CN111059056A - Pump body assembly, rotary compressor and air conditioner - Google Patents
Pump body assembly, rotary compressor and air conditioner Download PDFInfo
- Publication number
- CN111059056A CN111059056A CN201911215910.0A CN201911215910A CN111059056A CN 111059056 A CN111059056 A CN 111059056A CN 201911215910 A CN201911215910 A CN 201911215910A CN 111059056 A CN111059056 A CN 111059056A
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- Prior art keywords
- exhaust port
- pump body
- body assembly
- muffler
- compressor
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- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 12
- 230000003584 silencer Effects 0.000 description 8
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
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- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- 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
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 pump body assembly, a rotary compressor and an air conditioner. One of them pump body subassembly, including the exhaust chamber, the exhaust chamber is constructed with first exhaust port, the low reaches of first exhaust port are equipped with the muffler, the muffler is used for right the air current of first exhaust port exhaust cushions and makes an uproar, be constructed with the second exhaust port on the muffler, the flow area of first exhaust port is S1, the flow area of second exhaust port is S0, and 0.314 < S0/S1 < 0.865. The invention provides a pump body assembly, a rotary compressor and an air conditioner, which can reduce the oil discharge rate of the compressor, reduce the reliability risk of the compressor caused by insufficient lubrication due to overhigh oil discharge rate, and improve the refrigerating capacity of the compressor to realize high efficiency of the compressor.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a pump body assembly, a rotary compressor and an air conditioner.
Background
The rolling rotor compressor also is a rotary compressor pump body assembly which comprises a cylinder, a roller, a crankshaft, an upper flange assembly, a lower flange assembly (comprising an upper flange, a lower flange, an exhaust valve plate and a valve plate limit baffle) and a slip sheet, wherein the pump body parts are mutually matched to form a closed high-pressure cavity (an exhaust cavity or a compression cavity) and a low-pressure cavity (a suction cavity), the slip sheet is in clearance fit with a cylinder slip sheet groove, and reciprocates in the slip sheet groove, so that the volume of the high-pressure cavity and the low-pressure cavity is periodically changed, when the volume of the compression cavity is reduced to a certain degree, the gas pressure in the compression cavity reaches or exceeds the backpressure borne by the valve plate above a flange exhaust port, the valve plate is opened, the gas in the compression cavity is exhausted out of. In order to reduce the pneumatic noise of the exhaust, a silencer is usually installed on the exhaust passage of the flange, so that the exhaust gas flow is subjected to reactive silencing through a silencer expansion cavity and then is discharged out of the pump body to the inside of the compressor shell from the silencer exhaust port.
Rotary compressors tend to be more and more miniaturized, the design space of the displacement of a small series of compressors is necessarily limited, and high frequency is necessarily the development trend of the compressors in order to meet the requirement of cooling capacity. For small series of compressors, the oil discharge rate of the compressor is easily increased due to high frequency, and a large amount of frozen lubricating oil is discharged out of a compressor shell along with high-pressure gas in a gaseous form and enters a system, so that the lubricating oil in the compressor is insufficient, and the reliability problem of the compressor is caused. In addition, since a large amount of lubricant is contained in the discharge gas, the refrigerating capacity is reduced, the compressor energy efficiency is lowered, and it is not advantageous for efficient design of the compressor. However, in the industry, the exhaust port and the flange exhaust port (or the exhaust port of the exhaust cavity) of the muffler are often limited based on how to reduce the exhaust noise level of the compressor, and after a great deal of research, the inventor finds that the limitation of the exhaust port and the flange exhaust port of the muffler based on noise reduction cannot effectively control the oil discharge rate of the compressor, and therefore the invention is provided.
Disclosure of Invention
Therefore, an object of the present invention is to provide a pump assembly, a rotary compressor, and an air conditioner, which can reduce the oil discharge rate of the compressor, reduce the risk of reliability of the compressor due to insufficient lubrication caused by an excessively high oil discharge rate, and improve the refrigeration capacity of the compressor to achieve high efficiency of the compressor.
In order to solve the problems, the invention provides a pump body assembly, which comprises an exhaust cavity, wherein the exhaust cavity is provided with a first exhaust port, a silencer is arranged at the downstream of the first exhaust port and used for buffering and reducing noise of airflow discharged by the first exhaust port, the silencer is provided with a second exhaust port, the flow area of the first exhaust port is S1, the flow area of the second exhaust port is S0, and S0/S1 is more than 0.865.
Preferably, 0.42 < S0/S1 < 0.75.
Preferably, 0.58 < S0/S1 < 0.65.
Preferably, the equivalent diameter of the second exhaust port is d0, and the equivalent diameter of the first exhaust port is d1, 0.56d1 < d0 < 0.93d 1.
Preferably, the pump body assembly further includes a first flange, a crankshaft, and a motor rotor, the first flange is sleeved on the crankshaft, the first exhaust port is configured on the first flange, the muffler is connected to the first flange in a covering manner, on the side away from the first cylinder, along the axial direction of the crankshaft, the first rotor forms a first projection area on the muffler, and the second exhaust port is located outside the first projection area.
Preferably, the muffler has a circumferential standing wall extending in an axial direction of the crankshaft, and the second exhaust port is located on the circumferential standing wall.
Preferably, the second exhaust port is circular or elliptical.
Preferably, the muffler is a double-layer muffler or a multi-layer muffler.
The invention also provides a rotary compressor which comprises the pump body assembly.
The invention also provides an air conditioner which comprises the rotary compressor.
According to the pump body assembly, the rotary compressor and the air conditioner, the high-frequency oil discharge rate of the compressor can be reduced through the size proportional relation of the S0 and the S1, the reliability risk of the compressor caused by insufficient lubrication due to overhigh oil discharge rate is reduced, the refrigeration capacity of the compressor is improved, the high efficiency of the compressor is realized, effective lubrication of parts of a friction pair of a pump body of the compressor is further ensured, and the mechanical noise of the compressor is reduced to a certain extent.
Drawings
FIG. 1 is a schematic cross-sectional view of a pump block assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at M;
FIG. 3 is a schematic diagram of an embodiment of the muffler of FIG. 1;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic structural view of another embodiment of the muffler of FIG. 1;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a schematic structural view of yet another embodiment of the muffler of FIG. 1;
FIG. 8 is a schematic structural view of another embodiment of the muffler of FIG. 1.
The reference numerals are represented as:
1. an exhaust chamber; 11. a first exhaust port; 2. a muffler; 21. a second exhaust port; 22. a circumferential upright wall; 31. a first flange; 32. a first cylinder; 33. a crankshaft; 34. a second flange; 35. a first roller.
Detailed Description
Referring to fig. 1 to 8 in combination, according to an embodiment of the present invention, there is provided a pump body assembly, including a first flange 31, a second flange 34, a first cylinder 32, a crankshaft 33, and a sliding vane (not shown in the drawings), wherein the first cylinder 32 has a hollow structure, the first flange 31 and the second flange 34 are respectively located at two axial ends of the first cylinder 32, the crankshaft 33 is inserted into the first flange 31 and the second flange 34, and the crankshaft 33 has an eccentric portion, a first roller 35 is sleeved on the eccentric portion, the sliding vane is slidably connected in a sliding slot of the first cylinder 32, a terminal of the sliding vane is connected to an outer peripheral wall of the first roller 35 in an abutting manner, so that the hollow structure is divided into a suction chamber (low pressure chamber) and a discharge chamber 1 (high pressure chamber), the discharge chamber 1 is configured with a first discharge port 11, specifically, the first exhaust port 11 may be configured on the first flange 31, for example, a muffler 2 is disposed downstream of the first exhaust port 11, the muffler 2 is configured to buffer and reduce noise of the airflow discharged from the first exhaust port 11, the muffler 2 is configured with a second exhaust port 21, a flow area of the first exhaust port 11 is S1, and a flow area of the second exhaust port 21 is S0, where 0.314 < S0/S1 < 0.865. According to the technical scheme, the high-frequency oil discharge rate of the compressor can be reduced through the size proportional relation of the S0 and the S1, the reliability risk of the compressor caused by insufficient lubrication due to overhigh oil discharge rate is reduced, the refrigeration capacity of the compressor is improved to realize high efficiency of the compressor, effective lubrication of friction pair parts of a pump body of the compressor is further ensured, and therefore mechanical noise of the compressor is reduced to a certain extent. Further, 0.42 < S0/S1 < 0.75. Most preferably, 0.58 < S0/S1 < 0.65.
The second exhaust port 21 may have a relatively regular shape, such as a circular shape or an oval shape (as shown in fig. 7), so that the manufacturing process of the second exhaust port 21 can be simplified,the second exhaust port 21 may have other irregular shapes (as shown in fig. 8), and the shape of the first exhaust port 11 may be selected as described above. The definition of the second exhaust port 21 may be achieved in the form of an equivalent diameter, the equivalent diameter of the second exhaust port 21 being d0, the equivalent diameter of the first exhaust port 11 being d1, 0.56d1 < d0 < 0.93d1, it being understood that,
further, the pump body assembly may be a single working chamber (single cylinder) or a multiple working chamber (multiple cylinders), the number of the exhaust ports of the same muffler or flange may be single or multiple, when the number of the exhaust ports is multiple cylinders or multiple exhaust ports, the flow area S0 of the second exhaust port 21 and the flow area S1 of the first exhaust port 11 respectively refer to the sum of the flow areas of the exhaust ports of the mufflers and the sum of the flow areas of the exhaust ports of the flange.
Preferably, the pump body assembly further includes a motor rotor (not shown in the drawings), the motor rotor is sleeved on the crankshaft 33 and is used for driving the crankshaft 33 to rotate, the first flange 31 is sleeved on the crankshaft 33, the first exhaust port 11 is configured on the first flange 31, the muffler 2 covers one side of the first flange 31 far away from the first cylinder 32, the first rotor forms a first projection area on the muffler 2 along the axial direction of the crankshaft 33, and the second exhaust port 21 is located outside the first projection area, so that it is ensured that the gas flow flowing out of the second exhaust port 21 does not directly impact the motor rotor rotating at a high speed, the exhaust gas avoids the rotating motor rotor and impacts on the stationary motor stator end face, and the exhaust gas can be further separated on the motor stator end face, when the oil discharge rate is reduced, the phenomenon that the gas discharged by the silencer 2 directly impacts the end face of the rotor of the rotating motor above the silencer to cause large airflow pulsation is avoided to the maximum extent, pneumatic noise caused by the exhaust airflow pulsation is reduced, the rotating power consumption of the motor is reduced, and the energy efficiency of the compressor is improved.
Further, the muffler 2 has a circumferential standing wall 22 extending in the axial direction of the crankshaft 33, and the second exhaust port 21 is provided in the circumferential standing wall 22. In the technical scheme, axial exhaust is changed into lateral exhaust, so that exhaust gas can completely avoid a motor rotor of the compressor, and the gas exhausted by the silencer 2 impacts a static flange skirt or a shell of the compressor, thereby reducing the oil discharge rate, reducing airflow pulsation and power consumption of the motor to a greater extent and achieving the effect of improving efficiency and reducing noise.
Preferably, the muffler is a double-layer muffler or a multi-layer muffler.
The invention also provides a rotary compressor which comprises the pump body assembly.
The invention also provides an air conditioner which comprises the rotary compressor.
The inventor verifies the technical scheme effect in a specific model compressor prototype, and the technical scheme effect mainly shows that the oil-spitting rate of the compressor is effectively reduced, the energy efficiency is obviously improved, and the total noise value within the full frequency band and 1000Hz is reduced to a certain degree as shown in the following table. Compared with the compressor in the prior art, the compressor in the technical scheme of the invention has the advantages that the actual oil discharge rate, the performance and the noise test data show that under the working condition of national standard 80Hz, the oil discharge rate is reduced from 2.17% to 1.26%, the total noise value in full frequency band is reduced by 1.2dBA, the total noise value within 1000Hz is reduced by 2.35dBA, and the energy efficiency COP is improved by 1.5%.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, but includes all modifications, equivalents, and improvements within the spirit and scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The pump body assembly is characterized by comprising an exhaust cavity (1), wherein the exhaust cavity (1) is configured with a first exhaust port (11), a muffler (2) is arranged at the downstream of the first exhaust port (11), the muffler (2) is used for buffering and reducing noise of airflow exhausted by the first exhaust port (11), a second exhaust port (21) is configured on the muffler (2), the flow area of the first exhaust port (11) is S1, the flow area of the second exhaust port (21) is S0, and S0/S1 is more than 0.314.
2. The pump body assembly of claim 1, wherein 0.42 < S0/S1 < 0.75.
3. The pump body assembly of claim 2, wherein 0.58 < S0/S1 < 0.65.
4. The pump body assembly according to claim 1, characterized in that the equivalent diameter of the second exhaust port (21) is d0, the equivalent diameter of the first exhaust port (11) is d1, 0.56d1 < d0 < 0.93d 1.
5. The pump body assembly according to claim 1, further comprising a first flange (31), a crankshaft (33), and a motor rotor, wherein the first flange (31) is sleeved on the crankshaft (33), the first exhaust port (11) is configured on the first flange (31), the muffler (2) is covered and connected to a side of the first flange (31) far away from the first cylinder (32), the first rotor forms a first projection area on the muffler (2) along an axial direction of the crankshaft (33), and the second exhaust port (21) is located outside the first projection area.
6. The pump body assembly according to claim 5, characterized in that the muffler (2) has a circumferential standing wall (22) extending in an axial direction of the crankshaft (33), the second exhaust port (21) being on the circumferential standing wall (22).
7. The pump body assembly according to claim 1, characterized in that the second exhaust port (21) is circular or oval.
8. The pump body assembly of claim 1, wherein the acoustic damper is a double layer acoustic damper or a multi-layer acoustic damper.
9. A rotary compressor comprising a pump body assembly, characterized in that it is a pump body assembly according to any one of claims 1 to 8.
10. An air conditioner comprising a rotary compressor, wherein the rotary compressor is the rotary compressor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215910.0A CN111059056A (en) | 2019-12-02 | 2019-12-02 | Pump body assembly, rotary compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215910.0A CN111059056A (en) | 2019-12-02 | 2019-12-02 | Pump body assembly, rotary compressor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059056A true CN111059056A (en) | 2020-04-24 |
Family
ID=70299470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911215910.0A Pending CN111059056A (en) | 2019-12-02 | 2019-12-02 | Pump body assembly, rotary compressor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059056A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266568A (en) * | 2021-06-22 | 2021-08-17 | 广东美芝制冷设备有限公司 | Suction and exhaust structure, compressor and refrigeration equipment |
-
2019
- 2019-12-02 CN CN201911215910.0A patent/CN111059056A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266568A (en) * | 2021-06-22 | 2021-08-17 | 广东美芝制冷设备有限公司 | Suction and exhaust structure, compressor and refrigeration equipment |
| CN113266568B (en) * | 2021-06-22 | 2023-01-31 | 广东美芝制冷设备有限公司 | Suction and exhaust structure, compressor and refrigeration equipment |
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