CN105065230A - Reciprocating compressor and household appliance - Google Patents
Reciprocating compressor and household appliance Download PDFInfo
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- CN105065230A CN105065230A CN201510502148.XA CN201510502148A CN105065230A CN 105065230 A CN105065230 A CN 105065230A CN 201510502148 A CN201510502148 A CN 201510502148A CN 105065230 A CN105065230 A CN 105065230A
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Abstract
The invention relates to a reciprocating compressor which comprises an air cylinder and pistons. The air cylinder comprises a cylinder body, an air cylinder inner cavity is formed in the cylinder body, and the pistons are located in the air cylinder inner cavity and can slide along the cavity wall of the air cylinder inner cavity. The pistons comprise the first piston and the second piston, and the first piston and the second piston can slide in the direction close to each other and the direction far away from each other in a reciprocating manner at the same time. According to the reciprocating compressor, the two pistons are arranged on the single air cylinder, and the two pistons move oppositely or reversely at the same time, so that the stroke of the pistons can be effectively enlarged under the condition of guaranteeing certain motion frequency of the piston. Therefore, on the basis of a certain clearance volume, the effective air suction volume can be increased, so that the volume efficiency of the air cylinder is increased, and adverse effects of the clearance volume are reduced.
Description
Technical field
The present invention relates to Compressor Technology field, be specifically related to a kind of reciprocal compressor and be provided with the household electric appliance of reciprocal compressor.
Background technique
At present, reciprocal compressor, due to the reason such as self structure and manufacturing process, makes the impact of its clearance volume more serious.Be subject to the impact of clearance volume, reciprocal compressor is restricted to piston stroke in addition, and the raising of volume of cylinder coefficient is encountered " ceiling board ".If strengthen the piston stroke of general reciprocating compressor, although the impact of clearance volume can be reduced, but compressor turning crankshaft can be caused to increase, rotating mechanism volume is made to become large, and cause piston operation frequency to decline and cycle period elongated, finally cause exhaust continuity to decline and to prime mover impact a series of harmful effect such as large.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of reciprocal compressor, structure is simple, easy to assembly, effectively can reduce the adverse effect of clearance volume.
According to a first aspect of the invention, provide a kind of reciprocal compressor, comprise cylinder and piston, described cylinder comprises cylinder body, in described cylinder body, be formed with cylinder inner cavity, described piston is positioned at described cylinder inner cavity, and can slide along the chamber wall of described cylinder inner cavity; Described piston comprises first piston and the second piston, described first piston and the second piston can simultaneously to direction close to each other and mutually away from direction reciprocatingly slide.
Preferably, the cylinder body of each cylinder forms the first cylinder body and the second cylinder body that match with described first piston and the second piston respectively, and described first cylinder body and the second cylinder body are symmetrical arranged.
Preferably, described first cylinder body and the second cylinder body coaxially or are at an angle symmetrical arranged.
Preferably, described first cylinder body and the second cylinder body are asymmetric setting.
Preferably, the volume of described first cylinder body and the second cylinder body and/or cross section different.
Preferably, the cylinder wall of the position that described first cylinder body and the second cylinder body intersect is provided with intakeport and relief opening.
Preferably, described intakeport is provided with Aspirating valves, described relief opening is provided with outlet valve.
Preferably, also comprise power mechanism, for driving reciprocatingly sliding of described first piston and the second piston.
Preferably, described power mechanism comprises connecting rod and prime mover.
Preferably, described connecting rod comprises crank and connecting rod, and one end of described connecting rod is connected with the free end of described crank, and other one end of described connecting rod is connected on described piston by revolute pair.
Preferably, described connecting rod is provided with two, is respectively used to the to-and-fro motion driving described first piston and the second piston; The sense of rotation of two cranks of two connecting rods is contrary or identical.
Preferably, the prime mover driving two cranks to rotate is two independently prime mover or be a prime mover.
According to a second aspect of the invention, a kind of household electric appliance are provided, it is characterized in that, comprise reciprocal compressor.
Preferably, the refrigeration agent in described household electric appliance is CO
2.
In the application, by arranging two pistons in single cylinder, two pistons in opposite directions simultaneously, reverse motions, can ensure that piston is when certain movement frequency, effectively increases piston stroke; The increase of piston stroke, on the basis of certain clearance volume, can increase effective aspirated volume, thus increases cylinder volumetric efficiency, reduces the adverse effect of clearance volume.In the application, under certain piston movement frequency, two piston symmetric motions are compared with the situation of single piston, its aspirated volume increases (pressure reduction), speed is faster, reduction (pressure rising) speed of delivery space is also faster, i.e. the reciprocal compressor of single cylinder double-piston, its air-breathing and exhaust velocity faster.And, although the piston stroke of entirety increases, for wherein some pistons, its movement travel is the same with the compressor of single cylinder list piston, according to designing requirement design during single cylinder list piston, thus can not affect the suction and discharge cycle of reciprocal compressor.Because the total kilometres of piston increase, make internal cylinder pressure lower than general reciprocating compressor cylinder pressure, thus can the lower gas of suction pressure; Same, the high pressure in cylinder also more single piston time high, thus the reciprocal compressor of single cylinder double-piston formula can adapt to higher pressure ratio.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects of the present invention, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the structural representation of a kind of embodiment of reciprocal compressor of the present invention;
Fig. 2 is the structural representation of another embodiment of reciprocal compressor of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present invention is described in more detail.In various figures, identical element adopts same or similar reference character to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
As shown in Figure 1, the reciprocal compressor in the application comprises cylinder 1, piston 2 and power mechanism 3.Described cylinder 1 comprises cylinder body 11, in described cylinder body 11, be formed with cylinder inner cavity 12, and described piston 2 is positioned at described cylinder inner cavity 12, and can slide along the chamber wall of described cylinder inner cavity 12; Described power mechanism 3 and being connected with described piston 2, slides in described cylinder inner cavity 12 for driving described piston 2.
Be provided with two pistons 2 in each cylinder 1, comprise first piston 21 and the second piston 22; The cylinder body 11 of each cylinder 1 is formed in the first cylinder body 111 and the second cylinder body 112, first cylinder body 111 that match with described first piston 21 and the second piston respectively and forms the first cylinder inner cavity and the second cylinder inner cavity.Two pistons 21,22 can slide in opposition simultaneously in described cylinder first cylinder inner cavity and the second cylinder inner cavity, that is, two pistons 21,22 can simultaneously to direction close to each other with reciprocatingly slide in the direction away from each other simultaneously in described first cylinder inner cavity and the second cylinder inner cavity.The cylinder wall of the position that described first cylinder body 111 and the second cylinder body 112 intersect is provided with intakeport 113 and relief opening 114, described intakeport 113 is provided with Aspirating valves, described relief opening 114 is provided with outlet valve.The process that described first piston 21 and the second piston 22 slide in the direction away from each other is breathing process, now cylinder inner cavity 12 volume increases, cylinder 1 internal pressure reduces, when pressure is reduced to setting value, or cylinder inner cavity 12 volume is when increasing to certain value, described Aspirating valves is opened, and low-pressure gas is inhaled in cylinder inner cavity 12; The process that described first piston 21 and the second piston 22 slide to direction close to each other is compression process, now cylinder inner cavity 12 volume reduces, cylinder inner cavity 12 internal pressure raises, when pressure is elevated to setting value, or cylinder inner cavity 12 volume is when being reduced to certain value, described outlet valve is opened, and the high temperature and high pressure gas in cylinder inner cavity 12 is discharged.Described intakeport 113 and relief opening 114 are positioned at the position of the first cylinder block 111 and the handing-over of the second cylinder block, the i.e. nearest place of described first piston 21 and the slip of the second piston 22, described intakeport 113 and relief opening 114 can be arranged on both sides in the circumferential, also can be set together, or arrange in other angles.
Described power mechanism 3 comprises connecting rod 31 and prime mover (not shown).Described connecting rod 31 comprises crank 311 and connecting rod 312, described crank 311 can rotate under the driving of described prime mover, one end of described connecting rod 312 is connected with the free end of described crank 311, and other one end of described connecting rod 312 is connected on described piston 2 by revolute pair.Concrete, described connecting rod 31 is provided with two, is respectively used to the to-and-fro motion driving described first piston 21 and the second piston 22.
In the embodiment shown in fig. 1, described first cylinder body 111 and the second cylinder body 112 are coaxially arranged, namely the axis of two cylinder bodies point-blank, and the first cylinder body 111 and the second cylinder body 112 are arranged in Mirror Symmetry, and both volume is identical, cross section size, shape are identical.In this embodiment, the terminal velocity of two connecting rods 31 is identical, to ensure first piston 21 and the motion in Mirror Symmetry of the second piston 22.The sense of rotation of two cranks 311 can rotate (sense of rotation is contrary) in Mirror Symmetry, also can rotating Vortex.The prime mover driving two cranks 311 to rotate can be two independently prime mover, also can be that a prime mover is realized by other driving mechanisms, as long as can ensure that the rotational speed of two cranks 311 is identical, to ensure that two-piston can move in Mirror Symmetry.
In another embodiment, as shown in Figure 2, described first cylinder body 111 and the second cylinder body 112 at an angle α are symmetrical arranged, and install, expand the Applicable scope of compressor under the installation environment that this structure can not be able to be arranged on an axis at two cylinder bodies.In this embodiment, described first piston 21 and the second piston 22 top are wedge structure, to reduce clearance volume.
In another embodiment, described first cylinder body 111 and the second cylinder body 112 are in asymmetric setting, and cylinder body volume or the cylinder body cross section of such as the first cylinder body 111 and the second cylinder body 112 are unequal.But make described first piston 21 and the second piston 22 in a reciprocating stroke, can simultaneously move toward one another, reverse motions; And arrive proximal most position and highest distance position simultaneously, in this case, the terminal velocity of two connecting rods 31 is not identical, but angular velocity is identical, and the cylinder body length of its velocity ratio and the first cylinder body 111 and the second cylinder body 112 is inversely proportional to.
Reciprocal compressor in the application may be used in household electric appliance, and especially air conditioner, refrigerator, refrigerator etc. need the household electric appliance of refrigeration.Reciprocal compressor structure in the application refrigeration agent be particularly useful in household electric appliance is CO
2situation.CO2 refrigeration agent has many excellent characteristics, but its shortcoming needs Trans-critical cycle work, make its operating pressure very large, required compression ratio is also larger, conventional reciprocal compressor needs certain operation frequency to meet successional demand to be applied to domestic air conditioning, in addition the impact of clearance volume makes effective cylinder volume less, the more difficult high compression ratio meeting CO2 refrigeration agent, the compressor of the single cylinder double-piston formula in the application, under the prerequisite that its single piston operation frequency is the same with existing piston of reciprocating compressor operation frequency, improve effective aspirated volume of cylinder, increasing compression ratio.In addition, the convenient cooling of reciprocal compressor, can make compression ratio improve further and not need to consume the more energy.
In the application, by arranging two pistons in single cylinder, two pistons in opposite directions and reverse motions, can ensure that piston is when certain movement frequency, effectively increases piston stroke simultaneously; The increase of piston stroke, on the basis of certain clearance volume, can increase effective aspirated volume, thus increases cylinder volumetric efficiency, reduces the adverse effect of clearance volume.In the application, under certain piston movement frequency, two piston symmetric motions are compared with the situation of single piston, its aspirated volume increases (pressure reduction), speed is faster, reduction (pressure rising) speed of delivery space is also faster, i.e. the reciprocal compressor of single cylinder double-piston, its air-breathing and exhaust velocity faster.And, although the piston stroke of entirety increases, for wherein some pistons, its movement travel is the same with the compressor of single cylinder list piston, according to designing requirement design during single cylinder list piston, thus can not affect the suction and discharge cycle of reciprocal compressor.Because the total kilometres of piston increase, make internal cylinder pressure lower than general reciprocating compressor cylinder pressure, thus can the lower gas of suction pressure; Same, the high pressure in cylinder also more single piston time high, thus the reciprocal compressor of single cylinder double-piston formula can adapt to higher pressure ratio.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (14)
1. a reciprocal compressor, comprise cylinder (1) and piston (2), described cylinder (1) comprises cylinder body (11), cylinder inner cavity (12) is formed in described cylinder body (11), described piston (2) is positioned at described cylinder inner cavity (12), and can slide along the chamber wall of described cylinder inner cavity (12); It is characterized in that, described piston (1) comprises first piston (21) and the second piston (22), described first piston (21) and the second piston (22) can simultaneously to direction close to each other and mutually away from direction reciprocatingly slide.
2. reciprocal compressor according to claim 1, it is characterized in that, the cylinder body (11) of each cylinder (1) forms the first cylinder body (111) and the second cylinder body (112) that match with described first piston (21) and the second piston (22) respectively, and described first cylinder body (111) and the second cylinder body (112) are symmetrical arranged.
3. reciprocal compressor according to claim 2, is characterized in that, described first cylinder body (111) and the second cylinder body (112) coaxially or are at an angle symmetrical arranged.
4. reciprocal compressor according to claim 1, is characterized in that, described first cylinder body (111) and the second cylinder body (112) are in asymmetric setting.
5. reciprocal compressor according to claim 4, is characterized in that, volume and/or the cross section of described first cylinder body (111) and the second cylinder body (112) are identical or different.
6. the reciprocal compressor according to claim 2 or 4, it is characterized in that, the cylinder wall of the position that described first cylinder body (111) and the second cylinder body (112) are intersected is provided with intakeport (113) and relief opening (114).
7. reciprocal compressor according to claim 6, is characterized in that, described intakeport (113) is provided with Aspirating valves, and described relief opening (114) is provided with outlet valve.
8. the reciprocal compressor according to any one of claim 1-4, is characterized in that, also comprises power mechanism, for driving reciprocatingly sliding of described first piston (21) and the second piston (22).
9. reciprocal compressor according to claim 8, is characterized in that, described power mechanism (3) comprises connecting rod (31) and prime mover.
10. reciprocal compressor according to claim 9, it is characterized in that, described connecting rod (31) comprises crank (311) and connecting rod (312), one end of described connecting rod (312) is connected with the free end of described crank (311), and other one end of described connecting rod (312) is connected on described piston (2) by revolute pair.
11. reciprocal compressors according to claim 10, is characterized in that, described connecting rod (31) is provided with two, are respectively used to the to-and-fro motion driving described first piston (21) and the second piston (22); The sense of rotation of two cranks (311) of two connecting rods (31) is contrary or identical.
12. reciprocal compressors according to claim 11, is characterized in that, the prime mover driving two cranks (311) to rotate is two independently prime mover or be a prime mover.
13. 1 kinds of household electric appliance, is characterized in that, comprise the reciprocal compressor described in any one of claim 1-12.
14. household electric appliance according to claim 13, is characterized in that, the refrigeration agent in described household electric appliance is CO
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502148.XA CN105065230B (en) | 2015-08-14 | 2015-08-14 | Reciprocating compressor and household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502148.XA CN105065230B (en) | 2015-08-14 | 2015-08-14 | Reciprocating compressor and household electrical appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065230A true CN105065230A (en) | 2015-11-18 |
| CN105065230B CN105065230B (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510502148.XA Active CN105065230B (en) | 2015-08-14 | 2015-08-14 | Reciprocating compressor and household electrical appliance |
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| Country | Link |
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| CN (1) | CN105065230B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402102A (en) * | 2015-12-11 | 2016-03-16 | 珠海格力电器股份有限公司 | Single-cylinder reciprocating piston type compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB208582A (en) * | 1922-09-16 | 1923-12-17 | George Constantinesco | Improvements in pumps |
| US5031581A (en) * | 1988-08-29 | 1991-07-16 | Powell Brian L | Crankless reciprocating machine |
| CN1185529A (en) * | 1996-12-19 | 1998-06-24 | 诺瓦达里股份公司 | Reciprocating compressor |
| CN1414244A (en) * | 2001-10-23 | 2003-04-30 | Lg电子株式会社 | Oil supply equipment for opposed reciprocating compressor |
| JP3455763B2 (en) * | 1999-04-13 | 2003-10-14 | 株式会社中央技研工業 | Air compression structure |
| CN205047394U (en) * | 2015-08-14 | 2016-02-24 | 珠海格力电器股份有限公司 | Reciprocating compressor and domestic appliance |
-
2015
- 2015-08-14 CN CN201510502148.XA patent/CN105065230B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB208582A (en) * | 1922-09-16 | 1923-12-17 | George Constantinesco | Improvements in pumps |
| US5031581A (en) * | 1988-08-29 | 1991-07-16 | Powell Brian L | Crankless reciprocating machine |
| CN1185529A (en) * | 1996-12-19 | 1998-06-24 | 诺瓦达里股份公司 | Reciprocating compressor |
| JP3455763B2 (en) * | 1999-04-13 | 2003-10-14 | 株式会社中央技研工業 | Air compression structure |
| CN1414244A (en) * | 2001-10-23 | 2003-04-30 | Lg电子株式会社 | Oil supply equipment for opposed reciprocating compressor |
| CN205047394U (en) * | 2015-08-14 | 2016-02-24 | 珠海格力电器股份有限公司 | Reciprocating compressor and domestic appliance |
Non-Patent Citations (1)
| Title |
|---|
| 西安交通大学郁永章: "《活塞式压缩机》", 31 October 1983, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402102A (en) * | 2015-12-11 | 2016-03-16 | 珠海格力电器股份有限公司 | Single-cylinder reciprocating piston type compressor |
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|---|---|
| CN105065230B (en) | 2018-08-07 |
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