CN105756895A - Capacity-variable compressor assembly and refrigerating device provided with capacity-variable compressor assembly - Google Patents
Capacity-variable compressor assembly and refrigerating device provided with capacity-variable compressor assembly Download PDFInfo
- Publication number
- CN105756895A CN105756895A CN201610122290.6A CN201610122290A CN105756895A CN 105756895 A CN105756895 A CN 105756895A CN 201610122290 A CN201610122290 A CN 201610122290A CN 105756895 A CN105756895 A CN 105756895A
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- CN
- China
- Prior art keywords
- capacity
- electric capacity
- compressor assembly
- electric wire
- positive displacement
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
Abstract
The invention discloses a capacity-variable compressor assembly and a refrigerating device provided with the capacity-variable compressor assembly. The capacity-variable compressor assembly comprises a power supply, a compression mechanism, a constant-speed motor, a first capacitor and a second capacitor, wherein the power supply is provided with a null wire and a live wire; the compression mechanism comprises a first air cylinder and a second air cylinder; one of the first air cylinder and the second air cylinder is a capacity-variable air cylinder; the constant-speed motor is provided with an operation end electric wire, a starting end electric wire and a public end electric wire; the public end electric wire is connected with the live wire; the first capacitor and the second capacitor are connected between the operation end electric wire and the starting end electric wire in parallel; the operation end electric wire is connected with the null wire; and when the compression mechanism is operated, at least one of the first capacitor and the second capacitor works. According to the capacity-variable compressor assembly disclosed by the invention, the first capacitor and the second capacitor are arranged, so that the torque force of operation is large enough when the capacity-variable air cylinder works and the efficiency of the constant-speed motor is high; and the efficiency of the constant-speed motor is not influenced when the capacity-variable air cylinder is unloaded.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of positive displacement compressor assembly and there is its refrigerating plant.
Background technology
In correlation technique, the refrigerating plant adopting twin-tub transfiguration constant speed compressor at present all adopts same electric capacity when single cylinder operating and twin-tub operating, but, so can bring as ensureing that the torsion that twin-tub operates is sufficiently large, electric efficiency is high and can only select bigger electric capacity, thus causing the problem that when single cylinder operates, electric efficiency sharply declines.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art.For this, it is an object of the present invention to propose a kind of positive displacement compressor assembly, the constant-seed motor efficiency of described positive displacement compressor assembly is high.
Further object is that a kind of refrigerating plant with above-mentioned positive displacement compressor assembly of proposition.
The positive displacement compressor assembly of embodiment according to a first aspect of the present invention, including: power supply, described power supply has zero line and live wire；Compression mechanism, described compression mechanism includes the first cylinder and the second cylinder, and one of them in described first cylinder and the second cylinder is transfiguration cylinder；Constant-seed motor, described constant-seed motor has operation end electric wire, start end electric wire and common port electric wire, and described common port electric wire is connected with described live wire；And first electric capacity and the second electric capacity, described first electric capacity and described second Capacitance parallel connection are between described operation end electric wire and described start end electric wire, and described operation end electric wire is connected with described zero line, the first electric capacity described in when described compression mechanism runs and at least one work in described second electric capacity.
Positive displacement compressor assembly according to embodiments of the present invention, by arranging the first above-mentioned electric capacity and the second electric capacity, being possible not only to ensure that the torsion of operating is sufficiently large when transfiguration cylinder operation, constant-seed motor efficiency is high, and when transfiguration cylinder unloads without influence on the efficiency of constant-seed motor.
According to one embodiment of present invention, the first electric capacity and described second electric capacity described in when described transfiguration cylinder runs all work or only described first electric capacity work, the only described second electric capacity work when described transfiguration cylinder unloads.
Alternatively, it is provided with the first switch with the branch road of described first capacitances in series.
Further, it is provided with second switch with the branch road of described second capacitances in series.
According to one embodiment of present invention, the capacity of the capacity of described first electric capacity and described second electric capacity is not etc..
Alternatively, the capacity of described first electric capacity is more than the capacity of described second electric capacity.
According to one embodiment of present invention, the capacity of described first electric capacity is equal with the capacity of described second electric capacity.
The refrigerating plant of embodiment according to a second aspect of the present invention, including the positive displacement compressor assembly according to the above-mentioned first aspect embodiment of the present invention.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the schematic diagram of positive displacement compressor assembly according to embodiments of the present invention；
Fig. 2 is another schematic diagram of positive displacement compressor assembly according to embodiments of the present invention；
Fig. 3 is the schematic diagram of refrigerating plant according to embodiments of the present invention.
Accompanying drawing labelling:
100: positive displacement compressor assembly；
1: power supply；O: zero line；L: live wire；
21: transfiguration cylinder；
3: constant-seed motor；R: run end electric wire；S: start end electric wire；C: common port electric wire；
4: the first electric capacity；41: the first Wiring ports；42: the second Wiring ports；
5: the second electric capacity；51: the three Wiring ports；52: the four Wiring ports；
61: the first electric wires；62: the second electric wires；63: the three electric wires；
71: the first switches；72: second switch；
101: air entry；102: air vent；
200: refrigerating plant；
201: First Heat Exchanger；202: the second heat exchangers；203: throttling arrangement；
204: control valve；2041: the first valve ports；2042: the second valve ports；
2043: the three valve ports；2044: the four valve ports.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", it is based on orientation shown in the drawings or position relationship in the orientation indicated or position relationship, it is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second ", " the 3rd ", " the 4th " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", " second ", " the 3rd ", " the 4th " feature can express or implicitly include one or more these features.In describing the invention, except as otherwise noted, " multiple " are meant that two or more.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention.
Below with reference to Fig. 1 and Fig. 2, positive displacement compressor assembly 100 according to embodiments of the present invention is described.
As depicted in figs. 1 and 2, the positive displacement compressor assembly 100 of embodiment according to a first aspect of the present invention, including power supply 1 and positive displacement compressor.Power supply 1 can be located at outside positive displacement compressor.Power supply 1 has zero line O and live wire L.
Positive displacement compressor includes compression mechanism, constant-seed motor the 3, first electric capacity 4 and the second electric capacity 5.Compression mechanism includes transfiguration cylinder 21.When positive displacement compressor works, transfiguration cylinder 21 can control to start or unloading as required, and namely transfiguration cylinder 21 can work, it is also possible to do not work (i.e. unloading), and its specific works situation specifically can be arranged according to actual requirement.
Wherein, positive displacement compressor is multicylinder compressor such as duplex cylinder compressor.In the application as explained below, illustrate for positive displacement compressor for duplex cylinder compressor.Certainly, it will be understood by those skilled in the art that positive displacement compressor can also be three cylinder compressors etc..
Constant-seed motor 3 has three wires, namely runs end electric wire R, start end electric wire S and common port electric wire C.It is understood that the operation principle etc. of constant-seed motor 3 has been well known to those skilled in the art, do not repeat them here.
First electric capacity 4 and the second electric capacity 5 are connected in parallel between operation end electric wire R and start end electric wire S.Run end electric wire R to be connected with zero line O.Specifically, first electric capacity 4 has the first Wiring port 41 and the second Wiring port 42, second electric capacity 5 has the 3rd Wiring port 51 and the 4th Wiring port 52, first Wiring port 41 is connected with the 3rd Wiring port 51 and is connected with the first electric wire 61, second Wiring port 42 is connected with the 4th Wiring port 52 and with start end electric wire S-phase even, runs end electric wire R and the first electric wire 61, zero line O are connected.Common port electric wire C is connected with live wire L.
When compress mechanism run time the first electric capacity 4 and the second electric capacity 5 at least one work.It is to say, when compressing mechanism's work, the first electric capacity 4 and the second electric capacity 5 have following three kinds of working conditions: the first, the first electric capacity 4 works, and the second electric capacity 5 unloads；The second, the first electric capacity 4 unloads, and the second electric capacity 5 works；Three, the first electric capacity 4 and the second electric capacity 5 all work.
Alternatively, the capacity of the first electric capacity 4 and the capacity of the second electric capacity 5 can be equal, it is also possible to not etc..Such as, when the capacity of the capacity of the first electric capacity 4 and the second electric capacity 5 is unequal, it is possible to make the capacity capacity more than the second electric capacity 5 of the first electric capacity 4.
Such as, when the capacity of the first electric capacity 4 is more than the capacity of the second electric capacity 5, when positive displacement compressor such as duplex cylinder compressor single cylinder operates (now transfiguration cylinder 21 unloads), can only make any one work (such as only the second electric capacity 5 works) in the first electric capacity 4 and the second electric capacity 5, to ensure that when single cylinder operates the efficiency of constant-seed motor 3 does not decline；And the first electric capacity 4 and the second electric capacity 5 can be made all to work during twin-tub operating (now transfiguration cylinder 21 runs), or only make any one work (such as only the first electric capacity 4 works) in the first electric capacity 4 and the second electric capacity 5, sufficiently large to ensure the torsion that twin-tub operates, electric efficiency is high.
Thus, positive displacement compressor assembly 100 according to embodiments of the present invention, by arranging the first above-mentioned electric capacity 4 and the second electric capacity 5, it is possible not only to ensure that the torsion of operating is sufficiently large when transfiguration cylinder 21 works, constant-seed motor 3 efficiency is high, and when transfiguration cylinder 21 unloads without influence on the efficiency of constant-seed motor 3.
A specific embodiment according to the present invention, as it is shown in figure 1, the branch road connected with the first electric capacity 4 is provided with the first switch 71.Specifically, second Wiring port 42 is by the second electric wire 62 with start end electric wire S-phase even, first switch 71 is located on the second electric wire 62, second Wiring port 42 of the second electric capacity 5 can either directly through the 3rd electric wire 63 with start end electric wire S-phase even, now no matter positive displacement compressor such as duplex cylinder compressor is that the second electric capacity 5 is in running order all the time in single cylinder operating or twin-tub operating.When positive displacement compressor such as duplex cylinder compressor twin-tub operates, 71 Guan Bis can be switched by first, the first electric capacity 4 energising is made to run, now the capacitance of constant-seed motor 3 is the capacity sum of the first electric capacity 4 and the second electric capacity 5, and when positive displacement compressor such as duplex cylinder compressor single cylinder operates, it is possible to switch 71 disconnections by first, make the first electric capacity 4 not work (namely no power runs), now only the second electric capacity 5 energising runs, and the capacitance of constant-seed motor 3 is the capacity of the second electric capacity 5.
Further, as in figure 2 it is shown, the branch road connected with the second electric capacity 5 is provided with second switch 72.
When positive displacement compressor such as duplex cylinder compressor single cylinder operates, can disconnect the first switch 71 makes the second electric wire 62 and start end electric wire S disconnect, and Guan Bi second switch 72 makes the 3rd electric wire 63 and start end electric wire S electrical connection, now the first electric capacity 4 no power runs, the second electric capacity 5 energising runs, and makes the capacitance of constant-seed motor 3 be only the capacity of the second electric capacity 5.
When positive displacement compressor such as duplex cylinder compressor twin-tub operates, the first switch 71 and second switch 72 can be closed at, make the second electric wire 62 and start end electric wire S electrical connection, and make the 3rd electric wire 63 and start end electric wire S electrical connection, now the first electric capacity 4 and the second electric capacity 5 are all energized operation, and the capacitance of constant-seed motor 3 is the capacity sum of the first electric capacity 4 and the second electric capacity 5；Certainly, the first switch 71 can also be closed and make the second electric wire 62 and start end electric wire S electrical connection, and disconnection second switch 72 makes the 3rd electric wire 63 and start end electric wire S disconnect, now the first electric capacity 4 energising runs, the second electric capacity 5 no power runs, and makes the capacitance of constant-seed motor 3 be only the capacity (now the capacity of the first electric capacity 4 is preferably greater than the capacity of the second electric capacity 5) of the first electric capacity 4.
As it is shown on figure 3, the refrigerating plant 200 of embodiment according to a second aspect of the present invention, including the positive displacement compressor assembly 100 according to the above-mentioned first aspect embodiment of the present invention.
nullSuch as in the example of fig. 3，Refrigerating plant 200 includes First Heat Exchanger 201、Second heat exchanger 202、Throttling arrangement 203、Control valve 204 and positive displacement compressor assembly 100，Positive displacement compressor assembly 100 includes air entry 101 and air vent 102，Control valve 204 and there is the first valve port 2041、Second valve port 2042、3rd valve port 2043 and the 4th valve port 2044，First valve port 2041 is connected with air vent 102，Second valve port 2042 is connected with one end of the second heat exchanger 202，3rd valve port 2043 is connected with air entry 101，4th valve port 2044 is connected with one end of First Heat Exchanger 201，Throttling arrangement 203 is connected between the other end of First Heat Exchanger 201 and the other end of the second heat exchanger 202，When the first valve port 2041 connects with the 4th valve port 2044, the second valve port 2042 connects with the 3rd valve port 2043，When the first valve port 2041 connects with the second valve port 2042, the 3rd valve port 2043 connects with the 4th valve port 2044，So that refrigerating plant 200 can be changeable between refrigeration mode and heating mode.Alternatively, controlling valve 204 is cross valve.
Refrigerating plant 200 according to embodiments of the present invention, by arranging above-mentioned positive displacement compressor assembly 100, it is possible to effectively promotes the overall performance of refrigerating plant 200.
Other of positive displacement compressor assembly 100 according to embodiments of the present invention and refrigerating plant 200 are constituted and operation is all known for those of ordinary skills, are not detailed herein.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (8)
1. a positive displacement compressor assembly, it is characterised in that including:
Power supply, described power supply has zero line and live wire；
Compression mechanism, described compression mechanism includes transfiguration cylinder；
Constant-seed motor, described constant-seed motor has operation end electric wire, start end electric wire and common port electric wire, and described common port electric wire is connected with described live wire；And
First electric capacity and the second electric capacity, described first electric capacity and described second Capacitance parallel connection are between described operation end electric wire and described start end electric wire, and described operation end electric wire is connected with described zero line, the first electric capacity described in when described compression mechanism runs and at least one work in described second electric capacity.
2. positive displacement compressor assembly according to claim 1, it is characterised in that the first electric capacity and described second electric capacity described in when described transfiguration cylinder runs all work or only described first electric capacity work, the only described second electric capacity work when described transfiguration cylinder unloads.
3. positive displacement compressor assembly according to claim 1 and 2, it is characterised in that be provided with the first switch with the branch road of described first capacitances in series.
4. positive displacement compressor assembly according to claim 3, it is characterised in that be provided with second switch with the branch road of described second capacitances in series.
5. positive displacement compressor assembly according to claim 1, it is characterised in that the capacity of the capacity of described first electric capacity and described second electric capacity is not etc..
6. positive displacement compressor assembly according to claim 5, it is characterised in that the capacity of described first electric capacity is more than the capacity of described second electric capacity.
7. positive displacement compressor assembly according to claim 1, it is characterised in that the capacity of described first electric capacity is equal with the capacity of described second electric capacity.
8. a refrigerating plant, it is characterised in that include the positive displacement compressor assembly according to any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610122290.6A CN105756895B (en) | 2016-03-03 | 2016-03-03 | Positive displacement compressor component and refrigerating plant with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610122290.6A CN105756895B (en) | 2016-03-03 | 2016-03-03 | Positive displacement compressor component and refrigerating plant with it |
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| Publication Number | Publication Date |
|---|---|
| CN105756895A true CN105756895A (en) | 2016-07-13 |
| CN105756895B CN105756895B (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610122290.6A Active CN105756895B (en) | 2016-03-03 | 2016-03-03 | Positive displacement compressor component and refrigerating plant with it |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147843A1 (en) * | 2016-03-03 | 2017-09-08 | 广东美芝制冷设备有限公司 | Variable capacitance compressor assembly and refrigeration device comprising same |
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| CN1629566A (en) * | 2003-12-15 | 2005-06-22 | 乐金电子(天津)电器有限公司 | Control device for compressor |
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| CN1740568A (en) * | 2004-08-25 | 2006-03-01 | Lg电子株式会社 | Apparatus and method for controlling operation of compressor |
| CN1800644A (en) * | 2005-01-07 | 2006-07-12 | Lg电子株式会社 | Apparatus and method for controlling operation of compressor |
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| CN101629570A (en) * | 2008-07-16 | 2010-01-20 | Lg电子株式会社 | Motor, compressor and air conditioning system having the same |
| CN102017396A (en) * | 2007-10-30 | 2011-04-13 | Lg电子株式会社 | Linear motor and reciprocating compressor employing the same |
| CN202503466U (en) * | 2012-04-20 | 2012-10-24 | 珠海格力电器股份有限公司 | Compressor starting circuit and air conditioner |
| CN203278716U (en) * | 2013-05-23 | 2013-11-06 | Tcl空调器(中山)有限公司 | Compressor soft-start control circuit and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07298579A (en) * | 1994-04-20 | 1995-11-10 | Matsushita Refrig Co Ltd | Single-phase induction motor for refrigerator compressor |
| CN1629566A (en) * | 2003-12-15 | 2005-06-22 | 乐金电子(天津)电器有限公司 | Control device for compressor |
| CN1657777A (en) * | 2004-02-20 | 2005-08-24 | Lg电子株式会社 | Apparatus and method for controlling operation of compressor |
| CN1740568A (en) * | 2004-08-25 | 2006-03-01 | Lg电子株式会社 | Apparatus and method for controlling operation of compressor |
| CN1800644A (en) * | 2005-01-07 | 2006-07-12 | Lg电子株式会社 | Apparatus and method for controlling operation of compressor |
| CN200987130Y (en) * | 2006-12-27 | 2007-12-05 | 上海日立电器有限公司 | Variable capacitor starting/running device for air-conditioner compressor |
| CN102017396A (en) * | 2007-10-30 | 2011-04-13 | Lg电子株式会社 | Linear motor and reciprocating compressor employing the same |
| CN101629570A (en) * | 2008-07-16 | 2010-01-20 | Lg电子株式会社 | Motor, compressor and air conditioning system having the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017147843A1 (en) * | 2016-03-03 | 2017-09-08 | 广东美芝制冷设备有限公司 | Variable capacitance compressor assembly and refrigeration device comprising same |
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| CN105756895B (en) | 2018-07-17 |
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