CN105987545B - A kind of liquid storage device, compressor and air-conditioning system - Google Patents
A kind of liquid storage device, compressor and air-conditioning system Download PDFInfo
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- CN105987545B CN105987545B CN201510056810.3A CN201510056810A CN105987545B CN 105987545 B CN105987545 B CN 105987545B CN 201510056810 A CN201510056810 A CN 201510056810A CN 105987545 B CN105987545 B CN 105987545B
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Abstract
The present invention provides a kind of liquid storage device, the compressor set comprising the liquid storage device, and the air-conditioning system comprising the compressor set.Liquid storage device of the invention can inhibit excessive liquid refrigerant to enter in compressor by reducing the Flux equivalent diameter of lower hole for back flow, and the suitably upper hole for back flow of Flux equivalent diameter is arranged by the position of the certain altitude above lower hole for back flow, when the liquid level for the liquid refrigerant and refrigerator oil being trapped in inside liquid storage device reaches upper hole for back flow, refrigerator oil by upper hole for back flow flow into air outlet pipe of liquid storage device, into compresser cylinder in realize oil return；Liquid storage device of the invention has taken into account time liquid and oil return, dexterously solves the problems, such as that liquid measure is excessive and oil return may be insufficient simultaneously, especially suitable for frequency-conversion air-conditioning system.
Description
Technical field
The invention belongs to field of air conditioning, it is related to a kind of liquid storage device, compressor and air-conditioning system.
Background technique
The compressor of the prior art more or less all can be containing incomplete in refrigerant during sucking refrigerant
The liquid refrigerant of gasification.In order to avoid liquid refrigerant enters compresser cylinder, it is arranged at the air inlet pipe of compressor and is used for
The gas-liquid separator (also referred to as liquid storage device) of gas-liquid separation guarantees to enter compressor to separate the liquid refrigerant not being gasified totally
Refrigerant in cylinder is dry saturated steam.Liquid storage device is generally arranged at the side of the seal casinghousing of compressor, direct by connecting tube
It is tightly connected with the air inlet of cylinder in compressor assembly.
But compressor, after operating after a period of time, refrigerator oil can accumulate in the lower part of liquid storage device.In order to make to store up
The refrigerator oil that liquid device bottom is accumulated can return to compressor, usually in the inside of liquid storage device, the outlet being directly connected to cylinder
The lower position of pipe opens up a small hole for back flow (also referred to as oil return hole).
The aperture of the hole for back flow is generally 1.5mm, however during actual motion the problem is that: work as liquid measure
When excessive, it will lead to the liquid refrigerant increase into compressor, influence the reliability of compressor.
In particular, associated components therein, such as throttle part capillary are difficult in nowadays widely used convertible frequency air-conditioner
To take into account the whole frequency range of low frequency and high frequency.Such as when capillary size matching low frequency operating condition, pressure when may result in high frequency
Contracting machine air-breathing temperature is excessive.Conversely, if when the size of capillary being made to match high frequency operating condition, general storage when will lead to low frequency operating condition again
Liquid device liquid measure is excessive.Therefore when capillary is using any frequency operating condition as matching operating condition, compressor is in other frequency operating conditions
May occur one of above two problem when lower operation.
Summary of the invention
Liquid/oil-returning structure liquid storage device is returned with suitable the purpose of the present invention is to provide a kind of, can either be inhibited
More liquid refrigerants enter in compresser cylinder, solve the problems, such as that liquid measure is excessive, and can be realized the oil return of refrigerator oil,
Meet the lubrication needs of compressor.
One aspect of the present invention provides a kind of liquid storage device comprising shell, air inlet pipe and at least one escape pipe；The shell
Internal portion forms gas-liquid separation chamber；The upper port of the every escape pipe is connected to the gas-liquid separation chamber；The every outlet
Pipe extends to bottom and is pierced by outside the shell the gas-liquid separation is intracavitary；The lower port and compressor of the every escape pipe
A cylinder air inlet connection；The every escape pipe, which is located on the intracavitary tube wall of the gas-liquid separation, offers lower hole for back flow
With the upper hole for back flow being located above the lower hole for back flow；The Flux equivalent diameter Dx of the lower hole for back flow is less than 1.5mm, and described
The Flux equivalent diameter Dx of lower hole for back flow is less than the Flux equivalent diameter Dy of the upper hole for back flow.
The upper hole for back flow and lower hole for back flow, can be hole shape, is also possible to non-circular hole shape, such as rectangle etc.
Other regular shapes, or it is also possible to irregular irregularly-shaped hole；It is preferred that hole shape.
Term " Flux equivalent diameter " refers in the case where same traffic, and the diameter of the equal circular hole of hydraulic radius is determined
Justice is the Flux equivalent diameter of non-circular hole；Wherein, on the effective cross-section always flowed, the contact length of fluid and solid wall surface is known as
Wet perimeter；The ratio of the effective cross-sectional area and wetted perimeter that always flow is defined as hydraulic radius；Waterpower of the equivalent diameter equal to 4 times half
Diameter.When upper hole for back flow and lower hole for back flow are non-circular hole, its Flux equivalent diameter can be gone out according to its dimension conversion.
Preferably, the aperture Flux equivalent diameter Dx of the lower hole for back flow is 0.5mm-1.25mm, the upper hole for back flow
Flux equivalent diameter Dy is 0.75-1.75mm.
Preferably, the lower hole for back flow is positioned close to the position of the gas-liquid separation chamber bottom, the upper hole for back flow with
Difference in height between lower hole for back flow is 10mm-30mm.
Preferably, the difference in height between the upper hole for back flow and lower hole for back flow is 15mm-20mm.
Preferably, when the consumption power for the cylinder being connected to when the escape pipe is less than or equal to 1Hp, the Dx=of the escape pipe
0.5-0.75mm, Dy=0.75-1.0mm；When the consumption power for the cylinder that the escape pipe is connected to is greater than 1Hp, less than 2Hp
When, the Dx=0.5-0.75mm of the escape pipe, Dy=1.0-1.25mm；When the consumption power for the cylinder that the escape pipe is connected to
More than or equal to 2Hp, be less than 3Hp when, the Dx=0.75-1.0mm of the escape pipe, Dy=1.25-1.5mm；When the escape pipe institute
When the consumption power of the cylinder of connection is more than or equal to 3Hp, is less than 4Hp, the escape pipe Dx=1.0-1.25mm, Dy=1.5-
1.75mm。
Preferably, when the consumption power for the cylinder being connected to when the escape pipe is less than or equal to 1Hp, the Dx=of the escape pipe
0.6mm, Dy=0.85mm；When the consumption power for the cylinder that the escape pipe is connected to is 1.5Hp, escape pipe Dx=
0.6mm, Dy=1.1mm；When the consumption power for the cylinder that the escape pipe is connected to is 2Hp, the Dx=of the escape pipe
0.85mm, Dy=1.35mm；When the consumption power for the cylinder that the escape pipe is connected to is 2.5Hp, the Dx=of the escape pipe
0.85mm, Dy=1.35mm；When the consumption power for the cylinder that the escape pipe is connected to is 3Hp, the Dx=of the escape pipe
1.1mm, Dy=1.6mm.
Another aspect of the present invention provides a kind of compressor set, which includes compressor and above-mentioned liquid storage device, institute
Stating compressor includes at least one cylinder, and each cylinder is connected to an escape pipe of the liquid storage device.
Further aspect of the present invention provides a kind of air-conditioning system, which includes evaporator and above-mentioned compressor dress
It sets；The outlet that the gas-liquid separation chamber of the liquid storage device passes through the air inlet pipe and the evaporator.
Preferably, which is frequency-conversion air-conditioning system.
Preferably, the capillary section stream unit in the frequency-conversion air-conditioning system uses the specification being adapted to high frequency operating condition.
Compared with prior art, liquid storage device of the invention can be inhibited by reducing the Flux equivalent diameter of lower hole for back flow
More liquid refrigerants enter in compressor, and Flux equivalent diameter is arranged by the position of the certain altitude above lower hole for back flow
Suitably upper hole for back flow, when the liquid level for the liquid refrigerant and refrigerator oil being trapped in inside liquid storage device reaches upper hole for back flow
When, refrigerator oil by upper hole for back flow flow into air outlet pipe of liquid storage device, into compresser cylinder in realize oil return, meet compressor gas
The lubricating requirement of cylinder；Therefore, liquid storage device of the invention has taken into account time liquid and oil return, dexterously simultaneously solve liquid measure it is excessive and
The possible insufficient problem of oil return.
Liquid storage device of the invention and the compressor set comprising the liquid storage device, can be with especially suitable for frequency-conversion air-conditioning system
Well solve frequency-conversion air-conditioning system excessive problem of existing liquid measure in low frequency operating condition.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of the liquid storage device of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the compressor set of the embodiment of the present invention.
Specific embodiment
Detailed description will be provided to the embodiment of the present invention below.Although the present invention will combine some specific embodiments
It is illustrated and illustrates, but should be noted that the present invention is not merely confined to these embodiments.On the contrary, to the present invention
The modification or equivalent replacement of progress, are intended to be within the scope of the claims of the invention.
In addition, in order to better illustrate the present invention, numerous details is given in specific embodiment below.
It will be understood by those skilled in the art that without these details, the present invention equally be can be implemented.It is right in other example
It is not described in detail in known structure and component, in order to highlight purport of the invention.
As shown in Figure 1, the liquid storage device 100 of the embodiment of the present invention includes shell 10, air inlet pipe 20, escape pipe 30 and strainer group
Part 40.
Liquid storage device 100 passes through the outlet of air inlet pipe 20 and evaporator (not shown)；Liquid storage device 100 passes through outlet
Pipe 30 is connected to the cylinder air inlet 211 of compressor 200.Closed gas-liquid separation chamber 11 is formed inside shell 10.Air inlet pipe 20
The top of shell 10, the upper port of air inlet pipe 20 and the outlet of evaporator, the lower port and gas-liquid of air inlet pipe 20 are set
Disengagement chamber 11 is connected to.
The appropriate location on 11 top of gas-liquid separation chamber is arranged in net-filter assembly 40.Refrigerant first passes through after the entrance of air inlet pipe 20
The filtering of net-filter assembly 40.
The upper port of escape pipe 30 is connected to gas-liquid separation chamber 11, and it is interior, net-filter assembly 40 to be located at gas-liquid separation chamber 11
Lower section；Escape pipe 30 extends to the bottom of gas-liquid separation chamber 11 and is pierced by outside shell 10；The lower port and compressor of escape pipe 30
200 cylinder air inlet 211 is connected to.In the liquid storage device 100 of the present embodiment, an only escape pipe 30.
Air inlet pipe 20 and escape pipe 30 can be fixedly connected with shell 10 by welding manner.
Escape pipe 30, which is located on the intracavitary tube wall of gas-liquid separation, to be offered lower hole for back flow 31 and is located above lower hole for back flow 31
Upper hole for back flow 32.The Flux equivalent diameter Dx of lower hole for back flow is less than 1.5mm, and Dx is less than the Flux equivalent diameter of upper hole for back flow
Dy。
Upper hole for back flow 31 and lower hole for back flow 32, are hole shape in the present embodiment.In an alternate embodiment, last time liquid
Hole 31 and lower hole for back flow 32 are also possible to other regular shapes such as non-circular hole shape, such as rectangle, or are also possible to irregular
Irregularly-shaped hole.
Term " Flux equivalent diameter " refers in the case where same traffic, and the diameter of the equal circular hole of hydraulic radius is determined
Justice is the Flux equivalent diameter of non-circular hole；Wherein, on the effective cross-section always flowed, the contact length of fluid and solid wall surface is known as
Wetted perimeter；The ratio of the effective cross-sectional area and wetted perimeter that always flow is defined as hydraulic radius；Equivalent diameter is equal to 4 times of hydraulic radius.
When upper hole for back flow and lower hole for back flow are non-circular hole, its Flux equivalent diameter can be gone out according to its dimension conversion.
Preferably, the Dx of lower hole for back flow 31 is 0.5mm-1.25mm, and the Dy of upper hole for back flow 32 is 0.75-1.75mm；Next time
Fluid apertures 31 is positioned close to the position of 11 bottom of gas-liquid separation chamber, and the height difference H between upper hole for back flow 32 and lower hole for back flow 31 is
10mm-30mm, preferably 15-20mm.
In the present embodiment, an escape pipe 30 is set in the gas-liquid separation chamber 11 of liquid storage device 100, and compressor 200 is single
Cylinder compressor.
It is substantially parallel in the gas-liquid separation chamber 11 of liquid storage device 100 to be positioned apart from two in a change case (not shown)
Root escape pipe 30, compressor 200 are duplex cylinder compressor；Two escape pipes 30 connect with two cylinders of duplex cylinder compressor 200 respectively
It is logical.The corresponding escape pipe of each cylinder.
The selection of the Dy of Dx and upper hole for back flow 32 about lower hole for back flow 31, the cylinder being connected to the escape pipe 30 disappear
Wasted work rate is related, if being symbol P by the consumption power setting of the cylinder, lists below by table, disappears for different cylinders
The selection of wasted work rate, Dx and Dy.
(note: in general, escape pipe one cylinder of corresponding connection；P in table refers to the consumption function of single cylinder
Rate；In practice, also there is a case where escape pipe is connected to two cylinders, then the P in table refers to the cylinder that the escape pipe is connected to
Total consumption power.)
In another change case (not shown), whether upper hole for back flow can be set into 2 or more.Multiple last time liquid
The arrangement mode in hole can be equidistant, can also return liquid requirement under different frequency operating condition depending on specific air conditioner with unequal spacing
Depending on.
As shown in Fig. 2, above-mentioned liquid storage device 100 connect one pressure of formation with the air inlet 211 of the cylinder 210 of compressor 200
Contracting machine device.The compressor set can be applied in air-conditioning system, and liquid storage device 100 is connect by air inlet pipe 20 with evaporator,
Form the important component of air-conditioning system.Above-mentioned liquid storage device 100 and the compressor set comprising the liquid storage device 100 are special
Suitable for frequency-conversion air-conditioning system, it can well solve present in frequency-conversion air-conditioning system that low frequency operating condition liquid measure is excessive to ask
Topic, and not will lead to the situation that oil return is inadequate, compressor lubrication is insufficient simultaneously.
In frequency-conversion air-conditioning system, capillary section stream unit uses the specification being adapted to high frequency operating condition, and thus bring is low
The big problem of frequency operating condition liquid measure can be solved using liquid storage device of the invention.Therefore, the capillary being adapted to high frequency operating condition
When specification and liquid storage device of the invention are jointly used in frequency-conversion air-conditioning system, high frequency operating condition and low frequency operating condition can be taken into account.
Though the above embodiment of the present invention by taking vertical compressor as an example, but not limited to this, and be also possible to other laying sides
The compressor of formula, such as horizontal compressor etc..
In summary, liquid storage device of the invention can inhibit excessive liquid by reducing the Flux equivalent diameter of lower hole for back flow
State refrigerant enters in compressor, and by above lower hole for back flow certain altitude position be arranged Flux equivalent diameter it is suitable
Upper hole for back flow, it is cold when the liquid level for the liquid refrigerant and refrigerator oil being trapped in inside liquid storage device reaches upper hole for back flow
Freeze machine oil by upper hole for back flow flow into air outlet pipe of liquid storage device, into compresser cylinder in realize oil return, meet compresser cylinder
Lubricating requirement；Therefore, liquid storage device of the invention has taken into account time liquid and oil return, dexterously solves that liquid measure is excessive and oil return simultaneously
Possible insufficient problem.
Liquid storage device of the invention and the compressor set comprising the liquid storage device, can be with especially suitable for frequency-conversion air-conditioning system
Well solve frequency-conversion air-conditioning system excessive problem of existing liquid measure in low frequency operating condition.
Claims (9)
1. a kind of liquid storage device comprising shell, air inlet pipe and at least one escape pipe；
The enclosure interior forms gas-liquid separation chamber；
The upper port of the every escape pipe is connected to the gas-liquid separation chamber；The every escape pipe is in the gas-liquid separation chamber
It inside extends to bottom and is pierced by outside the shell；The lower port of every escape pipe and a cylinder air inlet of compressor connect
It is logical；
It is characterized by:
The every escape pipe, which is located on the intracavitary tube wall of the gas-liquid separation, offers lower hole for back flow and positioned at the liquid next time
Upper hole for back flow above hole；The Flux equivalent diameter Dx of the lower hole for back flow is less than 1.5mm, and the flow of the lower hole for back flow is worked as
Measure the Flux equivalent diameter Dy that diameter Dx is less than the upper hole for back flow；
The aperture Flux equivalent diameter Dx of the lower hole for back flow is 0.5mm-1.25mm, the Flux equivalent diameter of the upper hole for back flow
Dy is 0.75-1.75mm.
2. liquid storage device as described in claim 1, it is characterised in that: the lower hole for back flow is positioned close to the gas-liquid separation chamber
The position of bottom, the difference in height between the upper hole for back flow and lower hole for back flow are 10mm-30mm.
3. liquid storage device as claimed in claim 2, it is characterised in that: the difference in height between the upper hole for back flow and lower hole for back flow is
15mm-20mm。
4. liquid storage device as described in claim 1, it is characterised in that:
When the consumption power for the cylinder that the escape pipe is connected to is less than or equal to 1Hp, the Dx=0.5-0.75mm of the escape pipe,
Dy=0.75-1.0mm；
When the consumption power for the cylinder that the escape pipe is connected to is greater than 1Hp, is less than 2Hp, the Dx=0.5- of the escape pipe
0.75mm, Dy=1.0-1.25mm；
When the consumption power for the cylinder that the escape pipe is connected to is more than or equal to 2Hp, is less than 3Hp, the Dx=of the escape pipe
0.75-1.0mm, Dy=1.25-1.5mm；
When the consumption power for the cylinder that the escape pipe is connected to is more than or equal to 3Hp, is less than 4Hp, escape pipe Dx=1.0-
1.25mm Dy=1.5-1.75mm.
5. liquid storage device as claimed in claim 4, it is characterised in that:
When the consumption power for the cylinder that the escape pipe is connected to is less than or equal to 1Hp, the Dx=0.6mm of the escape pipe, Dy=
0.85mm；
When the consumption power for the cylinder that the escape pipe is connected to is 1.5Hp, the escape pipe Dx=0.6mm, Dy=1.1mm；
When the consumption power for the cylinder that the escape pipe is connected to is 2Hp, the Dx=0.85mm of the escape pipe, Dy=
1.35mm；
When the consumption power for the cylinder that the escape pipe is connected to is 2.5Hp, the Dx=0.85mm of the escape pipe, Dy=
1.35mm；
When the consumption power for the cylinder that the escape pipe is connected to is 3Hp, the Dx=1.1mm of the escape pipe, Dy=1.6mm.
6. a kind of compressor set, it is characterised in that: the device includes compressor and such as any one of claim 1 to 5 institute
The liquid storage device stated；The compressor includes at least one cylinder, and each cylinder is connected to an escape pipe of the liquid storage device.
7. a kind of air-conditioning system, it is characterised in that: the air-conditioning system includes evaporator and compressor as claimed in claim 6 dress
It sets；The outlet that the gas-liquid separation chamber of the liquid storage device passes through the air inlet pipe and the evaporator.
8. air-conditioning system as claimed in claim 7, it is characterised in that: the air-conditioning system is frequency-conversion air-conditioning system.
9. air-conditioning system as claimed in claim 8, it is characterised in that: the capillary section stream unit in the frequency-conversion air-conditioning system is adopted
With the specification being adapted to high frequency operating condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056810.3A CN105987545B (en) | 2015-02-03 | 2015-02-03 | A kind of liquid storage device, compressor and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056810.3A CN105987545B (en) | 2015-02-03 | 2015-02-03 | A kind of liquid storage device, compressor and air-conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN105987545A CN105987545A (en) | 2016-10-05 |
| CN105987545B true CN105987545B (en) | 2019-03-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435042B (en) * | 2019-01-11 | 2021-09-24 | 青岛海尔智能技术研发有限公司 | Compression type refrigerating system and refrigerating and freezing device |
| CN112797678A (en) * | 2019-11-13 | 2021-05-14 | 广东美芝精密制造有限公司 | Air outlet pipe assembly and processing method thereof, liquid storage device and processing method thereof |
| CN114111112B (en) * | 2021-12-01 | 2023-06-20 | 天津双昊车用空调有限公司 | Self-adaptive oil return process for gas-liquid separation |
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| CN203443193U (en) * | 2013-08-29 | 2014-02-19 | 德州市旭日空调设备有限公司 | Gas-oil balance type gas-liquid separation device |
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|---|---|---|---|---|
| JPH094934A (en) * | 1995-06-20 | 1997-01-10 | Sanyo Electric Co Ltd | Deep freezer |
| CN101413740A (en) * | 2007-10-16 | 2009-04-22 | 上海日立电器有限公司 | Liquid storing device |
| CN201297813Y (en) * | 2008-10-31 | 2009-08-26 | 青岛海信日立空调系统有限公司 | Novel regenerative gas-liquid separator |
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Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 888, Shanghai Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
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