JPH0465312B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a refrigerator-freezer, and particularly relates to a refrigerator-freezer having a freezer compartment, a refrigerator compartment, and a constant temperature room provided in contact with the refrigerator compartment. .

[Background of the invention]

Conventional household refrigerator-freezers have a freezer compartment with a temperature of around -18°C, which is suitable for storing frozen foods, and a freezer compartment with a temperature of around -18°C, which is suitable for storing general foods because they do not freeze.
There are refrigerators that have a temperature of around -1 to 0 degrees Celsius, which are suitable for preserving sashimi and other foods whose taste, flavor, and freshness are particularly sensitive to temperature, just before they freeze. 58-51591).

Hereinafter, this type of refrigerator-freezer will be explained using the drawings.

FIG. 2 is a vertical cross-sectional view (this shows the − section in FIG. 3) of an example of a conventional refrigerator-freezer, which has a freezer compartment, a refrigerator compartment, and a constant temperature room. 4 is a sectional view of the main part of the − section in FIG. 2, FIG. 5 is an enlarged view of the part in FIG. 3, and FIG. 6 is a refrigerating compartment of the refrigerator-freezer according to FIG. 2. FIG. 2 is a temperature change diagram showing an example of a temporal change in temperature of a constant temperature room.

In the figure, 1 is a refrigerator-freezer consisting of a freezer compartment 2 for storing frozen foods, a refrigerator compartment 3 for storing general foods, and a constant temperature chamber 4 for storing sashimi and the like at a temperature just before freezing; 5 is a freezer. A box body that is the main body of the refrigerator 1, 7 a fan for circulating the air inside the refrigerator-freezer 1, 8 a fan motor for driving the fan 7, and 9 an evaporator for cooling the air inside the refrigerator-freezer 1. 10 is an outlet for blowing out the air cooled by the evaporator 9, 11 is a freezer compartment 2
12 is a refrigerator compartment return air passage for returning cooled air to the evaporator 9; 12 is a refrigerator compartment air passage for sending cooling air to the refrigerator compartment 3;
Reference numeral 13 denotes a refrigerator room return air passage for returning air from the refrigerator compartment 3 to the evaporator 9; 14 sends cold air for cooling the constant temperature chamber 4 to a cooling duct 15 provided outside the constant temperature chamber 4; 16 is a constant temperature room return air path for returning the air in the cooling duct 15 to the evaporator 9; 17 is a refrigerator room air passage for adjusting the amount of air to cool the refrigerator compartment 3; A damper for the refrigerator compartment provided in path 1, 18 a dial for changing the opening degree of the damper 17 for the refrigerator compartment, 19 a dial 1
8 is a shaft for transmitting the movement to the damper 17 for the cold storage room, 20 is a damper for the constant temperature room provided in the air passage 14 for the constant temperature room in order to adjust the amount of air to cool the constant temperature room 4, and 21 is for the constant temperature room. A dial for changing the opening degree of the damper 20, 22 is an axis for transmitting the movement of the dial 21 to the damper 20 for a constant temperature room, 6 is a sample of temperature settings for the cold room 3 and the constant temperature room 4 ("low temperature",
Panel 23 where "medium temperature" etc.) is written.
24 is the door of the refrigerator compartment 3, and 25 is the door of the constant temperature room 4. Note that parts of the refrigeration cycle such as a compressor and a condenser for cooling the evaporator 9 are omitted because they are complicated.

The usage conditions of the conventional refrigerator-freezer 1 having the above configuration, particularly the usage of the refrigerator compartment 3 and constant temperature room 4 related to the present invention, will be described.

Generally, when the refrigerator compartment 3 and constant temperature room 4 are used at standard temperatures, the dial 18 of the refrigerator compartment damper 17 and the dial 21 of the constant temperature room damper 20
Use at the standard "medium temperature" temperature. Then, the temperature of the refrigerator room 3 and constant temperature room 4 repeatedly changes as shown in part A in FIG. 6 over time, and each room is maintained at a standard temperature. However, in some cases, it may be desirable to lower the temperature of the refrigerator compartment 3 to quickly cool down the food in the refrigerator compartment 3. In such a case, by setting the dial 18 of the constant room damper 17 to "low temperature", the temperature of the refrigerator compartment 3 can be set to a lower temperature as expected, as shown in section B of FIG. 6. However, when viewed from the constant temperature room 4 side, when the temperature of the cold storage room 3 surrounding the constant temperature room 4 decreases, it is affected by the door 25 of the constant temperature room 4, etc., and the settings of the constant temperature room damper 20 are not changed as they are. When the temperature is set to "medium temperature", the temperature in the constant temperature chamber 4 falls contrary to expectations, as shown in part B of Figure 6.
In some cases, the food being stored in the constant temperature room 4 may freeze, leading to a decrease in quality.

[Purpose of the invention]

The present invention eliminates the drawbacks of the prior art described above and provides a refrigerator-freezer having a freezing compartment, a refrigerator compartment, and a constant temperature room provided in contact with the refrigerator compartment, in which the set temperature of the refrigerator compartment is changed. However, the object of the present invention is to provide a refrigerator-freezer in which the temperature change in the constant temperature room caused by this change is extremely small.

[Summary of the invention]

The structure of the refrigerator-freezer according to the present invention includes a freezer compartment, a refrigerator compartment, and a constant temperature room provided in contact with the refrigerator compartment, and cool air for cooling is passed through each of the refrigerator compartment air passages to the refrigerator compartment. , cooling both chambers of the constant temperature room, and changing the damper opening degree by moving the respective temperature setting devices of the cold room damper and the constant temperature room damper provided in the cold room air path, the constant temperature room air path, In the refrigerator-freezer, the temperature of both chambers can be adjusted by changing the flow rate of cold air for cooling, the damper lever for the refrigerator compartment fixed to the shaft of the damper for the refrigerator compartment, and the shaft of the damper for the constant temperature room. a connecting body that connects a damper lever for a constant temperature room that is rotatably fitted into the damper lever, a brake that brakes the damper lever for a cold storage room, and a brake that brakes a ring fixed to the shaft of the damper for a constant temperature room. The device is equipped with a temperature setting device connecting device comprising a brake element with a smaller braking force than the temperature setting device.

[Embodiments of the invention]

The principle of the present invention focuses on the fact that a constant temperature room is affected by changes in the temperature of a cold storage room that is in contact with it, and allows the cooling capacity of the constant temperature room to be changed depending on the set temperature of the cold storage room. It is composed of

Hereinafter, the present invention will be explained with reference to Examples.

FIG. 1 is a sectional view (corresponding to FIG. 4) showing the area around the temperature setting device connection device of a refrigerator-freezer according to an embodiment of the present invention, and FIG.
The arrow view, Figure 8 is the - arrow view of Figure 1, Figure 9.
The figure is a sectional view taken along the - arrow in FIG. 1.

The configuration of this refrigerator-freezer is the same as that of the refrigerator-freezer shown in FIG. 2 described above, except for the area around the temperature setting device connecting device shown in FIG.

In FIG. 1, reference numeral 26 is a refrigerating compartment damper provided in the refrigerating compartment air passage 12 for adjusting the flow rate of cold air for cooling the refrigerating compartment 3, and 27 is a damper opening degree of the refrigerating compartment damper 26. A dial related to the temperature setting device for changing the temperature, 28 is a shaft for transmitting the movement of the dial 27 to the damper 26 for the refrigerator compartment,
32 is a constant temperature room damper for adjusting the flow rate of cold air for cooling the constant temperature room 4 provided in the constant temperature room air path 14, and 33 is a temperature setting device for changing the damper opening degree of the constant temperature room damper 32. The dial 34 is a shaft for transmitting the movement of the dial 33 or ring 36 (details will be described later) to the constant room damper 32.

Reference numeral 39 denotes a connecting rod relating to a connecting body that connects the damper lever 29 for the cold storage room fixed to the shaft 28 of the damper 26 for the cold storage room and the damper lever 35 for the constant temperature room rotatably fitted into the shaft 34 of the damper 32 for the constant temperature room. 31, and a damper lever 29 for the refrigerator compartment, which is related to a brake that brakes the damper lever 29 for the refrigerator compartment.
Refrigerator damper pressing spring 3 that presses against the outer periphery of
0, and brakes a ring 36 fixed to a shaft 34, which is a corrector that corrects the opening degree of the constant room damper 32 according to the setting of the refrigerator damper lever 29.
This is a temperature setting coupling device consisting of a ring pressing spring 37 related to a brake whose braking force is smaller than that of the brake.

The temperature setting device connecting device 39 will be explained in more detail as follows.

Reference numeral 29 is a refrigerating room damper lever fixed to the shaft 28 and for transmitting the movement of the refrigerating room damper 26 to the constant room damper 32. Reference numeral 30 denotes a refrigerating compartment damper pressing spring for pressing the outer circumference of the refrigerating compartment damper lever 29 with an appropriate force and fixing the refrigerating compartment damper 26 with appropriate resistance; In order to transmit the movement to the constant temperature room damper 32, a cold room damper lever 29 and a constant temperature room damper lever 35 are used.
(Details will be described later) Connecting rod related to the connecting body, 36
35 is a ring fixed to the shaft 34, and 35 is rotatably fitted into the shaft 34, and the movement of the connecting rod 31 is controlled via a ring pressing spring 37 which presses down the ring 36 with appropriate strength. A damper lever for a constant temperature room 32 has a marking 38a written on it indicating the temperature setting of the refrigerator compartment 3, and is cut out so that a marking 35c of the temperature setting of the constant room 4 written on the damper lever 35 for a constant temperature room can be seen. This is the panel with hole 38b cut out.

Note that the pressing force of the ring pressing spring 37 is sufficient to transmit the rotation to the ring 36 when the constant temperature damper lever 35 is rotated by the connecting rod 31; If the refrigerator compartment damper lever 29 and spring 3
0, the braking force is set to have enough pressing force to cause the ring 36 and the spring 37 to slip.

The method of using the refrigerator-freezer of the present embodiment configured as described above will be explained, focusing on the case where the temperature setting of the refrigerator compartment 3 is changed midway through, in particular, where the effects of the present invention appear.

FIG. 10 is a temperature change diagram showing an example of temporal changes in temperature of the refrigerator compartment and constant temperature room of the refrigerator-freezer according to FIG. 1, and FIG. 11 is a diagram showing one usage state of the refrigerator-freezer according to FIG. 1. Figure 1 - arrow view, 1st
FIG. 2 is a view taken along the - arrow in FIG. 1, showing another state of use.

First, as an example, as shown in FIG. 7, it is assumed that both the refrigerating room 3 and the constant temperature room 4 are set to a standard "medium temperature". Then, cool air is sent into the refrigerator compartment 3 from the refrigerator compartment air passage 12 at an appropriately regulated air volume by the refrigerator damper 26, and into the constant temperature room 4 by the constant temperature damper 32. Cool air with an appropriately regulated air volume is sent from the constant temperature room air passage 14, and
As shown in part A in Figure 0, both chambers are maintained at an appropriate temperature.

Then, in order to lower the temperature setting of the refrigerator compartment 3 depending on the type of food or usage conditions, turn the dial 27 in the direction of rotation 27a in FIG. match. Then, the damper 26 for the refrigerator compartment rotates in the direction of the rotation direction 26a in FIG. decreases as shown in section B of FIG.

At the same time, the cold storage damper lever 29 fixed to the shaft 28 rotates in the direction of rotation 29a in FIG. 8, and the constant room damper lever 35 is rotated by the connecting rod 31 in the direction 35a. Then, the ring 36 pressed by the ring pressing spring 37 fixed to the constant room damper lever 35 rotates.
The shaft 34 fixing the ring 36 is rotated, and the constant temperature room damper 32 is rotated in the direction of rotation 32a in FIG. 9. As a result, the ventilation resistance of the constant temperature room air passage 14 increases, the air volume for cooling the constant temperature room 4 decreases, the cooling power of the constant temperature room 4 decreases, and the temperature of the cooling chamber 4 does not drop too much. As expected, the temperature in the refrigerator compartment 3 became low, as shown in part B of Figure 10.
The temperature of the constant temperature room 4 can be maintained at a standard temperature.

FIG. 11 is a diagram corresponding to FIG. 7 after the above operation, in which the dial 27 points to "low" on the indicator 38a, and the temperature setting indicator for the constant room 4 is located in the notch hole 38b. However, the dial 33 points to "middle", indicating that the temperature of the constant temperature room 4 is standard.

In such usage conditions, if the temperature of the constant temperature chamber 4 is also set to a low value, turn the dial 35 so that it points to "low" as shown in FIG. 12. Then ring 3
The refrigerator damper lever 29, which is pressed by the refrigerator damper pressing spring 30 with a force stronger than the ring pressing spring 37 holding down the refrigerator compartment damper lever 29, does not rotate and slips between the ring 36 and the ring pressing spring 37. , only the constant temperature room damper 32 rotates in the rotation direction 32b in FIG. 9, the ventilation resistance of the constant temperature room air passage 14 decreases, and the cooling air volume to the constant temperature room 4 increases
The temperature in constant room 4 becomes lower and meets expectations.

According to the embodiment described above, when the dial 27 of the refrigerator compartment damper 26 is rotated to change the set temperature of the refrigerator compartment 3, the cooling capacity of the constant temperature room 4 can be automatically adjusted according to the set temperature. As a result, when the set temperature of the refrigerator compartment 3 is changed, the temperature of the constant temperature room 4 does not deviate unexpectedly, making it possible to provide an easy-to-use refrigerator-freezer that can be used with peace of mind. .

Next, another embodiment will be described.

Connection device 39 for temperature setting device in the above embodiment
The configuration is such that when the temperature setting of the refrigerator compartment 3 is changed without changing the temperature setting of the constant temperature room 4, the damper 26 for the refrigerator compartment and the damper 32 for the constant temperature room rotate in the same direction. Next, an embodiment will be described in which it is desired to reverse the rotation directions of the two due to design or structural constraints.

Figures 13 to 15 are for explaining a refrigerator-freezer according to another embodiment of the present invention, and Figures 13, 14, and 15 are diagrams 7, 8, and 9 of the aforementioned embodiment, respectively. This is a diagram corresponding to .

This embodiment is similar to the connecting rod 31 (the eighth
A flexible wire tube 41 is used instead of the one shown in FIG. 14 to connect the damper lever 29 for the refrigerating room and the damper lever 35 for the constant temperature room vertically, as shown in FIG. By doing this, when it is desired to lower the temperature of the refrigerator compartment 3 as in the above embodiment,
By turning the dial 27 in FIG. 13 in the direction 27a, the damper lever 29 for the cold storage room in FIG. The damper 26 for the cold storage room in the figure rotates in the direction 26a, and the damper 32 for the constant temperature room rotates in the direction 32b.
The air volume to the constant temperature room 4 increases, the air volume to the constant temperature room 4 decreases, the temperature of the refrigerator compartment 3 becomes lower as expected, and the temperature of the constant temperature room 4 can be maintained at the standard temperature.

In the above embodiments, in order to clarify the essence of the present invention, a manually operated damper structure was described. It can also be applied to temperature control devices for refrigerators that use a method to adjust the damper opening (details will be described later) or a method that uses a thermistor or the like to detect the temperature of the refrigerator compartment 3 and adjust the damper opening. .

Hereinafter, an embodiment in which the present invention is applied to a temperature control device for a refrigerator compartment having a structure that maintains the temperature of the refrigerator compartment 3 at a set temperature by utilizing changes in the pressure of the gas sealed in the bellows described above will be briefly explained with reference to the drawings. state

FIG. 16 is a sectional view showing the main parts of a refrigerator-freezer according to still another embodiment of the present invention.

In FIG. 16, the same numbers as in FIGS. 1, 7, 8, and 9 represent parts having the same functions. 42 is a heat-sensitive tube for detecting the temperature of the refrigerator compartment 3; 43 is an extendable bellow connected to this heat-sensitive tube 42; and 44 is this bellow 43.
A support plate with one end fixed; 45 is a shaft rotatably attached to the support plate 44 by a threaded portion 28a so as to be rotatable by the other end of the bellows 43 and a spring 46; 40 is a shaft that is rotatably attached to the support plate 44; 29 is the shaft 2 for transmitting the information to the damper 26 for the refrigerator compartment.
The damper lever for the refrigerator compartment fixed to 8A is shown.

With this configuration, similar to the manual damper described above, for example, when the dial 27 that was set to "medium temperature" is turned to "low temperature",
The threaded portion 28a moves the shaft 28A in the direction of the dial 27 (in the direction of 28b), the pressing force of the spring 46 decreases, and the gas pressure inside the bellows 43 causes the thermolever 45 to rotate toward the spring 46, and the refrigerator compartment The damper 26 rotates in the direction 26a, and the cold room air passage 1
2 increases, and the temperature of the refrigerator compartment 3 decreases.
Then, the temperature of the refrigerator compartment 3 is detected by the heat-sensitive cylinder 42, and this is fed back to the movement of the refrigerator compartment damper 26 by pressure changes in the bellows 43, so that the temperature of the refrigerator compartment 3 becomes the set temperature of "low temperature". do. At this time, the operation of the temperature setting device connecting device transmitted by the connecting rod 31 is the same as that of the manual type described above, and will therefore be omitted.

In addition, in each of the above embodiments, a cooling duct 15 is provided around the constant temperature room 4, and the cold air for cooling from the constant temperature room air passage 14 is flowed into this cooling duct 15, thereby indirectly cooling the constant temperature room 4. This is applied to a refrigerator-freezer with a duct type configuration (this is called a duct type), but it is difficult to install a cooling duct 15 due to space or cost reasons. The present invention can also be applied to a refrigerator-freezer having a configuration in which the temperature of the constant temperature chamber 4 is controlled by blowing cold air directly into the constant temperature chamber 4 (this is called a direct cooling type).

Further, in each of the above embodiments, the springs 30 and 37 are used as brakes for damping the refrigerator compartment damper lever 29 and the ring 36, but magnets may be used instead of the springs.

〔Effect of the invention〕

As explained in detail above, according to the present invention, in a refrigerator-freezer having a freezing compartment, a refrigerator compartment, and a constant temperature room provided in contact with the refrigerator compartment, even when the set temperature of the refrigerator compartment is changed, , it is possible to provide a refrigerator-freezer in which the temperature change in the constant room caused by this is extremely small.

[Brief explanation of the drawing]

FIG. 1 is a sectional view (corresponding to FIG. 4 described later) showing the vicinity of a connecting device for a temperature setting device of a refrigerator-freezer according to an embodiment of the present invention, and FIG.
A vertical cross-sectional view showing an example of a conventional freezing/refrigerating room having a cold storage room and a constant temperature room (this shows the − cross section in FIG. 3), FIG. 3 is a schematic diagram of the − cross section in FIG. 2,
Figure 4 is a sectional view of the main part of the − section in Figure 2, and
The figure is an enlarged view of the part in Fig. 3, and Fig. 6 is an enlarged view of the part in Fig. 2.
Temperature change diagrams showing an example of temporal changes in temperature of the refrigerator compartment and constant temperature room of the refrigerator-freezer according to the figure, FIG. 7 is a view taken in the direction of the − arrow in FIG. 1, and FIG.
FIG. 9 is a sectional view taken along the - arrow in FIG. 11 is a view taken along the - arrow in FIG. 1, showing one usage state of the refrigerator-freezer according to FIG. 1; FIG. 12 is a view taken along the - arrow in FIG. 1, showing another usage state; FIGS. FIG. 15 is for explaining a refrigerator-freezer according to another embodiment of the present invention.
Figures 4 and 15 are 7th, 8th, and 9th, respectively, of the above embodiment.
FIG. 16, which corresponds to the figure, is a sectional view showing the main parts of a refrigerator-freezer according to still another embodiment of the present invention. 2... Freezer room, 3... Refrigerator room, 4... Constant temperature room,
12... Air duct for cold room, 14... Air duct for constant temperature room,
26...Damper for refrigerator compartment, 27...Dial,
28...Shaft, 29...Damper lever for refrigerator compartment,
30...Damper presser spring for refrigerator room, 31...Connecting rod, 32...Damper for constant temperature room, 33...Dial, 34...Shaft, 35...Damper lever for constant temperature room, 36...Ring, 37... ... Ring pressing spring, 39 ... Connection device for temperature setting device, 41 ... Flexible wire tube.

Claims (1)

[Claims] 1 It has a freezer compartment, a refrigerator compartment, and a constant temperature room provided in contact with the refrigerator compartment, and cool air for cooling is passed through the refrigerator compartment air path and the constant temperature room air path, respectively, to cool the cold room and the constant temperature room. cooling both chambers, the refrigerator compartment air passage;
By moving the temperature setting devices of the cold room damper and the constant temperature room damper installed in the constant room air passage to change the damper opening degree and change the flow rate of cold air for cooling, the temperature of the two rooms can be adjusted. In a refrigerator-freezer that can be adjusted, a damper lever for a cold room to adjust the opening degree of a damper for the cold room and a damper lever for a constant temperature room to adjust the opening degree of a damper for a constant temperature room are connected. a connecting body for a temperature setting device, a brake that brakes the damper lever for the refrigerator compartment, and a brake that has a smaller braking force than the brake that brakes the corrector of the damper for the constant temperature room. A refrigerator-freezer that is characterized by its unique features.