CN100335848C - Air conditioner - Google Patents

Abstract

The invention relates to an air conditioner, in particular to an air conditioner which is suitable for setting an auxiliary fan in an indoor unit and has air supply and exhaust functions. Even if the air conditioner of the present invention has an air supply function and an exhaust function, it is possible to obtain a small air conditioner having an auxiliary fan unit with good air supply efficiency and low operating noise. In the air conditioner of the present invention, an indoor heat exchanger and a main fan for adjusting indoor air are arranged in a horizontally long indoor unit, and an auxiliary fan for supplying outdoor air to the room and exhausting indoor air to the outside is arranged on one side of the indoor unit. Fan unit (15). The auxiliary fan unit (15) is equipped with an auxiliary fan (19) that rotates in the same direction for air supply and exhaust, an air duct for the auxiliary fan (19), and a switchable air duct with indoor auxiliary vents and outdoor auxiliary vents The baffles (29, 31) for air supply and exhaust air ducts are formed in the connected state of the air.

Description

air conditioner

technical field

The invention relates to an air conditioner, in particular to an air conditioner which is suitable for setting an auxiliary fan in an indoor unit and has air supply and exhaust functions.

Background technique

As a prior art air conditioner of this type, there is an air conditioner described in Japanese Unexamined Patent Application Publication No. 2000-274727 (Patent Document 1). In this patent document 1, an indoor unit of a separate air conditioner is disclosed. An auxiliary fan capable of switching between forward rotation and reverse rotation is installed in an air duct for ventilation on the indoor unit. Direction of rotation, auxiliary fan unit with an exhaust function to discharge indoor air to the outside and an air supply function to draw outdoor air into the room.

Generally speaking, by limiting the rotation direction of the fan to one direction, and making the shape of the inlet that the fan sucks in or the shape of the shell that guides the air blown out by the fan into an ideal shape with respect to the direction of rotation, the blower can become a fan with good air supply efficiency and low noise. Low blower.

However, as described in Patent Document 1, when the rotation direction of the auxiliary fan is changed from forward to reverse to switch the air blowing direction, the air inlet during forward rotation becomes the air outlet during reverse rotation, and the reverse The air suction port during normal rotation becomes the air blowout port during forward rotation. Therefore, the air suction port and the air blowing port of the auxiliary fan cannot be formed into effective shapes corresponding to their respective functions. In addition, since the auxiliary fan must blow out the same air regardless of forward rotation or reverse rotation, it is impossible to maintain a blade shape with good air blowing efficiency. Therefore, in order to ensure the air volume necessary for ventilation, the shape of the auxiliary fan needs to be made large, and the size of the auxiliary fan unit incorporated in the indoor unit is increased. Furthermore, since the shape of the blades of the auxiliary fan and the shape of the air passage cannot be made into efficient shapes, the air blowing efficiency is deteriorated, and the noise of the auxiliary fan unit cannot be reduced.

In addition, in the air conditioner disclosed in Patent Document 1, the air blown from the auxiliary fan unit is blown only from the end of the indoor unit, so that the blown air cannot be effectively used in relation to the air blown from the main fan.

In addition, in the air conditioner of Patent Document 1, self-cleaning of the air filter or the air cleaner arranged in the auxiliary fan unit is not considered.

Contents of the invention

It is an object of the present invention to provide an air conditioner having an auxiliary fan unit that is small in size, high in air supply efficiency, and low in operating noise even though it has an air supply function and an exhaust function.

Another object of the present invention is to provide a device that uses the outside air blown from the auxiliary fan unit to send the blown cold air to a remote place in the room during the cooling operation, and can suppress the temperature rise of the blown warm air during the heating operation. air conditioner.

Still another object of the present invention is to provide an air conditioner capable of self-cleaning the dust removed on the suction side of the air cleaner during air supply by the auxiliary fan unit during exhaust.

Still another object of the present invention is to provide an air conditioner that reduces ventilation resistance when exhausting air while sucking air with a reduced degree of pollution into the room even when the outdoor air is polluted.

In order to achieve the above-mentioned first object, the air conditioner of the present invention arranges an indoor heat exchanger and a main fan for adjusting indoor air in a horizontally long indoor unit, and is provided with a device for supplying outdoor air indoors and discharging indoor air outdoors. In an air conditioner with an auxiliary fan unit, the auxiliary fan unit is characterized in that the auxiliary fan unit includes an auxiliary fan that rotates in the same direction for both air supply and exhaust, an air duct for the auxiliary fan, and an indoor auxiliary vent for switching to the air duct. And the communication state of the auxiliary vent on the outdoor side to form the baffle of the air duct for air supply and exhaust.

In order to better achieve the above-mentioned first object, the present invention adds the following structure to the above-mentioned structure.

Two of the above-mentioned indoor auxiliary ventilation openings are provided, and these two above-mentioned indoor auxiliary ventilation openings are used as the above-mentioned baffles for switching, so that the indoor air is sucked in from one indoor auxiliary ventilation opening, and the indoor air is sucked in from the other indoor side. A circulating air duct that blows out from the vent to the interior.

In addition, the auxiliary fan is constituted by a centrifugal fan having a casing that sucks in air from the longitudinal direction of the indoor unit, that is, the axial direction, and discharges air in the circumferential direction; the auxiliary fan is formed on the suction side of the casing. Intake air passage; Exhaust air passage of the above-mentioned auxiliary fan is formed outside the outer peripheral surface of the above-mentioned housing; The motor of the above-mentioned auxiliary fan is built in the central part of the above-mentioned auxiliary fan; The above-mentioned auxiliary fan unit is made horizontally thin and accommodated in The side end part inside the above-mentioned indoor unit.

Furthermore, the air passage of the above-mentioned auxiliary fan is formed by the suction air passage, the blowing air passage and the common air passage, the above-mentioned common air passage is communicated with the above-mentioned outdoor auxiliary ventilation opening, and the above-mentioned suction air passage and the above-mentioned blowing air passage switched by the above-mentioned baffle are connected. The air duct communicates with the above-mentioned common air duct.

In order to achieve the second object above, in the air conditioner of the present invention, the main air outlet for the indoor air conditioned by the indoor heat exchanger is formed in the lower part of the indoor unit in a horizontal direction, and is provided directly above the central part of the main air outlet. An auxiliary blowing part in which the air supply passage communicates with the blowing air passage of the above-mentioned auxiliary fan.

In order to better achieve the above-mentioned second object, the present invention also divides the above-mentioned indoor side auxiliary vent into the above-mentioned indoor side air outlet that communicates with the air outlet of the above-mentioned auxiliary fan during air supply, and the above-mentioned indoor side air outlet that communicates with the above-mentioned auxiliary fan during exhaust. The auxiliary suction port on the indoor side connected to the suction duct.

In order to achieve the above-mentioned third object, furthermore, the air conditioner of the present invention is further provided with a filter or an air cleaner in the above-mentioned auxiliary fan unit, and the air passage of the above-mentioned auxiliary fan is formed by the suction air passage, the blow-out air passage and the common air passage, The above-mentioned common air duct is communicated with the above-mentioned outdoor auxiliary ventilation opening, the above-mentioned suction air duct and the above-mentioned blowing air duct switched by the above-mentioned baffle are communicated with the above-mentioned common air duct, and the above-mentioned filter or the above-mentioned air cleaner and make its suction side face the above-mentioned common air duct.

In order to better achieve the above-mentioned other objects, furthermore, the above-mentioned auxiliary fan of the air conditioner of the present invention is composed of a centrifugal fan, and the above-mentioned centrifugal fan has the function of sucking in air from the longitudinal direction of the above-mentioned indoor unit, that is, the axial direction, and discharging it in the circumferential direction. The air casing; the suction air passage of the auxiliary fan is formed on the suction side of the above casing; the exhaust air passage of the auxiliary fan is formed outside the outer peripheral surface of the above casing; the auxiliary fan is built in the center of the auxiliary fan The above-mentioned filter or the above-mentioned air cleaner is provided outside the outer peripheral surface of the above-mentioned casing; the above-mentioned auxiliary fan unit is made laterally thinner and accommodated in the side end portion of the above-mentioned indoor unit.

In order to achieve the above-mentioned other objects, the air conditioner of the present invention is equipped with an indoor heat exchanger and a main fan for adjusting indoor air in a horizontally long indoor unit, and has an air supply operation for introducing outdoor air into the room and discharging it to the outside. In an air conditioner with an auxiliary fan unit for exhausting indoor air, an air purification filter is provided in the auxiliary fan unit; the air passage formed in the auxiliary fan unit allows Air passes through the air-purifying filter, but air does not pass through the air-purifying filter during the exhaust operation described above.

Description of drawings

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

Fig. 2 is a component arrangement diagram of the indoor unit of Fig. 1 .

Fig. 3 is a cross-sectional view along line A-A of Fig. 2 .

Fig. 4 is a B-B sectional view of Fig. 2 .

Fig. 5 is an external view of the auxiliary fan unit in Fig. 1 .

Fig. 6 is a perspective view omitting the right side plate of the auxiliary fan unit of Fig. 5 .

Fig. 7 is a perspective view omitting the left side panel of the auxiliary fan unit of Fig. 5 .

Fig. 8 is an air flow diagram schematically showing the auxiliary fan unit of Fig. 2 .

Fig. 9 is a diagram showing an operating state of the auxiliary fan unit of Fig. 2 .

Fig. 10 is a flow diagram of wind for explaining the circulation operation of the auxiliary fan unit of Fig. 2 .

Fig. 11 is a flow diagram illustrating the flow of air in the auxiliary fan unit of Fig. 2 during the exhaust operation.

Fig. 12 is a flow diagram for explaining the air supply operation of the auxiliary fan unit of Fig. 2 .

Fig. 13 is an explanatory diagram illustrating a case where the cooling operation of the indoor unit of Fig. 1 and the circulation operation or air supply operation of the auxiliary fan unit are used simultaneously.

Fig. 14 is an explanatory diagram illustrating a case where the heating operation of the indoor unit of Fig. 1 and the circulation operation or air supply operation of the auxiliary fan unit are used simultaneously.

Fig. 15 is a cross-sectional view illustrating the presence or absence of a rectifying plate of an auxiliary blow-out unit of the indoor unit of Fig. 1 .

Detailed ways

Hereinafter, one Example of the air conditioner of this invention is demonstrated using drawing.

Referring to Fig. 1 to Fig. 4, the overall structure and function of the air conditioner will be described. Fig. 1 is an external view of an indoor unit of an embodiment of the air conditioner of the present invention, Fig. 2 is a component arrangement diagram of the indoor unit of Fig. 1 , Fig. 3 is a sectional view of A-A of Fig. 2 , and Fig. 4 is a sectional view of B-B of Fig. 2 picture.

The air conditioner of the present invention is a separate air conditioner formed by connecting the indoor unit 1 and the outdoor unit through refrigerant pipes, drain hoses, electrical wiring, ventilation pipes and the like. The overall shape of the indoor unit 1 is horizontally long, and it is installed on the upper part of the indoor wall or the like.

The structure of the indoor unit 1 has a cabinet 2 , a decorative cover 3 and a front cover 4 . In the indoor unit, an air inlet 5 for sucking indoor air to be adjusted in temperature and humidity and an air outlet 6 for blowing out indoor air with adjusted temperature and humidity are formed in the vertical direction. At the lower part of the indoor unit 1, an air outlet 6 having a long horizontal length is provided, and the auxiliary outlet 13 constitutes a main outlet. A rotatable up and down wind direction deflector 7 is arranged at the air outlet 6 . The vertical wind direction deflector 7 is a plate for changing the direction of blown air, and is positioned to blow out horizontally during cooling operation, and is positioned to blow downward during heating operation.

In the case 2 , as shown in FIGS. 2 and 3 , a main fan 9 , a heat exchanger 10 and a dew tray 11 are installed. The main fan 9 is composed of a horizontally long axial flow fan, and is arranged in the center of the indoor unit 1 so that the indoor air is sucked in from the air inlet 5 and blown out from the air outlet 6 . The heat exchanger 10 is disposed on the suction side of the main fan 9 and is formed in a substantially inverted V shape. The dew pan 11 is disposed below the lower ends of the front and rear sides of the heat exchanger 10, and is provided to receive condensed water generated in the heat exchanger 10 during air-cooling operation or dehumidification operation, and discharge it to the outside. Through these, a main passage for flowing conditioned indoor air is formed. That is, indoor air is sucked in through the air inlet 5 by the operation of the main fan, cooled, dehumidified or heated by the heat exchanger 10 , and blown out from the air outlet 6 into the room.

The auxiliary fan unit 15 is disposed on one side inside the indoor unit 1 . Specifically, as shown in Figures 2 and 3, the auxiliary fan unit 15 is installed on the opposite side to the motor 9a of the main fan 9 in the operating cabinet 2, in other words installed on the left side of the main fan 9 and the heat exchanger 10. side. The auxiliary fan unit 15 is made thinner in the lateral direction. By arranging the auxiliary fan unit 15 on the opposite side to the main fan motor 9a, the exterior design of the indoor unit 1 can be made bilaterally symmetrical, and the appearance can be improved.

The auxiliary fan unit 15 has an auxiliary suction port 16 at the front that sucks in indoor air. The auxiliary suction port 16 is located behind the room air filter 8 and can suck room air through the room air filter 8 . The auxiliary suction port 16 constitutes an indoor auxiliary vent. In the present embodiment, the indoor side auxiliary vent is divided into two auxiliary suction ports 16 and auxiliary air outlets 17 which will be described later.

The air supply duct 12 communicates with the auxiliary air outlet 17 of the auxiliary fan unit 15 . The air supply channel 12 is located above the air outlet 6 and in front of the dew receiving tray 11 , and extends laterally to the center of the indoor unit 1 . The auxiliary outlet 13 is provided at the front end of the air duct 12 , in other words, directly above the center of the air outlet 6 . Through these, the air blown into the room from the auxiliary fan unit 15 is sent into the air duct 12 from the auxiliary air outlet 17 , and is blown out into the room from the auxiliary air outlet 13 at the front end of the air duct 12 .

The auxiliary fan unit 15 has an air supply and exhaust port 18 at the rear that discharges indoor air to the outside and takes in fresh outdoor air. The air supply and exhaust port 18 constitutes an outdoor ventilation port. Moreover, usually, a flexible air supply and exhaust channel is connected to the air supply and exhaust port 18, and the air supply and exhaust channel is led to the outdoor together with the refrigerant pipe connecting the indoor unit and the outdoor unit, and the front end of the air supply and exhaust channel is opened to in the atmosphere.

The electrical component 14 is provided at the right end of the indoor unit 1, in other words, at the right side of the heat exchanger 10, as shown in FIG. 2 . When the power switch of the indoor unit 1 is pressed, the control device of the electrical component 14 is activated to drive the main fan 9 . By driving the main fan 9, the indoor unit 1 sucks in the indoor air from the air inlet 5 through the indoor air filter 8, adjusts the temperature and humidity of the sucked indoor air with the heat exchanger 10, performs cross-flow with the main fan 9, and blows it out until the air is blown. In the outlet 6, indoor air with adjusted temperature and humidity is blown out from the air outlet 6 into the room, thereby adjusting the indoor environmental conditions to a state suitable for living.

Moreover, a dew-receiving pan 11 is provided on the lower part of the heat exchanger 10. In the case of air-cooling operation, the heat exchanger 10 cools the indoor air so that the moisture contained in the indoor air is condensed into cold condensed water that is exposed to dew. Pan 11 collects and drains to the outside through the drain hose. In addition, in the heating operation, since the heat exchanger 10 functions as a heater, the dew-receiving pan 11 provided under the heat exchanger 10 is heated and becomes warm. Therefore, the dew tray 11 is cooled by collecting cold condensed water in the case of air-cooling operation, and is cooled by being heated by the high-temperature heat exchanger 10 in the case of heating operation. Moreover, since the air supply channel 12 that guides the auxiliary fan unit 15 to blow air from the auxiliary outlet 17 is arranged in front of the dew receiving tray 11, it is directly at the temperature of the dew receiving tray 11. , is cooled and becomes cold, and in the case of heating operation, is heated and becomes hot. Therefore, the wind sent from the auxiliary fan unit 15, that is, the air flowing through the air supply passage 12, is cooled and becomes cold under the condition of air-conditioning operation while flowing through the air supply passage 12, and becomes cold under the condition of heating operation. Next, it is heated and becomes hot. In the case of using the auxiliary fan unit 15 to supply fresh air from the outside to the room, in the air-cooling operation, for example, hot outdoor air is supplied in summer, but it is pre-cooled while passing through the air duct 12. In addition, in the case of heating operation, for example, although cold outdoor air is supplied in winter, it is preheated while passing through the air duct 12, so that the indoor heating effect is not impaired.

In this embodiment, although the main fan motor 9a and electrical components 14 are arranged on the right side of the indoor unit 1, and the auxiliary fan unit 15 is arranged on the left side of the indoor unit 1, even if the arrangement is reversed, the same can be obtained. This embodiment has the same effect.

Next, the configuration and functions of the auxiliary fan unit 15 will be described mainly with reference to FIGS. 5 to 7 . 5 is an external view of the auxiliary fan unit in FIG. 1 , FIG. 6 is a perspective view omitting the right side plate of the auxiliary fan unit in FIG. 5 , and FIG. 7 is a perspective view omitting the left side plate of the auxiliary fan unit in FIG. 5 .

The structure of the auxiliary fan unit 15 is that the blower unit is arranged in the lower half, and the air cleaner 21 is arranged in the upper half. Since it is arranged vertically in a row up and down, the width dimension is relatively narrow, so that the indoor unit is not enlarged. The auxiliary fan unit 15 can be accommodated in the indoor unit 1 under the condition of a width dimension of 1.

The blower unit in the lower half of the auxiliary fan unit 15 includes an auxiliary fan 19 and an auxiliary motor 20 that drives the auxiliary fan 19 . The auxiliary fan 19 is constituted by a centrifugal fan having a casing 28 that sucks in air from the longitudinal direction of the indoor unit 1 , that is, the axial direction, and discharges air in the circumferential direction. The suction duct 22 of the auxiliary fan 19 is formed on the suction surface side of the casings 22b and 28 . In order to make the width dimension of the auxiliary fan unit 15 smaller, the auxiliary motor 20 is installed in the recess of the auxiliary fan 19 . An exhaust duct 23 of the auxiliary fan 19 is formed outside the outer peripheral surface of the casing 28 . A common air duct 25 communicating with the air supply and exhaust ports 18 is formed outside the outer peripheral surface of the casing 28 .

The air cleaner 21 is arranged above the suction air duct 22 , the exhaust air duct 23 and the shared air duct 25 . An air supply duct 24 is provided between the suction duct 22 and the air cleaner 21 . An air chamber 26 for guiding the flow of air blown out from the auxiliary fan 19 to the auxiliary air outlet 17 is provided below the suction duct 22 .

And also the suction portion of auxiliary fan 19 is provided with baffle plate 129, by driving baffle plate 129 with motor 130, the suction port 22a that is arranged on suction air passage 22 and the air supply port 24a that is arranged on air supply air passage 24 When one side is opened, it can cover the other side. In addition, the baffle II 31 is also provided in the auxiliary fan blowing part 26a that gathers the air blown by the auxiliary fan 19 into the housing 28 and sends it out, and the baffle II 31 is driven by the motor II 32 to make the air set in the air chamber 26 Either one of the room blowing port 26a and the exhaust blowing port 23a provided in the exhaust duct 23 is opened so as to shield the other.

On the opposite side of the air chamber 26 where the air chamber blowing port 26a is provided, the auxiliary blowing port 17 for blowing air to the blowing duct 12 (see FIG. 2 ) is provided. In addition, an insect net 33 for preventing insects and the like from entering from the outside is provided in the exhaust duct 23 . And partition plate 23d is set in exhaust air duct 23, makes the indoor air discharged by exhaust air duct 23 flow to the surface of air cleaner 21, removes the dust accumulated on the surface of air cleaner 21, makes dust and passes through common wind The indoor air discharged from the channel 25 is discharged from the supply and exhaust ports 18 together. Thus, during air supply operation, the dust accumulated on the suction side of the air cleaner 21 is removed from the inhaled outdoor air and removed by the discharged indoor air, so the auxiliary fan unit 15 has a self-cleaning effect on the air cleaner 21. Function. In addition, since the exhausted indoor air does not pass through the air cleaner 21 during the exhaust operation, the ventilation resistance during the exhaust operation can be reduced, and the amount of indoor air to be exhausted can be increased.

Since the air cleaner 21 must be replaced or cleaned as needed, it is not necessary to remove the entire auxiliary fan unit 15 from the indoor unit 1, but only need to open the front cover 4 and hold the handle 21a to pull out the auxiliary fan unit 15. Take out the air cleaner 21. In addition, the insect net can also be taken out in the same way.

In addition, in this embodiment, although the air cleaner 21 is used to remove not only the dust in the air but also the components harmful to the human body for the outdoor air sucked in during the air supply operation, general filtering can also be used. The filter only removes dust from the air.

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

In the auxiliary fan unit 15 , there are three modes of operation: circulation operation, ventilation operation, and air supply operation, and a state in which the operation is stopped. Moreover, the flow direction of the wind and the opening and closing position of the baffle in each operation pattern are as shown in FIG. 9 . In addition, in the state of stoppage of operation, there is certainly no flow of wind, and the baffle plate I 29 and the baffle plate II 31 are in their respective positions (b), preventing outdoor air from intruding into the room from the exhaust air duct 23 and the air supply air duct 24. In addition, although not specifically described, each operation mode is switched by the operation part of the remote control switch, or by the operation part of the indoor unit 1 . The auxiliary fan unit 15 may be operated in conjunction with the cooling and heating operation of the indoor unit 1, and the auxiliary fan unit 15 may be operated independently. Furthermore, it is also possible to set a timer in the auxiliary fan unit 15 so that it can automatically stop running after a certain period of time.

As shown in Figure 8, the auxiliary fan 19 used in the auxiliary fan unit rotates in a certain direction to make the air flow in the direction of the arrow, so the inlet ring 27 at the suction portion of the auxiliary fan 19 is made to adapt to the auxiliary fan. The shape of 19, because shell 28 also can be made into the shape that adapts to auxiliary fan 19, thereby can improve the air blowing efficiency of auxiliary fan 19, can reduce the operating noise of auxiliary fan 19.

And the air that is sucked is switched to any one side of suction air passage 22 or air supply air passage 24 with the baffle plate I 29 that is positioned at the suction portion of auxiliary fan 19, with the baffle plate II 31 that is positioned at auxiliary fan blowout portion 34 blown out The air is switched to any one of the auxiliary outlet 17 on the indoor side or the air supply and exhaust outlet 18 on the outdoor side, thereby switching the operation mode of the auxiliary fan unit 15 into circulation operation, exhaust operation, and air supply operation. That is, in the cycle operation, since the baffle plate I 29 is on the (a) side, the suction air duct 22 is opened to cover the air supply air duct 24, so the indoor air is sucked through the suction air duct 22, and because the baffle plate II 31 is on the (a) side Side, open the air chamber 26 and cover the exhaust air duct 23, so the indoor air blown out from the shell 28 is sent into the air chamber 26, and sent into the air supply channel 12 connected with the auxiliary outlet 17 through the auxiliary outlet 17.

In addition, in the exhaust operation, since the baffle I 29 is on the (a) side, the suction air duct 22 is opened to cover the air supply air duct 24, so the indoor air is sucked through the suction air duct 22, but because the baffle II 31 is located at ( b) side, so the air chamber 26 is covered and the exhaust air duct 23 is opened. Therefore, the indoor air blown out from the casing 28 flows in the exhaust air duct 23, and is discharged outdoors from the air supply and exhaust port 18 through the insect-proof net.

In addition, in the air supply operation, since the baffle plate I 29 is on the (b) side, it covers the suction air duct 22 and opens the air supply air duct 24, so the outdoor air is sucked through the air supply air duct 24, because the baffle plate II 31 is in ( a) side, open the air chamber 26 and cover the exhaust air duct 23, so the outdoor air blown out from the shell 28 is sent into the air chamber 26, and sent into the air supply channel 12 connected with the auxiliary outlet 17 through the auxiliary outlet 17 . And in the present embodiment, the outdoor air sucked by the auxiliary fan 19 is sucked from the supply and exhaust port 18 through the shared air duct 25, and the dust contained in the air is removed on the surface of the air cleaner 21, The substances harmful to the human body contained in the air are removed inside, and after passing through the air cleaner 21, they are guided to the air supply duct 24, thereby being inhaled by the auxiliary fan 19.

In addition, when the operation stopped, the baffle plate I 29 and the baffle plate II 31 were all on the (b) side, preventing outdoor air from entering the room through the air supply duct 24 or the exhaust air duct 23. For this reason, there is no need to provide a backwind prevention valve for preventing intrusion of outdoor air through the air supply and exhaust ducts when the operation is stopped.

Next, details of the cycle operation will be described mainly with reference to FIG. 10 .

Indoor air during circulation operation is sucked through the auxiliary suction port 16 (see FIG. 4 ) of the suction duct 22 . Although it is omitted in Fig. 10, since the indoor air filter 8 (refer to Fig. 3) which removes dust from the indoor air during cooling and heating operation is extended on the front part of the auxiliary fan unit 15 (refer to Fig. 4), the indoor The air filter 8 also removes dust contained in the room air sucked in from the auxiliary suction port 16 .

During cycle operation, the baffle 129 utilizes the motor 130 to open the suction port 22a of the suction duct 22, and covers the air supply suction port 24a, so the indoor air is sucked from the suction port 22a, sent into the suction shell 22b, and passed through the inlet ring. 27 is sucked in by the auxiliary fan 19, blown out from the periphery of the auxiliary fan 19, gathered by the case 28, and blown out to the auxiliary fan blowing part. The baffle plate II 31 arranged on the auxiliary fan blowing part 34 utilizes the motor II 32 to shield the exhaust air supply port 31a and open the air chamber air supply port 26a. Thus, the indoor air blown out by the auxiliary fan blowing part 34 flows into the air chamber 26 through the air chamber air supply port 26a, and the fluctuation of the flow velocity is averaged in the air chamber 26, and the static pressure of the air chamber 26 is increased, so that the flow velocity becomes uniform. Air with a high static pressure is blown out from the auxiliary outlet 17 of the auxiliary fan unit 15 .

Although the air supply channel 12 is not clearly shown in FIG. 10(a), as shown in FIG. Still send in the air supply channel 12 as it is. The air supply channel 12 is disposed in front of the dew receiving tray 11 (refer to FIG. 3 ), and the front end of the air supply channel 12 is positioned at the substantially central upper part of the air outlet 6 (refer to FIG. 1 ) of the indoor unit 1. (Refer to FIG. 2 ) The room air sent to the air duct 12 is blown out. Since the air supply duct 12 is provided in front of the dew-receiving tray 11, it is cooled by the dew-receiving tray 11 during the air-conditioning operation and becomes cold, and is heated and becomes hot during the heating operation. The air flowing through the blowing passage 12 is also pre-cooled or pre-heated in each state depending on the operating state, and then blown out into the room from the auxiliary blowing part. Therefore, even when the auxiliary fan unit 15 is operated in a circulating operation mode, the air volume during the air-cooling operation or the heating operation increases, and the air blown out from the auxiliary blower unit by pre-cooling or pre-heating to the temperature of the respective operating states Since the air is blown out, it is possible to improve the cooling capacity or the heating capacity of each during operation.

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

The indoor air during the exhaust operation removes dust in the air with the indoor air filter 8 (refer to FIG. 3 ) and is sucked in by the suction air duct 22 as in the circulation operation. Then, when the baffle plate 129 is in the same position as the cycle operation, the suction port 22a is opened to cover the air supply suction port 24a. Therefore, indoor air is sucked from the suction port 22a, enters the suction casing 22b, is sucked by the auxiliary fan 19 through the inlet ring 27, blows out from around the auxiliary fan 19, is gathered by the casing 28, and is blown out by the auxiliary fan blower 34.

And under the situation of exhaust operation, because the baffle plate II 31 being in the auxiliary fan blowing part 34 opens the exhaust blowing port 23a and shields the air chamber blowing port 26a, so the indoor air blown out by the auxiliary fan blowing part 34 passes through the exhaust air. The air supply air port 23a is sent into the exhaust air duct 23b, passes through the insect-proof net 33, and uses the partition plate 23d to deflect the direction of the airflow to the air cleaner 21 above. Then, the indoor air flowing above the surface of the air cleaner 21 turns downward at the top of the air cleaner 21 and is discharged to the outside through the shared air duct 25 from the air supply and exhaust port 18 . Although the dust removed from the outdoor air during the air supply operation is accumulated on the exhaust air duct 23 side of the air cleaner 21, the indoor air during the exhaust operation flows through the surface of the air cleaner 21 and passes through the The top of the air cleaner 21 is reversed to generate turbulent flow, thereby effectively removing dust accumulated on the surface of the air cleaner 21 . In addition, insects and dust adhering to the air supply and exhaust port 18 side of the insect screen 33 in the indoor air during exhaust operation are also removed at the same time. Therefore, the auxiliary fan unit 15 performs self-cleaning of the air cleaner 21 and the insect net 33 by repeating the air supply operation and the exhaust operation, thereby reducing the number of cleanings of the air cleaner 21 and the insect net 33 . In addition, since the exhausted indoor air does not pass through the air cleaner 21 during the exhaust operation, the ventilation resistance during the exhaust operation can be reduced, thereby increasing the amount of exhausted indoor air.

Next, details of the air supply operation will be described mainly with reference to FIG. 12 .

During air supply operation, when the baffle plate I 29 of the suction portion of the auxiliary fan 19 covers the suction port 22a and opens the air supply suction port 24a, the air chamber air supply port is opened due to the baffle plate II 31 of the auxiliary fan blowing portion 34 26a to cover the exhaust air outlet 23a, so the air supply duct 24 and the common air duct 25 are communicated through the air cleaner 21. Therefore, when the auxiliary fan 19 is driven in this state, outdoor air is sucked in from the supply and exhaust port 18 through the shared air duct 25, and the sucked outdoor air rises to the air cleaner 21 through the shared air duct 25, and flows into the air cleaner 21 through the air cleaner 21. Air supply duct 24.

And, when passing through the air cleaner 21 , dust contained in the air is removed on the surface of the air cleaner 21 , and substances harmful to the human body contained in the air are removed inside the air cleaner 21 . The dust accumulated on the surface of the air cleaner 21 is removed by the indoor air flowing through the surface of the air cleaner 21 during the exhaust operation as previously explained, and is discharged from the supply and exhaust port 18 together with the indoor air to the outside, thereby The surface of the air cleaner 21 is cleaned. In addition, during air supply operation, even if insects and the like are inhaled together with the outdoor air, since the insect-proof net 33 closes the exhaust air supply port 23a of the exhaust air duct 23 while preventing the intrusion of insects and the like, it is doubled. It prevents the invasion of insects and the like into the room.

The outdoor air sucked into the air supply duct 24 enters the suction housing 22b from the air supply inlet 24a, is sucked in by the auxiliary fan 19 from the inlet ring 27, blows out into the housing 28, and is sent from the air chamber opened at the auxiliary fan blowing part 34. The tuyere 26 a flows into the air chamber 26 . The outdoor air flowing into the air chamber 26 flows into the air supply duct 12 from the auxiliary outlet 17 in the same manner as the circulating operation, and the temperature of the air is adjusted to the temperature of the operating state of the indoor unit 1 while flowing through the interior of the air supply duct 12. The auxiliary blowing unit supplies the indoor air as fresh outdoor air whose temperature has been adjusted, thereby renewing the indoor air.

As explained above, since the auxiliary fan 19 of the auxiliary fan unit 15 of the present invention rotates in a certain direction, the shape of the inlet ring 27 of the suction part and the shape of the casing 28 can adopt a shape that is not reluctantly adapted to the auxiliary fan 19. An auxiliary fan unit 15 with good air blowing efficiency and low operating noise is obtained. Furthermore, the auxiliary motor 20 for driving the auxiliary fan 19 is arranged in a recess provided on the auxiliary fan 19, and the exhaust air is arranged along the same plane as the casing 28 surrounding the auxiliary fan 19 (that is, along the outer side of the outer peripheral surface of the casing 28). The air duct 23 and the shared air duct 25 are used to construct an air supply mechanism with a thin width. In addition, the air cleaner 21 is arranged on the upper part of the blower mechanism, and the width dimension of the auxiliary fan unit 15 is made thinner, so that the auxiliary fan unit 15 can be accommodated in the indoor unit without increasing the width dimension of the indoor unit. 1 in.

Next, the effect of combining the cooling operation of the indoor unit and the operation mode of the auxiliary fan unit 15 will be described with reference to FIGS. 13 and 14 . Fig. 13 is an explanatory diagram of a case where the indoor unit in Fig. 1 is used for cooling operation and the auxiliary fan unit for circulation or air supply operation at the same time, and Fig. 14 is for the indoor unit in Fig. 1 to be used for heating operation and the auxiliary fan unit for circulation operation Or an explanatory diagram of the air supply operation.

In FIG. 13 , when the indoor unit 1 is in cooling operation and the auxiliary fan unit 15 is in circulation operation or air supply operation, the air blown from the auxiliary blower 13 flows through the air supply duct 12 because the air supply duct 12 is blocked. The dew-receiving tray 11 cools and becomes cold, and thus is cooled by the air-sending duct 12 . Then, the air cooled by the blowing duct 12 is blown out substantially horizontally as indicated by arrow A from the auxiliary blowing part 13 provided at the upper center of the air blowing port 6 of the indoor unit 1 . On the other hand, during the cooling operation of the indoor unit 1, the cooled cold air is blown out from the air outlet 6 as shown by arrow B, and the cold air is sent to a remote place in the room, thereby cooling the whole room.

In FIG. 13 , since the cooling air of the auxiliary fan unit 15 is added to the cooling air of the circulation operation or the air supply operation, the air volume of the cooling air can be increased to rapidly cool the room. Alternatively, by making the cooling capacity the same, the noise during air-conditioning operation can be reduced by reducing the proportion of the auxiliary fan unit 15's blowing air volume and the air-conditioning operation air volume. In addition, by blowing out air substantially horizontally from the auxiliary blowing part 13, since the upper space in the room is covered, the cool air blown out from the air outlet 6 can be effectively used in the living space in the lower part of the room.

In addition, in FIG. 14 , when the indoor unit 1 is in the heating operation and the auxiliary fan unit 15 is in the circulation operation or the air supply operation, while the air blown from the auxiliary blower unit 13 flows through the inside of the air duct 12, Since the air supply channel 12 is heated and warmed by the dew receiving tray 11 , it is heated and warmed by the air supply channel 12 . Then, the air heated and warmed by the blowing duct 12 is blown out substantially horizontally as indicated by the arrows from the auxiliary blowing part 13 provided at the upper center of the air blowing port 6 of the indoor unit 1 .

On the other hand, the warm air blown out from the air outlet 6 heated and warmed during the heating operation of the indoor unit 1 tends to continuously float toward the upper part of the room because the specific gravity becomes lighter. Therefore, the warm air of the heating operation is blown downward from the air outlet 6 as shown by the arrow B, and first heats the floor of the room, and the living space of the room is heated while restraining the warm air from rising to the upper part of the room. In the conventional situation where there is no warm air blown out from the auxiliary blowing unit 13, the warm air blown out from the air outlet 6 slows down as the speed of the warm air begins to rise as shown by arrow B, and the warm air blown out becomes warmer. It cannot reach the far side of the room, so the lighter warm air stays in the upper space of the room. However, in the indoor unit 1 of the present embodiment, since warm air is blown out substantially horizontally as shown by arrow A from the auxiliary blowing part 13 provided at the substantially central upper part of the air blowing outlet 6, the heat of the arrow B that is about to rise is blown out. While serving as a cover in the warm air of the heating operation, the warm air blown from the auxiliary blowing part 13 is used to guide the warm air of the heating operation to a distant place in the room. Therefore, even during the heating operation of the indoor unit 1, more efficient heating operation can be performed by using both the circulation operation and the air supply operation of the auxiliary fan unit 15 at the same time.

As previously explained, since the air supply duct 12 is arranged in front of the dew-receiving tray 11, when the heat exchanger 10 of the indoor unit 1 is cooled during the air-conditioning operation, the dew-receiving tray 11 receives condensed cold condensed water. For cooling, the air supply passage 12 arranged in front thereof is cooled by the dew receiving tray 11 to become cold, thereby cooling the air flowing therethrough. Therefore, even if hot outdoor air is supplied to the room during air-cooling operation, it is blown into the room after being pre-cooled by the air supply passage 12, so there is no great influence on the cooling effect.

In addition, when the heat exchanger 10 of the indoor unit 1 is heated during heating operation, the dew-receiving tray 11 is directly heated and warmed, and the air-supply duct 12 provided in front of it is heated by the dew-receiving tray 11 to become warm, and the air flow The air passing through it also warms up. Therefore, even if cold outdoor air is supplied to the room during the heating operation, it is blown out into the room after being preheated by the air supply duct 12, so there is no great influence on the heating effect.

Furthermore, without cooling or heating operation of the indoor unit 1, the auxiliary fan unit 15 alone performs circulation operation, exhaust operation or air supply operation to slowly circulate the indoor air or discharge indoor dirty air, or Bringing in fresh air from the outside can renew the air in the room.

Next, the auxiliary blowing unit 13 will be described with reference to FIG. 15 . Fig. 15 is a cross-sectional view illustrating the presence or absence of a rectifying plate of an auxiliary blow-out unit of the indoor unit of Fig. 1 .

As shown in FIG. 15( a ), a wind direction straightening plate 12 b is provided in the auxiliary blowing portion 13 of the air duct 12 . The air blown out from the auxiliary blower part 13 by providing the wind direction straightening plate 12b deflects along the wind direction straightening plate 12b and blows out in a direction substantially perpendicular to the indoor unit 1 . In the absence of the wind direction rectifying plate 12b, the air flowing through the air duct 12 is blown obliquely due to the inertial force as shown in FIG. flow, or cannot effectively suppress the flow of rising warm air during heating operation.

In addition, during cooling or heating operation, the cooled or heated air blown out from the air outlet 6 has a fast flow velocity at the central part of the air outlet 6, so by providing an auxiliary air blower at the approximate upper part of the air outlet, The blower unit 13 can effectively guide the flow of cold air during cooling operation, or effectively suppress the flow of rising warm air during heating operation.

According to the above-described embodiment, while having another auxiliary fan rotating in a certain direction different from the main fan, the suction port and the casing adapted to the auxiliary fan, the suction duct for sucking in indoor air, the discharge air duct for discharging indoor air, and the The air supply duct that sucks in outdoor air and the common air duct shared by exhaust and air supply use the baffle installed in the suction part of the auxiliary fan to switch the inhaled air into indoor air or outdoor air, and use the blower installed in the casing The baffle at the top switches the blown air to indoor or outdoor, and by installing an auxiliary fan unit capable of circulating operation, exhaust operation, and air supply operation, the auxiliary fan rotates in a certain direction to make the suction port of the auxiliary fan and the casing By forming a shape suitable for the auxiliary fan, the air blowing efficiency of the auxiliary fan unit can be improved, and an indoor unit of a separate air conditioner with reduced operating noise of the auxiliary fan unit can be obtained.

In addition, an air supply channel is provided at the front of the dew tray of the indoor unit, and the airflow blown out by the auxiliary fan unit is guided to the auxiliary air outlet provided at the upper center of the air outlet of the indoor unit, and blown out from the auxiliary air outlet, While sending cold air blown to a remote place in the room during air-conditioning operation, it can suppress the rise of warm air blown out during heating operation.

In addition, dust in the outdoor air is removed by passing the air through a filter or air cleaner that purifies the air during air supply operation, and the filter or air filter that accumulates dust on the filter or air cleaner during exhaust operation The surface of the suction side of the purifier blows out the exhausted indoor air to clean the dust accumulated on the surface of the filter or the air purifier, and the self-cleaning function can be constructed in the auxiliary fan unit.

As apparent from the description of the above embodiments, according to the present invention, even if it has an air supply function and an exhaust function, it is possible to obtain a small air conditioner having an auxiliary fan unit with high air supply efficiency and low operating noise.

In addition, according to the present invention, by using the outdoor air blown from the auxiliary fan unit, it is possible to obtain an air conditioner capable of sending the blown cold air to a remote place in the room during the cooling operation and suppressing the rise of the warm air blown out during the heating operation. .

Furthermore, according to the present invention, it is possible to obtain an air conditioner capable of self-cleaning the dust removed on the suction side of the air cleaner during air supply by the auxiliary fan unit during exhaust.

Claims (8)

1. An air conditioner in which an indoor heat exchanger and a main fan for adjusting indoor air are arranged in a horizontally long indoor unit, and an auxiliary fan unit for supplying outdoor air to the room and exhausting indoor air to the outside is provided. , characterized by: The auxiliary fan unit above has: Auxiliary fans that rotate in the same direction for both supply and exhaust; As the damper forming the air passage, by switching its position, the air supply air passage for supplying outdoor air from the auxiliary fan to the room is formed in the case of the air supply operation mode, and the auxiliary fan is formed in the case of the exhaust operation mode. Baffles for exhaust ducts that carry indoor air to the outside. 2. An air conditioner, in which an indoor heat exchanger and a main fan for adjusting indoor air are arranged in a horizontally long indoor unit, and on the opposite side to a main fan motor for operating the main fan in the indoor unit In an air conditioner equipped with an auxiliary fan unit for supplying outdoor air indoors and exhausting indoor air outdoors, it is characterized in that: The auxiliary fan unit above has: Auxiliary fans that rotate in the same direction for both supply and exhaust; As the damper forming the air passage, by switching its position, the air supply air passage for supplying outdoor air from the auxiliary fan to the room is formed in the case of the air supply operation mode, and the auxiliary fan is formed in the case of the exhaust operation mode. Baffles for exhaust ducts that carry indoor air to the outside. 3. The air conditioner according to claim 1 or 2, wherein the baffle plate forms an air duct through which the auxiliary fan sucks in indoor air and blows it out into the room when the baffle plate is in a cycle operation mode. 4. The air conditioner according to claim 1 or 2, wherein the auxiliary fan is constituted by a centrifugal fan, and the centrifugal fan has a function of sucking in air from the longitudinal direction of the indoor unit, that is, the axial direction, and discharging it in the circumferential direction. The air casing; the suction air passage of the auxiliary fan is formed on the suction side of the above casing; the exhaust air passage of the auxiliary fan is formed outside the outer peripheral surface of the above casing; the auxiliary fan is built in the center of the auxiliary fan the electric motor; the auxiliary fan unit is made laterally thinner and accommodated in the side end portion of the indoor unit. 5. The air conditioner according to claim 1 or 2, wherein a main outlet for indoor air conditioned by the indoor heat exchanger is formed horizontally at the lower part of the indoor unit, and is located at the center of the main outlet. An auxiliary blowing part communicating with the blowing air passage of the above-mentioned auxiliary fan through the air supply passage is arranged directly above the position. 6. The air conditioner according to claim 1 or 2, wherein a filter or an air cleaner is provided in the air supply duct of the auxiliary fan unit. 7. The air conditioner according to claim 6, wherein the auxiliary fan is constituted by a centrifugal fan, and the centrifugal fan has a function of sucking in air from the longitudinal direction of the indoor unit, that is, the axial direction, and discharging the air in the circumferential direction. A casing; a suction air path of the auxiliary fan is formed on the suction side of the casing; an exhaust air path of the auxiliary fan is formed outside the outer peripheral surface of the casing; a motor of the auxiliary fan is built in the center of the auxiliary fan ; The above-mentioned filter or the above-mentioned air cleaner is provided outside the outer peripheral surface of the above-mentioned housing; 8. In an air conditioner in which an indoor heat exchanger and a main fan for adjusting indoor air are arranged in a horizontally long indoor unit, and an auxiliary fan unit for supplying outdoor air to the room and exhausting indoor air to the outside is installed, it is characterized in that : The auxiliary fan unit above has: Auxiliary fans that rotate in the same direction for both supply and exhaust; Air purification filter; As the baffle plate forming the air passage, by switching its position, the air supply air passage for supplying outdoor air from the above-mentioned auxiliary fan to the room through the above-mentioned air purification filter is formed in the case of the air supply operation mode, and in the case of the exhaust operation mode. A baffle plate is formed on the lower part of the exhaust duct for discharging indoor air to the outside by the auxiliary fan without passing through the air purification filter.

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