JPH08210663A - Indoor equipment of air conditioner - Google Patents

Abstract

PURPOSE: To provide indoor equipment of an air conditioner which is capable of cooling an electrical equipment chamber without using any special components. CONSTITUTION: An indoor air is breathed from an air inlet by means of a cross flow fan 13 installed to a heat exchanger chamber 5 formed in a main body 1 while the air heated and cooled with a heat exchanger is arranged to be blown out of an air outlet. The main body 1 is divided to the heat exchanger chamber 5 and an electrical equipment chamber which is partition- formed close to the heat exchanger chamber 5 on one side of the main body 1. Further, the cross flow fan 13 is extended so that it may be incorporated into the electrical equipment chamber 11 from the heat exchanger 5, thereby forming an extension fan section 15. At the same time, a propeller fan section 17, which turns with the extension fan 15 is installed. This propeller fan section 17 is designed to introduce the air prevailing in the electrical equipment chamber 11 inside the cross flow fan 13 to the spot located at the heat exchanger chamber 5 inside the cross flow fan 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly to a fan motor for rotationally driving a cross flow fan for blowing out air heated / cooled by a heat exchanger from an outlet, The present invention relates to an electric equipment room in which electric equipment parts are arranged, cooled by air.

[0002]

2. Description of the Related Art In an indoor unit of an air conditioner, which is an example of a conventional air conditioner, it is mounted inside an indoor unit main body (hereinafter referred to as main body) 1 as shown in FIGS. A suction port 2 for sucking the inside of the room provided in the front case 1a, an evaporator 3 as a heat exchanger for heating / cooling the sucked indoor air, and a heating / cooling provided under the suction port 2 A heat exchange chamber 5 having an outlet 4 for blowing air into the room is formed.

A cross flow fan 6 is provided in the heat exchange chamber 5, and the cross flow fan 6 is provided.
After sucking the air in the room from the suction port 2, the air is passed through the evaporator 3 to be heated / cooled, and the heated / cooled air is blown into the room from the air outlet 5.

Reference numeral 7 denotes a frame which is disposed inside the main body 1 so as to face the rear of the evaporator 3 and forms an air passage R for partitioning the heated / cooled air to the air outlet 4 together with the evaporator 3. , The cross flow fan 6 has the air passage R
It is arranged to be. Further, 8 is a first airflow direction changing plate which is provided in the air outlet 4 and changes the leftward and rightward airflow direction of the air blown out, and 8a is a second airflow direction change plate which changes the up and down air flow direction.

On the other hand, one side of such a main body 1 is shown in FIG.
As shown in FIG. 7, a fan motor 9 that is adjacent to the heat exchange chamber 5 and has a cross-flow fan 6 fixed to its rotating shaft 9 a to drive the cross-flow fan 6 to rotate, and control for controlling the drive of the fan motor 9. A board 10 to which parts and the like are mounted and an electrical equipment chamber 11 in which electrical components such as a power transistor 10a for starting a motor are arranged are partitioned by a partition plate 12. Thereby, the main body 1 is divided into the heat exchange chamber 5 and the electrical equipment chamber 11.

[0006]

By the way, recently, there is an increasing demand for a small-sized and high-power indoor unit, and in order to realize such an indoor unit, a small-sized and high-power fan motor 9 is used.
However, in order to drive such a fan motor 9, it is necessary to supply a large current to the fan motor 9. However, the fan motor 9
When the flow rate is increased to 1, the amount of heat generated by the fan motor 9 increases and the temperature inside the electrical equipment room rises.

When the temperature inside the electrical equipment chamber rises in this way, the service life of electrical components such as the substrate 10 shortens and reliability decreases, so it is necessary to cool the electrical equipment chamber. Therefore, in the conventional indoor unit, for example, as shown in FIG. 5, a ventilation hole 11a is formed at a predetermined position of the rear case 1b of the main body 1, and the indoor air is allowed to flow in from this ventilation hole 11a by natural convection to cause the electrical equipment room However, such cooling by natural convection cannot sufficiently cool the heat-generating components such as the fan motor 9, so that there is a problem that the temperature inside the electrical equipment chamber cannot be lowered.

In order to solve this problem, the electrical equipment room 1
Although it is conceivable to dispose a cooling fan in 1 to forcibly generate a flow of air to cool the inside of the electrical equipment chamber 11,
In such a case, a space for arranging the cooling fan is required, so that the electric equipment chamber 11 becomes large, which not only makes the main body 1 large but also makes wiring and the like complicated. Problems will arise.

Therefore, the present invention has been made in order to solve such a problem, and provides an indoor unit of an air conditioner capable of cooling an electric equipment room without using special parts. The purpose is.

[0010]

According to the invention of claim 1, inside the main body, a suction port for sucking indoor air, a heat exchanger for heating / cooling the sucked indoor air, and heated / cooled air are provided. And a heat exchange chamber having a cross-flow fan for blowing heated / cooled air from the outlet, and a partition formed on one side of the main body adjacent to the heat exchange chamber. And an extended fan portion formed in the cross flow fan so as to extend from the heat exchange chamber to enter the electrical equipment chamber, and the cross flow fan rotates together with the extended fan portion. A propeller fan section is provided for guiding air in a portion located inside the flow fan inside the electrical equipment chamber to a portion located inside the cross flow fan located inside the heat exchange chamber.

According to a second aspect of the present invention, inside the main body, a suction port for sucking indoor air and heating the sucked indoor air are provided.
A heat exchanger having a heat exchanger for cooling, a blowout port for blowing heated / cooled air into the room, and a crossflow fan for blowing heated / cooled air from the blowout port; An extension fan part is formed on one side of the cross flow fan, which is divided into an electrical equipment chamber formed adjacent to the heat exchange chamber and partitioned so as to extend from the heat exchange chamber into the electrical equipment chamber. And is arranged at a position corresponding to a partition between the heat exchange chamber and the electrical equipment chamber, and rotates together with the extension fan unit, so that air in a portion located inside the electrical equipment chamber inside the crossflow fan is crossflowed. A propeller fan unit for guiding to a portion located inside the fan in the heat exchange chamber is provided, while the propeller fan unit is arranged so as to partially enter the extended fan unit of the crossflow fan. It is provided with a fan motor for rotationally driven.

According to a third aspect of the present invention, the inside of the main body is heated by a suction port for sucking indoor air and heating the sucked indoor air.
A heat exchanger having a heat exchanger for cooling, a blowout port for blowing heated / cooled air into the room, and a crossflow fan for blowing heated / cooled air from the blowout port; An extension fan part is formed on one side of the cross flow fan, which is divided into an electrical equipment chamber formed adjacent to the heat exchange chamber and partitioned so as to extend from the heat exchange chamber into the electrical equipment chamber. And is arranged at a position corresponding to a partition between the heat exchange chamber and the electrical equipment chamber, and rotates together with the extension fan unit, so that air in a portion located inside the electrical equipment chamber inside the crossflow fan is crossflowed. A propeller fan unit for guiding to a portion located inside the fan in the heat exchange chamber is provided, while the propeller fan unit is arranged so as to partially enter the extended fan unit of the crossflow fan. The fan motor for rotationally driven provided, further wherein the cross-flow fan are those the extending fan unit is provided in the heat exchange chamber so as to be positioned substantially at the center of the electrical interior space.

[0013]

According to the first aspect of the invention, the air in the room is sucked in by the crossflow fan provided in the heat exchange chamber formed inside the main body and is heated / heated by the heat exchanger.
The cooled air is blown out from the air outlet. Further, the main body is divided into a heat exchange chamber and an electrical equipment chamber formed on one side of the main body so as to be adjacent to the heat exchange chamber and partitioned. further,
The crossflow fan is extended so as to enter the electrical equipment room from the heat exchange room to form an extended fan section, and a propeller fan section that rotates together with the extended fan section is provided. The air in the portion located in the electrical equipment chamber is guided to the portion located in the heat exchange chamber inside the cross flow fan.

According to the second aspect of the present invention, a cross flow fan provided in the heat exchange chamber formed inside the main body sucks the air in the room from the suction port, and at the same time, the air after being heated / cooled by the heat exchanger is sucked in. Make it blow out from the outlet. Further, the main body is divided into a heat exchange chamber and an electrical equipment chamber formed on one side of the main body so as to be adjacent to the heat exchange chamber and partitioned. Furthermore, the crossflow fan is extended to form an extension fan part so as to enter the heat exchange chamber into the electrical equipment room, and at the position corresponding to the partition between the heat exchange chamber and the electrical equipment room inside the crossflow fan. A propeller fan unit that rotates together with the outlet fan unit is provided, and by this propeller fan unit, the air in the portion located in the electrical equipment chamber inside the crossflow fan is guided to the portion located in the heat exchange chamber inside the crossflow fan. . Further, by arranging the fan motor for rotating the crossflow fan so that a part of the fan motor enters the extended fan portion, the fan motor can be cooled by the air sucked into the heat exchange chamber side. To

According to the third aspect of the invention, the cross-flow fan provided in the heat exchange chamber formed inside the main body sucks the indoor air from the suction port, and the air after being heated / cooled by the heat exchanger is drawn. Make it blow out from the outlet. Further, the main body is divided into a heat exchange chamber and an electrical equipment chamber formed on one side of the main body so as to be adjacent to the heat exchange chamber and partitioned. Furthermore, the crossflow fan is extended to form an extension fan part so as to enter the heat exchange chamber into the electrical equipment room, and at the position corresponding to the partition between the heat exchange chamber and the electrical equipment room inside the crossflow fan. A propeller fan unit that rotates together with the outlet fan unit is provided, and by this propeller fan unit, the air in the portion located in the electrical equipment chamber inside the crossflow fan is guided to the portion located in the heat exchange chamber inside the crossflow fan. . Further, by arranging the fan motor for rotating the crossflow fan so that a part of the fan motor enters the extended fan portion, the fan motor can be cooled by the air sucked into the heat exchange chamber side. To Further, the crossflow fan is provided in the heat exchange chamber so that the extended fan portion is located in the substantially central portion of the electrical equipment room space, so that the electrical component can be arranged around the extended fan portion.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view of a main part of an indoor unit of an air conditioner which is an example of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA of a fan of this indoor unit. Figure 1
2, the same reference numerals as those in FIGS. 3, 4 and 5 indicate the same or corresponding portions.

In FIG. 1, reference numeral 13 is a cross flow fan, which is disposed in the heat exchange chamber 5 and is extended so that one end thereof is inserted into the electrical equipment chamber 11. Reference numeral 14 denotes a portion of the crossflow fan 13 located in the heat exchange chamber 5 (hereinafter referred to as a main body portion), and 15 denotes an electric equipment chamber 11
The extended fan part extended inward is shown.

By the way, this cross flow fan 13
2 is an elongated cylindrical fan formed by arranging a number of elongated blades 16 in a circumferential shape at regular intervals as shown in FIG. 2, and when rotated, air is generated from between the blades 16 as shown in FIG. After being sucked into the hollow portion 13a inside,
It is designed to be blown out from between the blades 16.

Here, the shape of the air passage R in which the main body portion 14 of the cross flow fan 13 is disposed is the main body portion 1
4 is formed so that the upper side is wider than the lower side (see FIG. 4), and when the crossflow fan 13 rotates, the air after heat exchange above the main body portion 14 is sucked in and blown out downward. It is supposed to be done.

On the other hand, at the position corresponding to the partition plate 12 which is the partition between the heat exchange chamber 5 and the electrical equipment chamber 11 inside the cross flow fan 13, that is, at the boundary between the main body portion 14 and the extended fan portion 15. Is a propeller fan unit 17 as shown in FIG.
Is provided. Here, this propeller fan unit 17
When the crossflow fan 13 rotates, it rotates together with the extension fan unit 15 and is located in the electrical equipment chamber 11 inside the crossflow fan 13, that is, the extension fan unit 15
The air inside is exchanged with the heat exchange chamber 5 inside the cross flow fan 13.
For guiding to the portion located at, that is, the main body portion 14.

By guiding the air in the extension fan section 15 to the main body section 14 by the extension fan section 15 and the propeller fan section 17, the air in the electrical equipment room 11 is forcibly forced to the heat exchange chamber 5 side. Therefore, the inside of the electrical equipment chamber 11 can be cooled without using special parts such as a cooling fan.

The electrical equipment chamber 11 is guided to the heat exchange chamber 5 side.
The air inside will be blown out into the room together with the air heated / cooled by the main body portion 14.
Since 5 is shorter than the main body portion 14, the amount of air in the electrical equipment chamber 11 toward the heat exchange chamber 5 side is also small, and therefore the electrical equipment chamber 1
Even if the air in 1 is blown out into the room together with the air after heat exchange, the temperature of the air does not rise or fall.

By the way, since the extension fan portion 15 cooperates with the propeller fan portion 17 to guide the air in the electrical equipment chamber 11 toward the heat exchange chamber 5, the extension fan portion 15 has a peripheral surface. The air in the electrical equipment room 11 can be sucked in from all directions.

Therefore, in the present embodiment, the cross flow fan 13 is provided in the heat exchange chamber 5 so that the extension fan portion 15 is located substantially in the central portion of the electrical equipment interior space, which biases the electrical equipment components. Without fan section 1
The electrical components can be arranged around 5, and the electrical components in the electrical component chamber 11 can be cooled more efficiently. Furthermore, when the extension fan unit 15 is located in the substantially central portion of the electrical equipment interior space, the extension fan unit 15
Since the distance between the air vent 11a and the vent hole 11a is shortened and the suction speed is increased, the electric component in the electric component chamber 11 can be cooled more efficiently.

Further, in this embodiment, a part of the fan motor 9 which is a heat generating component is arranged so as to be inserted into the hollow portion of the extended fan portion 15. Then, by causing a part of the fan motor 9 to enter the extended fan portion 15 in this manner, the air toward the heat exchange chamber 5 side comes into contact with the fan motor 9, so that the fan motor 9 is cooled more reliably. Will be done. When the fan motor 9 is cooled in this way, the chassis 9b to which the fan motor 9 is fixed is also cooled next, so that the temperature inside the electrical equipment chamber 11 is further lowered.

Further, by inserting a part of the fan motor 9 into the extended fan portion 15 in this way, the side surface of the extended fan portion 15 on the side of the electrical equipment chamber 11 can be closed by the casing of the fan motor 9. The cost is reduced because the material for closing the side surface of the electrical equipment chamber 11 side is unnecessary. Also,
Since a part of the fan motor 9 is inserted into the extension fan unit 15, the width of the electrical equipment chamber 11 can be made smaller than that in the case where the fan motor 9 is arranged on the side of the extension fan unit 15. The width of the main body 1 can be reduced.

Next, the cooling operation of the electrical equipment room in the indoor unit of the air conditioner thus configured will be described.

When the cross-flow fan 13 rotates, the air after heat exchange in the upper part is sucked in and blown out in the lower part in the main body part 14, while the extending fan part 15 in the extending fan part 15 as shown in FIG. Rotation of part 15 causes electrical equipment room 1
The air inside 1 is sucked into the hollow portion of the extension fan unit 15 and is guided to the heat exchange chamber 5 side by the propeller fan unit 17. Then, when the air in the electrical equipment chamber 11 is guided to the heat exchange chamber 5 side in this way, the air in the electrical equipment chamber 11 is forced to move toward the heat exchange chamber 5 side, so the interior of the electrical equipment chamber 11 is cooled. It

Further, when the air in the electrical equipment chamber 11 is sucked into the heat exchange chamber 5 side in this way, a part of this air is incorporated into the hollow portion of the extended fan portion 15 so that the fan motor is incorporated. Since it comes into contact with the fan motor 9, the fan motor 9 is cooled more reliably. Further, when the fan motor 9 is cooled in this way, the chassis 9b to which the fan motor 9 is fixed next is also cooled, so that the temperature inside the electrical equipment chamber 11 is further lowered.

As described above, by providing the extension fan portion 15 and the propeller fan portion 17 in the cross flow fan 13, if the cross flow fan is rotated, the electrical equipment chamber 11
The air inside can be guided to the heat exchange chamber 5 side, and
The inside can be cooled.

[0032]

As described above, according to the invention of claim 1,
Since the air in the electrical equipment chamber can be guided to the heat exchange chamber side by the extension fan portion and the propeller fan portion formed in the cross flow fan, the electrical equipment chamber can be cooled without using special parts. By cooling the electrical equipment room in this way, the life of the fan motor and electrical equipment parts can be extended, and the reliability of the indoor unit can be improved.

Further, in the invention of claim 2, since the air in the electrical equipment chamber can be guided to the heat exchange chamber side by the extension fan portion and the propeller fan portion formed in the cross flow fan, no special parts are used. Both can cool the electrical equipment room. Further, by arranging the fan motor so that a part of the fan motor can enter the inside of the extended fan portion, the fan motor can be cooled by the air sucked into the heat exchange chamber side, thereby extending the life of the fan motor. In addition, the temperature rise of the fan motor can be suppressed, and the fan motor can be further downsized.

In the third aspect of the invention, since the air in the electrical equipment chamber can be guided to the heat exchange chamber side by the extended fan portion and the propeller fan portion formed in the cross flow fan, no special parts are used. The electrical equipment room can be cooled. Further, by arranging the fan motor so that a part of the fan motor can enter the inside of the extended fan portion, the fan motor can be cooled by the air sucked into the heat exchange chamber side, thereby extending the life of the fan motor. In addition, the temperature rise of the fan motor can be suppressed, and the fan motor can be further downsized. Further, by providing the cross flow fan in the heat exchange chamber so that the extension fan portion is located in the substantially central portion of the electrical equipment interior space, it is possible to dispose electrical components around the extension fan portion, and to improve the efficiency of electrical equipment. The parts can be cooled.

[0035]

[Brief description of drawings]

FIG. 1 is a side sectional view of a main part of an indoor unit of an air conditioner, which is an example of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a conventional air conditioner.

FIG. 4 is a side sectional view of a conventional air conditioner indoor unit.

FIG. 5 is a side sectional view of a main part of an indoor unit of a conventional air conditioner.

[Explanation of symbols]

 1 Indoor unit main body 2 Suction port 3 Evaporator 4 Outlet port 5 Heat exchange chamber 6,13 Cross flow fan 9 Fan motor 11 Electrical equipment room 15 Extending fan part 17 Propeller fan part

Claims (3)

[Claims] 1. Inside the main body, a suction port for sucking indoor air, a heat exchanger for heating / cooling the sucked indoor air, and an outlet for blowing the heated / cooled air into the room.
It is divided into a heat exchange chamber having a cross-flow fan for blowing heated / cooled air from the air outlet, and an electrical equipment chamber formed on one side of the main body adjacent to the heat exchange chamber to form a partition. An extension fan part formed in the crossflow fan so as to extend from the heat exchange chamber to enter the electrical equipment chamber; and the electrical fan chamber inside the crossflow fan, which rotates together with the extension fan part. And a propeller fan section for guiding the air in the portion located in the crossflow fan to the portion located in the heat exchange chamber inside the crossflow fan. 2. Inside the main body, a suction port for sucking indoor air, a heat exchanger for heating / cooling the sucked indoor air, and an outlet for blowing the heated / cooled air into the room.
It is divided into a heat exchange chamber having a cross-flow fan for blowing heated / cooled air from the air outlet, and an electrical equipment chamber formed on one side of the main body adjacent to the heat exchange chamber to form a partition. The cross flow fan has an extended fan portion formed to extend from the heat exchange chamber to enter the electrical equipment chamber, and a position corresponding to a partition between the heat exchange chamber and the electrical equipment chamber. A propeller fan unit that rotates together with the extension fan unit and guides air in a portion located in the electrical equipment chamber inside the crossflow fan to a portion located in the heat exchange chamber inside the crossflow fan is provided. A room for an air conditioner, which is provided with a fan motor that is arranged so as to partly enter the extended fan portion of the crossflow fan and that rotationally drives the crossflow fan. Inside machine. 3. Inside the main body, a suction port for sucking indoor air, a heat exchanger for heating / cooling the sucked indoor air, and an outlet for blowing the heated / cooled air into the room.
It is divided into a heat exchange chamber having a cross-flow fan for blowing heated / cooled air from the air outlet, and an electrical equipment chamber formed on one side of the main body adjacent to the heat exchange chamber to form a partition. The cross flow fan has an extended fan portion formed to extend from the heat exchange chamber to enter the electrical equipment chamber, and a position corresponding to a partition between the heat exchange chamber and the electrical equipment chamber. A propeller fan unit that rotates together with the extension fan unit and guides air in a portion located in the electrical equipment chamber inside the crossflow fan to a portion located in the heat exchange chamber inside the crossflow fan is provided. And a fan motor that is arranged so that a part thereof is inserted into the extended fan portion of the crossflow fan and that rotationally drives the crossflow fan. An indoor unit for an air conditioner, wherein the extension fan unit is provided in the heat exchange chamber so as to be located substantially in the center of the electrical equipment interior space.