JP2010032068A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately distribute airflow volume of air from two upper and lower outlets and to effectively utilize a space at the back of a housing in an air conditioner comprising a heat exchanger and a pair of upper and lower fans in the housing having inlets, the upper outlet and the lower outlet, exchanging heat of the air flowing into the housing from the inlets by the heat exchanger, and supplying the air from the upper outlet and the lower outlet by the pair of upper and lower fans. <P>SOLUTION: In this air conditioner 1 comprising the heat exchanger 3, and the pair of upper and lower fans 4, 5 in the housing 2 having the inlets 8, 9, the upper outlet 10 and the lower outlet 11, exchanging the heat of air flowing into the housing 2 from the inlets 8, 9, by the heat exchanger, and supplying the air from the upper outlet 10 and the lower outlet 11 by the pair of upper and lower fans 4, 5, diameters of the pair of upper and lower fans 4, 5 are different from each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a heat exchanger and a pair of upper and lower fans in a housing having a suction port, an upper blowout port, and a lower blowout port, and heat exchange of the air flowing into the housing from the suction port by the heat exchanger. It is related with the air conditioner made to blow out from an upper blower outlet and a lower blower outlet.

In this type of conventional air conditioner, by providing a pair of upper and lower fans in the housing, the air that flows into the housing from the suction port and heat-exchanged by the heat exchanger is received from both the upper outlet port and the lower outlet port. A plurality of air currents can be controlled by blowing or blowing from any one of the outlets (see Patent Document 1).
JP-A-61-59145

  However, in the above-described air conditioner, the same fan diameter is used for the pair of upper and lower fans. Therefore, the air exchanged by the heat exchanger is pulled by the pair of upper and lower fans, and the airflow is disturbed. There is a problem that not only the air volume from the outlet is not stable, but also noise due to turbulence in the housing is increased. In addition, by providing two fans in the housing, there is a problem in that the storage space for the refrigerant pipe connecting the indoor unit and the outdoor unit cannot be taken, and the depth of the housing must be increased.

  Therefore, the present invention includes a heat exchanger and a pair of upper and lower fans in a housing having a suction port, an upper blowout port, and a lower blowout port, and heat exchange is performed between the air flowing into the housing from the suction port by the heat exchanger. In an air conditioner that is blown from the upper and lower outlets by a pair of fans, the air volume from the upper and lower two outlets is appropriately distributed, and the space at the rear of the housing is effective The purpose is to be able to utilize it.

  For this reason, the first invention comprises a heat exchanger and a pair of upper and lower fans in a housing having a suction port, an upper blowout port, and a lower blowout port, and heat exchange of the air flowing into the housing from the suction port is performed by the heat exchanger. In the air conditioner that is blown out from the upper blowout port and the lower blowout port by the pair of upper and lower fans, the fan diameters of the pair of upper and lower fans are different.

  According to a second aspect, in the air conditioner of the first aspect, the fan diameter of the upper fan is set larger than the fan diameter of the lower fan.

  According to the present invention, by making the fan diameter of the upper fan larger than the fan diameter of the lower fan, turbulence of the air current exchanged by the heat exchanger can be prevented, and the two upper and lower outlets can be prevented. The air volume of the air can be appropriately distributed to stabilize the air volume, and the generation of noise can be suppressed. In addition, the space behind the fan having a small fan diameter can be effectively used as a storage space for the refrigerant pipe connecting the indoor unit and the outdoor unit.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS. Reference numeral 1 denotes a floor-standing indoor unit that constitutes an air conditioner together with an outdoor unit (not shown) serving as a heat source unit. A heat exchanger 3 and a pair of upper and lower cross flow fans 4 and 5 are provided in a housing 2. ing. The fan diameter (diameter) of the upper crossflow fan 4 is 100 mm, the fan diameter (diameter) of the lower crossflow fan 5 is 92 mm, and the fan diameter of the upper crossflow fan 4 is smaller than the fan diameter of the lower crossflow fan 5. Is also larger.

  The housing 2 is composed of a front panel 6 and a main casing 7. The front panel 6 is provided with a front inlet 8, a side inlet 9, an upper outlet 10, and a lower outlet 11. An upper blowout flap 12 is provided which is sometimes opened. An air filter 14 with an air purifying filter 13 is detachably installed on the front surface of the heat exchanger 3, and a drain pan 15 is provided below the heat exchanger 3.

  A heat insulating material 16 is attached to the rear portion of the main body casing 7, and an air path guide 17 having a square cross section located between the pair of upper and lower cross flow fans 4, 5 and the air path inside the heat insulating material 16. An upper fan case 18 that extends above the guide 17 and covers the upper cross flow fan 4 with a predetermined interval and a lower space that extends below the air guide 17 and covers the lower cross flow fan 5 with a predetermined interval. A lower fan case 19 is disposed.

  Further, an upper outlet passage 20 is formed between the upper cross flow fan 4 and the upper outlet 10, and a lower outlet passage 21 is formed between the lower cross flow fan 5 and the lower outlet 11, The lower outlet passage 21 is provided with a shutter device 22 that can be freely opened and closed.

  The air guide 17 includes a long side portion 17A that extends upward and downward on the upper side, and a short side portion 17B that is bent from the long side portion 17A and extends downward and downward on the lower side. And the top part 17C which is a bending position of the air path guide 17 is made to come to the position shifted below the upper and lower center position, that is, the long side part 17A is longer than the short side part 17B, and the top part 17C is It is located below the center position between the center of the upper cross flow fan 4 and the center of the lower cross flow fan 5, and is below the heat exchanger 3 from the extended line of the long side portion 17A indicated by the alternate long and short dash line. The rear end is positioned to the left (front), and is configured so that the air after heat exchange that has passed through the heat exchanger 3 can be taken in and supplied indoors when only the upper crossflow fan 4 is operated.

  In the indoor unit 1 of the air conditioner configured as described above, the heat exchanger 3 acts as an evaporator during cooling operation, and usually a pair of upper and lower cross flow fans 4 and 5 are operated. Then, indoor air flows into the housing 2 from the front suction port 8 and the side suction port 9 and is removed by the air filter 14 and then cooled by the heat exchanger 3 to become cool air. Then, the airflow is guided to the crossflow fans 4 and 5 by being divided up and down by the air passage guide 17 and passes through the upper outlet passage 20 and the lower outlet passage 21 from the upper outlet 10 and the lower outlet 11 to the room. Be blown out.

  Since the fan diameter of the upper cross flow fan 4 is larger than the fan diameter of the lower cross flow fan 5, the degree of the cold air that has passed through the heat exchanger 3 is pulled by the two cross flow fans 4 and 5 is reduced. Since the upper cross flow fan 4 mainly flows out into the room from the upper outlet 10, a large amount of cool air can be led upward in the room to efficiently cool the room, and the air flow inside the housing 2 is stabilized. Generation of noise can be suppressed. In addition, although the amount of air blown from the lower air outlet 11 by the lower cross flow fan 5 is reduced, by keeping the lower air outlet 11 small, the wind speed can be secured, and the lower air outlet 11 is experienced. It is possible to avoid feeling a decrease in the air volume from.

  Moreover, the top portion 17C of the air passage guide 17 is shifted downward from the center position between the center of the upper cross flow fan 4 and the center of the lower cross flow fan 5, and is shifted downward from the center of the air passage guide 17. Therefore, the cool air from the heat exchanger 3 can be appropriately distributed according to the blown air volume of the upper and lower air outlets 10 and 11, and the cool air that has passed through the heat exchanger 3 can be smoothly flown into the upper crossflow fan 4. it can.

  When the user selects cold air blowing from only the upper air outlet 10, the lower cross flow fan 5 stops and the lower air outlet passage 21 is closed by the shutter device 22 as indicated by the one-dot chain line in FIG. 3. . At this time, since the lower rear end of the heat exchanger 3 is located on the left (front side) with respect to the extended line of the long side portion 17A indicated by the alternate long and short dash line, the cool air is blown into the room only from the upper outlet 10. Even when the air is taken out, the air after passing through the heat exchanger 3 can be taken in and blown out so that the air passes through the entire surface of the heat exchanger 3, and an efficient cooling operation can be performed. The device 22 eliminates cold air leakage from the lower outlet 11 and can perform more effective cooling operation.

  Moreover, the heat exchanger 3 is provided with a refrigerant pipe that connects the indoor unit and the outdoor unit, but the space S behind the cross-flow fan 5 having a small fan diameter is effectively used as a storage space for the refrigerant pipe. Can be used.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various alternatives described above without departing from the spirit of the present invention. It includes modifications or variations.

It is a longitudinal cross-sectional view of an air conditioner. It is a perspective view similarly. It is a principal part expanded sectional view of FIG.

Explanation of symbols

1 Indoor unit (air conditioner)
2 Housing 3 Heat Exchanger 4 Upper Cross Flow Fan 5 Lower Cross Flow Fan 8, 9 Suction Port 10 Upper Outlet Port 11 Lower Outlet Port 17 Airway Guide 17A Long Side 17C Top 22 Shutter Device

Claims (2)

  A heat exchanger and a pair of upper and lower fans are provided in a housing having an inlet, an upper outlet, and a lower outlet, and the air flowing into the housing from the inlet is heat-exchanged by the heat exchanger. An air conditioner that is configured to blow air from a blowout port and a lower blowout port, wherein the pair of upper and lower fans have different fan diameters.   The air conditioner according to claim 1, wherein the fan diameter of the upper fan is set larger than the fan diameter of the lower fan.

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