JPH0464881A - Control device for refrigerator - Google Patents

Abstract

PURPOSE:To reduce the operating rate of a compressor to keep the life of the same long and reduce power consumption by determining the operation of a fan motor upon stopping the compressor by the temperature band of a specification switching chamber. CONSTITUTION:A temperature band detecting means 13 detects the condition of the temperature band of a specification switching chamber 2 and is constituted of a temperature band input detecting unit 11d for detecting to which temperature band among a partial chamber temperature band, a child chamber temperature band and a refrigerating chamber temperature band the detection is set. An opening and closing detecting means 14 detects the opening and closing condition of a motor driven damper 10 and is constituted of a detecting unit 11j. An operation control means 15 controls the operation of a fan motor 9 based on the detecting results of the temperature band detecting means 13 and the opening and closing detecting means 14 so that the fan motor 9 is operated when the partial chamber temperature band is set and the motor driven damper 10 is opened under a condition that a compressor 7 is stopped except the case of defrosting.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to controlling the internal temperature of a specification switching chamber partitioned into a refrigerator.

[Prior Art] Fig. 4 is a longitudinal cross-sectional view of a conventional refrigerator having a specification switching chamber as shown in, for example, Japanese Utility Model Application Publication No. 61-185975, and in Fig. 9, (1) is the freezer compartment, (2) is the specification switching room,
(3) is a refrigerator, (4) is an operation panel, (5) is a temperature sensor (hereinafter referred to as F thermistor) that detects the internal temperature of the freezer compartment fi+, and f61 is a temperature sensor that detects the internal temperature of the specification switching compartment (2). Temperature sensor to detect (hereinafter referred to as M thermistor),
(7) is a compressor, (8) is a cooler, (9) is a fan motor that forcibly circulates cold air into the refrigerator, (101 is an electric gun bar that controls the amount of cold air flowing into the specification switching chamber (2),
(1 and 11 are control units, (121 is a power supply.

FIG. 5 is a circuit block diagram showing a conventional refrigerator control device, and in FIG. 1, (4a).

(4b), f4c) are selection switches for selecting the temperature range of the specification switching chamber (2), and these are selected from the operation panel (
4) and can be selected from the outside, respectively (4d)
is the partial room temperature zone, and (4b) is the chilled temperature zone.

(4c) is assigned to the refrigerator room temperature zone. (4d
l.

(4el, (4fl are light emitting elements that display the temperature range of the specification switching chamber (2), and these are the operation panel (4fl).
), respectively (4d) is a partial display,
(4e) is a chilled display, and (4f) is a refrigerated display.

(lla) is a temperature zone human power detection unit, (llb) is a temperature zone display drive unit, (1, 1, c) is a microcomputer (hereinafter referred to as a microcomputer), (lid) is a ROM that stores programs ( read-only memory), (11,e) is RAM (random access memory) that stores processing results and data, (l
lfl is a driving unit.

(Ilgl, (Ilhl, (llil) are relays that directly operate the compressor (7), fan motor (9), and electric damper (10), respectively, (IIJ)
is a detection unit that detects the operating state (open/closed) of the electric damper (10).

Next, regarding the operation, the ROM (LI) of the microcontroller (llc)
The program stored in dl will be explained in accordance with the flowchart of FIG. 6, which shows an outline of the program. First, step (100
1, F thermistor (5) and M thermistor (6)
Read the input of . Next, in step +101), if the internal temperature of the freezer compartment (1) is high according to the already read temperature data of the F thermistor (5), the operation of the compressor (7) is stopped, and the process proceeds to step (102). At (102), the compressor (7) is operated and the fan motor (9
) is set to F.1. Conversely, step (101
1, if the internal temperature of the freezer compartment (1) is low, the process proceeds to step (103), where the compressor (7) is stopped and the operation flag of the fan motor (9) is set to F.0.

Next, in the station room (l[14), the specification switching room (
2) selection switch (4a), f4b), (4
c) Read the human power, and the processes from step (105) to step 18) are divided into partial room temperature zone, chilled room temperature zone, and refrigerator room temperature zone based on the data input in step (104). Process. For example, in the case of partial room temperature zone, step (105)
The process proceeds to step (1071), and in step (107), the light emitting element (4) that displays the partial room temperature zone setting is activated.
d), turn off the light emitting elements (4el, (4fl) for the chilled room temperature zone and refrigerator room temperature zone, and turn off the light emitting elements (4el,
) is the set moisture level as the partial temperature zone. Next, in step (1,08+), it is determined whether the electric damper (■0) is open or closed based on the temperature of the specification switching chamber (2).

When the electric damper (10) is open, one step (
At 1091, the electric damper (10) is opened and the operation flag of the fan motor (9) is set to F=1.

In other cases, if set to the chilled room temperature range.

Processing such as step (106) and step (1111 to step (114)) is performed, and in the case of the refrigerator compartment temperature range, processing such as step (106) and step f1.151 to step f1.181 is performed.Next. In step (1, 19), if the operation flag of the fan motor (9) determined in the above process is F.1, the fan motor (9) is operated in step (1201).

Conversely, if F.0, the operation of the fan motor (9) is stopped in step (121). The above control is performed.

[Problems to be Solved by the Invention] Since the conventional refrigerator control device is configured as described above, if the electric damper is open during cooling, the fan motor is operated regardless of the temperature range state of the specification switching chamber. However, since the internal capacity of the specification switching room is smaller than that of other cold storage rooms, the internal temperature distribution of the specification switching room is also being used as a refrigerated room or a chilled room. In some cases, there is little effect even if the fan motor is not operated, and conversely, if the fan motor is operated, the operating rate of the compressor will increase and the life of the compressor and fan motor may be shortened. There were also problems such as increased power consumption.

This invention was made to solve the above problems, and improves the temperature distribution inside the refrigerator by determining the operation of the fan motor when the compressor is stopped depending on the temperature range of the specification switching room. The purpose of this invention is to provide a refrigerator control device that can reduce the operating rate of the compressor, maintain a long service life, and reduce power consumption, since the fan motor does not operate when the fan motor is set in a temperature range where it is not required. shall be.

[Means for Solving the Problems] The refrigerator control device according to the present invention includes a temperature range detection means for detecting the temperature range of the specification switching chamber, and an electric pumper that controls the opening and closing of the electric pumper that controls the amount of cold air flowing into the specification switching chamber. The device is provided with an opening/closing detection means for detecting, and an operation control means for controlling the operation of the fan motor based on the detection results of the temperature range detection means and the opening/closing detection means.

[Function] The refrigerator control device according to the present invention operates the fan motor appropriately based on the temperature range of the specification switching chamber and the opening/closing of the electric gun bar using the operation control means.

When the fan motor is stopped, the operating rate of the fan motor decreases, and the operating rate of the compressor also decreases.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. The longitudinal section and circuit block configuration of the refrigerator are similar to the conventional 4th section.
This invention is the same as FIG.
Since this is realized by changing the program stored in the ROM (lldl) of the cl, a detailed explanation of the configuration will be omitted.

FIG. 1 is a block diagram showing a control device for a refrigerator according to an embodiment of the present invention, and FIG.

(13) is a temperature zone detection means for detecting the state of the temperature zone of the specification switching chamber (2), and the temperature zone input detection section (lid
), which detects whether the temperature zone is set to a partial room temperature zone, a chilled room temperature zone, or a refrigerator room temperature zone. (14) is open/close detection means for detecting the open/close state of the electric damper (10);
).

(15) is based on the detection results of the temperature range detection means (13) and the opening/closing detection means (14).
) is an operation control means that controls the operation of the compressor (7) other than during defrosting, when the compressor (7) is stopped, the partial room temperature zone is set, and the electric damper (10) is open. The fan motor (9) is controlled so that only the fan motor (9) is operated.

Next, regarding the operation, the operation table of the fan motor (9) when the compressor (7) is stopped in Figure 2, and the microcomputer [11c]
A part of the program stored in the ROM (lldl) will be explained in accordance with the schematic flowchart shown in FIG. First, in step (1001), temperature detection inputs of F thermistor (5) and M thermistor (6) are read.
In step 0), it is determined whether defrosting is in progress, and if defrosting is in progress, the process proceeds to step (21). relay fl1g), (llh
The excitation of the coil section of l is stopped, the contacts are opened, and the compressor (
7) and the fan motor (9) are stopped, and the electric damper (lO) is set to open.

Conversely, if defrosting is not in progress in step (20), the following processing is performed. First, in step (1 old) to step (1, 03), the operation flag of the operation stop of the compressor (7) and the fan motor (9) is determined.

Next, step (104) to step f are performed in the same manner as before.
1.07) and step 11), (1151
Detects the temperature range of the specification switching chamber (2) and displays its setting status.

Set the temperature for each temperature range.

Then, the state will be as shown in FIG.

The operation of the fan motor (9) is controlled according to the settings of the specification switching chamber (2) and the opening/closing of the electric gun bar (10).

In other words, in the case of partial room temperature zone setting, step (
At 1081, it is determined whether to open or close the electric damper (lO) based on the temperature of the specification switching chamber (2) in the partial temperature zone, and when it is open, the electric damper (lO) is opened or closed at step (1091).
) is opened, and the operation flag of fan motor (9) is set to F=1 in step (1201).
) to drive.

In addition, at step fllO+, an electric damper (1o
) is closed and steps (112), (114)
, (221 chilled room temperature range, step (116
1, (11, 81, (231 refrigerator room temperature range)
Step (1,01) to step (1031)
When the compressor (7) is stopped, the operation flag of the fan motor (9) becomes F=0, and the operation of the step (
Stop at 1211.

In this way, when the compressor (7) is stopped except during defrosting, the electric damper (10)
By operating the fan motor (9) when the fan motor (9) is opened and stopping it in other cases, the overall operating rate of the fan motor (9) is reduced, and the operating rate of the compressor (7) is also reduced. descend.

[Effects of the Invention] As described above, according to the present invention, there are provided a temperature range detection means for detecting the temperature range of the specification switching chamber, and an opening/closing detection means for detecting the opening/closing of the electric damper that controls the amount of cold air flowing into the specification switching chamber. and an operation control means that controls the operation of a fan motor that forcibly circulates cold air inside the refrigerator based on the detection results of the temperature range detection means and the opening/closing detection means. The fan motor can be operated only when the temperature range is set to minimize the
This has the effect of preventing an increase in the operating rate of the compressor, extending the life of the compressor and fan motor, and reducing power consumption.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a control device for a refrigerator according to an embodiment of the present invention, FIG. 2 is a schematic flowchart showing a program according to an embodiment of the present invention, and FIG. 4 is a longitudinal section showing a conventional refrigerator. 5 is a circuit block diagram showing a conventional refrigerator control device, and FIG. 6 is a schematic flowchart showing a conventional program. (2) is the specification switching room, (9) is the fan motor, (1
0) is an electric damper, and (13) is a temperature range detection means. (14) is an opening/closing detection means, and (15) is an operation control means. Note that in the two figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A specification switching room that has a plurality of switches, and the temperature zone is set to be changed to a partial room temperature zone, a chilled room temperature zone, and a refrigerator temperature zone based on the switch operation, and a display section that displays the temperature zone. In the refrigerator equipped with the above, temperature range detection means for detecting the set temperature range of the specification switching chamber;
Open/close detection means for detecting the state of the electric damper that controls the amount of cold air flowing into the specification switching chamber, and operation of a fan motor that forcibly circulates cold air into the refrigerator based on the detection results of the temperature range detection means and the open/close detection means. 1. A control device for a refrigerator, comprising: an operation control means for controlling.