KR20040101921A - Air conditioner - Google Patents

Abstract

PURPOSE: An air conditioner with a small sub-fan unit having good ventilation efficiency and low operation noise while having an air supply function and an exhaust function is provided to send cold air far away in a room and suppress an increase of hot wind diffused in heating operation. CONSTITUTION: An indoor heat exchanger and a main fan for controlling air are arranged inside an indoor unit which is long in a horizontal direction. A sub-fan unit(15) is installed to supply outdoor air into a room, and to exhaust indoor air to the outside. The sub-fan unit has a sub-fan(19) supplying and exhausting air in the same rotary direction. Dampers(29) switch a ventilation path of the sub-fan and a communication state to an indoor sub-ventilation port of the ventilation path and an outdoor sub-ventilation port to form wind paths(22,24) for air supply and exhaust.

Description

Air Conditioner {AIR CONDITIONER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and is particularly suitable for an air conditioner in which a sub fan is installed in an indoor unit to have an air supply function and an exhaust function.

As a conventional air conditioner of this kind, there exists a thing of Unexamined-Japanese-Patent No. 2000-274727 (patent document 1). This patent document 1 has an exhaust function for exhausting indoor air to the outside by assembling a sub fan that can be switched between forward and reverse rotation in a single ventilation path and switching the direction of rotation of the sub fan, and to blow the outdoor air into the room. An indoor unit of a separate air conditioner having a sub fan unit having an air supply function is disclosed.

[Patent Document 1]

Japanese Patent Publication No. 2000-274727

In general, by limiting the rotational direction of the fan to one direction, the blower has an ideal shape for the shape of the mouth ring sucked by the fan and the shape of the casing for inducing the air blown out by the fan with respect to the rotational direction. A low noise blower can be used.

However, as described in Patent Literature 1, when the blowing direction is switched by changing the rotation direction of the sub-fan from forward rotation to reverse rotation, when the air intake port at the forward rotation is reverse rotation, the air intake port becomes the reverse rotation day. When the air intake port at the time of forward rotation is an air outlet. For this reason, the air intake or air outlet of the sub-fan could not be made an effective shape suitable for each function. Moreover, even if it was a sub fan, it had to send wind similarly also in the forward rotation and the reverse rotation, and it was not able to make it the shape of the blade which has a high blowing efficiency. Therefore, in order to ensure the air volume required for ventilation, it is necessary to enlarge the shape of a sub fan, and the size of the sub fan unit assembled to an indoor unit becomes large. In addition, since the shape of the blade of the sub fan and the shape of the ventilation path cannot be made to have a good efficiency, the blowing efficiency deteriorates and the noise of the sub fan unit cannot be reduced.

In addition, in the air conditioner of patent document 1, only the air blown out from the sub fan unit is blown out from the edge part of an indoor unit, and it does not make it effective to use the air taken out in association with the air blown out from a main fan.

In addition, in the air conditioner of patent document 1, the self-cleaning of the air filter or air cleaner arrange | positioned at the sub fan unit was not considered.

An object of the present invention is to obtain an air conditioner having a sub fan unit which is small in size and has good ventilation efficiency and low operation noise even if it has an air supply function and an exhaust function.

Another object of the present invention is to obtain an air conditioner capable of reaching the distant part of the room by reaching the cold air taken out in the cooling operation by the outside air taken out from the sub fan unit, and suppressing the rise of the warm air taken out in the heating operation. .

Another object of the present invention is to obtain an air conditioner capable of self-cleaning dust removed at the suction side of the air purifier at the time of supply of the sub fan unit at the time of exhaust.

Another object of the present invention is to provide an air conditioner that blows air having a reduced degree of pollution into a room even when outdoor air is contaminated, and at the same time reduces the ventilation resistance at the time of exhaust.

1 is an external view of an indoor unit according to an embodiment of an air conditioner according to the present invention.

2 is a component layout view of the indoor unit of FIG. 1;

3 is a sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along line B-B in FIG.

5 is an external view of the sub fan unit of FIG. 1;

FIG. 6 is a perspective view in which the right side plate of the sub fan unit of FIG. 5 is omitted. FIG.

FIG. 7 is a perspective view in which a left side plate of the sub fan unit of FIG. 5 is omitted. FIG.

8 is a view schematically showing the flow of air in the sub fan unit of FIG.

Fig. 9 is a diagram showing a state of operation of the sub fan unit of Fig. 2;

FIG. 10 is an explanatory diagram of wind flow in a circulating operation of the sub fan unit of FIG. 2; FIG.

FIG. 11 is an explanatory diagram of wind flow in the exhaust operation of the sub fan unit of FIG. 2; FIG.

12 is an explanatory diagram of wind flow in air supply operation of the sub fan unit of FIG. 2;

FIG. 13 is an explanatory diagram when the cooling operation of the indoor unit of FIG. 1 is used in combination with the circulation operation or the air supply operation of the sub fan unit; FIG.

FIG. 14 is an explanatory diagram when the heating operation of the indoor unit of FIG. 1 and the circulation operation or the air supply operation of the sub fan unit are used together; FIG.

FIG. 15 is a cross-sectional view illustrating the presence or absence of a rectifying plate of a sub take-out part of the indoor unit of FIG. 1; FIG.

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

1: indoor unit

2: unit box member

3: makeup cover

4: front cover

5: air intake

6: air outlet

7: up and down wind deflector

8: indoor air filter

9: main fan

10: heat exchanger

11: dewdrop

12: blowing duct

13: sub drawing part

14: electrical components

15: sub fan unit

16: sub inlet

17: sub outlet

18: supply and discharge mechanism

19: sub fan

20: sub motor

21: Air Purifier

22: suction stove

23: discharge furnace

24: air supply path

25: common cooker

26: air chamber

27: mouse ring

28: casing

29: damper I

30: Motor I

31: damper Ⅱ

32: motor II

33: insect net

34: sub fan outlet

In order to achieve the first object, the present invention is to arrange the indoor heat exchanger and the main fan in the horizontally long indoor unit for air conditioning the indoor air, and to provide the air to the room and exhaust of the indoor air to the outside In an air conditioner provided with a sub fan unit, the sub fan unit includes a sub fan having the air supply and exhaust in the same rotational direction, a ventilation path of the sub fan, an indoor sub vent of the ventilation path, and an outdoor sub It is provided with the damper which switches the communication state to a ventilation opening, and forms the air path of air supply and exhaust.

In order to achieve the said 1st object more preferably, this invention adds the following structure to the said structure.

The damper is provided so as to provide two indoor sub-vents, and to switch the air intake from one indoor sub-vent, and to form a circulating air path taken out from the other indoor sub-vent.

Further, the sub fan is composed of a centrifugal fan having a casing which sucks air from the axial direction in the longitudinal direction of the indoor unit and discharges it in the circumferential direction, and a suction air path of the sub fan is formed on the suction surface side of the casing. And an exhaust air path of the sub fan is formed outside the outer circumferential surface of the casing, and a motor of the sub fan is built in the center of the sub fan, and the sub fan unit is thinned horizontally to be stored at the side end in the indoor unit. will be.

In addition, the ventilation path of the sub fan is formed having an intake air passage, a blowout air passage, and a common air passage, and the common air passage communicates with the outdoor sub air vent, and the suction air passage and the blowout air passage switched by the damper are shared. It is communicating with the wind.

In order to achieve the second object, the present invention also provides a main blowout outlet of the indoor air harmonized in the indoor heat exchanger horizontally formed in the lower portion of the indoor unit, and communicates with the blowing air passage of the sub fan via a blower duct. The sub drawing part which is used is provided just above the center part of the said main outlet.

In order to achieve the above second object more preferably, the present invention also provides the indoor sub-vents communicating with the air outlets of the sub-fans in the air supply and the suction air passages of the sub-fans in the exhaust air. It is divided into communicating sub-suction ports.

In order to achieve the third object, the present invention is also provided with a filter or an air cleaner in the sub fan unit, and the ventilation path of the sub fan is formed with a suction air passage, a blow air passage and a common air passage, and the common air passage The suction side of the filter or the air purifier communicates with the outdoor air sub vent and communicates the suction air passage and the blowdown air passage switched by the damper with the common air passage and becomes a suction air passage at the time of air supply. It is installed to face the common air path.

In order to achieve the above another object more preferably, the present invention also constitutes the sub fan as a centrifugal fan having a casing which sucks air from the axial direction in the longitudinal direction of the indoor unit and discharges it in the circumferential direction. A suction air path of the fan is formed on the suction surface side of the casing, an exhaust air path of the sub fan is formed outside the outer circumferential surface of the casing, a motor of the sub fan is built in the center of the sub fan, and the filter or the air The purifier is disposed outside the outer circumferential surface of the casing, and the sub-fan unit is thinned horizontally and stored in the side end portion of the indoor unit.

In order to achieve the above another object, the present invention is to arrange the indoor heat exchanger and the indoor fan in the horizontally long indoor unit for controlling the air in the room, the air supply operation to introduce the outdoor air into the indoor and discharge the indoor air to the outside In the air conditioner provided with the sub fan unit which performs exhaust operation, the air cleaner filter is provided in the said sub fan unit, and the air introduce | transduced at the said air supply operation passes through this air purification filter, The air path in the sub fan unit is configured not to pass through the air cleaning filter.

EMBODIMENT OF THE INVENTION Hereinafter, one Example of the air conditioner of this invention is described using drawing.

The overall configuration and function of the air conditioner will be described with reference to Figs. 1 is an external view of an indoor unit according to an embodiment of the air conditioner according to the present invention, FIG. 2 is a component layout view of the indoor unit of FIG. 1, FIG. 3 is an AA sectional view of FIG. 2, FIG. BB cross section.

The air conditioner of the present embodiment is a separate type air conditioner configured by connecting the indoor unit 1 and the outdoor unit through a refrigerant pipe, a drain hose, an electric wiring, a ventilation pipe, and the like. The indoor unit 1 is horizontally long in overall shape and is installed on the upper part of the indoor wall surface or the like.

The indoor unit 1 is comprised with the unit box member 2, the makeup cover 3, and the front cover 4, and is comprised. The indoor unit 1 is provided with an air intake port 5 for sucking indoor air in which temperature and humidity are harmonized, and an outlet 6 for taking out indoor air in which temperature and humidity is harmonized. The air blower outlet 6 is long and large horizontally installed in the lower part of the indoor unit 1, and comprises the main blower outlet with respect to the sub blower outlet 13. As shown in FIG. The upper and lower wind deflection plates 7 are rotatably provided at the air outlet 6. The up-and-down wind direction plate 7 is for changing the direction of the blown air, and is positioned to blow out in the horizontal direction at the time of cooling, and is positioned to blow out downward at the time of heating.

As shown in Figs. 2 and 3, the unit box member 2 includes a main fan 9, a heat exchanger 10, and a dew receiver 11 assembled therein. The main fan 9 is composed of a transversely long perfusion fan and is arranged at the center in the indoor unit 1 to suck the indoor air from the air intake port 5 and to blow it out of the air outlet 6. The heat exchanger 10 is arranged on the suction side of the main fan 9 and is formed in an approximately inverted V shape. The dew receiver 11 is disposed below the lower ends of the front and rear sides of the heat exchanger 10 and is installed to receive the condensed water generated in the heat exchanger 10 during the cooling operation or the dehumidification operation to be discharged to the outside. As a result, a main passage through which indoor air to be controlled by air flows is formed. That is, by operating the main fan 9, indoor air is sucked through the air intake port 5, cooled, dehumidified, or heated in the heat exchanger 10 and taken out from the air outlet 6 to the room.

The sub fan unit 15 is disposed at one side in the indoor unit 1. Specifically, the sub fan unit 15 is opposite to the main fan motor 9a for driving the main fan 9 of the unit box member 2, in other words, the main fan 9 and the heat exchanger 10. 2 and 4 are assembled in the left side of the. The sub fan unit 15 is formed thin in the horizontal direction. The sub fan unit 15 can be arranged on the opposite side to the main fan motor 9a so that the design of the indoor unit 1 can be symmetrical, and the design can be improved.

The sub fan unit 15 has a sub suction port 16 for sucking indoor air in the front portion. This sub suction port 16 is located at the rear of the indoor air filter 8 so as to suck the indoor air through the indoor air filter 8. The sub suction port 16 constitutes an indoor sub vent hole. In the present embodiment, the indoor sub vent is divided into two, the sub suction port 16 and the sub blowout port 17 to be described later.

The blower duct 12 communicates with the sub blower outlet 17 of the sub fan unit 15. The blowing duct 12 is located in front of the dew receiver 11 above the air outlet 6 and extends laterally to the center portion in the indoor unit 1. The sub blowout port 13 is provided just above the front end of the blower duct 12, in other words, the central portion of the air blowout outlet 6. As a result, the air blown out from the sub fan unit 15 into the room is blown into the blower duct 12 from the sub blower outlet 17, and blown out into the room from the sub blower unit 13 of the distal end of the blower duct 12. Will be.

The sub fan unit 15 has an air supply / exhaust mechanism 18 on the rear part which exhausts indoor air to the outside and blows in fresh outdoor air. The supply / exhaust mechanism 18 constitutes an outdoor side ventilation opening. In general, a supply / exhaust duct having flexibility is connected to the supply / exhaust mechanism 18, and the supply / exhaust duct is arranged outdoors together with a refrigerant pipe connecting the indoor unit and the outdoor unit, and the tip of the supply / exhaust duct is opened to the outside air. do.

As shown in FIG. 2, the electric component 14 is provided at the right end of the indoor unit 1, in other words, on the right side of the heat exchanger 10. By turning on the power switch of the indoor unit 1, the control device of the electric component 14 is operated, and the main fan 9 is driven. By driving the main fan 9, the indoor unit 1 sucks the indoor air from the air inlet 5 through the indoor air filter 8, harmonizes the temperature and humidity of the indoor air sucked in the heat exchanger 10, , And flows through the main fan 9 to the air blower outlet 6, and blows out indoor air in which the temperature and humidity are harmonized from the air blower outlet 6 to the room to harmonize the environmental conditions of the room to a state suitable for living.

The dew receiver 11 is installed at the lower part of the heat exchanger 10. In the cooling operation, the heat exchanger 10 cools the indoor air so that the moisture contained in the indoor air is condensed to form cold drain water. Gathered in the receiver 11 and drained to the outside through a drain hose. In the heating operation, since the heat exchanger 10 acts as a heater, the dew receiver 11 provided below the heat exchanger 10 is heated to become hot. Accordingly, the dew receiver 11 is cooled by collecting cold drain water in the case of the cooling operation and cooled, and heated and heated by the high temperature heat exchanger 10 in the case of the heating operation. And since the blowing duct 12 which guides the air blown out by the sub fan unit 15 from the sub blower outlet 17 is provided in the front surface of the dew receiver 11, the temperature conditions of the dew receiver 11 are directly controlled. In the case of a cooling operation, it is cooled and cooled, and in a heating operation, it is heated and warms. Therefore, the air blown from the sub fan unit 15 and flowing in the blowing duct 12 is cooled and cooled in the case of the cooling operation, and heated and warmed in the case of the heating operation while flowing in the blowing duct 12. . When the sub fan unit 15 performs an air supply operation for supplying outdoor fresh air to the room, in the cooling operation, for example, hot outdoor air is supplied during summer, but is spared while passing through the blower duct 12. The cooling effect does not impair the cooling effect of the room, and in the heating operation, for example, the cold outdoor air is supplied in winter, but the heating effect is preheated while passing through the blower duct 12, thereby heating the room. There is no damage to it.

In addition, although the main fan motor 9a and the electric component 14 were arrange | positioned at the right side of the indoor unit 1, and the sub fan unit 15 was arranged at the left side in this embodiment, the effect similar to this embodiment is arrange | positioned even if it is reversed. It is possible to get

Next, the configuration and function of the sub fan unit 15 will be described with reference to Figs. 5 is an external view of the sub fan unit of FIG. 1, FIG. 6 is a perspective view of the right side of the sub fan unit of FIG. 5, and FIG. 7 is a perspective view of the left side of the sub fan unit of FIG. 5.

The sub fan unit 15 arranges the blower part in the lower half part, arranges the air cleaner 21 in the upper half part, arranges the upper and lower vertical lines, and narrows the width dimension, and the width of the indoor unit 1 is reduced. The sub fan unit 15 can be accommodated in the indoor unit 1 without making the dimension wide.

The blower part of the lower half part of the sub fan unit 15 is provided with the sub fan 19 and the sub motor 20 which drives this sub fan 19. As shown in FIG. The sub fan 19 is comprised by the centrifugal fan which has the casing 28 which inhales air from the axial direction which is the longitudinal direction of the indoor unit 1, and discharges it to the circumferential direction. The suction air passage 22 of the sub fan 19 is formed on the suction surface side of the casings 22b and 28. The sub motor 20 is assembled to the recessed part of the sub fan 19 so that the width dimension of the sub fan unit 15 may become small. The exhaust air passage 23 of the sub fan 19 is formed outside the outer circumferential surface of the casing 28. The common air passage 25 communicating with the supply / exhaust mechanism 18 is formed outside the outer circumferential surface of the casing 28.

An air purifier 21 is disposed above the intake air passage 22, the exhaust air passage 23, and the common air passage 25. The air supply air passage 24 is provided between the intake air passage 22 and the air cleaner 21. The lower part of the intake air path 22 is provided with the air chamber 26 which guides the flow of the air which the sub fan 19 blows out to the sub air outlet 17.

In addition, the damper I 29 is provided at the suction part of the sub-fan 19, and the damper I 29 is driven by the motor I 30 to drive the suction inlet 22a and the air supply air passage (22a) provided in the suction air passage 22. One of the air supply holes 24a provided in 24 is opened to shield the other. The damper II 31 is also provided in the sub fan suction part 26a through which the sub fan 19 collects and blows out the air taken out by the casing 28, and the damper II 31 is connected to the motor II 32. By driving, either one of the air chamber blow holes 26a provided in the air chamber 26 and the exhaust air blow holes 23a provided in the exhaust air passage 23 are opened to shield the other.

On the opposite side of the air chamber 26 in which the air chamber blower 26a is provided, a sub blower outlet 17 for blowing wind is provided in the air blowing duct 12 (see FIG. 2). In addition, in the exhaust air passage 23, an insect repellent net 33 is provided to prevent insects and the like from invading from the outside. Then, the partition 23d is provided in the exhaust air passage 23 so that the indoor air exhausted through the exhaust air passage 23 flows toward the surface of the air cleaner 21 and is integrated on the surface of the air cleaner 21. The dust is removed, and the dust is discharged from the supply / exhaust mechanism 18 together with the indoor air exhausted through the common air passage 25. As a result, the dust removed from the outdoor air sucked during the air supply operation and accumulated on the suction side of the air cleaner 21 is removed from the exhausted indoor air, so that the sub fan unit 15 is provided with respect to the air cleaner 21. It will have a self-cleaning function. In addition, since the indoor air to be exhausted does not penetrate the air purifier 21 during the exhaust operation, the ventilation resistance during the exhaust operation can be reduced, and the amount of the indoor air to exhaust can be increased.

Since the air cleaner 21 needs to be replaced or cleaned as necessary, the front cover 4 is opened without removing the entire sub fan unit 15 from the indoor unit 1 and the handle ( The air cleaner 21 can be removed from the sub fan unit 15 only by taking out 21a). In addition, the insect repellent net 33 can be removed similarly.

In addition, in the present embodiment, the air purifier 21 is adopted not only to remove dust in the air but also harmful components to the outdoor air sucked during the air supply operation. You may remove it.

Next, the circulation operation, the ventilation operation, and the air supply operation by the sub fan unit 15 will be described with reference to Figs. 8 and 9 mainly. FIG. 8 is a diagram schematically illustrating the flow of air in the sub fan unit of FIG. 2, and FIG. 9 is a diagram illustrating an operating state of the sub fan unit of FIG. 2.

The sub fan unit 15 has three types of operation modes and a state of operation stop, circulating operation, ventilation operation and air supply operation. And the wind flow direction and damper opening / closing position in each operation mode are as shown in FIG. In addition, although the wind is not flowing in the state of stopping operation, the damper I 29 and the damper II 31 are in position (b), respectively, and the outdoor air is exhausted from the exhaust air passage 23 and the air supply air passage 24. To prevent entry into the room. In addition, although not demonstrated in particular, switching of each operation mode is performed by the operation part of a remote control switch, or it is performed by the operation part of the indoor unit 1. If the subfan unit 15 can be operated in combination with the cooling operation of the indoor unit 1, the subfan unit 15 may be operated alone. In addition, it is also possible to provide a timer to the sub fan unit 15 to automatically stop the operation after a predetermined time operation.

As shown in FIG. 8, since the sub fan 19 used for the sub fan unit 15 rotates in a predetermined direction and flows air in the direction of the arrow, the mouth ring (in the suction part of the sub fan 19) ( 27 can be made into the shape adapted to the sub fan 19, and the casing 28 can also be made into the shape adapted to the sub fan 19, and the blowing efficiency of the sub fan 19 can be improved and a sub fan is also provided. The operation noise of 19 can be reduced.

Then, the air sucked by the damper I 29 at the suction part of the sub fan 19 is switched to either the suction air passage 22 or the air supply air passage 24 side, and the damper at the sub fan outlet 34. The air to be blown out of the II (31) is switched to either the indoor sub outlet 17 or the outdoor air supply / exhaust mechanism 18, and the operation mode of the sub fan unit 15 is circulated, exhausted and supplied. Switching to mode. That is, in the circulation operation, since the damper I 29 is on the (a) side and the suction air passage 22 is opened to shield the air supply passage 24, the indoor air is sucked through the suction air passage 22, and the damper II 31 is applied. ) Is on the (a) side and the air chamber 26 is opened to shield the exhaust air passage 23, so that the indoor air blown out from the casing 28 is blown into the air chamber 26 and through the sub blower outlet 17. It blows into the blowing duct 12 connected to the sub blower outlet 17. FIG.

Further, in the exhaust operation, the damper I 29 is on the (a) side and the suction air passage 22 is opened to shield the air supply passage 24, so that the indoor air is sucked through the suction air passage 22, but the damper II 31 ) Is on the side (b), the air chamber 26 is shielded, and the exhaust air passage 23 is opened. As a result, the indoor air taken out from the casing 28 flows into the exhaust air passage 23, and is exhausted from the supply / exhaust mechanism 18 to the outside through the insect repellent net 33.

In addition, in the air supply operation, the damper I 29 is on the (b) side and the air intake air passage 24 is opened by shielding the intake air passage 22, so that outdoor air is sucked through the air supply air passage 24, but the damper II 31 ) Is on the (a) side, so the air chamber 26 is opened to shield the exhaust air passage 23 so that the outdoor air blown out from the casing 28 is blown into the air chamber 26 and through the sub blower outlet 17. It blows into the blowing duct 12 connected to the sub blower outlet 17. FIG. In the present embodiment, the outdoor air sucked by the sub-fan 19 is sucked through the common air passage 25 from the air supply and exhaust pipe 18 to remove dust contained in the air from the surface of the air cleaner 21. In addition, the inside of the air cleaner 21 removes harmful substances in the human body contained in the air, passes through the air cleaner 21 and is led to the air supply air passage 24 to be sucked into the sub-fan 19.

At the time of stopping operation, both damper I 29 and damper II 31 are on the side of (b), and the outdoor air enters the room through air supply air passage 24 or through exhaust air passage 23. It is preventing. Therefore, it is not necessary to provide a counterwind prevention valve for preventing the outdoor air from invading through the air supply / exhaust air passage at the time of stopping operation.

Next, the details at the time of circular operation will be described with reference to Fig. 10 mainly.

Indoor air in the circulation operation is sucked from the sub suction port 16 (see FIG. 4) of the suction air passage 22. Although omitted in FIG. 10, the front part of the sub fan unit 15 (see FIG. 4) is provided with an extension of an indoor air filter 8 (see FIG. 3) for removing dust from the air in the room during the heating and cooling operation. As a result, the indoor air filter 8 removes dust contained in the air from the indoor air sucked by the sub inlet 16.

In the circular operation, the damper I 29 opens the inlet 22a of the intake air passage 22 by the motor I 30 to block the air intake port 24a. Therefore, indoor air is sucked from the inlet 22a. It enters the suction casing 22b, is sucked into the sub fan 19 through the mouth ring 27, and it is taken out from the periphery of the sub fan 19, and it collect | collects into the casing 28 and is taken out by the sub fan taking-out part 34. . The damper II 31 provided in the sub fan extraction part 34 blocks the exhaust blower opening 23a by the motor II 32, and opens the air chamber blower 26a. As a result, the indoor air blown out by the sub fan outlet 34 is introduced into the air chamber 26 through the air chamber blower 26a, and the variation of the flow velocity in the air chamber 26 is averaged to allow the air chamber 26 ), The positive pressure is increased, and the constant velocity of the air flow becomes high, so that the constant pressure is high, and the air is blown out from the sub blowout port 17 of the sub fan unit 15.

Although the blower duct 12 is not specified in FIG. 10A, the blower duct 12 is connected to the blower outlet 12a by contacting the sub blower outlet 17 as shown in FIG. The air taken out from 17 is blown into the blowing duct 12 as it is. The blowing duct 12 is disposed in the front face portion of the dew receiver 11 (see FIG. 3), and the front end of the blowing duct 12 is an outline of the air outlet 6 (see FIG. 1) of the indoor unit 1. The indoor air blown through the blower duct 12 in the center upper portion is blown out from the sub blowout unit 13 (see FIG. 2). Since the blowing duct 12 is provided in the front surface part of the dew receiver 11, it cools and cools in the case of a cooling operation by the dew receiver 11, and is heated and warmed in the case of a heating operation. The air flowing in the air blowing duct 12 is also precooled or preheated in each state by each operating state and taken out from the sub-outlet into the room. Therefore, even when the sub fan unit 15 is operated in the circulating operation mode, the air volume during the cooling operation or the heating operation is increased, so that the air precooled or preheated at the temperature of each operation state is taken out from the sub blowout unit. Therefore, it is possible to improve the cooling ability or the heating ability in each operation.

Next, details of the exhaust operation will be described with reference to Fig. 11 mainly.

As in the exhaust operation, the indoor air is removed from the air in the indoor air filter 8 (see FIG. 3) as in the circulation operation, and sucked into the intake air passage 22. The damper I 29 is at the same position as in the circulation operation, and the inlet port 22a is opened to block the air supply inlet port 24a. Therefore, the indoor air is sucked from the suction port 22a, enters the suction casing 22b, is sucked into the sub fan 19 through the mouth ring 27, is blown out from the periphery of the sub fan 19, and the casing 28 Gathered at) and is taken out to the sub fan take-out part 34.

In the case of the exhaust operation, the damper II 31 in the sub fan blower 34 opens the exhaust blower 23a to block the air chamber blower 26a, and thus is blown out to the sub fan blower 34. Therefore, the indoor air is blown into the exhaust air passage 23b through the exhaust blower 23a, and the direction of flow is deflected in the partition 23d through the insect repellent net 33 to face the upper air cleaner 21. And the indoor air which makes the surface of the air cleaner 21 flow upward is inverted by the ceiling part of the air cleaner 21, and is directed downward, and is discharged | emitted from the supply / exhaust mechanism 18 to the outdoors through the common air path 25. As shown in FIG. The dust removed from the outdoor air during the air supply operation is accumulated on the exhaust air passage 23 side of the air cleaner 21, but by allowing the indoor air during the exhaust operation to flow to the surface of the air cleaner 21, the air cleaner 21 By causing the turbulence by inverting at the ceiling of the c), the dust accumulated on the surface of the air cleaner 21 is effectively removed. In addition, the indoor air during the exhaust operation is also removed at the same time the insects, dust and the like attached to the supply and exhaust mechanism 18 side of the insect net 33. Therefore, the sub fan unit 15 repeats the air supply operation and the exhaust operation, thereby self-cleaning the air cleaner 21 and the insect repellent net 33, and the number of times the air cleaner 21 and the insect repellent net 33 are cleaned. Can be less. In addition, since the indoor air exhausted during the exhaust operation does not penetrate the inside of the air cleaner 21, the ventilation resistance during the exhaust operation is reduced, so that the amount of the indoor air exhausted can be increased.

Next, the detail at the time of air supply operation is demonstrated, referring mainly to FIG.

In the air supply operation, the damper I 29 at the inlet of the sub fan 19 shields the inlet 22a to open the air inlet 24a, and at the same time, the damper II (in the sub fan outlet 34). Since 31 opens the air chamber blower 26a to shield the exhaust blower 23a, the air supply air passage 24 and the common air passage 25 communicate with each other via the air cleaner 21. Therefore, when the sub fan 19 is driven in this state, the outdoor air is sucked from the air supply and exhaust port 18 through the common air path 25, and the sucked outdoor air causes the common air path 25 to be used as the air cleaner 21. ), And flows through the air cleaner 21 to the air supply air passage 24.

Then, when passing through the air cleaner 2l, dust contained in the air is removed from the surface of the air cleaner 21, and substances harmful to the human body contained in the air are removed from the inside of the air cleaner 2l. . As described above, the dust accumulated on the surface of the air cleaner 21 is removed from the indoor air flowing through the surface of the air cleaner 21 during the exhaust operation, and is discharged to the outside together with the indoor air from the air supply / exhaust mechanism 18 to air. The surface of the cleaner 21 is to be cleaned. In addition, even when insects and the like are sucked together with the outdoor air in the air supply operation, the insect repellent net 33 prevents the insects from invading the insects, and the exhaust blower port 23a of the exhaust air passage 23 is closed, so that Double intrusion of insects and the like is prevented.

The outdoor air sucked into the air supply path 24 is sucked from the air supply intake port 24a, enters the casing 22b, is sucked into the sub fan 19 from the mouth ring 27, and is taken out of the casing 28. It flows into the air chamber 26 from the air chamber blower 26a which is open by the fan blower part 34. As shown in FIG. The outdoor air flowing into the air chamber 26 flows into the blowing duct 12 from the sub blower outlet 17 and flows inside the blowing duct 12 similarly to the circulation operation. The indoor air is supplied cleanly by being supplied to the room as fresh outdoor air whose temperature is harmonized from the sub-outtake unit in accordance with the operating state temperature.

As described above, since the sub fan 19 of the sub fan unit 15 of the present invention is rotated in a predetermined direction, the sub fan 19 has the shape of the mouth ring 27 of the suction part and the shape of the casing 28. The sub fan unit 15 can be obtained which has a shape that can be adapted to the air conditioner, so that the blowing efficiency is good and the driving noise is low. Furthermore, the sub motor 20 which drives the sub fan 19 is arrange | positioned in the recessed part provided in the sub fan 19, and is located in the same plane surrounding the casing 28 of the sub fan 19 (that is, a casing). An exhaust air passage 23 and a common air passage 25 are provided outside the outer circumferential surface of 28 to form a blower mechanism having a small width dimension. In addition, the air cleaner 21 is disposed above the blower mechanism to make the width of the sub fan unit 15 thin, and the sub fan unit 15 to the indoor unit 1 without increasing the width of the indoor unit. I can store it.

Next, the effect of combining the air-conditioning operation of the indoor unit 1 with the operation mode of the sub fan unit 15 will be described with reference to FIGS. 13 and 14. FIG. 13 is an explanatory view when the cooling operation of the indoor unit of FIG. 1 is used in combination with the circulation operation or the air supply operation of the sub fan unit, and FIG. 14 is the heating operation of the indoor unit of FIG. 1 and the circulation operation or air supply operation of the sub fan unit. It is explanatory drawing in the case of using together.

In FIG. 13, when the indoor unit 1 is cooled and driven, and the sub fan unit 15 is circulated or supplied with air, the air blown out from the sub blowout unit 13 is blown while flowing through the blow duct 12. In FIG. Since the duct 12 is cooled by the dew receiver 11 and cooled, the duct 12 is cooled by the blowing duct 12. And the air cooled by the blowing duct 12 is blown out substantially horizontally like the arrow A from the sub blowout part 13 installed in the upper part of the outline center of the air blowout opening 6 of the indoor unit 1. As shown in FIG. On the other hand, in the cooling operation of the indoor unit 1, cooled cool air is blown out from the air outlet 6 as shown by arrow B, and cold air is blown to the far place of a room to cool the whole room.

In Fig. 13, the cold air of the sub fan unit 15 is subjected to the cold air of the cooling operation, so that the air volume of the cold air increases so that the room can be cooled quickly. Or the noise at the time of cooling operation can be made low by making the cooling ability the same, and reducing the air volume of a cooling operation by the quantity of air which the sub fan unit 15 blows. In addition, the air is blown out from the sub blower unit 13 substantially horizontally to cover the upper space of the room, so that the cold air blown out from the air outlet 6 can be effectively utilized in the living space of the lower part of the room. .

In addition, in FIG. 14, when the indoor unit 1 is heated and the sub-fan unit 15 is circulated or supplied with air, the air blown out from the sub blowout unit 13 causes the inside of the blower duct 12 to flow. During the flow, the blowing duct 12 is heated in the dew receiver 11 and warmed up, so that the blowing duct 12 is warmed in the blowing duct 12. And the air warmed by the blowing duct 12 is blown out substantially horizontally like the arrow A from the sub blowout part 13 provided in the upper part of the outline center of the air blowout opening 6 of the indoor unit 1.

On the other hand, the warm air heated by the heating operation of the indoor unit 1 to be warmed and taken out from the air outlet 6 tends to be constantly floating toward the upper part of the room since the specific gravity is light. Therefore, the warm air of the heating operation is blown downward from the air outlet 6 as shown by arrow B, and first, the bottom surface of the room is warmed, thereby heating the living space of the room while suppressing the warm air from rising toward the upper part of the room. In the conventional case where there is no hot air blown out from the sub blowout unit 13, the warm air blown out from the air blower outlet 6 starts to rise as indicated by arrow B, and reaches a warm hot air to a distant part of the room as the speed of the hot air is delayed. Light and warm air was kept in the upper space of the room because it could not be made. However, in the indoor unit 1 of the present embodiment, since the warm air is blown out substantially horizontally from the sub blowout unit 13 provided in the upper portion of the outline of the air blower outlet 6, the warm air of the arrow B to be ascended. The cover is covered with the warm air of the heating operation, and the warm air of the heating operation is guided to the distant part of the room by the warm air taken out from the sub blowout unit 13. Therefore, also in the heating operation of the indoor unit 1, more efficient heating operation can be performed by using the circulation operation or the air supply operation of the subfan unit 15 together.

As described above, since the blower duct 12 is installed on the front surface of the dew receiver 11, when the heat exchanger 10 of the indoor unit 1 is cooled in a cooling operation, the condensed cold drain water is received. The dew receiver 11 is cooled, and the blowing duct 12 provided on the front surface thereof is cooled by the dew receiver 11 to cool the air flowing therein. Therefore, even if hot outdoor air is supplied to the room during the cooling operation, the cooling duct 12 is preliminarily cooled and taken out to the room, which does not significantly impair the cooling effect.

In addition, when the heat exchanger 10 of the indoor unit 1 is heated by heating operation, the dew receiver 11 is heated directly and warms, and the blowing duct 12 provided in the front surface is dew receiver. It becomes warm by (11) and warms the air flowing through it. Therefore, even when cold outdoor air is supplied to the room during the heating operation, it is preheated by the blower duct 12 and taken out to the room, thereby not significantly impairing the heating effect.

In addition, the circulating operation, the exhaust operation, or the air supply operation may be performed solely by the sub fan unit 15 alone without performing the heating / cooling operation of the indoor unit 1, so that the indoor air may be smoothly circulated, or the indoor contaminated air may be discharged. Or, the outside can blow fresh air to clean the indoor air.

Next, the sub take-out part 13 is demonstrated, referring FIG. FIG. 15 is a cross-sectional view illustrating the presence or absence of a rectifying plate of the sub take-out part of the indoor unit of FIG. 1. FIG.

The wind direction rectifying plate 12b is provided in the sub blowout part 13 of the blowing duct 12 as shown in FIG. By providing the wind direction rectifying plate 12b, the air taken out from the sub blowout part 13 is deflected and flows along the wind direction rectifying plate 12b, and is taken out in a direction substantially perpendicular to the indoor unit 1. If there is no wind direction rectifying plate 12b, the air flowing in the air blowing duct 12 is taken out in an inclined direction as shown in Fig. 15 (b) by the inertia force, and the flow of cold air is prevented in the cooling operation described above. It is not possible to effectively induce or suppress the flow of warm air rising in the heating operation effectively.

In addition, since the air-cooled air taken out from the air outlet 6 during the air conditioning operation has a high flow rate at the center of the air outlet 6, the air outlet 13 is effectively cooled by providing the sub air outlet 13 at the uppermost outline center of the air outlet. It is possible to effectively induce the flow of cold wind in the operation, or to effectively suppress the flow of warm air rising in the heating operation.

According to the above embodiment, the main fan has a sub fan rotating in a predetermined direction separately from the main fan, an intake port and a casing adapted to the sub fan, and a suction air path in which indoor air is sucked and a blow air path for discharging indoor air and outdoor air. And a common air path shared by the exhaust and air supply, and the air sucked from the damper installed in the suction part of the sub-fan is switched to indoor air or outdoor air and blown out from the damper installed at the outlet of the casing. Assemble the sub fan unit to allow circulation operation, exhaust operation, and air supply operation by switching the air to indoors or outdoors, and rotate the sub fan in a predetermined direction so that the inlet and the casing of the sub fan are adapted to the sub fan. The separate type air conditioner which improves the blowing efficiency of a sub fan unit, and lowers the operation noise of a sub fan unit. It can be obtained within a unit.

In addition, a blower duct is provided at the front of the dew receiver of the indoor unit to direct the airflow blown out by the sub fan unit to the sub air outlet provided in the upper portion of the air outlet of the indoor unit at an approximately center upper portion, and to be blown out from the sub air outlet. The cooling air taken out in the cooling operation can be reached to a far place in the room, and the rise of the warm air taken out in the heating operation can be suppressed.

In addition, the air or the air purifier to clean the air through the air supply operation to remove the dust in the outdoor air, and during exhaust operation to the surface of the suction side of the filter or air cleaner in which dust of the filter or air cleaner is accumulated. A self-cleaning function can be built into the sub fan unit by blowing indoor air to clean the dust accumulated on the surface of the filter or air cleaner.

As is apparent from the description of the above embodiments, according to the present invention, even if it has the air supply function and the exhaust function, the air conditioner provided with the sub fan unit which is small in size and has high blowing efficiency and low operation noise can be obtained.

In addition, according to the present invention, an air conditioner capable of reaching the distant part of the room with the cold air taken out of the cooling operation to the distant part of the room by the outside air taken out from the sub fan unit can be obtained. .

Moreover, according to this invention, the air conditioner which can self-clean the dust removed by the suction side of an air cleaner at the time of air supply of a sub fan unit at the time of exhaust can be obtained.

Claims (10)

In the air conditioner which arrange | positions the indoor heat exchanger and main fan for air-conditioning indoor air in the horizontally long indoor unit, and provided the sub-fan unit which supplies air to the room indoors and exhausts indoor air to the outdoors, The sub fan unit is configured to switch the communication between the sub fan having the air supply and exhaust in the same rotational direction, the ventilation path of the sub fan, and the indoor sub vent port and the outdoor sub vent port of the air passage. An air conditioner, comprising: a damper for forming an air path. An indoor heat exchanger and a main fan for air conditioning the indoor air are arranged in a horizontally long indoor unit, and a sub fan unit for supplying air to the interior of the air and exhausting the indoor air to the outside is provided with a main fan in the indoor unit. In the air conditioner arranged on the opposite side to the main fan motor for driving, The sub fan unit is configured to switch the communication between the sub fan having the air supply and exhaust in the same rotational direction, the ventilation path of the sub fan, and the indoor sub vent port and the outdoor sub vent port of the air passage. An air conditioner, comprising: a damper for forming an air path. The air conditioner according to claim 1 or 2, wherein two indoor sub-vents are provided, and at the same time, a circulation air passage is formed which sucks indoor air from one indoor sub-vent vent and blows the air out from the other indoor sub-vent vent. An air conditioner, characterized in that the damper to be switched to. The sub fan of claim 1 or 2, wherein the sub fan comprises a centrifugal fan having a casing which sucks air from the axial direction in the longitudinal direction of the indoor unit and discharges the air in the circumferential direction. The exhaust fan of the sub fan is formed outside the outer circumferential surface of the casing, a motor of the sub fan is built in the center of the sub fan, and the sub fan unit is made thinner horizontally. An air conditioner housed in a side end portion of an indoor unit. The suction path according to claim 1 or 2, wherein the ventilation path of the sub fan is formed to have an intake air passage, a blowout air path, and a shared air path, and the common air path communicates with the outdoor sub air vent, and is switched by the damper. An air conditioner characterized by communicating an air flow path and said blow-out air path with said common air path. The sub blowout according to claim 1 or 2, wherein a main blowout outlet of the indoor air, which has been harmonized by the indoor heat exchanger, is formed in the lower portion of the indoor unit in a horizontal direction, and the sub blowout is connected to the blower air passage of the sub fan via a blower duct. An air conditioner, wherein a portion is provided directly above a central portion of the main air outlet. 7. The air inlet according to claim 6, wherein the indoor sub vent is divided into an indoor sub air outlet communicating with the air blow-out of the sub fan at the time of supply and an indoor sub air intake communicating with the air intake air of the sub fan at the exhaust. Air conditioner. The sub fan unit includes a filter or an air purifier, and the ventilation path of the sub fan is formed having a suction air passage, a blow air passage, and a common air passage, and the common air passage is formed on the outdoor side. The filter or the air cleaner is connected to the shared air passage by communicating with the sub-ventilator, communicating the suction air passage and the blow-out air passage switched by the damper with the common air passage, and becoming a suction air passage when being supplied with air. Air conditioner, characterized in that installed so as to avoid. The sub fan of claim 8, wherein the sub fan comprises a centrifugal fan having a casing which sucks air from the axial direction in the longitudinal direction of the indoor unit and discharges the air in the circumferential direction, and the suction air path of the sub fan is sucked by the casing. It is formed on the surface side, the exhaust air path of the sub fan is formed outside the outer peripheral surface of the casing, the motor of the sub fan is built in the central portion of the sub fan, and the filter or the air cleaner is disposed outside the outer peripheral surface of the casing And storing the sub fan unit horizontally and stored in the side end portion of the indoor unit. An air having a heat exchanger and an indoor fan for controlling the air in the room in a horizontally long indoor unit, and a sub-fan unit that performs an air supply operation for introducing outside air into the room and an exhaust operation for discharging the indoor air to the outside. In the conditioner, An air purifying filter is provided in the sub fan unit so that the air introduced during the air supply operation passes through the air cleaning filter, and the air path in the sub fan unit is prevented from passing through the air cleaning filter during the exhaust operation. Composed air conditioner.