KR100784839B1 - Oil Separated Device - Google Patents

Abstract

The present invention provides an air conditioner, comprising: a housing having a hollow in which a refrigerant and an oil are collected; And at least one oil separator provided in the hollow of the housing to separate and pass the refrigerant and oil, wherein the housing includes an inlet for introducing refrigerant and oil from a compressor and a refrigerant flowing out of the refrigerant separated by a heat exchanger. Consists of an outlet and a plurality of oil outlets for outflow of the oil separated by the compressor, the housing further comprises an oil recovery case connected to the oil outlet, to improve the cooling / heating efficiency of the air conditioner and oil An oil separator is designed to prevent compressor damage due to lack.

Oil recovery unit, housing, oil separation

Description

Oil Separation Device {Oil Separated Device}

1 is a cycle diagram showing the flow of the refrigerant during the cooling operation in the system of the air conditioner according to the prior art.

2 is a cycle diagram showing the flow of the refrigerant during heating operation in the system of the air conditioner according to the prior art.

3 is a cycle diagram showing the flow of the refrigerant during the cooling / heating operation in the system of the air conditioner according to the present invention.

Figure 4 is a front view showing an oil recovery device formed in the compressor discharge port side pipe according to the present invention.

Figure 5 is a front view showing an oil separation plate formed on the front of the housing of the oil separation plate according to the present invention.

Figure 6 is a front view showing an oil separator formed on the rear of the housing of the oil separator according to the invention.

Explanation of symbols used in the main part of the drawing

100: air conditioner 110: compressor

120: housing 121: inlet

122: refrigerant outlet 123a: front oil separator

123b: rear oil separator 124: perforation

125: oil outlet 126: oil recovery case

127: capillary

The present invention relates to an air conditioner, and more particularly, to separate the oil on the refrigerant outlet side of the compressor to prevent the oil supplied to the compressor of the air conditioner for lubrication from mixing with the refrigerant and circulating the cooling system of the air conditioner. It relates to an oil separator.

In general, an air conditioner cools a room by a repetitive action of inhaling hot air in a room, exchanging heat with a low temperature refrigerant, and then discharging it into the room, or exchanging heat with a high temperature refrigerant by inhaling cold air in the room. A cooling / heating system that heats a room by a repetitive action of discharging it into a room, which is a device forming a series of cycles consisting of a compressor, a condenser, an expansion valve, and an evaporator.

In addition, the air conditioner may be classified into a separate type of air conditioner in which the outdoor unit and the indoor unit are separated from each other, and an integrated air conditioner in which the outdoor unit and the indoor unit are integrally installed.

1 is a cycle diagram showing the flow of the refrigerant during the cooling operation in the system of the air conditioner according to the prior art, Figure 2 is a cycle showing the flow of the refrigerant during the warm operation in the system of the air conditioner according to the prior art Is leading.

As shown in FIG. 1 or FIG. 2, a system of a conventional air conditioner 10 includes a compressor 20, an outdoor heat exchanger 30, a dryer 40, an expansion valve 50, and an indoor heat exchanger 60. Heat exchange is performed while the refrigerant circulates through the pipes 70 of each device to perform cooling or heating.

 Here, the outdoor unit is composed of a compressor 20, an outdoor heat exchanger 30, and the indoor unit is composed of an expansion valve 50 and an indoor heat exchanger 60.

When the air conditioner 10 having such a configuration performs cooling operation, the flow of the refrigerant is controlled by the four-way valve 80 such that the compressor 20-the outdoor heat exchanger 30-the expansion valve 50-the indoor heat exchanger ( 60 flows along the solid line shown by the four-way valve 80.

Here, the outdoor heat exchanger 30 of the outdoor unit serves as a condenser for condensing the refrigerant in the gaseous state of the high temperature / high pressure conveyed from the compressor 20, the indoor heat exchanger 60 is a low temperature / The refrigerant introduced at a low pressure serves as an evaporator that exchanges heat with outside air.

That is, the refrigerant gas compressed at high temperature / high pressure by the compressor 20 flows into the outdoor heat exchanger 30 by the four-way valve, and is forcedly cooled in the outdoor heat exchanger 30 to liquefy.

In addition, the refrigerant heat exchanged in the outdoor heat exchanger 30 is only a liquid refrigerant in a state in which moisture and foreign substances contained in the refrigerant are removed from the dryer 40 installed between the outdoor heat exchanger 30 and the expansion valve 50. It is sent to the expansion valve (50).

The refrigerant introduced into the expansion valve 40 and brought into a low temperature and low pressure state is introduced into the indoor heat exchanger 60, and takes the surrounding heat away from the indoor heat exchanger 60, and repeats the circulation process of being sucked back into the compressor 20. To achieve one cooling cycle.

Next, when the air conditioner 10 performs the heating operation, the refrigerant circulates as opposed to the cooling cycle.

Therefore, the outdoor heat exchanger 30 of the outdoor unit serves as an evaporator in which the refrigerant introduced in a low temperature / low pressure state exchanges air with air, and the indoor heat exchanger 60 exchanges the indoor air with the high temperature and high pressure refrigerant passing therein. It acts as a condenser.

The refrigerant gas compressed at a high temperature / high pressure in the compressor 20 is circulated along the dotted line due to the four-way valve 80.

That is, the refrigerant gas compressed at a high temperature / high pressure flows into the indoor heat exchanger 60 to liquefy while the gaseous refrigerant releases heat, and the refrigerant introduced into the expansion valve 50 is a dryer (low temperature / low pressure). The water and foreign substances contained in the refrigerant are removed while passing through 40, and are sent to the outdoor heat exchanger 30.

 The refrigerant introduced into the outdoor heat exchanger (30) repeats a circulation process that takes the surrounding heat from the outdoor heat exchanger (30) and is sucked back into the compressor (20) to form one heating cycle.

In the above apparatus, oil is applied to the compressor 20 for lubrication when the piston for compressing the refrigerant is operated. Such oil is discharged from the compressor 30 together with the refrigerant when the air conditioner 10 operates. To circulate the system of the air conditioner 10.

As such, the lubricating oil of the compressor 20 that is mixed with the refrigerant and circulates in the system of the air conditioner 10 has the following problems.

When the refrigerant is mixed with the oil and circulated, the refrigerant introduced into the heat exchangers 30 and 60, such as the condenser and the evaporator, is purely unmixed due to the oil having a high viscosity and specific gravity when a phase change occurs due to heat exchange. Compared with the refrigerant, there is a problem that the phase change occurs less.

This causes a problem that the heat absorption and release rate of the refrigerant is slow, thereby lowering the heat exchange efficiency and performance of the heat exchangers 30 and 60.

In addition, when the loss of oil required for the compressor 20 increases and the amount of lost oil is recovered to the compressor decreases, the compressor 20 may be damaged due to poor lubrication of the compressor 20.

In addition, in the heat exchanger 30 or 60 functioning as an evaporator during cooling / heating, when a refrigerant in a liquid state is present due to a poor heat exchange, the liquid refrigerant is directly introduced into the compressor 20. Compression of the refrigerant causes a problem of degrading the performance and efficiency of the compressor 20.

In addition, the shortage of oil must be replenished, and by draining the oil during maintenance of the system, an additional problem occurs that causes environmental pollution.

Accordingly, the present invention has been made to solve the above problems, the lubricating oil of the compressor mixed in the refrigerant discharged from the compressor is separated from the refrigerant immediately at the refrigerant discharge port side of the compressor to be recovered in the compressor lubricator, the compressor It is an object of the present invention to improve the heat exchange efficiency by making the oil supply to the furnace more smooth.

The present invention for achieving the above object, the housing formed with a hollow so that the refrigerant and oil discharged from the compressor for compressing the refrigerant; An inlet port through which the refrigerant discharged from the compressor and the oil mixed with the refrigerant flow into the housing; At least one oil separation plate installed inside the housing to separate the refrigerant discharged from the compressor and the oil mixed in the refrigerant; An oil outlet installed at a bottom of the housing to discharge oil separated from the refrigerant through the oil separation plate; And a refrigerant outlet for discharging the refrigerant from which oil is separated in the oil separation plate from the housing.

In addition, the housing further includes an oil recovery case connected to the oil outlet to allow the discharged oil to be recovered, wherein the oil recovery case is formed of a 'U' shaped tube.

In addition, the oil recovery case further comprises at least one capillary tube so that the recovered oil is supplied to the compressor at a constant pressure.

In addition, a plurality of the oil separation plate is installed in the housing, the oil separation plate is formed a plurality of perforations for separating oil from the refrigerant, the perforations formed in each of the oil separation plate is installed on the concentric shaft It is characterized in that they are arranged alternately with each other.

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

Figure 3 is a cycle diagram showing the flow of the refrigerant during the cooling / heating of the air conditioner according to the present invention, Figure 4 is an internal front view showing the inside of the oil separation device according to the present invention.

5 is a front view of an oil separator showing the oil separator of the front of the housing according to the present invention, Figure 6 is a front view of an oil separator showing the oil separator formed on the rear of the housing according to the present invention.

3 to 6, in the air conditioner 100, the air / heating cycle is composed of a compressor 110, an outdoor heat exchanger 30, an expansion valve 40 and an indoor heat exchanger 60. The refrigerant flows along the pipe 70 connecting them, and at this time, by changing the flow of the refrigerant by the four-way valve 80, a cooling / heating system of the air conditioner 100 is configured.

Here, since the cooling / heating cycle by the circulation of the refrigerant in the devices of the air conditioner 100 is the same as the cooling / heating cycle described in the related art, a detailed description thereof will be omitted.

The oil separating apparatus of the present invention is installed on the pipe 70 through which the refrigerant is discharged from the compressor 110 to form a hollow housing 120 in which the devices for collecting the refrigerant and the oil are installed.

At least one oil separation plate 123a and 123b is formed in the inner hollow of the housing 120 to separate and pass the refrigerant and oil, and the housing 120 has an inlet 121 for introducing refrigerant and oil from the compressor 110. ), A refrigerant outlet 122 for flowing out the refrigerant separated inside the housing 120 to be introduced into the heat exchanger 30 or 60, and a plurality of oil outlets 125 for flowing out the oil separated by the compressor 110. )

Here, the oil outlet 125 formed at the lower side of the housing 120 is further provided with an oil recovery case 126 so that the oil collected in the lower portion of the housing 120 is collected.

Oil outlet 125 is most preferably formed of two holes in the lower portion of the housing 120, the oil return case 126 in the tubular shape of the 'U' shape tightly coupled to the two oil outlet (125) Is formed.

Here, at least one capillary tube 127 is formed in the oil recovery case 126 so that the oil recovered in the oil recovery case 126 is supplied to the compressor 110 at a constant pressure, and is connected to the compressor 110. .

In addition, a plurality of perforations 124 are formed in the oil separation plates 123a and 123b to allow the refrigerant in the gas state to pass therethrough, and the oil in the liquid state hits the oil separation plates 123a and 123b, resulting in a difference in specific gravity. And oil to separate.

Here, the perforations 124 formed on the oil separation plate 123a on the front side and the oil separation plate 123b on the rear side are preferably arranged at the front / rear side of the inner circumference of the housing 120 so as to cross each other.

Due to the staggered positions of the perforations 124, the oil passing through the front oil separation plate 123a prevents the oil from passing through the rear oil separation plate 123b and prevents the oil from passing through again. It is collected between the separator 123a and the rear oil separator 123b.

In addition, the oil separation plates 123a and 123b are vertically arranged in the longitudinal direction of the housing 120.

Looking at this in more detail, the gaseous refrigerant discharged at high temperature / high pressure from the compressor 110 is discharged by mixing the liquid oil used for lubrication in the compressor (110).

At this time, in order to separate the refrigerant and oil discharged from the compressor 110, the housing 120 is installed on the pipe 70 on the discharge port side discharged from the compressor 110.

Inside the housing 120, an inlet 121 through which the refrigerant discharged from the compressor 110 and the oil mixed in the refrigerant are introduced is formed in the front of the housing 120, and the oil and the refrigerant introduced into the inlet 121 are formed. Oil separators 123a and 123b for separating the oil outlet, an oil outlet 125 formed at the lower side of the housing 120 to allow only oil separated from the refrigerant from the oil separators 123a and 123b, and an oil outlet An oil recovery case 126 is formed at the lower portion of the housing 120 to accommodate the oil collected through the 125, and a capillary tube 127 that sends the recovered oil to the compressor 110 in the oil recovery case 126. ) Is connected.

In more detail, when the refrigerant entering the compressor 110 is discharged in the form of high temperature / high pressure, the refrigerant in the gas state discharged from the compressor 20 is mixed with the oil in the liquid state used to drive the compressor 110 together. Discharged.

The oil discharged from the compressor 110 flows into the housing 120 through the inlet 121. The gaseous refrigerant and the oil in the liquid state introduced into the housing 120 collide with the front oil separator 123a formed at the front side of the housing 120.

At this time, the oil in the liquid state is hit by the front oil separation plate (123a) to reduce the speed, the refrigerant passes lightly through the perforations 124 even if hit, the relatively large oil to the lower portion of the housing 120 I sit down.

In addition, the coolant and oil collide with the rear oil separation plate 123b formed to be crossed with the perforation 124 of the oil separation plate 123a formed on the front side, and the oil is separated from the front oil separation plate 123a and the rear oil separation plate ( 123b) are gathered while sinking.

The collected oil is collected in the oil recovery case 126 through the oil outlet 125 formed at the lower side of the housing 120 because of the specific gravity.

The oil collected in the oil recovery case 126 is recovered to the compressor 20 again through a capillary tube 127 formed at one side of the oil recovery case 126, thereby lubricating when the compressor is driven.

As described above, by providing the oil separator and the oil inlet pipe on the discharge port of the refrigerant introduced into the compressor, there is an effect of improving the cooling / heating efficiency of the air conditioner.

In addition, there is an effect to prevent damage to the compressor due to the lack of oil.

It also eliminates the need for a device to add oil for oil shortages after long piping and system repairs.

Claims (6)

delete A housing in which a hollow is formed to accommodate the refrigerant and the oil discharged from the compressor compressing the refrigerant; An inlet port through which the refrigerant discharged from the compressor and the oil mixed with the refrigerant flow into the housing; A plurality of oil separation plates installed inside the housing to be spaced apart from each other by a predetermined interval so that the refrigerant discharged from the compressor and the oil mixed in the refrigerant are separated and collected; An oil outlet installed at a bottom of the housing to discharge oil collected between the plurality of oil separation plates; A refrigerant outlet for discharging refrigerant from which oil is separated in the plurality of oil separation plates from a housing; And And an oil recovery case connected to the oil outlet to recover the discharged oil. The method of claim 2, The oil recovery case is an oil separation device, characterized in that consisting of 'U' shaped tube. The method of claim 2 or 3, The oil recovery case further comprises at least one capillary tube so that the recovered oil is supplied to the compressor at a constant pressure. delete delete

Images