JPH08303804A - Indoor unit of air conditioner - Google Patents

Abstract

(57) [Summary] [Structure] An air conditioner indoor unit having an air inlet and an outlet, a heat exchanger 2 corresponding to the inlet, and a crossflow fan 3 facing the outlet. 1, the thin-type motor 4 facing the rotor to the drive motor of the cross flow fan 3
It was adopted. [Effect] An air conditioner having a high heat exchange rate can be obtained because the heat exchanger in the indoor unit can be expanded by the width of the drive motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an invention in which the width of a heat exchanger or a suction passage is enlarged without changing the outer dimensions of an indoor unit of an air conditioner.

[0002]

2. Description of the Related Art A conventional type of indoor unit of this type is disclosed in Japanese Utility Model Laid-Open No. 155515/1983. This is because the ventilation section (including the heat exchanger) is formed in almost the entire area except for the fan motor space and the invalid spaces on the left and right sides of the heat exchanger by providing the display part and the electric storage part of the electric parts in the lower part of the front of the main body. .

This will be described with reference to FIGS.
Reference numeral 21 indicates an indoor unit, and 22 indicates a front panel. Reference numeral 23 is a suction port, and 24 is a blowout port. 25 is a heat exchanger, 26 is a cross flow fan, 27 is its fan motor, 28 is an air passage, and 29 is an electric controller. Reference numeral 30 indicates a display unit. Although not shown in the figure, the conventional indoor unit 21 having such a configuration is electrically and cyclically connected to an outdoor unit to set a predetermined temperature or humidity in the room. Display unit 3 in the conventional indoor unit 21
0 and the electric control unit 29 as shown in the figure
7, the heat exchanger 25 is extended to the space 32 shown in FIG. 7 where the display unit 30 and the electric control unit housing interior 31 have been provided so far, and the air passage 28 is expanded to heat the indoor unit. He was trying to improve the exchange rate and obtain an efficient room air conditioner. However, the expansion of the ventilation passage 28 is restricted in the thickness direction of the fan motor 27 and does not proceed any further. Therefore, in order to further expand the heat exchanger 25 and the air passage 28, it is necessary to make the fan motor 27 thinner. In order to make the fan motor 27, which is generally used at present, thinner, it is necessary to study the basic structure of the motor.

[0004]

One of the reasons why the commonly used inner rotor type fan motor 27 cannot be made thin is the problem of the end coil as shown in FIG. According to the present invention, the width of the heat exchanger and the width of the ventilation passage are further expanded as compared with the conventional example described above by using different types of fan motors which are completely unrelated to the end coil 27C. This will be described with reference to FIG.
27d is a rotor (rotor) and 27b is a stator (stator). This stator 27b is arranged around the rotor 27d. Further, the rotating shaft 27d is provided in the stator 27b.
The coil 27e is placed in the parallel direction. This type of motor is called an inner rotor type fan motor. This type of stator 27b has an end coil portion 27C.
Is projected to the left and right by L2 and L3 from the size L1 of the stator 27b, the overall size L of the fan motor 27 is L2 + L.
It is well known that it grows by 3 minutes.

An object of the present invention is to provide an efficient room air conditioner by expanding the ventilation passage (including a heat exchanger), improving the heat exchange rate of the indoor unit.

[0006]

In order to achieve the above-mentioned object, the present invention has an air inlet and an outlet, and a heat exchanger is provided facing the inlet, and a cross flow is opposed to the outlet. A rotor facing thin motor is used as a drive motor for the cross flow fan in an indoor unit of an air conditioner provided with a fan, and the width of an air passage and a heat exchanger is expanded. When attaching the thin fan motor to an indoor unit, as a vibration-proof structure which becomes a problem, a thin portion for securing a cushion between the thin fan motor and the indoor unit and a fin for sandwiching the thin fan motor are provided. A ring-shaped anti-vibration rubber is provided and the thin fan motor is mounted on the indoor unit. Further, at least three mounting legs are provided on the thin fan motor side, and a vibration-proof rubber is interposed between the mounting legs and the indoor unit.

[0007]

In the inner rotor type fan motor used in the conventional indoor unit, since the end coil is formed so as to protrude from the thickness of the rotor to the left and right, the end coil portion inevitably increases the width of the drive motor. However, by using a thin fan motor facing the rotor, the thickness of the drive motor can be reduced, and the heat exchanger and the like can be enlarged by this amount to increase the heat exchange amount. In other words, it becomes possible to downsize this indoor unit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is an explanatory view of a main part of an indoor unit of an air conditioner equipped with the present invention. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a front view of a rotor-opposed thin motor. FIG. 4 shows BB of FIG.
Sectional view. 5A and 5B show a vibration isolation structure of the thin motor shown in FIG. 1, where FIG. 5A is a front view and FIG. 5B is a sectional view thereof. Figure 6
Shows an embodiment different from FIG. 5, (c) is a front view, and (d) is a sectional view thereof. FIG. 7 is an explanatory view of the main part of the indoor unit showing the second embodiment. First, FIG. 1 and FIG.
Reference numeral 1 is an indoor unit of the air conditioner, which is electrically and cyclically connected to the outdoor unit, which is not shown in the figure. This indoor unit 1 has a heat exchanger 2 and a cross flow fan 3 inside.
And a thin motor 4 for driving the same. Then, the indoor unit 1 sucks the indoor air as indicated by an arrow P1 by the rotation of the crossflow fan 3 and blows out the air cooled or heated by the heat exchanger 2 as indicated by an arrow P2 into the room (from the arrow P1). A passage through which air flows to P2 is referred to as an air passage.) Next, an outline of a thin motor 4 (rotor facing thin motor) for driving a cross flow fan will be described with reference to FIGS. The rotor 6 of the thin motor 4 is connected to the shaft 5 for driving the cross flow fan 3 and has a disk shape. Further, in this, a permanent magnet 7 is attached to a surface facing a stator 8 described later. Reference numeral 8 represents a stator. As shown in FIGS. 3 and 4, the stator 8 is provided with a plurality of coils arranged in a thickness direction of about 3 mm so as to face the permanent magnet 7. The thin motor 4 is a so-called rotor facing thin motor in which the rotor 6 with the permanent magnet 7 rotates by sequentially switching the energization direction to the stator 8.
As is clear from FIG. 4, the thin motor 4 can have an extremely thin thickness L. In this embodiment, L3 and L in FIG.
Two dimensions can be deleted by 20 mm, and since the disk-shaped rotor is used, the overall thickness can be reduced to 25 to 30 mm by using the conventional motor. Next, a mounting structure of the thin motor 4 to the indoor unit 1 will be described with reference to FIGS. First, in FIG. 5, 9 is a mounting bracket for mounting the thin motor 4 to the indoor unit. 10 is an anti-vibration rubber. The anti-vibration rubber 10 has a meat stealing portion 11 and ribs 12 that sandwich the thin motor 4, and the overall shape is a ring shape. This makes it difficult for the vibration generated in the thin motor 4 to be transmitted to the indoor unit 1. In addition, the meat stealing portion 11 is a rubber vibration isolator 10.
It is provided to bring out the effect of. Next, an embodiment different from FIG. 5 will be described with reference to FIG. In the figure, 13 is a mounting leg provided on the thin motor 4, and the vibration isolating rubber 10 is interposed between the mounting leg 13 and the mounting bracket 9 (mounting to an indoor unit). A plurality of (4) vibration damping rubbers 10 are provided at positions shown in the figure in order to stably hold the thin motor 4. With this structure, the vibration of the thin motor 4 is 4
Since the vibration is transmitted to the mounting bracket 9 (indoor unit) via the vibration-proof rubber 10 supporting points, the vibration of the indoor motor 4 of the thin motor 4 to the indoor unit 1 is improved by improving the performance of the vibration-proof rubber 10 alone. Is suppressed as much as possible. As described above, in the rotor-opposed thin motor, the end coil of the inner rotor fan motor can be made thinner, so that the width of the heat exchanger can be increased. In addition, noise reduction can be achieved by adopting a vibration-proof structure for mounting the thin motor on the main body side (indoor unit side).

Next, the mounting of the thin motor and the mounting of electric parts will be described with reference to FIG. In the figure, 14b
Is a display substrate, 15 is a U-vent pipe provided at the end of the heat exchanger, and this U-vent pipe 15 serves to connect straight pipes (not shown). The U-vent pipe 15 projects from the end of the heat exchanger 2 by the dimension L4. The thin motor 4 is mounted within the L4 size. At this time, the side plate 16 forming the end surface of the cross flow fan 3 may be formed with a bearing 16a for receiving the thin motor shaft 5 in the projection surface of the cross flow fan 3 as shown in the figure. By doing so, the indoor unit 1 does not need to specially prepare a space for mounting the thin motor 4, so that the indoor unit 1 itself can be downsized. Next, attachment of electrical components (including the display substrate) will be described with reference to FIGS. 1, 2, and 7. In the figure, 14 a is a control board of the indoor unit 1. Also, 14b is a display board of the indoor unit 1. The size of the control board L5 is made substantially equal to the thickness of the thin motor. In other words, electrical products (including display board) that cannot fit in this L5 size
Is installed in an ineffective space formed under the dew tray 17. By dissociating electricity in this way, it is not necessary to increase the size of the indoor unit 1 for storing electrical items.

[0010]

According to the present invention, since the heat exchanger (including the ventilation passage) which is thin and has a small width can be enlarged, the ventilation resistance can be reduced without increasing the noise level, and the indoor The heat exchange amount of the unit can be expanded, and an air conditioner with high heat exchange efficiency can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory view of a main part of an indoor unit of an air conditioner equipped with the present invention.

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

FIG. 3 is a front view of a rotor-opposed thin motor.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

5 is an explanatory diagram showing a vibration isolation structure of the thin motor in FIG. 1. FIG.

6 is an explanatory view showing an embodiment different from FIG.

FIG. 7 is an explanatory view of a main part of an indoor unit showing an embodiment different from FIG.

FIG. 8 is an explanatory diagram of an indoor unit of a conventional air conditioner.

9 is a sectional view taken along line CC of FIG.

10 is a cross-sectional view of the fan motor used in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 2 ... Heat exchanger, 3 ... Cross flow fan, 4 ... Thin motor, 14a ... Control board, 14b ... Display board.

Claims (5)

[Claims] 1. An indoor unit of an air conditioner having an air inlet and an outlet, a heat exchanger provided corresponding to the inlet, and a crossflow fan facing the outlet, An indoor unit for an air conditioner, wherein a thin motor having a rotor facing type is used as a drive motor of a cross flow fan, and a width dimension of the heat exchanger is enlarged. 2. When mounting the rotor-opposed thin motor to the indoor unit, the thinned motor for securing a cushion and the thin motor are sandwiched between the thin motor and the indoor unit. The indoor unit for an air conditioner according to claim 1, wherein a ring-shaped anti-vibration rubber having ribs is arranged. 3. When mounting the rotor facing thin motor on the indoor unit side, at least three mounting legs are provided on the thin motor side, and a vibration-proof rubber is interposed between the mounting legs and the indoor unit. The indoor unit of the air conditioner according to claim 1. 4. The indoor unit for an air conditioner according to claim 1, wherein the thin motor is installed within a dimension L4 of a U-bend pipe forming an end of the heat exchanger. 5. A width dimension of an electrical component provided in front of the thin motor is set to be substantially equal to a width dimension of the thin motor, and the remaining electrical components are provided in a lower portion of a dew tray installed in a lower portion of the heat exchanger. The indoor unit for an air conditioner according to claim 1, which is installed in an invalid space.