CN210371178U - Gas inlet and outlet structure of Roots type hydrogen circulating pump - Google Patents
Gas inlet and outlet structure of Roots type hydrogen circulating pump Download PDFInfo
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- CN210371178U CN210371178U CN201921106010.8U CN201921106010U CN210371178U CN 210371178 U CN210371178 U CN 210371178U CN 201921106010 U CN201921106010 U CN 201921106010U CN 210371178 U CN210371178 U CN 210371178U
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Abstract
The utility model relates to a business turn over gas port structure of roots formula hydrogen circulating pump, include: the pump body is equipped with the rotor chamber in the pump body, and rotor intracavity is equipped with the initiative rotor and the driven rotor of mutually supporting, and initiative rotor and driven rotor are equipped with four roots's blade respectively, and the pump body is equipped with the gas outlet that is linked together with the rotor chamber, and initiative rotor and driven rotor are close to the gas outlet position and form the chamber of giving vent to anger with pump body inner wall, give vent to anger the chamber and include that the axial gives vent to anger portion and the radial portion of giving vent to anger, the corresponding. The utility model has the advantages of reasonable structural design, the air inlet is arranged along the axial air inlet end of the rotor, and the shape of the air inlet is designed according to the molded lines of the four Roots blades, so that the two rotors can obtain the best air inlet efficiency, and smooth air inlet is ensured; the air outlet is arranged at the radial position of the rotors and is arranged along the molded lines of the Roots blades of the two rotors, so that the air outlet just corresponds to the exhaust position of the separated Roots blades of the two rotors.
Description
Technical Field
The utility model relates to a business turn over gas port structure of roots formula hydrogen circulating pump.
Background
Hydrogen circulating pump among the prior art mainly uses in the fuel cell field, hydrogen circulating pump mainly includes claw formula hydrogen circulating pump and two kinds of models of roots formula hydrogen circulating pump at present, two kinds of hydrogen circulating pump's main difference lies in inside rotor structural style, wherein the inside rotor of roots formula hydrogen circulating pump is roots type blade structure, the roots blade quantity of the inside rotor of roots formula hydrogen circulating pump of present mainstream is two, but along with the rapid development in fuel cell field in recent years, the roots formula hydrogen circulating pump of two leaves receives the restriction of self rotor structure, it is lower to carry the efficiency of hydrogen, it is difficult to satisfy the great fuel cell system of hydrogen volume demand, therefore the inventor carries out the institutional advancement to claw formula roots hydrogen circulating pump, the blade quantity of inside rotor has been increased, the roots blade design of rotor is four according to the demand, but the air inlet and the gas outlet structure of current roots formula hydrogen circulating pump are not fit for the roots formula of four blades The hydrogen circulating pump can lead to the fact the hindrance to gaseous flow, influences business turn over gas efficiency, reduces the result of use of hydrogen circulating pump.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gas inlet and outlet structure of a Roots type hydrogen circulating pump, which has reasonable structural design, the gas inlet is arranged along the axial gas inlet end of a rotor, and the shape of the gas inlet is designed according to the molded lines of four Roots blades, so that two rotors can obtain the best gas inlet efficiency, and smooth gas inlet is ensured; the gas outlet sets up the radial position at the rotor to along the roots's of two rotors molded lines setting, make the gas outlet just in time correspond the exhaust position of the roots's of two rotors blade phase separation, and the shape of gas outlet carries out unique design according to roots's molded lines, ensures the smoothness and gives vent to anger, has solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: an inlet and outlet structure of a roots-type hydrogen circulation pump, comprising: the gas-discharging pump comprises a pump body, wherein a rotor cavity is arranged in the pump body, a driving rotor and a driven rotor which are matched with each other are arranged in the rotor cavity, the driving rotor and the driven rotor are respectively provided with four Roots blades, the pump body is provided with a gas outlet communicated with the rotor cavity, the positions, close to the gas outlet, of the driving rotor and the driven rotor form a gas outlet cavity with the inner wall of the pump body, the gas outlet cavity comprises an axial gas outlet part and a radial gas outlet part, and the radial gas outlet part is correspondingly communicated with the gas outlet;
the bearing end cover is connected with the pump body, two mounting grooves are formed in the position of the bearing end cover, bearings are arranged in the mounting grooves, and the two bearings are connected with rotating shafts of the driving rotor and the driven rotor; the bearing end cover is provided with an air inlet communicated with the rotor cavity, and the air inlet is arranged at the corresponding axial projection position between the inner wall of the rotor cavity and the mounting groove.
The bearing end cover is provided with a gas guide hole, the side wall of the bearing end cover connected with the sealing end cover is provided with a gas inlet groove, and the gas inlet groove and the gas inlet of the bearing end cover are correspondingly arranged so that the gas guide hole is communicated with the gas inlet.
Furthermore, a plurality of first reinforcing ribs are arranged on the surface of the pump body, and the first reinforcing ribs are arranged in a mutually crossed mode.
Furthermore, an air guide pipe is arranged at the air outlet of the pump body, the air guide pipe is arranged along the radial direction of the rotor cavity, and the air guide pipe is connected with the first reinforcing rib.
Furthermore, the sealing end cover is provided with a plurality of second reinforcing ribs which are mutually crossed, and the air guide port is connected with the second reinforcing ribs.
Furthermore, four roots blades on the surfaces of the driving rotor and the driven rotor are respectively provided with four gas path channels, the gas inlet is arranged corresponding to three gas path channels in a gas inlet state, and the gas outlet is arranged corresponding to the last gas path channel in a gas exhaust state.
Furthermore, a connecting rib is arranged at the position of the air inlet corresponding to the mounting groove.
Furthermore, the main body of the gas outlet is of a circular opening structure, a wind shielding part is arranged on the inner wall of the main body of the gas outlet, and the edge of the wind shielding part is arranged along the molded line of the Roots blade, so that the gas outlet position of the gas outlet separated from the Roots blade corresponds to the gas outlet position of the Roots blade.
Further, the gas conveyed to the gas outlet cavity by the driving rotor and the driven rotor is released outwards along the axial gas outlet part and the radial gas outlet part, and the gas is buffered by the axial gas outlet part and then released outwards along the radial gas outlet part through the gas outlet.
Furthermore, an air inlet cavity is formed between the driving rotor and the driven rotor and between the pump body and the air inlet, the axial profile of the air inlet cavity and the axial profile of the air inlet cavity are provided with mutually overlapped parts, and the axial profile of the air inlet cavity is larger than the profile of the air inlet.
The structure adopted by the utility model has the advantages that the structure design is reasonable, the air inlet is arranged along the axial air inlet end of the rotor, and the shape of the air inlet is designed according to the molded lines of the four Roots blades, so that the two rotors can obtain the best air inlet efficiency, and smooth air inlet is ensured; the gas outlet is arranged at the radial position of the rotor and is arranged along the molded lines of the Roots blades of the two rotors, so that the gas outlet just corresponds to the exhaust position of the phase separation of the Roots blades of the two rotors, and the shape of the gas outlet is uniquely designed according to the molded lines of the Roots blades, thereby ensuring smooth gas outlet.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the main explosion structure of the present invention.
Fig. 3 is a schematic side view of the present invention.
Fig. 4 is a schematic sectional view in the direction of a-a in fig. 3.
Fig. 5 is a schematic diagram of the local explosion structure of the present invention.
Fig. 6 is a schematic view of a partial structure of the present invention.
Fig. 7 is a schematic view of a partial three-dimensional structure of the present invention.
In the figure, 1, a pump body; 101. a rotor cavity; 2. a bearing end cap; 201. mounting grooves; 202. an air inlet; 3. a driving rotor; 4. a driven rotor; 5. an air outlet; 6. a bearing; 7. sealing the end cap; 701. an air guide port; 702. an air inlet groove; 8. a first reinforcing rib; 9. an air duct; 10. a second reinforcing rib; 11. connecting ribs; 12. a wind shield portion; 13. an air outlet cavity; 1301. an axial air outlet part; 1302. a radial air outlet part; 14. an air inlet cavity.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1-7, an air inlet and outlet structure of a roots-type hydrogen circulation pump comprises a pump body 1 and a bearing end cover 2, wherein a rotor cavity 101 is arranged in the pump body 1, a driving rotor 3 and a driven rotor 4 which are matched with each other are arranged in the rotor cavity 101, the driving rotor 3 and the driven rotor 4 are respectively provided with four roots blades, the pump body 1 is provided with an air outlet 5 communicated with the rotor cavity 101, the positions of the driving rotor 3 and the driven rotor 4, which are close to the air outlet 5, form an air outlet cavity 13 with the inner wall of the pump body 1, the air outlet cavity 13 comprises an axial air outlet part 1301 and a radial air outlet part 1302, and the radial air outlet part 1302; the bearing end cover 2 is connected with the pump body 1, two mounting grooves 201 are formed in the position of the bearing end cover 2, bearings 6 are arranged in the mounting grooves 201, and the two bearings 6 are connected with rotating shafts of the driving rotor 3 and the driven rotor 4; the bearing end cover 2 is provided with an air inlet 202 communicated with the rotor cavity 101, and the air inlet 202 is arranged at the corresponding axial projection position between the inner wall of the rotor cavity 101 and the mounting groove 201. When the air inlet structure is used, the air inlet 202 at the position of the bearing end cover 2 is arranged along the axial air inlet end of the rotor, and the shape of the air inlet 202 is designed according to the molded lines of the four Roots blades, so that the driving rotor 3 and the driven rotor 4 can obtain the optimal air inlet efficiency, and smooth air inlet is ensured; the gas outlet 5 is arranged at the radial position of the rotor and is arranged along the molded line of the Roots blades of the driving rotor 3 and the driven rotor 4, so that the gas outlet 5 just corresponds to the radial gas outlet part 1302 of the gas outlet cavity 13, one part of gas is directly discharged through the gas outlet 5 along the radial gas outlet part 1302, the other part of gas can firstly impact the position of the axial gas outlet part 1301, the axial gas outlet part 1301 can effectively buffer the gas, the buffered gas is released outwards along the gas outlet 5 through the radial gas outlet part 1302, and the shape of the gas outlet 5 is uniquely designed according to the molded line of the Roots blades, so that smooth gas outlet is ensured.
In a preferred embodiment, as shown in fig. 4, the air-guiding device comprises a sealing end cover 7 connected with a bearing end cover 2, the sealing end cover 7 is provided with an air guiding port 701, the side wall of the sealing end cover 7 connected with the bearing end cover 2 is provided with an air inlet groove 702, and the air inlet groove 702 is arranged corresponding to the air inlet 202 of the bearing end cover 2, so that the air guiding port 701 is communicated with the air inlet 202. The design of the sealing end cover 7 is to lock the bearing 6 of the bearing end cover 2 and protect the air inlet 202 structure of the bearing end cover 2; therefore, the sealing end cover 7 adopts a gas guide structure combining the gas guide port 701 and the gas inlet groove 702, so that the external gas can smoothly enter the rotor cavity 101 through the gas inlet 202 via the gas guide port 701 and the gas inlet groove 702, and the external gas can generate an acceleration effect in the process of entering the gas inlet groove 702 from the gas guide port 701, so that the gas can be promoted to enter the rotor cavity 101 via the gas inlet 202, and the gas compression is facilitated.
In a preferred embodiment, the surface of the pump body 1 is provided with a plurality of first reinforcing ribs 8, and the plurality of first reinforcing ribs 8 are arranged to intersect with each other. The design of the first reinforcing ribs 8 can increase the structural strength of the pump body 1.
In a preferred embodiment, the air outlet 5 of the pump body 1 is provided with an air duct 9, the air duct 9 is arranged along the radial direction of the rotor cavity 101, and the air duct 9 is connected with the first reinforcing rib 8. The design of the first reinforcing ribs 8 can increase the structural strength of the air guide tube 9.
In the preferred embodiment, the end cap 7 is provided with a plurality of second ribs 10 arranged to cross each other, and the air guide port 701 is connected to the second ribs 10. The design of the second reinforcing rib 10 can increase the structural strength of the sealing end cover 7 and the position of the air guide port 701.
In the preferred embodiment, four roots lobes on the surfaces of the driving rotor 3 and the driven rotor 4 are respectively formed with four air passage channels, the air inlet 202 is arranged corresponding to three air passage channels in the air inlet state, and the air outlet 5 is arranged corresponding to the last air passage channel in the air exhaust state. The unique arrangement of the gas inlet 202 and the gas outlet 5 enables the hydrogen circulation pump to obtain the best gas inlet efficiency and gas outlet efficiency.
In a preferred embodiment, the air inlet 202 is provided with a connection rib 11 at a position corresponding to the mounting groove 201. The setting of splice bar 11 can increase the structural strength of air inlet 202, because bearing housing 2 position is equipped with mounting groove 201 and bearing 6, can produce the effort to the structure of air inlet 202 position when the rotor rotates at a high speed, and the setting of splice bar 11 can form supporting role to mounting groove 201, improves bearing housing 2's bulk strength and stability.
In a preferred embodiment, the main body of the air outlet 5 is in a circular mouth structure, a wind shielding part 12 is arranged on the inner wall of the main body of the air outlet 5, and the edge of the wind shielding part 12 is arranged along the molded line of the Roots blade, so that the air outlet position of the air outlet 5 separated from the Roots blade corresponds to the air outlet position.
In a preferred embodiment, as shown in fig. 5 to 7, the gas delivered to the position of the gas outlet cavity 13 by the driving rotor 3 and the driven rotor 4 is discharged outwards along the axial gas outlet portion 1301 and the radial gas outlet portion 1302, and the axial gas outlet portion 1301 causes the gas to be buffered and then discharged outwards along the radial gas outlet portion 1302 through the gas outlet 5. The structure of the air outlet 5 formed by the axial air outlet part 1301 and the radial air outlet part 1302 has the best air outlet efficiency, and the air outlet efficiency of the hydrogen circulating pump is improved.
In the preferred embodiment, an intake chamber 14 is formed between the driving rotor 3 and the driven rotor 4 and the pump body 1 at a position corresponding to the intake port 202, the axial profile of the intake chamber 11 and the profile of the intake port 202 have portions that coincide with each other, and the axial profile of the intake chamber 14 is larger than the profile of the intake port 202. The formed air inlet chamber 14 can ensure the best air inlet efficiency of the driving rotor 3 and the driven rotor 4. The corresponding axial gas outlet portion 1301, radial gas outlet portion 1302 and gas inlet chamber 14 in the drawings are not specific structural features, and are therefore indicated by dashed lines in the drawings, which can be understood as flow channels or path spaces for gases.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. The utility model provides a business turn over gas port structure of roots formula hydrogen circulating pump which characterized in that includes:
the gas-discharging pump comprises a pump body, wherein a rotor cavity is arranged in the pump body, a driving rotor and a driven rotor which are matched with each other are arranged in the rotor cavity, the driving rotor and the driven rotor are respectively provided with four Roots blades, the pump body is provided with a gas outlet communicated with the rotor cavity, the positions, close to the gas outlet, of the driving rotor and the driven rotor form a gas outlet cavity with the inner wall of the pump body, the gas outlet cavity comprises an axial gas outlet part and a radial gas outlet part, and the radial gas outlet part is correspondingly communicated with the gas outlet;
the bearing end cover is connected with the pump body, two mounting grooves are formed in the position of the bearing end cover, bearings are arranged in the mounting grooves, and the two bearings are connected with rotating shafts of the driving rotor and the driven rotor; the bearing end cover is provided with an air inlet communicated with the rotor cavity, and the air inlet is arranged at the corresponding axial projection position between the inner wall of the rotor cavity and the mounting groove.
2. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 1, comprising a sealing end cap connected to the bearing end cap, wherein the sealing end cap is provided with a gas guide port, the side wall of the sealing end cap connected to the bearing end cap is provided with a gas inlet groove, and the gas inlet groove and the gas inlet port of the bearing end cap are correspondingly arranged so that the gas guide port is communicated with the gas inlet port.
3. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 1 or 2, wherein the surface of the pump body is provided with a plurality of first ribs, and the first ribs are arranged to intersect with each other.
4. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 3, wherein a gas guide tube is arranged at the gas outlet of the pump body, the gas guide tube is arranged along the radial direction of the rotor cavity, and the gas guide tube is connected with the first reinforcing rib.
5. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 2, wherein the end cap is provided with a plurality of second ribs arranged to intersect with each other, and the gas inlet and the second ribs are connected.
6. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 1 or 2, wherein four roots lobes on the surfaces of the driving rotor and the driven rotor are respectively formed with four gas passages, the gas inlet is disposed corresponding to three of the gas passages in a gas inlet state, and the gas outlet is disposed corresponding to the last gas passage in a gas exhaust state.
7. The inlet and outlet structure of a roots-type hydrogen circulation pump as claimed in claim 6, wherein the inlet is provided with a connecting rib at a position corresponding to the mounting groove.
8. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 1, wherein the main body of the gas outlet is a circular port structure, the inner wall of the main body of the gas outlet is provided with a wind shielding part, and the edge of the wind shielding part is arranged along the profile of the roots blade so that the gas outlet corresponds to the gas outlet position where the gas outlet is separated from the roots blade.
9. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 1, wherein the gas delivered to the gas outlet cavity by the driving rotor and the driven rotor is discharged outwards along the axial gas outlet portion and the radial gas outlet portion, and the axial gas outlet portion allows the buffered gas to be discharged outwards along the radial gas outlet portion through the gas outlet.
10. The gas inlet and outlet structure of a roots-type hydrogen circulation pump according to claim 2, wherein gas inlet chambers are formed between the driving and driven rotors and the pump body at positions corresponding to the gas inlets, the axial profiles of the gas inlet chambers and the gas inlet profiles have portions that coincide with each other, and the axial profiles of the gas inlet chambers are larger than the profiles of the gas inlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921106010.8U CN210371178U (en) | 2019-07-15 | 2019-07-15 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921106010.8U CN210371178U (en) | 2019-07-15 | 2019-07-15 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
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| Publication Number | Publication Date |
|---|---|
| CN210371178U true CN210371178U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921106010.8U Active CN210371178U (en) | 2019-07-15 | 2019-07-15 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278563A (en) * | 2021-12-23 | 2022-04-05 | 上海重塑能源科技有限公司 | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating pump |
| CN115425256B (en) * | 2022-09-07 | 2023-07-07 | 烟台东德实业有限公司 | Integrated bypass injection type Roots hydrogen circulating pump |
-
2019
- 2019-07-15 CN CN201921106010.8U patent/CN210371178U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278563A (en) * | 2021-12-23 | 2022-04-05 | 上海重塑能源科技有限公司 | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating pump |
| CN114278563B (en) * | 2021-12-23 | 2024-01-19 | 上海重塑能源科技有限公司 | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system |
| CN115425256B (en) * | 2022-09-07 | 2023-07-07 | 烟台东德实业有限公司 | Integrated bypass injection type Roots hydrogen circulating pump |
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