CN108799109A - Pump body assembly, fluid machine and heat exchange equipment - Google Patents
Pump body assembly, fluid machine and heat exchange equipment Download PDFInfo
- Publication number
- CN108799109A CN108799109A CN201810793005.2A CN201810793005A CN108799109A CN 108799109 A CN108799109 A CN 108799109A CN 201810793005 A CN201810793005 A CN 201810793005A CN 108799109 A CN108799109 A CN 108799109A
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- Prior art keywords
- piston bush
- pump assembly
- extension
- piston
- assembly according
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- 239000012530 fluid Substances 0.000 title claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 description 22
- 238000010586 diagram Methods 0.000 description 13
- 238000000354 decomposition reaction Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 7
- 210000002421 cell wall Anatomy 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 241000233855 Orchidaceae Species 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 239000008141 laxative Substances 0.000 description 2
- 230000002475 laxative effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides a pump body assembly, a fluid machine and heat exchange equipment. Wherein, pump body subassembly includes: at least two structural members; the cylinder is arranged between the two structural parts; the piston assembly is arranged in the cylinder and comprises a piston sleeve and a piston which is arranged in the piston sleeve in a sliding mode, an extending part is arranged on the upper end face of a structural part located below the piston sleeve, and the structural part is in limit fit with the piston sleeve through the extending part so as to prevent the piston sleeve from displacing in the radial direction relative to the structural part. The invention effectively solves the problem that the piston sleeve of the pump body assembly is easy to eccentrically rotate and influences the working efficiency of the pump body assembly in the prior art.
Description
Technical field
The present invention relates to pump assembly technical fields, are set in particular to a kind of pump assembly, fluid machinery and heat exchange
It is standby.
Background technology
Currently, in pump assembly operational process, piston bush is easy to happen eccentric, tilt rotation, cause piston bush easily with
Cylinder and piston rub, and have severely impacted the working efficiency and working performance of pump assembly.
Invention content
The main purpose of the present invention is to provide a kind of pump assembly, fluid machinery and heat transmission equipments, to solve existing skill
The piston bush of art middle pump body component easily occurs eccentric rotary, influences the problem of pump assembly working efficiency.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of pump assembly, including：At least two
A structural member；Cylinder is arranged between two structural members；Piston component, be arranged in cylinder, piston component include piston bush and
The piston being slidably arranged in piston bush, the upper surface for being located at the structural member of the lower section of piston bush have extension, structural member logical
It crosses extension and carries out limit cooperation with piston bush, to prevent piston bush relative to the displacement of structural member generation radial direction.
Further, structural member includes lower flange.
Further, structural member includes lower flange and lower limiting board, and lower limiting board extends between cylinder and lower flange
The upper surface in lower limiting board or lower flange is arranged in portion.
Further, extension stretch into piston bush and with the inner surface limit stops of piston bush.
Further, the lower face of piston bush has the 6th limiting groove, extension stretch into the 6th limiting groove and with
6th limiting groove limit stops.
Further, cooperation is limited between the upper surface of piston bush and the lower face of the structural member above piston bush,
To prevent piston bush relative to the displacement of structural member generation radial direction.
Further, it is upper flange to be located at the structural member above piston bush.
Further, there is the first extension, the lower face of upper flange to have recess portion for the upper surface of piston bush, and first extends
Portion stretch in recess portion and with recess portion piston bush limit stops in the radial direction.
Further, there is the limiting section extended towards piston bush, limiting section to be limited with piston bush for the lower face of upper flange
Backstop, to prevent piston bush relative to the displacement of upper flange generation radial direction.
Further, limiting section stretch into piston bush and with the inner surface limit stops of piston bush.
Further, the upper surface of piston bush has the first limiting groove, limiting section stretch into the first limiting groove and with
First limiting groove limit stops.
Further, structural member includes upper flange and upper limit plate, and upper limit plate is between upper flange and cylinder, piston
Cooperation is limited between the upper surface and the lower face of upper limit plate of set, to prevent piston bush from radial direction occurs relative to upper flange
Displacement.
Further, there is the first extension, the first extension to stretch into the centre bore of upper limit plate for the upper surface of piston bush
It is interior, and limit and coordinate with the inner surface of the centre bore of upper limit plate.
Further, upper limit plate has the 4th limiting groove towards the surface of piston bush, and the upper surface of piston bush has
First extension, the first extension stretch into the 4th limiting groove and with the 4th limiting groove limit stops.
Further, upper limit plate towards the surface of piston bush there is third extension, third extension to stretch into piston bush
Interior and inner surface limit stops with piston bush.
Further, upper limit plate has a third extension towards the surface of piston bush, and the upper surface of piston bush has the
One limiting groove, third extension stretch into the first limiting groove and with the first limiting groove limit stops.
Further, structural member includes upper flange and upper limit plate, and upper limit plate is between upper flange and cylinder, piston
The upper surface of set has the first extension, the first extension stretch into the centre bore of upper limit plate and with the lower face of upper flange it
Between limit cooperation, with prevent piston bush relative to upper flange occur radial direction displacement.
Further, there is recess portion, the first extension to stretch in recess portion and with recess portion in piston for the lower face of upper flange
The limit stops in the radial direction of set.
Further, the lower face of upper flange has the limiting section extended towards piston bush, limiting section and the first extension
Limit stops, to prevent piston bush relative to the displacement of upper flange generation radial direction.
Further, at least two structural members further include the upper flange being located above piston component, and pump assembly further includes：
Shaft, shaft is threaded through upper flange, piston bush and lower flange successively, and shaft is coaxially disposed with upper flange and lower flange.
According to another aspect of the present invention, a kind of fluid machinery, including above-mentioned pump assembly are provided.
According to another aspect of the present invention, a kind of heat transmission equipment, including above-mentioned fluid machinery are provided.
It applies the technical scheme of the present invention, pump assembly includes at least two structural members, cylinder and piston component.Wherein,
Cylinder is arranged between two structural members.Piston component is arranged in cylinder, and piston component includes piston bush and is slidably arranged in
Piston in piston bush, be located at piston bush lower section structural member upper surface have extension, structural member by extension with
Piston bush carries out limit cooperation, to prevent piston bush relative to the displacement of structural member generation radial direction.In this way, in pump assembly
In operational process, limit stops can be carried out to piston bush by being located at the extension of the structural member below piston bush, and then avoid living
Movement in the radial direction occurs in the process of running for plug sleeve, ensure piston bush can normal rotation, solve in the prior art
The piston bush of pump assembly easily occurs eccentric rotary, influences the problem of pump assembly working efficiency, improves the fortune of pump assembly
Row reliability and working performance.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the dimensional structure diagram of the embodiment one of pump assembly according to the present invention；
Fig. 2 shows the sectional views of the pump assembly in Fig. 1；
Fig. 3 shows the vertical view of the lower flange of the pump assembly in Fig. 1；
Fig. 4 shows the decomposition texture schematic diagram of the embodiment two of pump assembly according to the present invention；
Fig. 5 shows the sectional view of the pump assembly in Fig. 4；
Fig. 6 shows the sectional view of the lower limiting board of the pump assembly in Fig. 4；
Fig. 7 shows the decomposition texture schematic diagram of the embodiment three of pump assembly according to the present invention；
Fig. 8 shows the sectional view of the pump assembly in Fig. 7；
Fig. 9 shows the sectional view of the lower limiting board of the pump assembly in Fig. 7；
Figure 10 shows the sectional view of the piston bush of the pump assembly in Fig. 7；
Figure 11 shows the decomposition texture schematic diagram of the example IV of pump assembly according to the present invention；
Figure 12 shows the sectional view of the pump assembly in Figure 11；
Figure 13 shows the dimensional structure diagram of the upper flange of the pump assembly in Figure 11；
Figure 14 shows the vertical view of the lower flange of the pump assembly in Figure 11；
Figure 15 shows the decomposition texture schematic diagram of the embodiment five of pump assembly according to the present invention；
Figure 16 shows the sectional view of the pump assembly in Figure 15；
Figure 17 shows the dimensional structure diagrams of the upper flange of the pump assembly in Figure 15；
Figure 18 shows the sectional view of the piston bush of the pump assembly in Figure 15；
Figure 19 shows the vertical view of the lower flange of the pump assembly in Figure 15；
Figure 20 shows the decomposition texture schematic diagram of the embodiment six of pump assembly according to the present invention；
Figure 21 shows the sectional view of the pump assembly in Figure 20；
Figure 22 shows the dimensional structure diagram of the upper flange of the pump assembly in Figure 20；
Figure 23 shows the sectional view of the lower limiting board of the pump assembly in Figure 20；
Figure 24 shows the sectional view of the piston bush of the pump assembly in Figure 20；
Figure 25 shows the decomposition texture schematic diagram of the embodiment seven of pump assembly according to the present invention；
Figure 26 shows the sectional view of the pump assembly in Figure 25；
Figure 27 shows the sectional view of the lower limiting board of the pump assembly in Figure 25；
Figure 28 shows the sectional view of the upper limit plate of the pump assembly in Figure 25；
Figure 29 shows the sectional view of the piston bush of the pump assembly in Figure 25；
Figure 30 shows the decomposition texture schematic diagram of the embodiment eight of pump assembly according to the present invention；
Figure 31 shows the sectional view of the pump assembly in Figure 30；
Figure 32 shows the sectional view of the upper limit plate of the pump assembly in Figure 30；
Figure 33 shows the sectional view of the lower limiting board of the pump assembly in Figure 30；
Figure 34 shows the sectional view of the piston bush of the pump assembly in Figure 30；
Figure 35 shows the decomposition texture schematic diagram of the embodiment nine of pump assembly according to the present invention；
Figure 36 shows the sectional view of the pump assembly in Figure 35；
Figure 37 shows the sectional view of the upper limit plate of the pump assembly in Figure 35；
Figure 38 shows the sectional view of the lower limiting board of the pump assembly in Figure 35；
Figure 39 shows the sectional view of the piston bush of the pump assembly in Figure 35；
Figure 40 shows the decomposition texture schematic diagram of the embodiment ten of pump assembly according to the present invention；
Figure 41 shows the sectional view of the pump assembly in Figure 40；
Figure 42 shows the upward view of the upper flange of the pump assembly in Figure 40；
Figure 43 shows the sectional view of the upper flange in Figure 42；
Figure 44 shows the sectional view of the lower limiting board of the pump assembly in Figure 40；And
Figure 45 shows the sectional view of the piston bush of the pump assembly in Figure 40.
Wherein, above-mentioned attached drawing includes the following drawings label：
11, upper flange；111, recess portion；112, limiting section；12, lower flange；13, lower limiting board；14, upper limit plate；141,
4th limiting groove；142, third extension；20, cylinder；30, shaft；40, piston bush；41, the first extension；42, the first limit
Position groove；44, step surface；45, the 6th limiting groove；50, piston；80, extension.
Specific implementation mode
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 present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have and the application
The normally understood identical meanings of person of an ordinary skill in the technical field.
In the present invention, in the absence of explanation to the contrary, the noun of locality used is typically directed to attached drawing as " upper and lower "
Shown in for direction, or on vertical, vertical or gravity direction；Similarly, it for ease of understanding and retouches
It states, " left and right " is typically for shown in the drawings left and right；" inside and outside " refers to the inside and outside of the profile relative to each component itself,
But the above-mentioned noun of locality is not intended to restrict the invention.
Piston bush in order to solve pump assembly in the prior art easily occurs eccentric rotary, influences pump assembly working efficiency
The problem of, this application provides a kind of pump assembly, fluid machinery and heat transmission equipments.
Embodiment one
As depicted in figs. 1 and 2, pump assembly includes two structural members, cylinder 20 and piston component.Wherein, cylinder 20 is set
It sets between two structural members.Piston component is arranged in cylinder 20, and piston component includes piston bush 40 and is slidably arranged in work
Piston 50 in plug sleeve 40, the upper surface for being located at the structural member of the lower section of piston bush 40 have extension 80, and structural member is by prolonging
Extending portion 80 carries out limit cooperation with piston bush 40, to prevent piston bush 40 relative to the displacement of structural member generation radial direction.
Using the technical solution of the present embodiment, in pump assembly operational process, it is located at the structural member of 40 lower section of piston bush
Extension 80 can carry out limit stops to piston bush 40, and then avoid piston bush 40 that radial direction occurs in the process of running
On movement, ensure piston bush 40 can normal rotation, bias easily occurs for the piston bush for solving pump assembly in the prior art
Rotation influences the problem of pump assembly working efficiency, improves the operational reliability and working performance of pump assembly.
As shown in figure 3, structural member includes lower flange 12.Specifically, extension 80 is arranged on the upper surface of lower flange 12,
Limit stops of the lower flange 12 to 40 radial direction of piston bush are realized by the limit cooperation between extension 80 and piston bush 40.
In pump assembly operational process, extension 80 stretch into piston bush 40 and with the inner surface limit stops of piston bush 40, with right
Piston bush 40 carries out the limit stops of radial direction, prevents the lower end of piston bush 40 from radial direction occurs relative to lower flange 12
Displacement avoids piston bush 40 from interfering and influence the normal operation of pump assembly, elevator pump with piston 50 or 20 recurring structure of cylinder
The operational reliability and working performance of body component.
In the present embodiment, extension 80 is eccentric boss, and eccentricity of the eccentric boss on lower flange 12 is e.
As depicted in figs. 1 and 2, pump assembly further includes upper flange 11 and shaft 30.Wherein, upper flange 11 is located at piston group
The top of part.Shaft 30 is threaded through upper flange 11, piston bush 40 and lower flange 12, and shaft 30 and upper flange 11 and laxative remedy successively
Orchid 12 is coaxially disposed.In pump assembly operational process, shaft 30 is rotated around the central axis of upper flange 11, and piston bush 40 is around recessed
The central axis in portion 111 rotates, and piston 50 is only moved back and forth relative to piston bush 40, and piston 50 is back and forth transported relative to shaft 30
Dynamic, two reciprocating motions are mutually perpendicular to, i.e. the operation of pump assembly follows cross slides principle.With piston 50 and piston
Reciprocating motion between set 40, the head cambered surface of piston 50, the inner surface of cylinder 20, piston bush 40 pilot hole between formed
Two cavity volumes gradually change, and complete air-breathing, compression, exhaust process.
Present invention also provides a kind of fluid machinery (not shown), including above-mentioned pump assembly.Optionally, fluid machinery
For compressor.
Present invention also provides a kind of heat transmission equipment (not shown), including above-mentioned fluid machinery.Optionally, heat transmission equipment
For air conditioner.
Embodiment two
Pump assembly in embodiment two and embodiment one difference lies in：The structure of structural member is different.
As shown in Figures 4 to 6, structural member includes lower flange 12 and lower limiting board 13, lower limiting board 13 be located at cylinder 20 with
Between lower flange 12, extension 80 is arranged in the upper surface of lower limiting board 13.Specifically, the extension 80 on lower limiting board 13 is stretched
Enter in piston bush 40 and with the inner surface limit stops of piston bush 40, to carry out the limit stops of radial direction to piston bush 40,
Prevent the lower end of piston bush 40 from the displacement of radial direction occurring relative to lower limiting board 13 and lower flange 12, avoid piston bush 40 with
Piston 50 or the interference of 20 recurring structure of cylinder and influence the normal operation of pump assembly, promoted pump assembly operational reliability and
Working performance.
Optionally, extension 80 is annular protrusion, and the centre bore of annular protrusion and lower limiting board 13 is coaxially disposed.
In the other embodiment being not shown in the accompanying drawings, extension is arranged in the upper surface of lower flange.Specifically, laxative remedy
Extension on orchid carries out limit stops to the lower end of piston bush, to prevent the lower end of piston bush relative to lower flange (lower limit
Plate) occur radial direction displacement.Meanwhile the upper end of piston bush is by upper flange limited support, so that piston bush is upper and lower
Both ends are limited support, and piston bush is avoided to interfere and influence the normal operation of pump assembly with piston or cylinder recurring structure,
Promote the operational reliability and working performance of pump assembly.
Embodiment three
Pump assembly in embodiment three and embodiment two difference lies in：The structure of piston bush 40 and setting for extension 80
Seated position is different.
As shown in Figure 7 to 10, extension 80 is arranged on lower limiting board 13, and the lower face of piston bush 40 has the 6th limit
Position groove 45, extension 80 stretch into the 6th limiting groove 45 and with 45 limit stops of the 6th limiting groove.Specifically, in the pump housing
During assembly operating, lower limiting board 13 is fixedly connected with lower flange 12, and the extension 80 of lower limiting board 13 stretches into piston bush 40
The 6th limiting groove 45 in, and to the 6th limiting groove 45 carry out limit stops, and then realize lower limiting board 13 to piston bush
Limit, the support of 40 lower ends so that the lower end of piston bush 40 avoids piston bush 40 and piston 50 by 13 support limit of lower limiting board
Or the normal operation of pump assembly is interfered and influenced to 20 recurring structure of cylinder, promotes the operational reliability and workability of pump assembly
Energy.
Optionally, extension 80 and the 6th limiting groove 45 are cyclic structure, and in extension 80 and lower limiting board 13
Heart hole is coaxially disposed, extension 80 and the coaxial arrangement of the 6th limiting groove 45.The structure of above structure is simple, easy to implement.
It should be noted that the structure of extension 80 is without being limited thereto.Optionally, extension 80 is formed by multiple arcs section,
And multiple arcs are intersegmental every setting.
Example IV
Pump assembly in example IV and embodiment one difference lies in：The structure of upper flange 11 is different.
As shown in Figure 11 to 14, the lower face of the upper surface of piston bush 40 and the structural member positioned at the top of piston bush 40 it
Between limit cooperation, with prevent piston bush 40 relative to structural member occur radial direction displacement.Wherein, it is located at 40 top of piston bush
Structural member be upper flange 11.Specifically, upper flange 11 can carry out the upper end of piston bush 40 limit stops of radial direction.
Meanwhile lower flange 12 can to the lower end of piston bush 40 carry out radial direction limit stops so that piston bush 40 it is upper,
Lower both ends are limited support, improve operational reliability, the operation stability of pump assembly.
Specifically, there is the first extension 41, the lower face of upper flange 11 to have recess portion 111 for the upper surface of piston bush 40,
First extension 41 stretch in recess portion 111 and with recess portion 111 piston bush 40 limit stops in the radial direction.In this way, living
First extension 41 of plug sleeve 40 stretch into the recess portion 111 of upper flange 11 and with 111 limit stops of recess portion, realize that upper flange 11 is right
The radial limit of piston bush 40.In pump assembly operational process, 41 limit stops of recess portion 111 and the first extension ensure the
One extension 41 is rotated in recess portion 111, without the displacement of the first extension 41 in radial directions occurs, to realize
Limit, support of the upper flange 11 to the upper end of piston bush 40, prevent piston bush 40 from eccentric, tilt rotation occurs, ensure pump housing group
Part normal operation promotes the functional reliability of pump assembly.
In the present embodiment, the first extension 41 and recess portion 111 in a ring, and the first extension 41, recess portion 111 and piston
40 coaxial arrangement of set.In this way, piston bush 40 and 11 eccentric setting of upper flange, and the eccentric amount e that eccentricity is pump assembly.This
Sample, above-mentioned setting enable the first extension 41 of piston bush 40 interior in piston bush 40 in the recess portion 111 of upper flange 11
Mandrel line (or central axis of recess portion 111) rotates, and ensures upper flange 11 to the limit of piston bush 40, support reliability.
It should be noted that the structure of the first extension 41 is without being limited thereto.Optionally, the first extension 41 is double-layer circular
Structure, at least one layer of cyclic structure and the inside cell wall or outside cell wall of recess portion 111 carry out limit stops.In this way, above-mentioned setting
So that the structure more diversity of the first extension 41 drops so that the processing of piston bush 40, manufacture are more prone to, simply
The labor intensity of low staff.
In the other embodiment being not shown in the accompanying drawings, the first extension is multiple boss structures, and multiple boss edges
Piston bush is provided at circumferentially spaced.
In the present embodiment, recess portion 111 is groove.The structure of above structure is simple, is easily worked, realizes.
In the present embodiment, the groove width of groove is more than the thickness of the first extension 41.In this way, above-mentioned setting ensures that first prolongs
Extending portion 41 is located in groove, and then ensures that groove can carry out limit stops to the first extension 41, promotes upper flange 11 to work
The limit reliability of plug sleeve 40, promotes the operational reliability of pump assembly.
In the present embodiment, the surface of the inside cell wall of groove and the first extension 41 close to the center side of piston bush 40
Between have preset distance, and preset distance be more than or equal to 5um and be less than or equal to 40um.Specifically, the inside cell wall pair of groove
First extension 41 carries out limit stops close to the surface of the center side of piston bush 40, prevents that radial move occurs therebetween
Position.Meanwhile in order to ensure piston bush 40 can normal rotation, in the inside cell wall of groove and the first extension 41 close to piston bush
There is preset distance between the surface of 40 center side, both ensured that groove can carry out radial limit to the first extension 41,
Also enable the first extension 41 to be rotated relative to groove, and then promotes the operational reliability of pump assembly.
In the present embodiment, recess portion 111 and 11 eccentric setting of upper flange, and eccentricity is e.In this way, through the above way
Determining the eccentricity of pump assembly so that the eccentricity of pump assembly is more prone to ensure, the determination of eccentric amount e is relatively reliable,
Simply.
Embodiment five
Pump assembly and example IV in embodiment five difference lies in：The structure of upper flange 11 and piston bush 40 is not
Together.
As shown in Figure 15 to Figure 19, the lower face of upper flange 11 has the limiting section 112 extended towards piston bush 40, limit
Portion 112 and 40 limit stops of piston bush, to prevent piston bush 40 relative to the displacement of the generation radial direction of upper flange 11.Specifically
Ground, limiting section 112 stretch into piston bush 40 and with the inner surface limit stops of piston bush 40, have on the inner surface of piston bush 40
Step surface 44, and step surface 44 is located at piston bush 40 towards the end of upper flange 11, limiting section 112 is matched with the limit of step surface 44
It closes, to realize that upper flange 11 limits the radial direction of piston bush 40, prevents piston bush 40 to be displaced in radial directions, in realization
Limit, support of the flange 11 to the upper end of piston bush 40, prevent piston bush 40 from eccentric, tilt rotation occurs, ensure pump assembly
Normal operation promotes the functional reliability of pump assembly.
In the present embodiment, limiting section 112 is cyclic structure and is coaxially disposed with piston bush 40.Wherein, limiting section 112 with
11 eccentric setting of upper flange, and eccentricity is e.In this way, determining the eccentricity of pump assembly through the above way so that pump housing group
The eccentricity of part is more prone to ensure, the determination of eccentric amount e is relatively reliable, simple.
Embodiment six
Pump assembly in embodiment six and embodiment two difference lies in：Structural member, piston bush 40 and upper flange 11
Structure is different.
As shown in Figure 20 to Figure 24, structural member further includes upper flange 11 and upper limit plate 14, and upper limit plate 14 is located at upper method
Between orchid 11 and cylinder 20, cooperation is limited between the upper surface and the lower face of upper limit plate 14 of piston bush 40, to prevent piston
The displacement of radial direction occurs relative to upper flange 11 for set 40.Wherein, there is extension 80, and extension 80 on lower limiting board 13
It stretches in piston bush 40.In this way, in pump assembly operational process, the upper end of piston bush 40 is by the limit of upper limit plate 14, branch
Support, and then prevent piston bush 40 from movement in the radial direction occurring in the process of running, ensure piston bush 40 can normal rotation,
Solve the problems, such as that the piston bush of pump assembly in the prior art easily occurs eccentric rotary, influences pump assembly working efficiency.
Specifically, there is the first extension 41, the first extension 41 to stretch into upper limit plate 14 for the upper surface of piston bush 40
In centre bore, and limits and coordinate with the inner surface of the centre bore of upper limit plate 14.Specifically, in pump assembly operational process,
Upper flange 11 is fixedly connected with upper limit plate 14, and the first extension 41 stretches into the centre bore of upper limit plate 14 and can be with center
The hole wall limit cooperation in hole prevents the upper end of piston bush 40 opposite to carry out the limit of radial direction to the upper end of piston bush 40
The displacement that radial direction occurs with upper flange 11 or upper limit plate 14, avoids piston bush 40 and 20 recurring structure of piston 50 or cylinder
Interfere and influence the normal operation of pump assembly.The structure of above structure is simple, is easily worked, realizes.
In the present embodiment, in a ring, and the first extension 41 is coaxially disposed the first extension 41 with piston bush 40.This
Sample, above-mentioned setting ensures that piston bush 40 can be rotated relative to upper flange 11, and then ensures the reliable for operation of pump assembly
Property.Piston bush 40 and 11 eccentric setting of upper flange, and the eccentric amount e that eccentricity is pump assembly.In this way, above-mentioned setting to live
First extension 41 of plug sleeve 40 can be in the centre bore of upper limit plate 14 on the center axis thereof of piston bush 40, guarantee
Limiting plate 14 is to the limit of piston bush 40, support reliability.
It should be noted that the structure of the first extension 41 is without being limited thereto.Optionally, the first extension 41 is double-layer circular
Structure, outermost cyclic structure and the inner surface of the centre bore of upper limit plate 14 carry out limit stops.In this way, above-mentioned setting makes
The structure more diversity of the first extension 41 is obtained, so that the processing of piston bush 40, manufacture are more prone to, simply, is reduced
The labor intensity of staff.
Optionally, the first extension 41 is bulge loop, and bulge loop is coaxially disposed with piston bush 40.
It should be noted that the structure of the first extension 41 is without being limited thereto.Optionally, the first extension 41 is at least one
Protrusion, when protrusion is multiple, multiple protrusions are coaxially disposed around the circle formed and piston bush 40.
In the present embodiment, the lower face of upper flange 11 has the limiting section 112 extended towards piston bush 40, and limiting section
112 are located at the inside of first extension 41, to carry out limit stops to the first extension 41.Specifically, in pump assembly
In operational process, the first extension 41 of piston bush 40 is by the centre bore of upper limit plate 14 and the radial direction of limiting section 112
Limit, further prevent the upper end of piston bush 40 that the displacement of radial direction occurs relative to upper flange 11.
Embodiment seven
Pump assembly in embodiment seven and embodiment six difference lies in：The structure of upper limit plate 14 and upper flange 11 is not
Together.
As shown in Figure 25 to Figure 29, upper limit plate 14 has the 4th limiting groove 141, piston towards the surface of piston bush 40
There is the first extension 41, the first extension 41 to stretch into the 4th limiting groove 141 and recessed with the 4th limit for the upper surface of set 40
141 limit stops of slot.Specifically, in pump assembly operational process, the first extension 41 stretches into the 4th limit of piston bush 40
In groove 141 and with 141 limit stops of the 4th limiting groove, and then realize upper limit plate 14 to the limit of 40 upper end of piston bush,
Support avoids piston bush 40 from interfering and influence the normal operation of pump assembly with piston 50 or 20 recurring structure of cylinder.Above-mentioned knot
The structure of structure is simple, is easily worked, realizes.
Optionally, the 4th limiting groove 141 is annular groove.Specifically, the centre bore of annular groove and upper limit plate 14 is coaxial
Setting.The structure of above structure is simple, easy to implement.
Embodiment eight
Pump assembly in embodiment eight and embodiment six difference lies in：The structure of upper limit plate 14 and upper flange 11 is not
Together.
As shown in Figure 30 to Figure 34, upper limit plate 14 has third extension 142 towards the surface of piston bush 40, and third is prolonged
Extending portion 142 stretch into piston bush 40 and with the inner surface limit stops of piston bush 40.Specifically, have on the inner surface of piston bush 40
There is step surface 44, and step surface 44 is located at piston bush 40 towards the end of upper flange 11, third extension 142 stretches into piston bush 40
Step surface 44 in 44 limit stops of step surface, to realize limit of the upper flange 11 to 40 radial direction of piston bush.
Optionally, third extension 142 is loop configuration, and loop configuration and the centre bore of upper limit plate 14 are coaxially set
It sets.The structure of above structure is simple, easy to implement.
It should be noted that the structure of third extension 142 is without being limited thereto.Optionally, third extension 142 is by multiple circles
Segmental arc is surrounded and is formed, and multiple arc sections surround the centre bore coaxial arrangement of the circle and upper limit plate 14 formed.
Embodiment nine
Pump assembly in embodiment nine and embodiment six difference lies in：Upper flange 11, upper limit plate 14 and piston bush
40 structure is different.
As schemed shown in .35 to Figure 39, upper limit plate 14 has third extension 142, piston towards the surface of piston bush 40
There is the first limiting groove 42, third extension 142 to stretch into the first limiting groove 42 and be limited with first for the upper surface of set 40
42 limit stops of groove.Specifically, in pump assembly operational process, third extension 142 stretches to the first limiting groove 42
It is interior to be limited, be supported to the first limiting groove 42, to realize upper limit plate 14 to the limit of the upper end of piston bush 40, branch
Support avoids piston bush 40 from interfering and influence the normal operation of pump assembly with piston 50 or 20 recurring structure of cylinder.Above structure
Structure it is simple, be easily worked, realize.
Optionally, third extension 142 is loop configuration, and loop configuration and the centre bore of upper limit plate 14 are coaxially set
It sets.The structure of above structure is simple, easy to implement.
Optionally, the first limiting groove 42 is annular groove, and annular groove is coaxially disposed with piston bush 40.
Embodiment ten
Pump assembly in embodiment ten and embodiment six difference lies in：The structure of structural member is different.
As shown in Figure 40 to Figure 45, structural member includes upper flange 11 and upper limit plate 14, and upper limit plate 14 is located at upper flange
Between 11 and cylinder 20, there is the first extension 41, the first extension 41 to stretch into upper limit plate 14 for the upper surface of piston bush 40
Cooperation is limited in centre bore and between the lower face of upper flange 11, to prevent piston bush 40 from radial direction occurs relative to upper flange 11
The displacement in direction.Specifically, in pump assembly operational process, the first extension 41 of piston bush 40 stretches into upper limit plate 14
It limiting in centre bore and with the lower face of upper flange 11 and coordinates, upper flange 11 plays the role of limit, support to piston bush 40, into
And prevent piston bush 40 from movement in the radial direction occurring in the process of running, ensure piston bush 40 can normal rotation, solve
The piston bush of pump assembly easily occurs eccentric rotary, influences the problem of pump assembly working efficiency in the prior art.
As shown in figure 43, the lower face of upper flange 11 has a recess portion 111, the first extension 41 stretch into recess portion 111 and with
111 limit stops of recess portion, to prevent piston bush 40 relative to the displacement of the generation radial direction of upper flange 11.It is run in pump assembly
In the process, the outer surface of the first extension 41 and the internal face of recess portion 111 can carry out limit cooperation, prevent from occurring therebetween
Radial displacement, and then prevent piston bush 40 from the displacement of radial direction occurring relative to upper flange 11, ensure the stabilization of piston bush 40
Operation, promotes the operational reliability and working efficiency of pump assembly.
Optionally, recess portion 111 is annular groove.
Optionally, the eccentric setting on upper flange 11 of recess portion 111, and eccentricity is e.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
In pump assembly operational process, the extension of the structural member below piston bush can limit piston bush
Position backstop, and then avoid piston bush that movement in the radial direction occurs in the process of running, ensure piston bush can normal rotation,
It solves the problems, such as that the piston bush of pump assembly in the prior art easily occurs eccentric rotary, influences pump assembly working efficiency, carries
The operational reliability and working performance of pump assembly are risen.
Obviously, above-mentioned described embodiment only a part of the embodiments of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiment should all belong to the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific implementation mode, 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 singulative
It is also 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, work, device, component and/or combination thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (22)
1. a kind of pump assembly, which is characterized in that including：
At least two structural members；
Cylinder (20) is arranged between two structural members；
Piston component, in the cylinder (20), the piston component includes piston bush (40) and is slidably arranged in described for setting
Piston (50) in piston bush (40), the upper surface for being located at the structural member of the lower section of the piston bush (40) have extension
(80), the structural member carries out limit cooperation by the extension (80) and the piston bush (40), to prevent the piston
Cover the displacement that radial direction occurs relative to the structural member for (40).
2. pump assembly according to claim 1, which is characterized in that the structural member includes lower flange (12).
3. pump assembly according to claim 1, which is characterized in that the structural member includes lower flange (12) and lower limit
Plate (13), between the cylinder (20) and the lower flange (12), the extension (80) sets the lower limiting board (13)
Set the upper surface in the lower limiting board (13) or the lower flange (12).
4. pump assembly according to claim 2, which is characterized in that the extension (80) stretches into the piston bush (40)
It is interior and with the inner surface limit stops of the piston bush (40).
5. pump assembly according to claim 1, which is characterized in that the lower face of the piston bush (40) has the 6th limit
Position groove (45), the extension (80) are stretched into the 6th limiting groove (45) and are limited with the 6th limiting groove (45)
Position backstop.
6. pump assembly according to any one of claim 1 to 5, which is characterized in that the upper end of the piston bush (40)
It limits and coordinates between face and the lower face of the structural member above the piston bush (40), to prevent the piston bush
(40) displacement of radial direction occurs relative to the structural member.
7. pump assembly according to claim 6, which is characterized in that the structure being located above the piston bush (40)
Part is upper flange (11).
8. pump assembly according to claim 7, which is characterized in that the upper surface of the piston bush (40) has first to prolong
There is recess portion (111), first extension (41) to stretch to the recess portion for the lower face of extending portion (41), the upper flange (11)
(111) in and with the recess portion (111) the piston bush (40) limit stops in the radial direction.
9. pump assembly according to claim 7, which is characterized in that the lower face of the upper flange (11) has towards institute
The limiting section (112) of piston bush (40) extension, the limiting section (112) and the piston bush (40) limit stops are stated, to prevent
The displacement of radial direction occurs relative to the upper flange (11) for the piston bush (40).
10. pump assembly according to claim 9, which is characterized in that the limiting section (112) stretches into the piston bush
(40) in and with the inner surface limit stops of the piston bush (40).
11. pump assembly according to claim 9, which is characterized in that the upper surface of the piston bush (40) has first
Limiting groove (42), the limiting section (112) stretch into first limiting groove (42) and with first limiting groove
(42) limit stops.
12. pump assembly according to any one of claim 1 to 5, which is characterized in that the structural member includes upper flange
(11) and upper limit plate (14), the upper limit plate (14) are described between the upper flange (11) and the cylinder (20)
Cooperation is limited between the upper surface of piston bush (40) and the lower face of the upper limit plate (14), to prevent the piston bush (40)
The displacement of radial direction occurs relative to the upper flange (11).
13. pump assembly according to claim 12, which is characterized in that the upper surface of the piston bush (40) has first
Extension (41), first extension (41) are stretched into the centre bore of the upper limit plate (14), and with the upper limit plate
(14) the inner surface limit cooperation of centre bore.
14. pump assembly according to claim 12, which is characterized in that the upper limit plate (14) is towards the piston bush
(40) surface has the 4th limiting groove (141), and the upper surface of the piston bush (40) has the first extension (41), described
First extension (41) stretch into the 4th limiting groove (141) and with the 4th limiting groove (141) limit stops.
15. pump assembly according to claim 12, which is characterized in that the upper limit plate (14) is towards the piston bush
(40) surface has a third extension (142), the third extension (142) stretch into the piston bush (40) and with it is described
The inner surface limit stops of piston bush (40).
16. pump assembly according to claim 12, which is characterized in that the upper limit plate (14) is towards the piston bush
(40) surface has third extension (142), and the upper surface of the piston bush (40) has the first limiting groove (42), described
Third extension (142) stretch into first limiting groove (42) and with the first limiting groove (42) limit stops.
17. pump assembly according to any one of claim 1 to 5, which is characterized in that the structural member includes upper flange
(11) and upper limit plate (14), the upper limit plate (14) are described between the upper flange (11) and the cylinder (20)
There is the first extension (41), first extension (41) to stretch into the upper limit plate (14) for the upper surface of piston bush (40)
Cooperation is limited in centre bore and between the lower face of the upper flange (11), to prevent the piston bush (40) relative to described
The displacement of radial direction occurs for upper flange (11).
18. pump assembly according to claim 17, which is characterized in that the lower face of the upper flange (11) has recess portion
(111), first extension (41) stretches in the recess portion (111) and with the recess portion (111) in the piston bush
(40) limit stops in the radial direction.
19. pump assembly according to claim 17, which is characterized in that the lower face of the upper flange (11) has direction
The limiting section (112) that the piston bush (40) extends, the limiting section (112) and the first extension (41) limit stops,
To prevent the piston bush (40) relative to the displacement of the upper flange (11) generation radial direction.
20. pump assembly according to claim 2, which is characterized in that at least two structural members further include being located at institute
The upper flange (11) above piston component is stated, the pump assembly further includes：
Shaft (30), the shaft (30) are threaded through the upper flange (11), the piston bush (40) and the lower flange successively
(12), and the shaft (30) is coaxially disposed with the upper flange (11) and the lower flange (12).
21. a kind of fluid machinery, which is characterized in that including the pump assembly described in any one of claim 1 to 20.
22. a kind of heat transmission equipment, which is characterized in that including the fluid machinery described in claim 21.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810793005.2A CN108799109B (en) | 2018-07-18 | 2018-07-18 | Pump body assembly, fluid machinery and heat exchange equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810793005.2A CN108799109B (en) | 2018-07-18 | 2018-07-18 | Pump body assembly, fluid machinery and heat exchange equipment |
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| CN108799109B CN108799109B (en) | 2024-04-02 |
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| CN109555693A (en) * | 2018-12-18 | 2019-04-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston limit structure, compressor and heat exchange equipment |
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| CN108799109B (en) | 2024-04-02 |
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