JP2000041370A - Fan motor for refrigeration equipment - Google Patents

Abstract

(57) [Problem] Refrigeration equipment such as a refrigerator has come to use a brushless DC fan motor with small power consumption, but requires an external AC-DC conversion power supply unit. Since an AC-DC conversion power supply unit and a lead wire connecting the power supply unit and the motor are provided, the number of components is large, the structure is complicated, the size is increased, and the cost is increased. SOLUTION: A DC motor is mounted on a single printed circuit board 6, and an AC power connection terminal plug 14 is attached to the printed circuit board 6.
The rectifier component 10 and the control component drive element 13 are incorporated, and the DC motor and the AC power supply connection terminal plug 14 are integrated with the diode 10 and the drive element 13 and molded and formed. And a rectifying unit and a control unit are integrated to realize a compact refrigeration equipment fan motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan motor for forcibly circulating cool air in a refrigerator or a refrigerator, and more particularly to a miniaturized DC fan motor.

[0002]

2. Description of the Related Art Generally, refrigeration equipment such as a refrigerator is a large power consuming equipment in a home.
There is a demand for power saving. In the refrigeration equipment, the compressor consumes the most power, but the power consumption of the fan motor for forcibly circulating the cool air in the refrigerator is also insignificant, and it is important to reduce the power consumption of this fan motor. I have.

As a fan motor for refrigeration equipment, a shaded coil type AC fan motor 1 shown in FIG. 5 is used because it can be directly driven by an AC power source, has a small number of parts, and is low in cost. However, power consumption is large, which is not preferable from the viewpoint of power saving.

[0004] For this reason, as shown in the refrigerator electric circuit diagram of FIG. 6 and the perspective view of the fan motor unit of FIG.
In order to supply DC power to the C fan motor 2, an AC-DC conversion power supply unit 3 for performing AC-DC conversion outside the DC fan motor 2 has been developed. FIG.
4 is an AC power supply and 5 is a compressor.

[0005]

The apparatus using the DC fan motor 2 consumes less power than the AC fan motor described above, but requires the AC-DC conversion power supply section 3 and the AC-DC conversion power supply section. 3 and the provision of lead wires for connecting the power supply unit and the motor, the number of parts is increased, the structure is complicated, the apparatus is large, and the cost is high.

Further, when the motor drive power is obtained in the AC-DC conversion power supply unit 3, the pressure is reduced through a resistor or a transformer or the like, which causes a power loss, which is not preferable in terms of power saving. Met.

An object of the present invention is to provide a fan motor for refrigeration equipment, which can be compactly constructed as a whole and has low power loss, while keeping in mind the above conventional problems.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to mount a drive coil of a DC motor and a stator member such as a stator core on a single printed circuit board, and attach an AC power supply to the printed circuit board. , A rectifier component for rectifying AC power, and a controller component for controlling the motor drive coil. The DC motor, AC power connection terminal plug, rectifier component, and controller component are connected. And a fan motor for refrigeration equipment constituted integrally.

According to the present invention, a DC motor with low power consumption is used, and a rectifying unit and a control unit are integrated, so that a compact fan motor for refrigeration equipment can be realized.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a DC motor is mounted on a printed circuit board, and a rectifier component for rectifying the AC power supply terminal plug and the AC power supply and the motor drive are mounted on the printed circuit board. It is a fan motor for refrigeration equipment that integrates a DC motor, an AC power connection terminal plug, a rectifier component, and a controller component, incorporating a control component for controlling the coil, and an external AC-DC conversion power supply. There is no need to provide a lead wire or the like that connects the power supply unit and the motor as in the case of the unit, so that the number of parts is reduced, the structure is simple and compact, and the cost is reduced.

According to a second aspect of the present invention, in the refrigeration equipment fan motor according to the first aspect, the printed circuit board is configured to directly supply high-voltage DC power obtained by the rectifying section to the motor driving coil. And a wiring unit for supplying a low-voltage DC power supply obtained by reducing the high-voltage DC power rectified by the rectification unit to the control unit. The high-voltage DC power is directly supplied to the motor drive coil. Power supply, there is no power loss in the drive power supply system, while the control unit has low voltage and low power consumption. This has the effect that a fan motor for refrigeration equipment with extremely low power can be provided.

According to a third aspect of the present invention, there is provided a fan motor for refrigeration equipment according to the first aspect, wherein a printed circuit board, a stator portion of a DC motor, an AC power connection terminal plug, a rectifying portion component, and a control portion. The component parts are molded and integrated with a molding material,
The molding material has the effect of making the entire motor compact and obtaining high reliability.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view of a fan motor for refrigeration equipment according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional side view of the fan motor for refrigeration equipment, and FIG. FIG. 4 is a schematic circuit diagram of a motor, and FIG. 4 is an electric circuit diagram of a refrigerator using the fan motor for refrigeration equipment.

As shown in FIGS. 1 and 2, in the fan motor for refrigeration equipment according to the first embodiment, a stator portion of a DC motor including a motor drive coil 7 and a stator core 8 is mounted on a printed circuit board 6. The rotor 9 is combined with the stator. The printed circuit board 6
In the space outside of the portion where the DC motor is mounted, a rectifying unit including the diode 10 and the smoothing capacitor 11, and a control unit including the magnetic pole detecting element 12, the driving element 13, and other circuit elements are mounted.

Further, an AC power connection terminal plug 14 is attached to the edge of the printed circuit board 6.

As shown in the schematic circuit diagram of the fan motor for refrigeration equipment shown in FIG.
4, a DC power is supplied to a rectifying unit 16 including a diode 10 and a smoothing capacitor 11, and a high voltage DC voltage is applied to the printed circuit board 6 from the rectifying unit 16.
A control unit comprising a magnetic pole detection element 12, a drive element 13, and other circuit elements, using a wiring 17 for supplying power to the motor drive coil 7 and a DC low voltage obtained by reducing the high voltage power supply of the rectification unit 16 as a control power supply. Wiring 19 to supply to 18
Is provided.

As shown in FIGS. 1 and 2, the printed circuit board 6, a stator portion of a DC motor comprising a motor drive coil 7, a stator core 8, and the like, an AC power connection terminal plug 14, a diode 10 and smoothing capacitor 11
The rectifying unit 16 and the control unit 18 including the magnetic pole detecting element 12, the driving element 13, and other circuit elements are molded with a molding material 20 such as unsaturated polyester to constitute an integrated fan motor for refrigeration equipment. are doing.

The fan motor for refrigeration equipment having the above-described structure has a motor section on the printed circuit board 6 and an AC power connection terminal plug 14.
, The rectifying unit 16 and the control unit 18 are provided, and the whole is molded, so that the rectifying unit and the control unit are integrated with the motor and are not externally attached. Water resistance and moisture resistance are improved, and high reliability is obtained. Further, the circuit configuration is simple, and a reliable control operation can be performed.

Further, the DC fan motor is originally A
Although the power consumption is smaller than that of the C fan motor, the motor drive coil 7 is directly connected to the rectifier 16 as in the present embodiment.
By supplying DC high voltage power to the
A DC motor with lower power consumption can be provided.
Although the DC power is supplied to the control unit 18, the power to the control unit 18 is a low DC voltage, and the power consumption of the driving elements is small. Therefore, the power consumption of the entire DC motor is reduced. The effect is extremely small.

[0020]

As is apparent from the above description, according to the present invention, a motor drive coil and a stator are mounted on a printed circuit board, and an AC power supply terminal plug and an AC power supply terminal plug are mounted on the printed circuit board.
A rectifier component for rectifying the power supply and a controller component for controlling the motor drive coil are incorporated, and the DC motor and A
Since the C power connection terminal plug, rectifier component and control component were integrated to form a fan motor for refrigeration equipment, the rectifier and controller were integrated with the motor and were not externally attached. It can be made compact and has the effect of obtaining high reliability.

According to the present invention, there is also provided a wiring section for directly supplying a high voltage DC power obtained by a rectifying section to a motor drive coil on a printed circuit board, and a DC low voltage formed by reducing the high voltage DC power rectified by the rectifying section. Is provided, a high-voltage DC power supply rectified by the rectification unit is directly supplied to the drive coil as a drive power supply, and the high-voltage DC power supply rectified by the rectification unit is reduced in pressure. DC low-voltage control power can be supplied to the control unit, and there is no power loss in the drive power supply system.
On the other hand, since the control unit has a low voltage and consumes a small amount of power, the influence of the power consumption of the control power supply system is small.
It can be a fan motor.

In the present invention, the printed circuit board, the stator of the DC motor, the AC power connection terminal plug, the components of the rectification unit and the components of the control unit are molded and integrated with a molding material, so that they are compact. In addition, a fan motor for refrigeration equipment having stable quality can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fan motor for refrigeration equipment according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional side view of the fan motor for the refrigerator.

FIG. 3 is a schematic circuit diagram of the fan motor for the refrigerator.

FIG. 4 is an electric circuit diagram of a refrigerator using the fan motor for the refrigerator.

FIG. 5 is a perspective view of a conventional AC fan motor for refrigeration equipment.

FIG. 6 is an electric circuit diagram of a refrigerator using a DC fan motor for a conventional refrigerator.

FIG. 7 is a perspective view of a conventional DC fan motor for refrigeration equipment.

[Explanation of symbols]

 Reference Signs List 6 Printed circuit board 7 Motor drive coil 8 Stator iron core 9 Rotor 10 Diode 11 Smoothing capacitor 12 Magnetic pole detection element 13 Drive element 14 AC power supply connection terminal plug 15 AC power supply 16 Rectifying unit 17 Wiring 18 Control unit 19 Wiring

Continuing from the front page (72) Tomohiro Matsuyama 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 5H019 AA07 BB01 CC03 DD00 EE01 FF01 GG01 5H623 AA08 BB07 JJ06 LL01 LL10 LL14

Claims (3)

[Claims] 1. A motor drive coil and a stator are mounted on a printed circuit board, and an AC power supply terminal plug, a rectifier component for rectifying the AC power, and a controller component for controlling the motor drive coil are mounted on the printed circuit board. A refrigeration equipment fan motor, wherein a DC motor, an AC power connection terminal plug, a rectifier component, and a controller component are integrated. 2. A printed circuit board comprising: a wiring section for directly supplying a high-voltage DC power obtained by a rectifying section to a motor driving coil; and a DC low-voltage control power supply obtained by reducing the high-voltage DC power rectified by the rectifying section. The fan motor for refrigeration equipment according to claim 1, further comprising a wiring unit configured to supply the control unit with the control unit. 3. A printed circuit board, a stator portion of a DC motor and A
2. The fan motor for refrigeration equipment according to claim 1, wherein the C power connection terminal plug, the rectifying section component, and the control section component are molded and integrated with a molding material.