CN205102468U - A return -air house steward for freezing parallel units is last - Google Patents
A return -air house steward for freezing parallel units is last Download PDFInfo
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- CN205102468U CN205102468U CN201520748523.4U CN201520748523U CN205102468U CN 205102468 U CN205102468 U CN 205102468U CN 201520748523 U CN201520748523 U CN 201520748523U CN 205102468 U CN205102468 U CN 205102468U
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- tube body
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Abstract
The utility model relates to a return -air house steward for freezing parallel units is last, connect several return -air single tube, lie in the terminal single -funnel tip of return -air including the muffler of connecting the evaporimeter, the reducing return bend of connecting the muffler, reducing return bend order in proper order and install the shutoff, its characterized in that, return -air single tube include return -air single tube body, and the both ends of return -air single tube body are equipped with connecting portion respectively, and the equipartition is equipped with a several return -air mouth of pipe on the axis direction of edge return -air single tube body, and return -air branch pipe and sealing connection are equipped with in a return -air mouth of pipe interpolation, the groove of slope is equipped with at the tip that inserts the intraoral return -air branch pipe of return -air branch pipe, the orificial sectional area sum of several return -air branch pipe is less than the sectional area of return -air single tube body. The utility model discloses the structure satisfies every return -air branch pipe divides equally and joins in marriage the same pressure and lubricating oil, even lubricating oil pressure power receives that dashing forward of pipe diameter is contracted or suddenly expands and wait the change in other pipelines, also can not influence the impartial of later stage and distribute to parallel units's working property, extension compressor life have been improved.
Description
Technical field
The utility model belongs to refrigeration system return-air manifold structure technical field, particularly relates to the return-air house steward on freezing Parallel sets.
Background technology
At present, now generally large-scale freezer is all with refrigeration compressor and is unified into refrigeration unit and improves the refrigeration of freezer.So-called refrigeration compressor parallel connection refers to that two or more refrigeration compressors shares the method for operation of air inlet pipe and muffler, parallel running is by changing the simple and effective change realizing refrigeration system cold of unlatching number of compressor, there is the advantages such as energy-conservation, easy to adjust, adopt parallel technology can expand the cold scope of certain refrigeration compressor operation simultaneously, but the problem that refrigeration compressor parallel running can bring refrigeration system oil return to worsen; The problem of oil return of Parallel sets is subject to the impact of two principal elements, one is system design considerations, the i.e. design of system layout and pipeline, two is chemical factors, namely the character of lubricating oil and refrigeration working medium mixture determines, to the refrigeration system determined, after the compatibility of cold-producing medium and lubricating oil is determined, the emphasis improving oil return should be placed in the design of system, namely wish to be optimized by system, to reduce until eliminate lubricating oil accumulation in pipeline, distribute unequal, that return pressure distributes inequality problem; The two equalizer line of employing common is at present in parallel or arrange the equalization problem that the thicker but mode of equalizer line reaches pressure in housing and lubricating oil; The mode of single equalizer line parallel connection is adopted in aforesaid way, also need increase air-flow distributor just can reach good oil return characteristic, above-mentioned two kinds of modes all have complex structure, the pressure loss is larger, distribute uneven problem, thus easily cause the load of Parallel sets different, reduce refrigeration, even occur the problem that compressor burns out.
Summary of the invention
The utility model for solve in known technology the technical problem that exists and provide that a kind of structure is simple, easy to install, pressure and distribution of lubrication oil is impartial, the service behaviour that improves Parallel sets, the return-air house steward on freezing Parallel sets that extends compressor service life.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:
A return-air house steward on freezing Parallel sets, comprise connect evaporimeter muffler, connect the reducing elbow of muffler, reducing elbow is linked in sequence several return-air single tube successively, the end of the return-air single tube that is positioned at end is provided with shutoff; It is characterized in that, described return-air single tube comprises return-air single tube body, the two ends of described return-air single tube body are respectively equipped with connecting portion, and prop up the mouth of pipe along the axis direction of return-air single tube body is laid with several return-air, described return-air props up mouth of pipe interpolation and return-air arm is housed and is tightly connected; The groove of inclination is provided with in the end of inserting the return-air arm that return-air props up in the mouth of pipe; The sectional area sum of described several return-air arm mouth of pipe is less than the sectional area of return-air single tube body.
The utility model can also adopt following technical measures:
Described in the junction of propping up the mouth of pipe at return-air arm and return-air, the excircle of return-air arm is set with protective sleeve, and the cylindrical of described protective sleeve and return-air single tube body welds together.
The angle of described groove is 30 ° ~ 60 °.
The advantage that the utility model has and good effect are: because the utility model adopts technique scheme, namely adopt and on the axis direction of return-air single tube body, be laid with several return-air prop up the mouth of pipe, plug-in mounting return-air arm on the mouth of pipe is propped up at return-air, in order to better realize shunting, be provided with the groove of inclination in the end of inserting the return-air arm that return-air props up in the mouth of pipe; The sectional area sum of several return-air arm mouth of pipe is less than the sectional area of return-air single tube body simultaneously, and then meet each return-air arm and be all assigned to identical pressure and lubricating oil, even if lubricating oil pressure is subject to the change such as sudden contraction or sudden expansion of caliber in other pipeline, the equalization that also can not affect the later stage is distributed, thus improve Parallel sets service behaviour, extend compressor service life.In addition, it is simple that the utility model also has structure, easy for installation, can according to advantages such as the number Optional assemblings of Parallel sets.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the side view of Fig. 1.
In figure: 1, muffler; 2, reducing elbow; 3, return-air single tube; 3-1, return-air single tube body; 3-10, connecting portion; 3-11, return-air prop up the mouth of pipe; 3-2, return-air arm; 3-20, groove; 4, shutoff; 5, protective sleeve.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 to Fig. 3, a return-air house steward on freezing Parallel sets, comprise connect evaporimeter muffler 1, connect the reducing elbow 2 of muffler, reducing elbow is linked in sequence several return-air single tube 3 successively, the end of the return-air single tube that is positioned at end is provided with shutoff 4; Described return-air single tube 3 comprises return-air single tube body 3-1, the two ends of described return-air single tube body are respectively equipped with connecting portion 3-10, prop up mouth of pipe 3-11 along the axis direction of return-air single tube body is laid with several return-air, described return-air props up mouth of pipe interpolation and return-air arm 3-2 is housed and is tightly connected; The groove 3-20 of inclination is provided with in the end of inserting the return-air arm that return-air props up in the mouth of pipe; In order to better realize the equilibrium of lubricating oil, the angle of described groove is 30 ° ~ 60 °; In the present embodiment preferably 45 °; The sectional area sum of described several return-air arm mouth of pipe is less than the sectional area of return-air single tube body.
The utility model can also adopt following technical measures:
In order to the pad protecting return-air to prop up the mouth of pipe snaps, described in the junction of propping up the mouth of pipe at return-air arm 3-2 and return-air, the excircle of return-air arm is set with protective sleeve 5, and the cylindrical of described protective sleeve and return-air single tube body welds together.
Adopt technique scheme, namely adopt and on the axis direction of return-air single tube body, be laid with several return-air prop up the mouth of pipe, propping up plug-in mounting return-air arm on the mouth of pipe at return-air, in order to better realize shunting, being provided with the groove of inclination in the end of inserting the return-air arm that return-air props up in the mouth of pipe; The sectional area sum of several return-air arm mouth of pipe is less than the sectional area of return-air single tube body simultaneously, and then meet each return-air arm and be all assigned to identical pressure and lubricating oil, even if lubricating oil pressure is subject to the change such as sudden contraction or sudden expansion of caliber in other pipeline, the equalization that also can not affect the later stage is distributed, thus improve Parallel sets service behaviour, extend compressor service life.In addition, it is simple that the utility model also has structure, easy for installation, can according to advantages such as the number Optional assemblings of Parallel sets.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (3)
1. the return-air house steward on freezing Parallel sets, comprise connect evaporimeter muffler, connect the reducing elbow of muffler, reducing elbow is linked in sequence several return-air single tube successively, the end of the return-air single tube that is positioned at end is provided with shutoff; It is characterized in that, described return-air single tube comprises return-air single tube body, the two ends of described return-air single tube body are respectively equipped with connecting portion, and prop up the mouth of pipe along the axis direction of return-air single tube body is laid with several return-air, described return-air props up mouth of pipe interpolation and return-air arm is housed and is tightly connected; The groove of inclination is provided with in the end of inserting the return-air arm that return-air props up in the mouth of pipe; The sectional area sum of described several return-air arm mouth of pipe is less than the sectional area of return-air single tube body.
2. the return-air house steward on freezing Parallel sets according to claim 1; it is characterized in that: described in the junction of propping up the mouth of pipe at return-air arm and return-air, the excircle of return-air arm is set with protective sleeve, and the cylindrical of described protective sleeve and return-air single tube body welds together.
3. the return-air house steward on freezing Parallel sets according to claim 1, is characterized in that: the angle of described groove is 30 ° ~ 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520748523.4U CN205102468U (en) | 2015-09-23 | 2015-09-23 | A return -air house steward for freezing parallel units is last |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520748523.4U CN205102468U (en) | 2015-09-23 | 2015-09-23 | A return -air house steward for freezing parallel units is last |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205102468U true CN205102468U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520748523.4U Active CN205102468U (en) | 2015-09-23 | 2015-09-23 | A return -air house steward for freezing parallel units is last |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205102468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747501A (en) * | 2019-10-31 | 2021-05-04 | 广东美的白色家电技术创新中心有限公司 | Compressor assembly, heat exchange system and electrical equipment |
-
2015
- 2015-09-23 CN CN201520748523.4U patent/CN205102468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747501A (en) * | 2019-10-31 | 2021-05-04 | 广东美的白色家电技术创新中心有限公司 | Compressor assembly, heat exchange system and electrical equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |