CN109595166B - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- CN109595166B CN109595166B CN201710944854.9A CN201710944854A CN109595166B CN 109595166 B CN109595166 B CN 109595166B CN 201710944854 A CN201710944854 A CN 201710944854A CN 109595166 B CN109595166 B CN 109595166B
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- China
- Prior art keywords
- exhaust
- partition plate
- bearing
- stage cylinder
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005192 partition Methods 0.000 claims abstract description 132
- 230000006835 compression Effects 0.000 claims abstract description 55
- 238000007906 compression Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims description 19
- 239000003507 refrigerant Substances 0.000 abstract description 54
- 230000010349 pulsation Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
- F04C23/008—Hermetic pumps
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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
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
Abstract
The invention discloses a compressor, comprising: a housing; compression mechanism, compression mechanism includes: a first stage cylinder; a second stage cylinder; the middle partition plate is clamped between the first-stage cylinder and the second-stage cylinder; the first bearing is matched with one side of the first-stage cylinder far away from the middle partition plate, and the middle partition plate is provided with an air suction channel communicated with the second air suction hole and the middle pressure cavity; the shell, the middle partition plate, the first bearing and the peripheral wall of the first-stage cylinder define a middle pressure cavity therebetween. According to the compressor of the invention, the bearing side exhaust baffle plate and the bearing main body can define a first exhaust passage communicated with the medium pressure cavity, and the baffle plate side exhaust baffle plate and the main baffle plate can define a second exhaust passage communicated with the medium pressure cavity. The refrigerant can enter the medium-pressure cavity through the first exhaust channel and the second exhaust channel, so that the exhaust volume of the compression mechanism can be increased, the exhaust resistance of the compression mechanism is reduced, the air suction pulsation of the second-stage cylinder is reduced, and the working noise of the compressor can be reduced.
Description
Technical Field
The invention relates to the field of compressors, in particular to a compressor.
Background
The double-cylinder rotary compressor generally comprises a closed shell, a crankshaft, a first-stage cylinder, a second-stage cylinder, a middle partition plate arranged between the first-stage cylinder and the second-stage cylinder, and the like, wherein a roller driven by the crankshaft is arranged in each cylinder and rotates in the cylinder to compress refrigerant under the drive of the crankshaft. The refrigerant gas is compressed in the first stage cylinder, enters the second stage cylinder through the exhaust passage on the middle partition plate after compression, is compressed again by the second stage cylinder and is discharged from the compressor.
In the existing high-low pressure split two-stage compressor, the interior of the compressor shell is either a high-pressure cavity, a low-pressure cavity or a medium-pressure cavity structure, and the whole circulation link of the refrigerant is unreasonable. To improve this state of the art, some materials of the related art propose a two-stage compressor structure with high-low pressure split inside the casing. According to the two-stage compressor structure, one side of the motor in the shell is separated from one side of the pump body, and the refrigerant discharged by the pump body is not discharged from one side of the motor but is discharged from one side of the pump body, so that the stroke of the refrigerant is greatly shortened, and the influence of the refrigerant on the motor is avoided.
The specific flow process of the refrigerant with the two-stage compressor structure is as follows, after the refrigerant gas is compressed in the first-stage cylinder, the refrigerant gas enters the second-stage cylinder through the exhaust channel on the middle partition plate, and then is discharged to the high-pressure cavity through the second-stage cylinder. The exhaust cavity is smaller in volume from the first-stage cylinder to the second-stage cylinder, and the resistance in the exhaust channel is larger, so that the working efficiency of the compression mechanism is influenced, and the compressor can generate great working noise.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the compressor which has the advantages of low working noise and high energy efficiency.
According to an embodiment of the present invention, a compressor includes: a housing; a compression mechanism, the compression mechanism comprising: the first-stage cylinder is internally provided with a first-stage compression cavity; a second stage cylinder defining a second stage compression chamber therein; the middle partition plate is clamped between the first-stage cylinder and the second-stage cylinder, and a second air suction hole communicated with the second-stage cylinder is formed in the middle partition plate; the first bearing is matched with one side, far away from the middle partition plate, of the first-stage cylinder; the middle pressure cavity is defined between the shell and the peripheral wall of the middle partition plate, the first bearing and the peripheral wall of the first-stage cylinder, the middle pressure cavity is respectively connected with the first exhaust hole and the second air suction hole of the first-stage compression cavity, a motor cavity is arranged on one side, away from the middle pressure cavity, of the first bearing in the shell, and the motor cavity is a low pressure cavity separated from the middle pressure cavity; when the first exhaust hole is formed in one side, facing the first bearing, of the first-stage cylinder, the first bearing comprises a bearing main body and a bearing-side exhaust partition plate, the bearing-side exhaust partition plate is arranged between the bearing main body and the first-stage cylinder, the first exhaust hole is formed in the bearing-side exhaust partition plate, and a first exhaust channel for communicating the first exhaust hole with the medium-pressure cavity is defined between the bearing main body and the bearing-side exhaust partition plate; when the first exhaust hole is formed in one side, facing the middle partition plate, of the first-stage cylinder, the middle partition plate comprises a main partition plate and a partition plate side exhaust partition plate, the partition plate side exhaust partition plate is arranged between the main partition plate and the first-stage cylinder, the first exhaust hole is formed in the partition plate side exhaust partition plate, the second air suction hole is formed in the main partition plate, and a second exhaust channel which is communicated with the first exhaust hole and the middle pressure cavity is defined between the main partition plate and the partition plate side exhaust partition plate.
According to the compressor provided by the embodiment of the invention, the bearing side exhaust baffle plate and the baffle plate side exhaust baffle plate are arranged, the bearing side exhaust baffle plate and the bearing main body can define a first exhaust passage communicated with the medium pressure cavity, and the baffle plate side exhaust baffle plate and the main baffle plate can define a second exhaust passage communicated with the medium pressure cavity. The refrigerant after compression in the first stage cylinder can enter the medium pressure cavity through the first exhaust channel and the second exhaust channel, so that the exhaust volume of the compression mechanism can be increased, the exhaust resistance of the compression mechanism is reduced, the air suction pulsation of the second stage cylinder is reduced, and the working noise of the compressor can be reduced. The compressor has simple and compact structure and strong practicability.
According to some embodiments of the invention, the bearing side exhaust partition and the partition side exhaust partition are provided with valve mounting grooves, the first exhaust holes are formed in the bottom wall of the valve mounting grooves, and the first exhaust valve components matched with the first exhaust holes are arranged in the valve mounting grooves.
According to some embodiments of the invention, the first exhaust passage is provided with a first communication hole communicating with the medium pressure chamber on an outer periphery of the bearing-side exhaust partition.
According to some embodiments of the invention, the second exhaust passage exhausts a second communication hole of the partition plate facing the first stage cylinder communicating with the intermediate pressure chamber.
According to some embodiments of the invention, the main partition and the partition side exhaust partition define therebetween the suction passage that communicates the second suction hole and the medium pressure chamber.
In some embodiments of the invention, the suction channel and the second exhaust channel are spaced apart within the septum.
In some embodiments of the invention, the suction channel and the second exhaust channel are in communication within the septum.
According to some embodiments of the invention, at least one of the first and second exhaust passages is formed as a straight passage or an arc-shaped passage or a circular passage.
According to some embodiments of the invention, the casing is provided with a gas-compensating port communicated with the medium-pressure cavity.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a sectional view of an overall structure of a compressor according to an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of a compression mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic view of the mating structure of a bearing body and a bearing-side exhaust baffle according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the mating structure of a main partition and a partition side exhaust partition in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of the overall structure of a main separator according to an embodiment of the present invention;
FIG. 6 is a schematic view showing the overall structure of an exhaust partition according to a first embodiment of the present invention;
FIG. 7 is a schematic view showing the overall structure of an exhaust baffle plate according to a second embodiment of the present invention;
FIG. 8 is a schematic view showing the overall structure of an exhaust baffle plate according to a third embodiment of the present invention;
fig. 9 is a schematic view showing the overall structure of an exhaust baffle plate according to a fourth embodiment of the present invention.
Reference numerals:
the compression mechanism 100 is configured to compress the fluid,
the first-stage cylinder 1,
a second stage cylinder 2 is provided with a first stage,
a middle partition plate 3, an air suction passage 31, a main partition plate 32, a second air suction hole 321, a partition plate side air discharge partition plate 33, a second communication hole 331, a second air discharge passage 34,
the first bearing 4, the bearing body 41, the bearing-side exhaust partition 42, the first exhaust hole 421, the first exhaust passage 422, the first communication hole 423, the first exhaust valve assembly 43,
the second bearing 5, the crankshaft 6,
the compressor 200 is configured to perform a compressor,
a housing 7, a motor 8, a motor chamber 9,
pump chamber 10, medium pressure chamber 101, high pressure chamber 102.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "bottom", "inner", "outer", "axial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A compressor 200 according to an embodiment of the present invention, which can be used for compressing a refrigerant, is described below with reference to fig. 1 to 9.
As shown in fig. 1-2, a compressor 200 according to an embodiment of the present invention includes: a housing 7 and a compression mechanism 100. The compression mechanism 100 includes: a first stage cylinder 1, a second stage cylinder 2, a middle partition 3, a first bearing 4 and a second bearing 5. The first-stage cylinder 1 defines a first-stage compression chamber, and the refrigerant entering the compression mechanism 100 firstly enters the first-stage compression chamber to complete first-stage compression. The second-stage cylinder 2 defines a second-stage compression chamber therein, and the refrigerant subjected to the first-stage compression may enter the second-stage cylinder 2, thereby completing the second-stage compression. The middle partition plate 3 is clamped between the first-stage cylinder 1 and the second-stage cylinder 2, the middle partition plate 3 is provided with a second air suction hole 321 communicated with the second-stage cylinder 2, and the refrigerant subjected to first-stage compression can enter the second-stage cylinder 2 through the second air suction hole 321, so that the circulation of the refrigerant between the first-stage cylinder 1 and the second-stage cylinder 2 can be realized.
As shown in fig. 1-2, the first bearing 4 is fitted on a side of the first stage cylinder 1 away from the middle partition plate 3, and a middle pressure chamber 101 is defined between the casing 7 and the middle partition plate 3, between the first bearing 4 and the outer peripheral wall of the first stage cylinder 1, and the middle pressure chamber 101 is connected to the first exhaust hole 421 and the second exhaust hole 321 of the first stage compression chamber, respectively. The side of the housing 7, which is located at the first bearing 4 and is far away from the medium pressure chamber 101, is a motor chamber 9, and the motor chamber 9 is a low pressure chamber separated from the medium pressure chamber 101.
The middle partition plate 3 is provided with an air suction channel 31 which is communicated with the second air suction hole 321 and the middle pressure cavity 101. The medium pressure cavity 101 can increase the exhaust volume of the first stage cylinder 1 and has the function of buffering the refrigerant. After compression of the refrigerant in the first-stage cylinder 1 is completed, the refrigerant can enter the medium-pressure cavity 101, and the refrigerant in the medium-pressure cavity 101 can enter the second-stage cylinder 2 through the air suction channel 31 on the middle partition plate 3, so that air suction pulsation of the second-stage cylinder 2 can be reduced, working noise of the compressor 200 is reduced, and energy efficiency of the compressor 200 is improved.
As shown in fig. 1-2, the second bearing 5 is fitted on the side of the second stage cylinder 2 remote from the intermediate plate 3, and the first bearing 4 and the second bearing 5 are typically arranged in pairs, and the first bearing 4 and the second bearing 5 can function to seal the cylinder and support the crankshaft 6.
For example, as shown in fig. 2, the first bearing 4 is disposed on the rightmost side of the compression mechanism 100, the second bearing 5 is disposed on the leftmost side of the compression mechanism 100, and both the first bearing 4 and the second bearing 5 are engaged with the crankshaft 6, so that the crankshaft 6 can be supported. The first-stage cylinder 1 is attached to the left end face of the first bearing 4, the second-stage cylinder 2 is attached to the right end face of the second bearing 5, and the middle partition plate 3 is arranged between the first-stage cylinder 1 and the second-stage cylinder 2. The space defined by the first bearing 4, the middle partition 3 and the circumferential outside of the first stage cylinder 1 is a medium pressure chamber 101, the space defined by the second bearing 5, the middle partition 3 and the circumferential outside of the second stage cylinder 2 is a high pressure chamber 102, wherein the refrigerant is discharged into the medium pressure chamber 101 after the compression in the first stage cylinder 1 is completed, then enters the second stage cylinder 2 from the medium pressure chamber 101 through the suction passage 31, and the refrigerant compressed by the second stage cylinder 2 is discharged into the high pressure chamber 102 and is discharged out of the compressor 200 through the high pressure chamber 102.
At least one side in the axial direction of the first-stage cylinder 1 is provided with a first exhaust hole 421, that is, the first-stage cylinder 1 may be provided with the first exhaust hole 421 only on one side in the axial direction, or may be provided with the first exhaust hole 421 on both sides in the axial direction. When the first-stage cylinder 1 is provided with the first exhaust hole 421 only at one side in the axial direction, the first exhaust hole 421 may be provided at the side of the first-stage cylinder 1 facing the first bearing 4, and the first exhaust hole 421 may also be provided at the side of the first-stage cylinder 1 facing the intermediate partition plate 3. In both cases, the compression mechanism 100 needs to add a discharge valve plate on the side of the first stage cylinder 1 where the first discharge hole 421 is provided. When the first-stage cylinder 1 is provided with the first exhaust holes 421 at two axial sides, the exhaust valve plates are required to be additionally arranged at two axial sides of the first-stage cylinder 1, which is equivalent to the superposition of the two conditions, and the structure of the exhaust valve plates at two sides is not repeated for simplifying the description.
As shown in fig. 3, when the first exhaust hole 421 is provided at a side of the first stage cylinder 1 facing the first bearing 4, the first bearing 4 includes a bearing main body 41 and a bearing-side exhaust partition plate 42, the bearing-side exhaust partition plate 42 is provided between the bearing main body 41 and the first stage cylinder 1, the first exhaust hole 421 is provided on the bearing-side exhaust partition plate 42, and a first exhaust passage 422 communicating the first exhaust hole 421 and the medium pressure chamber 101 is defined between the bearing main body 41 and the bearing-side exhaust partition plate 42. The refrigerant having completed the first stage compression is discharged from the first stage compression chamber through the first discharge hole 421 and enters the intermediate pressure chamber 101 along the first discharge passage 422.
As shown in fig. 1-2 and 4, when the first exhaust hole 421 is provided at a side of the first-stage cylinder 1 facing the intermediate partition 3, the intermediate partition 3 includes a main partition 32 and a partition-side exhaust partition 33, the partition-side exhaust partition 33 is provided between the main partition 32 and the first-stage cylinder 1, the first exhaust hole 421 is provided at the partition-side exhaust partition 33, the second suction hole 321 is provided at the main partition 32, and a second exhaust passage 34 communicating the first exhaust hole 421 and the intermediate pressure chamber 101 is defined between the main partition 32 and the partition-side exhaust partition 33.
For example, as shown in fig. 1, a partition plate 3 is provided between the first-stage cylinder 1 and the second-stage cylinder 2, wherein a main partition plate 32 is provided adjacent to the second-stage cylinder 2, a partition plate side exhaust partition plate 33 is provided adjacent to the first-stage cylinder 1, and the partition plate side exhaust partition plate 33 is located between the first-stage cylinder 1 and the main partition plate 32. Preferably, the outlets of the first exhaust passage 422 and the second exhaust passage 34 are both disposed away from the oil pool, whereby the oil discharge amount of the compression mechanism 100 can be reduced, and the lubrication effect of the compression mechanism 100 can be improved.
According to the compressor 200 of the embodiment of the present invention, by providing the bearing-side exhaust partition 42 and/or the partition-side exhaust partition 33, the bearing-side exhaust partition 42 may define the first exhaust passage 422 communicating with the intermediate pressure chamber 101 with the bearing main body 41, and the partition-side exhaust partition 33 may define the second exhaust passage 34 communicating with the intermediate pressure chamber 101 with the main partition 32. The refrigerant after compression completion in the first stage cylinder 1 may enter the intermediate pressure chamber 101 through the first and second discharge passages 422 and 34, thereby increasing the discharge capacity of the compression mechanism 100, reducing the discharge resistance of the compression mechanism 100, and reducing the suction pulsation of the second stage cylinder 2, thereby reducing the operation noise of the compressor 200. The compressor 200 has a simple and compact structure and high practicality.
Here, in order to further understand the specific structure of the compressor 200 in the embodiment of the present invention, the structure in two cases where the first stage cylinder 1 may be provided with the first exhaust hole 421 only at one side in the axial direction will be further described.
When the first exhaust hole 421 may be provided at a side of the first stage cylinder 1 facing the first bearing 4, as shown in fig. 3, a valve installation groove is provided on the bearing side exhaust partition plate 42, the first exhaust hole 421 is provided on a bottom wall of the valve installation groove, and the first exhaust valve assembly 43 is provided in the valve installation groove to be matched with the first exhaust hole 421, thereby making the internal structure of the compression mechanism 100 more compact and enabling the opening/closing of the first exhaust hole 421.
Specifically, a valve installation groove on the bearing-side exhaust partition 42 is provided on a side wall of the bearing-side exhaust partition 42 in contact with the bearing main body 41, the first exhaust valve assembly 43 is installed in the valve installation groove, and an exhaust valve sheet for blocking the first exhaust hole 421 is provided on the first exhaust valve assembly 43. Under normal conditions, the exhaust valve plate cooperates with the first exhaust hole 421 to make the first exhaust hole 421 in a closed state. After the refrigerant is compressed in the compression chamber, the first exhaust valve assembly 43 is opened, the first exhaust hole 421 is opened, and the refrigerant can enter the first exhaust channel 422 from the compression chamber through the first exhaust hole 421, so that the refrigerant can enter the medium pressure chamber 101.
Further, the first exhaust passage 422 is provided with a first communication hole 423 communicating with the intermediate pressure chamber 101 on the outer circumference of the bearing-side exhaust partition plate 42, whereby communication between the first exhaust passage 422 and the intermediate pressure chamber 101 can be achieved, and the refrigerant can be facilitated to enter the intermediate pressure chamber 101. Specifically, the first communication hole 423 is connected to the end of the first exhaust passage 422, and the refrigerant is discharged from the first exhaust hole 421, can flow along the first exhaust passage 422, and finally enters the medium pressure chamber 101 from the first communication hole 423.
Of course, the present invention is not limited thereto, and the first communication hole 423 may be provided on an end surface of the bearing-side exhaust partition plate 42 facing away from the bearing main body 41, and the first communication hole 423 may be provided on an end surface of the bearing main body 41 facing the bearing-side exhaust partition plate 42, which is not particularly limited thereto. When the first exhaust hole 421 may be provided at a side of the first stage cylinder 1 facing the middle partition plate 3, as shown in fig. 4, the partition plate side exhaust partition plates 33 are each provided with a valve installation groove, the first exhaust hole 421 is provided at a bottom wall of the valve installation groove, and the valve installation groove is provided therein with the first exhaust valve assembly 43 engaged with the first exhaust hole 421, thereby making the internal structure of the compression mechanism 100 more compact and enabling the opening/closing of the first exhaust hole 421.
Specifically, the second exhaust passage 34 is provided with the second communication hole 331 communicating with the intermediate pressure chamber 101 at the side of the partition-plate-side exhaust partition plate 33 facing the first-stage cylinder 1, whereby communication between the second exhaust passage 34 and the intermediate pressure chamber 101 can be achieved, and refrigerant can be facilitated to enter the intermediate pressure chamber 101. Specifically, the second communication hole 331 is connected to the end of the second exhaust passage 34, and the refrigerant is discharged from the first exhaust hole 421, flows along the second exhaust passage 34, and finally enters the medium pressure chamber 101 through the second communication hole 331.
Further, the suction passage 31 communicating the second suction hole 321 and the intermediate pressure chamber 101 is defined between the main partition 32 and the partition-side exhaust partition 33, whereby the structure of the suction passage 31 on the intermediate partition 3 can be optimized for easy processing. Specifically, grooves may be provided on opposite side walls of the main partition plate 32 or the partition plate side exhaust partition plate 33, and the main partition plate 32 and the partition plate side exhaust partition plate 33 cooperate so that the grooves form a closed suction passage 31, and the refrigerant in the intermediate pressure chamber 101 may enter the second stage cylinder 2 through the suction passage 31.
In some embodiments of the present invention, the suction passage 31 and the second discharge passage 34 are spaced apart within the middle partition 3, whereby the suction process and the discharge process of the compression mechanism 100 can be achieved independently of each other. Specifically, the suction process of the second-stage cylinder 2 and the discharge process of the first-stage cylinder 1 are independent processes, the first-stage cylinder 1 can discharge the compressed refrigerant into the medium-pressure chamber 101 through the second discharge passage 34 in the discharge process, and the second-stage cylinder 2 can suck the refrigerant in the medium-pressure chamber 101 into the second-stage compression chamber through the suction passage 31 in the suction process.
In some embodiments of the present invention, the suction passage 31 and the second discharge passage 34 communicate within the partition 3, whereby the discharge volume of the first-stage cylinder 1 at the time of discharge can be increased, and the operation noise of the compression mechanism 100 can be reduced. Specifically, when the first stage cylinder 1 discharges the refrigerant gas, the refrigerant enters the second exhaust passage 34 from the first exhaust hole 421, and the refrigerant cannot enter the medium pressure chamber 101 in the first time due to the large flow rate of the refrigerant, and the refrigerant can generate a large impact on the second exhaust passage 34, so that a large working noise is generated. By providing the suction passage 31 and the second discharge passage 34 in communication, when the first stage cylinder 1 discharges the refrigerant gas, the discharge volume of the second discharge passage 34 can be increased, the refrigerant can be buffered, the impact of the refrigerant on the inner wall of the second discharge passage 34 can be reduced, and the operation noise of the compressor 200 can be reduced.
As shown in fig. 6 to 9, at least one of the first and second exhaust passages 422 and 34 is formed as a straight passage or an arc-shaped passage or a circular passage according to some embodiments of the present invention, whereby the versatility and versatility of the middle barrier 3 can be improved. As shown in fig. 6, the first exhaust passage 422 is a straight passage, one end of the first exhaust passage 422 is connected to the first exhaust hole 421, and the other end of the first exhaust passage 422 communicates with the medium pressure chamber 101. As shown in fig. 9, the first exhaust channel 422 and the second exhaust channel 34 are arc-shaped channels, wherein two ends of the first exhaust channel 422 and the second exhaust channel 34 are uniformly communicated. As shown in fig. 7, the first exhaust passage 422 and the second exhaust passage 34 are each arc-shaped passages, wherein one ends of the first exhaust passage 422 and the second exhaust passage 34 communicate.
It is understood that the shapes of the first exhaust passage 422 and the second exhaust passage 34 can be comprehensively set according to the flow rate of the refrigerant in the compression mechanism 100. The first exhaust passage 422 or the second exhaust passage 34 is provided as a straight passage, so that the flow path of the refrigerant can be shortened, and the exhaust efficiency can be improved. The first exhaust passage 422 or the second exhaust passage 34 is configured as an arc passage or a circular passage, which can lengthen the flow path of the refrigerant, has a buffering effect on the refrigerant, can reduce the impact of the refrigerant on the side wall of the exhaust volume, and can reduce the operation noise of the compressor 200.
According to some embodiments of the present invention, the first bearing 4 cooperates with the housing 7 to form the motor chamber 9 and the pump body chamber 10 independent of each other, thereby defining installation spaces of the compression mechanism 100 and the motor 8, respectively, and enabling independent operation of the compression mechanism 100 and the motor 8. For example, as shown in fig. 1, the upper and lower ends of the first bearing 4 are connected to the housing 7, the first bearing 4 partitions the housing 7 into two relatively independent spaces, wherein the pump chamber 10 is located at the left side of the first bearing 4, and the motor chamber 9 is located at the right side of the first bearing 4. The motor chamber 9 is provided with a low-pressure chamber, thereby ensuring the normal operation of the motor 8. The pump cavity 10 is divided into a medium pressure cavity 101 and a high pressure cavity 102 by the middle partition plate 3, the refrigerant compressed by the first-stage cylinder 1 is discharged into the medium pressure cavity 101, the refrigerant in the medium pressure cavity 101 enters the second-stage cylinder 2 through the suction channel 31, the refrigerant is discharged into the high pressure cavity 102 after being compressed by the second-stage cylinder 2, and the refrigerant is discharged out of the compressor 200 through the high pressure cavity 102.
In this way, the interior of the casing 7 of the compressor 200 is divided into the low-pressure chamber, the medium-pressure chamber 101 and the high-pressure chamber 102, and the pressure in the casing 7 decreases in sequence in the axial direction of the crankshaft 6, thereby reducing the pressure difference and reducing the leakage of the refrigerant.
According to some embodiments of the present invention, the casing 7 is provided with a gas-compensating port communicating with the medium pressure chamber 101, so that the energy efficiency of the compressor 200 can be improved. Specifically, when the compressor 200 is in operation, the refrigerant at the high pressure side of the compression system can be introduced into the medium pressure chamber 101 through the air supply port, so that the power consumption of the second stage cylinder 2 for compressing the refrigerant can be reduced. It will be appreciated that the air make-up port is an optional feature and may be selectively configured according to the actual operating requirements of the compressor 200.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A compressor, comprising:
a housing;
a compression mechanism, the compression mechanism comprising:
the first-stage cylinder is internally provided with a first-stage compression cavity;
a second stage cylinder defining a second stage compression chamber therein;
the middle partition plate is clamped between the first-stage cylinder and the second-stage cylinder, and a second air suction hole communicated with the second-stage cylinder is formed in the middle partition plate;
the first bearing is matched with one side, far away from the middle partition plate, of the first-stage cylinder; wherein,
the middle pressure cavity is defined between the shell and the middle partition plate, between the shell and the first bearing and between the shell and the peripheral wall of the first-stage cylinder, and is respectively connected with a first exhaust hole and a second exhaust hole of the first-stage compression cavity, a motor cavity is arranged on one side, away from the middle pressure cavity, of the first bearing in the shell, and the motor cavity is a low-pressure cavity separated from the middle pressure cavity; wherein,
when the first exhaust hole is arranged on one side of the first-stage cylinder, which faces the first bearing, the first bearing comprises a bearing main body and a bearing-side exhaust partition plate, the bearing-side exhaust partition plate is arranged between the bearing main body and the first-stage cylinder, the first exhaust hole is arranged on the bearing-side exhaust partition plate, and a first exhaust channel which is communicated with the first exhaust hole and the medium-pressure cavity is defined between the bearing main body and the bearing-side exhaust partition plate;
when the first exhaust hole is formed in one side, facing the middle partition plate, of the first-stage cylinder, the middle partition plate comprises a main partition plate and a partition plate side exhaust partition plate, the partition plate side exhaust partition plate is arranged between the main partition plate and the first-stage cylinder, the first exhaust hole is formed in the partition plate side exhaust partition plate, the second air suction hole is formed in the main partition plate, and a second exhaust channel which is communicated with the first exhaust hole and the middle pressure cavity is defined between the main partition plate and the partition plate side exhaust partition plate.
2. The compressor of claim 1, wherein the bearing side exhaust partition and the partition side exhaust partition are each provided with a valve mounting groove, the first exhaust hole is provided in a bottom wall of the valve mounting groove, and a first exhaust valve assembly is provided in the valve mounting groove in cooperation with the first exhaust hole.
3. The compressor according to claim 1, wherein the first exhaust passage is provided with a first communication hole communicating with the intermediate pressure chamber on an outer periphery of the bearing-side exhaust baffle plate.
4. The compressor according to claim 1, wherein the second exhaust passage is provided with a second communication hole that communicates with the intermediate pressure chamber at a side of the partition-plate-side exhaust partition plate that faces the first-stage cylinder.
5. The compressor of claim 1, wherein a suction passage is defined between the main diaphragm and the diaphragm-side discharge diaphragm, the suction passage communicating the second suction hole and the intermediate pressure chamber.
6. The compressor of claim 5, wherein the suction passage and the second discharge passage are spaced apart within the septum.
7. The compressor of claim 5, wherein the suction passage and the second discharge passage communicate within the septum.
8. The compressor of claim 1, wherein at least one of the first and second discharge passages is formed as a straight passage or an arc-shaped passage or a circular passage.
9. The compressor of claim 1, wherein the housing is provided with a gas-compensating port communicating with the intermediate pressure chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710944854.9A CN109595166B (en) | 2017-09-30 | 2017-09-30 | Compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710944854.9A CN109595166B (en) | 2017-09-30 | 2017-09-30 | Compressor |
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| Publication Number | Publication Date |
|---|---|
| CN109595166A CN109595166A (en) | 2019-04-09 |
| CN109595166B true CN109595166B (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710944854.9A Active CN109595166B (en) | 2017-09-30 | 2017-09-30 | Compressor |
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| JPS61169686A (en) * | 1985-01-23 | 1986-07-31 | Hitachi Ltd | Scroll compressor |
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| CN106762666A (en) * | 2017-01-24 | 2017-05-31 | 广东美芝制冷设备有限公司 | Compressor and the vehicle with it |
| CN207363878U (en) * | 2017-09-30 | 2018-05-15 | 广东美芝制冷设备有限公司 | Compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5807175B2 (en) * | 2011-03-10 | 2015-11-10 | パナソニックＩｐマネジメント株式会社 | Rotary compressor |
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|---|---|---|---|---|
| JPS61169686A (en) * | 1985-01-23 | 1986-07-31 | Hitachi Ltd | Scroll compressor |
| JPH04219486A (en) * | 1990-12-17 | 1992-08-10 | Matsushita Refrig Co Ltd | Rotary compressor |
| CN1420964A (en) * | 2000-03-30 | 2003-05-28 | 三洋电机株式会社 | Multi-stage compressor |
| CN101153600A (en) * | 2006-09-29 | 2008-04-02 | 富士通将军股份有限公司 | Rotary compressor and heat pump system |
| CN203248363U (en) * | 2013-03-27 | 2013-10-23 | 珠海格力电器股份有限公司 | Double-die compression pump body and double-cylinder compressor using same |
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| CN207363878U (en) * | 2017-09-30 | 2018-05-15 | 广东美芝制冷设备有限公司 | Compressor |
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| Publication number | Publication date |
|---|---|
| CN109595166A (en) | 2019-04-09 |
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