JP2004278982A - Air-conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioner, eliminating the need for installing an outside air intake box while suppressing power consumption by reducing the output load of a fan motor. <P>SOLUTION: The air-conditioner comprises a fan 2 provided in an air duct of an unit body 1, a heat exchanger 5 provided approximately encircling the fan 2, and a drain pan 6 provided on the lower side of the heat exchanger 5. An outside air inlet 12 is provided on the side face of the unit body 1 at the lower side of the drain pan 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner capable of reducing the output load of a fan motor, reducing power consumption, and eliminating the need for installing an external air intake box by eliminating an external air inflow air path from an outlet air path of a unit body. It is.
[0002]
[Prior art]
For example, in the air conditioner of the conventional example (Example 1) shown in FIG. 7, 1 is a unit main body, 2 is a fan, and is provided inside the unit main body 1 via a motor 3. Reference numeral 4 denotes a bell mouth, which is provided below the fan 2. A heat exchanger 5 is provided inside the unit body 1 so as to surround the fan 2. Reference numeral 6 denotes a drain pan which is provided below the heat exchanger 5 and forms a part of an inflow air passage of outside air. Reference numeral 1b denotes a styrofoam casing that insulates the inside of the unit main body, and protrudes to the side of the heat exchanger 5 to form the outside air intake 12 and the outside air inflow air passage 12a. An indoor air temperature sensor 14a is provided near the outside air intake 12 in the unit main body. In the drawings, reference numeral 1a denotes an outer shell, 7 denotes a panel, 10 denotes a filter, and 11 denotes a maintenance panel.
[0003]
Further, in the air conditioner of the conventional example (Example 2) shown in FIG. 8, 1 is a unit main body, 2 is a fan, and is provided inside the unit main body 1 via a motor 3. Reference numeral 4 denotes a bell mouth, which is provided below the fan 2. A heat exchanger 5 is provided inside the unit body 1 so as to surround the fan 2. A drain pan 6 is provided below the heat exchanger 5. 1b is a styrofoam casing for insulating the inside of the unit. Reference numeral 16 denotes a box for providing an outside air inlet, which is provided with an outside air intake 12 and an outside air inflow air passage 12a. In the drawings, reference numeral 1a denotes an outer shell, 7 denotes a panel, 10 denotes a filter, 11 denotes a maintenance panel, and 16a denotes an outer air intake box outer shell.
[0004]
Further, in the air conditioner of the conventional example (Example 3) shown in FIG. 9, 1 is a unit main body, 2 is a fan, and is provided inside the unit main body 1 via a motor 3. Reference numeral 4 denotes a bell mouth, which is provided below the fan 2. A heat exchanger 5 is provided inside the unit body 1 so as to surround the fan 2. Reference numeral 6 denotes a drain pan, which is provided below the heat exchanger 5. Reference numeral 1b denotes a styrofoam casing that insulates the inside of the unit body. An outside air intake 12 is provided in the outer shell 1a and the casing 1b on the top surface of the unit main body, and an outside air duct 21 is connected to the outside air intake 12. In the drawings, reference numeral 7 denotes a panel, 8 denotes a suction port, 9 denotes an air outlet, 10 denotes a filter, 11 denotes a maintenance panel, and 13 denotes a louver.
[0005]
[Problems to be solved by the invention]
Since the conventional air conditioner is configured as described above, there are the following problems (1) to (6) to be solved.
[0006]
(1) In the air conditioner of Example 1 as shown in FIG. 7, in order to take in outside air, the casing 1b projects to the side of the heat exchanger 5 and presses the inflow air passage 12a. This increases the operating load of the motor 3 and increases power consumption.
[0007]
(2) In order to secure the air volume, it is necessary to rotate the fan at a higher speed than necessary, and there is a problem that the noise value increases.
[0008]
(3) Since the shape of the inflow air passage 12a for taking in outside air is bent and complicated, there is a problem that the suction pressure is high and the amount of intake is very small.
[0009]
(4) Since the indoor air temperature sensor 14a is provided near the outside air intake port 12, the indoor air temperature sensor 14a detects the temperature of the outside air intake air or the temperature of the mixed air of the outside air intake air and the indoor air. There was a problem that could not be measured.
[0010]
(5) In the air conditioner of Example 2 as shown in FIG. 8, it is necessary to install the outside air intake box 16 separately from the unit main body 1 and separately provide the outside air intake port 12, and mounting work and product mass increase. There was a problem that the workability and installation property deteriorated.
[0011]
[Patent Document 1]
Japanese Patent No. 3276941
(6) In the air conditioner of Example 3 as shown in FIG. 9, when the outside air intake port 12 is provided on the top surface of the unit body and the outside air duct 21 is connected, the unit body height and the ceiling height of the outside air duct are required. However, in a place where the ceiling height is not sufficient, there is a problem that the outside air cannot be taken in.
[0013]
[Patent Document 2]
Patent No. 3081525
The present invention solves the above-mentioned problems (1) to (6), and provides an air conditioner capable of reducing the output load of a fan motor, suppressing power consumption, and eliminating the need for installing an outside air intake box. Aim.
[0015]
[Means for Solving the Problems]
An air conditioner according to a first aspect of the present invention provides a fan provided in an air passage of a unit body, a heat exchanger provided to substantially surround the fan, and a drain pan provided at a lower side of the heat exchanger. In the air conditioner having the above structure, an outside air intake port is provided in a side portion of the unit body below the drain pan.
[0016]
An air conditioner according to a second invention is the air conditioner according to the first invention, wherein an indoor air temperature sensor is provided on the opposite side of the outside air intake centered on the fan.
[0017]
An air conditioner according to a third invention is the air conditioner according to the first or second invention, wherein a control device is provided on the opposite side of the outside air intake centering on the fan.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
Embodiment 1 FIG.
In FIG. 3, reference numeral 1 denotes a unit main body, and 2 denotes a fan provided inside the unit main body 1 via a motor 3. The unit main body 1 includes an outer shell 1a made of sheet metal and a casing 1b made of styrene foam. Reference numeral 4 denotes a bell mouth formed by resin molding, which is provided below the fan 2 and is set larger than the fan 2 so that the fan 2 can be removed from the lower surface. Reference numeral 5 denotes a heat exchanger, which is provided inside the unit body 1 so as to surround the fan 2 as shown in FIG. Reference numerals 17 and 18 denote refrigerant pipes on the gas side and the liquid side, which are connected to the unit on the heat source side.
[0019]
In FIG. 4, an outside air intake port 12, which is a knockout hole that can be opened only when taking in outside air, is provided on the opposite side 20 of the unit main body 1.
[0020]
As shown in FIGS. 4 and 6, the drain pan 6 is provided with an outside air intake port 12 for introducing outside air into the unit main body suction portion, and an inflow air passage 12a in a space serving as an air passage through which outside air flows. . The lower part of the drain pan 6 is largely opened so that the outside air can be easily taken into the unit main body 1, and the drain pan 6 forms a part of the inflow air path 12a so as to form a smooth air path. Here, the drain pan 6 is made of styrene foam in consideration of workability.
[0021]
As shown in FIG. 5, reference numeral 14 denotes an indoor air temperature sensor for detecting the indoor air temperature for controlling the indoor temperature. The indoor air temperature sensor 14 takes the outside air around the fan 2 so as not to be affected by the outside air intake air temperature. It is located at the center opposite the mouth 12 and is connected to the control device 15. By providing the room air temperature sensor 14 on the side opposite to the outside air intake 12 around the fan 2, room temperature control can be performed without erroneously detecting the room air temperature. Further, the control device 15 is also provided on the opposite side of the fan 2 from the outside air intake port 12 in order to avoid problems such as condensation due to the temperature of the outside air intake air. Since the control device 15 is provided on the side opposite to the outside air intake 12 around the fan 2, the control device 15 can be prevented from dew condensation.
[0022]
These are all housed inside the unit main body 1, and the panel 7 is provided at the lower part of the unit main body 1. As shown in FIGS. 2 and 3, the panel 7 has a suction port 8 near the center for sucking room air and a blowout port 9 near the outer periphery of the panel 7 for blowing air heat-exchanged inside the unit body 1. Provided. The room air sucked from the suction port 8 passes through the filter 10 and is taken into the unit body. Reference numeral 11 denotes a maintenance panel. By removing the maintenance panel 11, maintenance of the filter 10, the fan 2, the motor 3, and the like can be performed. 5 shows a state in which the panel 7 is removed from FIG. 2 as viewed from below, FIG. 3 shows a cross-sectional view taken along the line AA in FIG. 1, and FIG. 4 shows a cross-sectional view taken along the line BB in FIG.
[0023]
Next, the operation (operation) will be described. When the motor 3 operates, the fan 2 provided in the motor 3 rotates, sucks room air from the suction port 8, takes in outside air from the outside air intake port 12, and the taken outside air passes through a lower portion of the drain pan 6. The air is mixed with the room air that has passed through the filter 10, and is sucked into the fan 2 by the bell mouth 4. The air sucked in by the fan 2 passes through the heat exchanger 5 and is blown out from the outlet 9 toward the room.
[0024]
The outside air is attracted by the suction pressure of the fan 2, but is sucked into the fan 2 from below the bell mouth 4, so that the indoor air temperature sensor 14 is not affected by the air taken in from the outside air and detects only the indoor air temperature. .
[0025]
【The invention's effect】
Since the present invention is configured as described above, it has the following effects.
[0026]
An air conditioner according to the present invention includes a fan provided in a ventilation path of a unit body, a heat exchanger provided to substantially surround the fan, and a drain pan provided at a lower side of the heat exchanger. In the air conditioner, the outside air intake is provided on the side of the unit main body at the lower side of the drain pan, so that the outside air can be directly taken into the unit main body, and the outside air duct is connected to the side of the unit main body. Since no external air intake box is required, a low-cost, lightweight air conditioner can be provided without increasing the height of the unit body.
[Brief description of the drawings]
FIG. 1 is a diagram showing an outer shape of an air conditioner according to Embodiment 1 of the present invention, where (A) is a plan view, (B) is a side view, and (C) is a front view.
FIG. 2 is an external view of the air-conditioning apparatus according to Embodiment 1 of the present invention as viewed from the lower surface.
FIG. 3 is an AA cross-sectional view of the air-conditioning apparatus according to Embodiment 1 of the present invention.
FIG. 4 is a BB cross-sectional view of the air-conditioning apparatus according to Embodiment 1 of the present invention.
FIG. 5 is an internal explanatory diagram of the air-conditioning apparatus according to Embodiment 1 of the present invention as viewed from the lower surface.
FIG. 6 is a diagram illustrating a drain pan of the air-conditioning apparatus according to Embodiment 1 of the present invention, where (A) is a perspective view of the drain pan as viewed from one direction, and (B) is a view from the opposite direction to (A). It is the perspective view which looked at the drain pan.
FIG. 7 is a cross-sectional view (Example 1) of a conventional air conditioner.
FIG. 8 is a cross-sectional view (Example 2) of a conventional air conditioner.
FIG. 9 is a cross-sectional view (Example 3) of a conventional air conditioner.
[Explanation of symbols]
Reference Signs List 1 unit body, 1a shell, 1b casing, 2 fans, 3 motors, 4 bell mouths, 5 heat exchangers, 6 drain pans, 7 panels, 8 inlets, 9 outlets, 10 filters, 11 maintenance panel, 12 outside air intake , 12a outside air inflow air passage, 13 louvers, 14 indoor air temperature sensor, 14a indoor air temperature sensor, 15 control device, 16 outside air intake box, 16a outside air intake box outer shell, 17 gas side refrigerant pipe, 18 liquid side refrigerant pipe , 19 piping side, 20 opposite piping side, 21 outside air duct.

Claims (3)

An air conditioner including a fan provided in a ventilation path of a unit body, a heat exchanger provided to substantially surround the fan, and a drain pan provided at a lower side of the heat exchanger. An air conditioner, wherein an outside air intake port is provided in a side portion of the unit main body below the drain pan. The air conditioner according to claim 1, wherein an indoor air temperature sensor is provided on a side opposite to the outside air intake port around the fan. 3. The air conditioner according to claim 1, wherein a control device is provided on a side opposite to the outside air intake centering on the fan.

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