CN110630493A - Pump for conveying refrigerant - Google Patents
Pump for conveying refrigerant Download PDFInfo
- Publication number
- CN110630493A CN110630493A CN201911010905.6A CN201911010905A CN110630493A CN 110630493 A CN110630493 A CN 110630493A CN 201911010905 A CN201911010905 A CN 201911010905A CN 110630493 A CN110630493 A CN 110630493A
- Authority
- CN
- China
- Prior art keywords
- pump
- rotor
- refrigerant
- motor
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000009347 mechanical transmission Effects 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 6
- 239000002966 varnish Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a pump for conveying a refrigerant, which comprises a pump shell, wherein a liquid inlet and a liquid outlet are formed in the bottom of the pump shell, a junction box is arranged at the top of the pump shell, an electromechanical integrated component is arranged in the pump shell and comprises a motor driving unit and a mechanical transmission unit, the motor driving unit comprises a coil, a motor stator and a motor rotor, the coil and the motor stator are fixedly connected with the pump shell respectively, the motor rotor is arranged in the motor stator in a penetrating manner, the mechanical transmission unit comprises a pump rotor and a mounting plate arranged at the bottom of the pump shell, the pump rotor is arranged on the mounting plate, and the pump rotor is in rotating fit with the mounting plate through a; the pump rotor comprises a pump shaft, an inner rotor and an outer rotor, the pump shaft is fixedly connected with the motor rotor, the inner rotor is sleeved on the pump shaft and fixedly connected with the pump shaft, and the outer rotor is sleeved on the inner rotor. The pump for conveying the refrigerant has high lift and stable operation, improves the safety and reliability of conveying the refrigerant, and avoids the occurrence of cavitation.
Description
Technical Field
The invention relates to the technical field of fluid conveying machinery, in particular to a pump for conveying a refrigerant.
Background
Because of the characteristics of the refrigerant, when the temperature and the pressure of the refrigerant change, the refrigerant correspondingly changes phase, and a gas-liquid coexistence phenomenon exists, a compressor is generally adopted as a power device for conveying the refrigerant in the traditional method, but the refrigerant conveyed by the compressor is a vapor refrigerant, as is well known, the efficiency of conveying the liquid refrigerant by a refrigerant pump is higher than that of conveying the vapor refrigerant by the compressor, and the power of the refrigerant pump is only 1/10 of the power of the compressor.
Most of the existing pumps for conveying the refrigerant are centrifugal pumps or gear pumps. The centrifugal pump has the defects of large volume, thin impeller, low lift, easy cavitation, short service life of a bearing and the like caused by axial force generated by high-speed operation; the gear pump has a plurality of fixed sealed working cavities and has the defects of unbalanced radial force, large flow pulsation, high noise, low efficiency and the like.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a pump which is high in lift and stable in operation and is used for conveying a refrigerant, so that the safety and the reliability of conveying the refrigerant are improved, and the cavitation phenomenon is avoided.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a pump for conveying a refrigerant, which comprises a pump shell, wherein a liquid inlet and a liquid outlet are formed in the bottom of the pump shell, a junction box is arranged at the top of the pump shell, an electromechanical integrated component is arranged in the pump shell and comprises a motor driving unit and a mechanical transmission unit, the motor driving unit comprises a coil, a motor stator and a motor rotor, the coil and the motor stator are fixedly connected with the pump shell respectively, the motor rotor is arranged in the motor stator in a penetrating manner, the mechanical transmission unit comprises a pump rotor and a mounting plate arranged at the bottom of the pump shell, the pump rotor is arranged on the mounting plate, and the pump rotor is in rotating fit with the mounting plate through a bearing; the pump rotor includes pump shaft, inner rotor and outer rotor, the pump shaft with electric motor rotor links firmly, the inner rotor cover is established on the pump shaft and with the pump shaft links firmly, the outer rotor cover is established on the inner rotor, the inner rotor with the outer rotor is eccentric, the inner rotor can with the outer rotor meshing, be provided with first joining in marriage chute and second joining in marriage chute in the pump casing, the inlet with first joining in marriage chute and communicate with each other, the liquid outlet with second joining in marriage chute and communicate with each other.
Preferably, the pump rotor is in rotational fit with the pump housing through a main bearing, the pump rotor is in rotational fit with the mounting plate through a secondary bearing, a gap exists between the main bearing and the secondary bearing, and the inner rotor and the outer rotor are both located in the gap.
Preferably, the material of the primary bearing and the secondary bearing is graphite.
Preferably, the bottom of pump shaft is connected with a bent axle, the bent axle with mounting panel normal running fit, the inner rotor cover is established on the bent axle, the bottom of bent axle runs through to the bottom of auxiliary bearing.
Preferably, a balance weight is disposed between the pump shaft and the motor rotor, and the balance weight is used for balancing the eccentricity of the crankshaft.
Preferably, the impregnating varnish of the coil adopts F-grade solvent-free fluorine-resistant insulating varnish.
Preferably, the pump casing adopts totally closed welding to form, and the material is the steel, the bottom of pump casing is provided with the installation base, be provided with 3 bolt holes on the installation base.
Compared with the prior art, the pump for conveying the refrigerant has the following technical effects:
the pump for conveying the refrigerant has high lift and stable operation, improves the safety and reliability of conveying the refrigerant, and avoids the occurrence of cavitation. The pump rotor in the pump for conveying the refrigerant adopts an inner rotor and an outer rotor design, the eccentricity of the inner rotor and the outer rotor is only 2.5mm, the rotary design has high lift, stable operation and no flow pulsation phenomenon, and can prevent cavitation erosion. Meanwhile, the pump shell is welded in a fully-closed mode, leakage risks do not exist, the electromechanical integrated component is sealed in the pump shell, stability and safety of a pump for conveying refrigerants are greatly improved, the size and weight of the pump for conveying the refrigerants are reduced, and cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a pump for delivering refrigerant according to the present invention;
FIG. 2 is a schematic cross-sectional view of a pump for delivering a refrigerant according to the present invention;
FIG. 3 is a schematic view of a rotor of the pump for transferring refrigerant according to the present invention;
wherein: 1-junction box, 2-coil, 3-motor rotor, 4-motor stator, 6-balance block, 7-main bearing, 8-pump rotor, 9-liquid inlet, 10-auxiliary bearing, 11-crankshaft, 12-liquid outlet, 13-pump shell, 14-electromechanical integrated component, 15-motor driving unit, 16-mechanical transmission unit, 17-mounting plate, 18-mounting base, 81-outer rotor, 82-inner rotor, 83-pump shaft and 84-pump pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to solve the problems in the prior art and provide a pump which is high in lift and stable in operation and is used for conveying a refrigerant, so that the safety and the reliability of conveying the refrigerant are improved, and the cavitation phenomenon is avoided.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-3: the embodiment provides a pump for conveying a refrigerant, which comprises a pump shell 13, wherein a liquid inlet 9 and a liquid outlet 12 are arranged at the bottom of the pump shell 13, a junction box 1 is arranged at the top of the pump shell 13, an electromechanical integrated component 14 is arranged inside the pump shell 13, the electromechanical integrated component 14 comprises a motor driving unit 15 and a mechanical transmission unit 16, the motor driving unit 15 comprises a coil 2, a motor stator 4 and a motor rotor 3, the coil 2 and the motor stator 4 are fixedly connected with the pump shell 13 respectively, the motor rotor 3 is arranged in the motor stator 4 in a penetrating manner, the mechanical transmission unit 16 comprises a pump rotor 8 and a mounting plate 17 arranged at the bottom of the pump shell 13, the pump rotor 8 is arranged on the mounting plate 17, and the pump rotor 8 is in running fit with the; the pump rotor 8 comprises a pump shaft 83, an inner rotor 82, a pump pin 84 and an outer rotor 81, the pump shaft 83 is fixedly connected with the motor rotor 3, the inner rotor 82 is sleeved on the pump shaft 83 and fixedly connected with the pump shaft 83, the outer rotor 81 is sleeved on the inner rotor 82, the inner rotor 82 is eccentric with the outer rotor 81, the inner rotor 82 can be meshed with the outer rotor 81, a first distributing groove and a second distributing groove are arranged in the pump shell 13, the liquid inlet 9 is communicated with the first distributing groove, and the liquid outlet 12 is communicated with the second distributing groove. The inner rotor 82 is rotated clockwise by the pump shaft 83. The inner rotor 82 engages the outer rotor to rotate the outer rotor clockwise. The inner rotor 82 and the outer rotor 81 are eccentric, the eccentricity is 2.5mm, the volume between two adjacent teeth on the right half part of the pump rotor 8 is increased from small to large in movement to form vacuum, and refrigerant is sucked into the pump from the liquid inlet 9 through the right flow distribution groove under the original pressure action of the system. When the two teeth are communicated with the left flow distribution groove, the volume between the teeth is reduced from large to small, and the refrigerant is pressed out of the liquid outlet 12, so that the refrigerant is conveyed.
The pump rotor 8 is in running fit with the pump shell 13 through the main bearing 7, the pump rotor 8 is in running fit with the mounting plate 17 through the auxiliary bearing 10, a gap exists between the main bearing 7 and the auxiliary bearing 10, and the inner rotor 82 and the outer rotor 81 are both positioned in the gap; the bottom of the pump shaft 83 is connected with a crankshaft 11, the crankshaft 11 is in running fit with the mounting plate 17, the inner rotor 82 is sleeved on the crankshaft 11, and the bottom end of the crankshaft 11 penetrates to the bottom of the auxiliary bearing 10. A balance weight 6 is provided between the pump shaft 83 and the motor rotor 3, and the balance weight 6 is used for balancing the eccentricity of the crankshaft 11. The counterbalance 6 is designed into a large rectangle and a small rectangle, so that the mass center of the counterbalance 6 can balance the eccentricity of the crankshaft 11.
The main bearing 7 and the secondary bearing 10 are made of graphite. The impregnating varnish of the coil 2 adopts F-level solvent-free fluorine-resistant insulating varnish. Pump housing 13 adopts totally closed welding to form, and the material is the steel, and pump housing 13's bottom is provided with installation base 18, is provided with 3 bolt holes on the installation base 18.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A pump for delivering a refrigerant, characterized by: the pump comprises a pump shell, wherein a liquid inlet and a liquid outlet are formed in the bottom of the pump shell, a junction box is arranged at the top of the pump shell, an electromechanical integrated component is arranged in the pump shell and comprises a motor driving unit and a mechanical transmission unit, the motor driving unit comprises a coil, a motor stator and a motor rotor, the coil and the motor stator are fixedly connected with the pump shell respectively, the motor rotor is arranged in the motor stator in a penetrating mode, the mechanical transmission unit comprises a pump rotor and a mounting plate arranged at the bottom of the pump shell, the pump rotor is mounted on the mounting plate, and the pump rotor is in rotating fit with the mounting plate through a bearing; the pump rotor includes pump shaft, inner rotor and outer rotor, the pump shaft with electric motor rotor links firmly, the inner rotor cover is established on the pump shaft and with the pump shaft links firmly, the outer rotor cover is established on the inner rotor, the inner rotor with the outer rotor is eccentric, the inner rotor can with the outer rotor meshing, be provided with first joining in marriage chute and second joining in marriage chute in the pump casing, the inlet with first joining in marriage chute and communicate with each other, the liquid outlet with second joining in marriage chute and communicate with each other.
2. A pump for transporting a refrigerant as set forth in claim 1, wherein: the pump rotor passes through the main bearing with pump housing normal running fit, the pump rotor pass through the auxiliary bearing with mounting panel normal running fit, the main bearing with there is the interval between the auxiliary bearing, the inner rotor with the outer rotor all is located in the interval.
3. A pump for transporting a refrigerant as set forth in claim 2, wherein: the main bearing and the auxiliary bearing are made of graphite.
4. A pump for transporting a refrigerant as set forth in claim 3, wherein: the bottom of pump shaft is connected with a bent axle, the bent axle with mounting panel normal running fit, the inner rotor cover is established on the bent axle, the bottom of bent axle runs through to the bottom of auxiliary bearing.
5. The pump for transporting refrigerant of claim 4, wherein: and a balance block is arranged between the pump shaft and the motor rotor and used for balancing the eccentricity of the crankshaft.
6. A pump for transporting a refrigerant as set forth in claim 1, wherein: the impregnating varnish of the coil adopts F-level solvent-free fluorine-resistant insulating varnish.
7. A pump for transporting a refrigerant as set forth in claim 1, wherein: the pump casing adopts totally closed welding to form, and the material is the steel, the bottom of pump casing is provided with the installation base, be provided with 3 bolt holes on the installation base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911010905.6A CN110630493A (en) | 2019-10-23 | 2019-10-23 | Pump for conveying refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911010905.6A CN110630493A (en) | 2019-10-23 | 2019-10-23 | Pump for conveying refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630493A true CN110630493A (en) | 2019-12-31 |
Family
ID=68977251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911010905.6A Pending CN110630493A (en) | 2019-10-23 | 2019-10-23 | Pump for conveying refrigerant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110630493A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283887A (en) * | 1989-04-24 | 1990-11-21 | Matsushita Electric Ind Co Ltd | Refrigerant pump |
| JPH02283886A (en) * | 1989-04-24 | 1990-11-21 | Matsushita Electric Ind Co Ltd | Refrigerant pump |
| CN1702327A (en) * | 2004-05-26 | 2005-11-30 | 株式会社日立制作所 | Motor-mounted internal gear pump and electronic device |
| CN101027488A (en) * | 2004-09-25 | 2007-08-29 | Lg电子株式会社 | Internal gear compressor |
| CN202187919U (en) * | 2011-07-25 | 2012-04-11 | 安徽美芝精密制造有限公司 | Rotary type compressor |
| CN103174641A (en) * | 2011-12-23 | 2013-06-26 | 吴昌龙 | Integrated fully-sealed type refrigeration gear pump |
| CN105587663A (en) * | 2015-12-29 | 2016-05-18 | 西安交通大学 | Vertical two-stage rotating compressor for refrigerator and work method of vertical two-stage rotating compressor |
| CN106246533A (en) * | 2015-06-09 | 2016-12-21 | 松下电器产业株式会社 | liquid pump and Rankine cycle device |
| CN106762609A (en) * | 2016-11-29 | 2017-05-31 | 西安航天动力研究所 | A kind of high-tension shielding Gerotor pump |
| CN107605728A (en) * | 2017-10-20 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure and there is its compressor |
| CN209308955U (en) * | 2017-12-21 | 2019-08-27 | 日本电产东测株式会社 | Electric oil pump |
| CN210829716U (en) * | 2019-10-23 | 2020-06-23 | 中普能效(北京)科技有限公司 | Pump for conveying refrigerant |
| KR102177671B1 (en) * | 2019-08-22 | 2020-11-16 | 영신정공주식회사 | Electronic Oil Pump |
-
2019
- 2019-10-23 CN CN201911010905.6A patent/CN110630493A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283886A (en) * | 1989-04-24 | 1990-11-21 | Matsushita Electric Ind Co Ltd | Refrigerant pump |
| JPH02283887A (en) * | 1989-04-24 | 1990-11-21 | Matsushita Electric Ind Co Ltd | Refrigerant pump |
| CN1702327A (en) * | 2004-05-26 | 2005-11-30 | 株式会社日立制作所 | Motor-mounted internal gear pump and electronic device |
| CN101027488A (en) * | 2004-09-25 | 2007-08-29 | Lg电子株式会社 | Internal gear compressor |
| CN202187919U (en) * | 2011-07-25 | 2012-04-11 | 安徽美芝精密制造有限公司 | Rotary type compressor |
| CN103174641A (en) * | 2011-12-23 | 2013-06-26 | 吴昌龙 | Integrated fully-sealed type refrigeration gear pump |
| CN106246533A (en) * | 2015-06-09 | 2016-12-21 | 松下电器产业株式会社 | liquid pump and Rankine cycle device |
| CN105587663A (en) * | 2015-12-29 | 2016-05-18 | 西安交通大学 | Vertical two-stage rotating compressor for refrigerator and work method of vertical two-stage rotating compressor |
| CN106762609A (en) * | 2016-11-29 | 2017-05-31 | 西安航天动力研究所 | A kind of high-tension shielding Gerotor pump |
| CN107605728A (en) * | 2017-10-20 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure and there is its compressor |
| CN209308955U (en) * | 2017-12-21 | 2019-08-27 | 日本电产东测株式会社 | Electric oil pump |
| KR102177671B1 (en) * | 2019-08-22 | 2020-11-16 | 영신정공주식회사 | Electronic Oil Pump |
| CN210829716U (en) * | 2019-10-23 | 2020-06-23 | 中普能效(北京)科技有限公司 | Pump for conveying refrigerant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191231 |
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| RJ01 | Rejection of invention patent application after publication |