CN108071590B - Cylinder, compression mechanism and compressor - Google Patents
Cylinder, compression mechanism and compressor Download PDFInfo
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- CN108071590B CN108071590B CN201810107258.XA CN201810107258A CN108071590B CN 108071590 B CN108071590 B CN 108071590B CN 201810107258 A CN201810107258 A CN 201810107258A CN 108071590 B CN108071590 B CN 108071590B
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- 230000006835 compression Effects 0.000 title claims abstract description 29
- 238000007906 compression Methods 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims description 25
- 230000007704 transition Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000003507 refrigerant Substances 0.000 description 25
- 238000005057 refrigeration Methods 0.000 description 22
- 238000010438 heat treatment Methods 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- 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
-
- 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
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston 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
- F04C2240/00—Components
- F04C2240/10—Stators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses an air cylinder, a compression mechanism and a compressor. The air valve mounting groove is at least opened at one axial side of the air cylinder to mount an air valve assembly, and the size of the air valve mounting groove in the thickness direction of the slide sheet groove is larger than the thickness of the slide sheet groove. According to the cylinder improved in the embodiment of the invention, not only the second working chamber for compressing gas by using the sliding sheet is provided, but also the gas valve mounting groove for mounting the gas valve assembly is provided, so that a feasible structural scheme is provided for the normal operation of the second working chamber. The energy efficiency is improved, the manufacturing is simple, the installation is reliable, and the requirement of high cost performance can be met.
Description
Technical Field
The invention relates to the technical field of compression equipment, in particular to an air cylinder, a compression mechanism and a compressor.
Background
In winter, due to large indoor and outdoor temperature difference, the heating capacity of the air conditioning system is greatly reduced in a low-temperature environment, and the requirement of a user on heat cannot be met. The reason is as follows: in a first low-temperature environment, the density of a refrigerant at a suction port of a compressor is low, so that the suction quantity of the refrigerant is reduced, and the heating quantity of an air conditioning system is further influenced; secondly, because the difference between the indoor temperature and the outdoor temperature is large, the difference between the evaporation temperature and the condensation temperature of the air conditioning system is very different, a large amount of gas can be flashed after throttling, so that the refrigerant distribution among different flow paths of the evaporator is uneven, and the heat exchange efficiency of the evaporator is influenced.
In order to solve the above problems, in recent years, a technology of applying a gas refrigerant to a compressor and a refrigeration cycle in an injection manner has attracted attention, and particularly, research on characteristics of a two-cylinder rotary compressor has been advanced. However, the injection technique using the twin-cylinder rotary compressor significantly increases the cost of the compressor, and also causes a low cost performance if the improvement of energy efficiency or heating capacity is not significant.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a cylinder, in which a piston, a sliding vane and a valve assembly can be disposed, so that the cylinder has two compression chambers.
Another object of the present invention is to provide a compression mechanism having the above cylinder.
Another object of the present invention is to provide a compressor having the above-described compression mechanism.
According to the air cylinder provided by the embodiment of the invention, an air cylinder cavity, a slide sheet groove and an air valve installation groove are formed on the air cylinder, the air cylinder cavity is formed into a cylindrical cavity, the inner end of the slide sheet groove is communicated with the air cylinder cavity, the air valve installation groove is formed at the outer end of the slide sheet groove and is communicated with the slide sheet groove, the air valve installation groove is opened at least at one axial side of the air cylinder to install an air valve assembly, and the size of the air valve installation groove in the thickness direction of the slide sheet groove is larger than the thickness of the slide sheet groove.
According to the cylinder improved in the embodiment of the invention, not only the second working chamber for compressing gas by using the sliding sheet is provided, but also the gas valve mounting groove for mounting the gas valve assembly is provided, so that a feasible structural scheme is provided for the normal operation of the second working chamber. The energy efficiency is improved, the manufacturing is simple, the installation is reliable, and the requirement of high cost performance can be met.
In some embodiments, a surface of the valve installation groove facing the cylinder cavity is formed as a smooth plane.
In some embodiments, the cross section perpendicular to the axis of the air valve installation groove is formed in a rectangular shape, or a trapezoidal shape, or a semicircular shape or an oblong shape.
In some embodiments, the inner peripheral corners of the valve installation grooves are in arc transition connection, and the joints of the valve installation grooves and the slide sheet grooves are in arc transition connection.
In some embodiments, a portion of the outer peripheral wall of the cylinder is formed to extend radially outward as a first thickened portion on which the valve mounting groove is located.
In some embodiments, a portion of the outer peripheral wall of the cylinder opposite to the valve installation groove extends radially outward to form a second thickened portion.
In some embodiments, a surface of the valve installation groove facing the cylinder chamber is formed as a plane parallel to an outer peripheral surface of the second thickened portion.
A compression mechanism according to an embodiment of the present invention includes: the cylinder is the cylinder according to the embodiment of the invention; the piston is rotatably arranged in the cylinder cavity; the sliding piece is movably arranged in the sliding piece groove, and the head end of the sliding piece is abutted against or connected with the outer peripheral wall of the piston; the air valve assembly is arranged in the air valve mounting groove; the part of the cylinder cavity, which is positioned on the outer side of the piston, forms a first working cavity, and the part of the sliding sheet groove, which is positioned between the sliding sheet and the air valve assembly, forms a second working cavity.
According to the compression mechanism provided by the embodiment of the invention, not only is a second working chamber for compressing gas by using the sliding piece provided, but also an air valve installation groove for installing an air valve assembly is provided, so that a feasible structural scheme is provided for the normal operation of the second working chamber. The manufacturing is simple, the installation is reliable, and the requirement of high cost performance can be met.
The compressor according to the embodiment of the present invention includes the compression mechanism according to the above-described embodiment of the present invention.
The compressor provided by the embodiment of the invention has the advantages of high cost performance, simplicity in manufacturing and reliability in installation.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic cross-sectional structural view of a cylinder according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an air valve mounting groove according to one embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an air valve mounting groove according to another embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an air valve mounting groove according to yet another embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of an air valve mounting groove according to yet another embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a compression mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a compression mechanism according to one embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a compression mechanism according to another embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a compression mechanism according to yet another embodiment of the present invention;
FIG. 10 is a schematic structural cross-sectional view of a slider according to an embodiment of the present invention;
fig. 11 is a schematic view of a refrigeration apparatus according to an embodiment of the present invention.
Reference numerals:
100: a refrigeration device;
1: a first heat exchanger; 2: a second heat exchanger;
3: a flash evaporator; 31: an inlet; 32: a first outlet; 33: a second outlet;
4: a compressor;
40: a compression mechanism;
41: a cylinder; 410: a cylinder cavity; 411: a first working chamber; 412: a second working chamber;
413: a first air intake port; 414: a first exhaust port; 415: a slide groove; 416: an air valve mounting groove;
4161: a second air suction port; 4162: a second exhaust port;
417: a first thickened portion; 418: a second thickened portion;
42: a piston; 421: a groove;
43: sliding blades; 431: a protrusion; 432: a magnet piece;
44: an air valve assembly; 441: an extension portion; 442: an air suction passage;
45: a spring;
5: a first throttling element; 6: a second throttling element;
7: a control valve; 71: a first valve port; 72: a second valve port; 73: a third valve port; 74: and a fourth valve port.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The structure of the cylinder 41 according to the embodiment of the present invention is described below with reference to fig. 1 to 6.
According to the cylinder 41 of the embodiment of the present invention, as shown in fig. 1 and 6, a cylinder cavity 410, a slide sheet groove 415 and a valve installation groove 416 are formed on the cylinder 41, the cylinder cavity 410 is formed into a cylindrical cavity, an inner end of the slide sheet groove 415 is communicated with the cylinder cavity 410, the valve installation groove 416 is provided at an outer end of the slide sheet groove 415 and is communicated with the slide sheet groove 415, the valve installation groove 416 is opened at least at one axial side of the cylinder 41 to install the valve assembly 44, a dimension of the valve installation groove 416 in a thickness direction of the slide sheet groove 415 is larger than a thickness of the slide sheet groove 415, and a first suction port 413 communicated with the cylinder cavity 410 and a second suction port 4161 communicated with the valve installation groove 416 are provided on a peripheral wall.
Here, it should be noted that the cylindrical cylinder chamber 410 has a central axis, an inner end of the slide groove 415 refers to an end of the slide groove 415 toward the central axis, and an outer end of the slide groove 415 refers to an end of the slide groove 415 away from the central axis.
In addition, in the description of the present invention, the terms "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the embodiment of the present invention, as shown in fig. 1, the dimension of valve mounting groove 416 in the thickness direction of slide groove 415 is larger than the thickness of slide groove 415, so that valve mounting groove 416 has enough space to mount valve assembly 44, and valve assembly 44 can be in sealing fit with slide groove 415.
In order to understand the structural improvement of the cylinder 41 according to the embodiment of the present invention, the application of the improved cylinder 41 to the compression mechanism 40 will be described herein with reference to fig. 1 and 6. Specifically, a piston 42, a sliding vane 43 and a valve assembly 44 are fitted in the cylinder 41, the piston 42 rolls along the inner peripheral wall of the cylinder cavity 410, the sliding vane 43 is movably disposed in a sliding vane groove 415, the head end of the sliding vane 43 abuts against the outer peripheral wall of the piston 42, and the valve assembly 44 is disposed in a valve mounting groove 416.
The portion of the cylinder chamber 410 located outside the piston 42 forms a first working chamber 411, the portion of the slide groove 415 located between the slide 43 and the valve assembly 44 forms a second working chamber 412, the compression mechanism 40 is provided with a first air intake port 413 and a first air exhaust port 414 which are communicated with the first working chamber 411, the compression mechanism 40 is provided with a second air intake port 4161 and a second air exhaust port 4162 which are communicated with the second working chamber 412, and the valve assembly 44 is used for respectively controlling the opening and closing of the second air intake port 4161 and the second air exhaust port 4162.
It will be appreciated that as piston 42 rolls, sliding or oscillating slide 43 within slide slot 415, reciprocating slide 43 changes the volume of second working chamber 412 as piston 42 rolls, thereby alternately decreasing and increasing the air pressure within second working chamber 412. When the air pressure in the second working chamber 412 is less than the predetermined value, the valve assembly 44 opens the second suction port 4161, so that the second working chamber 412 sucks the gas refrigerant. When enough refrigerant gas is sucked, the gas valve assembly 44 can close the second suction port 4161; the volume of the second working chamber 412 can be reduced and then the gas refrigerant can be gradually compressed; when the air pressure in the second working chamber 412 is greater than the predetermined value, the valve assembly 44 opens the second outlet 4162 to discharge the high-pressure refrigerant in the second working chamber 412. By circulating in this manner, the refrigerant can be compressed by the reciprocating slide piece 43.
It can be seen that cylinder 41 modified in the present embodiment of the invention not only provides second working chamber 412 for compressing gas using sliding vane 43, but also provides valve mounting slot 416 for mounting valve assembly 44, providing a feasible configuration for normal operation of second working chamber 412.
In the example of FIG. 1, the first suction port 413 and the first discharge port 414 are located on both sides of the vane slot 415.
In the embodiment of the present invention, the thickness of the cylinder 41 is increased at the position where the valve installation slot 416 is disposed, so that the overall wall thickness of the cylinder 41 is not too thick, and the arrangement of the valve installation slot 416 is not affected.
Specifically, as shown in fig. 1, a part of the outer peripheral wall of the cylinder 41 is formed to extend radially outward as a first thickened portion 417, and the valve installation groove 416 is located on the first thickened portion 417.
More specifically, as shown in fig. 1, the first suction port 413 is also formed on the first thickened portion 417.
In some embodiments, a portion of the outer peripheral wall of the cylinder 41 opposite to the valve installation groove 416 is extended radially outward to form a second thickened portion 418, so that the cylinder 41 can be fixed to the casing of the compressor by the first thickened portion 417 and the second thickened portion 418.
Specifically, as shown in fig. 1, a surface S1 of the valve mounting groove 416 facing the cylinder chamber 410 is formed as a plane parallel to the outer peripheral surface S2 of the second thickened portion 418.
In a conventional compressor, the outer peripheral surfaces of the first thickened portion and the second thickened portion are generally provided as circular arc surfaces, and the cylinder is attached to the inner peripheral wall of the housing by the two thickened portions. However, in the embodiment of the present invention, since the valve assembly 44 is installed in the valve installation slot 416, the valve assembly 44 needs to ensure a certain airtight fit relation with the surface S1 of the valve installation slot 416 facing the cylinder cavity 410. For this purpose, in the embodiment of the present invention, the outer circumferential surface S2 of the second thickened portion 418 is processed into a flat surface, and then the surface S1 of the valve mounting groove 416 facing the cylinder chamber 410 is processed into a parallel surface with the outer circumferential surface S2.
Specifically, to ensure a good seal between the mating surface of the valve assembly 44 and the surface S1, a suitable reference surface on the cylinder 41 needs to be selected. Here, the outer peripheral surface S2 of the second thickened portion 418 is selected as the reference surface, which facilitates the adjustment of the position of the subsequent processing tool.
For example, when the valve assembly 44 is bolted to the cylinder 41, holes need to be drilled in the cylinder 41. If the hole is distorted, the valve assembly 44 is easily separated from the surface S1 when it is connected to the cylinder 41. Therefore, the outer peripheral surface S2 of the second thickened portion 418 is selected as a machining reference surface, and the surface S1 of the valve mounting groove 416 facing the cylinder chamber 410 is parallel to S2 as much as possible when machining. During the drilling, the cylinder 41 can be horizontally placed, the outer peripheral surface S2 of the second thickened portion 418 contacts the workbench, so that the outer peripheral surface S2 serves as a drilling reference surface, that is, the surface S1 of the valve mounting groove 416 facing the cylinder cavity 410 serves as a reference surface, and thus, the accurate drilling position can be ensured during the adjustment of the processing tool (for example, a drill).
In some embodiments of the present invention, as shown in fig. 1, the vane slot 415 is formed as a square slot, and the vane slot 415 extends in a radial direction of the cylinder chamber 410. The surface S1 of the valve mounting groove 416 facing the cylinder chamber 410 is perpendicular to the extending direction of the slide groove 415, and is equivalent to the surface S1 of the valve mounting groove 416 arranged along the direction parallel to the tangent of the cylinder chamber 410.
In different embodiments, the cross section of the valve installation slot 416 can be configured in different shapes, and can be selected according to actual needs, as long as the surface S1 of the valve installation slot 416 facing the cylinder cavity 410 is formed into a smooth plane.
For example, in fig. 2, the valve installation groove 416 is formed in a rectangular shape in cross section perpendicular to the axis, so that the installation space is large and the valve assembly 44 is easily assembled.
For example, in fig. 3, the cross section perpendicular to the axis of the valve installation groove 416 is formed in a trapezoid shape, with the bottom of the trapezoid facing the cylinder chamber 410 and the top of the trapezoid facing away from the cylinder chamber 410. That is, the width of the valve installation groove 416 is gradually reduced in a direction away from the cylinder chamber 410, so that the outer wall of the cylinder 41 can maintain a certain thickness, thereby securing the rigidity and strength of the cylinder 41.
For example, in fig. 4, the cross section of the valve installation groove 416 perpendicular to the axis is formed in an oblong shape, that is, the cross section is substantially rectangular, and both ends of the length of the oblong shape are connected to a semicircle.
For example, in fig. 5, valve mounting slot 416 is formed in a semi-circular cross-section perpendicular to the axis, which shape of valve mounting slot 416 accommodates a semi-circular profile of valve assembly 44.
Of course, in the embodiment of the present invention, the cross section of the valve installation groove 416 may also be formed in other shapes, which is not limited herein.
Advantageously, the valve mounting groove 416 is in arc transition connection at the inner peripheral corner, and the valve mounting groove 416 is in arc transition connection with the slide plate groove 415 at the connection point. Therefore, the air valve mounting groove 416 can be conveniently processed, and the concentrated internal stress generated at the joint is avoided, so that the integral rigidity of the air cylinder 41 is ensured.
The air cylinder 41 disclosed by the embodiment of the invention is simple to manufacture and reliable to mount, and can meet the requirement of high cost performance.
A compression mechanism 40 according to an embodiment of the present invention is described below with reference to fig. 1, 6 to 10.
The compression mechanism 40 according to the embodiment of the present invention includes: the cylinder is the cylinder 41 according to the above embodiment of the present invention, and details of the structure of the cylinder 41 are not repeated here. Piston 42 is rotatably disposed in cylinder chamber 410, slide 43 is movably disposed in slide groove 415, the head end of slide 43 is stopped against the outer peripheral wall of piston 42, and valve assembly 44 is disposed in valve mounting groove 416.
Specifically, a portion of cylinder chamber 410 located outside piston 42 forms a first working chamber 411, and a portion of vane slot 415 located between vane 43 and valve assembly 44 forms a second working chamber 412.
Specifically, the air valve unit 44 is provided with an air suction passage 442 for communicating the second air suction port 4161 with the vane groove 415, and the air valve unit 44 is provided with an air suction control unit (not shown) for opening and closing the air suction passage 442.
The operation state of the compressor 4 having the compression mechanism 40 of the embodiment of the present invention applied to the cooling device 100 will be described with reference to fig. 11, and the compressor 4 may be applied to an air conditioning system, and may also be applied to other cooling/heating systems, such as a water heater, a refrigerator, and the like. The refrigeration apparatus 100 may be a single-cooling system, and the refrigeration apparatus 100 may also be a heat pump system.
As shown in fig. 11, a refrigeration apparatus 100 according to an embodiment of the present invention includes a first heat exchanger 1, a second heat exchanger 2, a flash evaporator 3, and a compressor 4.
The flash evaporator 3 is connected between one end (e.g., left end in fig. 11) of the first heat exchanger 1 and one end (e.g., left end in fig. 11) of the second heat exchanger 2. The flash evaporator 3 is used for gas-liquid separation of the refrigerant in the two-phase region, and for example, in the example of fig. 11, the flash evaporator 3 has an inlet 31, a first outlet 32, and a second outlet 33, the inlet 31 is connected to the one end of the first heat exchanger 1, and the first outlet 32 is connected to the one end of the second heat exchanger 2.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Further, the refrigeration apparatus 100 further includes a first throttling member 5 and a second throttling member 6, the first throttling member 5 is connected between the above-mentioned one end of the first heat exchanger 1 and the inlet 31 of the flash evaporator 3, and the second throttling member 6 is connected between the above-mentioned one end of the second heat exchanger 2 and the first outlet 32 of the flash evaporator 3. The first throttling element 5 and the second throttling element 6 are used for throttling and depressurizing the refrigerant in the refrigeration device 100.
Referring to fig. 11 in combination with fig. 6, a compression mechanism 40 of the compressor 4 includes a cylinder 41, a piston 42, and a vane 43, and the cylinder 41 is formed with a first working chamber 411 and a second working chamber 412. A cylinder chamber 410 is formed in the cylinder 41, the piston 42 is disposed in the cylinder chamber 410, the piston 42 is rollable along an inner wall of the cylinder chamber 410, the slide sheet 43 is movably disposed in the slide sheet groove 415, and a head portion of the slide sheet 43 (i.e., an end of the slide sheet 43 adjacent to the center of the cylinder 41) is adapted to abut against or be connected to an outer peripheral wall of the piston 42. The cylinder chamber 410 is formed with a first intake port 413 and a first exhaust port 414, and the first intake port 413 is connected to the other end (e.g., the right end in fig. 11) of the second heat exchanger 2.
As shown in fig. 11, a sliding vane slot 415 and an air valve installation slot 416 communicated with the sliding vane slot 415 are formed on the cylinder 41, wherein the sliding vane slot 415 is located at the tail part of the sliding vane 43 (i.e. the end of the sliding vane 43 away from the center of the cylinder 41) and is matched with the air valve assembly 44 to form a second working chamber 412, the air valve assembly 44 is formed with a second suction port 4161 and a second exhaust port 4162, the second suction port 4161 is connected with the flash evaporator 3, for example, as shown in fig. 11, the second suction port 4161 is connected with the second outlet 33 of the flash evaporator 3 to suck the separated saturated steam into the second working chamber 412 instead of entering the second heat exchanger 2 for heat exchange. The first exhaust port 414 and the second exhaust port 4162 are both connected to the other end of the first heat exchanger 1.
The sealing surface of second working chamber 412, except for the end of the sliding vane and valve assembly 44, may be sealed on both sides by main and auxiliary bearings located at both axial ends of cylinder 41. As shown in fig. 10, portions of the main bearing and the sub bearing corresponding to the second working chamber 412 may be provided with outwardly extending extensions 441. The second working chamber 412 achieves the change of the volume of the second working chamber 412 through the reciprocating linear motion of the sliding vane 43, so as to suck and compress the refrigerant. At this time, the second working chamber 412 is sucked only through the second suction port 4161 and is discharged through the second discharge port 4162.
Further, the refrigeration device 100 may further include a control valve 7, such as a four-way valve, according to the actual requirement of the refrigeration device 100, so as to achieve the purpose of cold-hot switching. Specifically, the control valve 7 has a first port 71, a second port 72, a third port 73, and a fourth port 74, the first port 71 being connected to the other end of the first heat exchanger 1, the second port 72 being connected to the first exhaust port 414 and the second exhaust port 4162, the third port 73 being connected to the first intake port 413, and the fourth port 74 being connected to the other end of the second heat exchanger 2. When the first port 71 is communicated with the second port 72 and the third port 73 is communicated with the fourth port 74, the refrigeration device 100 performs refrigeration; when the first port 71 and the third port 73 communicate with each other and the second port 72 and the fourth port 74 communicate with each other, the refrigeration apparatus 100 performs heating.
Of course, the four-way valve may not be provided, and in this case, the refrigeration apparatus 100 may have only a refrigeration function.
The operation of the refrigeration apparatus 100 according to the embodiment of the present invention will be described with reference to fig. 11 in conjunction with fig. 1, 2 and 5.
The refrigerant flowing through the second heat exchanger 2 flows to the first air suction port 413 after being overheated, that is, the refrigerant flowing through the second heat exchanger 2 enters the first working chamber 411 through the first air suction port 413 after being heated by the ambient temperature, the compressor is operated to compress the sucked refrigerant, and the compressed refrigerant is discharged from the first air discharge port 414. The gaseous refrigerant separated in the flash evaporator 3 enters the second working chamber 412 through the second suction port 4161, compresses the refrigerant in the second working chamber 412 by the reciprocating linear motion of the slide plate 43, and is discharged from the second discharge port 4162.
The refrigerants discharged after being compressed by the first working chamber 411 and the second working chamber 412 can be mixed inside the compressor or outside the compressor, the invention is not particularly limited to this, the mixed refrigerants flow to the first heat exchanger 1 together, and the condensation is realized after the heat exchange of the first heat exchanger 1; as shown in fig. 11, the liquid refrigerant after heat exchange is throttled to a required intermediate pressure by the first throttling element 5, then gas-liquid separation is performed in the flash evaporator 3, the separated liquid refrigerant reaches a saturated state and enters the second throttling element 6 again for throttling, and finally reaches an evaporation pressure value and enters the second heat exchanger 2 for evaporation.
If the refrigeration apparatus 100 includes the control valve 7, such as a four-way valve, and the refrigeration apparatus 100 switches from the cooling to the heating function, the refrigerant discharged after being compressed in the first working chamber 411 and the second working chamber 412 may be mixed and flow to the second heat exchanger 2, and then throttled by the second throttling element 6, the throttled gas-liquid mixture may flow to the flash evaporator 3 to be separated, the separated gas is sucked into the second working chamber 412 through the second suction port 4161 to be compressed, the liquid is throttled again by the first throttling element 5 to the evaporation pressure and then enters the first heat exchanger 1 to be evaporated, and finally, the evaporated low-pressure gas is superheated and then sucked into the first working chamber 411 through the first suction port 413 to be compressed.
Optionally, the refrigerant in the refrigeration device 100 is at least one of HCFC, HFC, HC and HFO.
Therefore, the gas refrigerant injection mode is applied to the single cylinder 41, the rolling rotor type compression of the first working cavity 412 formed by the inner diameter of the cylinder and the outer diameter of the roller is realized, the sliding vane linear type compression of the second working cavity 412 formed by the sliding vane slot 416 and the air valve installation slot 416 is realized, the rolling rotor type compression and the sliding vane linear type compression are simultaneously realized on the single-cylinder compressor, the energy efficiency of the refrigerating device 100 is improved, meanwhile, the compressor is simple to manufacture, safe and reliable, and the cost is greatly saved. It is understood that the compressor according to the embodiment of the present invention may also be a multi-cylinder compressor, in which one cylinder or a plurality of cylinders adopt the technology of the embodiment of the present invention.
Moreover, when the refrigeration device 100 has two functions of refrigeration and heating and is applied to an air conditioning system, the heating capacity of the air conditioning system in a low-temperature environment is greatly improved under the condition of large indoor and outdoor temperature difference, and the requirement of a user on heat can be effectively met.
The refrigerating device 100 provided by the embodiment of the invention can meet the requirement of high cost performance, and has the advantages of simple manufacture, safety and reliability.
In the cylinder assembly 44 of the embodiment of the present invention, as shown in fig. 7, a groove 421 is formed on the piston 42, a head portion of the sliding piece 43 has a protrusion 431, the protrusion 431 is fitted in the groove 421, a wrap angle of the groove 421 is α, and α satisfies: alpha is more than 180 deg. For example, as shown in fig. 7, the groove 421 is formed by a portion of the outer peripheral wall of the piston 42 being recessed inward, the groove 421 is preferably an arc-shaped groove, and the shape of the protrusion 431 is preferably adapted to the shape of the groove 421, so that by fitting the protrusion 431 into the groove 421 and making the groove 421 surround the protrusion 431 at an angle α > 180 °, it is effectively ensured that the sliding piece 43 is not separated from the piston 42 at all times when the compressor is operated, and thus, air leakage between the suction side and the discharge side of the first working chamber 411 can be prevented.
According to another embodiment of the present invention, as shown in fig. 9, the head of the slide 43 is provided with a magnet piece 432. Therefore, when the compressor starts to work, the gas pressure on the tail of the sliding sheet 43 is approximately equal to the gas pressure on the head of the sliding sheet 43, the magnet piece 432 is installed on the head of the sliding sheet 43, and the piston 42 is made of a material (such as iron) suitable for being magnetically attracted with the magnet piece 432, so that the sliding sheet 43 is in contact with the piston 42 when the compressor starts, and the reliable operation of the compressor is guaranteed. Specifically, the head of the slide 43 may be formed with a receiving groove for receiving the magnet piece 432.
Further, as shown in fig. 8, the inner end of the slide 43 is provided with a spring 45. Therefore, when the compressor is started, the tail of the sliding sheet 43 is approximately equal to the gas pressure borne by the head of the sliding sheet 43, and the spring 45 is arranged in the second working chamber 412, so that the sliding sheet 43 is in contact with the piston 42 during starting, and the reliable operation of the compressor is guaranteed.
Other constructions and operations of the refrigeration apparatus 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The cylinder is characterized in that a cylinder cavity, a sliding sheet groove and a valve installation groove are formed in the cylinder, the cylinder cavity is formed into a cylindrical cavity, the inner end of the sliding sheet groove is communicated with the cylinder cavity, the valve installation groove is formed in the outer end of the sliding sheet groove and communicated with the sliding sheet groove, the valve installation groove is at least formed in one axial side of the cylinder and is opened to install a valve assembly, the size of the valve installation groove in the thickness direction of the sliding sheet groove is larger than the thickness of the sliding sheet groove, the cylinder cavity comprises a first working cavity, and the sliding sheet groove comprises a second working cavity.
2. The cylinder of claim 1, wherein a surface of the valve installation groove facing the cylinder chamber is formed as a smooth plane.
3. The cylinder according to claim 1, wherein a cross section perpendicular to an axis of the valve installation groove is formed in a rectangular shape, or a trapezoidal shape, or a semicircular shape, or an oblong shape.
4. The cylinder of claim 1, wherein inner circumferential corners of the valve installation grooves are connected in a circular arc transition.
5. The cylinder of claim 1, wherein a portion of an outer peripheral wall of the cylinder is formed to extend radially outward as a first thickened portion, the valve mounting groove being located on the first thickened portion.
6. The cylinder of claim 1, wherein a portion of the outer peripheral wall of the cylinder opposite to the valve installation groove is extended radially outwardly to form a second thickened portion.
7. The cylinder according to claim 6, wherein a surface of the valve installation groove facing the cylinder chamber is formed as a plane parallel to an outer peripheral surface of the second thickened portion.
8. A compression mechanism, comprising:
a cylinder according to any one of claims 1 to 7;
the piston is rotatably arranged in the cylinder cavity;
the sliding piece is movably arranged in the sliding piece groove, and the head end of the sliding piece is stopped against or connected with the outer peripheral wall of the piston;
the air valve assembly is arranged in the air valve mounting groove;
the part of the cylinder cavity, which is positioned on the outer side of the piston, forms a first working cavity, and the part of the sliding sheet groove, which is positioned between the sliding sheet and the air valve assembly, forms a second working cavity.
9. A compressor characterized by comprising the compression mechanism according to claim 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810107258.XA CN108071590B (en) | 2018-02-02 | 2018-02-02 | Cylinder, compression mechanism and compressor |
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| CN201810107258.XA CN108071590B (en) | 2018-02-02 | 2018-02-02 | Cylinder, compression mechanism and compressor |
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| CN108071590B true CN108071590B (en) | 2021-02-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111075720B (en) * | 2018-10-18 | 2021-08-31 | 广东美芝精密制造有限公司 | Compressor and refrigeration cycle system with same |
| CN112145416B (en) * | 2019-06-28 | 2022-08-02 | 安徽美芝精密制造有限公司 | Compressor and compression mechanism and air conditioner thereof |
| CN112983820A (en) * | 2021-05-19 | 2021-06-18 | 广东美芝制冷设备有限公司 | Compressor, refrigerating system and refrigerating equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5888486A (en) * | 1981-11-20 | 1983-05-26 | Fujitsu General Ltd | Rotary compressor |
| JPH05157073A (en) * | 1991-12-06 | 1993-06-22 | Daikin Ind Ltd | Rolling piston type compressor |
| US5868559A (en) * | 1997-02-05 | 1999-02-09 | Ford Motor Company | Compressor vane spring mechanism |
| CN105004103A (en) * | 2015-07-07 | 2015-10-28 | 清华大学 | Single-cylinder rolling rotor compressor with middle air replenishing structure |
| CN105698425B (en) * | 2016-02-22 | 2018-06-15 | 广东美芝制冷设备有限公司 | Refrigerating plant |
| CN107084133B (en) * | 2017-03-27 | 2022-12-09 | 广东美芝精密制造有限公司 | Compressor and refrigerating device with same |
| CN207960940U (en) * | 2018-02-02 | 2018-10-12 | 广东美芝制冷设备有限公司 | cylinder, compression mechanism and compressor |
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Application publication date: 20180525 Assignee: GUANGDONG MIDEA ENVIRONMENT TECHNOLOGY Co.,Ltd. Assignor: GUANGDONG MEIZHI COMPRESSOR Co.,Ltd. Contract record no.: X2021980015834 Denomination of invention: Cylinder, compression mechanism and compressor Granted publication date: 20210212 License type: Common License Record date: 20211221 |