KR20060055825A - Strainer for refrigerant in air-conditioner - Google Patents

Abstract

The present invention relates to a refrigerant filtering device of an air conditioner for filtering foreign substances contained in the refrigerant of the air conditioner.

The present invention provides a flow path through which a refrigerant circulates; It provides a refrigerant filtration device of the air conditioner comprising a filter network: installed inclined in the flow path.

Therefore, according to the present invention, even if the refrigerant flows in the opposite direction and the reverse pressure is applied to the filtration apparatus, the filtration network is not damaged, thereby improving the reliability of the air conditioner.

Air Conditioner, Refrigerant, Foreign Material, Sludge, Strainer, Unidirectional, Bidirectional

Description

Strainer for refrigerant in air-conditioner

1 is a cross-sectional view showing a one-way refrigerant filtering device of a conventional general air conditioner.

Figure 2 is a cross-sectional view showing a two-way refrigerant filtering device of a conventional general air conditioner.

3 is a cross-sectional view showing a refrigerant filtration device of the air conditioner of the present invention.

4 is an exploded perspective view showing the filter net and the filter net support of FIG.

FIG. 5 is a cross-sectional view illustrating when a refrigerant flows in a reverse direction to a refrigerant filtering device of the air conditioner of FIG.

* Explanation of Signs of Major Parts of Drawings

110: Euro 120: case

130: filter network 140: foreign matter

150: filter net support

The present invention relates to an air conditioner, and more particularly, to a refrigerant filtering device of an air conditioner for filtering foreign matter contained in a refrigerant of an air conditioner.

In general, an air conditioner is a device for cooling or heating an indoor space such as a living space, a restaurant, or an office.

Such an air conditioner includes an indoor unit and an outdoor unit, and includes an air passage through which a refrigerant is circulated in the indoor unit and the outdoor unit, and a compressor for applying pressure to the refrigerant.

In addition, the refrigerant passes through the indoor unit and the outdoor unit, and adjusts the temperature of the indoor air through an endothermic and exothermic process caused by a phase change.

That is, when the air conditioner is in the cooling mode, the refrigerant absorbs heat from the indoor air while evaporating in the indoor unit, and emits heat while condensing in the outdoor unit.

In addition, the refrigerant circulates the indoor unit and the outdoor unit through a flow path.

On the other hand, when the air conditioner as described above is configured as an air conditioning system in a building, the pipe of the flow passage forms a relatively long pipe.

In the case of having the channel of the long pipe as described above, the pipe of the channel is subsequently produced by welding, etc. In this case, the sludge is separated from the welding part and circulated together with the refrigerant.

However, as described above, when the refrigerant contains sludge or the like and circulates with the refrigerant, it may accumulate in a specific part of the flow path, preventing the flow from being desired or causing a failure, and accumulating on moving parts such as a compressor. This can cause problems with the performance and reliability of the air conditioner, causing component wear and malfunction.

Thus, a filtration device for filtering foreign matter contained in the refrigerant on the flow path pipe is provided.

1 is a view showing the filtration device.

The filtering device has a mesh size 30 having a mesh of a predetermined size is larger than the mesh size of the filtering net 30 of the foreign matter 40 contained in the refrigerant circulating located in the flow path 10 The foreign material 40 is made to be filtered through the filter net (30).

In addition, the inner diameter of the flow path 10 where the filter net 30 is installed is larger than the inner diameter of the flow path 10 in the other part of the periphery to form a case 20.

This is to prevent a large flow resistance of the refrigerant even when the foreign matter 40 is accumulated in the filter net 30 to reduce the flow passage of the refrigerant slightly.

In addition, the greater the surface area of the filter net 30, the greater the filtering capacity, so that the diameter of the filter net is formed to be larger than the inner diameter of the case 20, the outer peripheral portion of the filter net 30 to the fixing member 50 It is fixed to the inner wall surface of the case 20 or the flow path, the central portion of the filter net 20 is provided so as to project downstream of the flow direction of the refrigerant.

Therefore, the foreign matter 40 circulated with the refrigerant is collected in the filtering net 30, and the filtering net 30 is inclined toward the center, so that the foreign matter 40 collected in the filtering net 30 is the filtering net. It moves along the inclination of 30 and accumulates in the central part of the filtering net 30.

On the other hand, in recent years, air conditioners capable of both cooling and heating have been released. When the cooling / heating mode is switched in the air conditioner as described above, the refrigerant flows in the opposite direction.

However, in the case of the filtration device in which the central portion of the filtration net 30 protrudes as described above, if the flow of the refrigerant is reversed and the back pressure is applied to the filtration net, the filtration net 30 may not be able to withstand the back pressure and may be damaged. have.

Therefore, in the case of an air conditioner that also serves as a cooling / heating function, a bidirectional filter net 32 as shown in FIG. 2 is used.

Hereinafter, the filtering network shown in FIG. 1 is referred to as a unidirectional filtering network 30, and the filtering network shown in FIG. 2 is referred to as a bidirectional filtering network 32.

The bidirectional filtering net 32 is similar in shape to the unidirectional filtering net 30 described above. However, in the case where the refrigerant flows in the opposite direction and the reverse pressure is applied to the filtering net 32, the degree of protruding the central portion of the filtering net 32 is formed to be higher than that of the unidirectional filtering net 30.

However, the bidirectional filtration device as described above has the following problems.

First, since the surface area of the filtering network is smaller than that of the unidirectional filtration device, there is a problem in that the flow resistance of the refrigerant is severely generated even with a small amount of foreign matter compared to the unidirectional filtration device.

Second, in the unidirectional filtration device and the bidirectional filtration device, the flow rate of the refrigerant circulating in the flow path is the fastest in the central part, and since foreign matters are accumulated in the central part of the filtration network, the flow resistance of the refrigerant is increased and acts on the filtration network. There is a problem that the load is also increased.

The present invention is to solve the above problems, an object of the present invention is to provide a refrigerant filtration device of the air conditioner that is not damaged even if the circulation of the refrigerant flowing through the flow path is reversed to the filter network The purpose.

In order to achieve the above object, the present invention provides a flow path through which a refrigerant circulates; It provides a refrigerant filtration device of the air conditioner comprising a filter network: installed inclined in the flow path.

And, the inclination angle of the filter net is characterized in that it has a range of 30 degrees or more and 80 degrees or less.

Therefore, according to the refrigerant filtering device of the air conditioner of the present invention, even if the flow of the refrigerant flowing in the flow path is reversed and the back pressure is applied to the filtering device, the filtering network is not damaged.

Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the refrigerant leisure device of the air conditioner of the present invention that can specifically realize the above object.

In addition, the same components as in the prior art are given the same names and the same reference numerals for convenience of description, and detailed description thereof will be omitted.

3 to 5, a preferred embodiment of the refrigerant filtration device of the air conditioner of the present invention will be described.                     

First, as shown in FIG. 3, a filtering network 130 having a mesh structure is installed on the flow path 110 through which the coolant flows to filter foreign matter 140 included in the coolant.

Here, the filter net 130 is installed to have a predetermined angle inclined with respect to the longitudinal direction of the flow path (110).

Here, an angle formed by the filter net 130 with respect to the longitudinal direction of the flow path 110 is referred to as α.

The angle α at which the filter net 130 is inclined preferably has a value between 30 ° and 80 °.

As the angle of inclination of the filter net 130 increases, the surface area of the filter net 130 increases, so that the filtering ability is improved. This is a value that depends on the performance of the applied product. .

 In addition, in order to prevent the flow resistance of the refrigerant from increasing even when the passage of the refrigerant is slightly reduced due to the accumulation of foreign matter 140 in the filter network 130, the flow path 110 where the filter network 130 is installed has an inner diameter thereof. It is preferable to form the case 120 by being formed larger than the inner diameter of the flow path 110 of the other part around this.

In addition, the filter net support 150 is preferably further configured to further include a filter net support 150 for fixing the inner wall surface of the case 120 or the flow path (110).

Here, the filter net support 150, as shown in Figure 4, has an outer diameter corresponding to the inner diameter of the case 120 or the flow path 110, one side thereof corresponds to the inclination angle of the filter net 130 It is preferable to be formed to have an inclined surface of the slope.

Accordingly, the filtering net 130 is fixed to the inclined portion of the filtering net support 150, and the outer circumferential portion of the filtering net support 150 is fixed to the inner wall surface of the case 120 or the flow path 110 so that the filtering net 130 is fixed. ) Is completed.

Hereinafter, in the description of this embodiment, it will be described that the refrigerant flows from the right side to the left side of the flow path 110 in the forward direction, and the refrigerant flows from the left side to the right side of the flow path 110 in the reverse direction.

Therefore, when the coolant flows in the forward direction, the foreign matters 140 included in the coolant flow together and are filtered by the filter network 130.

Then, the filtered foreign matters 140 are collected at the lower side of the filtering net 130 along the inclination of the filtering net 130.

On the other hand, as shown in FIG. 5, when the refrigerant flows in the reverse direction, the foreign matters 140 filtered by the filtering network 130 are collected at the upper side of the filtering network 130 along the inclination of the filtering network 130. .

On the other hand, when the refrigerant flows in the forward direction and in the reverse direction, the direction of the pressure applied to the filter network 130 is reversed.

However, since the filtering net 130 is inclined only in one direction, even when a pressure in the reverse direction is applied to the filtering net 130, the pressure distribution in the filtering net 130 is different in the same direction, and the same as when the refrigerant flows in the forward direction. Therefore, the filter net 130 is not damaged.                     

Therefore, according to the refrigerant filtering device of the air conditioner of the present invention, even when the refrigerant flows in the opposite direction and the reverse pressure is applied to the filtering device, the filter network 130 is not damaged.

In addition, since the filtering net 130 is formed to be inclined with respect to the flow path 110, the surface area of the filtering net 130 is widened, thereby improving the filtering ability.

In addition, since the foreign matter 140 filtered in the filter net 130 is collected by moving to the upper or lower portion of the filter net 130, the flow resistance of the refrigerant is reduced.

The efficiency of the filtration device of the air conditioner according to the present invention described above is as follows.

First, even when the refrigerant flows in the opposite direction and the reverse pressure is applied to the filtering device, the filter network is not damaged, thereby improving the reliability of the air conditioner.

Second, since the filtering net is formed to be inclined with respect to the flow path, the surface area of the filtering net is widened, thereby improving the ability to filter foreign substances.

Third, since foreign substances filtered in the filtering net are collected by moving to the upper or lower part of the filtering net, the flow resistance of the refrigerant is reduced, so that the operation efficiency of the air conditioner is increased, and excessive pressure is applied to the filtering net to damage the filtering net. The phenomenon is prevented.

Claims (4)

A flow path through which the refrigerant circulates; Refrigerant filtration device of the air conditioner comprising: a filter net installed inclined in the flow path. The method of claim 1, The angle of inclination of the filter net is a refrigerant filtering device of the air conditioner, characterized in that it has a range of 30 degrees to 80 degrees. The method of claim 1, Refrigerant filtration device of the air conditioner for supporting the filter net, characterized in that it further comprises a filter net support for fixing in the passage. The method of claim 3, wherein The filter net support has an outer diameter corresponding to the inner diameter of the flow path of the portion in which the filter net is installed, the refrigerant filtering device of the air conditioner, characterized in that one side is formed to have a slope corresponding to the inclination angle of the filter net.

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