CN113623171A

CN113623171A - Compressor cylinder head structure, compressor and thermoregulation device

Info

Publication number: CN113623171A
Application number: CN202110943361.XA
Authority: CN
Inventors: 吴小凌; 陈会平; 吴丽华; 张凤琦
Original assignee: Wanbao Group Compressor Co ltd
Current assignee: Wanbao Group Compressor Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2021-11-09
Anticipated expiration: 2041-08-17
Also published as: CN113623171B

Abstract

The invention discloses a compressor cylinder head structure, a compressor and temperature regulating equipment, which comprise an oil blocking part, a cylinder cover and a cylinder seat, wherein the cylinder cover is connected with the cylinder seat, the oil blocking part is arranged on the outer side end face of the cylinder cover far away from the cylinder seat, the top of the oil blocking part is provided with a raised oil collecting wing, the oil collecting wing is higher than the top end face of the cylinder cover, the top of the cylinder cover is provided with an oil collecting tank, the oil collecting tank is matched with the oil collecting wing and used for collecting refrigerating machine oil splashed from the top of a crankshaft, the outer side end face of the cylinder cover far away from the cylinder seat is provided with an oil guide tank, and the oil guide tank is communicated with the oil collecting tank. The compressor cylinder head heat dissipation device has a better heat dissipation function, and avoids overhigh temperature of the compressor cylinder head and carbon deposition of the compressor.

Description

Compressor cylinder head structure, compressor and thermoregulation device

Technical Field

The invention is used in the field of compressors, and particularly relates to a compressor cylinder head structure, a compressor and temperature regulating equipment.

Background

Small refrigeration appliances such as household refrigerators, light commercial refrigerators, and the like mainly use reciprocating piston compressors. When the reciprocating piston type compressor works, the motor drives the crankshaft to rotate, the eccentric part of the crankshaft drives the connecting rod to swing, and the connecting rod pushes the piston to reciprocate so as to finish the processes of air suction, compression and exhaust of the compressor. One of the operating characteristics of a piston refrigeration compressor is a high compression ratio and a high discharge temperature, in particular a high cylinder head temperature. Therefore, when the refrigerating system is in a severe working condition, the temperature of the cylinder head is too high, the materials such as refrigerating machine oil, refrigerant and the like are cracked and carbonized at high temperature, and the serious carbon deposition can cause the leakage, poor refrigeration and even blockage in the compressor.

At present, small refrigeration appliances such as refrigerators and freezers are gradually turning to R290 refrigerant. Compared with the R600a and R134a refrigerants which are widely used at present, the R290 refrigerant is characterized by higher discharge pressure, higher discharge temperature and higher cylinder head temperature, and therefore, the carbon deposition failure of the compressor is more easily caused.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides a compressor cylinder head structure, a compressor and temperature regulating equipment, which have a better heat dissipation function and avoid overhigh temperature of the compressor cylinder head and carbon deposition of the compressor.

The technical scheme adopted by the invention for solving the technical problems is as follows:

in a first aspect, the compressor cylinder head structure comprises an oil blocking part, a cylinder cover and a cylinder block, wherein the cylinder cover is connected to the cylinder block, the oil blocking part is arranged on the outer side end face, away from the cylinder block, of the cylinder cover, a raised oil collecting wing is arranged at the top of the oil blocking part and higher than the top end face of the cylinder cover, an oil collecting groove is arranged at the top of the cylinder cover and matched with the oil collecting wing to collect refrigerating machine oil splashed from the top of a crankshaft, an oil guiding groove is arranged on the outer side end face, away from the cylinder block, of the cylinder cover, and the oil guiding groove is communicated with the oil collecting groove.

With reference to the first aspect, in certain implementations of the first aspect, the oil blocking member is coupled to the cylinder block and clamps the cylinder head, and the cylinder head is defined by the oil blocking member to the cylinder block.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the oil blocking member includes a pressing portion and a plurality of fixing wings disposed on a peripheral edge of the pressing portion, the fixing wings are provided with cylinder head screw mounting holes, and the oil blocking member is fastened to the cylinder block by cylinder head screws disposed in the cylinder head screw mounting holes.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the fixed wings are connected with the pressing portion through connecting portions, the connecting portion of one of the fixed wings is a planar connecting portion, the connecting portions of the other fixed wings are non-planar connecting portions, and the cylinder head is provided with a planar positioning surface matched with the planar connecting portion and a non-planar positioning surface matched with the non-planar connecting portion.

With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the compression portion includes an elastic sheet, and a middle portion of the elastic sheet protrudes toward the cylinder head.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the elastic piece is in a ring shape with a through hole in the middle.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the elastic piece is provided with a heat dissipation fin that is bent toward a side away from the cylinder head along a circumferential direction of the through hole.

With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the oil guide groove extends obliquely downward at an outboard end face of the cylinder block.

In a second aspect, a compressor includes the compressor cylinder head structure described in any one of the implementations of the first aspect.

In a third aspect, a temperature regulating device comprises the compressor in any one of the implementation manners of the second aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the cylinder cover is provided with an oil collecting tank and an oil guide tank, the oil collecting tank is positioned at the top of the cylinder cover and is matched with an oil collecting wing of the oil blocking part to collect the refrigerating machine oil splashed from the top of the crankshaft. The oil collecting wing of the oil baffle part is higher than the top of the cylinder cover, and has the capacity of collecting splashed refrigerating machine oil. The collected refrigerating machine oil flows into an oil sump of the cylinder head and is stored therein. The oil guide groove is arranged on the surface of the cylinder cover and communicated with the oil collecting groove. The refrigerating machine oil in the oil collecting tank flows along the oil guide groove, and the refrigerating machine oil with lower temperature carries out oil cooling heat dissipation on the cylinder cover with higher temperature, so that the temperature of the cylinder head is greatly reduced, and carbon deposition of the compressor is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an embodiment of a compressor head structure according to the present invention;

FIG. 2 is a schematic view of a cylinder head configuration of one embodiment shown in FIG. 1;

FIG. 3 is a schematic view of the oil deflector of one embodiment shown in FIG. 1;

FIG. 4 is a schematic structural view of another embodiment of an oil baffle of the present invention;

FIG. 5 is a cross-sectional view of the cylinder head of one embodiment shown in FIG. 4.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Fig. 1 and 2 show reference direction coordinate systems of embodiments of the present invention, and the embodiments of the present invention will be described below with reference to the directions shown in fig. 1 and 2.

Referring to fig. 1, 2 and 3, an embodiment of the present invention provides a compressor cylinder head structure, including an oil blocking member 1, a cylinder head 2 and a cylinder block 3, the cylinder head 2 is connected to the cylinder block 3, the cylinder head members such as a valve plate and a valve plate are disposed between the cylinder head 2 and the cylinder block 3, the oil blocking member 1 is disposed on an outer end surface of the cylinder head 2 away from the cylinder block 3, the oil blocking member 1 is connected to the cylinder head 2 or the cylinder block 3, a raised oil collecting wing 11 is disposed on a top of the oil blocking member 1, the oil collecting wing 11 is higher than an end surface of a top of the cylinder head 2, the oil collecting wing 11 blocks a splashing path of refrigerating machine oil splashed from a top of a crankshaft, an oil collecting groove 21 is disposed on the top of the cylinder head 2, the oil collecting groove 21 forms a recess on the top of the cylinder block 3, a position of the oil collecting groove 21 corresponds to a position of the oil collecting wing 11, the oil collecting groove 21 is matched with the oil collecting wing 11 for collecting the refrigerating machine oil splashed from the top of the crankshaft, the cylinder head 2 is provided with an oil guide groove 22 at the outer end surface far away from the cylinder block 3, and the oil guide groove 22 is communicated with the oil collecting groove 21.

When the compressor works, the refrigerating machine oil at the bottom of the shell is conveyed upwards through the crankshaft, one part of the refrigerating machine oil is used for lubricating the friction pair, and the other part of the refrigerating machine oil splashes around. The cylinder head 2 is provided with an oil collecting groove 21 and an oil guiding groove 22, wherein the oil collecting groove 21 is positioned at the top of the cylinder head 2 and is matched with the oil collecting wing 11 of the oil baffle part 1 to collect the refrigerating machine oil splashed from the top of the crankshaft. The oil collecting fin 11 of the oil blocking member 1 is higher than the top of the cylinder head 2 and has the ability to collect the splashed refrigerating machine oil. The collected refrigerating machine oil flows into the oil sump 21 of the cylinder head 2 and is stored therein. The oil guide groove 22 is disposed on the surface of the cylinder head 2, and communicates with the oil sump 21. The refrigerating machine oil in the oil collecting tank 21 flows along the oil guide groove 22, the refrigerating machine oil with lower temperature carries out oil cooling heat dissipation on the cylinder cover 2 with higher temperature, the temperature of the cylinder cover is greatly reduced, carbon deposition of the compressor is avoided, and particularly, an R290 refrigerant is adopted for refrigerating the compressor.

The oil blocking member 1 and the cylinder head 2 may be connected to the cylinder block 3, respectively, or the oil blocking member 1 may be attached to the cylinder head 2 and then the cylinder head 2 may be connected to the cylinder block 3. It is also possible to use the connection of some embodiments as shown in fig. 1, i.e. the oil baffle 1 is connected with the cylinder block 3 and clamps the cylinder head 2, the cylinder head 2 being limited to the cylinder block 3 by the oil baffle 1. In the present embodiment, the oil blocking member 1 has an oil blocking function and also has a function of fixing a cylinder head member such as the cylinder head 2, and thus the overall structure of the compressor cylinder head portion can be simplified and the assembling work can be simplified.

Further, the oil blocking member 1 includes a pressing portion 12 and a plurality of fixing wings 13 disposed on the peripheral edge of the pressing portion 12, for example, in the embodiment shown in fig. 1 and 3, the oil blocking member 1 has three fixing wings 13, each fixing wing 13 is provided with a head screw mounting hole 14, and the oil blocking member 1 is fastened to the cylinder block 3 by a head screw disposed in the head screw mounting hole 14.

Referring to fig. 1, 2 and 3, the fixed wings 13 are connected to the pressing portion 12 through connecting portions 15, the connecting portions 15 extend in the thickness direction of the cylinder head 2, the connecting portion 15 of one of the fixed wings 13 is a planar connecting portion, the connecting portions 15 of the other fixed wings 13 are non-planar connecting portions, such as arc-shaped connecting portions, and the cylinder head 2 is provided with a planar positioning surface 23 engaged with the planar connecting portion and a non-planar positioning surface 24 engaged with the non-planar connecting portion. The oil collecting wing 11 is arranged above the oil collecting wing after being installed through the matching of the planar connecting part and the planar positioning surface 23 and the matching of the non-planar positioning surface 24 and the non-planar connecting part.

In some embodiments, referring to fig. 5, in order to improve the stability of the cylinder head part connection, the pressing portion 12 includes an elastic sheet, the middle portion of which protrudes toward the cylinder head 2, and the entire oil blocking part 1 forms an elastic clip. After the cylinder head screw is fastened, the bulge of the elastic sheet is abutted against the outer side end face of the cylinder cover 2, the bulge of the elastic sheet generates elastic deformation and presses the cylinder cover 2 on the inner side, and therefore more stable axial locking force is generated.

Referring to fig. 3, 4 and 5, the elastic sheet is in a ring shape with a through hole in the middle, the elastic sheet extends along the circumferential edge of the cylinder head 2, the periphery of the elastic sheet is connected with the cylinder block 3 through a plurality of fixing wings 13, and the elastic sheet protrudes toward the cylinder head 2 at the through hole to apply elastic pressing force to the cylinder head 2. The annular design of the elastic sheet not only ensures the limit requirement of the cylinder cover 2, but also increases the heat dissipation effect of the cylinder cover 2 in a manner of leaving a space.

Further, referring to fig. 3 and 4, in order to further enhance the heat dissipation effect, the elastic sheet may further be provided with a heat dissipation fin 16 bent toward the side away from the cylinder head 2 along the circumferential direction of the through hole. The heat radiating fins 16 may be formed by bending the material while punching through holes in the middle of the elastic sheet.

In order to enhance the heat dissipation effect of the refrigerating machine oil flowing along the oil guide groove 22, referring to fig. 2, the oil guide groove 22 extends obliquely downward at the outer end surface of the cylinder block 3. The refrigerating machine oil flows down along the oil guide groove 22 by the gravity, wherein the inclined oil guide groove 22 lengthens the flow path of the refrigerating machine oil.

Embodiments of the present invention provide a compressor including a compressor cylinder head structure in any of the above embodiments.

An embodiment of the invention provides a temperature adjusting device, which comprises the compressor in any one of the above embodiments. The temperature adjusting device comprises a heat pump device such as an air conditioner, a refrigerator and the like.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.

Claims

1. The utility model provides a compressor cylinder head structure, its characterized in that includes oil blocking part, cylinder head and cylinder block, the cylinder head connect in the cylinder block, oil blocking part set up in the cylinder head is kept away from the outside terminal surface of cylinder block, oil blocking part top is equipped with bellied oil collecting wing, oil collecting wing is higher than the top terminal surface of cylinder head, the cylinder head top is equipped with the oil collecting tank, the oil collecting tank with oil collecting wing cooperation is used for collecting the refrigerator oil that splashes from the bent axle top, the cylinder head is keeping away from the outside terminal surface of cylinder block is equipped with leads the oil groove, lead the oil groove with the oil collecting tank intercommunication.

2. The compressor cylinder head structure of claim 1, wherein the oil blocking member is coupled to the cylinder block and clamps the cylinder head, the cylinder head being defined by the oil blocking member to the cylinder block.

3. The compressor cylinder head structure according to claim 2, wherein the oil blocking member includes a pressing portion and a plurality of fixing wings provided at an outer peripheral edge of the pressing portion, the fixing wings being provided with cylinder head screw mounting holes, the oil blocking member being fastened to the cylinder block by cylinder head screws provided at the cylinder head screw mounting holes.

4. The structure of claim 3, wherein the fixed wings are connected to the compressing portion by connecting portions, the connecting portion of one of the fixed wings is a planar connecting portion, the connecting portions of the other fixed wings are non-planar connecting portions, and the cylinder head has a planar positioning surface engaged with the planar connecting portion and a non-planar positioning surface engaged with the non-planar connecting portion.

5. The compressor cylinder head structure of claim 3, wherein the compression portion includes an elastic sheet, a middle portion of which protrudes toward the cylinder head.

6. The structure of claim 5, wherein the elastic sheet is in the shape of a ring with a through hole in the middle.

7. The compressor cylinder head structure according to claim 6, wherein the elastic piece is provided with a heat radiation fin bent to a side away from the cylinder head along a circumferential direction of the through hole.

8. The compressor cylinder head structure of claim 1, wherein the oil guide groove extends obliquely downward at an outer end surface of the cylinder block.

9. A compressor characterized by comprising the compressor cylinder head structure of any one of claims 1 to 8.

10. Tempering device, characterized in that it comprises a compressor according to claim 9.