CN110630503A - Compressor and exhaust structure and exhaust method thereof - Google Patents
Compressor and exhaust structure and exhaust method thereof Download PDFInfo
- Publication number
- CN110630503A CN110630503A CN201810664156.8A CN201810664156A CN110630503A CN 110630503 A CN110630503 A CN 110630503A CN 201810664156 A CN201810664156 A CN 201810664156A CN 110630503 A CN110630503 A CN 110630503A
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- cylinder
- compressor
- stage cylinder
- exhaust
- gas
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005192 partition Methods 0.000 claims abstract description 33
- 230000003584 silencer Effects 0.000 claims description 15
- 230000030279 gene silencing Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
-
- 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
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a compressor, an exhaust structure and an exhaust method thereof, which can increase the tightness of the two-stage compressor during exhaust and reduce the material cost and the process cost of the compressor. The exhaust structure comprises an airflow channel and a middle partition plate, the middle partition plate is arranged between a first-stage cylinder and a second-stage cylinder of the compressor, the airflow channel is arranged in a shell of the compressor, gas enters an exhaust cavity of the middle partition plate after being compressed by the first-stage cylinder and enters the airflow channel after being exhausted by the exhaust cavity, and then the airflow channel is exhausted to the second-stage cylinder for recompression.
Description
Technical Field
The invention relates to a compressor, in particular to an exhaust structure and an exhaust method.
Background
The compressor is a fluid machine for lifting low-pressure gas into high-pressure gas, is a heart of a refrigeration system, and is widely used in the air conditioning industry at present.
The existing two-stage compressor adopts a two-stage cylinder to realize gas compression, specifically, gas is subjected to one-stage compression through a first-stage cylinder, is discharged from a first-stage exhaust cavity, then enters a gas flow passage and is absorbed by a second-stage cylinder to realize two-stage compression.
Because the pressure in the first-stage exhaust cavity is lower than the pressure in the compressor shell, the first-stage exhaust cavity is mostly provided with a silencer of a sheet metal structure, and the processing precision of sheet metal is poor, the leakage of the gas after the first-stage compression is serious when the gas is exhausted through the silencer. For this reason, a corresponding seal is added, which greatly increases the material cost and the process cost of the compressor.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a compressor, a gas discharge structure and a gas discharge method thereof, which can increase the sealing performance of the two-stage compressor during gas discharge and reduce the material cost and the process cost of the compressor.
According to one aspect of the invention, a gas exhaust structure of a compressor is provided, the compressor comprises a shell, a first-stage cylinder and a second-stage cylinder, wherein the first-stage cylinder and the second-stage cylinder are arranged in the shell, a middle partition plate is arranged between the first-stage cylinder and the second-stage cylinder, the gas exhaust structure comprises a gas flow channel and the middle partition plate, and the gas flow channel is arranged in the shell;
and the gas enters the exhaust cavity of the middle partition plate after being compressed by the first-stage cylinder, is exhausted by the exhaust cavity, enters the airflow channel, and is exhausted to the second-stage cylinder by the airflow channel to be compressed again.
Preferably, in the exhaust structure, the intermediate partition plate includes a first sub-plate and a second sub-plate.
Preferably, in the air discharge structure, the first sub-plate has a recess, and/or the second sub-plate has a recess.
Preferably, in the exhaust structure, a muffler is disposed at the second-stage cylinder, and the gas compressed by the second-stage cylinder is exhausted to a silencing chamber of the muffler.
Preferably, in the exhaust structure, the first-stage cylinder is an upper cylinder close to the motor, and the second-stage cylinder is a lower cylinder far away from the motor.
Preferably, in the exhaust structure, a lower muffler is disposed at the lower cylinder, and the gas compressed by the lower cylinder is exhausted to a muffling cavity of the lower muffler.
Preferably, in the exhaust structure, the first-stage cylinder is a lower cylinder far away from the motor, and the second-stage cylinder is an upper cylinder close to the motor.
Preferably, in the exhaust structure, an upper muffler is disposed at the upper cylinder, and the gas compressed by the upper cylinder is exhausted to a silencing cavity of the upper muffler.
According to another aspect of the invention, a compressor is provided, which comprises a shell, a first-stage cylinder and a second-stage cylinder arranged in the shell, wherein an intermediate partition plate is arranged between the first-stage cylinder and the second-stage cylinder, and the compressor further comprises the exhaust structure.
According to still another aspect of the present invention, there is provided a gas discharge method of a compressor, the gas discharge method including:
the gas enters the exhaust cavity of the middle partition plate after being compressed by the first-stage cylinder, is exhausted from the exhaust cavity and then enters the gas flow channel, and then is exhausted to the second-stage cylinder from the gas flow channel to be compressed again.
Preferably, the exhaust method further includes: and the gas compressed by the second-stage cylinder is discharged to a silencing cavity of a silencer.
According to the technical scheme provided by the invention, the exhaust structure of the compressor comprises an airflow channel and a middle partition plate of the compressor, the airflow channel is arranged in a shell of the compressor, and during actual exhaust, gas enters an exhaust cavity of the middle partition plate after being compressed by a first-stage cylinder of the compressor, and enters the airflow channel after being exhausted by the exhaust cavity, and then is exhausted to a second-stage cylinder of the compressor by the airflow channel to be compressed again. The exhaust cavity of the middle partition plate is used as the first-stage exhaust cavity, so that a sealing element of the existing first-stage exhaust cavity can be omitted, and the machining precision of the middle partition plate is higher than that of the silencer, so that the first-stage exhaust has good sealing performance, the leakage is reduced, and the material cost and the process cost of the compressor are reduced.
In a preferred embodiment, if the first-stage cylinder is an upper cylinder close to the motor, the upper silencer at the upper cylinder can be eliminated, so that the height of the motor relative to the pump body is reduced, the input force of the compressor is reduced, and the performance of the compressor is improved. In another preferred embodiment, if the first-stage cylinder is a lower cylinder far away from the motor, the lower silencer at the lower cylinder can be eliminated, and the elimination of the lower silencer can reduce the height of the whole machine due to the large volume and high height of the lower silencer.
Drawings
The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a compressor according to another embodiment of the present invention.
In the figure:
a compressor-10; an upper cylinder-11; an upper cylinder cover-111; a lower cylinder-12; a lower cylinder cover-121; a middle partition plate-13; an exhaust chamber-131; air inlet holes-132, 133; a gas flow channel-14; an upper muffler-15; silencing chambers-151, 161; a lower silencer-16.
Detailed Description
The compressor and the exhaust structure and the exhaust method thereof according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As used in this specification, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
Fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention, and as shown in fig. 1, a compressor 10, specifically, a twin-cylinder compressor (or may be referred to as a twin-rotor compressor), is provided. The compressor 10 includes a housing (not shown), and a first-stage cylinder and a second-stage cylinder disposed in the housing, and each arrow indicates a flow direction of gas.
As shown in fig. 1, the first stage cylinder may be a lower cylinder 12 far from the motor, and the second stage cylinder may be an upper cylinder 11 near the motor. When the compressor 10 is vertically installed with respect to a horizontal plane, the upper cylinder 11 and the lower cylinder 12 are arranged up and down, and a middle partition plate 13 is disposed between the two cylinders. Here, the upper and lower positions of the upper cylinder 11 and the lower cylinder 12 are not fixed and may be changed according to the installation direction of the compressor 10, for example, when the compressor 10 is installed horizontally with respect to a horizontal plane, the two cylinders are horizontally arranged, or when the compressor 10 is installed obliquely with respect to the horizontal plane, the two cylinders are correspondingly obliquely arranged. Therefore, the "up and down" is not intended to limit the relative positions of the two cylinders in the present invention.
Further, the compressor 10 further includes a discharge structure, and the discharge structure includes a gas flow passage 14 (indicated by a gas flow path indicated by an arrow) provided in the housing and the intermediate partition 13. During actual exhaust, the gas a enters the lower cylinder 12, is compressed by the lower cylinder 12, is discharged to the exhaust chamber 131 of the intermediate partition 13, is discharged from the exhaust chamber 131 to the gas flow passage 14, and is then discharged from the gas flow passage 14 to the upper cylinder 11 for compression.
Here, the exhaust chamber 131 of the intermediate partition plate 13 is used as the first stage exhaust chamber, which not only can omit the sealing member of the existing first stage exhaust chamber, but also can reduce the material cost and the process cost of the compressor because the processing precision of the intermediate partition plate 13 is higher than that of the existing silencer, and therefore, the first stage exhaust has good sealing performance and reduces the leakage. Particularly, when the first-stage cylinder is the lower cylinder 12 far away from the motor, the lower silencer at the lower cylinder 12 can be eliminated, and the lower silencer is large in size and high in height, so that the height of the whole machine can be reduced by eliminating the lower silencer.
Further, an upper muffler 15 is provided at the upper cylinder 11, so that the gas compressed by the upper cylinder 11 is discharged to a muffler chamber 151 of the upper muffler 15. In this embodiment, an upper head 111 may be mounted on an upper end surface of the upper cylinder 11, and the upper end surface of the upper cylinder 11 is far away from the lower cylinder 12. The lower end surface of the lower cylinder 12 can be provided with a lower cylinder cover 121, and the lower end surface of the lower cylinder 12 is far away from the upper cylinder 11. The upper muffler 15 is provided at the upper cylinder head 111.
In this embodiment, the exhaust chamber 131 is provided inside the intermediate partition 13, and the volume of the exhaust chamber 131 is preferably greater than or equal to the volume of the sound-deadening chamber 161 of the lower sound eliminator 16, so that the exhaust chamber 131 formed in the intermediate partition 13 can ensure the same noise reduction and sound deadening effect, and even better noise reduction and sound deadening effect.
In this embodiment, the middle partition 13 is provided with an air inlet hole 132 penetrating the exhaust cavity 131, and the air compressed by the lower cylinder 12 is exhausted to the exhaust cavity 131 through the air inlet hole 132. Meanwhile, the intermediate partition 13 is further provided with an air outlet (not shown) penetrating the air discharge chamber 131 so that the air is discharged from the air discharge chamber 131 through the air outlet.
However, in addition to the above embodiments, the first-stage cylinder may also be an upper cylinder 11 close to the motor, and the second-stage cylinder is a lower cylinder 12 far from the motor, as shown in fig. 2 in particular, fig. 2 is a schematic structural diagram of a compressor provided by another embodiment of the present invention, and each arrow in the diagram indicates a flow direction of gas.
As shown in fig. 2, during actual exhaust, the gas a enters the upper cylinder 11, is compressed by the upper cylinder 11, is discharged to the exhaust chamber 131 of the intermediate partition 13, is discharged from the exhaust chamber 131 to the gas flow passage 14, and is then discharged from the gas flow passage 14 to the lower cylinder 12 for compression. Here, when the first-stage cylinder is the upper cylinder 11 close to the motor, the upper silencer at the upper cylinder 11 can be eliminated, so that the height of the motor relative to the pump body is reduced, the input force of the compressor is reduced, and the performance of the compressor is improved.
Further, a lower muffler 16 is provided at the lower cylinder 12, so that the gas compressed by the lower cylinder 12 is discharged to a muffler chamber 161 of the lower muffler 16. The lower muffler 16 is disposed at the lower cylinder head 121.
In addition, the intermediate partition 13 is provided with an air inlet hole 133 penetrating the air discharge chamber 131, and the air compressed by the upper cylinder 11 is discharged to the air discharge chamber 131 through the air inlet hole 133.
In addition, in the foregoing embodiment, the intermediate partition 13 may be formed by stacking two sub-boards, namely, a first sub-board and a second sub-board. When the upper cylinder 11 is used as a first-stage cylinder, an air inlet 133 communicated with the exhaust cavity 131 is formed in one side of a first sub-plate close to the upper cylinder 11, a groove is formed in the other side of the first sub-plate, another groove is formed in a second sub-plate close to the lower cylinder 12, and the two grooves are jointly limited to form the exhaust cavity 131. Similarly, when the lower cylinder 12 is used as the first-stage cylinder, one side of the second sub-plate close to the lower cylinder 12 is provided with an air inlet 132 communicated with the exhaust cavity 131, the other side of the second sub-plate is provided with a groove, and meanwhile, the first sub-plate close to the upper cylinder 11 is provided with another groove, and the two grooves are jointly limited to form the exhaust cavity 131. However, the present invention is not limited to the two sub-boards being recessed to form the exhaust cavity 131, and in practice, only the corresponding sub-board may be recessed to form the exhaust cavity 131.
In addition, a valve structure (not shown) is preferably installed in the upper cylinder 11 or the lower cylinder 12, and the opening and closing of the valve structure is determined by the gas pressure borne by the surface; when the gas pressure is greater than or equal to the maximum pressure that the valve structure can bear, the valve structure is opened; the valve structure closes when the gas pressure is less than the maximum pressure that the valve structure can withstand. Specifically, as the gas in the upper cylinder 11 or the lower cylinder 12 is continuously compressed, the pressure of the gas in the upper cylinder 11 or the lower cylinder 12 is correspondingly increased, and when the sucked gas is accumulated to a certain degree, the pressure of the gas in the upper cylinder 11 or the lower cylinder 12 reaches the maximum pressure that can be borne by the valve structure, the valve structure is opened, and the gas enters the corresponding gas inlet hole through the valve structure and finally enters the exhaust cavity. More preferably, the valve structure may also prevent the compressed gas from flowing back into the upper cylinder 11 or the lower cylinder 12.
It should be noted that the main function of the silencing cavity is to reduce the compressor discharge noise, and of course, the discharge cavity can also reduce the compressor discharge noise in addition to discharge.
Finally, according to the technical scheme provided by the embodiment of the invention, the exhaust structure of the compressor comprises an airflow channel and a middle partition plate of the compressor, wherein the airflow channel is arranged in a shell of the compressor, and during actual exhaust, gas enters an exhaust cavity of the middle partition plate after being compressed by a first-stage cylinder of the compressor, enters the airflow channel after being exhausted by the exhaust cavity, and is then exhausted to a second-stage cylinder of the compressor by the airflow channel to be compressed again. The exhaust cavity of the middle partition plate is used as the first-stage exhaust cavity, so that a sealing element of the existing first-stage exhaust cavity can be omitted, and the machining precision of the middle partition plate is higher than that of the silencer, so that the first-stage exhaust has good sealing performance, the leakage is reduced, and the material cost and the process cost of the compressor are reduced.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (11)
1. A kind of exhaust structure of the compressor, the said compressor includes the body and locates the first stage cylinder and second stage cylinder in the said body, there is a intermediate barrier between said first stage cylinder and said second stage cylinder, characterized by that, the said exhaust structure includes a gas flow channel and the said intermediate barrier, the said gas flow channel locates in the said body;
the gas is compressed by the first-stage cylinder and then enters the gas exhaust cavity of the middle partition plate, is exhausted by the gas exhaust cavity and then enters the gas flow channel, and then is exhausted to the second-stage cylinder by the gas flow channel to be compressed again.
2. A discharge structure of a compressor in accordance with claim 1, wherein said intermediate partition plate comprises a first sub-plate and a second sub-plate.
3. A discharge structure of a compressor in accordance with claim 2, wherein said first sub-plate has a recess; and/or the second sub-board is provided with a groove.
4. A discharge structure of a compressor in accordance with claim 1, wherein a muffler is provided at said second stage cylinder, and a gas compressed by said second stage cylinder is discharged to said muffler.
5. The discharge structure of a compressor according to claim 1, wherein said first stage cylinder is an upper cylinder close to a motor, and said second stage cylinder is a lower cylinder far from said motor.
6. A discharge structure of a compressor in accordance with claim 5, wherein a lower muffler is provided at said lower cylinder, and gas compressed by said lower cylinder is discharged to a muffler chamber of said lower muffler.
7. The discharge structure of a compressor according to claim 1, wherein said first-stage cylinder is a lower cylinder far from a motor, and said second-stage cylinder is an upper cylinder near said motor.
8. A discharge structure of a compressor in accordance with claim 7, wherein an upper muffler is provided at said upper cylinder, and a gas compressed by said upper cylinder is discharged to a sound-deadening chamber of said upper muffler.
9. A compressor, including the casing and locate first stage cylinder and second stage cylinder in the casing, be equipped with intermediate bottom between first stage cylinder and the second stage cylinder, characterized by, the compressor still includes the exhaust structure of any one of claim 1 ~ 8.
10. A method of exhausting a compressor, the method comprising:
the gas enters the exhaust cavity of the middle partition plate after being compressed by the first-stage cylinder, is exhausted from the exhaust cavity and then enters the gas flow channel, and then is exhausted to the second-stage cylinder from the gas flow channel to be compressed again.
11. The discharge method of a compressor according to claim 10, further comprising: and the gas compressed by the second-stage cylinder is discharged to a silencing cavity of a silencer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664156.8A CN110630503A (en) | 2018-06-25 | 2018-06-25 | Compressor and exhaust structure and exhaust method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664156.8A CN110630503A (en) | 2018-06-25 | 2018-06-25 | Compressor and exhaust structure and exhaust method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630503A true CN110630503A (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810664156.8A Pending CN110630503A (en) | 2018-06-25 | 2018-06-25 | Compressor and exhaust structure and exhaust method thereof |
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| CN2578564Y (en) * | 2002-07-22 | 2003-10-08 | 上海日立电器有限公司 | Duplex two-stage compressing oscillating piston compressor |
| WO2009062366A1 (en) * | 2007-11-17 | 2009-05-22 | Guang Dong Mei Zhi Refrigeration Equipment Co., Ltd | A discharge valve device of a rotary compressor |
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| JP2013170477A (en) * | 2012-02-20 | 2013-09-02 | Panasonic Corp | Sealed compressor |
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-
2018
- 2018-06-25 CN CN201810664156.8A patent/CN110630503A/en active Pending
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