CN106382768B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN106382768B CN106382768B CN201610757973.9A CN201610757973A CN106382768B CN 106382768 B CN106382768 B CN 106382768B CN 201610757973 A CN201610757973 A CN 201610757973A CN 106382768 B CN106382768 B CN 106382768B
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- Prior art keywords
- refrigerant
- mentioned
- lubricating oil
- liquid
- air conditioner
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/16—Lubrication
Abstract
The present invention provides a kind of air conditioner, inhibits liquid refrigerant and lubricating oil separation inside liquid storage device to ensure the lubricants capacity transported to compressor.Use individual R32 refrigerant or contains the mixed type refrigerant of the above R32 refrigerant of definite quality percentage as refrigerant.It is supplied to compressor (104) possessed by outdoor unit (100) in order to make liquid refrigerant and lubricating oil not be separated into two layers and is mixed with the refrigerant of the lubricating oil of specified value or more.Make to return to liquid storage device (105) by the lubricating oil that oil eliminator (106) separate by using oily tubule (107) is returned, inhibits to generate two separate region in liquid storage device.By conveying the gaseous refrigerant for containing appropriate liquid refrigerant from liquid storage device (105) to compressor (104), lubricating oil can be supplied to compressor (104).
Description
It is in November, 2013 that the present invention, which is application No. is 201310544957.8, entitled " air conditioner ", the applying date,
The divisional application of patent application on the 06th.
Technical field
The present invention relates to air conditioners.
Background technique
Use HFC class refrigerant as the refrigerant of air conditioner, use with refrigerant have intermiscibility etherificate oil as
The technology of refrigerator oil is well known (patent document 1).In addition, as HFC class refrigerant R32 due to compressor discharge
Temperature keeps the refrigerant of suction port of compressor dry than previous 10~15 DEG C of refrigerant R410A high, therefore to inhibit discharge temperature
Degree is that 0.65 or more and 0.85 technology below is also well known (patent document 2).
Existing technical literature
Patent document 1: Japanese Unexamined Patent Publication 11-325620 bulletin
Patent document 2: No. 3956589 bulletins of Japanese Patent No.
As HFC class refrigerant R32 due to warmization coefficient GWP (Global Warming Potential) value
It is low, therefore be counted as the refrigerant of environmental sound and be expected to.But if it is conceived between refrigerant R32 and lubricating oil
Mixed characteristic, then intermiscibility declines in the case where small with the composite rate of lubricating oil, and there are lubricating oil and liquid refrigerants point
From the region for two layers.
In addition, control refrigerant R32, make its refrigerant aridity of suction port of compressor side i.e. than previous refrigerant
R410 is small.Therefore, using R32, the liquid refrigerant and lubrication that are set in the liquid storage device of suction port of compressor side
The lubricating oil composite rate of the mixed liquor of oil becomes smaller.Therefore, it is two layers that liquid refrigerant and lubricating oil, which can be easily separated, in liquid storage device,
Lubricating oil is difficult to return to compressor.Thus cause lubricant in compressor insufficient, generate insufficient lubrication etc., reliability decrease.
Summary of the invention
Therefore, it the purpose of the present invention is to provide a kind of air conditioner, is able to suppress liquid refrigerant and lubricating oil separation is
Two layers and reduce the generation of lack of lubrication.
To solve the above subject, the present invention provides a kind of air conditioner, by piping connection indoor unit and outdoor unit, makes to freeze
Agent circulation, above-mentioned air conditioner are characterized in that, using individual R32 refrigerant or contain the above R32 system of definite quality percentage
The mixed type refrigerant of cryogen as refrigerant, supplied to compressor possessed by outdoor unit 100 in order to make liquid refrigerant and
Lubricating oil is not separated into two layers and is mixed with the refrigerant of the lubricating oil of specified value or more.
Outdoor unit can also have: compressor；It is connected to the compressor discharge side, it will be from the refrigerant that compressor is discharged
The oil eliminator that is separated and recovered from of oil；It is connected to the inflow side of contracting machine, liquid refrigerant is separated and stored up from refrigerant
It deposits, and for the liquid storage device to compressor supply gaseous refrigerant；And by returning to the lubricating oil separated by oil eliminator
Liquid storage device, for the lubricating oil composite rate of the liquid refrigerant being stored in liquid storage device and the mixed liquor of lubricating oil to be adjusted to advise
Supply fuel volume adjusting portion more than definite value.
Effect of the invention is as follows.
In accordance with the invention it is possible to which inhibiting liquid refrigerant and lubricating oil separation is two layers, lack of lubrication can be reduced and mentioned
High reliability.
Detailed description of the invention
Fig. 1 is the circuit diagram of air conditioner.
Fig. 2 is the longitudinal section view of liquid storage device.
Fig. 3 is the figure for indicating the mixed characteristic of refrigerant R32 and lubricating oil.
In figure: 1-air conditioner, 100-outdoor units, 101-outdoor heat exchangers, 103-outdoor expansion valves, 104-pressures
Contracting machine, 105-liquid storage devices, 106-oil eliminators, 107-return oily tubule, 108-cubic valves, 109-supercooling heat exchangers
Specific embodiment
Hereinafter, being based on attached drawing, embodiments of the present invention will be described.In the present embodiment, as detailed in the following,
In the case where using HFC class refrigerant, that is, R32 refrigerant of at least percentage containing definite quality or more, supplied to compressor
It is mixed with the refrigerant of the above lubricating oil of specified value.Specifically, it is being stored in the liquid storage device connecting with the inflow side of compressor
Mixed liquor (mixed liquor of liquid refrigerant and lubricating oil) in, the composite rate of lubricating oil is adjusted to specified value or more.In order to
The composite rate for adjusting lubricating oil in the mixed liquor in liquid storage device, separates the oil eliminator for the discharge side for being connected to compressor
Lubricating oil is returned in liquid storage device in a manner of meeting rated condition.Herein, in the present embodiment, using contain 70 mass hundred
Divide the mix refrigerant than the above R32 refrigerant.If the ratio of R32 reaches 70 mass percents or more, the value of GWP, sucking
Humidity is equal with characteristics such as the intermiscibilities of oil with R32.
According to the present embodiment, by adjusting in the mixed liquor of liquid storage device inner refrigerant R32 and lubricating oil lubricating oil it is mixed
Conjunction rate, being able to suppress liquid refrigerant and lubricating oil separation in liquid storage device is two layers.As a result, making to supply from liquid storage device to compressor
The amount of the lubricating oil contained in the refrigerant given increases, and can reduce the generation of the insufficient state of affairs of lubricant in compressor, can
Improve the reliability of compressor and air conditioner.
(embodiment 1)
Illustrate embodiment using FIG. 1 to FIG. 3.Fig. 1 shows the configuration examples of the refrigerating cycle of the air conditioner 1 of the present embodiment.
Refrigerating cycle possessed by air conditioner 1 has at least one outdoor unit 100 and at least one indoor unit 200.In Fig. 1
In, although illustrating multiple indoor unit 200A, 200B, in the case where non-intended distinction, it is referred to as indoor unit 200.In Fig. 1
In, although illustrating the example of one outdoor unit 100 and two indoor units 200 of connection, however, it is not limited to this also be can connect
The indoor unit 200 of more than two outdoor units 100 and three or more.
Outdoor unit 100 is for example configured to include outdoor heat exchanger 101, outdoor fan 102, outdoor expansion valve 103, compression
Machine 104, oil eliminator 106, returns oily tubule 107, cubic valve 108, supercooling heat exchanger 109, supercooling point at liquid storage device 105
Branch expansion valve 110 and respectively piping 112~117.
Indoor unit 200 is for example configured to include indoor heat exchanger 201, indoor fan 202, indoor expansion valve 203.It is outdoor
Machine 100 and indoor unit 200 are connected by liquid pipe 301 and gas pipe 302.
Herein, in the present embodiment, using the refrigerant being only made of R32 or containing more than 70 mass percents
The mix refrigerant of R32 refrigerant.Next movement is illustrated.
The compressor main body (not shown) that compressor 104 for example has arbor case and is set in arbor case, and
The bottom side accumulation of arbor case has lubricating oil.In the compressed action of compressor main body, the lubricating oil in arbor case is in pumping action
Place supply that is lower to be picked up, being lubricated to needs.A part of lubricating oil is discharged 112 discharge of piping together with refrigerant.
The vaporous refrigerant of low pressure flows to compressor 104 from liquid storage device 105 by piping 117.Compressor 104 will be by that will make
Cryogen compression, so that the vaporous refrigerant of high temperature and pressure is discharged from outlet.From the outlet of compressor 104 to piping 112
The vaporous refrigerant of the high pressure of interior discharge flows into the oil eliminator 106 as " oil eliminator " by piping 112.From compressor
Lubricating oil is mixed in the vaporous refrigerant of the high temperature and pressure of 104 discharges.
Oil eliminator 106 recycles lubricating oil contained by the vaporous refrigerant of high pressure, by the lubricating oil of recycling by returning oily tubule
107 and piping 116 return liquid storage devices 105.Piping 116 is the port for connecting the compressor inflow entrance side of cubic valve 108
With the pipeline of the inflow entrance of liquid storage device 105.Example as " supply fuel volume adjusting portion " return oily tubule 107 be for adjust from
Oil eliminator 106 returns to the oil mass of the lubricating oil of liquid storage device 105 and the device of pressure.
Cubic valve 108, which is for switching, to be guided the vaporous refrigerant of high pressure to outdoor heat exchanger 101 or guidance
The direction switch valve of indoor heat exchanger 201 in indoor unit 200.Cubic valve 108 is when air-cooling system is run, along Fig. 1
Arrow mark line C direction make high pressure it is vaporous refrigerant flowing.The vaporous refrigerant of high pressure is by connecting cubic valve 108
The piping 113 of the entrance side of outdoor heat exchanger side port and outdoor heat exchanger 101 flows into the outdoor as condenser working
Heat exchanger 101.
The vaporous refrigerant of high temperature and pressure is during passing through outdoor heat exchanger 101, with the room sent by outdoor fan 102
Outer air carries out heat exchange and condenses, and becomes the liquid refrigerant (liquid refrigerant) of high temperature and pressure.The liquid system of high temperature and pressure
Cryogen flows into outdoor expansion valve 103 by being connected to the piping 114 of the outlet side of outdoor heat exchanger 101.From outdoor expansion valve
The low-pressure, liquid refrigerant of 103 outflows generates branch, and a portion liquid refrigerant flows into supercooling branch expansion valve 110.
Other liquid refrigerants flow into piping 301 after being further cooled by by supercooling heat exchanger 109.Piping 301 is connection
The piping of the heat exchanger 201 of the heat exchanger 101 and indoor unit 200 of outdoor unit 100.
The liquid refrigerant for flowing into supercooling branch expansion valve 110, which is over cooled after branch's expansion valve 110 is depressured, to be flowed into
Cooling heat exchanger 109.The liquid refrigerant of supercooling heat exchanger 109 is flowed by during supercooling heat exchanger 109
Heat exchange is carried out with other liquid refrigerants and is evaporated, and the vaporous refrigerant of low pressure is become.The vaporous refrigerant of low pressure by with
The return duct 115 of 116 connection of piping flows into liquid storage device 105.
The low-pressure, liquid refrigerant of indoor unit 200 is transported to by after the decompression of indoor expansion valve 203, flows into indoor heat exchange
Device 201.The low-pressure, liquid refrigerant of inflow indoor heat exchanger 201 is by during indoor heat exchanger 201 and by indoor wind
The room air that 202 conveying of fan comes carries out heat exchange and evaporates, and becomes vaporous refrigerant (gaseous refrigerant).
Low-pressure, liquid refrigerant is indoors in heat exchanger 201 when gasification, and indoor air is cooled, to indoor refrigeration.
The gaseous refrigerant flowed out from indoor heat exchanger 201 is transported to outdoor unit 100 by gas pipe 302.
Gaseous refrigerant into outdoor unit 100 passes through cubic valve 108 and piping 116 flows into liquid storage device 105.Liquid storage device
105, by accumulating unevaporated liquid refrigerant, prevent liquid refrigerant from flowing into compressor 104.This is because if compressor
104 compress liquid refrigerant, then exist compressor 104 component it is damaged a possibility that.
Vaporous refrigerant, liquid refrigerant and the lubricating oil returned from oil eliminator 106 flow into liquid storage device 105.Gaseous state
Refrigerant and lubricating oil are transported to compressor 104 after mixing in liquid storage device 105.Liquid refrigerant is trapped in liquid storage device 105.
Movement when to greenhouse operation is illustrated.The flowing of refrigerant when greenhouse is run is indicated with arrow line H.From pressure
The gaseous refrigerant for the high temperature and pressure that contracting machine 104 is discharged, by after lubricating oil separation, passes through cubic 108 quilt of valve by oil eliminator 106
It is delivered to piping 302.Liquid storage device 105 is transported to by returning oily tubule 107 by the isolated lubricating oil of oil eliminator 106.
The gaseous refrigerant of high temperature and pressure from outdoor unit 100 is transported to indoor unit 200 by gas pipe 302.
The high temperature liquid refrigerant for entering the room machine 200 conveys during flowing through in indoor heat exchanger 201 with by indoor fan 202
Room air heat exchange and liquefy, become liquid refrigerant.Liquid refrigerant passes through indoor expansion valve 203 from indoor unit
200 discharges.By the gaseous refrigerant and room air of high temperature and pressure, heat exchanger 200 carries out heat exchange indoors, is warmed up
Room.
The liquid refrigerant that indoor unit 200 is discharged flows to outdoor unit 100 by liquid pipe 301.Into outdoor unit 100
Liquid refrigerant is divided into two parts, a part of liquid refrigerant flows to the expansion of supercooling branch by outdoor expansion valve 103
Valve 110, and liquid storage device 105 is transported to by piping 115,116.
After other refrigerants are depressured by outdoor expansion valve 103, inflow outdoor heat exchanger 101.Flow into outdoor heat exchange
The liquid refrigerant of device 101 carries out heat with the outdoor air conveyed by outdoor fan 102 during flowing through outdoor heat exchanger 101
It exchanges and evaporates, become gaseous refrigerant.Gaseous refrigerant passes through cubic valve 108 and flows into liquid storage device by means of piping 116
105.As described above, gaseous refrigerant and lubricating oil are flowed into and mixed in liquid storage device 105, the gaseous state system of lubricating oil has been dissolved in
Cryogen is transported to compressor 104.
Fig. 2 is the figure of liquid storage device 105 shown in the outdoor unit 100 for the refrigerating cycle for indicating Fig. 1.
In liquid storage device 105, the piping 117 of the piping 116 (ingress pipe) and export being inserted into and be equipped with importing (is led
Outlet pipe).Ingress pipe 116 is for gaseous refrigerant and/or lubricating oil to be imported to the piping in liquid storage device 105.
Its front end side of delivery line 117 is shaped generally as U-shaped, is for that will be mixed with lubricating oil from liquid storage device 105
Gaseous refrigerant be delivered to the piping of compressor 104.Delivery line 117 is with the crooked position of its U-shaped in the bottom of liquid storage device 105
The mode of portion side is installed.The U-shaped bending section of delivery line 117 can immerse accumulation in the liquid refrigerant of liquid storage device 105 as a result,
In.
On the U-shaped bending section of delivery line 117, it is formed with the first liquid return port 121A.On delivery line 117,
Second liquid return port 121B is formed with positioned at the position more top than the first liquid return port 121A.In the upper of delivery line 117
Side, upside in liquid storage device 105 position is formed with the balancing orifice 122 for adjusting pressure in delivery line 117.
The refrigerant and lubricating oil separation flowed into liquid storage device 105 from ingress pipe 116 is liquids and gases.Gaseous refrigerant
Compressor 104 is delivered to by delivery line 117.By the circulation of gaseous refrigerant, liquid is from the first liquid return port 121A quilt
It sucks in delivery line 117, and compressor 104 is delivered to from liquid storage device 105 with defined liquid composite rate.
If the liquid level of liquid storage device 105 be located at it is also more top than second liquid return port 121B, also from second liquid return port
121B sucks liquid, and liquid composite rate increases.Aperture and balancing orifice of the liquid composite rate by two liquid return ports 121A, 121B
122 aperture adjustment.
Herein, in the present embodiment, refrigerant is changed to the smaller R32 of warmization coefficient from previous R410A.If making
Use R32 as refrigerant, then the discharge temperature of compressor 104 improves 10~15 DEG C.In the present embodiment, warm in order to inhibit to be discharged
The entrance aridity of the rising of degree, compressor 104 is set as smaller than in the past.
For this purpose, the accumulation liquid refrigerant of liquid storage device 105 of the present embodiment is more than previous refrigerant R410.If liquid storage device
105 have accumulated more than ever before liquid refrigerant, then are stranded in the lubricating oil composite rate of the mixed liquor of lower part in liquid storage device 105
Become smaller.
Fig. 3 indicates the mixed characteristic of the refrigerant and lubricating oil in the case where using R32 as refrigerant.If refrigerant
The mixed proportion of the lubricating oil of R32 becomes 40% hereinafter, can then find two layers of liquid refrigerant and lubricating oil in low-temperature region
Separated region.That is, the downside of liquid storage device 105, which is detained, liquid refrigerant, there is lube layer in liquid refrigeration oxidant layer.
If the condition in two separate region is set up, mixed liquor the downside of liquid storage device 105 be separated into liquid refrigerant and
Lubricating oil.If the density of the density ratio liquid refrigerant of lubricating oil is small, lubricating oil floats on upside.When lubricating oil floats on liquid
When the upside of refrigerant, lubricating oil is inhaled into delivery line 117 from the first liquid return port 121A, supply to compressor 104
Lubricants capacity decline.If the lubricants capacity for being delivered to compressor 104 tails off, there is the problems such as generating insufficient lubrication and make reliable
Property decline possibility.
Therefore, in the present embodiment, the shape (pipeline area, duct length etc.) for returning oily tubule 107 is set as when oily
The lubricating oil that separator 106 recycles then returns to liquid storage device 105 more than specified amount.Its method of adjustment is expressed as follows.
The liquid fraction for flowing to compressor 104 from liquid storage device 105 is set as R (=(refrigerant liquid flow+lubrication oil stream
Amount)/(refrigerant total flow)), the two separate of the mixed liquor of liquid refrigerant and lubricating oil in liquid storage device 105 it is critical
The lubricating oil composite rate of (the dissolution domain of mixed liquor and the boundary in separation domain) is set as n (=lubricants capacity/refrigerant liquid scale of construction), is flowed
Lubricating oil fluid return rate through returning oily tubule 107 is set as x (=flow of lubrication/refrigerant total flow), flows to from oil eliminator 106
The lubricating oil circulation rate of refrigerating cycle is set as y (=flow of lubrication/refrigerant total flow).
It flows through and returns the lubricating oil fluid return rate x of oily tubule 107 and can be acquired with following formula (1).
X >=n × R-y (1)
In the case where characteristic shown in Fig. 3, if the mixed proportion of lubricating oil is 40% (n=0.4) or more, preferably exists
50% (n=0.5) or more, then it is assumed that be able to suppress generation two separate.Therefore following formulas (2) are obtained.
X >=0.5 × R-y (2)
In addition, from liquid storage device 105 flow to the liquid fraction R of compressor 104 by liquid storage device 105 delivery line 117 liquid
The aperture of return port 121A, 121B and the aperture adjustment of balancing orifice 122.In addition, flowing to the profit of refrigerating cycle from oil eliminator 106
Lubricating oil cycling rate y is determined by the characteristic of compressor 104 and oil eliminator 106.
If using R32 as refrigerant in this wise, it is necessary to make to accumulate the amount of liquid refrigerant increasing in liquid storage device 105
Add, as a result, lubricating oil composite rate declines.But in the present embodiment, the lubricating oil ratio due to being recycled by oil eliminator 106
In the past more return liquid storage device 105, therefore the lubricating oil composite rate in liquid storage device 105 can be improved to specified value (40% with
On, preferably 50% or more).Therefore, according to the present embodiment, the item that two separate region is generated in liquid storage device 105 can be prevented
Part is set up, and is inhibited liquid refrigerant and lubricating oil separation and be sent into sufficient lubricating oil into compressor 104.
In addition, the present invention is not limited to above-described embodiments.Those skilled in the art within the scope of the invention can be into
The various additions of row and change.For example, the method for making lubricating oil return to liquid storage device from oil eliminator is not limited to return oily tubule,
Other methods can be used.In addition, the present invention can also be shown as example, " outdoor unit used in a kind of air conditioner, uses list
Only R32 refrigerant contains the mixed type refrigerant of the above R32 refrigerant of definite quality percentage as refrigerant, to compression
Machine supply is mixed with the refrigeration of the lubricating oil of specified value or more to make liquid refrigerant and lubricating oil not be separated into two layers
Agent ".
Claims (13)
1. a kind of air conditioner by piping connection indoor unit and outdoor unit, and makes refrigerant circulation, the feature of the air conditioner exists
In,
Use individual R32 refrigerant or contains the mixed type refrigerant of the above R32 refrigerant of definite quality percentage as system
Cryogen,
Above-mentioned air conditioner has:
Compress the compressor of above-mentioned refrigerant；And
It is connected to the inflow side of above-mentioned compressor, for the liquid storage device of storing liquid refrigerant,
It is mixed that the promising lubricating oil for making the mixed liquor of liquid refrigerant and lubricating oil that two separate not occur is stored in above-mentioned liquid storage device
Conjunction rate is the refrigerant of specified value or more, and above-mentioned lubricating oil composite rate is lubricants capacity/amount of liquid refrigerant.
2. air conditioner according to claim 1, which is characterized in that
Lubricating oil to above-mentioned compressor supply to make the mixed liquor of liquid refrigerant and lubricating oil that two separate not occur mixes
Rate is the refrigerant of specified value or more.
3. air conditioner according to claim 2, which is characterized in that
Have liquid storage device, is connected to the inflow side of above-mentioned compressor, for the liquid storage device of storing liquid refrigerant,
The refrigerant of the lubricating oil composite rate of above-mentioned specified value or more is stored in above-mentioned liquid storage device.
4. air conditioner according to claim 1 or 3, which is characterized in that
Have oil eliminator, be connected to the compressor discharge side, will be separated from the oil in the refrigerant that above-mentioned compressor is discharged
And it is recovered to the suction side of above-mentioned compressor.
5. air conditioner according to claim 4, which is characterized in that
The supply fuel volume adjusting portion for having the flow for adjusting the lubricating oil recycled by above-mentioned oil eliminator and pressure.
6. air conditioner according to claim 5, which is characterized in that
Above-mentioned supply fuel volume adjusting portion will utilized and the fluid return rate of lubricating oil that above-mentioned liquid storage device is returned from above-mentioned oil eliminator
Be set as x, i.e. x=flow of lubrication/refrigerant total flow,
The ratio of the mixed liquor flowed from above-mentioned liquid storage device to above-mentioned compressor is set as R, i.e. R=(liquid refrigerant flow+profit
Oil flow)/refrigerant total flow, and
The cycling rate for being recycled and being carried out the lubricating oil of refrigerating cycle by above-mentioned oil eliminator is set as y, i.e., y=flow of lubrication/
When refrigerant total flow,
Formula x >=nR-y is set up.
7. air conditioner according to claim 1 or 3, which is characterized in that
Above-mentioned liquid storage apparatus is ready for use on the ingress pipe for importing gaseous refrigerant or lubricating oil and for that will be mixed with lubricating oil
Gaseous refrigerant is delivered to the delivery line of above-mentioned compressor,
Above-mentioned delivery line has the bending section of the U-shaped for the bottom side being located in above-mentioned liquid storage device,
Above-mentioned bending section has the first liquid return port and positioned at the position more upper than above-mentioned first liquid return port
Second liquid return port.
8. air conditioner according to any one of claim 1 to 3, which is characterized in that
The mix refrigerant containing the above R32 refrigerant of 70 mass percents is used as refrigerant.
9. air conditioner according to any one of claim 1 to 3, which is characterized in that
Above-mentioned lubricating oil composite rate is 40% or more.
10. air conditioner according to any one of claim 1 to 3, which is characterized in that
Above-mentioned lubricating oil composite rate is 50% or more.
11. air conditioner according to any one of claim 1 to 3, which is characterized in that
Have: being located at the outdoor heat exchanger of above-mentioned outdoor unit；
In the supercooling branch expansion valve that a part of liquid refrigerant branch that above-mentioned outdoor heat exchanger is condensed flows into；
Supercooling heat exchanger, make the above-mentioned a part of liquid refrigerant being depressurized in above-mentioned supercooling branch expansion valve with not
Other liquid refrigerants of branch carry out heat exchange；And
Return duct makes the above-mentioned a part of liquid refrigerant for having passed through above-mentioned supercooling heat exchanger return to above-mentioned outdoor unit
The suction side for the above-mentioned compressor having.
12. air conditioner according to claim 1, which is characterized in that
It is connected with more above-mentioned indoor units.
13. the air conditioner according to claim 2 or 12, which is characterized in that
It is connected with more above-mentioned outdoor units.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-244492 | 2012-11-06 | ||
| JP2012244492A JP5927633B2 (en) | 2012-11-06 | 2012-11-06 | Air conditioner |
| CN201310544957.8A CN103808070B (en) | 2012-11-06 | 2013-11-06 | Air conditioner |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310544957.8A Division CN103808070B (en) | 2012-11-06 | 2013-11-06 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106382768A CN106382768A (en) | 2017-02-08 |
| CN106382768B true CN106382768B (en) | 2019-07-30 |
Family
ID=49517438
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610757973.9A Active CN106382768B (en) | 2012-11-06 | 2013-11-06 | Air conditioner |
| CN201310544957.8A Active CN103808070B (en) | 2012-11-06 | 2013-11-06 | Air conditioner |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310544957.8A Active CN103808070B (en) | 2012-11-06 | 2013-11-06 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2728279B1 (en) |
| JP (1) | JP5927633B2 (en) |
| CN (2) | CN106382768B (en) |
| ES (1) | ES2661868T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160030998A (en) * | 2013-09-05 | 2016-03-21 | 도시바 캐리어 가부시키가이샤 | Compressor and refrigeration cycle device |
| JP6736910B2 (en) * | 2016-02-25 | 2020-08-05 | ダイキン工業株式会社 | Refrigeration equipment |
| JP2018194200A (en) * | 2017-05-15 | 2018-12-06 | パナソニックＩｐマネジメント株式会社 | Refrigeration cycle device and liquid circulation device provided with the same |
| US11162705B2 (en) | 2019-08-29 | 2021-11-02 | Hitachi-Johnson Controls Air Conditioning, Inc | Refrigeration cycle control |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586351A (en) * | 1984-05-18 | 1986-05-06 | Mitsubishi Denki Kabushiki Kaisha | Heat pump with multiple compressors |
| CN1134536A (en) * | 1994-11-30 | 1996-10-30 | 三洋电机株式会社 | Refrigerating apparatus |
| CN1366599A (en) * | 2000-02-16 | 2002-08-28 | 大金工业株式会社 | Freezer |
| CN1818514A (en) * | 2002-08-30 | 2006-08-16 | 三洋电机株式会社 | Compressor for refrigerant cycling device |
| CN102109239A (en) * | 2009-12-25 | 2011-06-29 | 三洋电机株式会社 | Refrigerating apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2967574B2 (en) * | 1990-11-16 | 1999-10-25 | 株式会社日立製作所 | Refrigeration equipment |
| JP3658993B2 (en) | 1998-05-13 | 2005-06-15 | 株式会社日立製作所 | Refrigerant compressor and refrigeration system |
| JP3956589B2 (en) | 1999-10-18 | 2007-08-08 | ダイキン工業株式会社 | Refrigeration equipment |
| JP4815656B2 (en) * | 2000-04-19 | 2011-11-16 | ダイキン工業株式会社 | Refrigeration equipment |
| JP4295530B2 (en) * | 2003-03-04 | 2009-07-15 | 東芝キヤリア株式会社 | Air conditioner |
| JP2005083704A (en) * | 2003-09-10 | 2005-03-31 | Mitsubishi Electric Corp | Refrigerating cycle and air conditioner |
| JP2011208860A (en) * | 2010-03-29 | 2011-10-20 | Hitachi Appliances Inc | Air conditioner |
-
2012
- 2012-11-06 JP JP2012244492A patent/JP5927633B2/en active Active
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2013
- 2013-11-06 ES ES13191783.3T patent/ES2661868T3/en active Active
- 2013-11-06 CN CN201610757973.9A patent/CN106382768B/en active Active
- 2013-11-06 EP EP13191783.3A patent/EP2728279B1/en active Active
- 2013-11-06 CN CN201310544957.8A patent/CN103808070B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586351A (en) * | 1984-05-18 | 1986-05-06 | Mitsubishi Denki Kabushiki Kaisha | Heat pump with multiple compressors |
| CN1134536A (en) * | 1994-11-30 | 1996-10-30 | 三洋电机株式会社 | Refrigerating apparatus |
| CN1366599A (en) * | 2000-02-16 | 2002-08-28 | 大金工业株式会社 | Freezer |
| CN1818514A (en) * | 2002-08-30 | 2006-08-16 | 三洋电机株式会社 | Compressor for refrigerant cycling device |
| CN102109239A (en) * | 2009-12-25 | 2011-06-29 | 三洋电机株式会社 | Refrigerating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2661868T3 (en) | 2018-04-04 |
| CN103808070B (en) | 2016-09-21 |
| JP5927633B2 (en) | 2016-06-01 |
| JP2014092339A (en) | 2014-05-19 |
| CN106382768A (en) | 2017-02-08 |
| EP2728279A1 (en) | 2014-05-07 |
| CN103808070A (en) | 2014-05-21 |
| EP2728279B1 (en) | 2018-01-10 |
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