KR200422508Y1 - Unit for mixing air in cool-air and warm-air for an air conditioner - Google Patents

Abstract

The present invention activates airflow circulation during cooling / heating operation by ceiling type air conditioner and maintains the distribution of cooling / heating temperature uniformly in the room to achieve optimized cooling / heating efficiency. The present invention relates to a correction air-mixing unit device, and to an air-conditioning combined air conditioner (11), a heat pump and a blower (13), and a cooling / heating combined-type ceiling air conditioner in which a main duct for directing cold and hot air flows is installed. In this case, the main duct (T1) is connected to the inlet pipe 101, the cold and hot air flows in, and the discharge duct is coupled to the extension duct (T2) for guiding the cold and hot air flow introduced into the diffuser 20 (102) and an induction pipe (103) having an induction duct (T3) for inducing indoor air in a direction substantially perpendicular to the axial direction of the inlet pipe (101) and the outlet pipe (102) is provided, and the inlet pipe ( 101), discharge pipe 102 and induction pipe (10) 3 is an air mixing unit 100 having a baffle 110 attached to the inner diameter of the inlet pipe 101 so that the inner diameter of the inlet pipe 101 gradually decreases around the intersection point P where the axes of 3) intersect.

Air Conditioning, Air Conditioning, Air Conditioning, Air Conditioning System

Description

Unit for air mixing unit for cold / hot air temperature correction for comfortable heating and cooling {UNIT FOR MIXING AIR IN COOL-AIR AND WARM-AIR FOR AN AIR CONDITIONER}

Figure 1 is a cross-sectional view illustrating an installation example of the air conditioning air conditioning system according to the conventional ceiling type air conditioner,

Figure 2 is a cross-sectional view illustrating an air mixing unit device for hot and cold air temperature correction according to the present invention,

Figure 3 is a cross-sectional view illustrating other embodiments of the air mixing unit for hot and cold air temperature correction according to the present invention,

Figure 4 is a cross-sectional view showing an example of combining the air-mixing unit for cooling and hot air temperature correction of the present invention to the air-conditioning air conditioning system according to the ceiling type air conditioner,

Figure 5 is a cross-sectional view of the air conditioning system installed by combining the air mixing unit device for hot and cold air temperature correction of the present invention to a conventional ceiling-type air conditioner system.

<Explanation of symbols for the main parts of the drawings>

10: ceiling type air conditioner 11: straight coil

13: blower 20: diffuser

100: air mixing unit 101: inlet pipe

102: discharge pipe 103: induction pipe

T1: Main duct T2: Extension duct

T3: Induction duct P: Intersection

110: baffle

110a: plate-shaped baffle 110b: baffle with through holes formed

110c: bottleneck baffle

The present invention mixes the air in the room with the cold and hot air transported along the main duct to maintain uniform cooling and heating temperature distribution when the ceiling air conditioner is operated. Optimized cooling and heating efficiency by preventing local supercooling or overheating, and accelerates cooling and hot air flow in the duct by instantaneously accelerating cold and hot air flow during transfer of cold and warm air The present invention relates to an air-mixing unit device for cooling and heating air temperature correction for comfortable cooling and heating that can realize efficient cooling and heating efficiency.

In general, large buildings such as officetels and hospitals are equipped with central air conditioning and heating systems to increase energy efficiency and space utilization, and relatively medium or small buildings are installed with both air conditioning and ceiling type air conditioners.

Referring to Figure 1, Figure 1 is an example of the installation of the conventional air-conditioning combined ceiling-type air conditioner, the ceiling-type air conditioner 10 is a linear coil 11 or the inside to be installed on the stand-type black ceiling The heat pump and the blower 13 are built in, and the volume is compact and compact.

However, since the ceiling air conditioner 10 is small and compact as described above, the amount of air flowing in and out of the room for cooling or heating can be reduced, so that the air supply temperature during cooling is lower than that of the central air conditioning system. The temperature is lowered by about 4 ~ 5 ℃, and it is supplied higher than 10 ℃ when heating.

Therefore, during cooling, a phenomenon in which the space around the diffuser 20 is overcooled occurs, and during heating, the surroundings of the diffuser 20 maintain excessively high temperature, but the warm air flows near the ceiling 1 due to buoyancy. Because of the rise, the vertical height, which is a storage area, is maintained at a temperature of 1.6m or less, which causes a problem of lowering cooling and heating efficiency. This problem occurs particularly in the ceiling-type air conditioner 10 installed in many small and medium buildings.

In the case of the conventional ceiling type air conditioner 10, the hot air temperature supplied through the diffuser during heating is usually 39 ° C., and the cold air temperature supplied during cooling is generally supplied at 12 ° C. In order to check the temperature distribution of the room according to the cooling and heating of the conventional ceiling-type air conditioner 10, a simulation was performed to obtain a temperature and air flow distribution as shown in [Figure 1] and [Figure 2] below.

Temperature distribution at cooling Airflow distribution chart for cooling

[Figure 1] Room temperature distribution and airflow distribution diagram during cooling operation by ceiling type air conditioner

As shown in the above [1], the room temperature distribution chart during cooling is the cold air discharged from the indoor unit is vertically lowered and the lower part is rapidly lowered to about 19 ° C, and the other part is maintained at 26 to 30 ° C, so that the temperature distribution of the cold air is maintained as a whole. It can be seen that it is not uniformly distributed but is distributed unevenly.

Temperature distribution map during heating Temperature distribution map during heating

[Figure 2] Indoor temperature distribution and airflow distribution diagram for heating operation by ceiling type air conditioner

On the contrary, during the heating operation of the ceiling type air conditioner 10, as shown in [Fig. 2], the hot air air supplied through the diffuser 20 does not reach the floor of the room and rises to the ceiling 1 again. It can be seen that it represents. This is because the discharge temperature of the warm air of the ceiling-type air conditioner 10 is significantly high, such as 39 ℃, the upper and lower temperatures of the indoor space is uneven due to the buoyancy generated at this time.

As described above, in the cooling operation of the conventional ceiling type air conditioner 10, a phenomenon in which the indoor space is locally supercooled occurs. That is, while the indoor room near the diffuser 20 has a low sensation temperature, it is easy to catch a cooling bottle or a cold, while the indoor room far away from the diffuser 20 has a high sensation temperature, which is an inconvenient inconvenience of driving an air conditioner operation stronger. Is there. Of course, the above discomfort is almost the same phenomenon even during heating operation.

The present invention was devised to solve the problems of the conventional air-conditioning combined ceiling type air conditioner as described above, and the main object of the present invention is to provide a cold air before the heat exchanged by the ceiling-type air conditioner. By mixing indoor air with hot air to compensate for cold and warm air temperatures, and simultaneously accelerating cold and hot air flows to blow the air blowing distance farther, enabling uniform temperature distribution and circulating air flow to activate cooling and heating. It is an object of the present invention to provide an air mixing unit device for correcting cold and hot air temperatures that can maintain a uniform temperature.

As an implementation means for implementing a temperature correction air mixing unit device for comfortable cooling and heating according to the object of the present invention

In the ceiling-type air conditioner for cooling / heating combined with a main coil, a heat pump and a blower, and a main duct for inducing heat-exchanged cold / hot air flow into the room,

An inlet pipe coupled to the main duct to which cold and hot air flows, and an extension pipe to which the introduced cold and hot air flows are discharged toward the diffuser, and a direction substantially perpendicular to the axial direction of the inlet pipe and the discharge pipe. Induction pipe is provided is coupled to the induction duct for inducing indoor air, and the baffle to the inner diameter of the inlet pipe is gradually reduced so that the inner diameter of the inlet pipe is gradually reduced around the intersection point of the axis of the inlet pipe, discharge pipe and the induction pipe to intersect. It can be achieved with an attached air mixing unit.

The baffle of the present invention prevents the cold and hot air introduced from the main duct from moving toward the induction pipe, and generates jet flow in which air is accelerated when the cold and hot air passes through the passage narrowed by the baffle. The instantaneous wind pressure is rapidly increased by the jet flow, and the suction force to suck the indoor air into the induction pipe is generated, and the indoor air joins the cold and hot air to compensate for the cold and hot air temperature. Cool air or warm air mixed with indoor air is supplied to the room through a diffuser. At this time, the air being supplied is accelerated by the jet flow to supply air, so that the cold and hot air flow can be blown farther.

Therefore, the present invention can increase the instantaneous wind pressure generated by the jet flow, and the wind speed is increased, so that it can be blown farther than the blowing distance of the conventional cold and hot air flow discharged from the diffuser can not only activate the air flow circulation but also blower By correcting the temperature of the cold or hot air transported by the temperature lower than the initial temperature to solve the problem of overcooling or overheating only the upper or lower diffuser area of the room can maintain the room temperature uniformly during cooling and heating. In addition, in the air conditioner supplying low temperature or high temperature airflow, there is an advantage that the air conditioner can be manufactured more compactly when the air mixing unit device is installed.

Hereinafter, with reference to the accompanying drawings for the air-mixing unit for cold / hot air temperature correction for comfortable cooling / heating according to the present invention will be described in detail as follows.

2 and 3, Figure 2 is a cross-sectional view illustrating a representative embodiment of the air-mixing unit for the hot and cold air temperature correction for comfortable cooling and heating according to the present invention.

In the figure, reference numeral A is an air (cold or hot air) entry direction supplied from the air conditioner side, B is an air discharge direction through which air passed through the baffle 110 by cold or warm air is discharged, and C is the air baffle. It is a direction of indoor air induction, where indoor air is sucked by the jet flow generated when passing through and joined with the cold / hot air stream.

Reference numeral 101 is a connection pipe to which the main duct T1 for inducing cold air or warm air transferred by the blower of the ceiling air conditioner is connected, and 102 is a diffuser 20 for cooling and hot air flows introduced from the main duct T1. Induction duct (T2) for guiding to) is coupled to the extension tube 103 is an induction duct (T3) is connected to the interior and the interior space of the air mixing unit 100 is connected to each other.

The baffles 110 are attached to the inner diameter of the inlet pipe to form a jet flow (also referred to as jet flow) in the air mixing unit 100, the shape of the baffle for preventing back draft As shown in Figure 3 (a) ~ (c) it can also be configured to produce a variety of forms, such as the length of the baffle and the perforated plate-shaped baffle, flat plate baffle according to the amount of indoor air to be attracted.

For example, the shape of the baffle 110 can be provided with a plate type baffle 110a around the intersection point P of the air mixing unit 100, as shown in FIG. In addition, the baffle 110c may be installed in a funnel shape having a shape such as a bottleneck of a beverage bottle around the intersection point P of the air mixing unit 100 as shown in FIG. 3 (c), and also in FIG. 3 (b). As shown in the drawing, the through-hole 111 may be formed on the surface of the flat baffle 110b.

The baffle 110 is to gradually narrow the inner diameter of the inlet pipe 101 to form a jet stream by rapidly accelerating the inner and warm air flow passing through the narrow passage, and the cold and hot air flow guides by the jet flow It provides an action to block the flow into the tube 103. Therefore, the end of the baffle 110 is preferably installed to extend further toward the air discharge direction (B) around the intersection point (P).

4 and 5, Figure 4 is a cross-sectional view showing an example of combining the air mixing unit device according to the present invention to the ceiling type air conditioner, Figure 5 is shown in the conventional ceiling air conditioner system of the present invention A cross-sectional view illustrating a cooling / heating air conditioning system completed by combining an air mixing unit device for correcting hot air temperature is shown.

Referring to FIG. 4, the target air volume blown from the ceiling air conditioner 10 to the diffuser 20 by the blower is 5 m / sec in airflow in the main duct T1, and 3.6 m / sec in manned wind speed. Assuming that the ratio of the cross-sectional area of the manned pipe 103 and the main duct T1 is 0.81, the air supply temperature of the cold / hot air supplied to the diffuser 20 after passing through the air mixing unit 100 during cooling and heating is as follows. The air can be corrected together.

Correction of the air supply temperature by air mixing is theoretically possible by the following calculation.

The cross-sectional area (㎡) of the main duct T1 is (1 × 1 × 3.14) / 4 = 0.785 ㎡,

Manned duct (T3) cross-sectional area (㎡) is (0.81 × 0.81 × 3.14) / 4 = 0.515 ㎡,

Diffuser 20 Discharge Air Flow (m 3 / sec) = 0.785 m 2 × 5 m 3 / sec = 3.925 m 3 / sec,

Manned duct air volume (㎥ / sec) = 0.515 ㎡ × 3.6 ㎥ / sec = 1.854 ㎥ / sec,

The main duct (T1) air volume is diffuser discharge air volume 3.925 m 3 / sec-induced duct air volume 1.854 m 3 / sec = 2.895 m 3 / sec.

The air supply temperature of the cold wind corrected by the indoor air mixed by the air mixing unit 100 at the time of cooling is = (12 × 2.071 m 3 / sec + 20 × 1.854 m 3 / sec) / 3.925 = 18.61 ° C.

The air supply temperature of the warm air corrected by the indoor air mixed by the air mixing unit 100 during heating is = (39 × 2.071 m 3 / sec + 20 × 1.854 m 3 / sec) / 3.925 = 30.03 ° C.

As described above, the air mixture unit 100 is installed in the main duct T1 and mixed with the indoor air to supply 32.08% of indoor air, which theoretically increases by about 6.61 ° C when cooled. When heated, it is supplied at a low temperature of about 9 ° C to maintain a uniform air flow distribution in the room, thereby providing a comfortable thermal comfort.

As described above, the air-mixing unit for cold and hot air temperature correction for comfortable cooling and heating according to the present invention can not only distribute the cooling and heating temperatures of the room more uniformly during cooling and heating, but also improve the air circulation. It can promote the cooling and heating efficiency.

Preferred embodiments of the air-mixing unit device for correction of cold and hot air temperature of the present invention described above are intended to help understanding the present invention, and those skilled in the art can make various changes and modifications with reference to the present specification. It will be appreciated that examples may be practiced. In other words, the installation angle and the number of baffles when the installation of the baffle can be changed very easily through this specification, but these modifications are the true meaning of the technical idea and the utility model registration claims below intended by the inventors. Please note that it is included in the category.

Claims (4)

In the ceiling-type air conditioner for both cooling and heating with a built-in coil, a heat pump and a blower, and a main duct for directing cold and hot air flow into the room, The inlet pipe 102 is connected to the main duct (T1) is connected to the inlet pipe 101, the cold and hot air flows, and the extension duct T2 for guiding the introduced cold and hot air flow toward the diffuser 20 is coupled to the discharge pipe 102 ) And an induction pipe 103 to which the induction duct T3 for inducing indoor air in a direction substantially perpendicular to the axial direction of the inflow pipe 101 and the discharge pipe 102 is provided, and the inflow pipe 101 is provided. The baffle 110 is attached to the inner diameter of the inlet pipe 101 so that the inner diameter of the inlet pipe 101 gradually decreases around the intersection point P where the axes of the discharge pipe 102 and the induction pipe 103 intersect. Air-mixing unit device for cold and hot air temperature correction for comfortable air conditioning characterized in that the air mixing unit (100). According to claim 1, wherein the baffle (110) is a funnel-shaped baffle having a bottleneck shape, air mixing unit device for cold and hot air temperature correction for comfort air conditioning. The air mixing unit apparatus for cold and hot air temperature correction for comfortable cooling and heating according to claim 1, wherein a plurality of through holes (111) are formed on the surface of the baffle (110). According to claim 1, wherein the end of the baffle 110 is further extended toward the discharge direction of the cold and hot air stream around the intersection point (P) where the axis of the inlet pipe 101 and the axis of the induction pipe intersect. Air mixing unit device for cold and hot air temperature correction for comfortable air conditioning.

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