opening and/or described the 4th opening.
Preferable, described oil balancing device also comprises:
Cross valve is connected in described i off-premises station by described cross valve with described oil eliminator;
Gas-liquid separator, first end of described gas-liquid separator is connected in described oil eliminator and described i off-premises station by described cross valve, and second end of described gas-liquid separator is connected in described compressor.
Preferable, described oil balancing device also comprises:
Throttling arrangement, first end of described throttling arrangement is connected between described gas-liquid separator and the described cross valve, second end of described throttling arrangement is connected in described oil eliminator, wherein, can control lubricating oil and refrigerant from the lead speed of described gas-liquid separator of described oil eliminator by described throttling arrangement.
Preferable, described oil balancing device also comprises:
Temperature-detecting device, be arranged between described first end of described first end of described throttling arrangement and described gas-liquid separator, can obtain first temperature value for the temperature that characterizes lubricating oil by described throttling arrangement and/or refrigerant by described temperature-detecting device; Wherein, when described first temperature value during less than the first preset temperature threshold value, show that described i off-premises station is in the duty that lacks lubricating oil, when described first temperature value during greater than the second preset temperature threshold value, show that described i off-premises station is in the duty of lubricating oil redundancy.
Oil balancing device in the embodiment of the invention can be applied in the air-conditioning system, can comprise M off-premises station in the described air-conditioning system, described oil balancing device can be arranged in i the off-premises station in the described M off-premises station, M is positive integer, i is the arbitrary integer in 1 to M, and described oil balancing device can comprise: oil eliminator; First opening is arranged at the side of described oil eliminator, and the height of the bottom of the described oil eliminator of described first extended distance is first height; First valve comprises first end and second end, and wherein, described first end links to each other with described first opening, and N off-premises station in described second end and the described M off-premises station except described i off-premises station is connected, and N is the positive integer that is not more than M-1; Wherein, when the height of the lubricating oil in the described oil eliminator is higher than described first height, by described first valve parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station in the described N off-premises station.
In the embodiment of the invention, include described first valve in the described oil balancing device, lubricating oil in described i off-premises station more for a long time, can open described first valve, unnecessary lubricating oil is discharged, receive use for other off-premises stations that lack lubricating oil, if and the lubricating oil in each off-premises station is all just in time balanced, even perhaps the lubricating oil in described i the off-premises station is more, but a described N off-premises station does not all lack lubricating oil, then can close described first valve, can not make lubricating oil in described i the off-premises station import the circulatory system of described air-conditioning system, can effectively guarantee the performance of described air-conditioning system like this, avoid because of the more operate as normal that has influence on whole air-conditioning system of lubricating oil in the circulatory system.
Description of drawings
Fig. 1 is the primary structure figure of oil balancing device in the embodiment of the invention;
Fig. 2 is the detailed structure view of oil balancing device in the embodiment of the invention;
Fig. 3 is the primary structure figure of a kind of air-conditioning system in the embodiment of the invention;
Fig. 4 is the detailed structure view of a kind of air-conditioning system in the embodiment of the invention.
The specific embodiment
Oil balancing device in the embodiment of the invention can be applied in the air-conditioning system, can comprise M off-premises station in the described air-conditioning system, described oil balancing device can be arranged in i the off-premises station in the described M off-premises station, M is positive integer, i is the arbitrary integer in 1 to M, and described oil balancing device can comprise: oil eliminator; First opening is arranged at the side of described oil eliminator, and the height of the bottom of the described oil eliminator of described first extended distance is first height; First valve comprises first end and second end, and wherein, described first end links to each other with described first opening, and N off-premises station in described second end and the described M off-premises station except described i off-premises station is connected, and N is the positive integer that is not more than M-1; Wherein, when the height of the lubricating oil in the described oil eliminator is higher than described first height, by described first valve parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station in the described N off-premises station.
In the embodiment of the invention, include described first valve in the described oil balancing device, lubricating oil in described i off-premises station more for a long time, can open described first valve, unnecessary lubricating oil is discharged, receive use for other off-premises stations that lack lubricating oil, if and the lubricating oil in each off-premises station is all just in time balanced, even perhaps the lubricating oil in described i the off-premises station is more, but a described N off-premises station does not all lack lubricating oil, then can close described first valve, can not make lubricating oil in described i the off-premises station import the circulatory system of described air-conditioning system, can effectively guarantee the performance of described air-conditioning system like this, avoid because of the more operate as normal that has influence on whole air-conditioning system of lubricating oil in the circulatory system.
Referring to Fig. 1, the embodiment of the invention provides a kind of oil balancing device, described oil balancing device can be applied in the air-conditioning system, can comprise M off-premises station in the described air-conditioning system, described oil balancing device can be arranged in i the off-premises station in the described M off-premises station, M is positive integer, and i can be arbitrary integer in 1 to M.Described oil balancing device can comprise oil eliminator 2, the first opening 2d and first valve 8.
That is, in the embodiment of the invention, described i off-premises station can be any off-premises station in the described M off-premises station.
In the embodiment of the invention, in any one that can be in a described M off-premises station or a plurality of off-premises station described oil balancing device is set.Preferable, in the embodiment of the invention, all described oil balancing device can be set in each off-premises station in the described M off-premises station.
The first opening 2d can be arranged at the side of oil eliminator 2, and the first opening 2d can be first height apart from the height of the bottom of oil eliminator 2, and namely the 2d shown in Fig. 1 is described first height to the distance of the horizontal plane at 2c place.
In the embodiment of the invention, described oil balancing device can also comprise cross valve 3, oil eliminator 2 can be connected in described i off-premises station by cross valve 3.
As can be seen from Figure 1, described second end of first valve 8 can link to each other with first end of a cross valve 3, second end by cross valve 3, first valve 8 can be connected to first end of the commutator 4 in described i the off-premises station, second end of commutator 4 is connected with second valve 5, for example second valve 5 can be electric expansion valve, first valve 8 can be connected to a described N off-premises station by second valve 5.
The 3rd end of cross valve 3 links to each other with at least one indoor set, that is, second end by cross valve 3 can link to each other first valve 8 with described at least one indoor set.
In the embodiment of the invention, if the height of the lubricating oil in the oil eliminator 2 is higher than described first when height, can open first valve 8, by first valve 8 parts of lubricating oil that is higher than described first height in the described lubricating oil be imported at least one off-premises station in the described N off-premises station.
Thereby, if it is too much that described i off-premises station is in lubricating oil, it is the duty of lubricating oil redundancy, can open first valve 8, the parts of lubricating oil that is higher than described first height in the oil eliminator 8 is discharged, this parts of lubricating oil can be led at least one off-premises station in the described N off-premises station, preferable, the off-premises station that imports can be the off-premises station that lacks lubricating oil, like this, can reach the balance of lubricating oil between each off-premises station, avoid some off-premises station lubricating oil redundant and some off-premises station lubricating oil deficiency guarantees that as far as possible each off-premises station can both operate as normal.
And, if do not have off-premises station to be in the described M off-premises station to lack the duty of lubricating oil, even the lubricating oil redundancy in the off-premises station that then has, also can not open first valve 8 in the corresponding off-premises station, if because open first valve 8 this moment, redundant lubricating oil can flow into the circulatory system of described air-conditioning system, does not have off-premises station to receive these lubricating oil, then lubricating oil can participate in circulation in the circulatory system, so greatly the performance of the described air-conditioning system of influence.Effectively avoid this situation after adopting the technical scheme in the embodiment of the invention, guaranteed the reliability of system.
As shown in Figure 1, oil eliminator 2 also includes the second opening 2b, the refrigerant in the oil eliminator 8 can be imported described air-conditioning system by the second opening 2b and cross valve 3.In the embodiment of the invention, the refrigerant in the oil eliminator 8 can be imported the circulatory system of described air-conditioning system, refrigerant can participate in circulation.
In the embodiment of the invention, compressor 1 can also be included in the described oil balancing device, the 3rd opening 1a and the 4th opening 1b can be provided with on the compressor 1.The 3rd opening 1a all can link to each other with oil eliminator 2 by conduit with the 4th opening 1b, and the 4th opening 1b can be second height apart from the height of the bottom of compressor 1.
In the embodiment of the invention, oil eliminator 2 can also include the 5th opening 2a, and the 5th opening 2a can link to each other with the 4th opening 1b with the 3rd opening 1a on the compressor 1 by conduit.
Wherein, the 3rd opening 1a on the compressor 1 can be used for discharging refrigerant and a spot of lubricating oil of compressor 1, when the height of the lubricating oil in the compressor 1 is higher than described second height, can the parts of lubricating oil that be higher than described second height in the compressor 1 be discharged by the 4th opening 1b on the compressor 1, the refrigerant in the compressor 1 and lubricating oil all can import oil eliminator 2 by the 5th opening 2a on the oil eliminator 2.
In the embodiment of the invention, compressor 1 can also be connected with gas-liquid separator 11, and gas-liquid separator 11 can be the part of compressor 1, can be separate equipment with compressor 1 also perhaps.First end of gas-liquid separator 11 is connected in oil eliminator 2 and described i off-premises station by cross valve 3, and second end of gas-liquid separator 11 is connected in compressor 1.Wherein, oil eliminator 2 can be the 6th opening 2c of oil eliminator 2 with the end that gas-liquid separator 11 links to each other with cross valve 3.
Concrete, gas-liquid separator 11 can have the first end 1c and second end, and the 4th end of the first end 1c cross valve 3 of gas-liquid separator 11 and oil eliminator 2 link to each other, and wherein, can be connected with filter between the first end 1c of gas-liquid separator 11 and cross valve 3.Wherein, in order to prevent stopping up conduit by refrigerant gas and lubricating oil, needs employing filter filters out the excessive material of radius wherein usually.
In the embodiment of the invention, described oil balancing device can also include throttling arrangement 12, first end of throttling arrangement 12 is connected between gas-liquid separator 11 and the cross valve 3, second end of throttling arrangement 12 is connected in oil eliminator 2, wherein, can control lubricating oil and refrigerant from the speed of oil eliminator 2 guiding gas-liquid separators 11 by throttling arrangement 12.
In the embodiment of the invention, throttling arrangement 12 can be capillary, perhaps also can be other devices with restriction effect.Be example with the capillary among Fig. 1.
In the embodiment of the invention, between second end of oil eliminator 2 and throttling arrangement 12, can also be provided with filter.Because the internal diameter of throttling arrangement 12 is less, in order to prevent stopping up throttling arrangement 12 by refrigerant gas and the lubricating oil of described throttling arrangement 12, need to adopt filter to filter out wherein the excessive material of radius usually.
Wherein, in process of refrigerastion, refrigerant enters commutator 4 by the second opening 2b and the cross valve 3 of oil eliminator 2, enter described at least one indoor set by commutator 4, second valve 5 and the 3rd valve 6, after passing through described at least one indoor set, can flow through the 4th valve 7 and cross valve 3 through the first end 1c of gas-liquid separator 11, enter compressor 1 by second end of gas-liquid separator 11.Simultaneously, lubricating oil enters commutator 4 by the first opening 2d and the cross valve 3 of oil eliminator 2, enter described at least one indoor set by commutator 4, second valve 5 and the 3rd valve 6, after passing through described at least one indoor set, can flow through the 4th valve 7 and cross valve 3, through the first end 1c of gas-liquid separator 11, enter compressor 1 by second end of gas-liquid separator 11.It so is the cyclic process of refrigerant and lubricating oil in the process of refrigerastion.
Wherein, in the process of heating, refrigerant enters described at least one indoor set by the second opening 2b, cross valve 3, the 4th valve 7 of oil eliminator 2, after passing through described at least one indoor set, refrigerant continues by the 3rd valve 6, second valve 5, commutator 4, cross valve 3, through the first end 1c of gas-liquid separator 11, enter compressor 1 by second end of gas-liquid separator 11.Simultaneously, lubricating oil enters described at least one indoor set by the first opening 2d, cross valve 3 and the 4th valve 7 of oil eliminator 2, after passing through described at least one indoor set, refrigerant continues by the 3rd valve 6, second valve 5, commutator 4, cross valve 3, through the first end 1c of gas-liquid separator 11, enter compressor 1 by second end of gas-liquid separator 11.So for heating the cyclic process of refrigerant and lubricating oil in the process.
In the embodiment of the invention, the 3rd valve 6 and the 4th valve 7 can be hand stop valves.
Referring to Fig. 2, can also comprise temperature-detecting device 9 in the described oil balancing device in the embodiment of the invention, temperature-detecting device 9 can be arranged between the first end 1c of described first end of throttling arrangement 12 and gas-liquid separator 11, can obtain first temperature value for the temperature that characterizes lubricating oil by throttling arrangement 12 and/or refrigerant by temperature-detecting device 9.Wherein, when described first temperature value during less than the first preset temperature threshold value, show that described i off-premises station is in the duty that lacks lubricating oil, when described first temperature value during greater than the second preset temperature threshold value, show that described i off-premises station is in the duty of lubricating oil redundancy.Wherein, the described first preset temperature threshold value can equal the described second preset temperature threshold value, and perhaps the described first preset temperature threshold value also can be not equal to the described second preset temperature threshold value.
Preferable, the described first preset temperature threshold value can be upper extreme point with the described second preset temperature threshold value less than the described second preset temperature threshold value, is lower extreme point with the described first preset temperature threshold value, can form a preset temperature threshold range.
If described first temperature value is positioned at described preset temperature threshold range, show that then the lubricating oil in described i the off-premises station is an amount of, neither too much or too little.If described first temperature value is greater than the maximum of described preset temperature threshold range, be that described first temperature value is greater than the described second preset temperature threshold value, can show that then described i off-premises station is in the duty of lubricating oil redundancy, if described first temperature value is less than the minimum of a value of described preset temperature threshold range, be described first temperature value less than the first preset temperature threshold value, can show that then described i off-premises station is in the duty that lacks lubricating oil.
As can be seen from Figure 2, be provided with connecting duct between the first end 1c of throttling arrangement 12 and gas-liquid separator 11, temperature-detecting device 9 can be arranged at the surface of described connecting duct.In the embodiment of the invention, temperature-detecting device 9 can be temperature sensor, perhaps also can be other devices with temperature detecting function.
Wherein, in specific implementation process, described temperature sensor for example is: infrared temperature sensor, analog temperature sensor, acoustics temperature sensor etc., in specific implementation process, can be based on different operation environments, adopt different temperature sensors to detect described first temperature value, to this application no longer in detail for example and be not restricted.
Wherein, generally, the gas by described connecting duct also comprises refrigerant gas except lubricating oil.Wherein, if the lubricating oil that comprises in the gas is more, then the temperature on described connecting duct surface can be higher, and if the refrigerant gas that comprises in the gas is more, then the temperature on described connecting duct surface can be lower.
So, a table of comparisons of one first temperature value and lubricating oil content can be set in described oil balancing device inside, after detecting described first temperature value by described temperature sensor, just can determine the content of described i the corresponding lubricating oil of off-premises station by this table of comparisons.Certainly, also can a preset temperature threshold range directly be set as in the embodiment of the invention, after detecting first temperature value, just and this preset temperature threshold range compare, thereby the lubricating oil content situation in definite described i off-premises station.
As can be seen from Figure 2, between throttling arrangement 12 and oil eliminator 2, shown in Fig. 2 is between throttling arrangement 12 and filter, can also be provided with cooling device 10, refrigerant and/or the lubricating oil of deriving from oil eliminator 2 can cool off at cooling device 10, flow throttling device 12 again after the cooling.
Referring to Fig. 3, the embodiment of the invention provides a kind of air-conditioning system, can comprise in the described air-conditioning system: M off-premises station 301, at least one indoor set 302 and described oil balancing device.Wherein M is positive integer.Wherein, the described oil balancing device in the embodiment of the invention and the described oil balancing device among Fig. 2 embodiment can be same devices.
Described oil balancing device can be arranged in i the off-premises station in the described M off-premises station, and described oil balancing device specifically can comprise: oil eliminator 2; The first opening 2d is arranged at the side of described oil eliminator 2, and the height of the bottom of the described oil eliminator 2 of described first opening 2d distance is first height; First valve 8 comprises first end and second end, and wherein, described first end links to each other with the described first opening 2d, and N off-premises station 301 in described second end and the described M off-premises station 301 except described i off-premises station is connected, and N is the positive integer that is not more than M-1; Wherein, when the height of the lubricating oil in the described oil eliminator 2 is higher than described first height, by described first valve 8 parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station 301 in the described N off-premises station 301.
In the embodiment of the invention, oil eliminator 2 can also comprise the second opening 2b, the refrigerant in the described oil eliminator 2 can be imported described air-conditioning system by the described second opening 2b.
In the embodiment of the invention, described oil balancing device can also comprise:
Wherein, when the height of the lubricating oil in the described compressor 1 was higher than described second height, the lubricating oil in the described compressor 1 can enter described oil eliminator 2 by described the 3rd opening 1a and/or described the 4th opening 1b.
In the embodiment of the invention, described oil balancing device can also comprise:
Gas-liquid separator 11, the first end 1c of described gas-liquid separator 11 is connected in described oil eliminator 2 and described i off-premises station by described cross valve 3, and second end of described gas-liquid separator 11 is connected in described compressor 1.
In the embodiment of the invention, described oil balancing device can also comprise:
Throttling arrangement 12, first end of described throttling arrangement 12 is connected between described gas-liquid separator 11 and the described cross valve 3, second end of described throttling arrangement 12 is connected in described oil eliminator 2, wherein, can control lubricating oil and refrigerant from the speed of the described gas-liquid separator 11 of described oil eliminator 2 guiding by described throttling arrangement 12.
Wherein, only show 3 off- premises stations 301 and 3 indoor sets 302 among Fig. 3; but Fig. 3 only is used for explaining the present invention; and can not be used for restriction the present invention; as long as the quantity of off-premises station 301 is that the quantity of positive integer, indoor set 302 is positive integer in the described air-conditioning system, described air-conditioning system is namely within protection scope of the present invention.
Referring to Fig. 4, in the embodiment of the invention, described oil balancing device can also comprise:
Temperature-detecting device 9, be arranged between the described first end 1c of described first end of described throttling arrangement 12 and described gas-liquid separator 11, can obtain first temperature value for the temperature that characterizes lubricating oil by described throttling arrangement 12 and/or refrigerant by described temperature-detecting device 9. wherein, when described first temperature value during less than the first preset temperature threshold value, show that described i off-premises station is in the duty that lacks lubricating oil, when described first temperature value during greater than the second preset temperature threshold value, show that described i off-premises station is in the duty of lubricating oil redundancy.
Only show 3 off- premises stations 301 and 3 indoor sets 302 among Fig. 4; but Fig. 4 only is used for explaining the present invention; and can not be used for restriction the present invention; as long as the quantity of off-premises station 301 is that the quantity of positive integer, indoor set 302 is positive integer in the described air-conditioning system, described air-conditioning system is namely within protection scope of the present invention.
Oil balancing device in the embodiment of the invention can be applied in the air-conditioning system, can comprise M off-premises station 301 in the described air-conditioning system, described oil balancing device can be arranged in i the off-premises station in the described M off-premises station 301, M is positive integer, i is the arbitrary integer in 1 to M, and described oil balancing device can comprise: oil eliminator 2; The first opening 2d is arranged at the side of described oil eliminator 2, and the height of the bottom of the described oil eliminator 2 of described first opening 2d distance is first height; First valve 8 comprises first end and second end, and wherein, described first end links to each other with the described first opening 2d, and N off-premises station 301 in described second end and the described M off-premises station 301 except described i off-premises station is connected, and N is the positive integer that is not more than M-1; Wherein, when the height of the lubricating oil in the described oil eliminator 2 is higher than described first height, by described first valve 8 parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station 301 in the described N off-premises station 301.
In the embodiment of the invention, if it is very few that described i off-premises station is in lubricating oil, the duty that namely lacks lubricating oil, described i off-premises station can receive the lubricating oil of discharging except other one or more off-premises stations of described i off-premises station by in the described M off-premises station, described i off-premises station is when receiving the lubricating oil of other off-premises stations discharges, lubricating oil can enter gas-liquid separator 11 by second valve 5, commutator 4 and cross valve 3, thereby enters compressor 1 by gas-liquid separator 11.
Preferable, if be provided with described oil balancing device in each off-premises station in the described M off-premises station, then when described i off-premises station is in the duty that lacks lubricating oil, the off-premises station that is in the duty of lubricating oil redundancy in other off-premises stations in the described M off-premises station except described i off-premises station can be opened first valve 8, unnecessary lubricating oil is discharged in the circulatory system of described air-conditioning system by first valve 8, then described i off-premises station can receive the lubricating oil of being discharged by other off-premises stations, the lubricating oil between each off-premises station reaches poised state in the described air-conditioning system thereby can make, and guarantees the normal operation of each off-premises station.
In the embodiment of the invention, include described first valve 8 in the described oil balancing device, lubricating oil in described i off-premises station more for a long time, can open described first valve 8, unnecessary lubricating oil is discharged, receive use for other off-premises stations 301 that lack lubricating oil, if and the lubricating oil in each off-premises station 301 is all just in time balanced, even perhaps the lubricating oil in described i the off-premises station is more, but a described N off-premises station 301 does not all lack lubricating oil, then can close described first valve 8, can not make lubricating oil in described i the off-premises station import the circulatory system of described air-conditioning system, can effectively guarantee the performance of described air-conditioning system like this, avoid because of the more operate as normal that has influence on whole air-conditioning system of lubricating oil in the circulatory system.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. an oil balancing device is applied in the air-conditioning system, comprises M off-premises station in the described air-conditioning system, described oil balancing device is arranged in i the off-premises station in the described M off-premises station, and M is positive integer, and i is arbitrary integer in 1 to M, it is characterized in that described oil balancing device comprises:
Oil eliminator;
First opening is arranged at the side of described oil eliminator, and the height of the bottom of the described oil eliminator of described first extended distance is first height;
First valve comprises first end and second end, and wherein, described first end links to each other with described first opening, and N off-premises station in described second end and the described M off-premises station except described i off-premises station is connected, and N is the positive integer that is not more than M-1;
Wherein, when the height of the lubricating oil in the described oil eliminator is higher than described first height, by described first valve parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station in the described N off-premises station.
2. oil balancing device as claimed in claim 1 is characterized in that, described oil eliminator also comprises second opening, the refrigerant in the described oil eliminator can be imported described air-conditioning system by described second opening.
3. oil balancing device as claimed in claim 2 is characterized in that, described oil balancing device also comprises:
Compressor, described compressor are provided with the 3rd opening and the 4th opening, and described the 3rd opening all links to each other with described oil eliminator by conduit with described the 4th opening, and the height of the bottom of the described compressor of described the 4th extended distance is second height;
Described oil eliminator also comprises: the 5th opening, and described the 5th opening is connected with described the 4th opening with described the 3rd opening on the described compressor by conduit;
Wherein, when the height of the lubricating oil in the described compressor was higher than described second height, the lubricating oil in the described compressor can enter described oil eliminator by described the 3rd opening and/or described the 4th opening.
4. as each described oil balancing device of claim 1-3, it is characterized in that described oil balancing device also comprises:
Cross valve is connected in described i off-premises station by described cross valve with described oil eliminator;
Gas-liquid separator, first end of described gas-liquid separator is connected in described oil eliminator and described i off-premises station by described cross valve, and second end of described gas-liquid separator is connected in described compressor.
5. oil balancing device as claimed in claim 4 is characterized in that, described oil balancing device also comprises:
Throttling arrangement, first end of described throttling arrangement is connected between described gas-liquid separator and the described cross valve, second end of described throttling arrangement is connected in described oil eliminator, wherein, can control lubricating oil and refrigerant from the lead speed of described gas-liquid separator of described oil eliminator by described throttling arrangement.
6. oil balancing device as claimed in claim 5 is characterized in that, described oil balancing device also comprises:
Temperature-detecting device, be arranged between described first end of described first end of described throttling arrangement and described gas-liquid separator, can obtain first temperature value for the temperature that characterizes lubricating oil by described throttling arrangement and/or refrigerant by described temperature-detecting device; Wherein, when described first temperature value during less than the first preset temperature threshold value, show that described i off-premises station is in the duty that lacks lubricating oil, when described first temperature value during greater than the second preset temperature threshold value, show that described i off-premises station is in the duty of lubricating oil redundancy.
7. an air-conditioning system is characterized in that, comprising:
M off-premises station, wherein, described M is positive integer;
At least one indoor set;
Be arranged at the oil balancing device in i the off-premises station in the described M off-premises station, described oil balancing device specifically comprises: oil eliminator; First opening is arranged at the side of described oil eliminator, and the height of the bottom of the described oil eliminator of described first extended distance is first height; First valve comprises first end and second end, and wherein, described first end links to each other with described first opening, and N off-premises station in described second end and the described M off-premises station except described i off-premises station is connected, and N is the positive integer that is not more than M-1; Wherein, when the height of the lubricating oil in the described oil eliminator is higher than described first height, by described first valve parts of lubricating oil that is higher than described first height in the described lubricating oil is imported at least one off-premises station in the described N off-premises station.
8. air-conditioning system as claimed in claim 7 is characterized in that, described oil eliminator also comprises second opening, the refrigerant in the described oil eliminator can be imported described air-conditioning system by described second opening.
9. air-conditioning system as claimed in claim 8 is characterized in that, described oil balancing device also comprises:
Compressor, described compressor are provided with the 3rd opening and the 4th opening, and described the 3rd opening all links to each other with described oil eliminator by conduit with described the 4th opening, and the height of the bottom of the described compressor of described the 4th extended distance is second height;
Described oil eliminator also comprises: the 5th opening, and described the 5th opening is connected with described the 4th opening with described the 3rd opening on the described compressor by conduit;
Wherein, when the height of the lubricating oil in the described compressor was higher than described second height, the lubricating oil in the described compressor can enter described oil eliminator by described the 3rd opening and/or described the 4th opening.
10. as the described air-conditioning system of the arbitrary claim of claim 7-9, it is characterized in that described oil balancing device also comprises:
Cross valve is connected in described i off-premises station by described cross valve with described oil eliminator;
Gas-liquid separator, first end of described gas-liquid separator is connected in described oil eliminator and described i off-premises station by described cross valve, and second end of described gas-liquid separator is connected in described compressor.
11. air-conditioning system as claimed in claim 10 is characterized in that, described oil balancing device also comprises:
Throttling arrangement, first end of described throttling arrangement is connected between described gas-liquid separator and the described cross valve, second end of described throttling arrangement is connected in described oil eliminator, wherein, can control lubricating oil and refrigerant from the lead speed of described gas-liquid separator of described oil eliminator by described throttling arrangement.
12. air-conditioning system as claimed in claim 11 is characterized in that, described oil balancing device also comprises:
Temperature-detecting device, be arranged between described first end of described first end of described throttling arrangement and described gas-liquid separator, can obtain first temperature value for the temperature that characterizes lubricating oil by described throttling arrangement and/or refrigerant by described temperature-detecting device; Wherein, when described first temperature value during less than the first preset temperature threshold value, show that described i off-premises station is in the duty that lacks lubricating oil, when described first temperature value during greater than the second preset temperature threshold value, show that described i off-premises station is in the duty of lubricating oil redundancy.
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| CN201310190471.9A CN103277940B (en) | 2013-05-21 | 2013-05-21 | A kind of oil balancing device and air-conditioning system |
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| CN201310190471.9A CN103277940B (en) | 2013-05-21 | 2013-05-21 | A kind of oil balancing device and air-conditioning system |
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| CN103277940B CN103277940B (en) | 2016-04-13 |
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| WO2017036230A1 (en) * | 2015-09-01 | 2017-03-09 | 珠海格力电器股份有限公司 | Compressor module, multi-module unit and oil-balancing control method for multi-module unit |
| CN108072204A (en) * | 2017-12-13 | 2018-05-25 | 宁波奥克斯电气股份有限公司 | A kind of multi-joint machine oil balance control method and device |
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| CN108072204A (en) * | 2017-12-13 | 2018-05-25 | 宁波奥克斯电气股份有限公司 | A kind of multi-joint machine oil balance control method and device |
| CN108072204B (en) * | 2017-12-13 | 2020-07-03 | 宁波奥克斯电气股份有限公司 | Multi-connected engine oil balance control method and device |
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|---|---|
| CN103277940B (en) | 2016-04-13 |
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