JP2005083654A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of resolving the cause of failure by preventing the accumulation of the dust and water intruded inside of a ventilating device. <P>SOLUTION: This air conditioner wherein an indoor unit installed in a room and an outdoor unit mounted outside are connected by a refrigerant pipe through a wall hole, comprises a ventilating device having an outdoor fan 20 for ventilation installed outside, a fan case 13B accommodating the outdoor fan 20, and an air supply/exhaust pipe 16 communicated with the fan case 13B for communicating the inside and outside of a house through the wall hole. An outdoor part of the ventilating device is provided with a protection cover 24 for covering the ventilating device, an opening part 26 is formed on a bottom face of the protection cover 24, and the opening part 26 is provided with a plurality of shutter plates 29, 29, 33 smaller than a bottom area of the opening part and mounted alternately at different heights. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner provided with a ventilation device for ventilating room air so as to provide a more comfortable indoor environment.

  Today, an indoor unit of a separation type air conditioner is arranged on an indoor wall, indoor air is sucked into the indoor unit by a circulation fan inside the indoor unit, and heat generated by the heat exchanger inside the indoor unit is exchanged. It is extremely common to supply warm air into the room and maintain the room in a comfortable temperature environment. However, in order to improve the cooling and heating effects, the air conditioning is performed without much room ventilation. Therefore, if the room is in a hermetically sealed state for a long time, the room air becomes dirty. Therefore, it is necessary to open the room regularly to release the room air and to ventilate the outside air.

For this reason, what has been conventionally provided with a ventilator in an air conditioner has been proposed. For example, a building hole is formed on the wall of a building, where a space between the indoor unit and the outdoor unit of the air conditioner passes through and a piping hole having a ventilation passage, and an outdoor fan for ventilation and a fan motor for driving the ventilation fan are installed outdoors. In addition, a ventilation device provided in the vicinity of the outlet of the ventilation passage (see, for example, Patent Document 1), a space through which a pipe between an indoor unit and an outdoor unit of an air conditioner passes through a building wall, and for exhaust and air supply A blower in which a piping hole having a ventilation passage is formed and one of the sirocco fans provided on the left and right shafts of the fan motor is accommodated in the exhaust ventilation passage and the other sirocco fan is accommodated in the supply ventilation passage. An internal ventilation unit is installed in the vicinity of the indoor unit, and one of the sirocco fans rotates to exhaust the indoor air from the exhaust ventilation passage to the outside. At the same time, the other sirocco fan rotates to supply outside air from the air supply ventilation passage. Ventilator forms to perform ventilation incorporating the inner (e.g., see Patent Document 2).
Japanese Patent Laid-Open No. 2001-27433 Japanese Patent No. 2629665

  However, in the ventilation device as described above, dust enters easily together with the air taken in from the air intake port of the ventilation passage, so that dust tends to accumulate inside the ventilation passage. In addition, moisture may enter from the outdoor side of the ventilator and accumulate inside, leading to the generation of mold. For this reason, there was a possibility of causing the failure of the ventilator.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner in which dust and water entering the inside of a ventilator are less likely to accumulate and the cause of failure is eliminated.

  In order to solve the above-mentioned problem, an invention according to claim 1 is an air conditioner in which an indoor unit installed indoors and an outdoor unit installed outdoors are connected by a refrigerant pipe through a wall hole. A ventilator having an outdoor fan for ventilation installed outdoors, a fan case for storing the outdoor fan, and a supply / exhaust passage communicating with the fan case and the interior and exterior of the house through the wall hole, A protective cover that covers the ventilator is provided on the outdoor portion of the ventilator, and an opening is provided on the bottom surface of the protective cover, and a plurality of shutter plates smaller than the bottom area of the opening are alternately arranged in the opening. And, it is provided in steps.

  According to a second aspect of the present invention, in the air conditioner according to the first aspect, the opening is provided with a filter that prevents intrusion of dust and foreign matters in the outside air.

  According to a third aspect of the present invention, in the air conditioner according to the first or second aspect, a refrigerant pipe connecting the indoor unit and the outdoor unit is passed through the protective cover.

  According to the present invention, a protective cover that covers the outdoor portion is provided on the outdoor portion of the ventilator having an outdoor fan for ventilation, and a plurality of shutter plates are provided alternately and in steps on the bottom surface of the protective cover. As a result, moisture and dust that have entered from the upper part of the protective cover are dropped and discharged from the gap of the shutter. Further, since the shutter plate and the filter are provided on the bottom surface portion, rainwater and dust entering from the bottom surface portion are prevented by the shutter plate and the filter, so that accumulation of moisture and dust can be prevented inside the protective cover.

  In addition, the refrigerant pipe connecting the indoor unit and the outdoor unit is passed through the protective cover, and the outdoor portion of the ventilator and the refrigerant pipe are arranged and arranged in the protective cover, so that the appearance of the wall surface of the building is improved. be able to.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an air conditioner shown with a part omitted (side surfaces of an indoor unit, a wall of a building, and an outer cover of a ventilation device), and FIG. 2 is a perspective view in which the outer cover is attached to a protective cover. Is a longitudinal sectional view of FIG. 2, and FIG. 4 is a partially enlarged view of FIG.

  In FIG. 1, an indoor unit 1 has a main body case 5 including a front case 3 having a suction panel 2 and a rear case 4 on the back side, and a blower outlet (not shown) is provided at the lower end of the main body case 5. ) And a heat exchanger 6 for heating / cooling indoor air is disposed in the main body case 5. The heat exchanger 6 functions as a cooler during the cooling / dehumidifying operation and functions as a heater during the heating operation by allowing the refrigerant to pass through the refrigerant tube 7 arranged perpendicularly to the fins and meandering. .

  A circulation fan 8 is provided inside the main body case 5 so as to be surrounded by the heat exchanger 6, and indoor air is sucked from the suction panel 2 by the circulation fan 8 and heated / cooled by the heat exchanger 6. Thus, the cool air / warm air is blown out again from the outlet and circulated. In addition to this, a drain pan 9 provided at the lower end of the heat exchanger 6 for storing and discharging dripped drain water, or an air filter (not shown) disposed between the heat exchanger 6 and the suction panel 2. ) And components such as a wind direction device (not shown) for changing the blowing direction provided at the outlet. Further, an electrical component 11 for performing operation control of the compressor of the outdoor unit (not shown) and drive control of the fan motor of the circulation fan 8 is partitioned and incorporated in one side portion of the main body case 5. Yes.

  The indoor unit 1 and the outdoor unit are connected by a refrigerant pipe 18, and a refrigerant pipe 18 connects between a refrigerant compressor, an outdoor heat exchanger and a decompressor provided in the outdoor unit, and the heat exchanger 6 of the indoor unit 1. A refrigeration cycle in which the refrigerant circulates through is formed. The refrigerant pipe 18 is connected to the heat exchanger 6 and piped from the right part of the main body case 5 to the outside through a wall hole provided at the rear. Further, at the place where the refrigerant pipe 18 is piped, a drain hose connected to the drain pan 9 for discharging the drain water to the outside, a power cord for operating the circulation fan 8, a wind direction device, etc., the temperature of the refrigerant A transmission line of a control system for controlling the operation of the refrigerant compressor by detecting the pressure or the room temperature or the like is housed in a protective tube (not shown) and wired together.

  During the air conditioning operation, the refrigerant compressor of the outdoor unit and the circulation fan 8 of the indoor unit 1 are operated, and the rotation of the circulation fan 8 causes the indoor air to be sucked into the indoor unit 1 from the suction panel 2 and exchanges heat with the heat exchanger 6. Then, cold air / warm air is blown into the room from the lower outlet, and air conditioning for cooling / heating is performed.

  Next, the ventilation device will be described. The ventilator is provided with an indoor fan for exhaust inside the indoor unit 1 and an outdoor fan for supplying air outside, and air is supplied or exhausted through a common air supply / exhaust pipe by either drive. It is something to be made.

  Reference numeral 12 denotes an indoor fan for exhausting and ventilating indoor air to the outside (outdoor), and is housed in the indoor unit 1. Specifically, for example, it is arranged near the side surface of the heat exchanger 6. A sirocco fan is used as the indoor fan 12. The sirocco fan and the drive motor for the indoor fan 12 are housed in a thin, substantially cylindrical indoor fan case 13A. When the sirocco fan rotates, room air is sucked in from a circular suction port 14A opened on one side of the indoor fan case 13A, and then blown out from a blowing portion 15a provided at one end of the indoor fan case 13A.

  On the other hand, 20 is an outdoor fan for supplying outdoor air into the room for ventilation, and is provided at a position facing an outdoor wall hole. That is, it arrange | positions on the outdoor side of the indoor wall (not shown) to which the indoor unit 1 is attached. A sirocco fan is also used for the outdoor fan 20, and when the sirocco fan rotates, as in the previous indoor fan 12, outdoor air is sucked from the circular suction port 14B opened on one side of the outdoor fan case 13B. After that, the air is blown out from the blowing portion 15b provided at one end of the outdoor fan case 13B.

  Reference numeral 16 denotes a common air supply / exhaust pipe provided to exhaust indoor air sucked by the indoor fan 12 to the outside and supply outdoor air sucked by the outdoor fan 20 to the room. It is arranged so that it exists and exists inside and outside the house. The supply / exhaust pipe 16 forms a supply / exhaust path that communicates the inside and outside of the house. The indoor fan case 13 </ b> A and the outdoor fan case 13 </ b> B are provided at both ends thereof so as to be connected via the single common supply / exhaust pipe 16. That is, the indoor fan case 13A is installed so as to be connected to the indoor side open end 17a of the air supply / exhaust pipe 16, and the outdoor fan case 13B is provided so as to be connected to the outdoor side open end 17b of the pipe 16. The outdoor fan case 13 </ b> B is attached to the outdoor opening end 17 b of the air supply / exhaust pipe 16 in a hanging manner, with the blowout portion 15 being connected thereto.

  The air supply / exhaust pipe 16 extends from the left side of the indoor unit 1 to the back, and then extends horizontally along the back side of the indoor unit 1 toward the side opposite to the outlet, and bends at a right angle at the tip. It is extended to the outdoors.

  Either the indoor fan 12 or the outdoor fan 20 is driven, and is not driven simultaneously. Therefore, when the indoor fan 12 is driven alone, the indoor fan 12 sucks indoor air from the suction port 14A, and exhausts the air through the air supply / exhaust pipe 16 to the outside using the suction port 14B of the outdoor fan 20 as a blowing portion. Ventilation is done. On the other hand, when the outdoor fan 20 is driven alone, outdoor air is sucked from the suction port 14B by the outdoor fan 20 and blown into the room through the air supply / exhaust pipe 16 using the suction port 14A of the indoor fan 12 as a blowing portion. Ventilation is performed. Thus, the indoor fan case 13 </ b> A, the outdoor fan case 13 </ b> B, and the single common air supply / exhaust pipe 16 provided by connecting both ends constitute a ventilation device.

  Further, a portion of the ventilator exposed to the outside is covered with a rectangular box-shaped protective cover 24 for protection. A mounting portion (not shown) for the outdoor fan case 13B is provided inside the protective cover 24. FIG. 1 shows the protective cover with the outer cover removed, and FIG. 2 shows the protective cover attached.

  As shown in FIG. 3, a rectangular tube-shaped ventilation opening 26 is provided at the lower portion of the protective cover 24, and a filter 27 and a shutter 28 are disposed in the opening 26. The filter 27 is formed of a synthetic resin in a lattice shape, and has a plurality of slit-shaped air holes, and serves to prevent dust and foreign matters in the outside air that is sucked from entering the inside.

  The shutter 28 is disposed below the filter 27 and has a plurality of horizontal shutter plates 29, 29,... Smaller than the cross-sectional area of the opening 26 as shown in FIG. The shutter plate 29 has three upper and lower stages, and three shutter plates 29, 29... Extend from the front wall 31 of the opening 26 to the vicinity of the rear rear wall 32 between the shutter plates 29. It is arranged with a gap left and right. The middle stage extends from the front wall 31 to the vicinity of the rear rear wall 32 so as to cover the left and right gaps of the upper shutter plates 29, 29,..., And the four shutter plates 29, 29,. The plate 29 is in contact with the left and right walls and is disposed with a gap left and right between the shutter plates 29. The lower stage is provided with a single shutter plate 33 extending forward from the rear wall 32 and before and behind the upper and middle shutter plates 29 so as to cover the gaps at the tips of the upper and middle shutter plates 29, 29,. Is arranged. The plurality of shutter plates 29, 29,..., 33 are arranged so as to cover the entire cross section of the opening 26 when the opening 26 is viewed from below.

  In this way, the plurality of shutter plates 29, 29,..., 33 smaller than the bottom area are provided in the opening 26 alternately and in steps, thereby protecting the outdoor fan 20 of the ventilator from rain wind and dust, and mischief. The dust and moisture that have entered the protective cover 24 are discharged downward so as not to accumulate inside. Further, since the outdoor fan 20 is hidden by the protective cover 24 and not exposed, the appearance can be improved.

  The protective cover 24 is provided with a space (see FIG. 3) through which the refrigerant pipe 18 is vertically inserted. The inside of the protective cover 24 is arranged so that the refrigerant pipe 18 passes through the space. By securing the place through which the refrigerant pipe 18 passes, the piping work can be facilitated and the appearance of the refrigerant pipe 18 and the wall surface of the refrigerant pipe 18 can be improved.

  In the above embodiment, the filter 27 is provided above the opening 26 of the protective cover 24 and the shutter 28 is provided below. However, as shown in FIG. 5, the shutter is provided above and the filter is provided below. good. FIG. 5 is a partially enlarged cross-sectional view of a protective cover showing another embodiment and the embodiment described above, and the same components as those in FIG.

  In FIG. 5, a rectangular tube-shaped ventilation opening 26 is provided below the protective cover 24, and a shutter 28 and a filter 27 are disposed in the opening 26. The shutter 28 has a plurality of horizontal shutter plates 29, 29,... Smaller than the cross-sectional area of the opening 26, and the shutter plate 29 has two upper and lower stages. In the upper stage, four shutter plates 29, 29... Extend from the front wall 31 of the opening 26 to the vicinity of the rear rear wall 32, and the shutter plates 29 at the left and right ends abut against the left and right walls, respectively. 29 is arranged with a gap left and right between them. In the lower stage, three shutter plates 29, 29,... Extend from the front wall 31 to near the rear wall 32 so as to cover the left and right gaps of the upper shutter plates 29, 29,. It is arranged with a gap left and right. The plurality of shutter plates 29, 29,... Are arranged so as to cover substantially the entire cross section of the opening 26 when the opening 26 is viewed from below.

  As mentioned above, although this invention was demonstrated based on the Example, this invention is not limited to this, In the range which does not deviate from a summary, it can deform | transform.

  Further, in this embodiment, a plurality of horizontal plates 29 and 33 are provided in the opening 26 of the protective cover 24, but a plate having a tip portion inclined rather than horizontal may be provided.

It is an external appearance perspective view of the air conditioner provided with the ventilation apparatus in one Embodiment of this invention. It is the perspective view which attached the outer cover to the protective cover. It is a longitudinal cross-sectional view of FIG. FIG. 4 is a partially enlarged view of FIG. 3. It is a partially expanded sectional view of the protective cover which shows another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 12 Indoor fan 13A Indoor fan case 13B Outdoor fan case 14A Suction port 14B Suction port 15a Blowing part 15b Blowing part 16 Supply / exhaust pipe (supply / exhaust path)
17a Indoor side open end 17b Outdoor side open end 18 Refrigerant piping 20 Outdoor fan 24 Protective cover 25 Outer cover 26 Opening portion 27 Filter 28 Shutter 29, 33 Shutter plate 31 Front wall 32 Rear wall

Claims (3)

In an air conditioner that connects an indoor unit installed indoors and an outdoor unit installed outdoors through a wall hole with a refrigerant pipe,
A ventilator having an outdoor fan for ventilation installed outdoors, a fan case for housing the outdoor fan, and a supply / exhaust passage communicating with the fan case and the interior and exterior of the house through the wall hole, In the outdoor part of the ventilator, a protective cover that covers the ventilator is provided, and an opening is provided in the bottom surface of the protective cover, and a plurality of shutter plates smaller than the bottom area of the opening are alternately arranged in the opening. An air conditioner characterized by being provided in steps.   The air conditioner according to claim 1, wherein a filter for preventing intrusion of dust and foreign matters in the outside air is provided in the opening. The air conditioner according to claim 1 or 2, wherein a refrigerant pipe connecting the indoor unit and the outdoor unit is passed through the protective cover.

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