CN208966587U - Pump assembly, positive displacement compressor, air handling system - Google Patents
Pump assembly, positive displacement compressor, air handling system Download PDFInfo
- Publication number
- CN208966587U CN208966587U CN201821760463.8U CN201821760463U CN208966587U CN 208966587 U CN208966587 U CN 208966587U CN 201821760463 U CN201821760463 U CN 201821760463U CN 208966587 U CN208966587 U CN 208966587U
- Authority
- CN
- China
- Prior art keywords
- slide plate
- pump assembly
- roller
- compression unit
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of pump assembly, positive displacement compressor, air handling system.The pump assembly includes the first compression unit, second compression unit, partition, first compression unit and the second compression unit pass through shaft closed assembly in one and common partition, first compression unit includes the first cylinder, first roller, first slide plate, first bearing, first roller bias is installed in shaft and and formation first working chamber interior in the first cylinder, first slide plate is plugged in the first sliding vane groove, and first the head end of slide plate abutted with the first roller the first working chamber be divided into suction chamber and discharge chamber, first sliding vane groove has the strength driving chamber of the first slide plate, and strength driving chamber includes tail end receiving portion, dilatation portion, dilatation portion and tail end receiving portion penetrate through.A kind of pump assembly according to the present utility model, positive displacement compressor, air handling system can be greatly reduced sliding vane groove sealing cavity pressure pulsation, reduce the contact force between slide plate and roller, and then reduce operation noise, improve reliability.
Description
Technical field
The utility model belongs to compressor manufacturing technical field, and in particular to a kind of pump assembly, positive displacement compressor, air
Regulating system.
Background technique
It is most of all to apply frequency conversion compression in order to be exported according to the demand adjustment capability of load in air handling system
Machine, compressor can be by the adjustings of compressor frequency come adjustment capability output.And air handling system load it is too small when, need
The operating frequency of compressor is constantly reduced, however due to the limitation of compressor minimum operating frequency, what compressor can be output
Minimum cooling capacity is restricted.Therefore when system loading, which is less than compressor low-limit frequency, runs the minimum ability that can be output, pressure
Contracting chance frequently occurs startup-shutdown, causes compressor wasted work big, while when compressor frequency is too low, compressor volumetric efficiency and electricity
Engine efficiency is low, causes compressor low-frequency operation efficiency low.Therefore have at present and asked by using the mode of frequency conversion transfiguration to solve this
Topic, i.e. compressor use double-cylinder structure (or even multi-cylinder), control compressor in single cylinder operation and twin-tub by increasing switching construction
Switch between operational mode, twin-tub when big load, single cylinder when Smaller load, such positive displacement compressor is needed when realizing transfiguration
The sliding vane groove of transfiguration cylinder is sealed, controls the movement of slide plate will pass through to high pressure or low pressure is introduced in sliding vane groove.And it is practical
It is found in, the sliding vane groove volume after sealing is too small, when slide plate high speed reciprocating motion in sliding vane groove, in sliding vane groove seal chamber
Pressure can generate very big pulsation so that the pressure of slide plate tail portion is excessive or too small, influence the reliability of slide plate.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of pump assembly, positive displacement compressor, air tune
Section system can be greatly reduced sliding vane groove sealing cavity pressure pulsation, reduce the contact force between slide plate and roller, and then reduce
Noise is run, reliability is improved.
To solve the above-mentioned problems, the utility model provides a kind of pump assembly, including the first compression unit, the second compression
Portion, partition, first compression unit and second compression unit in one and share the partition by shaft closed assembly, and described the
One compression unit includes the first cylinder, the first roller, the first slide plate, first bearing, and the first roller bias is installed in described turn
On axis and in first cylinder, first roller periphery, the first cylinder inner wall, first bearing and partition are collectively formed
First working chamber, first slide plate are plugged in the first sliding vane groove that first cylinder has, and first slide plate
Head end is abutted with the periphery wall of first roller first working chamber is divided into suction chamber and discharge chamber, and described first
Sliding vane groove has the strength driving chamber of first slide plate, and the strength driving chamber includes tail end receiving portion, dilatation portion, described
Dilatation portion and the tail end receiving portion penetrate through.
Preferably, the dilatation cage structure is on first cylinder, and/or, the dilatation cage structure is in the partition
On.
Preferably, when the dilatation cage structure is when on first cylinder, the dilatation portion is with the type structure of counterbore
In on the axial end face of first cylinder.
Preferably, connection may be selected in the dilatation portion and external control pressure source.
Preferably, the external control pressure source is the refrigerant in air handling system.
Preferably, the volume of the strength driving chamber is V, and the axial height of first cylinder is H, first slide plate
With a thickness of B, the shaft is E relative to the eccentricity of first working chamber, and first slide plate is relative to described first
It is V0=2 × E × H × B, V/V0 >=2 that roller, which moves back and forth the maximum volume changing value generated,.
Preferably, the pump assembly further includes slide plate locking member, and the slide plate locking member is for locking described the
The relative position of one slide plate and first roller.
Preferably, the slide plate locking member includes pin, spring, described when needing first compression unit unloading
Pin can make first slide plate and described the under the action of the spring in the correspondence card slot of first slide plate
One roller keeps spacing.
The utility model also provides a kind of positive displacement compressor, including above-mentioned pump assembly.
The utility model also provides a kind of air handling system, including above-mentioned positive displacement compressor.
A kind of pump assembly provided by the utility model, positive displacement compressor, air handling system, strength driving chamber therein
Volume including tail end receiving portion and the strength driving chamber being attached thereto in the logical dilatation portion penetrated through namely the technical solution is extremely
Few respective cavities than in the prior art increase the volume in dilatation portion, namely the strength driving chamber bigger using volume, by
In the increase of volume, when the first slide plate high speed reciprocating motion, the pressure fluctuation that tail end is born will be more gentle, namely
In the strength driving chamber pressure fluid be applied to the power on first slide plate (tail end) will be more gentle, and then make described the
One slide plate also tends towards stability and will be remarkably decreased in terms of contact force with first roller, this, which is significantly facilitated, reduces the pump
The operation noise of body component or even compressor improves component reliability of operation.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the pump assembly of the utility model embodiment；
Fig. 2 is the structural schematic diagram at the visual angle A-A in Fig. 1；
Fig. 3 is a kind of dimensional decomposition structure diagram of first compression unit of embodiment in Fig. 1；
Fig. 4 is the dimensional decomposition structure diagram of the first compression unit of another embodiment in Fig. 1；
Fig. 5 is the relational graph of V/V0 and pressure fluctuation of the positive displacement compressor of the utility model embodiment in utilization；
Fig. 6 is the schematic illustration of the air handling system of the utility model embodiment.
Appended drawing reference indicates are as follows:
1, the first compression unit；11, the first cylinder；111, the first sliding vane groove；112, tail end receiving portion；113, dilatation portion；
12, the first roller；13, the first slide plate；14, first bearing；2, the second compression unit；21, the second cylinder；22, the second roller；23,
Second slide plate；24, second bearing；3, partition；4, shaft；5, slide plate locking member；51, pin；52, spring；6, external control
Pressure source；100, First Heat Exchanger；101, restricting element；102, the second heat exchanger；103, gas-liquid separator；104, the first flow direction
Control valve；105, the second flow direction control valve.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to Fig. 6, embodiment according to the present utility model provides a kind of pump assembly, including first
Compression unit 1, the second compression unit 2, partition 3, first compression unit 1 is with second compression unit 2 by 4 closed assembly of shaft in one
And the partition 3 is shared, first compression unit 1 includes the first cylinder 11, the first roller 12, the first slide plate 13, first bearing
14,12 bias of the first roller is installed in the shaft 4 and in first cylinder 11, outside first roller 12
The first working chamber is collectively formed in week, 11 inner wall of the first cylinder, first bearing 14 and partition 3, as a same reason, second compression
Portion 2 includes the second cylinder 21, the second roller 22, the second slide plate 23, second bearing 24, and 22 bias of the second roller is installed in institute
It states in shaft 4 and in second cylinder 21,22 periphery of the second roller, 21 inner wall of the second cylinder, second bearing 24
And the second working chamber is collectively formed in partition 3, first slide plate 13 is plugged in the first sliding vane groove that first cylinder 11 has
In 111, and the head end of first slide plate 13 is abutted with the periphery wall of first roller 12 to divide first working chamber
It is divided into suction chamber and discharge chamber, first sliding vane groove 111 has the strength driving chamber of first slide plate 13, and the strength
Driving chamber includes tail end receiving portion 112, dilatation portion 113, and the dilatation portion 113 is penetrated through with the tail end receiving portion 112, Ke Yili
Solution, the strength driving chamber are used to carry out the relative position relative to first roller 12 of first slide plate 13
Control to realize the unloading to first compression unit, namely realizes the transfiguration function of the pump assembly.The technical solution
In strength driving chamber include in tail end receiving portion 112 and the dilatation portion for being attached thereto logical perforation namely the technical solution
The respective cavities of the volume of strength driving chamber at least than in the prior art increase the volume in dilatation portion, namely use volume more
Big strength driving chamber, due to the increase of volume, when 13 high speed reciprocating motion of the first slide plate, the pressure of tail end receiving
Pulsation will more gently namely in the strength driving chamber pressure fluid be applied to the general of the power on first slide plate 13 (tail end)
It is more gentle, so make first slide plate 13 and first roller 12 also tend towards stability in terms of the contact force and will it is significant under
Drop, this significantly facilitates the operation noise for reducing the pump assembly or even compressor, improves component reliability of operation.
Optionally, the dilatation portion 113 is configured on first cylinder 11, and/or, the dilatation portion 113 is configured in
On the partition 3, specifically, the dilatation portion 113 is when the dilatation portion 113 is configured on first cylinder 11 with heavy
The type structure in hole is on the axial end face of the first cylinder 11 or dilatation portion 113 with the type structure of counterbore in institute
On the corresponding position for stating the first cylinder 11；When the dilatation portion 113 is configured on the partition 3, the dilatation portion 113 is best
It is to be formed with the type structure of counterbore, is conducive to the sealing to the dilatation portion 113 in this way.It is controlled with external in the dilatation portion 113
Pressing pressure source 6 carries out that connection may be selected, will be in outside control pressure source 6 for example, by using usual connecting line or jointing
Pressure fluid be introduced into the dilatation portion 113, and then penetrate through into the tail end receiving portion 112, it is described external to control pressure
Source 6 can be separately provided independently of the pump assembly, best, when the pump assembly is applied in air handling system
When, the external control pressure source 6 is realized using the refrigerant in the air handling system, so as to make entire air
The control globality of regulating system is stronger, and structure design is more rationally compact.
Preferably, the volume of the strength driving chamber is V, and the volume of the tail end receiving portion 112 is V1, the dilatation portion
113 volume is V2, V=V1+V2, and the axial height of first cylinder 11 is H, first slide plate 13 with a thickness of B, institute
It is E that shaft 4, which is stated, relative to the eccentricity of first working chamber, and first slide plate 13 is reciprocal relative to first roller 12
Movement generate maximum volume changing value be V0=2 × E × H × B, V/V0 >=2, as described in Figure 5, as V/V0 < 2,
Its pressure fluctuation to slow down effect very poor, and as the V/V0 >=2, pressure fluctuation slows down effect with V/V0 ratio
Increase and improves.
In order to guarantee the pump assembly in transfiguration (namely first compression unit does not compress, i.e. Unloading Condition) operating condition
Under, the reliability of 13 relative position of the first slide plate, it is preferable that the pump assembly further includes slide plate locking member 5,
The slide plate locking member 5 is used to lock the relative position of first slide plate 13 and first roller 12, as the cunning
A kind of specific embodiment of piece locking member 5, it is preferable that the slide plate locking member 5 includes pin 51, spring 52, when need
When first compression unit 1 being wanted to unload, the pin 51 can be embedded in first slide plate 13 under the action of spring 52
Correspondence card slot in so that first slide plate 13 is kept spacing with first roller 12, the pin 51, spring 52 for example may be used
It is simple using 5 structure of slide plate locking member of this kind of mode, convenient for dimension to be placed in the pin hole that the first bearing 14 has
Shield.
Embodiment according to the present utility model also provides a kind of positive displacement compressor, including above-mentioned pump assembly, due to adopting
With above-mentioned pump assembly, sliding vane groove sealing cavity pressure pulsation can be greatly reduced, reduce connecing between slide plate and roller
Touch thereby reduces the operation noise of compressor, improves its operational reliability.
Embodiment according to the present utility model also provides a kind of air handling system, including above-mentioned positive displacement compressor, by
In using above-mentioned compressor, sliding vane groove sealing cavity pressure pulsation can be greatly reduced, reduce between slide plate and roller
Contact force thereby reduces the operation noise of system, improves its operational reliability.
Specifically, the air handling system further include First Heat Exchanger 100, restricting element 101, the second heat exchanger 102,
Gas-liquid separator 103, the compressor, First Heat Exchanger 100, restricting element 101, the second heat exchanger 102, gas-liquid separator
103 piping connections form refrigerant circulation, it is to be understood that the gas-liquid separator 103 will be in the air-breathing of the compressor
Side namely refrigerant pressure therein will be significantly lower than the refrigerant pressure of the exhaust side of the compressor, the gas-liquid separation
There is device 103 air inlet pipe c, the first escape pipe a, the second escape pipe b, the first escape pipe a and second compression unit to penetrate through
Connection, the second escape pipe b and first compression unit perforation connect, and the company of perforation may be selected in the first flow direction control valve 104
It is connected between the air inlet pipe c and the dilatation portion 113, what the second flow direction control valve 105 may be selected to penetrate through is connected to the pressure
Between the exhaust pipe d that contracting machine has and the dilatation portion 113.Further, the second escape pipe b and the first bearing 14
The pin hole perforation having, to force in the pin 51 when needing to lock 13 relative position of the first slide plate, enables
It is inserted into the card slot that first slide plate 13 has.Certainly, the first flow direction control valve 104 above-mentioned, the second flow direction control valve 105
Such as general solenoid directional control valve can be used.
Specifically, needing first slide plate 13 and first roller 12 at this time when first compression unit unloading
Separation namely first slide plate 13 are locked by the slide plate locking member 5, at this point, first flow direction control valve 104 is connected
(cut-off of the second flow direction control valve 105) is low pressure refrigerant in the dilatation portion 113 and tail end receiving portion 112, and in the pin hole
It is also simultaneously low pressure refrigerant, and almost the same with the refrigerant pressure of the gas-liquid separator 103, at this point, first slide plate 13
In the position far from first roller 12, the pin 51 uplink and will be inserted into described the under the action of spring 52
In the card slot of one slide plate 13, to realize positioning and the unloading of the first compression unit.
When first compressing section compresses, first slide plate 13 is needed to contact with first roller 12 at this time,
I.e. described first slide plate 13 can be moved back and forth freely, at this point, (the first flow direction control valve is connected in second flow direction control valve 105
104 cut-offs), it is high pressure refrigerant in the dilatation portion 113 and tail end receiving portion 112, and in the pin hole it is low pressure refrigerant, this
When, the pin 51 will retract in the pin hole under the action of overcoming the spring 52 under the action of upper and lower pressure difference, thus real
The now compression of positioning and the first compression unit.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (10)
1. a kind of pump assembly, which is characterized in that including the first compression unit (1), the second compression unit (2), partition (3), described
One compression unit (1) and second compression unit (2) in one and are shared the partition (3), described first by shaft (4) closed assembly
Compression unit (1) includes the first cylinder (11), the first roller (12), the first slide plate (13), first bearing (14), first roller
(12) bias is installed on the shaft (4) and in first cylinder (11), the first roller (12) periphery, first
The first working chamber is collectively formed in cylinder (11) inner wall, first bearing (14) and partition (3), and first slide plate (13) is plugged in institute
It states in the first sliding vane groove (111) that the first cylinder (11) has, and the head end of first slide plate (13) and first roller
(12) periphery wall is abutted so that first working chamber is divided into suction chamber and discharge chamber, the first sliding vane groove (111) tool
There is the strength driving chamber of first slide plate (13), and the strength driving chamber includes tail end receiving portion (112), dilatation portion
(113), the dilatation portion (113) and the tail end receiving portion (112) penetrate through.
2. pump assembly according to claim 1, which is characterized in that the dilatation portion (113) is configured in first gas
On cylinder (11), and/or, the dilatation portion (113) is configured on the partition (3).
3. pump assembly according to claim 2, which is characterized in that when the dilatation portion (113) is configured in described first
When on cylinder (11), the dilatation portion (113) is with the type structure of counterbore on the axial end face of first cylinder (11).
4. pump assembly according to claim 1, which is characterized in that the dilatation portion (113) and external control pressure source
(6) connection may be selected.
5. pump assembly according to claim 4, which is characterized in that external control pressure source (6) is air conditioning
Refrigerant in system.
6. pump assembly according to claim 1, which is characterized in that the volume of the strength driving chamber be V, described first
The axial height of cylinder (11) is H, first slide plate (13) with a thickness of B, the shaft (4) is relative to first work
The eccentricity of chamber is E, and first slide plate (13) moves back and forth the maximum volume generated relative to first roller (12) and becomes
Change value is V0=2 × E × H × B, V/V0 >=2.
7. pump assembly according to claim 1, which is characterized in that further include slide plate locking member (5), the slide lock
Component (5) are determined for locking the relative position of first slide plate (13) Yu first roller (12).
8. pump assembly according to claim 7, which is characterized in that the slide plate locking member (5) include pin (51),
Spring (52), when needing first compression unit (1) unloading, the pin (51) can be under the action of the spring (52)
First slide plate (13) and first roller (12) is set to keep spacing in the correspondence card slot of first slide plate (13).
9. a kind of positive displacement compressor, including pump assembly, which is characterized in that the pump assembly is any in claim 1 to 8
Pump assembly described in.
10. a kind of air handling system, including positive displacement compressor, which is characterized in that the positive displacement compressor is claim 9 institute
The compressor stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821760463.8U CN208966587U (en) | 2018-10-29 | 2018-10-29 | Pump assembly, positive displacement compressor, air handling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821760463.8U CN208966587U (en) | 2018-10-29 | 2018-10-29 | Pump assembly, positive displacement compressor, air handling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208966587U true CN208966587U (en) | 2019-06-11 |
Family
ID=66760762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821760463.8U Active CN208966587U (en) | 2018-10-29 | 2018-10-29 | Pump assembly, positive displacement compressor, air handling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208966587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113994A (en) * | 2018-10-29 | 2019-01-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly, positive displacement compressor, air handling system |
-
2018
- 2018-10-29 CN CN201821760463.8U patent/CN208966587U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113994A (en) * | 2018-10-29 | 2019-01-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly, positive displacement compressor, air handling system |
| WO2020088152A1 (en) * | 2018-10-29 | 2020-05-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body component, variable-capacity compressor and air regulation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109113994A (en) | Pump assembly, positive displacement compressor, air handling system | |
| EP3812591B1 (en) | Slide valve, slide valve adjustment mechanism and screw compressor | |
| US4072210A (en) | Compressor | |
| EP3392507B1 (en) | Variable-capacity cylinder with sliding vane control structure and variable-capacity compressor | |
| CN108343607B (en) | Compression mechanism and compressor with same | |
| US4611976A (en) | Capacity and internal compression control device in a screw compressor | |
| CN110094319B (en) | Multi-cascade double-cylinder linear compressor | |
| CN103573625A (en) | Volume variable rotation compressor | |
| KR100619767B1 (en) | Apparatus for changing capacity multi-stage rotary compressor | |
| CN202707496U (en) | Variable-capacity rotary compressor | |
| CN208966587U (en) | Pump assembly, positive displacement compressor, air handling system | |
| CN105443384A (en) | Compressor, control method thereof and air conditioner | |
| EP3228868B1 (en) | Low-backpressure rotary compressor | |
| CN109209879B (en) | Closed rotor compressor | |
| CN109058107B (en) | Sealed rotary compressor and control method thereof | |
| CN110805554A (en) | Pump body assembly and rotary compressor with same | |
| CN111075721B (en) | Pump body subassembly and variable volume compressor | |
| CN108386354B (en) | High-temperature heat pump compressor with double-pump-body structure | |
| CN103557157A (en) | Variable-capacity compressor and air-conditioning system | |
| CN208778229U (en) | A kind of hermetic rotary compressor | |
| CN110805553A (en) | Pump body assembly and rotary compressor with same | |
| CN220378486U (en) | Scroll compressor having a rotor with a rotor shaft having a rotor shaft with a | |
| CN111287968B (en) | Compressor and refrigeration equipment | |
| CN218509720U (en) | Compression ratio adjusting structure of screw compressor and screw compressor | |
| CN214944960U (en) | Compressor pump body and compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |