KR101898994B1 - Air conditioner having refrigerant booster - Google Patents

Air conditioner having refrigerant booster Download PDF

Info

Publication number
KR101898994B1
KR101898994B1 KR1020150061081A KR20150061081A KR101898994B1 KR 101898994 B1 KR101898994 B1 KR 101898994B1 KR 1020150061081 A KR1020150061081 A KR 1020150061081A KR 20150061081 A KR20150061081 A KR 20150061081A KR 101898994 B1 KR101898994 B1 KR 101898994B1
Authority
KR
South Korea
Prior art keywords
refrigerant
booster
condenser
receiver
inclined surface
Prior art date
Application number
KR1020150061081A
Other languages
Korean (ko)
Other versions
KR20160129259A (en
Inventor
박윤우
Original Assignee
(주)다해에너지세이빙
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by (주)다해에너지세이빙 filed Critical (주)다해에너지세이빙
Priority to KR1020150061081A priority Critical patent/KR101898994B1/en
Publication of KR20160129259A publication Critical patent/KR20160129259A/en
Application granted granted Critical
Publication of KR101898994B1 publication Critical patent/KR101898994B1/en

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/06Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
    • F25B41/062
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2341/00Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06Details of flow restrictors or expansion valves
    • F25B2341/063Feed forward expansion valves

Abstract

The present invention relates to a cooling device provided with a refrigerant booster, and is equipped with a refrigerant booster installed in a rear stage of a condenser to instantaneously increase the pressure of the refrigerant flowing through the end of the booster structure, So that the expansion coefficient is increased and the cooling efficiency is increased.
According to the present invention, the refrigerant having passed through the condensation accelerator formed with the inclined surfaces at the ends thereof and having a plurality of discharge holes dispersed therein can easily liquefy the refrigerant due to an increase in the latent heat energy, and even under the condensing condition deteriorated due to the long- As a result, the cooling efficiency is improved. In particular, the refrigerant discharged through the inclined surface is advantageous in that the condensation is performed faster by utilizing the concentration phenomenon of the internal pressure.

Figure R1020150061081

Description

[0001] Air conditioner having refrigerant booster [0002]

The present invention relates to a cooling device provided with a refrigerant booster, and more particularly, to a refrigerant booster equipped with a refrigerant booster installed in a rear stage of a condenser to instantaneously increase a pressure of circulation through a through- And the cooling efficiency of the refrigerating booster is increased by increasing the expansion coefficient of the refrigerating booster.

As is well known, a general air conditioner is a well-known apparatus in which a refrigeration cycle is operated, and is a device that performs heat exchange by circulating a refrigerant by repeating four cycles of evaporation, compression, condensation, and expansion.

It is needless to say that the refrigerant is phase-changed while repeating the gas state and the liquid state for each cycle, but the entire refrigerant actually flowing does not change to the gas state or the liquid state but also exists in the mixed state of the liquid state and the vapor state. When the refrigeration cycle is operated in reverse, it becomes a heat pump, and the principle is the same principle as the cooling apparatus.

Efforts to increase its thermal efficiency in this refrigeration cycle have been and continue to be ongoing. For example, in order to increase the efficiency of the heat exchanger, a plurality of fins are installed on the outer surface of the refrigerant pipe in a heat exchanger having a simple shape of refrigerant tube, thereby generating a heat exchanger that maximizes the contact area with the outside air, come. This effort to increase the thermal efficiency is now almost reached the limit.

The performance of the air conditioner decreases with time as the cooling efficiency decreases due to the heat exchanger contamination, the compression loss due to the compressor wear, and the oil film and carbonized sludge due to the refrigerant flowing along the system.

Therefore, it becomes difficult to ensure the supercooling degree in the condenser. When the refrigerant which has not sufficiently liquefied progresses, the gas introduced together with the refrigerant interferes with the evaporation of the liquid, so that the expansion coefficient (temperature drop) The vicious cycle in which the ability drops again is repeated.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances of the prior art described above, and it is an object of the present invention to provide a refrigerant booster installed in a rear end stage of a condenser and having a refrigerant booster which instantaneously increases a pressure flowing through a terminal- And an object of the present invention is to provide a cooling device provided with a refrigerant booster which is effectively promoted to increase the expansion coefficient and increase the cooling efficiency.

In order to achieve the above object, according to a preferred embodiment of the present invention, there is provided a refrigerator comprising: a compressor (4) for compressing circulated refrigerant to a high temperature; A condenser (6) connected to the compressor (4) for liquefying the refrigerant transferred from the compressor (4); A receiver (10) for storing liquid refrigerant passing through the condenser (6); An expansion valve (12) connected to the receiver (10) to expand the refrigerant transferred from the receiver (10) to lower the temperature of the refrigerant; And an evaporator (14) connected to the expansion valve (12) and lowering the room temperature while evaporating the refrigerant transferred from the expansion valve (12), characterized in that the condenser (6) and the expansion valve An input tube 16 into which the refrigerant flows; An output tube (18) having one end connected to the outer peripheral edge of the input tube (16) and having an inner diameter expanded from the input tube (16) and outputting refrigerant to the other end; One end of which is connected to the inner periphery of the end of the input tube 16 and whose inner diameter is smaller than the input tube 16 and the refrigerant is discharged to the inside of the output tube 18 through the other end thereof, A refrigerant booster (8) comprising a booster tube (88) formed with a sloping surface and a plurality of discharge holes (86) formed on an inclined surface thereof is provided.

Preferably, the booster pipe 88 is formed with a bent portion 84 whose one end is bent perpendicularly to the inner periphery of the input pipe 16.

Preferably, the inclined surface formed at the other end of the booster pipe 88 is a surface where the pressure of the lower end 88a of the inclined surface is higher than the upper inclined surface 88b of the inner inclined surface.

Preferably, the refrigerant booster (8) is installed between the condenser (6) and the receiver (10).

Preferably, the refrigerant booster 8 is disposed between the condenser 6 and the auxiliary condenser 22 where the other end of the condenser 6 is branched and performs additional condensation. Device is provided.

Preferably, the refrigerant booster 8 includes an auxiliary condenser 22 formed between the receiver 10 and the expansion valve 12 to perform additional condensation, and an auxiliary condenser 22 disposed between the receiver 12 and the expansion valve 12 A refrigerant booster is provided.

Preferably, the discharge holes 86 are spaced apart from each other by a plurality of spaced apart portions and are arranged in a ring-like shape.

The cooling device having the refrigerant booster according to the present invention has an inclined surface at the end and a plurality of discharge holes are dispersedly formed and the refrigerant having passed through the condensation promoter has latent heat energy increased to facilitate liquefaction of the refrigerant, The cooling efficiency is improved. In particular, the refrigerant discharged through the inclined surface is advantageous in that the complete condensation is performed faster by utilizing the concentration phenomenon of the internal pressure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural view showing a structure of a cooling apparatus provided with a refrigerant booster according to a first embodiment of the present invention;
FIGS. 2A and 2B are views showing the construction of a refrigerant booster included in a cooling apparatus having a refrigerant booster according to an embodiment of the present invention;
FIG. 3 is a structural view illustrating a structure of a cooling apparatus having a refrigerant booster according to a second embodiment of the present invention. FIG.
FIG. 4 is a structural view showing a structure of a cooling apparatus having a refrigerant booster according to a third embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a structural view showing a structure of a cooling device provided with a refrigerant booster according to a first embodiment of the present invention. FIGS. 2a and 2b are views showing refrigerant And Fig.

The cooling device 2 equipped with the refrigerant booster according to the first embodiment of the present invention is installed in the rear stage of the condenser and changes the distribution diameter and the pressure distributed through the terminal booster structure instantaneously So that the refrigerant is completely liquefied effectively, thereby increasing the expansion coefficient and increasing the cooling efficiency.

That is, the cooling device 2 equipped with the refrigerant booster according to the first embodiment of the present invention increases the pressure of the refrigerant passing through the condenser 6 to further increase the total condensation rate, thereby further increasing the liquefaction rate, Securing the degree of subcooling, thereby increasing the cooling capacity and securing a stable compression ratio.

Particularly, in the cooling apparatus 2 equipped with the refrigerant booster according to the first embodiment of the present invention, the high-temperature refrigerant passing through the condenser 6 through the vortex of the refrigerant through the refrigerant booster 8 is liable to be liquefied State.

More specifically, the cooling apparatus (2) provided with the refrigerant booster according to the first embodiment of the present invention includes a compressor (4) for compressing the circulating refrigerant to a high temperature; A condenser (6) connected to the compressor (4) for liquefying the refrigerant transferred from the compressor (4); A receiver (10) for storing liquid refrigerant passing through the condenser (6); An expansion valve (12) connected to the receiver (10) to expand the refrigerant transferred from the receiver (10) to lower the temperature of the refrigerant; And an evaporator (14) connected to the expansion valve (12) and lowering the room temperature while evaporating the refrigerant transferred from the expansion valve (12).

That is, the cooling apparatus 2 provided with the refrigerant booster according to the first embodiment of the present invention includes a refrigerant booster 8 for supplementally accelerating condensation. The refrigerant booster 8 is connected to the condenser 2, An input tube 16 mounted to the small section between the expansion valve 6 and the expansion valve 12 and through which the refrigerant flows; An output tube (18) having one end connected to the outer peripheral edge of the input tube (16) and having an inner diameter expanded from the input tube (16) and outputting refrigerant to the other end; One end of which is connected to the inner periphery of the end of the input tube 16 and whose inner diameter is smaller than the input tube 16 and the refrigerant is discharged to the inside of the output tube 18 through the other end thereof, And a pressure-rising pipe 88 having a plurality of discharge holes 86 formed on an inclined surface thereof.

More specifically, to describe a cooling device 2 having a refrigerant booster according to a first embodiment of the present invention, a general basic cooling cycle will be described below.

First, the low-temperature, low-pressure condensed refrigerant absorbs heat H from the outside by the evaporator 14, and then exits the evaporator 14. At this time, the refrigerant changes into the superheated refrigerant of low temperature and low pressure. Then, the refrigerant passes through the compressor (4) and is converted into a high-temperature high-pressure gas.

The high temperature and high pressure gas discharges the heat amount H corresponding to the sum of the freezing heat amount of the evaporator 14 and the heat amount corresponding to the compression energy of the compressor 4 from the condenser 6 to the outside and becomes the room temperature high pressure liquid refrigerant. The refrigerant is then converted by the expansion valve (12) into low temperature and low pressure vapor refrigerant. The cooling is continued by the circulation of the refrigerant.

Here, the flow and conditions of the refrigerant before and after the condenser 6 will be described in more detail. The refrigerant flowing from the compressor (4) to the condenser (6) is in a state of high temperature and high pressure refrigerant gas. Such high temperature and high pressure refrigerant gas is cooled in the outside of the duct by the outside air or the coolant, However, when the total amount of the refrigerant heat of the evaporator 14 and the heat of compression of the compressor 4 is not completely discharged to the outside, the vicinity of the inner wall surface of the duct of the condenser 6 is not a liquid phase but a liquid-gas phase mixed state .

When the mixed refrigerant flows inside the duct, the liquid refrigerant flows along the central portion of the duct, and the gaseous refrigerant flows along the periphery of the duct. If the refrigerant in such a mixed state is circulated in a state where the refrigerant is not condensed, the mixed refrigerant can not respond to the mixed refrigerant depending on the capability of the compressor 4, so that the performance can not be exerted at all.

For this reason, the condensation of the refrigerant into the liquid phase is a very important factor.

In the refrigerant booster (8) included in the present invention, the refrigerant that is less condensed in the condenser (6) is transferred to the expansion valve (12), thereby preventing the fouling phenomenon from occurring in the transfer tube The flow of the refrigerant conveyed by the pressure is blocked to make the shock wave and the gas and the liquefied refrigerant are mixed by the shock wave.

That is, in the cooling device 2 equipped with the refrigerant booster according to the first embodiment of the present invention, the refrigerant conveyed to the rear end of the condenser 6 meets the refrigerant booster 8 that artificially blocks the flow of the refrigerant, Thereby increasing the degree of subcooling and promoting liquefaction. The artificial shut-off structure of the refrigerant booster 8 temporarily increases the pressure of the refrigerant, but the refrigerant passing through the narrow and flat discharge hole 86 in order to relieve the increased refrigerant pressure through the narrow discharge hole 86, The speed is increased.

According to a known physical law, when the refrigerant transfer rate is increased, the pressure is temporarily lowered, and the refrigerant having passed through the discharge hole 86 is recovered to the previous pressure after escaping to a larger space, thereby minimizing the loss of pressure .

That is, the refrigerant that has passed through the refrigerant booster 8 is changed into a condition to be liquefied.

In addition, the refrigerant injected through the refrigerant booster 8 included in the present invention increases the latent heat to increase the heat transfer coefficient, and the latent heat energy generated when the generated latent heat steam is separated from the condensed liquid can be used for the supercooling. Therefore, it is possible to stably complete condensation even under poor condensation conditions, thereby making it possible to improve the cooling efficiency.

For this purpose, the booster pipe 88 is formed with a bent portion 84 whose one end is bent perpendicularly to the inner circumference of the input pipe 16, and the inclined surface formed at the other end of the booster pipe 88 The pressure of the lower end portion 88a of the inclined surface is higher than that of the upper end portion 88b of the inner inclined surface.

Further, the discharge holes 86 are spaced apart from each other by a plurality of spaced apart portions and arranged in a ring shape.

The structural refrigerant cut-off structure of the refrigerant booster 8 temporarily increases the pressure of the refrigerant but changes the flow of the narrow and porous liquid into a spiral shape through the discharge hole 86 perforated on the end slope of the booster pipe 88 And rapidly increases the discharge rate through the discharge hole 86 to relieve the increased pressure in the booster pipe 88. The refrigerant passes through the large space again, and then returns to the previous pressure, thereby minimizing the pressure loss.

The refrigerant booster 8 included in the cooling device 2 equipped with the refrigerant booster according to the first embodiment of the present invention is installed between the condenser 6 and the receiver 10. Therefore, the refrigerant transferred through the condenser 6 is liquefied in the refrigerant booster 8 in a supercooled state.

FIG. 3 is a structural view showing the structure of a cooling apparatus having a refrigerant booster according to a second embodiment of the present invention.

The cooling device 2 having the refrigerant booster according to the second embodiment of the present invention has a cooling structure slightly different from that of the second embodiment of the present invention, And an auxiliary condenser 22 for further promoting the liquefaction of the refrigerant is formed at the rear end.

More specifically, the auxiliary condenser 22 is a means for performing secondary condensation when the refrigerant that has passed through the condenser 6 is not completely liquefied. Preferably, And is configured to selectively pass through the condenser (22).

That is, the condenser 6 has a direct path directly connected to the receiver 10, and the path of the condenser 6 and the receiver 10 is branched to couple the auxiliary condenser 22, The other end of the auxiliary condenser 22 constitutes a detour path connected to the receiver.

At this time, since the auxiliary condenser 22 is selectively operated, a valve 20 is formed in the direct path, and a valve 20 is formed at both ends of the auxiliary condenser 22.

In particular, the present invention is characterized in that the refrigerant booster (8) comprises a subcooler (22) in which the other end of the condenser (6) branches and performs further condensation, and a condenser The refrigerant entering is increased, and the refrigerant having liquefied due to the pressure increase is passed through the auxiliary condenser 22 to be completely liquefied.

That is, some flashing is maximized while passing through the refrigerant booster (8), and the refrigerant passing through the auxiliary condenser (22) is completely liquefied.

FIG. 4 is a structural view showing a structure of a cooling apparatus having a refrigerant booster according to a third embodiment of the present invention.

A cooling device 2 having a refrigerant booster according to a third embodiment of the present invention includes an auxiliary condenser 22 formed between the receiver 10 and the expansion valve 12 to perform additional condensation And the refrigerant booster 8 is disposed between the receiver 10 and the auxiliary condenser 22 to condense the non-condensed refrigerant that has passed through the receiver 10 through the refrigerant booster 8 Further promote.

The refrigerant having passed through the refrigerant booster (8) is again passed through the auxiliary condenser (22) so that the refrigerant is completely liquefied.

Meanwhile, the cooling apparatus provided with the refrigerant booster according to the embodiment of the present invention is not limited to the above-described embodiment, but various modifications can be made without departing from the technical gist of the present invention.

4: compressor, 6: condenser,
8: refrigerant booster, 10: receiver,
12: expansion valve, 14: evaporator.

Claims (7)

A compressor (4) for compressing the circulating refrigerant to a high temperature; A condenser (6) connected to the compressor (4) for liquefying the refrigerant transferred from the compressor (4); A receiver (10) for storing liquid refrigerant passing through the condenser (6); An expansion valve (12) connected to the receiver (10) to expand the refrigerant transferred from the receiver (10) to lower the temperature of the refrigerant; And an evaporator (14) connected to the expansion valve (12) and lowering the room temperature while evaporating the refrigerant transferred from the expansion valve (12)
A refrigerant booster (8) is formed between the condenser (6) and the receiver (10);
The refrigerant booster (8) includes an input tube (16) into which refrigerant flows from the condenser (6);
An output tube (18) having one end connected to the outer peripheral edge of the input tube (16) and having an inner diameter expanded from the input tube (16) and outputting refrigerant to the other end;
One end of which is connected to the inner periphery of the end of the input tube 16 and whose inner diameter is smaller than the input tube 16 and the refrigerant is discharged to the inside of the output tube 18 through the other end thereof, A refrigerant booster (8) constituted by a pressure-rising pipe (88) for generating a slope and generating a vortex by forming a plurality of discharge holes (86) along the edge of the slope;
The other end of the booster pipe 88 is formed with an inclined surface in which the pressure of the lower end 88a of the inclined surface is higher than that of the upper inclined surface 88b of the inner inclined surface 88. The discharge holes 86 are spaced apart from each other by a predetermined distance, The annular shape is arranged in an annular shape;
The refrigerant booster 8 is connected to a refrigerant booster 8 through an auxiliary condenser 22 for branching the other end of the condenser 6 to perform additional condensation and a condenser 22 for cooling the refrigerant between the condenser 6 or the auxiliary condenser 22, And the refrigerant booster is installed in the refrigerant booster.
The method according to claim 1,
Wherein the booster pipe (88) is formed with a bent portion (84) whose one end is bent perpendicularly to the inner periphery of the input pipe (16).
delete delete delete delete delete
KR1020150061081A 2015-04-30 2015-04-30 Air conditioner having refrigerant booster KR101898994B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150061081A KR101898994B1 (en) 2015-04-30 2015-04-30 Air conditioner having refrigerant booster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150061081A KR101898994B1 (en) 2015-04-30 2015-04-30 Air conditioner having refrigerant booster

Publications (2)

Publication Number Publication Date
KR20160129259A KR20160129259A (en) 2016-11-09
KR101898994B1 true KR101898994B1 (en) 2018-09-14

Family

ID=57529439

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150061081A KR101898994B1 (en) 2015-04-30 2015-04-30 Air conditioner having refrigerant booster

Country Status (1)

Country Link
KR (1) KR101898994B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102082607B1 (en) 2019-08-08 2020-02-26 (주)코리아스타 refrigerant pressure transmitter of industrial condenser
KR20210017988A (en) 2019-08-08 2021-02-17 (주)코리아스타 refrigerant pressure transmitter of industrial condenser
KR20210017989A (en) 2019-08-08 2021-02-17 (주)코리아스타 refrigerant pressure transmitter of industrial condenser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200251008Y1 (en) 1997-11-11 2001-12-28 구자홍 Refrigeration cycle device for refrigerator
JP4659066B2 (en) 2008-05-26 2011-03-30 三菱電機株式会社 Channel device
KR101450648B1 (en) * 2013-08-08 2014-10-15 주식회사 모레코 Promoting apparatus for condenser of Air conditioner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174469A (en) * 1984-02-21 1985-09-07 Toshiba Kk Refrigerator
JP2604926B2 (en) * 1991-08-22 1997-04-30 松下冷機株式会社 Capillary tubes and heat exchangers with capillary tubes
KR101612365B1 (en) * 2010-08-31 2016-04-14 현대자동차주식회사 Structure of condenser for automobile air-conditioning apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200251008Y1 (en) 1997-11-11 2001-12-28 구자홍 Refrigeration cycle device for refrigerator
JP4659066B2 (en) 2008-05-26 2011-03-30 三菱電機株式会社 Channel device
KR101450648B1 (en) * 2013-08-08 2014-10-15 주식회사 모레코 Promoting apparatus for condenser of Air conditioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102082607B1 (en) 2019-08-08 2020-02-26 (주)코리아스타 refrigerant pressure transmitter of industrial condenser
KR20210017988A (en) 2019-08-08 2021-02-17 (주)코리아스타 refrigerant pressure transmitter of industrial condenser
KR20210017989A (en) 2019-08-08 2021-02-17 (주)코리아스타 refrigerant pressure transmitter of industrial condenser

Also Published As

Publication number Publication date
KR20160129259A (en) 2016-11-09

Similar Documents

Publication Publication Date Title
CN102080903A (en) Refrigerating apparatus
KR101898994B1 (en) Air conditioner having refrigerant booster
JP2008281326A (en) Refrigerating unit and heat exchanger used for the refrigerating unit
EP1930669B1 (en) Refrigeration system
WO2002029337A1 (en) Cryogenic refrigerating system
KR101221368B1 (en) Extremely Low Temperature Refrigerative Apparatus
KR102009751B1 (en) Refrigeration Equipment using Air cooling type Condenser and Supercooling of Refrigerant
JP6821321B2 (en) Condenser, turbo refrigeration system equipped with this
TWI571606B (en) A refrigeration unit using a triple tube heat exchanger
CN209392767U (en) With the indirect condensing formula petroleum vapor recovery unit from the function that defrosts
JP2012163243A (en) Refrigerator
CN103175323B (en) Refrigerating plant using ternary pipe-type heat exchanger
EP0524197A1 (en) Apparatus for expanding the temperature glide of a non-azeotropic working fluid mixture in a vapor compression cycle.
JP2014132217A (en) Refrigeration device using triple tube heat exchanger
JP2008089252A (en) Cooling apparatus
KR102074695B1 (en) Cooling system for vehicle
CN106989455A (en) The air handling system that a kind of achievable fresh water is reclaimed
KR101870672B1 (en) smart Air conditioner control apparatus
KR101323527B1 (en) Air conditioner
KR101397944B1 (en) Cryocooler type freezer
KR102019925B1 (en) Refrigeration system for high efficiency
JP2003279197A (en) Heat exchanger for condensation of freezer-refrigerator system
CN207763300U (en) A kind of flat tube and one condenser body of oil-cooled tube
JP2009186074A (en) Refrigerating device
KR20060065029A (en) Cooling system having mid-cooler

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E902 Notification of reason for refusal
N231 Notification of change of applicant
AMND Amendment
E601 Decision to refuse application
AMND Amendment
J201 Request for trial against refusal decision
J301 Trial decision

Free format text: TRIAL NUMBER: 2017101001070; TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20170303

Effective date: 20180807

S901 Examination by remand of revocation
GRNO Decision to grant (after opposition)
GRNT Written decision to grant