CN209943096U - Carbon dioxide compressor capable of double-stage compression - Google Patents
Carbon dioxide compressor capable of double-stage compression Download PDFInfo
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- CN209943096U CN209943096U CN201920517762.7U CN201920517762U CN209943096U CN 209943096 U CN209943096 U CN 209943096U CN 201920517762 U CN201920517762 U CN 201920517762U CN 209943096 U CN209943096 U CN 209943096U
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- stage compression
- compressor
- carbon dioxide
- pressure stage
- low
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 230000006835 compression Effects 0.000 title claims abstract description 61
- 238000007906 compression Methods 0.000 title claims abstract description 61
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 34
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 34
- 238000005192 partition Methods 0.000 claims description 4
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000002026 carminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a but carbon dioxide compressor of doublestage compression, including high-pressure stage compression portion and low-pressure stage compression portion, high-pressure stage compression portion and low-pressure stage compression portion form the two-stage compression, the working volume of high-pressure stage compression portion is V1, the working volume of low-pressure stage compression portion is V2, V1: v2 has a value in the range of 0.04 to 0.3. The utility model discloses a but carbon dioxide compressor of doublestage compression can solve the carbon dioxide compressor among the prior art effectively and have had the problem that requires height, the reliability is lower, the compressor efficiency is low to spare part intensity.
Description
Technical Field
The utility model relates to a compressor technical field particularly, relates to a but carbon dioxide compressor of doublestage compression.
Background
In the prior art, the existing carbon dioxide compressor generally adopts single-stage compression, after a refrigerant is filled, the carbon dioxide compressor starts to operate, and due to the particularity of the refrigerant of the compressor, the compressor is used for performing heat insulation compression simultaneously by air suction and exhaust, the clearance volume of the compressor is very small, so that the energy efficiency of the compressor is very high, but due to the particularity, the gas in a cavity of the compressor is higher than the gas pressure of a conventional roller rotating type compressor (the pressure of the conventional compressor is 3-4Mpa, and the pressure of the carbon dioxide compressor can be as high as 6-10 Mpa). The single-stage carbon dioxide compressor has high strength requirements on parts, the cost is 10-20% higher than that of the same series of compressors, in addition, the reliability requirement is extremely high, the single-stage structure is difficult to meet, and the energy efficiency of the compressor is also lower.
In conclusion, the carbon dioxide compressor in the prior art has the problems of high requirement on part strength, low reliability and low compressor energy efficiency.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a but carbon dioxide compressor of doublestage compression to solve the carbon dioxide compressor among the prior art and have the problem that requires height, reliability are lower, the compressor efficiency is low to spare part intensity.
In order to achieve the above object, the utility model provides a carbon dioxide compressor, including high-pressure stage compression portion and low-pressure stage compression portion, high-pressure stage compression portion and low-pressure stage compression portion form two-stage compression, and the working volume of high-pressure stage compression portion is V1, and the working volume of low-pressure stage compression portion is V2, V1: v2 has a value in the range of 0.04 to 0.3.
Furthermore, the high-pressure stage compression part comprises an upper cylinder and an upper flange, the low-pressure stage compression part comprises a lower cylinder and a lower flange, and gas compressed by the lower cylinder is discharged to the lower flange accommodating cavity and then enters the upper cylinder through the diversion channel.
Furthermore, a lateral exhaust pipe is arranged on the upper flange and communicated with the upper flange accommodating cavity, and gas compressed by the upper cylinder is exhausted out of the shell of the compressor through the lateral exhaust pipe.
Further, the exhaust port of the side exhaust pipe is located on the side wall of the compressor housing.
Further, a drainage channel is arranged between the high-pressure stage compression part and the low-pressure stage compression part.
Further, still including setting up the baffle between last cylinder and lower cylinder, drainage channel is including setting up the air vent on flange, lower cylinder and baffle down.
Further, the carbon dioxide compressor is a roller rotary compressor.
Aiming at the special pump body structure of the carbon dioxide compressor, the original single-stage compression is designed into two-stage compression, and the invention can adjust the volume ratio of high pressure and low pressure, so that the compressor with two-stage compression can complete the two-stage enthalpy-increasing air-supplementing effect without additionally adding an air-supplementing structure. And through the two-stage compression, the strength of parts is improved, the reliability of the compressor is improved, the enthalpy value is effectively improved through the two-stage compression, and the energy efficiency of the compressor can be effectively improved. Because the volume ratio of the high-low pressure cylinder of the double-stage compressor is larger, the pressure ratio of the high-low pressure cylinder is also larger, so that the carbon dioxide double-stage compressor of the scheme is different from a conventional double-stage enthalpy-increasing compressor, and an air supplementing structure is not required to be additionally arranged (because the pressure is higher, the double-stage compressor is equivalent to a small pressure container, the sealing property is better, and the reliability of the compressor is better). The design of different sizes is carried out according to the regional environment (lowest temperature), the pressure ratio of the double cylinders is changed, and the enthalpy value is improved according to different volume ratios, so that the energy efficiency of the compressor is improved.
Drawings
Fig. 1 is an internal structure schematic diagram of a carbon dioxide compressor according to an embodiment of the present invention.
Fig. 2 is a graph of the volume ratio and the relative coefficient of performance of the carbon dioxide compressor according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.
Referring to fig. 1, according to the embodiment of the utility model, a carbon dioxide compressor is provided, this carbon dioxide compressor includes high-pressure stage compression portion and low-pressure stage compression portion, and high-pressure stage compression portion and low-pressure stage compression portion form two-stage compression, and the working volume of high-pressure stage compression portion is V1, and the working volume of low-pressure stage compression portion is V2, V1: v2 has a value in the range of 0.04 to 0.3.
Aiming at the special pump body structure of the carbon dioxide compressor, the original single-stage compression is designed into two-stage compression, and the invention can adjust the volume ratio of high pressure and low pressure, so that the compressor with two-stage compression can complete the two-stage enthalpy-increasing air-supplementing effect without additionally adding an air-supplementing structure. And through the two-stage compression, the strength of parts is improved, the reliability of the compressor is improved, the enthalpy value is effectively improved through the two-stage compression, and the energy efficiency of the compressor can be effectively improved. The volume ratio of the upper cylinder and the lower cylinder is calculated theoretically and tested by simple simulation to obtain a curve chart of the volume ratio and the relative performance coefficient, and the curve chart is shown in figure 2. Wherein the heat minimum in fig. 2 is the lowest heating capacity; the hot middle is the middle heating quantity; thermal rating is the rated heat, and the terms are terms that describe performance. Because the volume ratio of the high-low pressure cylinder of the double-stage compressor is larger, the pressure ratio of the high-low pressure cylinder is also larger, so that the carbon dioxide double-stage compressor of the scheme is different from a conventional double-stage enthalpy-increasing compressor, and an air supplementing structure is not required to be additionally arranged (because the pressure is higher, the double-stage compressor is equivalent to a small pressure container, the sealing property is better, and the reliability of the compressor is better). The design of different sizes is carried out according to the regional environment (lowest temperature), the pressure ratio of the double cylinders is changed, and the enthalpy value is improved according to different volume ratios, so that the energy efficiency of the compressor is improved.
Referring to fig. 1, the high-pressure stage compression part includes an upper cylinder 11 and an upper flange 12, the low-pressure stage compression part includes a lower cylinder 21 and a lower flange 22, and the gas compressed by the lower cylinder 21 is discharged to a cavity of the lower flange 22 and then enters the upper cylinder 11 through a diversion passage. In this technical scheme, design drainage channel between last lower cylinder, the cylinder inhales gaseous and compresses the back down, gets into lower flange and holds the intracavity, later, through the drainage channel of pump body subassembly design, introduces the gas of one-level compression to last cylinder 11 (second grade jar) and compresses. After gas is sucked by a lower cylinder, the operation mode of the compressor is the same as that of a conventional two-stage compressor, and the gas is discharged to a lower flange (namely, a middle cavity of the two-stage enthalpy-increasing compressor is also called a mixing cavity and is a mixing cavity with a one-stage compression and air-supply structure).
The upper flange 12 is provided with a lateral exhaust pipe 30, the lateral exhaust pipe 30 is communicated with the cavity of the upper flange 12, and the gas compressed by the upper cylinder 11 is exhausted out of the shell of the compressor through the lateral exhaust pipe 30. The exhaust port of the side exhaust duct 30 is located on the side wall of the compressor housing. After the lower cylinder sucks gas and compresses the gas, the gas enters the lower flange cavity, the first-stage compressed gas is guided to the second-stage cylinder to be compressed, and then the gas is directly discharged out of the shell through the lateral exhaust pipe 30 of the upper flange 12. Because the gas is discharged without passing through the upper cavity of the motor, the gas is discharged by the upper cover component, the upper cavity of the motor and the upper cover component are in a medium-pressure state, the problem of reliability of the carbon dioxide compressor caused by overhigh pressure in the cavity is effectively avoided, and the quality of the compressor is ensured. In addition, because the pressure between the upper cavity and the upper cover of the motor is small, the pressure pulsation can be effectively reduced.
Preferably, a flow-directing passage is provided between the high-pressure stage compression and the low-pressure stage compression. The carbon dioxide compressor further comprises a partition plate 40 arranged between the upper cylinder 11 and the lower cylinder 21, and the drainage channel comprises vent holes arranged on the lower flange 22, the lower cylinder 21 and the partition plate 40. The carbon dioxide compressor is a roller rotary compressor.
This scheme is through design doublestage compression, through the calculation of optimal volume ratio, need not newly-increased extra tonifying qi structure, further guarantee compressor quality, and reduced the compressor cost, and the carminative last flange structural design of side direction can effectively slow down the pressure in the compressor cavity, make compressor motor epicoele remain low-medium pressure state all the time, reduce the pressure pulsation and the cavity pressure in the motor epicoele, the noise value of compressor has been reduced, the compressor leakage has been avoided, harm factors such as explosion, show promotion compressor reliability.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and decorations can be made without departing from the basic principle of the present invention, and these modifications and decorations are also considered to be within the scope of the present invention.
Claims (7)
1. A carbon dioxide compressor comprising a high-pressure stage compression portion and a low-pressure stage compression portion, the high-pressure stage compression portion and the low-pressure stage compression portion forming a two-stage compression, the high-pressure stage compression portion having a swept volume of V1, the low-pressure stage compression portion having a swept volume of V2, V1: v2 has a value in the range of 0.04 to 0.3.
2. The carbon dioxide compressor as recited in claim 1, wherein the high-pressure stage compression part comprises an upper cylinder (11) and an upper flange (12), the low-pressure stage compression part comprises a lower cylinder (21) and a lower flange (22), and gas compressed by the lower cylinder (21) is discharged to a cavity of the lower flange (22) and then enters the upper cylinder (11) through a diversion passage.
3. The carbon dioxide compressor as recited in claim 2, wherein a lateral exhaust pipe (30) is disposed on the upper flange (12), the lateral exhaust pipe (30) is communicated with the cavity of the upper flange (12), and the gas compressed in the upper cylinder (11) is exhausted out of the shell of the compressor through the lateral exhaust pipe (30).
4. Carbon dioxide compressor according to claim 3, characterized in that the exhaust port of the lateral exhaust duct (30) is located on a side wall of the compressor housing.
5. The carbon dioxide compressor of claim 1, wherein a diversion channel is provided between the high pressure stage compression and the low pressure stage compression.
6. The carbon dioxide compressor according to claim 2, further comprising a partition plate (40) disposed between the upper cylinder (11) and the lower cylinder (21), the drainage passage including a vent hole disposed on a lower flange (22), the lower cylinder (21), and the partition plate (40).
7. The carbon dioxide compressor of claim 1, wherein the carbon dioxide compressor is a roller rotary compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920517762.7U CN209943096U (en) | 2019-04-16 | 2019-04-16 | Carbon dioxide compressor capable of double-stage compression |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920517762.7U CN209943096U (en) | 2019-04-16 | 2019-04-16 | Carbon dioxide compressor capable of double-stage compression |
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| CN209943096U true CN209943096U (en) | 2020-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608913A (en) * | 2020-05-29 | 2020-09-01 | 广东美芝精密制造有限公司 | Compressor and air conditioning system |
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2019
- 2019-04-16 CN CN201920517762.7U patent/CN209943096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608913A (en) * | 2020-05-29 | 2020-09-01 | 广东美芝精密制造有限公司 | Compressor and air conditioning system |
| CN111608913B (en) * | 2020-05-29 | 2022-04-12 | 广东美芝精密制造有限公司 | Compressor and air conditioning system |
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