KR20090045473A - A condenser - Google Patents

Abstract

The present invention relates to a condenser, which separates oil contained in a refrigerant flowing into the condenser, cools the liquid, and then flows back into the compressor, thereby improving the efficiency of the entire air conditioning system.

The condenser of the present invention comprises: a first header tank and a second header tank formed side by side at a predetermined distance; An inlet pipe formed in the first header tank or the second header tank, into which the refrigerant compressed by the compressor flows, and an outlet pipe through which the refrigerant is discharged; A baffle provided inside the first header tank and the second header tank to control a flow of a refrigerant; A plurality of tubes formed at both ends of the first header tank and the second header tank to form a refrigerant passage; A plurality of pins interposed between the tubes; And a receiver cooler provided at one side of the first header tank or the second header tank to separate a gaseous refrigerant from a liquid refrigerant. The condenser includes the first header tank or the second header tank. The oil separator is separated by the baffle and formed below the first region through which the refrigerant is first introduced through the inlet pipe to separate oil contained in the refrigerant flowing into the condenser, and through the oil separator. An oil cooling unit is formed, including a tube region communicating with the oil separation unit to lower the temperature by heat-exchanging the separated oil.

Accordingly, the condenser of the present invention can separate the oil contained in the refrigerant at the inlet side of the condenser to prevent the oil from flowing into the condenser and the evaporator to increase the heat exchange efficiency, and to cool the separated oil to flow into the compressor. By preventing the rise of the refrigerant temperature to improve the compression efficiency by the compressor and improve the durability of the compressor there is an advantage that can increase the overall air conditioning system efficiency.

Condenser, subcooling, refrigerant, condensation

Description

Condenser {A Condenser}

The present invention relates to a condenser, which separates oil contained in a refrigerant flowing into the condenser, cools the liquid, and then flows back into the compressor, thereby improving the efficiency of the entire air conditioning system.

A heat exchanger is a device that absorbs heat from one side and releases heat to the other between two environments with a difference in temperature. If a heat exchanger absorbs heat from the room and emits it to the outside, it is a cooling system. In this case it will act as a heating system. Basically, the heat exchanger is composed of an evaporator that absorbs heat from the surroundings, a compressor for compressing the heat exchange medium, a condenser that releases heat to the surroundings, and an expansion valve for expanding the heat exchange medium.

In the cooling device, an actual cooling action is caused by an evaporator in which the heat exchange medium in the liquid state absorbs the amount of heat as vaporized heat from the surroundings and vaporizes. The heat exchange medium in the gas state flowing from the evaporator to the compressor is compressed at high temperature and high pressure in the compressor, and liquefied heat is released to the surroundings in the process of liquefying the compressed gas heat exchange medium through the condenser. As the medium passes through the expansion valve again, it becomes a low-temperature and low-pressure wetted vapor state, and then flows into the evaporator to evaporate to form a cycle.

As described above, in the condenser, a refrigerant having a high temperature and high pressure gas flows in and condenses into a liquid state while releasing liquefied heat by heat exchange, and then discharged. The conventional condenser is shown in FIGS. The Ph plot of the condenser shown in FIG. 1B is shown in FIG. 1C.

1A and 1B, the condenser shown in FIG. 1A and 1B may be spaced apart from each other by a first header tank 10 and a second header tank 20; An inlet pipe 40 and an outlet pipe 50 provided in the second header tank 20 to allow refrigerant to be introduced or discharged; A baffle (30) provided in the first header tank (10) and the second header tank (20) to control the flow of the refrigerant; A plurality of tubes 60 fixed at both ends of the first header tank 10 and the second header tank 20 to form a refrigerant flow path; A plurality of fins 70 stacked between the tubes 60; And a gas-liquid separator 80 provided at one side of the first header tank 10 to separate a gaseous refrigerant and a liquid refrigerant, and by collecting only the liquid refrigerant in the gas-liquid separator 80, subcooling is performed. It is structured to lead.

Looking at the internal flow of the condenser as shown in Figure 1a and Figure 1b, the gaseous refrigerant compressed to high temperature and high pressure by the compressor flows into the inlet pipe of the first header tank and the second header by the baffle provided therein Is moved to the tank. At this time, since the condenser is already condensed in the gas phase and the liquid phase is in a mixed state, the gaseous refrigerant is generally moved upward and the liquid refrigerant is moved downward.

The refrigerant collected in the lower portion of the gas-liquid separator through the upper and lower regions respectively along the flow path formed by the baffle is mainly a liquid refrigerant is collected, and again the enthalpy of the refrigerant by the supercooling occurs while the liquid refrigerant passes through the subcooling region It can be lowered further to increase the cooling efficiency.

On the other hand, the compressor is configured to suck and compress the refrigerant passing through the evaporator to discharge to the condenser, the compressor is oil is contained in the refrigerant to operate smoothly, the oil acts as a lubricant of the compressor.

However, when the oil is introduced into a heat exchanger, an expansion device, or a pipe including a condenser, the oil adheres to the surface to reduce heat exchange efficiency, and the durability of the compressor is lowered because the oil is not sufficiently supplied to the compressor. There is a problem that the compression efficiency is lowered.

In addition, when the oil is included in the refrigerant and flows, the amount of oil acting as a lubricant of the compressor is reduced, so that when the amount of oil is increased in order to maintain the lubrication performance of the compressor, the oil has a characteristic of the oil having a refrigerant. As a change factor, there is a problem that the efficiency of the cooling system is reduced.

In order to solve the above problems, a condenser having an oil separator has been proposed, which is illustrated in FIG. 2A and the P-h diagram of the condenser illustrated in FIG. 2A is illustrated in FIG. 2B.

The condenser has a condenser as shown in Figures 1a and 1b, the condenser is further provided with an oil separator 90, the oil separator 90 is to separate the oil contained in the refrigerant By moving to the compressor (C) and allowing the oil separated refrigerant to flow into the condenser has the advantage that the original function of the oil can be maintained without affecting the configuration of other air conditioning system.

However, since the temperature of the oil separated through the oil separator is higher than the temperature of the refrigerant passing through the evaporator, when the oil and the refrigerant are mixed at the outlet of the evaporator, the temperature of the whole refrigerant is increased. There is a problem that the volume is increased, the compression efficiency by the compressor is lowered and adversely affects the durability of the compressor.

In addition, the above problem is to increase the temperature of the refrigerant flowing into the condenser to reduce the overall air conditioning system efficiency.

1A and 2B, the same components are denoted by the same reference numerals.

The present invention has been made to solve the problems as described above, an object of the present invention is to form an oil separator for separating the oil contained in the refrigerant at the inlet side of the condenser and the oil separated by the oil separator An oil cooling unit for cooling is formed to prevent the rise of the refrigerant temperature by lowering the temperature of the oil, and to provide a condenser that can increase the compression efficiency and the air conditioning system efficiency.

In addition, an object of the present invention is to remove the oil mixed in the refrigerant discharged from the compressor to prevent flow into the condenser to solve the problems such as deterioration of heat exchange performance caused by the circulation of the oil, it is possible to improve the durability of the compressor To provide a condenser.

The condenser of the present invention comprises: a first header tank and a second header tank formed side by side at a predetermined distance; An inlet pipe formed in the first header tank or the second header tank, into which the refrigerant compressed by the compressor flows, and an outlet pipe through which the refrigerant is discharged; A baffle provided inside the first header tank and the second header tank to control a flow of a refrigerant; A plurality of tubes formed at both ends of the first header tank and the second header tank to form a refrigerant passage; A plurality of pins interposed between the tubes; And a receiver cooling unit provided at one side of the first header tank or the second header tank to separate a gaseous refrigerant from a liquid phase refrigerant. In the condenser comprising a, the condenser is partitioned by the baffle in the first header tank or the second header tank is formed below the first region through which the refrigerant is first introduced through the inlet pipe to the condenser An oil cooling unit is formed, including an oil separation unit for separating the oil contained in the refrigerant flowing through, and a tube region communicating with the oil separation unit to lower the temperature by heat-exchanging the oil separated through the oil separation unit. It is characterized by.

The header tank in which the oil separator is formed may be larger in the width direction of the first header tank or the second header tank than the header tank in which the oil separator is not formed. The number of tubes communicating with one region is characterized in that formed in the range of 60 to 95% of the total number of tubes.

In addition, the oil cooling unit is characterized in that the oil discharge portion for discharging the oil heat exchanged in the first header tank or the second header tank to the compressor.

On the other hand, another condenser of the present invention is a first header tank and a second header tank are formed side by side spaced apart a certain distance; An inlet pipe formed in the first header tank or the second header tank, into which the refrigerant compressed by the compressor flows, and an outlet pipe through which the refrigerant is discharged; A baffle provided inside the first header tank and the second header tank to control a flow of a refrigerant; A plurality of tubes formed at both ends of the first header tank and the second header tank to form a refrigerant passage; A plurality of pins interposed between the tubes; And a receiver cooler provided at one side of the first header tank or the second header tank and separating a gaseous refrigerant from a liquid refrigerant. The condenser includes oil separated from an oil separator at a previous stage. The oil cooling unit for cooling is characterized in that the fastening fixed to the condenser.

In addition, the oil cooling unit is partitioned with the refrigerant by the baffle is formed integrally with the condenser, the oil inlet for the oil separated through the oil separation unit into the first header tank or the second header tank, and the It is characterized in that the oil discharge portion for discharging the oil cooled by the oil cooling unit to the compressor is formed.

In addition, the oil cooling unit is a fixing portion is formed on one side, the condenser is characterized in that the fastening portion corresponding to the fixing portion is formed on one side of the first header tank or the second header tank to be detachably fastened and fixed. do.

In addition, the pressure reducing means for decompressing the cooled oil between the oil cooling unit and the compressor is characterized in that it is further provided.

Accordingly, the condenser of the present invention can separate the oil contained in the refrigerant at the inlet side of the condenser to prevent the oil from flowing into the condenser and the evaporator to increase the heat exchange efficiency, and to cool the separated oil to flow into the compressor. By preventing the rise of the refrigerant temperature to improve the compression efficiency by the compressor and improve the durability of the compressor there is an advantage that can increase the overall air conditioning system efficiency.

Hereinafter, the condenser 100 of the present invention having the features as described above will be described in detail with reference to the accompanying drawings.

The present invention relates to a condenser (100), by separating the oil contained in the refrigerant flowing into the condenser (100) by the oil separation unit 210, the configuration for cooling the separated oil to move to the compressor (C) It can have a variety of forms.

3A is a plan view of the condenser 100 according to the present invention, FIG. 3B is a refrigerant flow diagram of the condensation shown in FIG. 3A, and the condenser 100 shown in FIGS. 3A and 3B is the first header tank ( 110 or the second header tank 120 is integrally formed with an oil separation unit 210 for separating oil, the oil cooling unit is formed including an area of the tube 150 in communication with the oil separation unit 210 An example in which 220 is formed is illustrated.

More specifically, the condenser 100 of the present invention includes a first header tank 110 and the second header tank 120 are formed side by side spaced apart at a predetermined distance; An inlet pipe (130) formed in the first header tank (110) or the second header tank (120), into which the refrigerant compressed by the compressor (C) is introduced, and the outlet pipe (140); A baffle (111) provided in the first header tank (110) and the second header tank (120) to control the flow of the refrigerant; A plurality of tubes 150 having both ends fixed to the first header tank 110 and the second header tank 120 to form a refrigerant flow path; A plurality of fins 160 interposed between the tubes 150; And a receiver cooling unit (170) provided at one side of the first header tank (110) or the second header tank (120) to separate a gaseous phase refrigerant from a liquid phase refrigerant. The condenser 100 is partitioned by the baffle 111 inside the first header tank 110 or the second header tank 120 so that refrigerant is first introduced through the inlet pipe 130 (S). Is formed on the lower side of the oil separation unit 210 for separating the oil contained in the refrigerant flowing into the condenser 100, and the oil separated through the oil separation unit 210 to heat exchange to lower the temperature The oil cooling unit 220 is formed to include an area of the tube 150 in communication with the oil separation unit 210 is formed.

The first region S is a region indicated by a thick line in FIG. 3B, and the first region S is formed in the baffle 111 in the first header tank 110 or the second header tank 120. An inlet pipe 130 is formed as a space partitioned by the space, and means a space in which refrigerant is first introduced through the inlet pipe 130.

That is, in the condenser 100 of the present invention illustrated in FIGS. 3A and 3B, the oil separator 210 may be integrally formed with the first header tank 110 or the second header tank 120. The oil may be separated below the first region S by a difference in viscosity, density, or the like without a device.

In order to maximize the oil separation function by the oil separation unit 210, the header tank in which the oil separation unit 210 is formed is compared with the header tank in which the oil separation unit 210 is not formed. 110 or larger in the width direction of the second header tank 120 is preferably formed.

The width direction of the first header tank 110 or the second header tank 120 is the same as the longitudinal direction of the tube 150, the header tank formed with the oil separation unit 210 in a direction other than the direction Since the deformation of the air conditioning case is inevitable when it is formed larger, the oil separation unit 210 in the width direction of the first header tank 110 or the second header tank 120 as shown in FIG. It is preferable that the formed header tank is made larger.

In addition, the number of tubes 150 communicating with the first region S is formed in a range of 60 to 95% of the total number of tubes 150, so as to increase the oil separation effect of the oil separation unit 210. The first region S is formed larger in the width direction of the first header tank 110 or the second header tank 120 and the position at which the baffle 111 is formed is adjusted to adjust the position of the first header tank ( 110 or more than a predetermined area in the longitudinal direction of the second header tank (120).

The oil cooling unit 220 uses a tube 150 in communication with the oil separation unit 210 in a configuration that lowers the temperature by heat-exchanging the oil separated through the oil separation unit 210.

3B, the inlet pipe 130 and the outlet pipe 140 are formed in the second header tank 120 to flow through the inlet pipe 130. Refrigerant is moved in the longitudinal direction of the second header tank 120, the oil is separated downward, the refrigerant separated oil is moved to the first header tank 110 along the tube 150 and the baffle 111 Into the receiver cooler 170 through the condensation region (A1) condensed along the flow path formed by the () and flows into the first header tank 110 again and the second header along the tube 150 As it is moved to the tank 120 is discharged through the outlet pipe 140 via the subcooling area (A2) that is subcooled.

In addition, the oil separated through the oil separation unit 210 is cooled while moving the oil cooling region A3 formed between the condensation region A1 and the subcooling region A2 and moved to the compressor C. At this time, the second header tank 120 is formed with an oil discharge part 222 for discharging the oil cooled by the oil cooling unit 220 to the compressor (C), the oil discharge unit 222 And a decompression means 240 may be further provided between the compressor (C).

Paths of the regions A1, A2, and A3 may be variously formed by the baffles 111.

4 is a flow diagram of a refrigerant of another condenser 100 according to the present invention. In the condenser 100 of the present invention shown in FIG. 4, the inlet pipe 130 and the outlet pipe 140 are formed in the second header tank ( And the oil discharge part 222 is formed in the second header tank 120, and the condensation area A1 is further compared with the condenser 100 shown in FIGS. 3A and 3B. An example is enlarged and the oil cooling region A2 is reduced.

5 is a refrigerant flow diagram of another condenser 100 according to the present invention, the condenser 100 of the present invention shown in FIG. 5 sequentially the first header tank 110 and the second header tank 120 The refrigerant flowing into the second header tank 120 in which the inlet pipe 130 is formed without a moving path is moved to the first header tank 110 through the tube 150 and immediately the receiver cooler 170. An example is shown after passing through the subcooling zone (A3) and discharged.

6 is a refrigerant flow diagram of another condenser 100 according to the present invention, but having the refrigerant flow shown in FIG. 5, but the oil outlet 222 through which the oil cooled through the oil cooling unit 220 is discharged. Shows an example formed in the first header tank 110.

3A to 6 illustrate an example in which the oil separator 210 and the oil cooling unit 220 are integrally formed with the condenser 100, and the oil separator 210 is illustrated. ) And oil cooling unit 220 has the advantage that no separate space is required.

On the other hand, the condenser 100 of the present invention is another condenser 100 of the present invention is a first header tank 110 and the second header tank 120 are formed side by side spaced apart at a predetermined distance; An inlet pipe (130) formed in the first header tank (110) or the second header tank (120), into which the refrigerant compressed by the compressor (C) is introduced, and the outlet pipe (140); A baffle (111) provided in the first header tank (110) and the second header tank (120) to control the flow of the refrigerant; A plurality of tubes 150 having both ends fixed to the first header tank 110 and the second header tank 120 to form a refrigerant flow path; A plurality of fins 160 interposed between the tubes 150; And a receiver cooling unit (170) provided at one side of the first header tank (110) or the second header tank (120) to separate a gaseous phase refrigerant from a liquid phase refrigerant. Condenser 100 is characterized in that the oil cooling unit 220 for fastening the oil separated from the oil separator 210 of the front end is fastened to the condenser 100.

FIG. 7 illustrates an example in which the oil separation unit 210 is separately formed as compared with the condenser 100 shown in FIGS. 3A to 6 as a refrigerant flow diagram of another condenser 100 according to the present invention.

The oil separator 210 may use an existing oil separator, separate the oil of the refrigerant passing through the compressor C, and the separated oil is moved to the oil cooling unit 220, and the remaining refrigerant is the condenser. The inside of the condenser 100 flows through the inlet pipe 130 of 100.

FIG. 7 illustrates an example in which the oil cooling unit 220 is integrally formed with the condenser 100. The oil cooling unit 220 is partitioned from the general refrigerant by the baffle 111. 2, an oil inlet 221 and an oil outlet 222 through which oil is introduced into the header tank 120 are formed.

7 shows that the oil cooling unit 220 is formed on the uppermost side of the condensation unit, the oil inlet unit 221 is the second header tank 120, and the oil outlet unit 222 is the second header. As shown in the example formed in the tank 120, the position and number of the baffle 111 is formed by the oil cooling unit 220, the position where the oil inlet 221 and the oil outlet 222 is formed, and the like. Accordingly, as shown in FIG. 3A to FIG. 6, it may be formed between the condensation region A1 and the cooling region A4, and may be variously formed.

8 is a plan view of another condenser 100 according to the present invention, the oil cooling unit 220 shows an example provided with a heat exchanger separate from the condenser 100.

The oil cooling unit 220 has a fixing portion 230 is formed on one side, the fastening portion corresponding to the fixing portion 230, the condenser is the first header tank 110 or the second header tank 120 It is formed on one side of the fastening is detachably fastened.

9 is a Ph diagram of the condenser 100 according to the present invention. As shown in FIG. 9, in the condenser 100 of the present invention, a refrigerant in which oil is separated by an oil separator 210 flows. The oil separated through the oil separating part 210 is cooled by the oil cooling part 220 and then moved to the inlet end side of the compressor C through the decompression means 240.

Through this, the condenser 100 of the present invention has an advantage of preventing the temperature of the refrigerant passing through the evaporator E from being sharply increased and increasing the compression performance by the compressor C, thereby increasing heat exchange efficiency. .

As shown, the condenser 100 of the present invention may be variously formed in addition to the illustrated in accordance with the number or location of the inlet pipe 130, the outlet pipe 140, the baffle 111 is formed.

The present invention is not limited to the above-described embodiments, and the scope of application is not limited, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

Figure 1a is a perspective view of a conventional condenser.

1B is a refrigerant flow diagram of the condenser shown in FIG. 1A.

1C is a P-h diagram of the condenser shown in FIG. 1A.

Figure 2a is another perspective view of a conventional condenser.

FIG. 2B is a P-h diagram of the condenser shown in FIG. 2A.

3a is a plan view of a condenser according to the invention;

3B is a refrigerant flow diagram of condensation shown in FIG. 3A.

4 is a refrigerant flow diagram of another condenser according to the present invention.

5 is a refrigerant flow diagram of another condenser according to the present invention.

6 is a refrigerant flow diagram of another condenser according to the present invention.

7 is a refrigerant flow diagram of another condenser according to the present invention.

8 is a plan view of another condenser according to the present invention;

9 is a P-h diagram of the condenser according to the invention.

** Description of the symbols for the main parts of the drawings **

100: condenser

110: first header tank 111: baffle

120: second header tank

130: inlet pipe 140: outlet pipe

150: tube 160: pin

170: receiver cooler 180: fastening part

210: oil separator

220: oil cooling unit

221: oil inlet 222: oil outlet

230: fixed part

240: decompression means

S: first region

A1: condensation area

A2: oil cooling zone

A3: subcooling zone

Claims (8)

A first header tank 110 and a second header tank 120 formed side by side at a predetermined distance; An inlet pipe (130) formed in the first header tank (110) or the second header tank (120), into which the refrigerant compressed by the compressor (C) is introduced, and the outlet pipe (140); A baffle (111) provided in the first header tank (110) and the second header tank (120) to control the flow of the refrigerant; A plurality of tubes 150 having both ends fixed to the first header tank 110 and the second header tank 120 to form a refrigerant flow path; A plurality of fins 160 interposed between the tubes 150; And a receiver cooling unit 170 provided at one side of the first header tank 110 or the second header tank 120 to separate a gas phase refrigerant from a liquid phase refrigerant. The condenser 100 It is partitioned by the baffle 111 in the first header tank 110 or the second header tank 120 to be formed below the first region S through which the refrigerant is first introduced through the inlet pipe 130. The oil separation unit 210 to separate the oil contained in the refrigerant flowing into the condenser 100, and the oil separation unit to lower the temperature by heat-exchanging the oil separated through the oil separation unit 210 ( A condenser characterized in that an oil cooler (220) is formed that includes a region of the tube (150) in communication with the 210. The method of claim 1, The header tank in which the oil separator 210 is formed is larger in the width direction of the first header tank 110 or the second header tank 120 than in the header tank in which the oil separator 210 is not formed. A condenser, characterized in that formed. The method of claim 2, The condenser (100) is a condenser, characterized in that the number of tubes 150 in communication with the first region (S) is formed in the range of 60 to 95% of the total number of tubes (150). The method of claim 3, wherein The oil cooling unit 220 is characterized in that the oil discharge unit 222 for discharging the heat exchanged oil in the first header tank 110 or the second header tank 120 to the compressor (C) is formed. Condenser. A first header tank 110 and a second header tank 120 formed side by side at a predetermined distance; An inlet pipe 130 formed in the first header tank 110 or the second header tank 120 and a refrigerant compressed by the compressor C, and an outlet pipe 140 through which the refrigerant is discharged; A baffle (111) provided in the first header tank (110) and the second header tank (120) to control the flow of the refrigerant; A plurality of tubes 150 having both ends fixed to the first header tank 110 and the second header tank 120 to form a refrigerant flow path; A plurality of fins 160 interposed between the tubes 150; And a receiver cooling unit 170 provided at one side of the first header tank 110 or the second header tank 120 to separate a gas phase refrigerant from a liquid phase refrigerant. The condenser 100 Condenser, characterized in that the oil cooling unit 220 for fastening the oil separated from the oil separation unit 210 of the front end is fixed to the condenser (100). The method of claim 5, wherein The oil cooling unit 220 is partitioned from the refrigerant by the baffle 111 and integrally formed with the condenser 100, and the oil is separated into the first header tank 110 or the second header tank 120. An oil inlet 221 through which the oil separated through the unit 210 is introduced, and an oil outlet 222 through which the oil cooled by the oil cooling unit 220 is discharged to the compressor C is formed. A condenser, characterized in that. The method of claim 5, wherein The oil cooling unit 220 has a fixing portion 230 is formed on one side, the fastening portion corresponding to the fixing portion 230, the condenser is the first header tank 110 or the second header tank 120 It is formed on one side of the condenser characterized in that the fastening is removable. The method according to any one of claims 1 to 7, wherein Condenser characterized in that it further comprises a decompression means 240 for decompressing the cooled oil between the oil cooling unit 220 and the compressor (C).

Images