JPH079021Y2 - refrigerator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a refrigerator for controlling a temperature of a room by controlling a supply amount of cold air for cooling the room.

2. Description of the Related Art A recent refrigerator is provided with a freezing room and a refrigerating room, and the refrigerating room is divided into, for example, two, one is a normal refrigerating room and the other is a partial room for storing fish meat for a long term freshly. Is increasing. On the other hand, in many refrigerators, a control device including an electronic circuit is adopted to precisely control the temperature of the room and adjust the temperature from the outside of the door. Therefore, two electric dampers driven by separate motors and solenoids are required for the refrigerating compartment and the partial compartment.

Therefore, in order to reduce the cost, an electric damper having a specification in which one motor controls two opening / closing members has been devised.

A conventional example will be described below with reference to FIGS. 4 to 13.

1 is a refrigerator main body, 2 is an outer box, 3 is an inner box, and 4 is a heat insulating material. 5 is a freezing room, 6 is a refrigerating room, and 7 is a cooling room. The cooling chamber 7 has a cooler 8 and a fan 9 for blowing cool air to the freezing chamber 5 and the refrigerating chamber 6. A duct 10 is provided between the freezing compartment 5 and the refrigerating compartment 6, through which cold air flows to both compartments. Further, the outlet of the duct of the refrigerating compartment is 13, and an opening / closing member 15 for adjusting the inflow amount of cold air into the refrigerating compartment 6 is provided in this portion based on the temperature of the thermistor 16 for the refrigerating compartment. Reference numeral 18 is a duct through which the air in the refrigerating compartment 6 returns to the cooling compartment 7. 96 is a compressor. 11 is a low temperature room, 12 is a duct to the refrigerator room 10
It is the outlet of the low temperature room duct that is partly separated from. An opening / closing member 14 that adjusts the amount of cold air flowing into the low temperature chamber 11 based on the temperature of the thermistor 17 for the low temperature chamber is a duct for returning the air in the low temperature chamber 11 to the cooling chamber 7.

Duct outlet 12 of the refrigerator compartment 6 and duct outlet of the low temperature compartment 11
There is an electric damper 20 having two opening / closing members 14 and 15 integrally provided in 13. Reference numeral 21 is a motor that drives the two opening / closing members 14 and 15, 22 is a gear box that reduces the rotation of the motor and converts it into linear motion, and 23 is two opening / closing members 14 and 15.
It is a spindle for pushing open.

Reference numerals 25 and 26 are leaf springs that apply a closing force to the two opening / closing members 14 and 15.

The rotation of the motor 21 is output by the output pinion 27, and the gear 2
Cam for spindle 23 of opening / closing member 14 decelerated by 8,29
It is transmitted to the cam 30, and then to the cam 31 for the spindle 24 of the opening / closing member 15. Reference numeral 33 is a magnet lever 34, and the lead 34 is opened and closed by the magnet 34. 36 is a leaf spring for separating the lead SW 35 and the magnet 34.

32 is a magnet formed integrally with the cam for the spindle 34
This is a cam to move the 34 close to or away from the lead SW35.

The movement of the spindle cams 30, 31 will be described with reference to FIG. Here's a cam for the spindle for clarity
The cam 31 and the magnet lever cam 32 are not integrated cams but separate cams. The spindle cams 30 and 31 are the parts with a high cam height of about 90 °, and the parts with a low cam height of about 90 ° on the opposite side of 180 ° .The other parts are the ascending and descending slope parts. Made by. The spindle cams 30 and 31 are provided with a phase difference. Further, spindles 23 and 24 are provided at both ends of the spindle cams 30 and 31 to open and close the opening and closing members 14 and 15. Therefore, every time the spindle cams 30, 31 rotate 90 °, the open / close motes of the open / close members 14, 15 change from closed to open / closed / open / open / closed / closed / closed, and the lead SW35 also opens / closed accordingly. The operation of closing → opening is performed. Stopping the motor In order to obtain the open / close mode of the opening / closing members 14 and 15, the motor is stopped when the lead SW is changed from ON to OFF and after a count of ₁ second. In order to obtain the open / close mode of the open / close members 14 and 15, the motor is stopped at the time when T ₂ seconds are counted from the time when the lead SW is changed from ON to OFF. Also, to obtain the open / close mode of the open / close members 14 and 15, open the lead switch.
The motor stops when T ₃ seconds are counted from when the changes from OFF to ON. To obtain the closed / open mode of the opening / closing members 14 and 15, stop the motor at the time point when T ₄ seconds are counted from the time point when the lead SW changes from OFF to ON. By controlling as described above, the opening / closing members 14 and 15 can obtain four opening / closing modes.

Next, a control circuit diagram of the electric damper 20 will be described with reference to FIG.

16 is a thermistor for a refrigerator, and 17 is a thermistor for a partial room. 37 is a comparator that determines whether the temperature of the refrigerator compartment thermistor 16 is higher or lower than the set temperature, and 38 is a comparator that determines whether the temperature of the partial chamber thermistor 17 is higher or lower than the set temperature. Is. Set temperature in the refrigerator compartment is 4
The potential divided by the resistors 0, 41 is determined by the potential divided by the refrigerator compartment thermistor 16 and the resistor 39.
Depending on whether it is higher or lower than the potential divided by the resistors 0 and 41, an L signal is input to the microcomputer 47 from the comparator or H
A signal is input. 44 and 45 are resistors that determine the set temperature of the partial chamber, and a comparator is used depending on whether the voltage divided by the resistor 43 and the partial chamber thermistor is higher or lower than the potential divided by the resistors 44 and 45. Then, the L signal or the H signal is input to the microcomputer 47.

42 and 46 are return resistances for obtaining the differential of temperature control. Reference numeral 35 is a lead SW built in the electric damper 20, and reference numeral 80 is a drive IC for driving a power relay 81 for controlling energization of the motor 21 of the electric damper 20.

First, the microcomputer judges whether the temperature of the refrigerating chamber 6 is higher or lower than the set temperature by the driving IC 80, and whether the temperature of the partial chamber 11 is lower than the set temperature in the power relay steps 81 and 52. To judge. For example, when both the temperature of the refrigerating room 6 and the temperature of the partial room 11 are higher than the set temperature, the state of the lead SW in step 53 is judged. If the state of the read SW is OFF, the SW memory 0 of RAM in the microcomputer is set to OFF at step 58, and the motor is turned on. On the other hand, if the read SW is judged in step 53,
If it is ON, then check if SW memory 0 in RAM is ON.
Judgment in 4 and if it is ON, switch SW memory 0 of RAM in step 55.
Set to ON and the motor is ON. SW in step 54
If the memory 0 is set to OFF, the timer is counted in step 56, and it is determined in step 57 whether T ₃ seconds has elapsed. If not, the motor remains in the ON state. To the OFF state. As described above, when the temperature of the refrigerating chamber 6 is high and the temperature of the partial chamber 11 is also high, it is necessary to close both the opening / closing members 14 and 15. Then, the motor is stopped after a lapse of T ₃ seconds from when the lead SW is changed from OFF to ON, and the motor is stopped when both the opening / closing members 14 and 15 are open.

Next, when the temperature of the refrigerating room 6 is higher than the set temperature and the temperature of the partial room 11 is lower than the set temperature, the program of steps 61 to 66 of the flow chart is executed and the motor is read.
Since the motor stops by counting the T ₂ second timer from the time when the SW turns from ON to OFF, the opening / closing member 14 for the refrigerating compartment 6 is open, and the opening / closing member 15 for the partial compartment 11 is closed, and the motor stops. To do.

Next, when the temperature of the refrigerating chamber 6 is low and the temperature of the partial chamber 11 is lower than the set temperature, steps 67 to 71 of the flowchart.
Program, the lead SW of the motor is turned from ON to OFF
Since the T ₁ second timer is counted and stopped from the time when the state is reached, the opening / closing member 14 for the refrigerating room 6 and the partial room 11
The motor is stopped when both the opening / closing member 15 for use are closed.

If the temperature of the refrigerating compartment 6 is low and the temperature of the partial compartment 11 is higher than the set temperature, the program of 74 to 78 in the flow chart is performed, and the motor starts the T ₄ second timer from the time when the lead SW changes from OFF to ON. Since it counts and stops, the opening / closing member 14 for the refrigerating compartment 6 is in the open state, and the partial compartment 11
The opening / closing member 15 is opened and the motor stops.

With the above flow chart, the operation of the two opening / closing members can be performed according to the temperatures of the two thermistors.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned configuration, since the positions of the plurality of spindles cannot be moved far apart, the positional relationship between the plurality of opening / closing members is limited, and the plurality of chambers may be sufficiently separated. I could not do it, cold air from each room entered
There was a problem that the temperature of a plurality of chambers could not be controlled independently.

The present invention solves the above-mentioned problems by completely separating the air passages of each of the plurality of chambers, preventing the entry of cold air into each of the chambers, and controlling the plurality of chambers independently of each other. Has an aim.

Means for Solving the Problems In order to solve the above-mentioned problems, the refrigerator of the present invention is provided with one or more ribs integrally with a damper body supporting the opening / closing members between the opening / closing members. It is designed to insert a heat insulating material that partitions a plurality of chambers.

Function The present invention has the above-mentioned configuration, and by a single motor,
In a device that drives a plurality of opening / closing members and controls the amount of cold air flowing into a plurality of chambers, one or a plurality of ribs formed integrally with the damper body is provided, and a heat insulating material that partitions the plurality of chambers is provided between the ribs. By inserting, it is possible to completely separate the plurality of chambers, and the cold air does not enter the chambers.

Embodiment A refrigerator according to an embodiment of the present invention will be described with reference to FIGS.
Although the description will be made with reference to the drawings, the same configurations as those in the related art will be assigned the same reference numerals and detailed description thereof will be omitted.

89 is a main body of the electric damper, 14 and 15 are two opening / closing members attached to the main body 89, and 21 is two opening / closing members 1
A motor for supplying an opening force to 4, 15 and a gear box 22 for reducing the rotation of the motor 21. Reference numerals 25 and 26 are leaf springs that apply a closing force to the opening / closing members 14 and 15. Further, two ribs 90, 91 are integrally formed between the two opening / closing members 14, 15 of the main body 89.

Reference numeral 11 is a low temperature room provided above the refrigerating room. Also 92,9
3 is a heat insulating material in which the electric damper 20 is housed. This insulation 9
Two opening / closing members 14 and 15 are separated by 2,93 to form an air passage for guiding cold air to the refrigerating chamber 6 and the low temperature chamber 11. FIG. 3 shows two opening / closing members 1 of the heat insulating materials 92 and 93 in which the electric damper 20 is housed.
The sectional view of the part which isolate | separated 4,15 is shown. A part of the heat insulating material 92 is inserted between the two ribs 90, 91 integrally formed with the electric damper body 89.

With the above configuration, the main body 89 is provided between the two opening / closing members 14 and 15.
Electric damper 2 between two ribs 90 and 91 formed integrally with
By inserting a part of the heat insulating material 92 containing 0, the air passage of the refrigerating chamber 6 and the air passage of the partial chamber 11 can be completely separated. The refrigerating compartment 6 and the partial compartment 11 can be controlled completely independently of each other.

As described above, according to the present invention, a plurality of opening / closing members, a single motor for driving the opening / closing members, a position detecting device for detecting the rotational position of the motor, and a plurality of indoor temperature-based And a controller for setting an operating time of the motor, wherein one or more ribs are integrally provided between the plurality of opening / closing members and a main body supporting the opening / closing members, and a plurality of chambers are partitioned between the ribs. By inserting the heat insulating material, the air passages of each of the plurality of chambers can be completely separated. For this reason, since the cold air does not enter the mutual chambers, the temperature of the plural chambers can be controlled completely independently.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric damper of a refrigerator according to an embodiment of the present invention, FIG. 2 is a sectional view of an air passage in a refrigerating room, and FIG. 4 is a cross-sectional view of a refrigerator centering on an opening / closing member of a conventional refrigerating room, FIG. 5 is a cross-sectional view of a refrigerator centering on an opening / closing member of a low temperature room, and FIG. 6 is an electric motor. Cross-sectional view of the damper, Fig. 7 is a front view of the electric damper, and Fig. 8 is a gear.
Front view of the BOX, Fig. 9 is a sectional view of the gear BOX, and Fig. 10 is the gear.
Fig. 11 is a schematic sectional view for explaining the operation showing the movement of the cam in the BOX. Fig. 11 is a time chart for controlling the electric damper.
FIG. 12 is a control circuit diagram of the electric damper, and FIG. 13 is a flow chart of microcomputer software. 14,15 …… Opening / closing member, 21 …… Motor, 90,91 …… Rib, 92
…… Insulation material.

Claims (1)

[Scope of utility model registration request] 1. A plurality of chambers formed in a storage chamber, a plurality of opening / closing members for controlling respective amounts of cold air for cooling the chambers, a single motor for driving the opening / closing members, and a motor for the motors. A position detection device that detects a rotational position and a control device that sets the operating time of the motor based on the temperatures of a plurality of rooms are provided. A refrigerator characterized in that one or more ribs are provided and a heat insulating material for partitioning a plurality of chambers is inserted between the ribs.