CN217520095U - Oil return device of negative pressure type heat recovery multi-connected air conditioning unit - Google Patents
Oil return device of negative pressure type heat recovery multi-connected air conditioning unit Download PDFInfo
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- CN217520095U CN217520095U CN202221532024.8U CN202221532024U CN217520095U CN 217520095 U CN217520095 U CN 217520095U CN 202221532024 U CN202221532024 U CN 202221532024U CN 217520095 U CN217520095 U CN 217520095U
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Abstract
The utility model discloses a negative pressure formula heat recovery multiple air conditioning unit oil return device, including oil separator and two at least compressors, the compressor is through first throttle capillary intercommunication oil catcher, and the oil catcher will mix the medium and carry to oil separator, and the oil separator is connected with air outlet channel and oil outlet channel respectively, and oil outlet channel is connected with first tuner, and first tuner is connected with corresponding compressor through a plurality of oil pipeline, and oil pipeline is equipped with the negative pressure pump, and the negative pressure pump cooperatees the delivery capacity that realizes lubricating oil with the fluid flow rate of compressor, oil pipeline intercommunication has oil return line, oil return line is connected with first tuner through the second tuner. The arrangement of the first adapter and the negative pressure pump can realize accurate oil distribution, the negative pressure pump pumps oil through negative pressure, the problem of uneven oil pressure among compressors can be further reduced, the negative pressure pump can also be used as a one-way valve, and the problem of oil return is avoided.
Description
Technical Field
The utility model relates to an air conditioning technology field, in particular to negative pressure formula heat recovery multiple air conditioning unit oil return device.
Background
In the operation of the multi-split air-conditioning system, part of lubricating oil of the compressor can be discharged out of the compressor along with refrigerant gas and enter a condenser, a piping and an evaporator of the system, and the dynamic balance of the oil of the whole system can be maintained only if the discharged part of lubricating oil can be smoothly brought back to the compressor, otherwise, the compressor can be damaged due to oil shortage. The process of oil discharge to return to the compressor is called oil return.
The refrigerating gas is pressed out by the compressor along with the medium, and is deposited at the bottom of the liquid-gas separator after circulating in the air conditioning system. The oil return device is used for returning refrigerating fluid at the bottom of the liquid-gas separator to the compressor.
In the liquid return device of the liquid-gas separator of the existing air conditioner, lubricating oil is generally only filtered and then directly input into a compressor, when a multi-connected air conditioner unit runs in a part of units and the part of units stops running, part of the lubricating oil enters the stopped units, not only does not play a role of hole slip, but also has damage to the units, namely the lubricating oil is accumulated in the units, but no refrigerating liquid exists in the units, so that the problem that the pressure among the air conditioners is unbalanced when the multi-connected air conditioner unit is restarted or the problem that the flow channel resistance of the stopped air conditioner is large (the proportion of the refrigerating liquid is generally smaller than a preset value) is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a negative pressure formula heat recovery multiple air conditioning unit oil return device aims at effectively realizing lubricating oil allotment and return oil control between many air conditioner host computers through reasonable lubricating oil distribution, and simple structure, and stability is good.
In order to achieve the purpose, the utility model provides a negative pressure formula heat recovery multiple air conditioning unit oil return device, including oil separator and at least two compressors, its characterized in that, the compressor passes through first throttle capillary and communicates the oil catcher, the oil catcher carries mixed medium to the oil separator, the oil separator is connected with air outlet channel and oil outlet channel respectively, air outlet channel and oil outlet channel are used for exporting the high-pressure cooling gas and the lubricating oil after mixed medium separates respectively;
the oil outlet channel is connected with a first tuner, the first tuner is connected with the corresponding compressor through a plurality of oil pipelines, the oil pipelines are provided with negative pressure pumps, the negative pressure pumps are matched with the flow rate of the fluid of the compressor to realize the conveying capacity of lubricating oil, the oil pipelines are communicated with an oil return pipeline, and the oil return pipeline is connected with the first tuner through a second tuner.
The utility model discloses technical scheme's advantage:
1. in actual installation, the oil collector can mix the mixed medium recovered by the compressors through the first throttling capillary tube, then the mixed medium flows into the oil separator, and then the mixed medium is further separated, so that the problem of nonuniform oil distribution among the compressors is avoided (the problem of nonuniform density of lubricating oil of each part is avoided), and the problem of nonuniform oil pressure among the compressors is reduced;
2. the first adapter and the negative pressure pump are arranged to realize accurate oil distribution, the negative pressure pump pumps oil through negative pressure, the problem of uneven oil pressure among compressors can be further reduced, the negative pressure pump can also be used as a one-way valve, the problem of oil return is avoided, and meanwhile, when the compressors do not move, the negative pressure pump cannot be started (in another embodiment, the oil distribution can also be realized through electronic induction control);
3. when one compressor is not started, the negative pressure pump is not started, and meanwhile, lubricating oil output by the first tuner flows back to the first tuner through the oil return pipeline and the second tuner, so that the condition of lubricating oil waste is avoided, the efficiency of the compressor in common operation is improved, and the lubricating oil can be prevented from entering the compressor which does not work;
4. when the compressor is restarted, the compressor can be prevented from being damaged, and the oil pressure among the compressors is basically stable and consistent;
5. meanwhile, the whole volume of the air conditioning unit is more compact, and the occupation of space is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the multi-connected compressor of the present invention.
In the figure, 11 is an oil collector, 12 is an oil separator, 21 is a first throttling capillary tube, 22 is a second throttling capillary tube, 31 is an air outlet channel, 32 is an oil outlet channel, 41 is a first tuner, 42 is a second tuner, 5 is an oil pipeline, 51 is a first vertical part, 52 is a second vertical part, 53 is a transverse part, 61 is a compressor, 62 is a negative pressure pump, 7 is an oil return pipeline, and 8 is a filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion condition, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are also changed accordingly.
In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, the oil return device of the negative pressure type heat recovery multiple air conditioning unit comprises an oil separator 12 and at least two compressors 61, wherein the compressors 61 are communicated with an oil collector 11 through a first throttling capillary tube 21, the oil collector 11 conveys a mixed medium to the oil separator 12, the oil separator 12 is connected with an air outlet channel 31 and an oil outlet channel 32 respectively, and the air outlet channel 31 and the oil outlet channel 32 are used for outputting high-pressure cooling gas and lubricating oil after the mixed medium is separated respectively;
the oil outlet channel 32 is connected with a first tuner 41, the first tuner 41 is connected with the corresponding compressor 61 through a plurality of oil pipelines 5, the oil pipelines 5 are provided with negative pressure pumps 62, the negative pressure pumps 62 are matched with the flow rate of the fluid of the compressor 61 to realize the delivery capacity of the lubricating oil (when the rotating speed of the compressor 61 is increased, the corresponding flow rate of the negative pressure pumps 62 is increased), the oil pipelines 5 are communicated with an oil return pipeline 7, and the oil return pipeline 7 is connected with the first tuner 41 through a second tuner 42.
In actual installation, the oil collector 11 can mix the mixed medium recovered by the compressors 61 through the first throttling capillary tube 21, then the mixed medium flows into the oil separator 12, and then the mixed medium is further separated, so that the problem of nonuniform oil separation among the compressors 61 (the problem of nonuniform density of lubricating oil in each part) is avoided, and the problem of nonuniform oil pressure among the compressors 61 is reduced; the first adapter 41 and the negative pressure pump 62 are arranged to realize accurate oil distribution, the negative pressure pump 62 pumps oil through negative pressure, the problem of uneven oil pressure among the compressors 61 can be further reduced, the negative pressure pump 62 can also be used as a one-way valve, the problem of oil return is avoided, and meanwhile, when the compressors 61 do not move, the negative pressure pump 62 cannot be started (in another embodiment, the oil distribution can also be realized through electronic induction control); when one of the compressors 61 is not started, the negative pressure pump 62 is not started, and meanwhile, the lubricating oil output by the first tuner 41 flows back to the first tuner 41 through the oil return pipeline 7 and the second tuner 42, so that the condition of lubricating oil waste is avoided, the efficiency of the co-operation of the compressors 61 is improved, and the lubricating oil can be prevented from entering the compressor 61 which does not work; when restarting, the damage to the compressors 61 can be avoided, and the oil pressure is substantially constant among the compressors 61.
The first regulator is used for regulating the entering amount, the flow rate and the oil pressure of lubricating oil.
The embodiment of the utility model provides an in, be equipped with trunk line 9 between first tuner 41 and the oil pipeline 5, the trunk line is the heliciform setting, and the trunk line heliciform setting can increase the stroke length of lubricating oil, can increase corresponding resistance through extension trunk line 9's length and crooked setting, reduces high-pressure lubricating oil to pipeline, negative pressure pump 62 and compressor 61's influence, realizes the flexible oil absorption of negative pressure pump 62, can realize the flow size of more accurate lubricating oil.
In particular, the main conduit 9 is arranged horizontally to the ground.
Further, the oil return pipeline 7 is vertically arranged, and the bottom end of the oil return pipeline is lower than the height of the first tuner 41. Gravity oil return can be realized by vertically arranging the oil return pipeline 7, and the energy consumption is reduced.
In the embodiment of the present invention, the oil pipeline 5 includes a first vertical portion 51 communicated with the main pipeline, a second vertical portion 52 communicated with the compressor 61, and a transverse portion 53 provided between the first vertical portion 51 and the second vertical portion 52, and the negative pressure pump 62 is provided in the second vertical portion 52.
Specifically, the air outlet channel 31 is communicated with each compressor 61 through the second throttling capillary 22. The throttling capillary network plane radiation air-conditioning system generally adopts a small circulation large system mode, and adopts special solution as a medium, so that the system blockage can be avoided, the control is convenient, the more accurate control of the gas flow and the liquid flow is realized, and the problem of non-uniform gas flow pressure and liquid flow pressure is avoided.
In an embodiment, a filter 8 is disposed between the oil separator 12 and the first dispenser 41, so as to filter impurities in the lubricating oil and reduce the influence on the compressor 61.
In one embodiment, the oil return pipe 7 is disposed in an inclined manner, and when the compressor 61 does not work, the oil can automatically flow back to the second dispenser 42 by the self weight of the lubricating oil.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (8)
1. The utility model provides a negative pressure formula heat recovery multiple air conditioning unit oil returning device, includes oil separator and two at least compressors, its characterized in that:
the compressor is communicated with an oil collector through a first throttling capillary tube, the oil collector conveys the mixed medium to an oil separator, the oil separator is respectively connected with an air outlet channel and an oil outlet channel, and the air outlet channel and the oil outlet channel are respectively used for outputting high-pressure cooling gas and lubricating oil after the mixed medium is separated;
the oil outlet channel is connected with a first tuner, the first tuner is connected with the corresponding compressor through a plurality of oil pipelines, the oil pipelines are provided with negative pressure pumps, the negative pressure pumps are matched with the flow rate of the fluid of the compressor to realize the conveying capacity of lubricating oil, the oil pipelines are communicated with an oil return pipeline, and the oil return pipeline is connected with the first tuner through a second tuner.
2. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 1, characterized in that: be equipped with the trunk line between first tuner and the oil pipeline, the trunk line is the heliciform setting.
3. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 2, characterized in that: the main pipeline is horizontally arranged with the ground.
4. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 1, characterized in that: the oil return pipeline is vertically arranged and the bottom end of the oil return pipeline is lower than the height of the first tuner.
5. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 2, characterized in that: the oil pipeline includes the vertical portion of first vertical portion that is linked together with the trunk line, the vertical portion of second that is linked together with the compressor and locates the horizontal portion between the vertical portion of first vertical portion and second, the negative pressure pump sets up in the vertical portion of second.
6. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 2, characterized in that: and the air outlet channel is communicated with each compressor through a second throttling capillary tube.
7. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 1, characterized in that: a filter is arranged between the oil separator and the first dispenser.
8. The negative pressure type heat recovery multi-connected air conditioning unit oil return device of claim 2, characterized in that: the oil return pipeline is obliquely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221532024.8U CN217520095U (en) | 2022-06-16 | 2022-06-16 | Oil return device of negative pressure type heat recovery multi-connected air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221532024.8U CN217520095U (en) | 2022-06-16 | 2022-06-16 | Oil return device of negative pressure type heat recovery multi-connected air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217520095U true CN217520095U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221532024.8U Active CN217520095U (en) | 2022-06-16 | 2022-06-16 | Oil return device of negative pressure type heat recovery multi-connected air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217520095U (en) |
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2022
- 2022-06-16 CN CN202221532024.8U patent/CN217520095U/en active Active
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