KR20190097721A - Heat exchanger having inclination fin for reduced installation area - Google Patents

Abstract

The present invention relates to a heat exchanger provided with a heat exchange pin with an inclination angle for a reduced installation area, and more specifically, to a heat exchanger of an air conditioner provided with a heat exchange pin (20) having a plurality of refrigerant pipes (10) and a plurality of slits (21) coupled to the outer circumferential surface of the refrigerant pipes (10). The refrigerant pipes (10) and the slits (21) are formed in an oval shape having a long shaft (10a, 21a) and short shaft (10b, 21b). The long shaft (21a) of the slits (21) has an inclination angle of θ with respect to a horizontal end portion (22) of the heat exchange pin (20). The horizontal end portion (22) has an inclination angle of θ to θ + 30° with respect to an external air introduction direction. The refrigerant pipes (10) are coupled to the slits (21) such that the long shaft (10a) may have an angle of 0° to 30° with respect to the external air introduction direction. Therefore, the horizontal end portion of the heat exchange pin has an inclination angle of θ to θ + 30° with respect to the external air introduction direction, thereby reducing the installation area of the heat exchanger and allowing the heat exchanger to be installed even in a limited space. Furthermore, when the long shaft of the slits has an inclination angle of θ with respect to the horizontal end portion of the heat exchange pin, the horizontal end portion of the heat exchange pin is adjusted to have an inclination angle of θ to θ + 30° with respect to the external air introduction direction, thereby allowing the long shaft of the refrigerant pipes to have an angle of 0° to 30° with respect to the external air introduction direction. Resultantly, the present invention can be utilized for all heat exchange operations under various conditions.

Description

Heat exchanger having inclination fin for reduced installation area

The present invention is a heat exchanger for an air conditioner including a plurality of refrigerant pipes and heat exchange fins having a plurality of slits coupled on an outer circumferential surface of the refrigerant pipe, and the refrigerant tube and the slits are formed in an oval shape, The present invention relates to a heat exchanger to which an inclination angle is applied to reduce an installation area to reduce space pressure by maintaining an inclination angle at the same time to reduce an installation area and to maintain a cooling capacity.

Generally, a heat exchanger is a device used for a heater, a cooler, an evaporator, a condenser, etc., and is a device for achieving heat exchange between a fluid circulating inside a heat pipe and a gas flowing outside of the heat pipe. Such heat exchangers include main type, double tube type, fin tube type and bushing type.

Among these, the fin tube type heat exchanger is composed of a plurality of heat exchange fins which are spaced apart at predetermined intervals in the longitudinal direction of each of the refrigerant pipes connected to each end, and the plurality of heat exchange fins. Fluid circulating inside performs mutual heat exchange.

1 is a view illustrating a conventional heat exchange fin having a plurality of slit cross sections in which a plurality of refrigerant pipes are inserted and coupled, and a vertical end of the heat exchange fin having an angle of 90 degrees with respect to the air flowing in horizontally. .

Such a conventional heat exchange fin has a plurality of slits into which a plurality of refrigerant tubes are fitted and coupled, as shown in FIG. 1, and the plurality of refrigerant tubes or the plurality of slit cross sections have a circular shape and a vertical end of the heat exchange fins. Since the cross section is larger than 90 degrees in relation to the air flowing horizontally, there is a preferable aspect in terms of heat exchange efficiency. However, in the case of the conventional heat exchanger having an angle of 90 degrees in relation to the air flowing horizontally in the vertical end of the heat exchange fin, the cross-sectional area is large and the installation area of the heat exchanger becomes large and it is difficult to install the heat exchanger in a narrow place. There was.

In addition, in the past, many refrigerant pipes were generally circular in cross section. However, many refrigerant pipes have a circular cross-sectional shape, and the air is peeled off while causing turbulence from the rear, based on the air flow direction, so that the resistance of the air is increased and air is provided on the rear side of the circular refrigerant pipe. Is not in direct contact with the refrigerant pipe. The heat exchanger using a refrigerant pipe having a circular cross section has a problem in that air cannot pass well due to fluid resistance, not only stagnates inside the heat exchanger, but also has a small area in which air directly contacts the refrigerant pipe, resulting in a poor heat exchange efficiency.

In order to solve this problem, the Republic of Korea Patent Publication (Publication No .: 10-2011-0043744) "Elliptical heat exchanger manufacturing method" in the shape of the pipe is deformed to oval to reduce the pressure loss compared to the pipe of the circular cross section, In the case of "Elliptical Heat Exchanger Manufacturing Method", the heat exchanger is installed in a narrow place because the installation area of the heat exchanger is large because there is no difference from the conventional heat exchanger having an angle of 90 degrees in relation to the air flowing vertically at the vertical end of the exchange pin. The problem remains that it is difficult to install. In addition, the conventional "elliptic heat exchanger manufacturing method" has a problem that it is difficult to be utilized in heat exchange operation of various conditions because the long axis of the elliptical pipe is fixed to always have a 0 ° angle with the external air inflow direction.

Republic of Korea Patent Publication (Publication No .: 10-2011-0043744) "Method for manufacturing elliptic heat exchanger"

In order to solve the problems of the prior art as described above, an object of the present invention is to reduce the installation area of the heat exchanger so that the horizontal end of the heat exchange fin has an inclination angle of θ ~ θ + 30 ° with the external air inflow direction It is to provide a heat exchanger with an inclination angle to reduce the installation area that can be installed even in a narrow place.

Still another object of the present invention is to adjust the horizontal end of the heat exchange fin to have an inclination angle of θ to θ + 30 ° with the external air inflow direction when the long axis of the slit has the horizontal end of the heat exchange fin and the angle of inclination θ. It is to provide a heat exchanger with an inclination angle to reduce the installation area that can be used for all of the heat exchange operation under various conditions by making the long axis to the angle of 0 ° ~ 30 ° with the external air inflow direction.

Still another object of the present invention is to adjust the horizontal end of the heat exchange fin to have an inclination angle of θ to θ + 30 ° even after the long axis of the slit is fixed to have an inclination angle of θ with the horizontal end of the heat exchange fin. Through a simple process, the long axis of the refrigerant pipe of the heat exchanger can have various angles from 0 ° to 30 ° with the external air inflow direction, so that various heat exchangers can be manufactured by using a single heat exchange fin. It is to provide a heat exchanger with an inclination angle in order to reduce the footprint.

Still another object of the present invention is to adjust the horizontal end of the heat exchange fin to have an inclination angle of θ to θ + 30 ° even after the long axis of the slit is fixed to have an inclination angle of θ with the horizontal end of the heat exchange fin. Since the long axis of the refrigerant pipe of the heat exchanger can have various angles from 0 ° to 30 ° with the external air inflow through a simple process, it is possible to manufacture a variety of heat exchangers by using a single heat exchange fin. An object of the present invention is to provide a heat exchanger having an inclination angle for simplifying the installation area.

Still another object of the present invention is to adjust the horizontal end of the heat exchange fin to have an inclination angle of θ to θ + 30 ° with the external air inflow direction when the long axis of the slit has the horizontal end of the heat exchange fin and the angle of inclination θ. It is to provide a heat exchanger with an inclination angle that can be utilized for all of the heat exchange operation under various conditions and at the same time reducing the installation area by making the long axis at an angle of 0 ° to 30 ° with the external air inflow direction.

In order to achieve the above object, the heat exchanger having the inclined angle of the heat exchange fin according to the present invention having an inclined angle reduced in number of slits 21 coupled to the plurality of refrigerant pipes 10 and the outer circumferential surface of the refrigerant pipe 10. In the heat exchanger for an air conditioner including a heat exchange fin 20 having a), the refrigerant pipe 10 and the slit 21 is an oval having a long axis (10a, 21a) and a short axis (10b, 21b), The major axis 21a of the slit 21 has an inclination angle of θ with the horizontal end 22 of the heat exchange fin 20, and the horizontal end 22 has an inclination angle of θ to θ + 30 ° with an external air inflow direction. The refrigerant pipe 10 is characterized in that the long axis (10a) is coupled to the slit (21) so as to form an angle of 0 ° ~ 30 ° with the external air inlet direction.

According to the present invention has the following effects.

First, the heat exchanger in which the heat exchange fin of the present invention has an inclination angle and the installation area is reduced, so that the horizontal end of the heat exchange fin has an inclination angle of θ to θ + 30 ° with the external air inflow direction, thereby reducing the installation area of the heat exchanger and making it a narrow place. Even heat exchanger can be installed.

Second, the heat exchanger of the present invention, the heat exchange fin having an inclination angle, the installation area is reduced, when the long axis of the slit has the inclination angle of the horizontal end of the heat exchange fin and the angle of θ, the horizontal end of the heat exchange fin and the outside air inlet direction and θ ~ θ +30 By adjusting the angle of inclination of °, the long axis of the refrigerant pipe forms an angle of 0 ° to 30 ° with the direction of external air inflow, thereby having an effect that can be utilized for both heat exchange operation under various conditions.

Third, in the heat exchanger in which the heat exchange fin of the present invention has an inclination angle and the installation area is reduced, even after the long axis of the slit is fixed so that the horizontal end of the heat exchange fin has an inclination angle of θ, the heat exchange fin has a horizontal end portion θ to θ. Through the simple process of adjusting the inclination angle to + 30 °, the long axis of the refrigerant pipe of the heat exchanger can have various angles from 0 ° to 30 ° with the external air inflow direction. Since it is possible to manufacture, the manufacturing cost of the heat exchanger is reduced.

Fourth, in the heat exchanger of which the heat exchange fin of the present invention has an inclination angle and the installation area is reduced, even after the long axis of the slit is fixed so that the horizontal end of the heat exchange fin has an inclination angle of θ, the heat exchange fin has a horizontal end portion θ to θ. Through the simple process of adjusting the inclination angle to + 30 °, the long axis of the refrigerant pipe of the heat exchanger can have various angles from 0 ° to 30 ° with the external air inflow direction. It is possible to manufacture the effect of simplifying the manufacturing process of the heat exchanger.

1 is a view illustrating a conventional heat exchange fin having a plurality of slit cross sections in which a plurality of refrigerant pipes are inserted and coupled, and a vertical end of the heat exchange fin having an angle of 90 degrees with respect to the air flowing in horizontally. .
2 is a heat exchanger in which the heat exchange fin of the present invention has an inclined angle and the installation area is reduced, and the refrigerant pipe 10 and the slit 21 are elliptical having long axes 10a and 21a and short axes 10b and 21b. 21 is a view showing that the long axis 21a has an inclination angle of θ with the horizontal end 22 of the heat exchange fin 20.
3 shows that when the long axis 21a of the slit 21 has θ with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 has an inclination angle of θ to θ + 30 ° with the external air inflow direction. The refrigerant tube 10 is a view showing that the refrigerant tube 10 is coupled to the slit 21 such that the major axis 10a has an angle of 0 ° to 30 ° with the external air inflow direction.
4 is a view showing the arrangement of a plurality of heat exchange fins 20 arranged in a V-shape (V) having an angle of 60 ° to 120 °.

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

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. On the basis of this, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the configuration shown in the embodiments and drawings described in the specification of the present invention is only the most preferred embodiment of the present invention and does not represent all of the technical idea of the present invention, it is replaced at the time of filing the present invention It will be appreciated that various equivalents and variations are possible or possible.

The present invention provides a tilt angle of θ to θ + 30 ° to the horizontal end 22 of the heat exchange fin 20 in order to increase space efficiency in an air conditioner or a cold water coil in a clean room where a fincoil heat exchanger is installed. Considering the cooling efficiency by minimizing and reducing the fan power, the slant 21 is completed by giving an inclination angle of θ corresponding to the inclination angle of the horizontal end portion 22 on the long axis 21a.

Fincoil heat exchanger has a lot of changes in the flow and heat exchange capacity of the air according to the shape of the refrigerant pipe 10, generally fincoil heat exchanger is a heat exchange fin 20 is installed vertically, the elliptical refrigerant pipe 10 is It is often used because it has the advantage of low pressure loss. However, in the case of installing the inclined angle to the heat exchange fin 20 to reduce the installation area of the heat exchanger, the flow of air is changed according to the shape of the refrigerant tube 10, so that the static pressure loss of the heat exchanger of the elliptical refrigerant tube 10 is changed. . Therefore, the heat exchanger of the elliptical refrigerant pipe 10 installed at an inclined angle to the horizontal end 22 of the heat exchange fin 20 needs to adjust the angle of the slit 21 to which the refrigerant pipe 10 is coupled. Accordingly, the present inventors fix the angle of the slit 21 to which the elliptical refrigerant tube 10 is coupled first, and according to the angle of the fixed slit 21, the inclination angle larger than the angle of the fixed slit 21 is exchanged. Given to the horizontal end 22 of the fin 20 to enable a variety of heat exchange operations. That is, after the angle of the slit 21 to which the elliptical refrigerant pipe 10 is coupled is first fixed to θ, only the angle of θ corresponding to the angle of the fixed slit 21 is horizontally end 22 of the heat exchange fin 20. In the case of, the heat exchange is performed in the state where the pressure loss is the smallest. Furthermore, when the angle of the slit 21 to which the elliptical refrigerant pipe 10 is coupled is first fixed to θ, then an inclination angle greater than the θ angle of the fixed slit 21 is applied to the horizontal end portion 22 of the heat exchange fin 20. For example, the long axis 10a of the refrigerant pipe 10 may have an angle of more than 0 ° and less than 30 ° with the external air inflow direction, in which case the pressure loss increases, but the inflow rate of the external air decreases. Since the heat exchange is made, various heat exchange operations are possible.

In the heat exchanger for an air conditioner including a plurality of refrigerant pipes (10) and heat exchange fins (20) having a plurality of slits (21) coupled on the outer circumferential surface of the refrigerant pipe (10), 10) and the slit 21 is an oval having long axes 10a and 21a and short axes 10b and 21b, and the long axis 21a of the slit 21 is a horizontal end 22 of the heat exchange fin 20 and θ. Since the horizontal end portion 22 has an inclination angle of θ to θ + 30 ° with the external air inflow direction, the refrigerant pipe 10 has the long axis 10a of the external air inflow direction with 0 ° to 30 °. It is characterized in that coupled to the slit 21 to achieve an angle of °.

2 is a heat exchanger in which the heat exchange fin of the present invention has an inclined angle and the installation area is reduced, and the refrigerant pipe 10 and the slit 21 are elliptical having long axes 10a and 21a and short axes 10b and 21b. 21 is a view showing that the long axis 21a has an inclination angle of θ with the horizontal end 22 of the heat exchange fin 20. When the long axis 21a of the slit 21 has an inclination angle of θ with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 may have an inclination angle of θ to θ + 30 ° with the external air inflow direction. In this case, the refrigerant pipe 10 is coupled to the slit 21 so that the long axis (10a) can form an angle of 0 ° to 30 ° with the external air inflow direction. 3 shows that when the long axis 21a of the slit 21 has θ with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 has an inclination angle of θ to θ + 30 ° with the external air inflow direction. The refrigerant pipe 10 is a view showing that the refrigerant pipe 10 is coupled to the slit 21 such that the major axis 10a has an angle of 0 ° to 30 ° with the external air inflow direction.

When the long axis 21a of the slit 21 has an inclination angle of 30 ° with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 may have an inclination angle of 30 ° to 60 ° with the external air inflow direction. In this case, the refrigerant pipe 10 is coupled to the slit 21 so that the long axis (10a) can form an angle of 0 ° to 30 ° with the external air inflow direction. In this case, however, there is a problem in that a static pressure loss occurs when the horizontal end portion 22 has an inclination angle exceeding 30 ° with the external air inflow direction.

When the long axis 21a of the slit 21 has an inclination angle of 45 ° with the horizontal end portion 22 of the heat exchange fin 20, the horizontal end portion 22 may have an inclination angle of 45 ° to 75 ° with the external air inflow direction. In this case, the coolant pipe 10 is coupled to the slit 21 so that the long axis 10a may form an angle of 0 ° to 30 ° with the external air inflow direction. However, in this case, since the horizontal end 22 may have an inclination angle exceeding 60 ° with the external air inflow direction, space efficiency may decrease and static pressure loss may increase.

When the long axis 21a of the slit 21 has an inclination angle of 60 ° with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 may have an inclination angle of 60 to 90 ° with an external air inflow direction. In this case, the coolant pipe 10 is coupled to the slit 21 so that the long axis 10a may form an angle of 0 ° to 30 ° with the external air inflow direction. However, in this case, since the horizontal end portion 22 has an inclination angle exceeding 60 ° with the external air inflow direction, space efficiency may decrease and static pressure loss may increase.

The plurality of slits 21 should be arranged so that three slit centers 21c form a triangle, and forming an equilateral triangle is preferable in view of heat exchange efficiency.

When there are a plurality of heat exchange fins 20, the vertical ends 23 are preferably arranged in a V-shape (V). 4 is a view showing the arrangement of a plurality of heat exchange fins 20 arranged in a V-shape (V) having an angle of 60 ° to 120 °. According to FIG. 4, when the horizontal ends 22 of the two heat exchange fins 20 have an inclination angle of 30 ° to 60 ° with the external air inflow direction, the vertical ends 23 of the two heat exchange fins 20 are 60 °. It turns out that it arrange | positions in the v-shape (V) which has -120 degrees. In general, when the horizontal ends 22 of the two heat exchange fins 20 have an inclination angle of θ to θ + 30 ° with the external air inflow direction, the vertical ends 23 of the two heat exchange fins 20 are 2θ to 2θ. It can be seen that it is arranged in a V-shape (V) having + 60 °.

Furthermore, when the long axis 21a of the slit 21 has an inclination angle of 30 ° with the horizontal end 22 of the heat exchange fin 20, the horizontal end portion 22 has an inclination angle of 30 ° with the external air inflow direction, so that the refrigerant pipe The refrigerant pipe 10 may be coupled to the slit 21 so that the long axis 10a of the 10 may form an angle of 0 ° with the external air inflow direction. In addition, when the long axis 21a of the slit 21 has an inclination angle of 30 ° with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 has an inclination angle of 45 ° with the external air inflow direction and thus has a coolant tube ( The refrigerant pipe 10 may be coupled to the slit 21 so that the long axis 10a of 10) may form an angle of 15 ° with the external air inflow direction. Furthermore, when the long axis 21a of the slit 21 has an inclination angle of 30 ° with the horizontal end 22 of the heat exchange fin 20, the horizontal end 22 has an inclination angle of 60 ° with the external air inflow direction and the coolant tube ( The refrigerant pipe 10 may be coupled to the slit 21 so that the long axis 10a of the 10) forms an angle of 30 ° with the external air inflow direction.

Comparative Example 1

The horizontal end 22 of the heat exchange fin 20 is horizontal to the ground and the vertical coil 23 is installed on the ground perpendicular to the circular coil and the elliptical refrigerant pipe 10 comparison

Fincoil heat exchanger has a lot of changes in the flow and heat exchange capacity of the air according to the shape of the refrigerant pipe 10, the vertical fincoil heat exchanger is generally installed in the elliptical refrigerant pipe 10 is less pressure loss than the circular refrigerant pipe There is an advantage.

Sample-Coil Spec: 1/2 “X 2R X 10S X 340.8mm (AHRI Standard 410-2001)

Air inflow: heat exchanger horizontal

Mounting angle: the horizontal end 22 is 0 ° to the ground, and the vertical end 23 is 90 ° to the ground Round refrigerant tube Elliptical Refrigerant Pipe (10) Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,100 8.52 1,088 6.9 29 1,230 12.9 1,215 9.9 35 1,288 17.7 1,314 11.4

Comparing the static pressure loss shown in [Table 1], the elliptical refrigerant pipe 10 has only a static pressure loss of 23CMM: 81%, 29CMM: 77%, 35CMM: 64%, and cools according to the change of air volume. The capacity is comparable in 23CMM and 29CMM, and the cooling capacity of the elliptical refrigerant tube 10 is slightly superior in 35CMM with increased air volume. The elliptical refrigerant tube 10 is currently applied to a number of sites as an energy-saving item, and because the flow of air flows smoothly along the surface of the refrigerant tube 10, the heat exchange efficiency is high and the air resistance is small. We believe the results were derived. Small static pressure loss of the elliptical refrigerant pipe 10 is a field (semiconductor factory) that uses a large amount of blowing power, in order to reduce the blowing power is applied to the elliptical refrigerant pipe (10) with a low static pressure loss, air conditioning that current energy consumption is reduced It is attracting attention as an item.

The necessity of heat exchanger installation is increasing according to the site conditions requiring the floor installation area to be minimized. In recent air-conditioning systems, there is a strong tendency to save energy and minimize installation space, and by applying low-temperature systems such as ice heat storage systems to reduce the duct size to increase the effective floor height of buildings and increase the effective floor space. It is applied as a customized system according to the site conditions, such as how to apply the floor air conditioning system to increase. Clean room facilities are also required to save energy and minimize the installation area of air conditioning facilities. Apart from minimizing the installation area, the cooling capacity of the heat exchanger should be maintained sufficiently, so it is necessary to secure the heat transfer area by giving the heat exchanger an inclination angle at the installation site.

The circular refrigerant pipe is not significantly affected by the inclination angle of the installation site, but the elliptical refrigerant pipe 10 is much influenced by the inclination angle of the installation site because of its unique elliptical shape. In order to apply the elliptical refrigerant pipe 10 excellent in energy saving to the inclination angle, a separate technology is required for the installation site, the present invention is to achieve the problem.

Example 1

Mounting angle: the horizontal end 22 is 30 ° to the ground and the vertical end 23 is 60 ° to the ground Round refrigerant tube Elliptical Refrigerant Pipe (10) Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,089 9.6 1,072.2 7.6 29 1,219.5 14.3 1,186 11.5 35 1,288.4 20.5 1,282.2 15.7

Example 2

Mounting angle: the horizontal end 22 is 45 ° to the ground and the vertical end 23 is 45 ° to the ground Round refrigerant tube Elliptical Refrigerant Pipe (10) Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,073.5 11 1,056.4 9.5 29 1,201.5 18.2 1,168.5 14.4 35 1,263.2 23.1 1,257.1 18.1

Example 3

Mounting angle: the horizontal end 22 is 60 ° to the ground and the vertical end 23 is 30 ° to the ground Round refrigerant tube Elliptical Refrigerant Pipe (10) Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,047 14.2 1,030.6 12.2 29 1,172.2 21.3 1,140 18.6 35 1,232.4 26.7 1,152 23.1

 Comparing the data installed on the installation site with the inclination angle of the heat exchanger based on the vertically installed circular refrigerant tube and the elliptical refrigerant tube 10 in Table 1 as follows.

First, the cooling capacity of the circular refrigerant tube is maintained almost equal at the installation inclination angle of 60 degrees, 97-98% at 45 degrees, 95% at 30 degrees. The elliptical refrigerant tube 10 has a cooling capacity of 97 to 98% at 60 degrees, 95 to 97% at 45 degrees, and 88 to 95% at 30 degrees, thereby cooling the elliptical refrigerant tube 10 compared to the circular refrigerant tube. It can be seen that the capacity reduction is greatly reduced with the installation inclination angle.

Secondly, the static pressure loss has a distribution of 111% to 167% in the circular refrigerant pipe as the static pressure loss increases as the installation inclination angle moves away from the vertical. The elliptical refrigerant pipe 10 has a much larger increase in the static pressure loss than the circular refrigerant pipe, and shows a distribution of 110% to 203%.

The data of [Table 2], [Table 3] and [Table 4] of the circular refrigerant tube and the elliptical refrigerant tube 10 which are installed by giving an inclination angle to the installation angle are as follows. In comparison, although the cooling capacity of the circular refrigerant tube is slightly superior and the static pressure loss is given by the inclination angle, it can be seen that the elliptical refrigerant tube 10 is smaller than the circular refrigerant tube. Compared to the case of vertical installation, the elliptical refrigerant pipe 10 can be seen that the data of the cooling capacity and the static pressure loss is extinguished many advantages.

Existing oval refrigerant pipe 10 has a disadvantage in terms of cooling capacity and static pressure loss when installed given the inclination angle according to the installation site conditions, in order to maintain the advantages of the data [Table 1] when installed vertically according to the installation angle Aligning the direction of the elliptical refrigerant tube 10 corresponds to a technical configuration that preserves the advantages of the elliptical refrigerant tube 10 compared to the circular refrigerant tube and maintains the phase of the energy saving item.

In the case of installing the circular refrigerant tube and the elliptical refrigerant tube 10 in a narrow space in order to exhibit the same cooling capacity, the static pressure loss must be large because the circular refrigerant tube is large. What is needed is a way to improve the static pressure loss.

When installing the air conditioner, there is a situation that it is difficult to install as desired due to the limitation of the installation space, depending on the installation space, depending on the installation space. When the heat exchanger of the air conditioner to be installed is inclined in a single diagonal line or inclined in a V or A shape with a double, air is introduced at an inclined angle from the inclined passage and the heat exchanged cold air is transferred to a place requiring cooling. In this process, the heat transfer area to reach the air is reduced by giving an inclination angle in this process, so that the heat transfer area must be added to compensate for the cooling capacity, and the wind speed flows faster, and thus the static pressure is increased.

In order to solve this problem, in the heat exchanger to be inclined, the inclined angle is given to the slit 21 to which the refrigerant pipe 10 is coupled to increase the contact efficiency with the outside air, thereby compacting the heat exchanger with the heat exchanger fin 20 and the inclined angle. Since the space between the elliptical refrigerant pipes 10 is reduced, the air flow rate is increased in the heat exchanger, and the static pressure loss is also significantly increased. Therefore, this inefficient part can be improved by adjusting the angle of the slit.

[Table 5] has the inclined angle of 30 ° with the horizontal end 22 of the heat exchange fin 20 on the long axis 21a of the slit 21 to which the refrigerant pipe 10 is coupled according to the needs of the site, the heat exchange fin The horizontal end 22 of (20) is 30 degrees with the ground and the vertical end 23 is a table which shows the capability of the heat exchanger installed so as to have 60 degrees with the ground. When the horizontal end 22 is 30 ° to the ground and the vertical end 23 is 60 ° to the ground Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) 23 1,103 7.2 29 1,238.3 10.5 35 1,330.4 12.2

Table 6 shows the horizontal end 22 when the cool end 10 has an inclination angle of 30 ° with the horizontal end 22 of the heat exchange fin 20 on the long axis 21a of the slit 21 to which the refrigerant pipe 10 is coupled. 0 ° and the vertical end 23 is 90 ° from the ground, and the horizontal end 22 is 30 ° from the ground, and the vertical end 23 is a table comparing 60 ° with the ground. When the horizontal end 22 is 0 ° to the ground and the vertical end 23 is 90 ° to the ground When the horizontal end 22 is 30 ° to the ground and the vertical end 23 is 60 ° to the ground Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,088 6.9 1,103 7.2 29 1,215 9.9 1,238.3 10.5 35 1,314 11.4 1,330.4 12.2

The horizontal end 22 is 0 ° with the ground and the vertical end 23 is an elliptical refrigerant tube 10 installed at 90 ° with the ground, and the heat exchanger and the horizontal end 22 are 30 ° with the ground, and the vertical end 23 is Examining the data of the heat exchanger with the elliptical refrigerant pipe 10 installed at 60 ° with the ground, the cooling capacity is the elliptical installed with the horizontal end 22 at 0 ° and the vertical end 23 at 90 ° with the ground. The horizontal end portion 22 is 30 ° from the ground relative to the refrigerant tube 10, and the vertical end portion 23 is equal to or greater than 101 to 102% of the heat exchanger of the elliptical refrigerant tube 10 installed at 60 ° from the ground, and the static pressure loss is 104 degrees. Increased to ~ 107%. This is because the horizontal end 22 is 0 ° with the ground, the vertical end 23 is 90 ° with the ground, and the horizontal end 22 is 30 ° with the ground, and the vertical end 23 is with the ground. It can be seen that the elliptical refrigerant pipe 10 installed at and 60 ° increases the contact area, thereby decreasing the By pass factor.

[Table 7] shows that when the horizontal end portion 22 of the heat exchange fin 20 has an inclination angle of 30 ° on the long axis 21a of the slit 21 to which the refrigerant pipe 10 is coupled, the horizontal end portion 22 is grounded. And 60 ° and the vertical end 23 is a table comparing the case where the ground end 22 and the horizontal end 22 is 30 ° and the vertical end 23 is 60 ° with the ground. When the horizontal end 22 is 60 ° to the ground and the vertical end 23 is 30 ° to the ground When the horizontal end 22 is 30 ° to the ground and the vertical end 23 is 60 ° to the ground Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,072.2 7.6 1,103 7.2 29 1,186 11.5 1,238.3 10.5 35 1,282.2 15.7 1,330.4 12.2

The horizontal end 22 is 60 ° with the ground, and the vertical end 23 is 30 ° with the ground, and the horizontal end 22 is 30 ° with the ground, and the vertical end 23 is 60 ° with the ground. Comparing the case, when the horizontal end 22 is 30 ° with the ground and the vertical end 23 is 60 ° with the ground, the cooling capacity is equal to or greater than 103 to 104%, and the static pressure loss is 78 to 95%. It can be seen that the blowing power is reduced by reducing the loss.

Table 8 shows a case where the horizontal end 22 of the heat exchange fin 20 having the slit to which the circular refrigerant pipe is coupled is 30 ° with the ground, and the vertical end 23 is 60 ° with the ground, and the refrigerant pipe 10 is When the horizontal end 22 of the heat exchanger fin 20 has an inclination angle of 30 ° on the long axis 21a of the slit 21 to be joined, the horizontal end 22 is 30 ° from the ground and the vertical end 23 is connected to the ground. Tables comparing the case of 60 °. When the horizontal end 22 of the heat exchange fin 20 having a slit to which the circular refrigerant pipe is coupled is 30 ° with the ground and the vertical end 23 is 60 ° with the ground When the coolant pipe 10 has a 30 ° inclination angle with the horizontal end 22 of the heat exchange fin 20 on the long axis 21a of the slit 21 to which the refrigerant pipe 10 is coupled, the horizontal end 22 is 30 ° with the ground and the vertical end is (23) is installed 60 ° from the ground Air volume (CMM) Cooling capacity (W) Static pressure loss (mmAq) Cooling capacity (W) Static pressure loss (mmAq) 23 1,089 9.6 1,103 7.2 29 1,219.5 14.3 1,238.3 10.5 35 1,288.4 20.5 1,330.4 12.2

The horizontal end 22 of the heat exchange fin 20 having the slit to which the circular refrigerant pipe is coupled is 30 ° with the ground, and the vertical end 23 is 60 ° with the ground, and the slit to which the refrigerant pipe 10 is coupled. When the inclined angle of 30 ° with the horizontal end 22 of the heat exchange fin 20 is on the long axis 21a of the 21, the horizontal end 22 is 30 ° with the ground and the vertical end 23 is 60 ° with the ground. Comparing the case of installation, the cooling capacity of the elliptical refrigerant pipe 10 is equal to or higher than 101-103%, and the static pressure loss is 60-75%, which is greater than that of the circular refrigerant pipe. It can be seen that the blowing power is reduced by reducing.

10: refrigerant tube
10a: long axis 10b: short axis
20: heat exchanger fin
21: slit
21a: long axis 21b: short axis 21c: slit center
22: horizontal end 23: vertical end

Claims (8)

In a heat exchanger for an air conditioner comprising a plurality of refrigerant pipes 10 and heat exchange fins 20 having a plurality of slits 21 coupled on an outer circumferential surface of the refrigerant pipe 10,
The refrigerant pipe 10 and the slit 21 are elliptical having the long axis (10a, 21a) and the short axis (10b, 21b),
The major axis 21a of the slit 21 has an inclination angle of θ with the horizontal end 22 of the heat exchange fin 20,
The horizontal end portion 22 has an inclination angle of θ to θ + 30 ° with an external air inflow direction,
The refrigerant pipe 10 is characterized in that the long axis (10a) is coupled to the slit 21 so as to form an angle of 0 ° ~ 30 ° with the external air inlet direction
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method of claim 1,
The plurality of slits 21 is characterized in that the three slit centers 21c are arranged to form a triangle
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method according to claim 1 or 2,
The vertical end 23 of the heat exchange fin 20 is characterized in that it is arranged in a V-shape (V)
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method of claim 3,
The vertical end 23 of the heat exchange fin 20 is characterized in that it is arranged in a V-shape (V) having an angle of 60 ° ~ 120 °
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method of claim 4, wherein
The inclination angle θ is characterized in that 30 °
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method of claim 5,
The horizontal end portion 22 has an inclination angle of 30 ° with the external air inflow direction,
The refrigerant pipe 10 is characterized in that the long axis 10a is coupled to the slit 21 to form an angle of 0 ° with the external air inlet direction
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method of claim 5,
The horizontal end portion 22 has an inclination angle of 45 ° with the external air inflow direction,
The refrigerant pipe 10 is coupled to the slit 21 so that the long axis (10a) can form an angle of 15 ° with the external air inlet direction
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.
The method of claim 5,
The horizontal end portion 22 has an inclination angle of 60 ° with the external air inflow direction,
The refrigerant pipe 10 is coupled to the slit 21 so that the long axis (10a) can form an angle of 30 ° with the external air inlet direction
A heat exchanger in which the heat exchange fins have an inclination angle, which reduces the installation area.

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