JPH10160315A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical refrigerator by reducing the capacity of a power source circuit to drive a motor for driving an electric equipment. SOLUTION: A water supply pump motor 9 to supply water to an ice making pan of a refrigerator and an ice making pan motor 13 to transfer the ice in the ice making pan to an ice storage device are on the first order of priority, a damper motor 18 to enter/stop the cold air from an in-chamber fan to a refrigerating chamber is on the second order of priority, an in-chamber fan motor 16 to circulate the cold air cooled by a cooler into the chamber and a machine room fan motor 21 to cool a compressor provided in the machine room are on the third order of priority, and a motor for driving each electric equipment is connected to one DC power source circuit as the DC driven constitution, and selectively driven to miniaturize the power source circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a feedwater pump motor,
The present invention relates to a refrigerator provided with electric device driving motors such as an ice tray motor, an internal fan motor, a machine room fan motor, and a damper motor.

[0002]

2. Description of the Related Art Usually, a refrigerator has a machine room fan motor for cooling a compressor provided in the machine room,
An internal fan motor for circulating and supplying the cool air cooled by the cooler to each room in the refrigerator, and a damper motor for putting and tightening the cool air from the internal fan into the refrigerator room are installed. In the refrigerator provided, a water supply pump motor for supplying water to the ice tray and an ice tray motor for transferring ice frozen in the ice tray to an ice storage device are added.

[0003]

Since it is uneconomical to provide a drive power supply circuit to drive and control each of these electric equipment drive motors, each electric equipment is shared by one power supply circuit. It is conceivable to drive the drive motor, but in that case, the power supply capacity must be increased in consideration of the time when all the electric device drive motors operate at the same time, and a ranked up circuit component is required,
Everything from individual circuit components to the overall configuration of the power supply unit has been problematic in that it has become larger and costly.

[0004] In view of the above, it is an object of the present invention to provide an economical refrigerator by reducing the capacity of a power supply circuit for driving each electric device drive motor.

[0005]

The invention according to claim 1 is
At least a feedwater pump motor that supplies water to the ice tray,
An ice tray motor that transfers the ice in the ice tray to an ice storage device, a fan motor in the refrigerator that circulates and sends the cool air cooled by the cooler into the refrigerator, a fan motor in the machine room that cools the compressor installed in the machine room, and a fan in the refrigerator. The refrigerator is equipped with a motor for driving each electric device of a damper motor that tightens and cools the cold air into the refrigerator compartment, and one DC power supply circuit is provided to drive each of the electric device drive motors with DC and to drive each of the electric devices. And a control device for selectively operating the motor by giving a drive priority order.

According to a second aspect of the present invention, each electric device drive motor has a water supply pump motor and an ice tray motor of a first priority, a damper motor of a second priority, an in-compartment fan motor and a machine room fan motor. Is the third priority.

[0007]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS.

FIG. 1 is a longitudinal sectional view of a refrigerator.
In the refrigerator 1 of this embodiment, the inside of the refrigerator is divided into three parts by an insulating partition wall, and a refrigerator room 2 including an refrigeration room 2, an ice making room 3 and a frozen food storage room 4 in an upper stage, and a vegetable room 6 in a lower stage are arranged. Have been.

A water supply tank 7 is provided at the bottom of the refrigerator compartment 2, while an ice tray 8 is provided at the top of the freezer compartment 5. A water supply pump motor 9 is provided on the way from the water supply tank 7 to the ice tray 8. A water supply pipe 10 is provided interposed therebetween.

The ice tray 8 is provided with an ice making sensor 11 for indicating that ice has been formed. The ice tray 8 is provided for transferring the ice made in the ice tray 8 to an ice storage container 12 disposed below. The ice tray motor 13 is attached to the ice tray 8 by twisting the ice tray to peel the ice from the ice tray 8 and then turning it over to drop the ice into the ice storage container 12.

A freezer compartment sensor 14 is disposed at the back of the freezer compartment 5, and further, at the back of the backside, cool air from the cooler 15 is supplied to the inside of the freezer compartment 5 in accordance with the temperature state of the freezer compartment sensor 14. Is installed.

[0012] Behind the rear of the freezer compartment 5, at the same time, the cooler 1
A duct is formed to feed the cold air of 5 into the refrigerator compartment 2 and the vegetable compartment 6, and the duct is installed on the rear surface of the refrigerator compartment 2 at the partition wall between the freezer compartment 5 and the refrigerator compartment 2. A damper motor 18 that opens and closes the damper according to the temperature detected by the refrigerator compartment temperature sensor 17 is provided.

An external air temperature sensor 19 is provided on the upper outer wall of the refrigerator 1.
The compressor 20 for circulating the refrigerant to the cooler 15 and the fan motor 21 for cooling the compressor 20 are disposed in a machine room formed at a lower portion.

Among them, a damper motor 18, an ice tray motor 13, a water supply pump motor 9, a fan motor 16 in the refrigerator,
Since much power is not required for driving the machine room fan motor 21, in this embodiment, a DC device is used and connected to one DC power supply circuit. Selective driving is performed by setting priorities.

As an example, the current flowing through each of these electric devices during driving is 200 mA for the damper motor 18, 400 mA for the ice tray motor 13, and 200 mA for the water supply pump motor 9.
mA, the inside fan motor 16 is 200 mA, and the machine room fan motor 21 is 200 mA. The operation time of each electric device is about 10 seconds for the damper motor 18, about 1 minute for the ice tray motor 13, and about 10 to 20 seconds for the water supply pump motor 9.
One varies from time to time, ranging from approximately tens of minutes to several hours.

FIG. 2 is a block diagram of a control device for controlling the driving of the above-mentioned electric devices. The damper motor 18, the ice tray motor 13, the water supply pump motor 9, the in-compartment fan motor 16, the machine room fan motor 21 Are not shown in the figure.

As shown in FIG. 2, each of these electric devices includes a freezer compartment sensor 14, a refrigerator compartment temperature sensor 17, an outside air temperature sensor 19, sensor signals from the ice making sensor 11, a refrigerator compartment set value 23, and a refrigerator compartment setup. Based on the output of the microcomputer 22 that inputs the value 24, the water supply pump motor 9, the ice tray motor 13 has the first priority, the damper motor 18 has the second priority, the fan motor 16 in the refrigerator, and the machine room fan motor 21 have the third priority. ON and OFF are controlled as the order.

FIGS. 3 to 6 show the processing procedure of the electric equipment drive control performed by the microcomputer 22. When this processing is started, first, the output value of the freezer compartment sensor 14 is higher than the set value. It is determined whether or not (31). As a result, if the temperature of the freezer compartment 5 is higher than the set value, the compressor 20 is driven (32) and the in-compartment fan motor 1
6 is driven (33).

Next, it is determined whether or not the output value of the outside air temperature sensor 19 is higher than the set value (34). If the output value is higher, the machine room fan motor 21 is driven (35). Move to the processing of 4.

On the other hand, when the output value of the freezing room sensor 14 is lower than the set value, if the compressor 20, the in-compartment fan motor 16 and the machine room fan motor 21 are driven, the driving is stopped (37 to 37). 39), and proceed to the processing in FIG.

In the process of FIG. 4, first, it is determined whether or not the output value of the refrigerator temperature sensor 17 is higher than a set value (4).
0) If it is higher, it is next determined whether the damper is already opened (41). If not yet opened, if the in-compartment fan motor 16 and the machine room fan motor 21 have been driven, their driving is stopped (42, 43) and the damper motor 18 is driven in the opening direction (44). However, if the damper is already open (N in 41), the process only proceeds to the process of FIG. 5 without setting anything.

On the other hand, when the output value of the refrigerator compartment temperature sensor 17 is lower than the set value (N of 40), it is necessary to close the damper if it is open, so it is determined whether or not the damper is already closed. (46) If not closed, the drive of the in-compartment fan motor 16 and the machine room fan motor 21 is stopped (47, 48), and the damper motor 18 is driven in the closing direction. However, if the damper is already closed, the damper motor 18 does not need to be driven, so that only the flag F is set and the process proceeds to FIG. 6 without doing anything.

In the process shown in FIG. 5, the microcomputer 22 first performs a series of operations for making ice, ie, the water supply pump motor 9.
Alternatively, it is determined whether or not the operation of the ice tray motor 13 needs to be started (51). In this case, the operation of the water supply pump motor 9 is started when the ice in the ice tray 8 has been transferred to the ice storage container 12 and is empty, so that it is not shown that the ice tray motor 13 has returned to the home position. Judge by detecting with the position sensor. When the ice tray motor 13 starts operating, ice is formed on the ice tray 8,
Since there is still room for ice in the ice storage container 12, it is not shown by the ice making sensor 11 that ice has been formed in the ice tray 8, and whether there is room in the ice storage container 12 for ice. Judge by detecting with the full sensor.

When the start time of the series of ice making operations has been reached (Y in 51), it is then determined whether or not the damper is in operation based on whether or not the flag F is set (52).
When the flag is not set, that is, when the damper is operating, the driving of the damper motor 18 is stopped (53), and a series of ice making operations is started (54). However, if the damper is not operating, if the in-compartment fan motor 16 and the machine room fan motor 21 are driven, the drive is stopped (55,
56) A series of ice making operations is started (54).

Then, after a series of ice making operations is completed (57)
N, 54, 57), when the operation is completed (Y in 57), it is determined whether or not the damper operation has been interrupted based on the setting state of the flag F (58). Is resumed (59). But flag F
Is set and there is no interruption of the driving of the damper, the flag F is reset (60), nothing is performed, and a series of the processing procedure of the electric device driving control is temporarily ended, and the process shifts to the processing of the main routine.

On the other hand, when the driving of the damper motor 18 is resumed (59), the system waits for the damper to open (N of 61, 51, 52, 53, 54, 57, 58, 59, 6).
1) If it is completed (Y of 61), the fan motor 1 in the refrigerator
6. Drive the machine room fan motor 21 (62, 6
3) A series of processing procedures of the electric device drive control is temporarily ended.

If it is not necessary to start the ice making series operation (N of 51) at the time of judging whether or not the series of ice making operations has started (51), the set state of the flag F is judged. Then, (64), if it is set, it is reset (65), and this series of processing is once ended.
On the other hand, if it is not set, it waits for the end of the driving operation of the damper motor 18 in the opening direction (N of 61, 51, 6).
(4, 61), and drives the in-compartment fan motor 16 and the machine room fan motor 21 (62, 63) to temporarily end a series of processing procedures for electric device drive control.

By the way, when it is determined whether or not the temperature of the refrigerator compartment 2 is higher than the set value in the process 40 of FIG. 4, if the refrigerator compartment temperature is lower than the preset temperature, if the damper is open, it is changed. Since the closing operation has to be performed, in this case, the processing shifts to the processing in FIG. 6 after the processing in FIG. 4 is performed, and first, it is determined whether or not a series of ice making operations has started (66).

If the time for starting the series of ice making operation has been reached (Y in 66), it is then determined whether or not the damper is operating by determining whether or not the flag F is set (6).
7) If the flag is not set, that is, if the damper is operating, the drive of the damper motor 18 is stopped (6).
8) A series of ice making operations is started (69). However, if the damper is not operating, if the in-compartment fan motor 16 and the machine room fan motor 21 are driven, the driving is stopped (70, 71) and a series of ice making operations is started (7).
2).

Then, after a series of ice making operations is completed (72)
(N, 69, 72), when it is finished (Y in 72), it is determined whether the damper operation has been interrupted first based on the setting state of the flag F (73), and when the damper operation is stopped (N in 73). Restarts driving the damper motor 18 (74). However, if the flag F is set and the driving of the damper is not interrupted, the flag F is reset (75) and nothing is performed, and a series of processing procedures of the electric device drive control is temporarily ended and the processing shifts to the processing of the main routine. .

On the other hand, when the driving of the damper motor 18 is resumed, the system waits for the damper to open (N, 6 in 76).
6, 67, 68, 72, 73, 74, 76), when the process is completed (Y in 76), the in-compartment fan motor 16 and the machine room fan motor 21 are driven (77, 78), and the electric device drive control is performed. A series of processing procedures is temporarily ended.

If it is not necessary to start the ice making series operation (N of 66) at the time of judging (66) whether or not the series of ice making operation has started, the flag F is set. Judgment is made (79), and if it is set, it is reset (80), and this series of processing is once ended. On the other hand, if not set, the damper motor 1
8 after the end of the closing direction drive operation (N of 66, 66,
79, 76), the internal fan motor 16 and the machine room fan motor 21 are driven (77, 78), and a series of processes of the electric device drive control is temporarily ended.

After the series of processing procedures of the electric device drive control is completed, the microcomputer 22 once returns to the main routine to execute other processes, and then returns to the electric device drive control routine again to execute a series of processes. Execute the processing procedure.

As described above, by executing a series of processing procedures of the electric device drive control of this embodiment, the third-priority internal fan motor 16 and the machine room fan motor 21 are always operated as required. If it is necessary to drive the damper motor 18 of the second priority during the drive, the in-compartment fan motor 16 and the machine room fan motor 21 are temporarily stopped to drive the damper motor 18. Further, at that time, the water supply pump motor 9 or the ice tray motor 13 of the first priority
When it is necessary to drive the damper motor 18, if the damper motor 18 is driven, the drive is stopped and the water supply pump motor 9 or the ice tray motor 13 is driven.

When the driving of the water pump motor 9 or the ice tray motor 13 of the first priority is completed, the driving of the damper motor 18 of the second priority is subsequently resumed. The process returns to the driving of the in-compartment fan motor 16 and the machine room fan motor 21 of the priority order, and this process is always executed.

As a result, the capacity of the DC power supply circuit needs to be a little more than 400 mA at most, and the power supply circuit can be configured using small-capacity circuit components.
The refrigerator can be economically manufactured by reducing the size of the power supply circuit.

[0037]

According to the first aspect of the present invention,
Water pump motor, ice tray motor,
Since each electric device drive motor such as a fan motor in the refrigerator, a machine room fan motor, and a damper motor is selectively DC-driven, the power supply capacity of the DC power supply circuit can be reduced, the power supply device can be downsized, and the cost can be reduced. You can measure down.

According to the configuration of the second aspect of the present invention, since the driving time of the water supply pump motor, the ice tray motor and the damper motor is very short, the in-compartment fan motor and the machine room fan motor are given the third priority. As a result, ventilation for circulation in the refrigerator and for cooling the compressor is always ensured, and normal operation of the refrigerator is maintained without any trouble even if the power supply capacity is reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refrigerator showing one embodiment of the present invention.

FIG. 2 is a block diagram of a drive control device of each electric device of the refrigerator of FIG. 1;

FIG. 3 is an explanatory diagram of a processing procedure of compressor drive control of the refrigerator in FIG. 1;

FIG. 4 is an explanatory diagram of a processing procedure of damper drive control of the refrigerator in FIG. 1;

FIG. 5 is an explanatory diagram of a processing procedure of drive control of a series of ice making operations associated with a damper opening operation of the refrigerator of FIG. 1;

FIG. 6 is an explanatory diagram of a processing procedure of drive control of a series of ice making operations accompanying the damper closing operation of the refrigerator in FIG. 1;

[Explanation of symbols]

 9 Water pump motor 13 Ice tray motor 14 Freezer compartment sensor 16 Internal fan motor 17 Cold room sensor 18 Damper motor 19 Outside temperature sensor 20 Compressor 21 Machine room fan motor 23 Freezer compartment temperature set value 24 Refrigerator compartment temperature set value

Claims (2)

[Claims] 1. A water supply pump motor for supplying water to an ice tray, an ice tray motor for transferring ice from the ice tray to an ice storage, a fan motor for circulating and blowing cool air cooled by the cooler into the refrigerator, A refrigerator equipped with a machine room fan motor for cooling a compressor provided in the machine room, and a damper motor for driving each electric device such as a damper motor for tightening and cooling cold air from a fan in the refrigerator, wherein one DC power supply circuit is provided; A refrigerator, comprising: a control device that drives each electric device drive motor in a direct current manner and selectively operates each electric device drive motor with a drive priority. 2. The electric equipment drive motors have a water supply pump motor and an ice tray motor as a first priority, a damper motor as a second priority, and an in-compartment fan motor and a machine room fan motor as a third priority. A refrigerator characterized by that: