CN1123745C - Air conditioning system and assembling method thereof - Google Patents
Air conditioning system and assembling method thereof Download PDFInfo
- Publication number
- CN1123745C CN1123745C CN 99106390 CN99106390A CN1123745C CN 1123745 C CN1123745 C CN 1123745C CN 99106390 CN99106390 CN 99106390 CN 99106390 A CN99106390 A CN 99106390A CN 1123745 C CN1123745 C CN 1123745C
- Authority
- CN
- China
- Prior art keywords
- compressor
- oil
- refrigeration agent
- conditioning system
- storage container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Lubricants (AREA)
- Compressor (AREA)
Abstract
The present invention introduces an air conditioning system and an assembling method thereof. A closed circuit refrigerating device of the air conditioning system comprises a compressor, a condenser, an evaporator and carbon hydrofluoride refrigerant; in order that lubricating oil can return to the compressor, the refrigerating device of the air conditioning system adopts the lubricating oil which is not dissolved in the carbon hydrofluoride, and specific weight of the lubricating oil is less than that of the carbon hydrofluoride. The method for assembling the air conditioning system comprises three steps: (1) the first kind of the lubricating oil which is not dissolved in the carbon hydrofluoride refrigerant is used as technology oil to be applied to each member of the compressor; (2) the first kind of the lubricating oil is stored in the casing of the compressor; (3) the refrigerating device is assembled in the air conditioning system.
Description
The application is that application number is 92112045.1 divides an application, and the applying date of this mother's case is on September 30th, 1992.
The present invention relates to use with fluorohydrocarbon and be the material of main component equipment such as refrigerating air conditioning device as refrigeration agent.
An example of the refrigeration plant that has earlier is shown in Figure 11.In the past, for example, shown in 621～626 pages of " friction scholar " the 35th volumes No. 9 (nineteen ninety), when using fluorohydrocarbon to be HFC134a refrigeration agent formation refrigeration plant, refrigeration agent is one of important characteristic with the mutual dissolubility of refrigerating machine oil, use be PA6 (polyethers) or ester series refrigerating machine oil.Figure 11 is to use the refrigeration plant of HFC134a refrigeration agent, the 1st, the compressor of compression refrigerant gas, the 2nd, condensation is from the condenser of the higher pressure refrigerant gas of compressor 1 discharge, the 3rd, capillary tube, the 4th, vaporizer, the 5th, have the liquid-storage container that volume of the cooling medium is adjusted function, the 6th, accumulate in the sliding parts that is used for lubricate compressors 1 in the compressor 1 and the refrigerating machine oil of seal compression chamber, be PAG6a or ester series refrigerating machine oil 6a.
The following describes the active situation of oil.Arranged into condenser 2 by the refrigeration agent after compressor 1 compression.Here, in using the compressor of high-pressure bottle for example, be used for the lubricant oil 6a of seal compression chamber or 6b and separate, have weight ratio with refrigeration agent to be about 0.5～1.0% oily 6a or 6b and discharged from compressor 1 with refrigeration agent with most of oily 6a or 6b in the compressor.Because oily 6a that discharges or 6b are with the organic mutual dissolubility of refrigeration agent, good fluidity can flow back in the compressor 1 by condenser 2, capillary tube 3, vaporizer 4, liquid-storage container 5.Therefore, lubricant oil 6 can not disappear from compressor 1, can carry out lubricated normally.In addition, in the so-called refrigeration agent state of rest that compressor 1 stops for a long time, also can suppress the refrigeration agent foaming.
The refrigeration plant of the HFC134a that has earlier constitutes in a manner described.The volume resistivity of polyethers 6a is 10
7～10
10Ω .cm, saturation moisture content is about 25000PPM, and the characteristic of ester series refrigerating machine oil is improved as 10 respectively
12～10
14Ω .cm and～1500PPM, the characteristic 10 of the refrigerating machine oil of using with existing CFC12
15Ω .cm compares with～500PPM, electrical insulating property and hygroscopicity are all very poor, and insulating properties relates to the problem of the long-term reliability of compressor, when the assembling part of handling compressor and the compressor that assembles, hygroscopicity is also required to reduce as far as possible saturation moisture content, and this is a pretty troublesome problem.
In addition, during the assembling refrigerator, shorten the time that refrigeration cycle is in open state, have a lot of problems on producing, the moisture content in entering refrigeration cycle can quicken to take place mud more for a long time, can stop up capillary tube after the moisture freezes, cause the problems such as bad of cooling off.
When the refrigeration plant hygroscopicity of the HFC134a that has earlier is higher, be difficult to prevent that compressor part from getting rusty, reaching expansion valve in the capillary tube of refrigerating air conditioning device can stop up owing to freezing, moisture can promote ester oil to add water decomposition and form sludge, and the polyethylene terephthalate that can promote the insulating material as motor to use adds water decomposition and forms sludge etc.In order to prevent these phenomenons, compare with the system that uses the CFC12 refrigeration agent, in manufacture process, must consider to remove the moisture of oil and the moisture in the refrigerant circuit, in addition, in order to improve the water absorbing capacity that is contained in the siccative in the refrigerant circuit, need to use the bigger siccative of water absorbing capacity that used than in the past.
The refrigeration system that has earlier, when compressor shuts down, liquid refrigerant is back in the compressor container from suction port, when restarting, lubricant oil in the compressor and liquid refrigerant are discharged refrigeration system from compressor together, because use is the little HFC134a refrigeration agent of intermiscibility, so, when the lubricant oil of discharging during greater than certain flow (two flow velocitys), just be difficult to reflux to compressor, take place easily because the lubricant oil deficiency causes compressor fault etc.
The present invention puts forward in order to address the above problem, by oiling on the electric wire of the motor used to compressor with sintered component immersion oil and the hygroscopicity that reduces the compressor assembly lube, can make production operation simple, and can constitute the good refrigeration plant of electrical insulating property, purpose is intended to obtain to guarantee in the vaporizer and the low temperature flow in the liquid-storage container, reduce thickness attached to oil film on the vaporizer internal face, prevent coolant compressor and refrigerating air conditioning device that rate of heat exchange reduces, in addition, also to obtain electrical insulating property and the hygroscopicity tool is good, refrigerating machine oil is not detained, the high refrigerating air conditioning devices such as refrigerator of reliability that can reflux to compressor really.
Coolant compressor of the present invention uses HFC134a as refrigeration agent, and the oil that uses when being used for oil that the parts to this compressor are coated with or compressor assembling is not have mutual deliquescent oil with refrigeration agent.
Refrigerator of the present invention, use HFC134a as refrigeration agent, have in the freeze cycle of compressor, vaporizer and liquid-storage container, use does not have the lubricant oil of mutual deliquescent oil as above-mentioned compressor with refrigeration agent, and have from the below and insert in the above-mentioned liquid-storage container, and the suction pipe arrangement that its top has the above-mentioned compressor of return port, the outlet end of above-mentioned vaporizer is connected with the top of above-mentioned liquid-storage container.
Refrigerating air conditioning device of the present invention uses fluorohydrocarbon as refrigeration agent, and using does not have the refrigerating machine oil of mutual deliquescent oil as compressor with refrigeration agent.
And refrigerating air conditioning device of the present invention, use fluorohydrocarbon as refrigeration agent, what the oil that uses when being used for oil that the parts to compressor are coated with and compressor assembling used is alkylbenzene or poly alpha olefin.
Refrigerating air conditioning device of the present invention also uses under the evaporating moisture of device oil viscosity less than the oil of 2000cst.
Refrigerating air conditioning device of the present invention also uses the compressor of high-pressure bottle type.
Refrigerating air conditioning device of the present invention also makes the refrigeration agent stream in the liquid-storage container flow from the top down, and insert in the liquid-storage container end of following side line.
Refrigerating air conditioning device of the present invention also between vaporizer and compressor, is provided with and prevents from the mechanism of compressor to vaporizer generation adverse current.
Refrigerating air conditioning device of the present invention also uses oil viscosity under the Environmental Conditions temperature of device less than the oil of 200cst.
Refrigeration system of the present invention in using with material the refrigeration system as refrigeration agent of fluorohydrocarbon as main component, is provided with open and close valve, and has the control gear of closing above-mentioned open and close valve when above-mentioned compressor shuts down between vaporizer and compressor.
The CFC12 refrigeration agent compressor peer-level that water control when this coolant compressor can make the compressor assembling reaches and has earlier.
The electrical insulating property of this refrigerator and hygroscopicity tool are good, and the oil return of compressor is functional.
The same ester oil of this refrigerating air conditioning device, PAG oil phase ratio can improve volume resistivity, reduce hygroscopicity, water control are reached and the equal level of refrigerating air conditioning device of the use CFC12 refrigeration agent that has earlier.
Water control when in addition, this refrigerating air conditioning device is assembled compressor can reach and the CFC12 refrigeration agent that has earlier with the equal level of compressor.
This refrigerating air conditioning device can be guaranteed in the vaporizer and the interior oily low temperature flow of liquid-storage container, reduce thickness attached to oil film on the vaporizer internal face, prevent that rate of heat exchange from reducing, thereby the cooling performance of device is reached and uses mutual deliquescent level equal when oily.
This refrigerating air conditioning device has mutual deliquescent oil the time to compare with use, can make volume of the cooling medium reduce the weight that is equivalent to enclose oil mass 10～20%.
This refrigerating air conditioning device can not make a large amount of oil accumulate in the liquid-storage container, and refrigerating machine oil is back in the compressor really, and simultaneously, the load condition variation according to device can store unnecessary refrigeration agent.
This refrigerating air conditioning device can prevent to cause that by sucking pipe arrangement arrival liquid-storage container and vaporizer the vaporizer equitemperature raises from the gas that high voltage terminal leaks, thereby can reduce the device power consumption when compressor shuts down.
This refrigerating air conditioning device can prevent that oil from stopping up capillary tube, constitutes the high device of reliability.
This refrigeration system is when compressor shuts down, and by closing the open and close valve that is located between vaporizer and the compressor, the lubricant oil that can make compressor container bottom is outflow system in a large number not, thereby can guarantee good lubricated of compressor.
Fig. 1 is the structural drawing that utilizes the refrigeration plant that the coolant compressor of one embodiment of the present of invention constitutes.
Fig. 2 is the oil viscosity of hard alkylbenzene oil and the relation curve of the temperature that vaporizer reaches.
Fig. 3 is the refrigerant circuit figure of the refrigerator of other embodiments of the invention.
Fig. 4 is the part detail drawing in the refrigerator refrigerant loop of other embodiments of the invention.
Fig. 5 is the structural drawing of other embodiments' of the present invention refrigerating air conditioning device.
Fig. 6 is the oil return time and the graph of a relation between the kinetic viscosity of oil under the ambient temperature of using of other embodiment's of the present invention refrigerating air conditioning device.
Fig. 7 be other embodiment of the present invention refrigerating air conditioning device the refrigeration cabinet temperature and under evaporating temperature oil kinetic viscosity between graph of a relation.
Fig. 8 is the circuit diagram of other embodiment's of the present invention refrigeration system.
Fig. 9 is the control action flow chart of other embodiment's of the present invention refrigeration system.
Figure 10 is the effluxion figure of the refrigeration system control action of the embodiment of the invention.
Figure 11 is the structural drawing with the refrigeration plant of the coolant compressor formation that has earlier.
1 compressor
4 vaporizers
5 liquid-storage containers
6 lubricant oil
The hard alkylbenzene oil of 6a
The hard alkylbenzene oil of 6b low viscosity
7 suck pipe arrangement
8 spill ports
11 seal containers
12 motor
13 insulation coating electric wires
16 cylinders
17 bearings
18 refrigeration agents
19 oil conservators
30 open and close valves
Embodiment 1:
Embodiments of the invention 1 are described with reference to the accompanying drawings.Among Fig. 1, the 11st, seal container, the 12nd, the motor of Driven Compressor, the 13rd, the insulation coating electric wire that motor 12 uses, 6a is the hard alkylbenzene oil that applies for thereby the slipping property that improves electric wire improves the coiling working efficiency, sintered components such as the cylinder 16 of formation pressing chamber and bearing 17 flood with hard alkylbenzene oil 6a, when the slide member of assembling compressor body, inject hard alkylbenzene oil 6a.
In addition, in the refrigeration plant of use HFC134a as refrigeration agent shown in Figure 1, use the refrigerating machine oil 6 of hard alkylbenzene oil 6a as compressor 1.
In addition, owing to use electrical insulating property (volume resistivity 10
15～10
16Ω .cm) good hard alkylbenzene oil is as refrigerating machine oil, so, for the processing of electric leakage, can take the measure the same with the device that uses the CFC12 refrigeration agent.
Embodiment 2:
The following describes embodiments of the invention 2.In the refrigeration plant of use HFC134a as refrigeration agent shown in Figure 1, use the lubricant oil 6 of the hard alkylbenzene oil 6b of low viscosity as compressor 1.The hard alkylbenzene oil 6b of this low viscosity uses the material lower than the viscosity of the hard alkylbenzene oil 6c that uses with the lubricant oil of compressor as CFC12 that has earlier to constitute, usually using in the refrigeration plants such as refrigerator of rotary compressor, the viscosity of oil 6c under 40 ℃ is about 32cst, and in vaporizer 4, consider to have dissolved into refrigeration agent, viscosity is about 1000～5000cst.Therefore, have same viscosity, under 40 ℃, should be 10～22cst in order to make the hard alkylbenzene oil 6d of the low viscosity that does not dissolve into HFC134a.Like this, if make the viscosity in the vaporizer 4 reach identical viscosity, the identical level in the time of can reaching the CFC12 refrigeration agent that has earlier with use of the oil slick thickness on the then mobile and vaporizer internal face.Fig. 2 be hard alkylbenzene oil (6a) in the time of 40 ℃ viscosity and the relation curve between the compressor of the refrigerator temperature that vaporizer 4 reaches when turning round continuously, viscosity was that the ester oil of 32cst is roughly the same when viscosity was the temperature that reaches of the oily 6d of 10cst and 40 ℃ in the time of 40 ℃, we can say that cooling performance is good.In addition, no matter the oil 6 of sliding parts has or not mutual dissolubility in the compressor 1, viscosity is all constant, but, since CFC12 to oil 6 permeability with compressor 1 in sliding parts and the vaporizer 4 permeability of CFC12 roughly the same, so if use above-mentioned light viscosity oil 6d under the condition of HFC134a, the lubricity that also can guarantee practical viscosity at sliding parts is identical level during with oily 6c with CFC12.
In addition, in embodiment 1, assembling is hard alkylbenzene oil 6a with oil, still, if manufacturing efficiency is not had any influence yet with the hard alkylbenzene oil 6b of low viscosity.
Embodiment 3:
Embodiments of the invention 3 are described with reference to the accompanying drawings.In Fig. 3 and Fig. 4, the 1st, the compressor of compression refrigerant gas, the 2nd, condensation is from the condenser of the higher pressure refrigerant gas of compressor 1 discharge, the 3rd, capillary tube, the 4th, vaporizer, the 5th, have the liquid-storage container that accumulates refrigerant liquid that volume of the cooling medium is adjusted function, the 6th, be stored in the sliding parts that is used for lubricate compressors 1 in the compressor 1 and the lubricant oil of seal compression chamber, use be and HFC134a deliquescent hard alkylbenzene oil 6a mutually not.In addition, the outlet end of vaporizer 4 is connected with the top of above-mentioned liquid-storage container 5, and its below is connected with the suction side of compressor 1, sucks pipe arrangement 7 and inserts in the above-mentioned liquid-storage container 5, extends upward, and its sidewall is provided with spill port 8.This spill port 8 is located at the position of above-mentioned suction pipe arrangement 7 than the top.
If as liquid-storage container 5 is arranged earlier, the outlet end of vaporizer 4 is connected with the below of liquid-storage container 5, and the suction side of compressor 1 is connected with its top, when the pipe arrangement that above lower direction, inserts in the liquid-storage container 5, forming refrigerant liquid delay part, though use separately and refrigeration agent HFC134a when mutual deliquescent ester oil is arranged, after refrigeration agent and oil dissolving, can not be trapped in the liquid-storage container 5, can be back in the compressor 1, but, use and the not mutual deliquescent hard alkylbenzene oil 6a of HFC134a, during 6b, oil can be trapped in the liquid-storage container 5, and the oil mass in the compressor 1 is reduced, and influences the lubrication and the sealing of sliding parts.Turn upside down by pipe arrangement connecting direction liquid-storage container 5, the outlet end of vaporizer 4 is connected with the top, the suction side of compressor 1 is connected with the below, at the sidewall that above lower direction, inserts the suction pipe arrangement 7 in the liquid-storage container 5 spill port 8 is set, even refrigeration agent does not dissolve, oil also can be back in the compressor 1, can not be trapped in the liquid-storage container 5.
In addition, spill port 8 is arranged on the relatively position of top of pipe arrangement 7 of continuing of inserting in the liquid-storage container 5, the same with above-mentioned explanation, proportion oily 6a, the 6b lighter than HFC134a refrigeration agent are back in the compressor 1.Refrigeration agent accumulates in the oil conservator 5 of spill port 8 belows, the function of adjusting in the time of can satisfying the load change of refrigerator like this, thus can effectively cool off.
Because a HFC134a refrigeration agent does not have mutual dissolubility, so the refrigeration agent absolute magnitude and the variable quantity that dissolve in the oil 6 in compressor 1 that the environment temperature of refrigerator and the variation of loading condiction cause are all very little.Like this, not only can make the liquid-storage container 5 of adjusting above-mentioned volume of the cooling medium realize miniaturizations, and refrigeration agent surplus or deficiency can not occur and cause unsuitable cooling, efficient is good.When using the rotary compressor of high-pressure bottle type, can make the volume of the cooling medium of inclosure reduce the amount of the oil mass 10%～20% that is equivalent to enclose.
Embodiment 4:
Here, for the example of HFC134a and hard alkylbenzene oil, still,, also can bring into play same effect for not having the combination of other oil of intermiscibility with refrigeration agent.
Embodiment 5:
The following describes embodiments of the invention 5.Use hard alkylbenzene oil as refrigerator oil.Viscosity for example experiment showed, less than 200cst, with the oil that refrigeration agent mixes under the ambient temperature of using by adopting, though the oil capillaceous that occurs stopping up refrigerator to a large amount of situations about flowing out in loop, the oil into compressor that also can reflux.Fig. 5 is an experimental setup of checking above-mentioned phenomenon, and Fig. 6 is a check result.The device of Fig. 5 be oil conservator 19 be located at the refrigerant circuit of refrigerator high voltage terminal, make and become the state that does not have oil in the compressor 1, in compressor 1, be in static state from HFC134a refrigeration agent 18 and begin the device that starting compressor 1 is checked the active situation of oil.After the starting, refrigeration agent 18 is compressed, and head pressure rises gradually.But oil viscosity is high more, and ambient temperature is low more, and then oil is poor more to the situation that compressor 1 refluxes, as shown in Figure 6.As shown in Figure 6, if oil viscosity is greater than 200cst at ambient temperature, capillary tube 3 will be stopped up by oil, not reflux to oil at least 240 minutes.If viscosity is less than 200cst, then oil just refluxes after tens of minutes, so, oil can not take place stop up phenomenon capillaceous.Therefore, under the ambient temperature that device uses, make oil viscosity, under ultimate state, also can constitute the device that oil refluxes really less than 200cst.
Embodiment 6:
By using under the evaporating temperature of device viscosity, the cooling performance of device is reached and uses mutual deliquescent level equal when oily less than the oil of 2000cst.Fig. 7 be refrigerator when turning round continuously cooling performance and the relation curve of oil viscosity.As shown in Figure 7, under evaporating temperature,, then can make the temperature that reaches and use level roughly the same when deliquescent ester oil is arranged if oil viscosity is less than 2000cst.
Embodiment 7:
When using the compressor of high-pressure bottle type, because oil of the present invention and refrigeration agent do not have mutual dissolubility, so, because of the variation of ambient temperature of device causes that the volume of the cooling medium that oil 6 dissolves in compressor 1 changes the phenomenon minimizing that lack of refrigerant or refrigeration agent surplus take place.In addition, can reduce that part of suitable volume of the cooling medium in the insoluble oil-feed 6 with refrigeration agent.Particularly, promptly be to compare when intermiscibility oily being arranged with use, can reduce and the suitable volume of the cooling medium of 10%～20% weight of enclosing oil mass.
Embodiment 8:
The top of above-mentioned liquid-storage container 5 is connected with the outlet end of vaporizer 4, and the below is connected with the suction side of compressor 1, sucks pipe arrangement 7 and inserts in the above-mentioned liquid-storage container 5, extends upward, makes at liquid-storage container 5 inner refrigerants stream and flows from the top down.
As the liquid-storage container 5 that has earlier, the below of liquid-storage container 5 is connected with the outlet end of vaporizer 4, the below is connected with the suction side of compressor 1, when the pipe arrangement that above lower direction, inserts in the liquid-storage container 5, forming refrigeration agent delay part, there is not the oil of intermiscibility with refrigeration agent HFC134a, for example hard alkylbenzene oil will be detained, oil mass in the compressor 1 is reduced, influence the lubrication and the sealing of slide member, but, by the liquid flow path direction in the liquid-storage container 5 is turned upside down, the refrigerating machine oil that proportion is lighter than refrigeration agent will float over liquid-storage container 5 interior positions than the top, in running, refrigerating machine oil can reflux to compressor 1 really, and can not be trapped in the liquid-storage container 5.
Embodiment 9:
The 20th, check valve is arranged between compressor 1 and the vaporizer 4.Because refrigeration agent separates with refrigerating machine oil, so the independent viscosity of refrigeration agent is less than refrigeration agent and refrigerating machine oil and is dissolved in together viscosity.Therefore, during compressor 1 shut down, the viscosity independent owing to refrigeration agent was low, so good fluidity will increase to the volume of the cooling medium that adverse current takes place vaporizer 4 by the gap of sliding parts in the compressor 1, as a result, the temperature of vaporizer 4 rises, and the electric energy of refrigeration plant consumption will increase.Therefore, by between compressor 1 and vaporizer 4 check valve 20 being set, just can suppress refrigeration agent generation check stream, the temperature of restrain evaporation device 4 rises.In addition, the mechanism that prevents adverse current with same work also can be set and replace check valve 20.
Embodiment 10:
In the above-described embodiments, provided and used the example of hard alkylbenzene oil 6a as refrigerating machine oil 6, but, be used alone or as a mixture refrigerating machine oils such as the good soft alkylbenzene oil of low temperature flow, poly alpha olefin, paraffine crude oil, naphthenic base crude, also can obtain same effect.
Embodiment 11:
The refrigerating machine oil of the foregoing description does not use additive, also can satisfy as the desired performance of refrigerator oil, but, also with the raising thermostability agent of adding 0.2～5% heavy amount and the additives such as defoamer of 0.001-0.1% weight, can further improve the performance of refrigerating machine oils such as antifriction loss, anti-loading and thermostability by individually or simultaneously.As antioxidant, antioxidants such as hindered phenol system, amine system, sulphur system are arranged, for example, 2,6 '-di-tert-butyl-4-methy phenol, 4,4 '-di-2-ethylhexylphosphine oxide (2,6 '-di-tert-butylphenol), 2,2 '-thiobis (4-methyl-6-tert butyl phenol), trimethyl quinol, P, P '-dioctyl diphenylamine, 3,7 '-dioctyl phenthazine, alkyl phenthazine-1-carboxylate, phenyl-2-naphthylamines, 2,6 '-di-t-butyl-2-dimethyl-P-cresols, 5-ethyl-10,10 '-diphenyl Fei Nazhalin, alkyl disulfide etc.; Extreme pressure additive base-10,10 '-diphenyl Fei Nazhalin, alkyl disulfide etc.; Extreme pressure additive and anti-abrasion agent have phosphate ester, phosphite, alkyl or allyl disulfide substituted phosphate, halogenated hydrocarbon, halogenated carboxylic acid, dialkyl or diallyl disulfide for phosphate metal salt, dialkyldithiocarbamates slaine, contain the compound of oil-soluble molybdenum sulfide etc.; Improve the thermostability agent epoxide is arranged; Defoamer has dimethicone, carboxylic metallic salt etc.
Embodiment 12:
Below with reference to Fig. 8 embodiments of the invention 12 are described.In Fig. 8, the 1st, the compressor of compressed refrigerant, the 2nd, condenser, the 3rd, throttle mechanism, the 4th, vaporizer is provided with open and close valve 30 between vaporizer 4 and compressor 1.
Below, according to its action of control action flowchart text of refrigeration system shown in Figure 9.Send the instruction that compressor 1 shuts down at 43 steps,, after compressor 1 stops, after the Δ t1 time, close open and close valve 30 at 44 steps.So-called Δ t1 is after the time, and height pressure reduction reaches compressor 1 and can begin time of starting again exactly.At 45 steps, when refrigeration system is sent the instruction of compressor starts running, open open and close valve 30 at 46 steps earlier, open open and close valve 30 after, after the Δ t2 time, turn round in 47 step compressor starts.Open open and close valve 30 by the Δ t2 time before compressor 1 running, the main compressing mechanism that can make refrigeration agent flow into compressor 1 is in the pressing chamber, turns round thereby vacuum takes place can prevent entry into service the time.
Figure 10 is that transverse axis is represented elapsed time with the control action flow process of the refrigeration system of Fig. 9 explanation, and the longitudinal axis is represented the running of compressor 1 and stopped the action of opening and closing with open and close valve 30.
The present invention has following described effect.
Coolant compressor of the present invention uses HFC134a as refrigeration agent, this compressor The oil of parts coating or compressor assembling do not have mutual dissolubility with oil, employing and refrigeration agent Oil, so when assembling high efficiency, the easy operational processes of parts.
This refrigerator use HFC134a as the refrigeration agent, have compressor, evaporimeter and In the kind of refrigeration cycle of reservoir, use and the agent of freezing does not have mutual deliquescent oil as upper State the lubricating oil of compressor, and have from the below insert in the above-mentioned reservoir, the top has back The suction pipe arrangement of the above-mentioned compressor of oilhole, the port of export of above-mentioned evaporimeter and above-mentioned liquid storage The top of device connects, so, can obtain electrical insulating property and the hygroscopicity tool is good, to compression The oil return performance of machine is good, the refrigerator that reliability is high.
This coolant compressor uses HFC134a as the refrigeration agent, uses and the agent of freezing There is not mutual deliquescent oil as the refrigerating machine oil of this compressor, so, can obtain The device that electrical insulating property is good.
This coolant compressor uses HFC134a as the refrigeration agent, uses hard alkylbenzene Oil is coated with application oil or compressor assembling oil as the parts of this compressor, so, assembling The efficient height, the easy operational processes of parts. With PAG oil phase ratio, the hygroscopicity of ester oil is little, Moisture is controlled the refrigerating air conditioning device of the use CFC12 refrigeration agent that can obtain and have earlier Identical level.
This refrigerating air conditioning device uses under the evaporation temperature of device viscosity less than 2000cst Oil, so, can guarantee in evaporimeter and reservoir in the low temperature flow of oil, Reduce to be attached to the oil film thickness on the evaporimeter internal face, prevent that rate of heat exchange from reducing, from And the device cooling performance is reached and use equal level of mutual deliquescent when oil.
This refrigerating air conditioning device uses the compressor of high-pressure bottle type, so and use have The situation of mutual deliquescent oil is compared, and can reduce and enclose 10～20% of oil amount The refrigerant amount that weight is suitable.
This refrigerating air conditioning device makes the refrigerant liquid stream in the reservoir flow from the top down downside Insert in the reservoir end of pipe arrangement, so, can not accumulate a large amount of oil in the reservoir, Thereby can guarantee that refrigerating machine oil refluxes to compressor, simultaneously, can bearing according to device The lotus situation is stored superfluous refrigeration agent.
This refrigerating air conditioning device is provided with between evaporimeter and compressor and prevents from compressor To the mechanism of evaporimeter generation adverse current, so, when compressor shuts down, can prevent The gas that leaks from high-pressure side arrives reservoir and evaporimeter, causes steaming by sucking pipe arrangement Send out the unit temp risings such as device, so, the power consumption of device can be reduced.
This refrigerating air conditioning device adopts under the environment for use temperature of device viscosity less than 200 The oil of cst, so, can prevent that oil from stopping up phenomenon capillaceous, thereby can obtain The device that reliability is high.
This refrigeration system is being used with fluorohydrocarbon to the material of main component as the refrigeration agent In the kind of refrigeration cycle, between evaporimeter and compressor, be provided with open and close valve, and have above-mentioned When shutting down, compressor closes the control device of above-mentioned open and close valve, so, at compressor When shutting down, utilize the open and close valve agent that can prevent from freezing to flow into compressor from evaporimeter, Thereby can prevent that compressor from causing the bad phenomenon such as axle sintering because lubricating oil is not enough.
Claims (7)
1. an air-conditioning system has a closed-lorp refrigenation device, and described closed-lorp refrigenation device comprises a compressor, a condenser, vaporizer, a kind of refrigeration agent, a kind of lubricant oil, a liquid-storage container and a suction pipe;
The main component of described refrigeration agent is a hydrofluorocarbons;
Described lubricant oil is stored in the described compressor each movable part for lubricate compressors, and its proportion is less than refrigeration agent, and is insoluble in the described refrigeration agent;
The outlet of the described vaporizer of upper end portion tap of described liquid-storage container;
One end of described suction pipe inserts in the described liquid-storage container from bottom to top, the intake of the described compressor of another termination of described suction pipe;
Described suction pipe and described liquid-storage container insert between the aperture on the tube wall of part of described liquid-storage container and form the refrigeration agent pond with being located at described suction pipe in described liquid-storage container bottom, are in the described refrigeration agent and the described immiscible lubricant oil of two phase-separated state for storage;
It is characterized in that, described refrigeration plant dispose make described refrigeration agent and described lubricant oil in the course of the work from the upper end of described liquid-storage container through described suction pipe to dirty.
2. air-conditioning system as claimed in claim 1 is characterized in that, described refrigeration agent is insoluble under the operating temperature of described refrigeration plant in the described lubricant oil, and the proportion of described lubricant oil is less than described refrigeration agent.
3. air-conditioning system as claimed in claim 1 or 2 is characterized in that, described lubricant oil is alkylbenzene oil and poly-a-olefin oil.
4. air-conditioning system as claimed in claim 1 or 2 is characterized in that, the viscosity of described lubricant oil under the evaporating temperature of described air-conditioning system is equal to or less than 2000cst.
5. air-conditioning system as claimed in claim 1 or 2 is characterized in that, described lubricant oil viscosity at ambient temperature is equal to or less than 200cst.
6. air-conditioning system as claimed in claim 1 or 2 is characterized in that, described compressor is the unloading type compressor, keeps pressure in its housing at exhaust side.
7. air-conditioning system as claimed in claim 1 or 2 is characterized in that, it also has a backflow preventer, between described compressor and described vaporizer, for the backflow that prevents from described compressor to described vaporizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99106390 CN1123745C (en) | 1999-05-08 | 1999-05-08 | Air conditioning system and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99106390 CN1123745C (en) | 1999-05-08 | 1999-05-08 | Air conditioning system and assembling method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92112045 Division CN1070281C (en) | 1992-09-30 | 1992-09-30 | Refrigerant compressor, refrigerator, refrigerating air conditioner and refrigerating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1238444A CN1238444A (en) | 1999-12-15 |
| CN1123745C true CN1123745C (en) | 2003-10-08 |
Family
ID=5272383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99106390 Expired - Lifetime CN1123745C (en) | 1999-05-08 | 1999-05-08 | Air conditioning system and assembling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1123745C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009091403A1 (en) * | 2008-01-17 | 2009-07-23 | Carrier Corporation | Refrigerant vapor compression system with lubricant cooler |
| DE102014006965A1 (en) * | 2014-05-14 | 2015-11-19 | Gea Bock Gmbh | Bus air conditioning, and method for producing the same |
-
1999
- 1999-05-08 CN CN 99106390 patent/CN1123745C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1238444A (en) | 1999-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6189322B1 (en) | Refrigerant-circulating system, and refrigerant compressor and refrigeration cycle employing the refrigerant compressor | |
| JP2803451B2 (en) | Refrigerant compressor, refrigerator, refrigerating air conditioner, and method of assembling refrigerant compressor | |
| US6427479B1 (en) | Refrigerating device utilizing carbon dioxide as a refrigerant | |
| EP1818387B1 (en) | Refrigerator oil composition | |
| EP0738859B1 (en) | Refrigeration system using hydrofluorocarbon refrigerant | |
| CN1837618A (en) | Hermetic type scroll compressor and refrigerating and air-conditioning apparatus | |
| CN1129755C (en) | Refrigerating cycle | |
| CN1070281C (en) | Refrigerant compressor, refrigerator, refrigerating air conditioner and refrigerating system | |
| CN1714241A (en) | Refrigerating system having reciprocating compressor | |
| CN1123745C (en) | Air conditioning system and assembling method thereof | |
| CN1125960C (en) | Refrigerator and assembling method thereof | |
| CN1238442A (en) | Compressor for closed-lorp refrigenation device and assembling method thereof | |
| JP2021073404A (en) | Hermetic refrigerant compressor and freezing/refrigerating device using the same | |
| KR0137844B1 (en) | Refrigerant circulation system | |
| US5419144A (en) | Refrigeration device using hydrofluorocarbon refrigerant | |
| EP2024468A1 (en) | Hermetic compressor and refrigeration system | |
| JP2021080926A (en) | Hermetic refrigerant compressor and freezing device using the same | |
| JPH07208819A (en) | Refrigerant circulating system | |
| JP2021080925A (en) | Hermetic refrigerant compressor and freezing/refrigerating device using the same | |
| JP2803625B2 (en) | Refrigerant compressor, refrigerator and air conditioner | |
| JP2017089982A (en) | Freezer | |
| JP2001255030A (en) | Freezing apparatus | |
| KR970007038B1 (en) | Method of assembly of refrigeration device | |
| KR0129466B1 (en) | Refrigerator device using hydrofluorocarbon refrigerator | |
| WO2021106903A1 (en) | Hermetic refrigerant compressor and freezing/refrigerating apparatus in which same is used |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120930 Granted publication date: 20031008 |