WO2023085846A1

WO2023085846A1 - Air cooling-type gas cooler for refrigeration compressor

Info

Publication number: WO2023085846A1
Application number: PCT/KR2022/017745
Authority: WO
Inventors: 이정기
Original assignee: 캠코리아 주식회사
Priority date: 2021-11-15
Filing date: 2022-11-11
Publication date: 2023-05-19
Also published as: KR102402382B1

Abstract

The preset invention relates to an air cooling-type gas cooler for a refrigeration compressor and, more specifically, to an air cooling-type gas cooler for a refrigeration compressor, comprising: a housing which forms an outdoor unit body in a box shape and has a fan formed at one side of a body thereof; a heat exchange unit including an inner copper pipe, which is disposed inside the housing, and an outer copper pipe, which surrounds and is spaced apart from the inner copper pipe to form a space therein, to enable a spiral corrugated pipe to be wound at intervals of 3 mm or less so that a flow channel is seated in a diagonal direction to form double pipes; and a corrugated copper pin spirally disposed between the inner copper pipe and the outer copper pipe.

Description

Air-cooled gas cooler for refrigeration compressor

The present invention relates to an air-cooled gas cooler for a refrigeration compressor, and more particularly, to install a double copper pipe by inserting another copper pipe inside a copper pipe for heat cooling in a condenser instead of an indirect cooling method using aluminum fins, Corrugated copper fins are wound spirally between the outer copper pipe and the inner copper pipe at intervals of 3 mm or less to direct the refrigerant flow path in a diagonal direction. It relates to an air-cooled gas cooler for a refrigeration compressor that cools.

Existing air-cooled gas coolers currently in use on the market insert and saddle a copper pipe with an 8mm hole in an aluminum plate, expand the copper pipe, and install it closely to the aluminum plate, and circulate the refrigerant circulating in the copper pipe by cooling the aluminum plate. A gas condenser (CONDENSER) is used as an indirect cooling method that cools the refrigerant being used.

In general, attempts to improve the heat exchange efficiency of a condenser, that is, the cooling efficiency, have been made for a long time.

Such prior art includes Korean Patent No. 10-0406047 (registered on November 5, 2003), "Outdoor heat exchanger cooling device using condensate from air conditioner" and Korean Patent No. 10-0555417 (registered on February 20, 2006). "Condensate discharge structure of an outdoor unit" and Japanese Patent Laid-open Publication No. 2004-190877 (published on July 8, 2004) "air-cooled air conditioner" are disclosed.

In these conventional technologies, condensate generated in the indoor unit of an air conditioner is supplied to the outdoor unit using a condensate connection pipe to wet the lower part of the heat exchanger of the outdoor unit with condensate (Patent No. 0406047), or is supplied to a water collection tank installed on the upper part of the heat exchanger of the outdoor unit. and the condensed water stored in the collecting tank drips onto the heat exchanger through the discharge groove.

At this time, the heat exchanger is wetted to improve the thermal efficiency of the air conditioner (Patent No. 0555417 and Japanese Laid-open Patent No. 2004-190877).

In addition, the prior art has a disadvantage in that the amount of falling water is insignificant and the condensed water wets only the upper side of the heat exchanger, so that it is not very effective in improving the overall cooling efficiency.

On the other hand, as another prior art, a configuration of a spray method in which condensed water from an air conditioner is sprayed to a heat exchanger of an outdoor unit has been proposed.

In this spray type outdoor unit cooling device, when spraying using the ejector method using the fan of the outdoor unit, the spraying efficiency is low, making it impossible to improve the cooling performance substantially.

* And when a separate injector is used, since the power for the operation of the injector must be additionally consumed, the power consumption of the air conditioner relatively increases, resulting in a problem that the running cost increases.

In order to solve the above problems of the prior art, the present invention spirally winds corrugated copper pins between the inner copper pipe and the outer copper pipe at intervals of 3 mm or less to the inner copper pipe, so that the gap between the corrugated copper pins forms a diagonal shape. It is to provide an air-cooled gas cooler for refrigeration compressors with a new structure of a direct cooling method in which the flow path is seated in a diagonal direction and the heated refrigerant passes between the corrugated copper fins so that the outer copper pipe and the corrugated copper fins that conduct cold heat cool the refrigerant.

In addition, since the outside of the copper pipe with a large heat dissipation area is directly cooled by forming a copper pipe with a diameter of ø28 mm to 38 mm or less rather than the indirect cold-heat transfer method in which the copper pipe is cooled by cooling the aluminum plate, the aluminum fin of the indirect cooling method is It is to provide an air-cooled gas cooler for a refrigeration compressor that can save energy by reducing the size of the housing and reducing the number of cooling blowers because the overall volume and cooling area are reduced without it.

The present invention to solve the above problems

a housing having an outdoor unit main body in a box shape and having a fan formed on one side of the main body;

* An outer copper pipe that surrounds the inner copper pipe and the inner copper pipe disposed inside the housing and forms a space spaced inside to form a double pipe by winding the spiral corrugated pipe at intervals of 3 mm or less and seating the flow path in a diagonal direction. formed heat exchange unit; and

Comprising a corrugated copper pin spirally disposed between the inner copper pipe and the outer copper pipe

An air-cooled gas cooler for refrigeration compressors is provided.

In the air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention, the heat exchange part may be characterized in that both sides of the inner copper pipe are closed to prevent refrigerant from flowing into the inner copper pipe.

In the air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention, the heat exchange part further includes an inlet hole through which the refrigerant flows into one side of the outer copper pipe and a discharge hole through which the refrigerant is discharged to the other side of the outer copper pipe. It can be characterized as doing.

In the air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention, the outer copper pipe may be formed with an outer diameter of ø28 mm to 38 mm.

In the air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention, the copper fins are spaced apart at intervals of 3 mm or less when they are spirally wound around the inner copper pipe by corrugating a plate portion formed to a predetermined thickness to form a diagonal path Forming a wrinkle portion; and a contact portion in which one side of the corrugated portion contacts the outer surface of the inner copper pipe and the other side of the corrugated portion contacts the inner surface of the outer copper pipe so that the refrigerant can pass along the diagonal flow path. can

In the air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention, when the refrigerant flows into one side of the outer copper pipe, the corrugated portion conducts cold and heat from the outer copper pipe that is primarily cooled by the rotation of the fan. It may be characterized in that the refrigerant is cooled.

The air-cooled gas cooler for a refrigeration compressor according to the present invention forms a diagonal flow path by winding a corrugated copper pin spirally between an inner copper pipe and an outer copper pipe so as to form a certain interval, and saddles the heated refrigerant flowing into the outer copper pipe. When the outer copper pipe is first cooled by the rotation of the fan, the copper fin conducts cold heat to cool the refrigerant, which has an advantage of high cooling efficiency.

In addition, the air-cooled gas cooler for a refrigeration compressor according to the present invention forms a corrugated portion to form a diagonal flow path in which corrugated copper fins spiral, so that the cross-sectional area of contact of the refrigerant introduced into the outer copper pipe formed with an outer diameter of ø28 mm to 38 mm There is an advantage in rapidly cooling the hot refrigerant because the cold heat of the outer copper pipe is quickly conducted by widening the outer copper pipe.

In addition, the air-cooled gas cooler for refrigeration compressors according to the present invention is indirect cooling in which a copper pipe having an outer diameter of 6 to 8 mm, which is a cooling method of an existing condenser, is formed in a hole inside an aluminum plate, and after expansion of the saddle, the aluminum plate is cooled by a blowing fan. As the direct cooling method is more efficient than the cooling method, the size of the housing can be reduced, so there is an advantage in that it can be manufactured in a smaller size than existing products.

In addition, since the size of the housing is made small, the installation area can be reduced, and the rotational speed of the cooling and blowing fan is reduced due to the small blowing area, so power consumption is reduced and the number of cooling and blowing fans can be reduced, so energy can be saved. there is.

1 is a perspective view schematically showing the appearance of an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention.

Figure 2 is an exploded perspective view shown in Figure 1 is disassembled.

3 is a perspective view showing a copper pin of an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention.

4 is a side view showing an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention from one side.

5 is an exemplary view showing a state in which a corrugated copper fin of an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention is formed in a spiral shape.

6 is an exemplary view showing a comparison between an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention and the prior art.

7 and 8 are photographs showing an actual product of an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention.

Hereinafter, preferred embodiments in which a person skilled in the art can easily practice the present invention will be described in detail with reference to the accompanying drawings. However, in the detailed description of the operating principle of the preferred embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

In addition, the same reference numerals are used for parts having similar functions and actions throughout the drawings.

In addition, when a part is said to be 'connected' to another part in the entire specification, this includes not only the case where it is directly connected but also the case where it is indirectly connected with other components intervening therebetween. In addition, 'including' a certain component means that other components may be further included without excluding other components unless otherwise stated.

Hereinafter, an air-cooled gas cooler for a refrigeration compressor according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view schematically showing the appearance of an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing FIG. 1 by disassembling it, and FIG. 3 is a refrigeration compressor according to an embodiment of the present invention. Figure 4 is a side view showing an air-cooled gas cooler for a refrigeration compressor according to an embodiment of the present invention from one side, Figure 5 is an air-cooled gas for a refrigeration compressor according to an embodiment of the present invention. It is an exemplary view showing a state in which the corrugated copper fin of the cooler is formed in a spiral shape, and FIG. 6 is an exemplary view showing a comparison between an air-cooled gas cooler for a refrigerating compressor according to an embodiment of the present invention and the prior art, and FIGS. 7 and 8 are an exemplary view of the present invention. It is a photograph showing the actual product of the air-cooled gas cooler for refrigeration compressors according to the embodiment.

1 and 2, the air-cooled gas cooler 10 for a refrigeration compressor according to an embodiment of the present invention includes a housing 100, a heat exchange unit 200, and a corrugated fin 300.

More specifically, as shown in FIGS. 1 and 2 , the air-cooled gas cooler 10 for a refrigeration compressor according to an embodiment of the present invention has an outdoor unit body 110 formed in an enclosure shape, and a fan is disposed on one side of the body. The housing 100 in which 120 is formed, the inner copper pipe 210 disposed inside the housing, and the inner copper pipe are surrounded and spaced apart inside is formed to wind the spiral corrugated pipe at intervals of 3 mm or less so that the flow path runs in a diagonal direction. It includes a heat exchange unit 200 formed of an outer copper pipe 220 that is seated to form a double pipe, and a corrugated copper fin 300 spirally disposed between the inner copper pipe and the outer copper pipe.

Referring to FIG. 1 , the housing 100 is formed of a box-shaped outdoor unit body 110 having a space formed therein, and a fan 120 capable of blowing air is formed on one side.

At this time, the housing 100 forms a suction port capable of sucking external air on the other side, and external air is introduced into the inside through the suction port by rotation of the fan 120 . And discharged to one side of the housing (100).

In particular, the housing 100 is wider than the housing of a general outdoor unit of an indirect cooling method in which an aluminum plate is cooled and then the cooled aluminum plate cools the copper plate due to a simple structure composed of only a heat exchanger 200 and a copper fin 300 to be described later. It can be manufactured in a small size with a low length and height.

2 and 5, the heat exchange unit 200 surrounds the inner copper pipe 210 and the inner copper pipe 210 disposed inside the housing 100 and forms a space spaced apart therein to form a spiral corrugated pipe. It is formed of an outer copper pipe 220 that winds at intervals of 3 mm or less and forms a double pipe by saddled in a diagonal direction.

In particular, the heat exchange unit 200 preferably closes both sides of the inner copper pipe 210 to prevent refrigerant from flowing into the inner copper pipe 210 .

Due to this, the heat exchange unit 200 prevents refrigerant from flowing into the inner copper pipe 210, and a corrugated copper fin 300 is installed between the outer copper pipe 220 and the inner copper pipe 210 to be described later. It is installed in a spiral diagonal shape, but the interval between the corrugated copper fins 300 constituting the spiral is set to 3 mm or less so that the refrigerant can flow in so that the flow path of the refrigerant can pass only between the diagonally wound corrugated copper fins 300.

At this time, since the outer copper pipe 220 is cooled by rotation of the fan, it is possible to cool the refrigerant more quickly.

For example, in a typical outdoor unit, a refrigerant pipe is connected to a copper pipe so that the refrigerant flows into the copper pipe. Then, the aluminum plate is cooled by the rotation of the blowing fan, and the copper pipe is cooled and heated by the cooled aluminum plate, so that the refrigerant is circulated and transported inside the copper pipe.

Referring to Figures 2 and 3, the outer copper pipe 220 is a pipe that surrounds the inner copper pipe 210 and forms a spaced space inside to form a double pipe.

In particular, the outer copper pipe 220 is formed with a larger diameter than the inner copper pipe 210 so that the refrigerant can flow into the inside.

To this end, the outer copper pipe 220 is preferably formed with an outer diameter of ø28 mm to 38 mm.

Meanwhile, as shown in FIG. 2 , in the air-cooled gas cooler 10 for a refrigerating compressor according to an embodiment of the present invention, the heat exchange unit 200 further includes an inlet hole 230 and a discharge hole 240.

The inflow hole 230 is a hole through which the refrigerant flows into one side of the outer copper pipe 220, and the hot refrigerant flows in and moves along the inside of the outer copper pipe 220.

The discharge hole 240 is a hole through which the refrigerant is discharged to the other side of the outer copper pipe 220, and the outer copper pipe 220 is primarily cooled by the rotation of the fan 120 formed on one side of the housing 100. It serves to discharge the refrigerant cooled by the cooling heat of the

Referring to FIGS. 2 and 3 , the corrugated copper pin 300 is spirally disposed between the inner copper pipe 210 and the outer copper pipe 220 . And it serves to more quickly cool the refrigerant located inside the outer copper pipe 220.

To this end, the corrugated pin 300 further includes a corrugated portion 310 and a contact portion 320 .

As shown in FIGS. 3 and 5, the corrugated portion 310 corrugates the plate portion formed to a predetermined thickness and is spaced apart at intervals of 3 mm or less when spirally wound around the inner copper pipe 210 to form a diagonal flow path. form

Here, the corrugation part 310 is arranged in a ring shape on the inner circumferential surface of the outer copper pipe 220 along the center of the circle to increase the contact cross-sectional area of the refrigerant flowing into the outer copper pipe 220.

In the contact portion 320, one side of the corrugated portion 310 contacts the outer surface of the inner copper pipe 210 and the other side of the corrugated portion 310 contacts the inner surface of the outer copper pipe 220 so that the refrigerant is formed in a diagonal shape. It serves to allow passage along the flow path.

The contact portion 320 forms a radially partitioned space from the center of the circle, and the refrigerant introduced through the inflow hole 230 is cooled while being transported through each partitioned space.

As such, the corrugated copper fin 300 is, as shown in FIG. 3 (c) and FIG. 5, when the refrigerant flows into one side of the outer copper pipe 220, the outer copper pipe is primarily cooled by the rotation of the fan 120. The corrugated portion 310 from 220 serves to cool the refrigerant by conducting cold heat.

That is, in the copper pin 300, the plate of the part in contact with the outer circumferential surface of the inner copper pipe 210 and the part in contact with the inner circumferential surface of the outer copper pipe 220 are located radially from the center of the circle. Then, a wall is formed in a zigzag direction between the inner copper pipe 210 and the outer copper pipe 220.

At this time, a space partitioned radially from the center of the circle is formed by the contact portion 320, and the refrigerant introduced through the inlet hole 230 is cooled while being transported through each partitioned space.

In particular, as shown in FIG. 4 , when external air is introduced into the housing 100 while the fan 120 rotates, the external air primarily cools the outer copper pipe 220, and the primarily cooled outer The copper pipe 220 conducts cold heat to the copper fin 300 .

Due to this, the wrinkles 310 conduct cold heat to the refrigerant, and the heat-exchanged refrigerant moves through the discharge hole 240 .

For example, as shown in (a) of FIG. 6, the corrugated copper pin 300 is spirally wound around the inner copper pipe 210 at regular intervals of 1 to 3 mm. Due to this, the flow path of the corrugated fin 300 is installed in a diagonal direction so that the refrigerant gas passes through the corrugated fin 300 while continuously contacting the corrugated fin 300, thereby increasing the heat dissipation area and increasing the cooling efficiency.

On the other hand, as shown in (b) of FIG. 6, the prior art has a structure in which the number of corrugated pins is small and installed in a straight line, so that the passing fluid passes through without contacting the corrugated pins. As a result, the heat dissipation area is small, and the cooling efficiency is reduced.

In particular, in the prior art, a hole of 8 to 10ㅨ is drilled in an aluminum plate, and a copper pipe formed with an outer diameter of 8 to 10ㅨ is inserted into the hole to expand and close the hole. In addition, it is an indirect cooling method in which the refrigerant circulates in the copper pipe and cools the circulating refrigerant by blowing air from the blower to the aluminum fin to cool the copper pipe.

As described above, the detailed description of the present invention has been described with respect to the preferred embodiments of the present invention, but this is the best embodiment of the present invention described by way of example, but does not limit the present invention. In addition, it is of course possible for anyone having ordinary knowledge in the technical field to which the present invention belongs to various modifications and imitations without departing from the scope of the technical idea of the present invention.

Therefore, the scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms of embodiments within the scope of the appended claims. And without departing from the subject matter of the present invention claimed in the claims, anyone with ordinary knowledge in the art to which the invention pertains is considered to be within the scope of the claims of the present invention to various extents that can be modified.

Claims

a housing having an outdoor unit main body in a box shape and having a fan formed on one side of the main body;

It is formed of an inner copper pipe disposed inside the housing and an outer copper pipe that surrounds the inner copper pipe and forms a space spaced inside so that the spiral corrugated pipe is wound at intervals of 3 mm or less and the flow path is saddled in a diagonal direction to form a double pipe. heat exchange unit; and

Including a corrugated copper pin spirally disposed between the inner copper pipe and the outer copper pipe,

The heat exchange part is characterized in that both sides of the inner copper pipe are closed to prevent the refrigerant from flowing into the inner copper pipe.

Air-cooled gas cooler for refrigeration compressors.
According to claim 1,

The heat exchange part

Characterized in that it further comprises an inlet hole through which the refrigerant flows into one side of the outer copper pipe and a discharge hole through which the refrigerant is discharged to the other side of the outer copper pipe.

Air-cooled gas cooler for refrigeration compressors.
According to claim 1,

Characterized in that the outer copper pipe is formed with an outer diameter of ø28 mm to 38 mm

Air-cooled gas cooler for refrigeration compressors.
According to claim 1,

The corrugated pin is

Corrugated parts formed with a predetermined thickness and spaced apart at intervals of 3 mm or less to form a diagonal flow path when spirally wound around the inner copper pipe; and

One side of the corrugated portion is in contact with the outer surface of the inner copper pipe, and the other side of the corrugated portion is in contact with the inner surface of the outer copper pipe to allow the refrigerant to pass along the diagonal flow path Further comprising a contact portion

Air-cooled gas cooler for refrigeration compressors.
According to claim 4,

The corrugated pin is

Characterized in that when the refrigerant flows into one side of the outer copper pipe, the corrugated portion cools and heats the refrigerant from the outer copper pipe that is primarily cooled by the rotation of the fan.

Air-cooled gas cooler for refrigeration compressors.