CN115573913A - Compressor and refrigeration equipment - Google Patents
Compressor and refrigeration equipment Download PDFInfo
- Publication number
- CN115573913A CN115573913A CN202211232749.XA CN202211232749A CN115573913A CN 115573913 A CN115573913 A CN 115573913A CN 202211232749 A CN202211232749 A CN 202211232749A CN 115573913 A CN115573913 A CN 115573913A
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- Prior art keywords
- compressor
- shell
- refrigerant
- air suction
- compression
- 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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- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 117
- 238000007906 compression Methods 0.000 claims abstract description 117
- 239000003507 refrigerant Substances 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 230000001502 supplementing effect Effects 0.000 claims 1
- 239000003595 mist Substances 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 7
- 230000029058 respiratory gaseous exchange Effects 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 230000007774 longterm Effects 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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention discloses a compressor and refrigeration equipment, wherein the compressor comprises a shell, a first-stage compression part, a second-stage compression part and an air suction pipe, wherein the upper end of the shell is provided with an air suction port which is arranged on the side part of the shell; the first-stage compression part is arranged in the shell and comprises a first compression cavity and a first exhaust port, and the first compression cavity is communicated with the inner cavity of the shell through the first exhaust port; the second-stage compression part is arranged in the shell and comprises a second compression cavity; the air suction pipe is used for communicating the air suction port with the second compression cavity. The suction port is arranged at the position, located at the upper end, of the side portion of the shell, the distance from the oil liquid level of the inner cavity of the shell is far, the first exhaust port discharges the refrigerant with the oil mist, the oil mist has large inertia and moves upwards, the gaseous refrigerant is discharged from the suction port of the side portion, the gaseous refrigerant and the oil mist can be automatically separated, and liquid is prevented from entering the second compression cavity through the air suction pipe, so that the problem that the existing two-stage compressor is poor in use environment and liquid is compressed when the refrigerant is deposited is solved.
Description
Technical Field
The invention relates to the technical field of refrigeration and compression, in particular to a compressor and refrigeration equipment.
Background
The two-stage compressor can realize higher volumetric efficiency and enthalpy increasing technology, and is widely applied to low-temperature heating and high-temperature refrigerating occasions. At present, for the scheme of two-stage compression, a scheme with high back pressure is mostly adopted, and the technology is relatively mature. And the scheme of medium back pressure is applied less frequently. The first-stage exhaust of the medium back pressure scheme is communicated with the inner cavity of the shell, and the pressure in the shell is small. The secondary compression part directly sucks intermediate pressure gas from the shell to perform secondary compression. The secondary exhaust gas is exhausted out of the compressor through an exhaust pipe and is not communicated with the inner cavity of the shell. Under normal conditions, the compressor can operate normally.
However, when severe conditions occur, the operation state of the compressor changes, the refrigerant is deposited, the liquid level in the compressor shell rises, and the liquid compression of the secondary compression part occurs. If the running time is longer under the severe working condition, the performance of the compressor is seriously influenced, even the compressor has the reliability problem and cannot work.
Disclosure of Invention
The invention mainly aims to provide a compressor and refrigeration equipment, and aims to solve the problems that the existing two-stage compressor is poor in use environment and liquid compression occurs when a refrigerant is deposited.
To achieve the above object, the present invention provides a compressor, wherein the compressor comprises:
the air suction port is arranged on the upper end of the machine shell and is arranged on the side part of the machine shell;
the first-stage compression part is arranged in the shell and comprises a first compression cavity and a first exhaust port, and the first compression cavity is communicated with the inner cavity of the shell through the first exhaust port;
the second-stage compression part is arranged in the shell and comprises a second compression cavity; and (c) a second step of,
and the air suction pipe is used for communicating the air suction port with the second compression cavity.
Optionally, the compressor further comprises a motor assembly arranged in the casing, and the motor assembly is used for driving the pistons of the first-stage compression part and the second-stage compression part to move;
the motor assembly is located below the air suction port, the distance between the air suction port and the upper end face of the motor assembly is d, and d is larger than or equal to 10mm and smaller than or equal to 20mm.
Optionally, the first-stage compression part is disposed at a position below the casing, and the first exhaust port is disposed at a top of the first-stage compression part.
Optionally, an air inlet is further disposed on the casing, the air inlet is communicated with the second compression cavity, and the air suction pipe is communicated with the air suction port and the air inlet and is disposed outside the casing.
Optionally, the compressor further includes a gas-liquid separator and an air feed pipe, the air feed pipe communicates a refrigerant output port of the gas-liquid separator and a refrigerant input port of the primary compression portion, and the gas-liquid separator is configured to separate gaseous refrigerants and convey the gaseous refrigerants to the first compression chamber through the air feed pipe.
Optionally, the pipe diameter of the air supply pipe is D1, and the corresponding pipe diameter at the minimum section of the air suction pipe is D2, where D1 > D2.
Optionally, a buffer cavity is further formed in the casing, and the buffer cavity is communicated with the exhaust port of the secondary compression part.
Optionally, the compressor further includes an enthalpy increasing assembly, and the enthalpy increasing assembly is configured to supplement a refrigerant to the refrigerant flowing into the second compression chamber.
Optionally, the compressor further comprises a gas-liquid separator for providing a refrigerant to the first-stage compression part;
the gas-liquid separator, the enthalpy-increasing assembly and the air suction pipe are arranged at intervals in the circumferential direction of the shell.
The present invention also provides a refrigeration apparatus comprising a compressor, the compressor comprising:
the air suction port is arranged on the upper end of the machine shell and is arranged on the side part of the machine shell;
the first-stage compression part is arranged in the shell and comprises a first compression cavity and a first exhaust port, and the first compression cavity is communicated with the inner cavity of the shell through the first exhaust port;
the second-stage compression part is arranged in the shell and comprises a second compression cavity; and (c) a second step of,
and the air suction pipe is used for communicating the air suction port with the second compression cavity.
In the technical scheme provided by the invention, the first-stage compression part compresses the gaseous refrigerant in the first compression cavity and then discharges the compressed refrigerant to the inner cavity of the shell through the first exhaust port, the refrigerant in the inner cavity of the shell is conveyed to the second compression cavity through the suction pipe through the suction port, and the second-stage compression part compresses the refrigerant in the second compression cavity and then discharges the compressed refrigerant. And the part atomizing fluid can be taken out when first exhaust port discharges the refrigerant, because of the secondary compression portion can form the negative pressure when doing work, make gaseous refrigerant certainly the induction port is inhaled to in the aspiration tube, because of will the induction port sets up the lateral part of casing leads to gaseous refrigerant air current direction to change, becomes the horizontal direction from vertical ascending direction, and vaporific fluid can continue the activity of making progress because inertia is great, thereby can realize autosegregation with gaseous refrigerant, better avoiding appearing fluid and getting into the second compression chamber through the breathing pipe, the liquid compression appears. The suction port is arranged at the position of the side part of the shell at the upper end, so that the problems of severe use environment and liquid compression during refrigerant deposition of the conventional two-stage compressor are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a compressor according to an embodiment of the present invention;
fig. 2 is a partial cross-sectional schematic view of the compressor of fig. 1.
The reference numbers indicate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The two-stage compressor can realize higher volumetric efficiency and enthalpy increasing technology, and is widely applied to low-temperature heating and high-temperature refrigerating occasions. At present, for the scheme of two-stage compression, a scheme with high back pressure is mostly adopted, and the technology is relatively mature. And the scheme of medium back pressure is applied less frequently. The first-stage exhaust of the medium back pressure scheme is communicated with the inner cavity of the shell, and the pressure in the shell is small. The secondary compression part directly sucks intermediate pressure gas from the shell to perform secondary compression. The secondary exhaust gas is exhausted out of the compressor through an exhaust pipe and is not communicated with the inner cavity of the shell. Under normal conditions, the compressor can operate normally. However, when severe conditions occur, the running state of the compressor changes, the refrigerant is deposited, the liquid level in the compressor shell rises, and the liquid compression of the two-stage compression part can occur. If the running time is longer under severe working conditions, the performance of the compressor is seriously influenced, even the compressor has the reliability problem and cannot work.
In order to solve the above problems, the present invention provides a compressor 100, and fig. 1 to 2 show an embodiment of the compressor 100 according to the present invention.
Referring to fig. 1 to 2, the compressor 100 includes a casing 1, a first-stage compression part 2, a second-stage compression part 3 and an air suction pipe 4, the casing 1 extends up and down, an air suction port 11 is formed at an upper end of the casing 1, and the air suction port 11 is formed at a side portion of the casing 1; the primary compression part 2 is arranged in the casing 1, the primary compression part 2 comprises a first compression cavity 21 and a first exhaust port 22, and the first compression cavity 21 is communicated with the inner cavity of the casing 1 through the first exhaust port 22; the two-stage compression part 3 is arranged in the casing 1, and the two-stage compression part 3 comprises a second compression cavity 31; the suction pipe 4 is used for communicating the suction port 11 with the second compression chamber 31.
In the technical scheme provided by the invention, a first-stage compression part 2 compresses gaseous refrigerant in a first compression cavity 21 and then discharges the compressed refrigerant to an inner cavity of a machine shell 1 through a first exhaust port 22, the refrigerant in the inner cavity of the machine shell 1 is conveyed to a second compression cavity 31 through an air suction pipe 4 through an air suction port 11, and a second-stage compression part 3 compresses the refrigerant in the second compression cavity 31 and then discharges the compressed refrigerant, so that the air suction port 11 is arranged at the upper end of the machine shell 1 and has a larger distance from the highest liquid level in the machine shell 1, and when the refrigerant is deposited, the oil and the liquid refrigerant cannot enter the air suction port 11 when the liquid level in the machine shell 1 rises, so that the liquid is prevented from entering the second compression cavity 31 through the air suction pipe 4. And the part of the atomized oil liquid can be brought out when the first exhaust port 22 discharges the refrigerant, because the second-stage compression part 3 can form negative pressure when doing work, so that the gaseous refrigerant is sucked into the suction pipe 4 from the suction port 11, and because the suction port 11 is arranged on the side part of the casing 1, the airflow direction of the gaseous refrigerant is changed to be changed from the vertical upward direction to the horizontal direction, and the atomized oil liquid can continuously move upwards due to larger inertia, so that the automatic separation can be realized with the gaseous refrigerant, the oil liquid is better prevented from entering the second compression cavity 31 through the suction pipe 4, the liquid compression occurs, the condition of the second-stage liquid compression is avoided, and the reliability of the compressor 100 is improved. The suction port 11 is disposed at the upper end of the side of the casing 1, so as to solve the problem of liquid compression when the existing two-stage compressor 100 is in a bad use environment and a refrigerant is deposited.
It should be noted that a crankshaft is disposed in the middle of the compressor 100, a first piston and a second piston are disposed along an upward-downward interval on the periphery of the crankshaft, the first-stage compression portion 2 includes the first piston, a first upper flange and a first cylinder, the second-stage compression portion 3 includes the second piston, a first lower flange and a second cylinder, and a partition plate is disposed between the first piston and the second piston. The first cylinder is provided with a first upper end face and a first lower end face which are opposite to each other, the first upper flange abuts against the first upper end face, and the partition plate abuts against the first lower end face, so that the partition plate, the first upper flange and the first cylinder are enclosed together to form the first compression cavity 21. Similarly, the second cylinder has a second upper end surface and a second lower end surface which are opposite to each other, the partition board abuts against the second upper end surface, and the first lower flange abuts against the second lower end surface, so that the partition board, the first lower flange and the second cylinder enclose together to form the second compression chamber 31. When the crankshaft is driven to rotate by the driving motor, the first piston and the second piston are driven to rotate and move, the crankshaft drives the two pistons to eccentrically rotate, so that the pistons can be far away from and close to the bottom wall of the cylinder, and the refrigerant is compressed, the crankshaft rotates and drives the two pistons to work, and lubrication is needed to be performed by lubricating oil, so that lubricating oil is arranged at the bottom of the inner cavity of the casing 1 of the compressor 100, and when the crankshaft rotates, the lubricating oil drives the bottom oil to enter gaps between the movable parts from holes on the peripheral side of the cylinder body of the cylinder along the peripheral wall of the casing 1, so that lubrication is performed, so that when the refrigerant is compressed, a small amount of oil mist of the lubricating oil is generated, if the refrigerant with the oil mist is brought into the second-stage compression part 3 through the air suction port 11 and the air suction pipe 4, the oil mist is gradually reduced in long-term operation, dry grinding exists between the pistons of the first-stage compression part 2 and the second-stage compression part 3 and moving parts such as the crankshaft, and the loss of the parts is increased. Further, in order to reduce the vibration of the compressor 100, the eccentric portions of the crankshaft may be symmetrically distributed such that the centrifugal force of the eccentric portions is equalized when the crankshaft rotates.
Specifically, because the motor assembly for driving the crankshaft to rotate is arranged in the middle of the inner cavity of the casing, when oil mist flows downward along the inner wall of the casing 1, oil may be deposited on the top of the motor assembly, and the height of the oil storage may generally reach about 5mm, in order to avoid the oil at the top of the motor assembly from entering the air suction port 11, in this embodiment, the compressor further includes a motor assembly 10 arranged in the casing 1, and a motor assembly 10 for driving the pistons of the primary compression part 2 and the secondary compression part 3 to move, where a distance d between the air suction port 11 and the motor assembly 10 is d, where d is greater than or equal to 10mm and less than or equal to 20mm. The arrangement is such that the distance between the suction opening 11 and the upper end face of the motor element 10 is greater than the maximum height of the oil reservoir to avoid hydraulic compression.
Specifically, in the present embodiment, the first-stage compression part 2 is disposed at a lower position of the casing 1, and the first exhaust port 22 is disposed at a top of the first-stage compression part 2. With the arrangement, on the one hand, the inner cavity of the casing 1 is fully utilized for buffering, and on the other hand, the discharge direction of the gas compressed by the primary compression part 2 can be consistent with the whole direction of the air suction port 11, so that the reduction of air suction loss is facilitated, and the flow loss of gaseous refrigerants is avoided.
Further, in this embodiment, the casing 1 is further provided with an air inlet, the air inlet is communicated with the second compression cavity 31, and the air suction pipe 4 is communicated with the air suction port 11 and the air inlet and is arranged outside the casing 1. Because the first-stage compression part 2 and the second-stage compression part 3 do work and can generate heat, the temperature inside the casing 1 is higher, so will the breathing pipe 4 is located outside the casing 1, the breathing pipe 4 fully produces the heat exchange with the outside atmosphere, is favorable to the heat dissipation of breathing pipe 4 improves the efficiency of breathing in to reach the effect of increase second grade inspiratory capacity.
Further, in this embodiment, the compressor 100 further includes a gas-liquid separator 5 and an air feed pipe 6, and since a phase change of a refrigerant may occur due to factors such as temperature in a flow path of heat exchange, in order to enable the compressor 100 to compress a gaseous refrigerant and avoid liquid compression, the gas-liquid separator 5 may separate gaseous and liquid states of the refrigerant, and the air feed pipe 6 communicates with a refrigerant output port of the gas-liquid separator 5 and a refrigerant input port of the primary compression portion 2, and conveys the separated gaseous refrigerant to the first compression cavity 21 through the air feed pipe 6.
Further, since the gaseous refrigerant is in a state before entering the primary compression part 2 and is different from the state before entering the secondary compression part 3, after being compressed by the primary compression part 2, the gaseous refrigerant has a high density and a small volume, and in order to avoid gas flow loss, in this embodiment, the pipe diameter of the gas supply pipe 6 is D1, and the pipe diameter corresponding to the minimum cross section of the gas suction pipe 4 is D2, where D1 > D2. So set up for the discharge capacity of pipe diameter and the flow looks adaptation of the gaseous refrigerant of passing through avoid breathing pipe 4 sets up the diameter too big and the flow mismatch the time gas can produce the vortex, consume energy.
Further, in order to avoid a flow loss of the refrigerant in a gaseous state, in the present embodiment, a buffer chamber 12 is further formed in the casing 1, and the buffer chamber 12 communicates with an exhaust port of the secondary compression part 3. Since the magnitude of the gas flow loss is proportional to the square of the gas flow rate, reducing the flow rate of the gaseous refrigerant discharged from the secondary compression part 3 reduces the gas flow loss, and in order to reduce the flow rate of the discharged refrigerant, the buffer chamber 12 has a large volume and provides a buffer space for the gaseous refrigerant to flow, so that the flow loss of the gaseous refrigerant is reduced.
Further, when the compressor 100 encounters a low-temperature working condition, the compression ratio becomes large under the ultra-low-temperature operation, so that the exhaust temperature is continuously increased, and a potential safety hazard is formed on the unit after the compressor 100 is operated for a long time. The vapor supplement and enthalpy increase are realized by adopting a two-stage throttling middle gas injection technology and a flash evaporator for gas-liquid separation. The compressor 100 is compressed and mixed cooled by air injection at middle and low pressure, and then normally compressed at high pressure, so that the displacement of the compressor 100 is increased, the purpose of improving the heating capacity in a low-temperature environment is achieved, the enthalpy increasing component 7 can supplement a refrigerant at middle and high temperature and pressure, the compressor 100 can be supplemented with air and enthalpy, the heating capacity of the system under a low-temperature working condition can be effectively improved, the exhaust temperature of the compressor 100 is prevented from being too high, the operation stability of a unit under a low-temperature working condition is ensured, and the performance and the reliability of the compressor 100 are improved.
It should be noted that the output port of the refrigerant output from the enthalpy-increasing component 7 may be communicated with the inner cavity of the casing 1, may be disposed on the pipeline of the air suction pipe 4, and is communicated with the air suction pipe 4, or may be directly communicated with the second compression cavity 31, so as to finally realize the refrigerant supplement in the second compression cavity 31. Therefore, the specific position of the enthalpy increasing assembly 7 is not limited herein.
Further, in order to make the structure of the compressor 100 more compact, in this embodiment, the compressor 100 further includes a gas-liquid separator 5 for supplying a refrigerant to the first-stage compression part 2; the gas-liquid separator 5, the enthalpy increasing assembly 7 and the air suction pipe 4 are arranged at intervals in the circumferential direction of the casing 1. So set up for the overall arrangement is compacter succinct.
The present invention further provides a refrigeration device, which may be an air conditioner or a refrigerator, and the refrigeration device includes the compressor 100, and the specific structure of the compressor 100 refers to the foregoing embodiments, and since the compressor 100 of the refrigeration device employs all technical solutions of all the foregoing embodiments, at least all beneficial effects brought by the technical solutions of the foregoing embodiments are provided, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (10)
1. A compressor, comprising:
the air suction port is arranged on the upper end of the machine shell and is arranged on the side part of the machine shell;
the first-stage compression part is arranged in the shell and comprises a first compression cavity and a first exhaust port, and the first compression cavity is communicated with the inner cavity of the shell through the first exhaust port;
the second-stage compression part is arranged in the shell and comprises a second compression cavity; and the number of the first and second groups,
and the air suction pipe is used for communicating the air suction port with the second compression cavity.
2. The compressor of claim 1, further comprising a motor assembly disposed in the casing, wherein the motor assembly is configured to drive the pistons of the first-stage compression part and the second-stage compression part to move;
the motor component is positioned below the air suction port, the distance between the air suction port and the upper end face of the motor component is d, and d is larger than or equal to 10mm and smaller than or equal to 20mm.
3. The compressor as claimed in claim 1, wherein said first stage compression part is provided at a lower position of said casing, and said first discharge port is provided at a top of said first stage compression part.
4. The compressor of claim 1, wherein the casing further has an inlet port, the inlet port is communicated with the second compression chamber, and the suction pipe is communicated with the suction port and the inlet port and is disposed outside the casing.
5. The compressor as claimed in claim 1, further comprising a gas-liquid separator and a gas-feeding pipe, wherein the gas-feeding pipe communicates with a refrigerant output port of the gas-liquid separator and a refrigerant input port of the primary compression part, and the gas-liquid separator is configured to separate gaseous refrigerant and feed the gaseous refrigerant to the first compression cavity through the gas-feeding pipe.
6. The compressor of claim 5, wherein the pipe diameter of the air feeding pipe is D1, and the corresponding pipe diameter at the minimum cross section of the air suction pipe is D2, wherein D1 > D2.
7. The compressor as claimed in claim 1, wherein a buffer chamber is further formed in the casing, the buffer chamber being communicated with a discharge port of the secondary compression part.
8. The compressor of claim 1, further comprising an enthalpy increasing assembly for supplementing refrigerant to the refrigerant flowing into the second compression chamber.
9. The compressor as claimed in claim 8, further comprising a gas-liquid separator for supplying a refrigerant to the first-stage compression part;
the gas-liquid separator, the enthalpy-increasing assembly and the air suction pipe are arranged at intervals in the circumferential direction of the shell.
10. A refrigeration appliance comprising a compressor as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211232749.XA CN115573913A (en) | 2022-10-09 | 2022-10-09 | Compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211232749.XA CN115573913A (en) | 2022-10-09 | 2022-10-09 | Compressor and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115573913A true CN115573913A (en) | 2023-01-06 |
Family
ID=84584507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211232749.XA Pending CN115573913A (en) | 2022-10-09 | 2022-10-09 | Compressor and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115573913A (en) |
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2022
- 2022-10-09 CN CN202211232749.XA patent/CN115573913A/en active Pending
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