CN217462466U

CN217462466U - Compressor and refrigeration equipment

Info

Publication number: CN217462466U
Application number: CN202220607954.9U
Authority: CN
Inventors: 戚斐斐; 刘建如; 张奎; 王一鸣; 迟华龙
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-09-20
Anticipated expiration: 2032-03-18

Abstract

The utility model discloses a compressor and refrigeration plant, wherein, the compressor includes: the piston cylinder comprises a cylinder body with a piston cavity and a cylinder cover arranged at one end of the cylinder body; a piston reciprocating in the piston chamber to compress a refrigerant introduced into the piston chamber; the discharge valve is arranged at one end of the cylinder body and covered by the cylinder cover, and a discharge cavity for discharging the refrigerant is formed between the cylinder cover and the discharge valve; the discharge valve has a closed state for closing the piston cavity and an open state for communicating the discharge cavity with the piston cavity; the oil inlet channel is communicated with the piston cavity to supply oil to a gap between the cylinder body and the piston; an oil outlet passage communicating with the piston chamber to discharge oil in the piston chamber; a cylinder head cover disposed outside the cylinder head and forming a flow cavity between the cylinder head and the cylinder head cover. The utility model discloses can effectual reduction cylinder cap surface's temperature, promote the work efficiency of compressor.

Description

Compressor and refrigeration equipment

Technical Field

The utility model relates to a compressor technical field, especially compressor and refrigeration plant.

Background

A compressor is a mechanical device that compresses and raises the pressure of air, refrigerant, or other various working gases by receiving power from a power generation device such as an electric motor or a turbine. Compressors are widely used in household appliances such as refrigerators and air conditioners or in the entire industrial field.

A reciprocating compressor in which a compression space for sucking or discharging a working gas is formed between a piston and a piston cylinder, and the piston is linearly reciprocated inside the piston cylinder to compress a refrigerant; a linear compressor capable of improving compression efficiency and simplifying an overall structure without a mechanical loss due to motion conversion by directly connecting a piston to a linear reciprocating driving motor has been extensively developed in a reciprocating compressor.

In the linear compressor, a piston is linearly reciprocated inside a piston cylinder by a linear motor located inside a hermetic shell, for sucking, compressing and discharging a refrigerant. The piston cylinder generally comprises a cylinder body, a cylinder cover and a valve body, wherein the cylinder cover and the valve body are arranged at one end of the cylinder body, the valve body is abutted against one end of the cylinder body, a compression space is formed between the piston and the valve body, the cylinder cover is generally covered on the outer side of the valve body, a discharge cavity is formed between the valve body and the cylinder cover, the piston compresses a refrigerant in the compression space in the moving process, the valve body can be opened after the pressure of the refrigerant in the compression space is increased, the valve body, the compression space and the discharge cavity are connected after the valve body is opened, and the refrigerant is discharged out of the compressor through a discharge channel by the discharge cavity.

In the above process, since the refrigerant discharged into the discharge cavity is a high-temperature and high-pressure gas, the temperature of the gas is high, and the cylinder cover for sealing the discharge cavity is generally made of a metal member, the temperature of the gas is also increased, and if the cylinder cover is continuously maintained at a high temperature, the compression efficiency of the compressor is negatively affected, and the efficiency of the compressor is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compressor to solve not enough among the prior art, it can effectual reduction cylinder cap surface's temperature, promoted the work efficiency of compressor.

The utility model provides a compressor, include:

the piston cylinder comprises a cylinder body with a piston cavity and a cylinder cover arranged at one end of the cylinder body;

a piston reciprocating in the piston chamber to compress refrigerant entering the piston chamber;

the discharge valve is arranged at one end of the cylinder body and covered by the cylinder cover, and a discharge cavity for discharging the refrigerant is formed between the cylinder cover and the discharge valve; the discharge valve has a closed state closing the piston chamber and an open state communicating the discharge cavity with the piston chamber;

an oil inlet passage communicating with the piston chamber to supply oil to a gap between the cylinder block and the piston;

an oil outlet passage communicating with the piston chamber to discharge oil in the piston chamber;

a cylinder head cover disposed outside the cylinder head and forming a flow cavity between the cylinder head and the cylinder head cover; the flowing cavity is communicated with the oil outlet channel so that fluid flowing out of the oil outlet channel cools the cylinder cover when flowing through the flowing cavity, and a flowing outlet hole for discharging the fluid in the flowing cavity is formed in the cylinder cover.

As a further improvement of the utility model, the cylinder cap has the cylinder cap body, be provided with the court on the cylinder cap body the blow-down tank that the piston chamber opening set up, the cylinder cap body has and forms the diapire and the setting of blow-down tank bottom are in annular lateral wall on the diapire, the cavity that flows is followed annular lateral wall's the outside is extended and is set up.

As a further improvement of the present invention, the cylinder head cover has a cover body, and a cover body groove for accommodating the cylinder head body is formed on the cover body; the cover body is provided with a cover body bottom which is covered outside the bottom wall and matched with the bottom wall and a cover body wall which is arranged on the cover body bottom, the flowing cavity is formed between the cover body wall and the annular side wall, and the flowing outlet is arranged on the cover body wall.

As a further improvement of the present invention, the cover bottom and the position where the cover wall is combined are pressed and attached to the annular side wall.

As a further improvement of the utility model, the cylinder body extends the setting along horizontal direction, the compressor still has the connection oil outlet channel with the interface channel of the cavity that flows, in vertical direction, interface channel's export setting is in the upside of cylinder cap body, it is in to flow the relative setting of portal the downside of cylinder cap body.

As a further improvement of the utility model, the compressor still has the intercommunication discharge passage of cavity, the bottom of cylinder cap be provided with the cylinder cap connecting hole of discharge passage looks adaptation, cylinder cap connecting hole opening down, be provided with on the cover body and be used for outwards exposing the breach of cylinder cap connecting hole.

As a further improvement of the present invention, a fitting portion adapted to the cylinder cover and fitted to the cylinder cover is formed at an edge of the gap in the cover groove; the two flow outlets are arranged on two opposite sides of the notch.

As a further improvement of the present invention, the cylinder cover further has an annular crimping part, which is disposed at the notch edge of the discharge groove and abuts against the cylinder body;

the cylinder head cover has a cover body installation portion, the cover body installation portion is followed the notch edge setting in cover body groove has with the crimping board that annular crimping portion laminated mutually.

As a further improvement of the present invention, the compressor further has a cylinder support, and the cylinder is positioned on the cylinder support; the oil outlet channel comprises a bracket oil outlet segment arranged on the cylinder bracket;

the annular crimping portion is abutted to the cylinder body support, the connecting channel extends along the transverse direction and is arranged on the annular crimping portion in a deviating mode at the position of the cover body installation portion, and the connecting channel is communicated with the support oil outlet section.

As a further improvement, the support segmentation of producing oil includes extends the vertical oil outlet that sets up along vertical direction, the export setting of vertical oil outlet is in the top of cylinder body support, still have the intercommunication on the cylinder body support vertical oil outlet with interface channel's connecting hole, the connecting hole is along the perpendicular to the direction of vertical oil outlet extends the setting.

As a further improvement of the present invention, the compressor further comprises a heat sink having a heat dissipation channel, the heat sink being configured to release heat in the heat dissipation channel; the vertical oil outlet is communicated with the heat dissipation channel.

The utility model discloses another embodiment still discloses refrigeration plant, including box and the refrigerating system of setting on the box, refrigerating system includes the compressor.

Compared with the prior art, the utility model discloses be provided with the cylinder head cover outside the cylinder head and form the space that flows between cylinder head cover and cylinder head, the lubricating oil that flows out from the piston intracavity and be used for between lubricated piston and the cylinder body clearance flows into the space that flows from the piston chamber after discharging to carry out the heat exchange with the cylinder head when flowing through the space, and then can effectual reduction cylinder head surface's temperature, promoted the work efficiency of compressor.

Drawings

Fig. 1 is a schematic view of an installation structure of a piston cylinder of a compressor in a shell, which is disclosed by the embodiment of the invention;

fig. 2 is a schematic view of an assembly structure of a piston cylinder and a heat sink of the compressor disclosed in the embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of a piston cylinder of a compressor and a heat sink after being assembled according to an embodiment of the present invention;

fig. 4 is a schematic view of the internal structure of a piston cylinder of a compressor after installation, which is disclosed by the embodiment of the invention;

fig. 5 is a schematic view of a split internal structure of the compressor disclosed in the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a piston cylinder and a cylinder head cover of the compressor disclosed by the embodiment of the invention after being assembled;

fig. 7 is an exploded view of the piston cylinder and cylinder head cover assembly of the compressor disclosed in the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a compressor according to an embodiment of the present invention after assembling a valve body and a cylinder cover;

fig. 9 is a schematic view of a first structure of a cylinder head of a compressor according to an embodiment of the present invention;

fig. 10 is a second schematic structural diagram of a cylinder head of a compressor disclosed in an embodiment of the present invention;

fig. 11 is a first structural schematic diagram of a cylinder head cover of a compressor according to an embodiment of the present invention;

fig. 12 is a second structural schematic diagram of a cylinder head cover of the compressor disclosed by the embodiment of the invention;

description of reference numerals: 1-shell, 11-inner chamber

2-piston cylinder, 21-piston cavity, 22-cylinder body, 221-oil passing groove, 222-cylinder body oil outlet section, 2221-radial oil hole, 2222-oblique oil hole and 223-cylinder body oil inlet section

23-cylinder cover, 230-discharge groove, 231-cylinder cover connecting hole, 232-cylinder cover body, 2321-bottom wall, 2322-annular side wall, 233-annular crimping part, 234-mounting part,

24-a discharge cavity, 25-a closure,

4-cylinder body support, 41-support oil outlet subsection, 411-vertical oil outlet hole, 42-connecting hole, 43-vertical oil outlet pipe, 44-downstream connecting pipe,

5-a discharge valve, 51-a valve body, 52-a return spring,

6-discharge channel, 61-discharge pipe, 62-discharge pipe connection,

7-cylinder head cover, 70-flow cavity, 71-flow outlet, 72-cover, 721-cover bottom, 722-cover wall, 73-cover groove, 74-gap, 75-fitting, 76-cover mounting, 761-crimping plate, 762-positioning edge, 77-connecting part,

8-radiating piece, 81-radiating body, 82-radiating channel, 9-connecting channel and 10-oil supply device.

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 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 drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The embodiment of the utility model discloses a compressor, this compressor be applied to in the refrigeration plant as refrigerating system's partly, the compressor connect with evaporimeter and condenser between be used for compressing into the highly compressed gas of high temperature with the secondary refrigerant that the evaporimeter came out, then enter into the condenser and cool off.

Specifically, as shown in fig. 1 to 12, the compressor includes: the piston-cylinder type hydraulic cylinder comprises a shell 1 with an inner cavity 11, a piston cylinder 2 arranged in the inner cavity 11, a piston arranged in the piston cylinder 2 in a sliding mode and a cylinder body bracket 4 arranged in the inner cavity 11; the cylinder body bracket 4 is used for positioning and supporting the piston cylinder 2;

the piston cylinder 2 includes a cylinder block 22 having a piston chamber 21, and a cylinder head 23 provided at one end of the cylinder block 22, and the piston reciprocates in the piston chamber 21 to compress refrigerant entering the piston chamber 21. The cylinder 22 extends along the transverse direction and is positioned and supported on the cylinder bracket 4, and the piston linearly reciprocates along the transverse direction to realize the compression of the refrigerant. In a specific embodiment, a refrigerant inlet hole (not shown) into the piston cavity 21 may be provided on the piston, and the refrigerant is introduced into the piston cavity 21 through the refrigerant inlet hole.

As shown in fig. 3 to 4, the compressor further has a discharge valve 5, the discharge valve 5 has a valve body 51 disposed at one end of the cylinder 22, the valve body 51 is covered in the cylinder cover 23 and forms a discharge cavity 24 between the valve body 51 and the cylinder cover 23, and the valve body 51 has a closed state abutting against and fixed on the cylinder 22 to close the piston cavity 21 and an open state communicating the piston cavity 21 and the discharge cavity 24. The refrigerant compressed by the piston in the piston chamber 21 at the time of the open state is discharged from the piston chamber 21 to the discharge cavity 24, and finally discharged out of the compressor through the discharge passage 6 communicating with the discharge cavity 24 (shown in fig. 2).

Specifically, the valve body 51 is opposite to the piston cavity 21 and has a shape matched with the piston cavity, and one side of the valve body 51 opposite to the cylinder 22 has a circular structure. And the size of the valve body 51 is larger than that of the opening of the piston chamber 21 so that the valve body 51 forms a sealing cover for the opening of the piston chamber 21 in the closed state;

in this embodiment, the valve body 51 is pushed away from the cylinder 22 by the high-pressure gas in the piston chamber 21 to communicate the piston chamber 21 with the discharge cavity 24, thereby placing the valve body 51 in an open state.

As shown in fig. 7 to 8, in order to conveniently realize the reset of the valve body 51 after opening, the exhaust valve 5 further has a reset spring 52, the reset spring 52 is disposed between the valve body 51 and the cylinder cover 23, two ends of the reset spring 52 are respectively positioned and supported on the valve body 51 and the cylinder cover 23, the valve body 51 compresses the reset spring 52 to enable the reset spring 52 to accumulate potential energy during the opening of the valve body 51, and the valve body 51 automatically resets under the action of the reset spring 52 after the external force driving the valve body 51 to open is removed.

In order to conveniently realize the installation and fixation of the valve body 51 on the cylinder cover 23, a positioning column matched with the return spring 52 is arranged on the valve body 51, and the return spring 52 is sleeved outside the positioning column and is in interference fit with the positioning column. Correspondingly, the cylinder cover 23 is also provided with a positioning column matched with the return spring 52, it can be understood that the return spring 52 is fixed at the central position of the valve body 51, and the return spring 52 has a cylindrical structure.

When the piston moves towards the direction close to the valve body 51, when the air pressure in the piston cavity 21 is low and is not enough to overcome the pushing force of the return spring 52, the valve body 51 is in a closed state, and at the moment, the valve body 51 is abutted against the cylinder body 22 under the pushing action of the return spring 52;

when the air pressure in the piston chamber 21 is compressed enough, the air pressure in the piston chamber 21 pushes the valve body 51 to move away from the cylinder 22 to open the valve body 51, so that the compressed refrigerant in the piston chamber 21 is discharged to the discharge cavity 24 and then discharged out of the compressor through the discharge passage 6 communicating with the discharge cavity 24. When the air pressure in the piston chamber 21 is reduced, the left and right lower valve bodies 51 of the return spring 52 are pressed against the cylinder 22 again to form a closed state.

As shown in fig. 2, the compressor further has a discharge passage 6 communicated with the discharge cavity 24, the discharge passage 6 includes a discharge pipe 61 and a discharge pipe connector 62, a cylinder head connection hole 231 adapted to the discharge pipe connector 62 is provided on the cylinder head 23, and the cylinder head connection hole 231 is communicated with the discharge cavity 24. The discharge passage 6 leads the high-temperature and high-pressure refrigerant compressed in the discharge cavity 24 out of the compressor and is delivered to the condenser through the discharge pipe 61.

The compressor is characterized in that the piston needs lubricating oil to lubricate the piston and the cylinder body 22 in the process of sliding in the piston cavity 21, the compressor is also provided with an oil inlet channel and an oil outlet channel, and the oil inlet channel is communicated with the piston cavity 21 to supply oil to a gap between the cylinder body 22 and the piston; the oil outlet passage communicates with the piston chamber 21 to discharge the lubricating oil in the piston chamber 21.

As shown in fig. 3 and 5, in order to facilitate the circulation of the lubricating oil, the compressor further has an oil supply device 10 disposed in the inner cavity 11, the oil inlet channel is communicated with the oil supply device 10 and the piston cavity 21, an inlet of the oil supply device 10 is communicated with the inner cavity 11, the lubricating oil is disposed at the bottom of the inner cavity of the housing 1, and under the action of the oil supply device 10, the lubricating oil enters the piston cavity 21 through the oil inlet channel, and is discharged through the oil outlet channel after the gap between the piston and the cylinder 22 is lubricated by the oil supply. Since the lubricant is generally placed directly in the inner cavity 11 of the housing 1, the oil supply device 10 is arranged on the underside of the piston cylinder 2 and between the piston cylinder 2 and the bottom of the housing 1.

Lie in on the cylinder body 22 be provided with oil groove 221 on the inside wall of piston chamber 21, it sets up to cross oil groove 221 in the activity stroke of piston, it is relative with the piston position always to cross oil groove 221 in the piston activity in-process, the oil feed passageway with the passageway of producing oil all with cross oil groove 221 intercommunication set up the flow of the realization lubricating oil that oil groove 221 can be better on the inside wall of cylinder body 22, and the realization that also can be better is to the lubrication in clearance between piston and the cylinder body 22.

As shown in fig. 4, in order to better lubricate the side wall of the piston, the outlet of the oil inlet channel and the inlet of the oil outlet channel are oppositely arranged at two opposite sides of the piston cavity 21, because the cylinder body 22 is arranged along the transverse direction, the piston cavity 21 of the cylinder body 22 penetrates along the transverse direction, the side wall of the piston cavity 21 has a top and a bottom, the outlet of the oil inlet channel is arranged at the bottom of the inner wall of the piston cavity 21, and the inlet of the oil outlet channel is arranged at the top of the inner wall of the piston cavity 21. The arrangement of the structure enables lubricating oil to enter from the bottom of the piston cavity 21 and then be discharged from the top of the piston cavity 21, and the lubricating oil can fully flow in the piston cavity 21, so that the movement of the piston is better lubricated.

In the prior art, the lubricating oil discharged through the oil outlet channel is directly injected into the inner cavity 11, then is gathered at the bottom of the inner cavity 11, is sucked by the oil supply device 10 again, and then enters the piston cavity 21 through the oil inlet channel for recycling. The design of above-mentioned structure can not effectually be cooled down to lubricating oil to make the lubricating oil temperature higher, higher lubricating oil temperature influences the result of use of lubricating oil easily.

As shown in fig. 1 to 3, in order to better cool down the lubricating oil, in the present embodiment, the compressor further includes a heat sink 8, where the heat sink 8 includes a heat sink body 81 and a heat sink channel 82 disposed on the heat sink body 81, and the heat sink 8 releases heat in the heat sink channel 82 to the outside of the casing through the casing 1; when the lubricating oil flows through the heat dissipation channel 82, the heat of the lubricating oil is dissipated to the outside of the compressor through the shell 1, so that the cooling of the lubricating oil is realized. In this embodiment, a heat sink opening toward the housing is formed on the heat dissipation body 81, and the heat sink is attached to the housing 1 to form the heat dissipation channel 82 between the heat dissipation body 81 and the housing 1.

Since the lubricating oil needs to be sent into the heat dissipation passage 82 of the heat dissipation member 8 for heat dissipation, the oil outlet passage communicating with the piston chamber 21 communicates with the heat dissipation passage 82. Because the arrangement of the heat sink 8 increases the loop for returning the lubricating oil to the inner cavity 11, the increase of the loop inevitably causes the lubricating oil to flow unsmoothly in the oil outlet channel, and particularly after the high-pressure gas in the piston cavity 21 is mixed in the oil outlet channel, the high-pressure gas can block the pushing action of the oil supply device 10 on the lubricating oil, so that the flowing unsmoothly of the lubricating oil is caused.

As shown in fig. 2 to 4, in order to avoid the above problem, the compressor disclosed in the present embodiment further has a connection passage 9, and the connection passage 9 communicates with the oil outlet passage to discharge the high-pressure gas in the oil outlet passage. Through the setting of connect the passageway 9 can be timely discharge the high-pressure gas in the oil duct, and then effectively avoid oil duct to get into the pipeline of heat dissipation channel 82 and have high-pressure gas, and then be favorable to smooth and easy flow of lubricating oil, the better recycle who realizes lubricating oil.

Connecting channel 9 with inner chamber 11 intercommunication and the length of connecting channel 9 self is shorter relatively, and connecting channel 9 communicates the pipeline between the inner chamber 11 also shorter relatively, and the setting up of structure can make in fact that connecting channel 9 can be rapid discharge the lubricating oil that has high-pressure refrigerant in the main entrance to inner chamber 11 like this to can avoid the interior amasss of oil outlet channel to have high-pressure refrigerant, make the more unobstructed of the flow of the lubricating oil in the oil outlet channel. As can be appreciated.

In a specific embodiment, the connecting channel 9 can be regarded as a branch channel connected in parallel with the oil outlet channel, the oil outlet channel specifically includes a main channel and a branch channel communicated with the main channel, the main channel is connected in parallel with the branch channel, the main channel is communicated with the heat dissipation channel to mainly deliver the lubricating oil to the heat dissipation channel of the heat dissipation member, the branch channel is communicated with the inner cavity 11, and the length of the branch channel is relatively short, so as to realize rapid discharge of the refrigerant to the inner cavity 11.

In a specific embodiment, the oil outlet channel generally comprises a counter-flow oil outlet section and a counter-flow oil outlet section, and the flow direction of the fluid in the counter-flow oil outlet section flows from bottom to top in the vertical direction, that is, the gravity of the fluid in the counter-flow oil outlet section needs to be overcome when the fluid flows, and it should be noted that the counter-flow oil outlet section is not necessarily arranged along the vertical direction, and also can be obliquely arranged along the vertical direction or be bent along the vertical direction.

The fluid in the forward flow oil outlet section of the forward flow oil outlet section flows from top to bottom in the vertical direction, that is, the fluid in the forward flow oil outlet section can flow spontaneously under the action of its own gravity, it should be noted that the fluid flowing in the reverse flow oil outlet section and the forward flow oil outlet section is generally the mixture of the lubricating oil and the refrigerant, and most commonly, the gaseous refrigerant is mixed into the lubricating oil. In the present example, the connecting channel 9 communicates with the counter flow oil outlet section. Because the countercurrent oil outlet section flows from bottom to top, if high-pressure gas is mixed in the countercurrent oil outlet section, the lubricating oil can flow smoothly, and the connecting channel 9 is communicated with the countercurrent oil outlet section, so that the pressure relief effect can be better realized.

Since the cylinder 22 is positioned on the cylinder support 4 and extends in the transverse direction; in the vertical direction, the cylinder 22 is formed with a top wall and a bottom wall that are oppositely disposed;

3-4, the reverse flow oil discharging section comprises a block oil discharging section 222 disposed on the top wall of the block, and the oil inlet passage comprises a block oil inlet section 224 disposed on the bottom wall of the block; in the vertical direction, the inlet of the cylinder body oil outlet section 222 and the outlet of the cylinder body oil inlet section 223 are respectively located at the upper side and the lower side of the inner wall of the piston cavity 21, and the cylinder body oil outlet section 222 and the cylinder body oil inlet section 224 are both communicated with the oil passing groove 221.

In the vertical direction, the outlet of the cylinder body oil outlet section 222 is arranged at the top of the cylinder body 22, and the inlet of the cylinder body oil inlet section 223 is arranged at the bottom of the cylinder body 22. Because lubricating oil is carried from inner chamber 11 and enters into the oil feed passageway, consequently set up cylinder body oil feed section 223 can be better realize carrying the operation of lubricating oil in the bottom of cylinder body 22 to make lubricating oil can be complete after being inhaled from the bottom of cylinder body 22 and pass through piston cavity 21, and finally flow out from the top in piston cavity 21, thereby better realization lubricated piston's effect.

The counter-flow oil outlet section is also provided with a support oil outlet section 41 arranged on the cylinder body support 4; the inlet of the support oil outlet section 41 is opposite to and communicated with the outlet of the cylinder oil outlet section 222; the outlet of the support oil outlet section 41 is arranged at the top of the cylinder support 41.

In the transverse direction, the inlet of the cylinder oil outlet section 222 and the outlet of the cylinder oil outlet section 222 are staggered, the inlet of the cylinder oil outlet section 222 is arranged on the side far away from the cylinder cover 23 relative to the outlet of the cylinder oil outlet section 222, and the inlet of the cylinder oil outlet section 222 is arranged at the position deviated from the cylinder support 4.

When the piston slides in the piston cavity 21, a cavity formed between the piston and the valve body 51 is used as a part of the piston cavity 21 for storing a compression chamber, in order to ensure that the compression chamber has enough space, the sliding stroke range of the piston needs to have a certain distance with the valve body 51, and as the valve body 51 is generally abutted against one end of the cylinder 22, that is, the sliding stroke range of the piston needs to have a certain distance with one end of the cylinder 22. Because the backflow oil outlet section is provided with the support oil outlet section 41 arranged on the cylinder body support 4, and the positions of the support oil outlet section and the cylinder body oil outlet section 222 need to be opposite, the arrangement of the structure can ensure that the width of the cylinder body support 4 is conveniently communicated with the cylinder body oil outlet section 222 on the basis of narrower width.

The cylinder block oil outlet section 222 in this embodiment includes a radial oil hole 2221 extending in a radial direction of the cylinder block 22 and an oblique oil hole 2222 communicating the radial oil hole 2221 with the piston chamber 21, the oblique oil hole 2222 extending in a direction oblique to an axial direction of the cylinder block 22, an opening formed at a top of the cylinder block by the radial oil hole 2221 forming an outlet of the cylinder block oil outlet section 222, and an opening formed at an inner wall of the piston chamber 21 by the oblique oil hole 2222 forming an inlet of the cylinder block oil outlet section 222.

Be close to on the cylinder body 22 the one end of cylinder cap 23 is preceding terminal surface, be provided with on the cylinder body 22 along the skew the slant perforation that the axial direction of cylinder body 22 extended to set up is in with the setting shutoff piece 25 in the slant perforation, the fenestrate export of slant sets up on the preceding terminal surface, the fenestrate import of slant sets up on the inner wall of piston chamber 21, shutoff piece and 25 form between the fenestrate import of slant oilhole 2222 of slant.

The above structure can more conveniently form a channel on the cylinder 22, the difficulty of forming a bent aperture on the cylinder 22 is high, in this embodiment, the oblique perforation of the oblique piston cavity 21 is formed on the end surface of the cylinder 22, and one end of the oblique perforation is blocked by the blocking piece 25, so as to better realize the machine-shaping of the oblique oil hole 2222, and then the radial oil hole 2221 and the oblique oil hole 2222 are communicated through the radial oil hole 2221 arranged in the radial direction of the cylinder 22, so as to form a complete cylinder oil outlet section on the cylinder 22.

In the present embodiment, the cylinder block 22 has a thinning section and a thickening section juxtaposed in the axial direction, the thickening section being opposite to the position of the block bracket 4, and the radial oil holes 2221 being provided in the thickening section.

The support oil outlet section 41 comprises a vertical oil outlet hole 411 which extends along the vertical direction, the inlet of the vertical oil outlet hole 411 is opposite to the outlet of the cylinder oil outlet section 222, and the outlet of the vertical oil outlet hole 411 is positioned at the top of the cylinder support 4;

still have the intercommunication on the cylinder body support 4 vertical oil outlet 411 with connecting channel 9's connecting hole 42, connecting hole 42 is along the perpendicular to vertical oil outlet 411's direction extends the setting, and connecting hole 42 extends the setting along horizontal direction.

The countercurrent oil outlet section further comprises a vertical oil outlet pipe 43 arranged on the vertical oil outlet hole 411, the outlet position of the vertical oil outlet pipe 43 is higher than the inlet of the heat dissipation channel 82 in the vertical direction, the forward flow oil outlet section comprises a forward flow connecting pipe 44 which connects the outlet of the vertical oil outlet pipe 43 and the inlet of the heat dissipation channel 82, and the height of the forward flow connecting pipe 44 is gradually reduced along with the flowing direction of fluid in the forward flow connecting pipe.

As shown in fig. 3 to 5, in the present embodiment, the outlet of the connecting passage 9 is disposed at the upper side of the cylinder head 23, and the fluid discharged from the connecting passage 9 is used for cooling the cylinder head 23. Because the discharge cavity 24 is formed between the cylinder cover 23 and the valve body 51, the high-temperature and high-pressure refrigerant gas discharged from the piston cavity 21 after the valve body 51 is opened enters the discharge cavity 24, the refrigerant can transfer heat to the cylinder cover 23, the temperature of the cylinder cover 23 is high, and the increase of the temperature of the cylinder cover 23 easily causes the reduction of the compression efficiency of the compressor. In this embodiment, the fluid discharged from the connecting passage 9 cools the cylinder head 23, so that the temperature of the cylinder head 23 can be effectively reduced, and the operating efficiency of the compressor can be improved.

As shown in fig. 9 to 10, in the present embodiment, the cylinder head 23 includes a cylinder head body 232 and an annular crimping portion 233, the cylinder head body 232 is provided with a discharge groove 230 that is opened toward the piston cavity 21, the annular crimping portion 233 is provided at a notch edge of the discharge groove 230 and abuts against the cylinder body 22, and a sealing ring is further provided at a front end of the annular crimping portion 233 and the cylinder body 22.

As shown in fig. 3 and 8, the valve body 51 is disposed to cover the discharge groove 230, the opening size of the discharge groove 230 is larger than the valve body 51, the discharge groove 230 forms a relief for the valve body 51 when the valve body 51 is opened, and the return spring 52 is positioned at the bottom of the groove of the discharge groove 230.

When the valve body 51 is in a closed state, a space formed between the valve body 51 and the groove bottom of the discharge groove 230 is the discharge cavity 24, and the connecting channel 9 is arranged on the annular crimping part 233 and the connecting channel 9 is arranged on the upper side of the cylinder head body 232 in the vertical direction. Because cylinder cap body 232 is the main position that generates heat on the cylinder cap 23, with the upside that the connecting channel set up at cylinder cap body 232 can be better cool down cylinder cap 23.

As shown in fig. 11 and 12, the compressor further includes a head cover 7 covering the outside of the cylinder head 23, and a flow cavity 70 formed between the head cover 7 and the cylinder head 23, the connection passage 9 communicates with the flow cavity 70, and the head cover 7 is provided with a flow outlet hole 71 communicating the flow cavity 70 with the inner cavity 11.

As shown in fig. 3 to 4, the fluid flowing out from the oil outlet passage flows into the flow cavity 70 through the connecting passage 9 and cools the cylinder head 23 while flowing through the flow cavity 70, and the flow outlet hole 71 is used for discharging the fluid in the flow cavity 70.

In the present embodiment, by providing the cylinder head cover 7 on the outer side of the cylinder head 23, the fluid discharged from the connecting channel 9 can only flow along the flow cavity 70, and the cylinder head 23 serves as the inner wall of the flow cavity 70 to enable the lubricating oil to sufficiently contact with the cylinder head 23, so as to better reduce the temperature of the cylinder head 23.

The flow outlet 71 is disposed opposite to the lower side of the cylinder head 23 in the vertical direction. Since the connecting channel 9 entering the flow cavity 7 is arranged on the upper side of the cylinder cover 23, the flow outlet 71 is arranged on the lower side of the cylinder cover 23, so that the fluid entering the flow cavity 70 can exchange heat with the cylinder cover 23 more comprehensively and sufficiently.

In an exemplary embodiment, the head body 232 has a bottom wall 2321 forming a bottom of the discharge groove 230 and an annular side wall 2322 disposed on the bottom wall 2321, and the flow cavity 70 is disposed to extend along an outer side of the annular side wall 2322. The above structure is configured to make the lubricant flow only along the outer circumference of the annular side wall 2322 during the flowing process, that is, the fluid entering the flow cavity 70 from the connecting passage 9 mainly cools the annular side wall 2322, but does not flow through the bottom wall 2321. The arrangement of the structure can accelerate the flow of the fluid, so that the temperature reduction can be realized more efficiently.

As shown in fig. 3 to 4, in the present embodiment, the cylinder head cover 7 has a cover body 72, and a cover body groove 73 for accommodating the cylinder head body is formed in the cover body 72; the cover 72 has a cover bottom 721 arranged outside the bottom wall 2321 and adapted to the bottom wall 2321, and a cover wall 722 arranged on the cover bottom 721, the flow cavity 70 is formed between the cover wall 722 and the annular side wall 2322, and the flow outlet 71 is arranged on the cover wall 722. To better block fluid from entering the bottom wall 2321, the cover bottom 721 is pressed against the annular side wall 2322 at a location where it joins the cover wall 722.

In the vertical direction, the outlet of the connecting channel 9 is arranged on the upper side of the cylinder head body 232, and the flow outlet 71 is oppositely arranged on the lower side of the cylinder head body 232.

In this embodiment the cylinder head cover 7 is a plastic part, and the cylinder head cover 7 is arranged to cover the cylinder head 23 so as to achieve the effects of sound insulation and noise reduction, and the cylinder head cover 7 is provided with an avoiding space matched with the discharge channel 6.

As shown in fig. 11 to 12, the cylinder head connection hole 231 is disposed on the cylinder head body 232 and on the annular side wall 2322, the cylinder head connection hole 231 is opened downward and disposed at the bottom of the annular side wall 2322, and the avoiding space is disposed on the cover body 72, and in this embodiment, the avoiding space is a notch 74 disposed on the cover body 72 and used for exposing the cylinder head connection hole 231 outwards. The gap 74 is adapted to the discharge channel 6 for the passage of the discharge channel 6.

In order to make the cylinder head cover 7 have better sound insulation and noise reduction effects, an attaching part 75 which is matched with the cylinder head 23 and attached to the cylinder head 23 is formed at the edge of the gap 74 in the cover body groove 73; the setting of laminating portion 75 makes the inseparabler laminating of cylinder head cover 7 on cylinder cap 23, avoids appearing outwards exposing the opening of cylinder cap 23 with influence sound insulation and noise reduction effect.

The flow-out openings 71 are provided in two, two of the flow-out openings 71 being provided on opposite sides of the gap 74. Since the flow space 70 is partitioned at a lower position by the abutting portion 75, the two notches 74 are provided to divide the fluid flowing downward from the top of the head body 232 into two paths and flow downward along the two sides of the annular side wall 2322, and the two paths flow outward through the respective corresponding flow outlets 71. It will be appreciated that the flow space 70 can also be filled with a fluid equivalent to a sound-insulating layer between the sound-insulating cover 7 and the cylinder head 23, which provides good sound-insulating and noise-reducing effects.

In this embodiment, in order to more conveniently realize the installation and fixation of the cylinder cover 23, the cylinder cover 23 is installed and fixed on the cylinder body support 4, the annular crimping portion 233 is simultaneously abutted against the cylinder body support 4, and a plurality of installation portions 234 for installing and fixing the cylinder cover 23 are arranged on the annular crimping portion 233.

The cylinder head cover 7 further has a cover mounting portion 76 provided on the cover 72, the cover mounting portion 76 is provided along a notch edge of the cover groove 73 and has a crimping plate 761 which is fitted to the annular crimp portion 233 and a positioning edge 762 which is provided at an edge of the crimping plate 761, the positioning edge 762 is provided extending from the crimping plate 761 toward the cylinder body 22, and the positioning edge 762 is opposed to a side edge of the annular crimp portion 233. The positioning edge 762 is arranged to more conveniently realize the positioning of the cylinder cover 7 when the cylinder cover 7 is fixed, and the cylinder cover 7 is positioned at the side of the annular crimping part 233 in an overlapping manner through the positioning edge 762, so that the cylinder cover 7 is convenient to fix.

In this embodiment, the positioning edge 762 extends along one edge of the crimping plate 761. The positioning edge 762 is provided at one turn of the crimping plate 761 and forms a covering of the annular crimping portion 233 together with the crimping plate 761 to better achieve the positioning of the cylinder head cover 7 on the annular crimping portion 233 during the mounting process.

In this embodiment, three mounting portions 234 are provided, and the three mounting portions 234 are oppositely arranged in a triangular shape; be provided with on the cover body installation department 76 with installation department 234 one-to-one is used for fixing cylinder head cover 7's connecting portion 77, connecting portion 77 is for setting up connecting hole on the installation department 234 will through fastening bolt cylinder head cover 7 with cylinder head 23 installation is fixed on cylinder body support 4. The three mounting portions 234 in this embodiment can better achieve the mounting and fixing of the cylinder head 23.

When the annular crimping portion 233 abuts against the cylinder block bracket 4, the connecting passage 9 extends in the transverse direction at a position on the annular crimping portion 233 that is deviated from the cover body mounting portion 76, and the connecting passage 9 communicates with the bracket oil outlet section 41.

The utility model discloses another embodiment still discloses a refrigeration plant, including box and the refrigerating system of setting on the box, refrigerating system is including compressor, condenser, throttling arrangement and the evaporimeter of establishing ties in proper order. The compressor is the compressor. The refrigeration equipment provided by the utility model can be a refrigerator, a freezer or a wine cabinet and the like.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims

1. A compressor, comprising:

2. The compressor of claim 1, wherein: the cylinder cap has the cylinder cap body, be provided with the court on the cylinder cap body the blow-down tank that the piston chamber opening set up, the cylinder cap body has and forms the diapire of blow-down tank bottom and setting are in annular lateral wall on the diapire, the cavity that flows is followed annular lateral wall's the outside extends the setting.

3. The compressor of claim 2, wherein: the cylinder head cover is provided with a cover body, and a cover body groove for accommodating the cylinder head body is formed in the cover body; the cover body is provided with a cover body bottom which is covered outside the bottom wall and matched with the bottom wall and a cover body wall which is arranged on the cover body bottom, the flowing cavity is formed between the cover body wall and the annular side wall, and the flowing outlet is arranged on the cover body wall.

4. A compressor according to claim 3, wherein: the position of the cover body bottom combined with the cover body wall is tightly pressed and attached to the annular side wall.

5. A compressor according to claim 3, wherein: the cylinder body extends along the transverse direction and sets up, the compressor still has the connection the oil outlet channel with the interface channel of the cavity that flows, in vertical direction, interface channel's export sets up the upside of cylinder cap body, it sets up relatively to flow out the hole the downside of cylinder cap body.

6. The compressor of claim 5, wherein: the compressor still has the intercommunication discharge passage who discharges the cavity, the bottom of cylinder cap be provided with discharge passage looks adaptation's cylinder cap connecting hole, cylinder cap connecting hole opening down, be provided with on the cover body and be used for outwards exposing the breach of cylinder cap connecting hole.

7. The compressor of claim 6, wherein: an attaching part which is matched with the cylinder cover and attached to the cylinder cover is formed at the edge of the notch in the cover body groove; the two flow outlets are arranged on two opposite sides of the notch.

8. The compressor of claim 5, wherein: the cylinder cover is also provided with an annular crimping part which is arranged at the edge of the notch of the discharge groove and is abutted against the cylinder body;

9. The compressor of claim 8, wherein: the compressor also has a cylinder support on which the cylinder is positioned; the oil outlet channel comprises a bracket oil outlet segment arranged on the cylinder bracket;

10. The compressor of claim 9, wherein: the support oil outlet segmentation includes extends the vertical oil outlet that sets up along vertical direction, the export setting of vertical oil outlet is in the top of cylinder body support, still have the intercommunication on the cylinder body support vertical oil outlet with connect the passageway's connecting hole, the perpendicular to is followed to the connecting hole the direction of vertical oil outlet extends the setting.

11. The compressor of claim 10, wherein: the compressor also comprises a heat dissipation piece with a heat dissipation channel, wherein the heat dissipation piece is used for releasing heat in the heat dissipation channel; the vertical oil outlet is communicated with the heat dissipation channel.

12. A refrigeration apparatus, characterized by: comprising a tank and a refrigeration system provided on the tank, the refrigeration system comprising a compressor as claimed in any one of claims 1 to 10.