KR20070031715A - Ventilation unit for air conditioner - Google Patents

Abstract

Disclosed is a ventilation unit for an air conditioner, which can simplify a configuration, reduce a volume, reduce a manufacturing cost, and minimize a flow rate difference between discharged air and intake air. The ventilation unit is installed in the casing, the motor having a rotating shaft installed on both sides of the casing, the intake fan and the exhaust fan respectively installed on both rotation shafts of the motor, and the intake fan inlet for cross-heat exchange between intake air and exhaust air. And a heat exchanger disposed at an intermediate position between the exhaust fan outlet and the exhaust fan outlet, and an intake passage and an exhaust passage arranged to be mutually partitioned in the casing for guiding the intake air and the exhaust air.

Description

Ventilation unit for air conditioner {VENTILATION UNIT FOR AIR CONDITIONER}

1 is a cross-sectional view showing the configuration of an air conditioner to which the present invention is applied.

2 is a perspective view of a ventilation unit for an air conditioner according to the present invention.

3 is an exploded perspective view of a ventilation unit for an air conditioner according to the present invention.

4 is a cross-sectional view taken along line IV-IV 'of FIG. 2.

FIG. 5 is a cross-sectional view taken along the line VV ′ of FIG. 4.

Explanation of symbols on the main parts of the drawings

10: main body, 11: discharge port,

12: intake, 13: heat exchanger,

14: blower, 30: ventilation unit,

31: motor, 33: intake fan,

34: exhaust fan, 35: intake passage,

36: exhaust flow path, 37: heat exchanger,

50: casing, 51: upper casing,

52: lower casing, 55: outdoor inlet,

56: outdoor outlet, 57, 58: connector,

59: indoor inlet, 61: indoor outlet.

The present invention relates to a ventilation unit for an air conditioner, and more particularly, to a ventilation unit for an air conditioner having a blower fan having an intake portion and an exhaust portion.

If the air conditioner is used for a long time in an enclosed indoor space, the indoor air may become cloudy, and the user needs to periodically vent the indoor air. However, it was cumbersome for users to periodically open windows and ventilate them. Therefore, the air conditioner as disclosed in Korean Patent Laid-Open Publication No. 2005-18209 is provided with a function of ventilating indoor air as well as a cooling function so that the user can eliminate the trouble of opening and ventilating a window while using the air conditioner. It was.

The air conditioner disclosed in the above publication has a ventilation unit for ventilation of indoor air, and a ventilation hose connected to the ventilation unit for exhausting indoor air and suction of outdoor air. The ventilation unit includes a motor having a rotating shaft extending to both sides, an intake fan installed on one of the rotating shafts of the motor for intake of outside air, an exhaust fan installed on the other rotating shaft of the motor for the discharge of indoor air, and air discharged to and from the outside. Equipped with a total heat exchanger to allow the incoming air to exchange heat with each other. In addition, the ventilation unit is provided with the heat exchanger on the side of the intake fan, so that the heat exchanger, the intake fan, the motor, and the exhaust fan are arranged in series so that the transverse length is long.

However, such a conventional air conditioner ventilation unit has a problem that it is difficult to apply to a small air conditioner because the transverse length, the intake fan, the motor, the exhaust fan is arranged in series, the length of the transverse direction is long and the volume is large.

In addition, since the ventilation unit is provided on the side of the intake fan, the distance from the intake fan to the heat exchanger and the exhaust fan to the heat exchanger are different, resulting in a difference in the flow rate between the discharged air and the intake air.

In addition, the ventilation unit has a problem that the assembly process is complicated and the manufacturing cost is high because the number of parts is large because the fan casing on the intake fan side, the fan casing on the exhaust fan side, and the ducts forming the flow path are made of separate parts.

The present invention is to solve such problems, it is an object of the present invention to provide a ventilation unit for the air conditioner to simplify the configuration than the conventional to reduce the volume and to reduce the manufacturing cost.

Another object of the present invention is to provide a ventilation unit for an air conditioner so that the flow distance from the intake fan to the heat exchanger and the flow distance from the exhaust fan to the heat exchanger are equal to each other so as to minimize the flow rate difference between the discharged air and the intake air. will be.

Still another object of the present invention is to provide a ventilation unit for an air conditioner, which allows the intake fan and the exhaust fan to be shared.

Ventilation unit for an air conditioner according to the present invention for achieving this object is a casing, a motor provided in the casing and a rotating shaft extending to both sides, an intake fan and an exhaust fan respectively installed on both rotation shafts of the motor, suction A heat exchanger installed in the casing for cross-heat exchange of air and exhaust air, and a heat exchanger disposed at an intermediate position between the intake fan inlet and the exhaust fan outlet, and an intake flow passage provided to be mutually partitioned in the casing for guidance of intake air and exhaust air And an exhaust passage.

The casing may include an upper casing and a lower casing, which may be coupled to and separated from each other, and accommodating parts accommodating the motor, an intake fan, an exhaust fan, and a heat exchanger, and spaces for forming the intake passage and the exhaust passage may be provided in the upper casing. It is provided over and the lower casing, characterized in that the receiving portion and the space is opened when the upper casing and the lower casing is separated from each other.

In addition, the casing is characterized in that it comprises a binding device including a locking groove and the hook is provided to be coupled to each other in the portion where the upper casing and the lower casing is connected.

In addition, the upper casing is characterized in that it comprises an intake guide portion extending upwards a predetermined length upward to guide the intake air passing through the intake fan, the indoor outlet is formed at the top.

In addition, the indoor outlet is characterized in that the net is installed for preventing the introduction of foreign matter.

The present invention is further characterized by an intake filter provided at the inlet side of the intake passage, and an exhaust filter provided at the inlet side of the exhaust passage.

In addition, the intake fan and the exhaust fan is characterized in that the same centrifugal fan.

The casing may include an outdoor inlet provided at the inlet side of the intake passage, an outdoor outlet provided at the outlet side of the exhaust passage, and connecting pipes rotatably installed at the outdoor inlet and the outdoor outlet for connection between the intake hose and the exhaust hose. It is characterized by including.

In addition, the heat exchanger is characterized in that installed close to the side of the motor.

In addition, the ventilation unit for an air conditioner according to the present invention comprises a casing, a motor having rotary shafts extending in both sides of the casing, an intake fan and an exhaust fan respectively provided on both rotary shafts of the motor, and the intersection of intake air and exhaust air. A heat exchanger installed in the casing for heat exchange, and an intake flow passage and an exhaust flow passage arranged to be mutually partitioned in the casing for guiding the intake air and the exhaust air, wherein the casing includes an upper casing and a lower casing that can be combined and separated from each other. And accommodating parts accommodating the motor, the intake fan, the exhaust fan, and the heat exchanger, and spaces for forming the intake flow path and the exhaust flow path are provided over the upper casing and the lower casing, and the upper casing and the lower casing are mutually provided. The receptacles and the spaces are opened when separated.

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

As shown in FIG. 1, the air conditioner to which the present invention is applied includes a main body 10 having a discharge port 11 formed on an upper front surface thereof, and inlets 12 formed on both lower sides thereof, and an inner upper portion of the main body 10. The heat exchanger 13 provided and the blower 14 provided in the lower part of the inside of the main body 10 are provided.

The heat exchanger 11 is installed to be inclined in the upper space inside the body 10 so that air can be exchanged while passing. The blower 12 includes a centrifugal blower fan 15, a motor 16 for driving the blower fan 15, and a fan casing 17 for guiding the blown air toward the heat exchanger 13. The discharge port 11 is provided with a plurality of vertical wings 18 and horizontal wings 19 for guiding the blowing direction of the discharged air.

Such an air conditioner is sucked into the main body 10 through both suction ports 12 by the operation of the blower 14, and the sucked air is exchanged through the heat exchanger 13. The heat-exchanged air is supplied to the indoor space through the discharge port 11 to cool or heat the indoor air.

In addition, the air conditioner not only functions to harmonize the indoor air, but also guides the ventilation unit 30 and the outside air toward the ventilation unit 30 installed in the lower portion of the inside of the main body 10 so as to perform indoor ventilation. An intake hose 21 and an exhaust hose 22 for guiding the air discharged from the ventilation unit 30 to the outside are provided.

2 to 4, the ventilation unit 30 is installed in the casing 50, the casing 50, and has a motor 31 and a motor having rotating shafts 31a and 31b extending to both sides. 31) The intake air flow path 35 and the exhaust flow path 36 provided in the intake fan 33, the exhaust fan 34, and the casing 50, which are respectively provided on both rotation shafts 31a and 31b, and the intake air and exhaust air, respectively. A total heat exchanger (37) is provided at the intersection of the intake passage (35) and the exhaust passage (36) inside the casing (50) for cross heat exchange.

As shown in FIG. 3, the casing 50 includes an upper casing 51 and a lower casing 52 that can be coupled to and separated from each other. The upper casing 51 and the lower casing 52 have accommodating parts for accommodating the motor 31, the intake fan 33, the exhaust fan 34, and the heat exchanger 37, and an intake passage 35. And spaces for forming the exhaust passage 36. That is, the accommodating portions of the motor 31, the intake fan 33, the exhaust fan 34, and the total heat exchanger 37 and the spaces for the intake and exhaust flow paths 35 and 36 are provided in the upper casing 51 and the lower casing 52. Formed over. Therefore, when the upper casing 51 and the lower casing 52 are separated, the accommodating parts and the spaces are opened, so that the motor 31, the intake fan 33, the exhaust fan 34, and the heat exchanger 37 are exposed. The structure of the casing 50 is easy to assemble by mounting the respective parts to the lower casing 52 in the manufacturing process of the ventilation unit 30, and then simply to cover the upper casing 52 to complete the assembly of the parts. I would have to. In addition, the casing 50 is to be easily manufactured by injection molding the upper casing 51 and the lower casing 52 with a resin material, respectively.

In addition, the upper casing 51 and the lower casing 52 is provided with a binding device that can be coupled to or separated from each other. As shown in FIG. 3, the binding device includes a plurality of engaging grooves 53 provided at the lower side of the upper casing 51 and a plurality of engaging grooves provided at the upper side of the lower casing 52 to enter and engage the engaging grooves 53. It includes a hook hook (54). This is to install the parts in the casing (50) to combine the upper casing (51) and the lower casing (52) without being fastened to each other without fastening screws.

As shown in FIG. 4, the motor 31 is installed at an inner central portion of the casing 50, and the intake fan 33 and the exhaust fan 34 extend to both sides of the motor 31. Each bound to 31b). Inside the casing 50, partitions 39a and 39b partitioning the periphery of the intake fan 33 and the exhaust fan 34, and partitions 39c and 39d partitioning the intake passage 35 and the exhaust passage 36, respectively. ) Is provided.

The total heat exchanger (37) is installed on the side of the motor (31), which is an intermediate position between the inlet of the intake fan (33) and the outlet of the exhaust fan (34), and the intake passage (35) and the exhaust passage (36) are connected to the total heat exchanger ( Intersect at 37). This is to allow the outdoor air to be sucked and the indoor air to be discharged to cross each other by passing through the suction side flow path 37a and the exhaust side flow path 37b of the total heat exchanger 37. In addition, the heat exchanger 37 is disposed on the side of the motor 31 to the heat exchanger 37 through the flow distance of the intake air flowing through the heat exchanger 37 toward the intake fan 33 and the exhaust fan 34. The flow distance of the flowing exhaust air is the same so that the flow rate difference between the intake air and the exhaust air can be minimized. In addition, by arranging the total heat exchanger 37 on the side of the motor 31, the length of the ventilation unit 30 in the lateral direction is reduced to make the overall size smaller, so that the ventilation unit 30 can be easily applied to the small air conditioner.

As shown in FIGS. 3 and 4, the intake fan 33 and the exhaust fan 34 are formed of centrifugal fans having the same size and shape. And the inlet direction of the intake fan 33 and the inlet direction of the exhaust fan 34 are provided to face the same direction (left direction in FIG. 4), and the intake flow path 35 and the exhaust flow path 36 are comprised correspondingly. This is to reduce the manufacturing cost by allowing the intake fan 33 and the exhaust fan 34 to be molded in the same mold. That is, the parts can be shared.

As shown in FIG. 4, at the rear of the casing 50, a protrusion 40 for accommodating a part of the total heat exchanger 37 and for guiding flow of intake air and exhaust air is formed, and the protrusion 40 is formed. On both sides, an outdoor inlet 55 through which outdoor air is introduced into the ventilation unit 30 and an outdoor outlet 56 through which indoor air is discharged from the ventilation unit 30 are formed. In addition, the outdoor inlet 55 and the outdoor outlet 56 are provided with connecting pipes 57 and 58 for connecting the intake hose 21 and the exhaust hose 22, respectively. In this case, the connecting tubes 57 and 58 are installed to rotate at a predetermined angle so that a user can easily connect the intake hose 21 and the exhaust hose 22.

In addition, as shown in FIG. 3, the upper casing 51 is provided with an indoor inlet 59 through which indoor air flows into the exhaust fan 34. In addition, the upper casing 51 is provided with an intake guide unit 60 extending upward in a predetermined length so as to guide the air passing through the intake fan 33 upwards and having an indoor outlet 61 formed at an upper end thereof. And the indoor discharge port 61 of the intake guide unit 60 is provided with a net for preventing the inflow of foreign matter. As shown in FIG. 1, the intake guide part 60 guides the air introduced from the outside toward the inlet of the blower 14 inside the air conditioner main body 10 so that smooth ventilation can be achieved.

In addition, an exhaust filter 63 is provided at the indoor inlet 59 to filter foreign matters from the air discharged from the inside, and the outdoor inlet 55 is provided at the inlet to the outside. An intake filter 64 is provided to filter foreign substances in the air. As shown in FIG. 3, the intake filter 64 and the exhaust filter 63 are provided to be pulled out through the openings 65 and 66 formed in the upper casing 51. This is to allow the intake filter 64 and the exhaust filter 63 to be easily separated and cleaned or replaced.

The following describes the operation of the ventilation unit for an air conditioner.

As shown in FIG. 4, when the intake fan 33 and the exhaust fan 34 are rotated by the operation of the motor 31, the indoor air is discharged through the exhaust passage 36, and outdoor through the intake passage 35. Ventilation takes place as the air is inhaled.

That is, indoor air is discharged to the outside through the indoor inlet (59), the exhaust filter (63), the exhaust fan (34), the exhaust side flow path (37b) of the total heat exchanger (37), and the outdoor exhaust port (56) in order. The inlet flows into the interior through the outdoor inlet 55, the intake filter 64, the suction side flow path 37a of the total heat exchanger 37, the intake fan 33, and the indoor outlet 61.

At this time, the outdoor air sucked out and the indoor air discharged are exchanged with each other while passing through the total heat exchanger (37). In addition, the foreign air is filtered while the exhaust air passes through the exhaust filter 63, and the foreign air is filtered while passing through the intake filter 64. In addition, the present invention is the same size and shape of the intake fan 33 and the exhaust fan 34, the distance that the intake air flows from the total heat exchanger 37 to the inlet of the intake fan 33 and the total heat exchanger from the exhaust fan 34 ( The discharge air flows up to 37) are the same, so that the flow resistance of the intake passage 35 and the exhaust passage 36 is almost the same. Therefore, since the flow rate of the intake air and the discharge air is almost the same, a smooth ventilation is achieved.

As described above in detail, the ventilation unit for an air conditioner according to the present invention has an effect of miniaturizing the volume of the ventilation unit because the heat exchanger is disposed at an intermediate position between the intake fan inlet and the exhaust fan outlet.

In addition, since the flow distance from the intake fan to the total heat exchanger is the same as the flow distance from the exhaust fan to the total heat exchanger, the flow rate difference between the discharged air and the intake air can be minimized, thereby increasing the ventilation effect.

In addition, the present invention can reduce the manufacturing cost because the intake fan and the exhaust fan can be shared.

In addition, the present invention is because the casing of the ventilation device is made of an upper casing and a lower casing that can be mutually coupled and separated, it is possible to simplify the configuration, reduce the number of parts, easy to manufacture compared to the conventional ventilation device have. Therefore, manufacturing cost can also be reduced.

In addition, the present invention has an effect that can easily connect the intake hose and exhaust hose because the direction can be changed by rotating the connecting pipes provided in the outdoor inlet and the outdoor outlet.

Claims (12)

A motor having a casing, a rotating shaft installed in the casing and extending on both sides, an intake fan and an exhaust fan respectively provided on both rotating shafts of the motor, and installed in the casing for cross-heat exchange between intake air and exhaust air. And a heat exchanger disposed at an intermediate position between the outlet of the exhaust fan and an intake passage and an exhaust passage arranged to be mutually partitioned in the casing for guiding suction air and exhaust air. The method of claim 1, The casing includes an upper casing and a lower casing that can be coupled to and separated from each other, and accommodating portions accommodating the motor, the intake fan, the exhaust fan, and the heat exchanger, and spaces for forming the intake passage and the exhaust passage, respectively. It is provided over the lower casing, the ventilation unit for the air conditioner, characterized in that the receiving portion and the space is opened when the upper casing and the lower casing are separated from each other. The method of claim 2, And the casing includes a binding device including a locking groove and a hook hook provided to be engaged with each other at a portion where the upper casing and the lower casing are connected to each other. The method of claim 2, The upper casing is a ventilation unit for an air conditioner, characterized in that it comprises an intake guide portion extending upwards a predetermined length to guide the intake air passing through the intake fan, the indoor outlet is formed at the top. The method of claim 4, wherein Ventilation unit for an air conditioner, characterized in that the indoor outlet is installed in the net for preventing the introduction of foreign matter. The method of claim 1, And an intake filter installed at an inlet side of the intake passage, and an exhaust filter installed at an inlet side of the exhaust passage. The method of claim 1, And the intake fan and the exhaust fan are the same centrifugal fan. The method of claim 1, The casing includes an outdoor inlet provided at the inlet side of the intake passage, an outdoor outlet provided at the outlet side of the exhaust passage, and connecting pipes rotatably installed at the outdoor inlet and the outdoor outlet for connection between the intake hose and the exhaust hose. Ventilation unit for an air conditioner, characterized in that. The method of claim 1, The heat exchanger is a ventilation unit for an air conditioner, characterized in that installed close to the side of the motor. A motor having a casing, a rotating shaft installed in the casing and extending on both sides, an intake fan and an exhaust fan respectively provided on both rotating shafts of the motor, a heat exchanger installed in the casing for cross-heat exchange between intake air and exhaust air, An intake passage and an exhaust passage arranged to be mutually partitioned in the casing for guiding air and exhaust air; The casing includes an upper casing and a lower casing that can be coupled to and separated from each other, and accommodating portions accommodating the motor, the intake fan, the exhaust fan, and the heat exchanger, and spaces for forming the intake passage and the exhaust passage, respectively. It is provided over the lower casing, the ventilation unit for the air conditioner, characterized in that the receiving portion and the space is opened when the upper casing and the lower casing are separated from each other. The method of claim 10, And the intake fan and the exhaust fan are the same centrifugal fan. The method of claim 10, The casing includes an outdoor inlet provided at the inlet of the intake passage, an outdoor outlet provided at the outlet of the exhaust passage, and connecting pipes rotatably installed at the outdoor inlet and the outdoor outlet for connection between the intake hose and the exhaust hose. Ventilation unit for an air conditioner, characterized in that.

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