CN209414101U - Compressor and refrigerating plant with it - Google Patents

Abstract

The utility model provides a kind of compressor and the refrigerating plant with it.Compressor includes cylinder block；Cylinder head, cylinder head are connected by connector with cylinder block；Positioning component, positioning component include the first locating piece and the second locating piece for matching with the first locating piece, and one in the first locating piece and the second locating piece is set on cylinder block, another in the first locating piece and the second locating piece is set in cylinder head；Valve board assembly, valve board assembly can be filled in advance on cylinder block and between cylinder head and cylinder block by positioning component.By setting positioning component valve board assembly to be mounted between cylinder block and cylinder head in advance, setting can facilitate the installation and removal for realizing valve board assembly in this way, significantly reduce the installation difficulty of valve board assembly, improve the assembly efficiency of compressor.

Description

Compressor and refrigerating plant with it

Technical field

The utility model relates to technical field of refrigeration equipment, in particular to a kind of compressor and with its refrigeration Device.

Background technique

In the prior art, the compressor in refrigerator is small-sized piston refrigeration compressor, and structure is crank link mechanism, is passed through Motor band dynamic crankshaft and then drive connecting rod and piston, realize the reciprocating motion of piston, so by valve group to refrigerant carry out air-breathing, Compression, exhaust, expansion Four processes.Valve block structure is used in the prior art as shown in Figure 1, the valve block structure includes using powder The exhaust valve plate 2 ' and lift stopper 3 ' that valve plate 1 ', the stainless steel material of metallurgical casting are stamped to form are constituted, and wherein valve plate has Sunk groove 11 ', exhaust valve plate are placed in groove 11 ', and are fixed by riveting lift stopper.Suction valve chip Gasket, air inlet-exhaust valve component 100 ', cylinder head gasket and cylinder head are fastened on cylinder end face by screw.Compressor is normal When work operating, absolutely not permission refrigerant is leaked to shell, therefore the assembly and manufacture to valve plate propose very high requirement, existing valve The assembly of group valve group and manufacturing process are more difficult, and part universality is bad, and each installation and removal lift stopper is difficult, furthermore Due to using rectangular valve plate, the part only cooperated using upper and cylinder head in valve plate, other parts are not made full use of, and cause valve plate The waste of material, rectangular valve plate and the cooperation of rectangular cylinder head increase the bulk of the entire pump housing indirectly, cause to increase complete machine weight The problems such as amount.

Utility model content

The main purpose of the utility model is to provide a kind of compressor and with its refrigerating plant, to solve existing skill Valve board assembly in art problem difficult to install.

To achieve the goals above, one aspect according to the present utility model provides a kind of compressor, comprising: cylinder Seat；Cylinder head, cylinder head are connected by connector with cylinder block；Positioning component, positioning component include the first locating piece and with The second locating piece that first locating piece matches, one in the first locating piece and the second locating piece is set on cylinder block, and Another in positioning piece and the second locating piece is set in cylinder head；Valve board assembly, valve board assembly can pass through positioning component It is filled on cylinder block and between cylinder head and cylinder block in advance.

Further, the first locating piece is positioning column, and positioning column is set in cylinder head, and the second locating piece is location hole, Location hole is opened on cylinder block.

Further, the surface of positioning column, which is provided with, faces directly.

Further, the cross section of positioning column is square, rectangle, ellipse or triangle.

Further, valve board assembly includes: valve plate, and valve plate gas vent is provided in the middle part of valve plate, is located at valve plate gas vent Side be provided with the valve plate limit hole passed through for positioning component.

Further, the opposite side of valve plate limit hole is provided with valve plate air entry, positioned at the side of valve plate air entry It is provided with valve plate exhaust hole.

Further, at least partly outer peripheral molded line of valve plate is in camber line.

Further, the length of camber line is C, and the radius of curvature of camber line is R, wherein the π of C >=3 R/4.

Further, valve board assembly further include: exhaust valve plate, exhaust valve plate is between valve plate and cylinder head, exhaust valve It is provided with exhaust valve plate air entry in the middle part of piece, the row passed through for positioning component is provided with positioned at the side of exhaust valve plate air entry Air valve plate limit hole.

Further, offering between exhaust valve plate limit hole and exhaust valve plate air entry for exhaust valve plate first is engraved Hollow structure, valve plate exhaust hole are connected with the first engraved structure, and the side wall of the first engraved structure is provided with the first ligulate Valve block, the first ligulate valve block are used to open or close valve plate gas vent.

Further, when the first ligulate valve block is located at open position, the first ligulate valve block is abutted against with cylinder head.

Further, cylinder head towards exhaust valve plate side is provided with the limiting stand matched with the first ligulate valve block Rank.

Further, the height of the table top of limited step is from the head of the first ligulate valve block to the tail portion of the first ligulate valve block It gradually rises.

Further, valve board assembly further include: cylinder head gasket, cylinder head gasket be located at exhaust valve plate and cylinder head it Between, it is provided with cylinder head gasket air entry in the middle part of cylinder head gasket, cylinder head gasket air entry side is provided with cylinder Lid gasket limit hole, cylinder-top gasket on piece are provided with the second engraved structure being connected with the first engraved structure, the second hollow out knot Structure is between cylinder head gasket limit hole and cylinder head gasket air entry.

Further, the area of cylinder head gasket air entry is greater than or equal to the area of exhaust valve plate air entry, and/or, The area of exhaust valve plate air entry is greater than or equal to the area of the valve plate air entry of valve plate.

Further, the outer peripheral molded line of the outer peripheral molded line, exhaust valve plate of cylinder head gasket is outer with valve plate The molded line at edge is identical.

Further, valve board assembly further include: suction valve chip, suction valve chip is between valve plate and cylinder block, inlet valve The second ligulate valve block is provided in the middle part of piece, the second ligulate valve block is used to open or closes valve plate air entry, sets on suction valve chip It is equipped with the suction valve chip limit hole passed through for positioning component.

Further, suction valve chip limit hole is located at the tail portion of the second ligulate valve block, and the waist of the second ligulate valve block is set It is equipped with suction valve chip gas vent, the side positioned at the second ligulate valve block of suction valve chip is provided with to be connected with valve plate exhaust hole Suction valve chip exhaust passage.

Further, valve board assembly further include: suction valve chip gasket, suction valve chip gasket are located at suction valve chip and cylinder block Between, suction valve chip through-hole is provided in the middle part of suction valve chip gasket, the edge of suction valve chip through-hole is provided with for positioning group The suction valve chip gasket limit hole that part passes through is provided with logical with suction valve chip exhaust positioned at the side of suction valve chip gasket limit hole The suction valve chip gasket exhaust hole that road is connected.

Further, the diameter of suction valve chip gasket exhaust hole is greater than or equal to the diameter of suction valve chip exhaust passage, And/or the diameter of suction valve chip exhaust passage is greater than or equal to the diameter of valve plate exhaust hole.

Further, valve plate with a thickness of L, wherein 1.5mm≤L≤2.5mm.

Further, cylinder block has piston chamber, towards at least part of outer of the end of the piston chamber of cylinder head side Profile molded line is in camber line.

Further, one in the first locating piece and the second locating piece is set on the end face of piston chamber.

Another aspect according to the present utility model, provides a kind of refrigerating plant, including compressor, and compressor is above-mentioned Compressor.

It is gentle valve board assembly to be mounted in cylinder block in advance by setting positioning component using the technical solution of the utility model Between cylinder cap, setting can facilitate the installation and removal for realizing valve board assembly in this way, significantly reduce the installation of valve board assembly Difficulty improves the assembly efficiency of compressor.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the configuration schematic diagram of valve board assembly in the prior art；

Fig. 2 shows the configuration schematic diagrams of the first embodiment of compressor according to the present utility model；

Fig. 3 shows the configuration schematic diagram of the second embodiment of compressor according to the present utility model.

Wherein, the above drawings include the following reference numerals:

10, cylinder block；11, piston chamber；12, screw；13, connecting hole；14, exhaust hole；

20, cylinder head；21, limited step；

30, valve board assembly；31, valve plate；311, valve plate gas vent；312, valve plate limit hole；313, valve plate air entry；314, Valve plate exhaust hole；

32, exhaust valve plate；321, exhaust valve plate air entry；322, exhaust valve plate limit hole；323, the first ligulate valve block；

33, cylinder head gasket；331, cylinder head gasket air entry；332, cylinder head gasket limit hole；

34, suction valve chip；341, the second ligulate valve block；342, suction valve chip limit hole；343, suction valve chip gas vent； 344, suction valve chip exhaust passage；

35, suction valve chip gasket；351, suction valve chip through-hole；352, suction valve chip gasket limit hole；353, suction valve chip Gasket exhaust hole；

41, positioning column；411, it faces directly；42, location hole.

Specific embodiment

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce The other step or units of product or equipment inherently.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them It states.

In conjunction with shown in Fig. 2 and Fig. 3, embodiment according to the present utility model provides a kind of compressor.

Specifically, as shown in Fig. 2, compressor includes cylinder block 10, cylinder head 20, positioning component and valve board assembly 30.Gas Cylinder cap 20 is connected by connector with cylinder block 10.Positioning component includes the first locating piece and matches with the first locating piece Second locating piece, one in the first locating piece and the second locating piece is set on cylinder block 10, the first locating piece and second fixed Another in the part of position is set in cylinder head 20.Valve board assembly 30 can be filled in advance on cylinder block 10 and is located at by positioning component Between cylinder head 20 and cylinder block 10.

In the present embodiment, by setting positioning component valve board assembly to be mounted between cylinder block and cylinder head in advance, this Sample setting can facilitate the installation and removal for realizing valve board assembly, significantly reduce the installation difficulty of valve board assembly, improve The assembly efficiency of compressor.

Wherein, the first locating piece is positioning column 41, and positioning column 41 is set in cylinder head 20, and the second locating piece is location hole 42, location hole 42 is opened on cylinder block 10.Setting in this way assembles up reliable so that the structure of positioning component is simple.

Prevent all parts in valve board assembly anti-loaded in order to enable positioning column 41 can play, it can be in positioning column 41 Surface, which is provided with, faces 411 directly.Wherein, the cross section of positioning column 41 can be square, rectangle, ellipse or triangle.Certainly, The diameter of positioning column 41 also can be set in a manner of gradual change.

Specifically, valve board assembly 30 includes valve plate 31.The middle part of valve plate 31 is provided with valve plate gas vent 311, is located at valve plate The side of gas vent 311 is provided with the valve plate limit hole 312 passed through for positioning component.Setting can facilitate the peace of valve plate 31 in this way Dress.The opposite side of valve plate limit hole 312 is provided with valve plate air entry 313, the side positioned at valve plate air entry 313 is provided with Valve plate exhaust hole 314.It can be avoided using the valve board structure of the structure and open up groove installation lift stopper on valve plate, have Reduce to effect the difficulty of processing of valve plate.

Further, at least partly outer peripheral molded line of valve plate 31 is arranged to camber line.Setting can be avoided valve in this way Plate is arranged to square structure in the prior art, using the valve board structure of this implementation, can effectively reduce the processing material of valve plate Material, to efficiently reduce the production cost of compressor.Wherein, the length of camber line is C, and the radius of curvature of camber line is R, C >=3 πR/4。

Valve board assembly 30 further includes exhaust valve plate 32.Exhaust valve plate 32 is between valve plate 31 and cylinder head 20, exhaust valve The middle part of piece 32 is provided with exhaust valve plate air entry 321, and the side positioned at exhaust valve plate air entry 321 is provided with for positioning component The exhaust valve plate limit hole 322 passed through.In this way setting can easy to exhaust valve block 32 install, while increasing the valve board assembly Reliability.

Offering between exhaust valve plate limit hole 322 and exhaust valve plate air entry 321 for exhaust valve plate 32 first is engraved Hollow structure, valve plate exhaust hole 314 are connected with the first engraved structure, and the side wall of the first engraved structure is provided with the first tongue Shape valve block 323, the first ligulate valve block 323 are used to open or close valve plate gas vent 311.Setting can further improve in this way The reliability of valve board assembly.When the first ligulate valve block 323 is located at open position, the first ligulate valve block 323 and 20 phase of cylinder head It abuts.When the first ligulate valve block 323 is located at closed position, the first ligulate valve block 323 with cylinder head 20 there is distance ground to be arranged.

Wherein, cylinder head 20 towards 32 side of exhaust valve plate is provided with the limit matched with the first ligulate valve block 323 Step 21.The height of the table top of limited step 21 from the head of the first ligulate valve block 323 to the tail portion of the first ligulate valve block 323 by Edge up height.It is arranged in this way so that the first ligulate valve block 323 is fitted in limit when the first ligulate valve block 323 is located at open position Step 21 enables to effect of the first ligulate valve block 323 by the pressure at expulsion stress balanced in this way, effectively prevents The fracture of one ligulate valve block 323, improves the shelf life of the first ligulate valve block 323.

Valve board assembly 30 further includes cylinder head gasket 33.Cylinder head gasket 33 be located at exhaust valve plate 32 and cylinder head 20 it Between, the middle part of cylinder head gasket 33 is provided with cylinder head gasket air entry 331, sets positioned at 331 side of cylinder head gasket air entry It is equipped with cylinder head gasket limit hole 332, the second hollow out knot being connected with the first engraved structure is provided in cylinder head gasket 33 Structure, the second engraved structure is between cylinder head gasket limit hole 332 and cylinder head gasket air entry 331.Setting can in this way Facilitate cylinder head gasket 33 to be mounted on cylinder block, while improving the leakproofness of compressor.

Further, the area of cylinder head gasket air entry 331 is greater than or equal to the area of exhaust valve plate air entry 321, The area of exhaust valve plate air entry 321 is greater than or equal to the area of the valve plate air entry 313 of valve plate 31.Setting enables in this way Compressor air inlet is smooth.

Further, the outer peripheral molded line of the outer peripheral molded line, exhaust valve plate 32 of cylinder head gasket 33 is and valve plate 31 outer peripheral molded line is identical.Setting can effectively reduce the rapidoprint of entire valve board assembly in this way, then effectively The production cost of compressor is saved.

Valve board assembly 30 further includes suction valve chip 34.Suction valve chip 34 is between valve plate 31 and cylinder block 10, inlet valve The middle part of piece 34 is provided with the second ligulate valve block 341, and the second ligulate valve block 341 is used to open or closes valve plate air entry 313, inhales The suction valve chip limit hole 342 passed through for positioning component is provided on air valve plate 34.Setting can effectively improve compression in this way The reliability of machine.

Wherein, suction valve chip limit hole 342 is located at the tail portion of the second ligulate valve block 341, the waist of the second ligulate valve block 341 Portion is provided with suction valve chip gas vent 343, and the side positioned at the second ligulate valve block 341 of suction valve chip 34 is provided with arranges with valve plate The suction valve chip exhaust passage 344 that vent hole 314 is connected.

Further, valve board assembly 30 further includes suction valve chip gasket 35.Suction valve chip gasket 35 is located at suction valve chip 34 Between cylinder block 10, the middle part of suction valve chip gasket 35 is provided with suction valve chip through-hole 351, the side of suction valve chip through-hole 351 The suction valve chip gasket limit hole 352 passed through for positioning component is provided at edge, positioned at the one of suction valve chip gasket limit hole 352 Side is provided with the suction valve chip gasket exhaust hole 353 being connected with suction valve chip exhaust passage 344.Setting can be into one in this way Improve the leakproofness of valve board assembly in step ground.

The diameter of suction valve chip gasket exhaust hole 353 is greater than or equal to the diameter of suction valve chip exhaust passage 344, air-breathing The diameter of valve block exhaust passage 344 is greater than or equal to the diameter of valve plate exhaust hole 314.Setting enables to compressor to arrange in this way Gas is more smooth.

Preferably, valve plate 31 with a thickness of L, wherein 1.5mm≤L≤2.5mm.Setting can efficiently reduce in this way The thickness of valve board assembly then efficiently reduces compressor and integrally reduces clearance volume, improves the practicability of compressor.

As shown in figure 3, cylinder block 10 have piston chamber 11, towards 20 side of cylinder head piston chamber 11 end at least Partial outer profile molded line is arranged to camber line.Setting enables to the outer profile molded line of valve board assembly and the outer profile of cylinder in this way Molded line is consistent, efficiently reduces the rapidoprint of cylinder block, then efficiently reduces the production cost of compressor and accounts for Installation space.

Preferably, one in the first locating piece and the second locating piece is set on the end face of piston chamber 11.Such as Fig. 3 institute Show, location hole 42 and exhaust hole 14 are provided on the end face of piston chamber 11.The connecting hole 13 of connector is provided on cylinder block. Preferably, connector is screw 12, and screw 12 is multiple.

Compressor in above-described embodiment can be also used for technical field of refrigeration equipment, i.e., according to the present utility model another Aspect, provides a kind of refrigerating plant, including compressor, and compressor is the compressor in above-described embodiment.

Specifically, by using approximate circle valve group, valve group waste of material problem is efficiently solved, by opening in valve group If limit hole, when efficiently solving valve group installation the problem of vibration.Using the valve board assembly in the application, a lift is eliminated Limiter, compared with the cooperation of rectangular cylinder head valve group, suction valve chip and exhaust valve plate cooperate with cylinder holes completely, and materials'use rate compares Height saves the production and processing cost of valve group part, improves the economy of complete machine.Due to offering limit hole in valve group, cylinder is leaned on The positioning column covered carries out installation limit, saves screw hole on valve board assembly, improves valve group processing economy and installation just Benefit.

Using the valve board assembly, exhaust valve plate is fixed without riveting lift stopper again, but casts one in cylinder head A inclined limited step substitutes lift stopper, and then improves the convenience of valve group component installation.

Fig. 2 is the utility model valve group component and cylinder head configuration schematic diagram, valve group component and cylinder head include cylinder block, Cylinder head, suction valve chip gasket, suction valve chip, valve plate, exhaust valve plate, cylinder head gasket, wherein cylinder block includes that exhaust is logical Hole, location hole, screw hole, the piston compressor pump housing are (not shown by crankshaft (not shown go out), piston (not shown go out), connecting rod Out), cylinder block and valve group component form, and crankshaft drives connecting rod and piston in cylinder block cavity by valve driven by the motor Group component carries out air-breathing, compression, exhaust, expansion process.

Fig. 3 is that the configuration schematic diagram of the embodiment of compressor is by compressor when valve board assembly starts to work normally Motor drag crank rotation, crankshaft through connecting rod band piston work in cylinder piston room refrigerant, work as air-breathing, low temperature The refrigerant of low pressure is exported through air suction silencer via cylinder head gasket air entry, valve plate air entry, so that suction valve chip is opened, it is cold Matchmaker is drawn into the piston chamber of cylinder block, and is compressed in the piston chamber of cylinder block, and when exhaust, suction valve chip compresses valve Plate air entry, the gas of high temperature and pressure is from through suction valve chip gas vent, valve plate gas vent, so that exhaust valve plate is opened, cylinder head In limited step substitute lift stopper, gas enters in cylinder head, then logical through valve plate exhaust hole, suction valve chip Hole, suction valve chip shim through bore enter the exhaust hole in cylinder block, enter in exhaust noise silencing chamber via exhaust hole, so It is discharged from exhaust noise silencing chamber along inside exhaust pipe afterwards.By using round valve group by using circular valve plate modular construction, with Traditional square valve plate component structure is compared, and lift stopper, while the cylinder holes (piston of valve board assembly and circular cylinder are eliminated The end of room) it is fully mated, materials'use rate is relatively high, greatly improves the economy of part processing.Wherein suction valve chip The diameter of gasket exhaust hole will be slightly larger than the diameter of suction valve chip exhaust hole, and the diameter of suction valve chip exhaust hole will again slightly Greater than the diameter of valve plate exhaust hole, the diameter of suction valve chip gas vent will be slightly larger than the diameter of valve plate gas vent, to guarantee to arrange Gas is more smooth；The area of cylinder head gasket air entry be slightly larger than or equal to exhaust valve plate air entry area, exhaust valve plate The area of air entry will slightly larger than valve plate air entry area to guarantee air-breathing more smoothly, valve plate with a thickness of 1.5mm~ 2.5mm, compared with traditional rectangular thick valve plate, clearance volume is smaller, so as to promote the performance of compressor.Furthermore exhaust valve Between piece and limited step also not in contact with when also to guarantee reasonable gap, to guarantee service life and the exhaust efficiency of exhaust valve plate.

By opening up limit hole on valve group component, installation positioning is carried out by the positioning column in cylinder head, without being used in Screw hole is beaten on valve group component, improves the economy of valve group processing, due to eliminating lift stopper, does not have to riveting lift again Limiter fixes exhaust valve plate, but casts inclined step in cylinder head to substitute lift stopper, and then improve The convenience of valve group component installation.Furthermore positioning column also has the function of counnter attack, and the shape of positioning column can be rectangular, taper As long as the effect for preventing valve board assembly anti-loaded can be played.

Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment Other embodiments are closed to realize that this feature, structure or feature are also fallen in the scope of the utility model.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, reference can be made to the related descriptions of other embodiments.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (24)

1. a kind of compressor characterized by comprising

Cylinder block (10)；

Cylinder head (20), the cylinder head (20) are connected by connector with the cylinder block (10)；

Positioning component, the positioning component include the first locating piece and the second locating piece for matching with first locating piece, One in first locating piece and second locating piece is set on the cylinder block (10), first locating piece and Another in second locating piece is set on the cylinder head (20)；

Valve board assembly (30), the valve board assembly (30) can be filled in advance by the positioning component on the cylinder block (10) and position Between the cylinder head (20) and the cylinder block (10).

2. compressor according to claim 1, which is characterized in that first locating piece is positioning column (41), described fixed Position column (41) is set on the cylinder head (20), and second locating piece is location hole (42), and the location hole (42) opens up In on the cylinder block (10).

3. compressor according to claim 2, which is characterized in that the surface of the positioning column (41), which is provided with, to be faced directly (411)。

4. compressor according to claim 2, which is characterized in that the cross section of the positioning column (41) is square, square Shape, ellipse or triangle.

5. compressor according to claim 1, which is characterized in that the valve board assembly (30) includes:

Valve plate (31) is provided with valve plate gas vent (311) in the middle part of the valve plate (31), is located at the valve plate gas vent (311) Side be provided with the valve plate limit hole (312) passed through for the positioning component.

6. compressor according to claim 5, which is characterized in that the opposite side for being located at the valve plate limit hole (312) is set Valve plate air entry (313) are equipped with, the side for being located at the valve plate air entry (313) is provided with valve plate exhaust hole (314).

7. compressor according to claim 5, which is characterized in that at least partly outer peripheral molded line of the valve plate (31) In camber line.

8. compressor according to claim 7, which is characterized in that the length of the camber line is C, the arc curvature of a curve half Diameter is R, wherein the π of C >=3 R/4.

9. compressor according to claim 6, which is characterized in that the valve board assembly (30) further include:

Exhaust valve plate (32), the exhaust valve plate (32) is between the valve plate (31) and the cylinder head (20), the row Exhaust valve plate air entry (321) are provided in the middle part of air valve plate (32), the side for being located at the exhaust valve plate air entry (321) is set It is equipped with the exhaust valve plate limit hole (322) passed through for the positioning component.

10. compressor according to claim 9, which is characterized in that the exhaust valve plate (32) is located at the exhaust valve The first engraved structure, the valve plate exhaust hole are offered between piece limit hole (322) and the exhaust valve plate air entry (321) (314) it is connected with first engraved structure, the side wall of first engraved structure is provided with the first ligulate valve block (323), the first ligulate valve block (323) is used to open or closes the valve plate gas vent (311).

11. compressor according to claim 10, which is characterized in that opened when the first ligulate valve block (323) is located at When position, the first ligulate valve block (323) abuts against with the cylinder head (20).

12. compressor according to claim 11, which is characterized in that the cylinder head (20) towards the exhaust valve plate (32) side is provided with the limited step (21) matched with the first ligulate valve block (323).

13. compressor according to claim 12, which is characterized in that the height of the table top of the limited step (21) is from institute The tail portion for stating head to the first ligulate valve block (323) of the first ligulate valve block (323) gradually rises.

14. compressor according to claim 10, which is characterized in that the valve board assembly (30) further include:

Cylinder head gasket (33), the cylinder head gasket (33) be located at the exhaust valve plate (32) and the cylinder head (20) it Between, cylinder head gasket air entry (331) are provided in the middle part of the cylinder head gasket (33), are located at the cylinder head gasket air-breathing Mouth (331) side is provided with cylinder head gasket limit hole (332), is provided on the cylinder head gasket (33) and is engraved with described first The second engraved structure that hollow structure is connected, second engraved structure are located at the cylinder head gasket limit hole (332) and institute It states between cylinder head gasket air entry (331).

15. compressor according to claim 14, which is characterized in that

The area of the cylinder head gasket air entry (331) is greater than or equal to the area of the exhaust valve plate air entry (321), And/or

The area of the exhaust valve plate air entry (321) is greater than or equal to the face of the valve plate air entry (313) of the valve plate (31) Product.

16. compressor according to claim 14, which is characterized in that the outer peripheral type of the cylinder head gasket (33) Line, the outer peripheral molded line of the exhaust valve plate (32) are identical as the outer peripheral molded line of the valve plate (31).

17. compressor according to claim 6, which is characterized in that the valve board assembly (30) further include:

Suction valve chip (34), the suction valve chip (34) is between the valve plate (31) and the cylinder block (10), the suction The second ligulate valve block (341) is provided in the middle part of air valve plate (34), the second ligulate valve block (341) is used to open or closes institute It states valve plate air entry (313), the suction valve chip limit hole passed through for the positioning component is provided on the suction valve chip (34) (342)。

18. compressor according to claim 17, which is characterized in that the suction valve chip limit hole (342) is located at described At the tail portion of second ligulate valve block (341), the waist of the second ligulate valve block (341) is provided with suction valve chip gas vent (343), the side positioned at the second ligulate valve block (341) of the suction valve chip (34) is provided with logical with valve plate exhaust The suction valve chip exhaust passage (344) that hole (314) is connected.

19. compressor according to claim 18, which is characterized in that the valve board assembly (30) further include:

Suction valve chip gasket (35), the suction valve chip gasket (35) are located at the suction valve chip (34) and the cylinder block (10) Between, it is provided with suction valve chip through-hole (351) in the middle part of the suction valve chip gasket (35), the suction valve chip through-hole (351) Edge be provided with the suction valve chip gasket limit hole (352) passed through for the positioning component, be located at the suction valve chip pad The side of piece limit hole (352) is provided with the suction valve chip gasket exhaust being connected with the suction valve chip exhaust passage (344) Through-hole (353).

20. compressor according to claim 18, which is characterized in that

The diameter of the suction valve chip gasket exhaust hole (353) is greater than or equal to the suction valve chip exhaust passage (344) Diameter, and/or

The diameter of the suction valve chip exhaust passage (344) is greater than or equal to the diameter of the valve plate exhaust hole (314).

21. compressor according to claim 5, which is characterized in that the valve plate (31) with a thickness of L, wherein 1.5mm ≤L≤2.5mm。

22. compressor according to claim 1, which is characterized in that the cylinder block (10) has piston chamber (11), direction At least part of outer profile molded line of the end of the piston chamber (11) of cylinder head (20) side is in camber line.

23. compressor according to claim 22, which is characterized in that in first locating piece and second locating piece One be set on the end face of the piston chamber (11).

24. a kind of refrigerating plant, including compressor, which is characterized in that the compressor is any one of claim 1 to 23 institute The compressor stated.