JPH07104008B2 - Air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner which can blow cold air and hot air.

[0002]

2. Description of the Related Art Conventionally, as this type of air conditioner, first and second openings are formed on the front surface of the main body, and when blowing cold air, the blower fan is normally rotated so that air taken in from the first opening portion of the main body is taken in. The air is cooled by the heat exchanger and blown from the second opening, and at the time of blowing hot air, the blower fan is reversed and the air taken in from the second opening is heated by the heat exchanger and blown from the first opening. This is known (Actual Kosho 5
6-39936).

However, it is necessary to form the first opening and the second opening on the front surface of the main body, and there is a drawback that the main body becomes large.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and provides an air conditioner which can share a cold air outlet and a cold air outlet and can be downsized. Is an issue.

[0005]

The present invention comprises a heat exchanger,
A blower fan, an electric motor that rotates the blower fan in a forward and reverse direction, and a fan casing that surrounds the blower fan and has an intake port and an exhaust port are housed in the main body, and the exhaust port of the fan casing is installed. In an air conditioner that communicates with the air outlet formed in the main unit, the fan casing has a forward transfer air path that guides air from the intake port to the exhaust port when the blower fan rotates forward, and air flows from the intake port to the exhaust port when the blower fan reverses. Is formed, and a heater is arranged in the reverse transfer air passage.

[0006]

When the blower fan is rotated in the forward direction, it is blown through the forward transfer air passage of the fan casing, and the cool air cooled by the heat exchanger is blown from the outlet. Also, when the blower fan is reversed,
The reverse transfer air passage is blown, heated by the heater, and warm air is blown from the blowout port.

Since the guide portion which guides the blown air to the heater in a substantially uniform manner is formed in the reverse transfer air passage, the blown air can be efficiently turned into warm air and the heating efficiency is improved.

Further, since the shielding means for selectively shielding the forward transfer air passage and the reverse transfer air passage is formed, the cool air passing through the forward transfer air passage is mixed with the warm air passing through the reverse transfer air passage when the warm air is blown. There is no inconvenience that the temperature of the warm air is lowered by being blown from the outlet.

[0009]

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

Reference numeral 1 denotes a main body, the inside of which is divided into upper and lower parts by a partition plate 2, and an upper space is an indoor air conditioning chamber 3 and a lower space is an outdoor air conditioning chamber 4. Reference numeral 5 denotes an electric motor fixed to the partition plate 2 and capable of rotating in the forward and reverse directions, the rotary shafts of which extend in both air conditioning chambers 3 and 4.

Reference numeral 6 denotes an air outlet formed on the front surface of the main body 1,
Reference numeral 7 denotes a suction port formed on the upper portion of the left side surface of the main body 1, and the blow-out port 6 and the suction port 7 communicate with the indoor air conditioning chamber.
Reference numeral 8 denotes an indoor heat exchanger mounted in the indoor air conditioning chamber 3 so as to face the suction port 7, and 9 denotes a motor 5 mounted in the indoor air conditioning chamber 3. It is an indoor blower fan made of a suction type sirocco fan, and the electric motor 5 and the indoor blower fan 9 constitute an indoor blower. The indoor blower fan 9 blows a large amount of air when the electric motor 3 is normally rotated. Is configured.

Reference numeral 10 denotes an indoor fan casing which surrounds the indoor blower fan 9 and has an intake port 11 formed on the upper and lower surfaces thereof, and an exhaust port 12 communicating with the air outlet 6 of the main body 1. The fan casing 10 is formed with a forward transfer air passage 13 that guides the air blow to the exhaust port 12 when the air blower fan 9 rotates normally and a reverse transfer air passage 14 that guides the air blow to the exhaust air outlet 12 when the air blow fan 9 reversely rotates. The forward transfer air passage 13 and the reverse transfer air passage 14 are partitioned by a tongue portion 15 having a substantially triangular shape. The tongue portion 15 is formed in the vicinity of the blower fan 9 so as to prevent the blown air generated by the rotation of the blower fan 9 from circulating in the fan casing 10 and efficiently guide it to the exhaust port 12. There is.

Reference numeral 16 is a reverse transfer air passage of the fan casing 10.
The ceramic heater disposed at 14 is disposed at a right angle to the air flow flowing in the reverse transfer air passage 14 to reduce the resistance to the air flow as much as possible. Reference numeral 17 denotes a guide portion formed in the reverse transfer air passage 14 of the fan casing 10, which is a fan casing.
Sing 10 The wind that flows along the side wall is the ceramic heater.
It is formed so as to guide the entire surface of 16 so as to pass substantially uniformly.

Reference numeral 18 denotes a shutter which is rotatably formed in the vicinity of the tongue portion 15 and serves as a shielding means. The shutter 18 is rotated by blowing air passing through the forward transfer air passage 13 and the reverse transfer air passage 14, and the forward transfer air passage is provided.
13 and the reverse transfer air passage 14 are selectively shielded. The lower end of the support shaft of the shutter 18 is a fan casing 10
Through the spring pressing member 19 to prevent the spring pressing member 19 from rotating.
Reference numeral 19 supports the other end of a spring body 20, one end of which is supported by the fan casing 10, and the spring pressing member 19 and the spring body 20 prevent the shutter 18 from fluttering.

Reference numeral 21 denotes a vertical direction changing blade for changing the air blowing direction from the air outlet 4 of the main body 1 to a vertical direction, and 22 is a horizontal direction changing blade for changing the air blowing direction from the air outlet 4 to the horizontal direction.

Reference numeral 23 denotes a discharge port formed on the back surface of the main body 1,
Reference numeral 24 denotes a suction port formed on the back surface of the main body 1, and the discharge port 23 and the suction port 24 communicate with the outdoor air conditioning chamber 4.

The reference numeral 25 designates an outdoor air blower fan which is mounted on the rotary shaft of the electric motor 5 and is arranged in the outdoor air conditioning chamber 4 and is composed of a single suction type sirocco fan and blows a large amount of air when the electric motor 5 rotates forward. As described above, the electric motor 5 and the outdoor fan 25 constitute an outdoor fan.

An outdoor fan casing 26 surrounds the outdoor blower fan 25 and has an intake port 27 formed on the lower surface thereof, and an exhaust port 28 communicates with an exhaust port 23 of the main body 1. Reference numeral 29 denotes an opening formed on the side of the outdoor fan casing 26 that faces the exhaust port 28. The air in the outdoor air conditioning chamber 4 sucked from the intake port 27 when the outdoor blower fan 25 is rotated in the reverse direction. Aperture
It is designed to circulate from 29 to the outdoor air conditioning chamber 4. Reference numeral 30 denotes a bulging portion projecting toward the blower fan 25 in the vicinity of the exhaust port 28 of the outdoor side fan casing 26.When the blower fan 25 is reversed, the blower portion 30 blows air from the blower fan 25. The air is guided to the 29 side to prevent the blown air from being exhausted from the exhaust port 23 via the exhaust port 28.

Reference numeral 31 is an outdoor heat exchanger disposed in the outdoor air conditioning chamber 4, and is mounted so as to face the intake port 27 of the outdoor fan casing 26. Reference numeral 32 is a compressor mounted on the bottom surface of the main body 1 and arranged in the outdoor air conditioning chamber 4, and supplies a refrigerant to the indoor heat exchanger 8 and the outdoor heat exchanger 31. Reference numeral 33 denotes a water tank that is detachably mounted in the outdoor air conditioning chamber 4 and stores drain water generated in the indoor heat exchanger 8.

Reference numeral 34 denotes a switch panel formed on the front surface of the main body 1 for driving the compressor 32 and for rotating the electric motor 5 in the normal direction and for rotating the electric motor 5 in the normal direction to rotate the electric motor 5 in the normal direction. Blower switch that blows indoor air from the blower outlet 6, the electric motor 5 is reversed, and the ceramic heater
It has a warm air switch, etc., which energizes 16 and blows warm air from the air outlet 6.

The driving operation will be described below. First, the cold air operation will be described. When the cold air switch on the switch panel 34 is operated, the compressor 32 is driven and the electric motor 5 is normally rotated.

On the indoor air conditioning chamber 3 side, the indoor air blower fan 9 is normally rotated by the normal rotation of the electric motor 5, and the indoor air sucked from the suction port 7 of the main body 1 by the rotational driving of the indoor air blower fan 9 is rotated. Is cooled by the indoor heat exchanger 8,
The air is blown from the outlet 6 through the forward transfer air passage 13 of the indoor fan casing 10. At this time, indoor fan casing
Since it passes through 10 normal transfer air passages 13, the shutter 18 blocks the reverse transfer air passages 14 by the wind pressure, and prevents the air passing through the reverse transfer air passages 14 from being blown from the outlet 6.

On the other hand, on the outdoor air conditioning chamber 4 side,
When the electric motor 5 rotates in the normal direction, the outdoor blower fan 25 rotates in the normal direction, and by the rotation of the outdoor blower fan 25, the air sucked from the suction port 24 of the main body cools the outdoor heat exchanger 31, and the exhaust port 23 exhausts the air. To be done.

Next, the warm air operation will be described. When the warm air switch of the switch panel 34 is operated, the electric motor 5 rotates in the reverse direction and the ceramic heater 16 is energized.

On the indoor air conditioning chamber 3 side, the indoor blower fan 9 reversely rotates due to the reverse rotation of the electric motor 5, and the main body 1
The air sucked from the suction port 7 passes through the reverse transfer air passage 14 of the indoor fan casing 10, is heated by the ceramic heater 16, becomes warm air, and is blown from the air outlet 6.
At this time, since the shutter 18 blocks the forward transfer air passage 13 by the wind pressure passing through the reverse transfer air passage 14 of the indoor fan casing 10, the temperature of the cool air passing through the forward transfer air passage 13 passing through the reverse transfer air passage 14 is increased. There is no inconvenience that the temperature of the warm air is lowered by being mixed with the wind and being blown from the outlet 6.

Further, since the guide portion 17 is formed in the reverse transfer air passage 14, the ceramic heater 16 is substantially uniformly blown over the entire surface, and the blown air can be efficiently made into warm air, thereby improving heating efficiency. Can be improved. Furthermore, since the ceramic heater 16 is arranged so as to be substantially perpendicular to the air flow passing through the reverse transfer air passage 14, the influence of the ceramic heater 16 on the air flow efficiency can be reduced as much as possible.

On the other hand, on the outdoor air conditioning chamber 4 side,
The outdoor blower fan 25 is reversely rotated by the reverse rotation of the electric motor 5, and the outdoor fan casing is rotated by the rotation of the outdoor blower fan 25.
The air taken in through the intake port 27 of 26 is discharged into the outdoor air conditioning chamber 4 through the opening 29. At this time, a bulge portion 30 is formed in the vicinity of the exhaust port 28 of the outdoor fan casing 26,
With this bulging portion 30, the air (shown by the broken line arrow in FIG. 5) exhausted from the outlet 23 when there is no bulging portion 30 is opened.
Guided to the 25 side, the amount of air discharged from the discharge port 23 is reduced.

As shown in FIGS. 9 to 10, the shutter 18 is constructed such that the shutter 18 is operated by the shape memory alloy 35, and the shape memory alloy 35 contracts during the cold air operation so that the reverse transfer air passage 14 is formed. Shape memory alloy for hot air operation
35 may be extended to block the forward transfer air passage 13.

[0029]

As described above, according to the structure of claim 1 of the present invention, the exhaust port for blowing cold air and the exhaust port for blowing hot air can be shared, and the main body can be downsized. Further, when the warm air is blown, since the blower fan is rotated in the reverse direction, the wind speed is reduced, the heating capacity can be improved, and the reduction of the sensible temperature can be prevented.

According to the second aspect of the invention, the heating capacity can be further improved. Further, according to the configuration of claim 3, it is possible to eliminate the inconvenience that the air passing through the forward transfer air passage is mixed with the warm air sent from the reverse transfer air passage to lower the heating capacity during the hot air operation. You can

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional view of a main part of a room-side blower according to an embodiment of the present invention when cold air is blown.

FIG. 2 is a horizontal cross-sectional view of a main part showing the same hot air blowing.

FIG. 3 is an enlarged perspective view of the relevant part.

FIG. 4 is a vertical sectional view of the same.

FIG. 5 is a cross-sectional view of the main parts of the outdoor fan of the same room.

FIG. 6 is a vertical cross-sectional view of a main part of the outdoor fan.

FIG. 7 is a front perspective view of the same.

FIG. 8 is a rear perspective view of the same.

FIG. 9 is a lateral cross-sectional view of a main part of the indoor blower according to another embodiment of the present invention, showing the time of blowing cool air.

FIG. 10 is a transverse cross-sectional view of a main part showing the same hot air blowing.

[Explanation of symbols]

 1 Main body 5 Electric motor 6 Air outlet 8 Indoor heat exchanger 9 Indoor blower fan 10 Indoor fan casing 11 Intake port 12 Exhaust port 13 Forward transfer air passage 14 Reverse transfer air passage 16 Ceramic heater 17 Guide part 18 Shutter

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshimura Nishimura 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Hidefumi Nomura 2-18 Keiyo Hondori, Moriguchi City, Osaka Sanyo Inside the Electric Co., Ltd. (72) Hirokazu Okada 2-18 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Inside Hirohiro Takami 2-18 Keihan Main Street, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A main body comprising a heat exchanger, a blower fan, a forward / reverse rotatable electric motor for rotationally driving the blower fan, and a fan casing which surrounds the blower fan and has an intake port and an exhaust port. In an air conditioner which is housed inside and communicates with an outlet formed in the main body of an outlet of the fan casing, in the fan casing, forward transfer for guiding air from an inlet to an outlet when the blower fan rotates forward. An air conditioner characterized by forming an air passage and a reverse transfer air passage that guides air from an intake opening to an exhaust opening when a blower fan reverses rotation, and arranging a heater in the reverse transfer air passage. 2. The air conditioner according to claim 1, wherein a guide portion is formed in the reverse transfer air passage to guide the blown air to the heater substantially uniformly. 3. The air conditioner according to claim 1, further comprising a shielding means for selectively shielding the forward transfer air passage and the reverse transfer air passage.