JPH1038434A - Damper for freezing refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from feeling unnecessary anxiety by interrupting the operation of a baffle when a door is opened by providing a control part for controlling a driving part is such a way that opening/closing operation of the baffle is performed only when the door is closed. SOLUTION: It is judged based upon a signal from a door opening/closing detection part 75 whether or not a door is closed. When the door 9 is closed, the opening/closing state of a baffle is judged, and provided the door 9 is closed, the baffle is opened. Further, when the operation advances to a process where the operation of a compressor, etc., is interrupted and production of cold air is interrupted, a control part sends a signal to a cold air producer driver of interrupting the operation of the compressor, etc., whereby the opening/closing state of the door 9 is judged. More particularly, the compressor, a fan 13, and a stepping motor are operated with the signal from the control part to perform the production of cold air and the opening/closing operation of the baffle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention does not operate the baffle when the door of the refrigerator compartment is open when the baffle is operated to guide the cool air generated by the cool air generator to the refrigerator compartment or the freezer compartment. And a damper device for a refrigerator-freezer as described above.

[0002]

2. Description of the Related Art Refrigerators having a freezer compartment and a refrigerator compartment (including a vegetable compartment, an ice compartment and the like) are widely used in households.

In such a refrigerator, cold air generated by a compressor, a cooler, or the like, which is a cool air generating means, is guided to the freezing room through a freezing room passage connecting the cold air generating means and the freezing room. The temperature of the freezer compartment and the refrigerating compartment is adjusted by guiding the refrigerating compartment through the refrigerating compartment passage communicating with the refrigerating compartment.

At this time, whether the cool air is guided only to the freezer compartment or to the freezer compartment and the refrigerating compartment is controlled by a damper device provided in the refrigerating compartment passage. The damper device has a baffle, and When the baffle closes the refrigerating compartment passage, the blowing of cool air to the refrigerating compartment is stopped, and when the baffle opens the refrigerating compartment passage, cool air is blown to the refrigerating compartment.

[0005] When it is not necessary to blow cool air into both the refrigerator compartment and the freezer compartment, the refrigerator compartment passage is closed and the compressor and the fan are stopped.

[0006]

However, in the above configuration, the operation of the baffle is accompanied by a corresponding operation sound.
When the user opens and closes the refrigerator compartment door and takes in and out of articles, there is a problem in that, when the baffle is operating, the user feels anxiety that a malfunction or the like may occur due to the operation sound.

SUMMARY OF THE INVENTION The present invention provides a refrigerator-freezer damper device in which the operation of the baffle is stopped when the door of the refrigerator compartment is opened so that the user does not needlessly worry. Aim.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a refrigerating compartment passage communicating between a refrigerating compartment and a refrigerating compartment that communicates a refrigerating compartment with a refrigerating compartment. A refrigerator compartment passage communicating with the refrigerator compartment, and provided in the middle of the refrigerator compartment passage to open the refrigerator compartment passage when blowing the cool air to the refrigerator compartment, and to blow the cool air to the refrigerator compartment. In a damper device for a refrigerator having a baffle for closing the refrigerator compartment passage when stopping and a drive unit for operating the baffle, a door open / close detector for detecting the opening / closing of a door of the refrigerator compartment; Judge whether the door is open or closed based on the signal from
A control unit that controls the driving unit so as to open and close the baffle only when the door is closed.

That is, the control section judges that the door is open based on a signal from the door opening / closing detection section, and when the door is open, does not drive the damper apparatus, so that the operation sound of the damper apparatus is controlled. Is prevented from affecting indoors.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a refrigerator having a damper device according to the present invention, and FIG. 2 is a side sectional view thereof.

The refrigerator-freezer has a main body 1 having a heat insulating structure (hereinafter referred to as a main body). The main body 1 is filled with a foamed heat insulating material 4 between an inner box 2 and an outer box 3 each having an open front surface. Is formed.

Further, inside the main body 1, a refrigerator compartment 5 having a heat insulating door 9 and a plurality of shelves 11 therein and a freezer compartment 6 having a heat insulating drawer 10 are arranged in order from the top. And a vegetable room 7, which are partitioned by a partition wall 8.

An ice temperature chamber 15 is provided at a lower portion of the refrigerator compartment 5 and a cooler 1 serving as a cool air generating means is provided at the back of the freezer compartment 6.
A cooling chamber 14 provided with a fan 2 and a fan 13 is provided.

Further, a damper chamber 20 in which a damper device 50 is provided is provided behind the ice temperature chamber 15.

Then, the low-temperature refrigerant generated by the compressor 28 and the like disposed at the lower part of the refrigerator is circulated to the cooler 12, and by rotating the fan 13, the cool air generated in the cooler 12 is passed through the refrigerator passage. The air is sent to the refrigerator compartment 5 and to the freezer compartment 6 through the freezer passage.

The freezer compartment passage is a passage that connects the cooling compartment 14 and the freezer compartment 6 to each other. The refrigerating room passage is composed of a cool air introducing passage 24 for communicating the cooling room 14 with the damper room 20 and a cold air duct 16 connected to the cold air introducing passage 24 in the damper room 20. The cold air supply path 1 for the refrigerator compartment, which is provided at the back of the refrigerator and communicates with the refrigerator compartment 5
8, a cold air supply passage 29 for the vegetable room communicating with the vegetable room 7 and a cool air supply passage 23a and 23b for the ice green room communicating with the ice temperature room 15 are provided.

As described above, the cool air from the cooler 12 is blown to the freezing room 6 and is guided to the damper device 50 in the damper room 20 by the cool air introduction passage 24, and the damper device 5
From 0, the air is sent to the refrigerator compartment 5, the vegetable compartment 7, and the ice temperature compartment 15 through the cooling duct 16.

Next, the damper device 50 will be described in detail with reference to the drawings. FIG. 3 is a perspective view showing the appearance of the damper device 50.

The damper device 50 comprises a passage opening / closing means having a passage opening / closing section 51 and a driving section 56, and a control means 70 having a temperature detecting section 71, a temperature setting section 72, a door opening / closing detecting section 75 and a control section 73. Have been.

The passage opening / closing portion 51 is disposed so as to close the cool air introduction passage 24 and has a closing plate 52 provided with an opening 53, and one end of the closing plate 52 rotates as a rotation shaft 55. Thus, the baffle 54 has a baffle 54 that closes the cool air introduction passage 24 by contacting the opening 53 and opens the cool air introduction passage 24 by moving away from the opening 53.

As shown in FIG. 4, the driving section 56 applies a rotating force to a rotating shaft 55 of the baffle 54 to
, A plurality of gears 60 for generating a large torque by reducing the rotation speed of the stepping motor 59, a stopper 61 for regulating the position of the baffle 54, and the like.

FIG. 5 shows a block diagram of the control means 70.
The temperature detector 71 of the control means 70 has a refrigerator temperature sensor 71a for detecting the temperature of the refrigerator 5 and a freezer temperature sensor 71b for detecting the temperature of the freezer 6; It has a refrigerator room temperature setter 72a for setting the temperature of the refrigerator compartment 5 and a freezer room temperature setter 72b for setting the temperature of the freezer room 6.

The door opening / closing detecting section 75 includes, for example, the door 9
The main body 1 is disposed between the door 9 and the main body 1 to detect when the door 9 is closed.

The control section 73 transmits a control signal based on signals from the temperature detecting section 71, the temperature setting section 72, and the door opening / closing detecting section 75 to the driver 7 for the stepping motor of the driver 74.
4a and a CPU 73a for outputting to the cold air generator driver 74b to stop the compressor 28, the fan 13 and the stepping motor 59, and a memory 73b for storing various data such as control information performed by the CPU 73a. .

With such a configuration, the compressor 28, the fan 13, and the stepping motor 59 operate according to the signal from the control unit 73, thereby generating cold air and opening and closing the baffle 54.

By the way, the stepping motor 59 is operated by a pulse signal, rotates by an amount corresponding to the pulse signal, and keeps supplying an exciting current at the time of stop to generate a holding torque, thereby enabling a quick stop. ing.

By using such a stepping motor 59, for example, a means for detecting the open / closed state of the baffle 54 which occurs when an AC motor is used becomes unnecessary, and the means may become icy and become uncontrollable. Disappears.

Further, since it is possible to quickly stop by the holding torque, even if a gear or the like is used, the holding torque acts as a brake against the inertia of the gear, so that the baffle 54 can be easily stopped at a predetermined position. become.

Further, since the driving unit 56 having the above-described structure applies a driving force to the baffle 54 in both the opening operation and the closing operation in the opening and closing operation of the baffle 54, the baffle 54 does not freeze and becomes uncontrollable.

Next, the operation in which the control means 70 controls the damper device 50 to control the temperature of the refrigerator will be described with reference to the flowchart shown in FIG.

The temperature control of the refrigerator-freezer is roughly divided into three.
Are classified into two processing systems. The compressor 28 and the like are operated, and the baffle 54 is brought into contact with the closing plate 52 to close the cool air introduction passage 24, whereby the cool air is blown only to the freezing compartment 6. And the like, and the contact between the baffle 54 and the closing plate 52 is released to open the cool air introduction passage 24, whereby the cool air is blown to the refrigerating room 5 and the freezing room 6. The third processing system for stopping the operation of the machine 28 and the like to interrupt the generation of cool air will be described separately for convenience.

In step S1, the control unit 73 determines the measured temperature Fr of the freezer compartment 6 based on the signal from the freezer compartment temperature sensor 71b provided in the freezer compartment 6,
It is determined whether the temperature is higher than the set temperature Fs set in 2b. Based on the determination, it is determined whether the subsequent processing performs the first or second processing system or the third processing system.

That is, when the measured temperature Fr is higher than the set temperature Fs, step S is executed to execute the first or second processing system.
The process proceeds to step S2, and if the measured temperature Fr is lower than the set temperature Fs, the process proceeds to step S10 to perform the third processing system.

In step S2, the measured temperature F of the freezer compartment 6
r is higher than the set temperature Fs, the control unit 73
8 and a signal for operating the fan 13 to the driver 74b for the cold air generator, and based on the signal from the refrigerator temperature sensor 71a provided in the refrigerator 5 in step S3, the measured temperature Rr of the refrigerator 5 is calculated. It is determined whether the temperature is higher than the set temperature Rs. When the measured temperature Rr is higher than the set temperature Rs, the process proceeds to the first processing system. on the other hand,
When the measured temperature Rr is lower than the set temperature Rs, the process proceeds to the second processing system.

When the process proceeds to the first processing system, the controller 73 determines whether or not the door 9 of the refrigerator compartment 5 is closed in step S4 based on a signal from the door open / close detector 75, and the door 9 is opened. If so, the process returns to step S1 and loops until the door 9 closes.

On the other hand, when the door 9 is closed, the process proceeds to step S5, where the open / closed state of the baffle 54 is determined. When the baffle 54 is closed, the process returns to the step S1, and when the baffle 54 is open, the baffle 54 is closed in the step S6 and the step S1 is performed.
Return to

When the process has proceeded to the second processing system, it is determined in step S7 whether or not the door 9 of the refrigerator compartment 5 is closed based on a signal from the door open / close detector 75. And door 9
When is opened, the process returns to step S1, and loops until the door 9 is closed.

On the other hand, when the door 9 is closed, the open / close state of the baffle 54 is determined in step S8,
When the baffle 4 is open, the process returns to the step S1, and the baffle 5
When the shutter 4 is closed, the baffle 54 is opened in step S9 and the process returns to step S1.

If the process has proceeded to the third processing system, step S10
Then, the control unit 73 sends a signal for stopping the operation of the compressor and the like to the cold air generator driver 74b, and the open / closed state of the door 9 is determined in step S11. If the door 9 is open, the process returns to step S1, and if the door 9 is closed, the baffle 54 is closed and the process returns to step S1.

[0040]

According to the present invention, when the door is open, the operation of the damper device is not performed, so that the operation sound of the damper device is prevented from sounding outside. In addition, the operation sound does not cause unnecessary anxiety to the user.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator having a damper device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a perspective view of a damper device.

FIG. 4 is a configuration diagram of a driving unit.

FIG. 5 is a block diagram of a control unit.

FIG. 6 is a flowchart of a control unit.

[Explanation of symbols]

 Reference Signs List 5 Refrigerator room 6 Freezer room 7 Vegetable room 12 Cooler 13 Fan 14 Cooling room 15 Ice temperature room 16 Cold air duct 18 Cold air supply passage for refrigerator 19 Damper 20 Damper rooms 23a, 23b Cold air supply passage for ice greenhouse 24 Cold air introduction passage 50 Damper Device 51 Passage opening / closing part 52 Closure plate 53 Opening part 54 Baffle 54 55 Rotating shaft 56 Drive part 59 Stepping motor 60 Gear 61 Stopper 70 Control means 71 Temperature detection part 72 Temperature setting part 73 Control part 73a CPU 73b Memory 74 Driver 74a Stepping Motor driver 74b Cold air generator driver 75 Door open / close detector

Claims (1)

[Claims] 1. A refrigerating compartment passage connecting a cold air generating means for generating cold air to a freezing compartment, and a refrigerating compartment passage connecting the cold air generating means and the refrigerating compartment, and provided in the middle of the refrigerating compartment passage. The baffle that opens the refrigerator compartment passage when blowing cool air to the refrigerator compartment, and closes the refrigerator compartment passage when stopping the blow of cool air to the refrigerator compartment, and a drive that operates the baffle. A door open / close detection unit for detecting opening / closing of a door of a refrigerator compartment; and determining whether the door is open / closed based on a signal from the door open / close detection unit. A control unit for controlling the drive unit to open and close the baffle only when the door is closed.