JPH0442593B2 - - 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 freezer compartment,
The present invention relates to a refrigerator-freezer having 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 at around -18°C, which is suitable for storing frozen foods, and a freezer compartment at around 1-5°C, which is suitable for storing general foods without freezing.
The temperature just before freezing is approximately 0 to -5 degrees Celsius, which is suitable for long-term storage of fish, meat, etc. whose taste, flavor, and freshness are particularly sensitive to temperature.
There are some that have constant temperature chambers to maintain the temperature at a certain level (Japanese Utility Model Publication No. 18927-1980, Publication of Japanese Utility Model Publication No. 16967-1982, Japanese Patent Publication No. 18582-1982).

In this type of refrigerator-freezer, when the outside temperature is low or the temperature set in the refrigerator compartment by the temperature control device is high, the damper of the temperature control device closes because the heat leakage inside the refrigerator compartment is extremely small. The cold air may remain in the refrigerator for a long time, and very little cold air may be discharged into the refrigerator compartment. For this reason, the temperature of the constant temperature room provided in the upper part of the refrigerator compartment, which is relatively high in temperature, becomes higher than the temperature of the middle part of the refrigerator compartment. On the contrary, if the outside air temperature is high or the temperature set in the refrigerator compartment by the temperature control device is low, the heat leakage in the refrigerator compartment will be extremely large, and the damper of the temperature control device will be in the open state. This results in a large amount of cold air being discharged into the refrigerator compartment. For this reason, a correspondingly large amount of cold air is supplied into the constant temperature chamber, and the temperature becomes lower than the optimum temperature of the constant temperature chamber, thereby maintaining the temperature distribution in the uniform freezing temperature range that is inherent in the constant temperature chamber. The problem was that it became difficult.

[Purpose of the invention]

The present invention improves the problems of the prior art described above, and provides a refrigerator-freezer that has a constant temperature chamber where the temperature changes little even if the set temperature of the temperature control device is changed.
That is the purpose.

[Summary of the invention]

The structure of the refrigerator-freezer according to the first invention includes a freezing compartment, a refrigerating compartment, and a constant temperature room provided in contact with the refrigerating compartment, and the set temperature of the refrigerating compartment is set from high to medium.
The damper opening degree of the damper provided at the cold air inlet of the cold air blowing path for the cold storage room that guides the cold air to the cold storage room is changed accordingly. In a refrigerator-freezer equipped with a temperature control device that controls the temperature of the refrigerator compartment by controlling the flow rate of the refrigerator compartment, the branch air passage for the refrigerator compartment extends from the cold air inlet of the refrigerator compartment cold air blowing passage to the outlet for the refrigerator compartment. and a branch air path for a constant temperature room from the cold air inlet to the air outlet for the constant temperature room, and when the set temperature of the temperature control device is set to the medium setting, it is located at the midpoint of the entire sliding stroke, and the set temperature is When set to the strong side, the entrance of the branch air passage for the refrigerator compartment is opened further than the intermediate point, and the entrance of the branch air passage for the constant temperature room is further closed, and when the set temperature is set to the weak side, An opening/closing device having a blade capable of further closing the entrance of the branch air passage for a cold storage room than the intermediate point and further opening the entrance of the branch air passage for a constant temperature room. It is.

Further, the configuration of the refrigerator-freezer according to the second invention is as follows:
It has a freezer compartment, a refrigerator compartment, and a constant temperature room installed in contact with the refrigerator compartment, and the temperature of the refrigerator compartment can be set at any position between high, medium, and low. The temperature of the refrigerator compartment is controlled by controlling the flow rate of the air passage by changing the damper opening degree of a damper provided at the cold air inlet of the refrigerator compartment cold air blowing passage that guides cold air for cooling to the refrigerator compartment. In a refrigerator-freezer equipped with a temperature control device that performs from the cold air inlet, which is configured to have a longer air path than the branch air path for the refrigerator compartment, and to have greater air resistance than the branch air path for the refrigerator compartment so that the flow rate is restricted. The branch air passage for the constant temperature room leading to the air outlet and the set temperature are each set to high.
The opening/closing device is provided with a blade that can substantially fully open, substantially fully close, or substantially half open the inlet of the branch air passage for the refrigerator compartment when the setting is weak or medium.

More details are as follows.

In a refrigerator-freezer having at least a freezer compartment, a refrigerator compartment, a constant temperature room, and a cooling device consisting of a cooler and a cold air circulation device, a cold air inlet of a cold air ventilation path of the refrigerator room through which cold air discharged from the cold air circulation device flows. A temperature control device is provided to control the amount of cold air by a damper that opens and closes at the temperature control device, and the air path is branched through this temperature control device to one of the branched air paths, that is, the constant temperature room that communicates with the branch air path for the constant temperature room. The temperature control device and both of the branch air paths are connected to an insulating case, the temperature control device and both of the branch air paths being provided with an air outlet for a constant temperature room that blows out cold air, and a refrigerator room air outlet that is connected to the other branch air path, that is, the branch air path for a refrigerator room. The set temperature of the temperature control device can be set between low (approx. 5℃) and medium (approx. 3℃) using the dial.
℃), strong (about 0℃), and consists of a cam connected to the dial, a cam roller shaft that slides in the cam groove, and a blade that slides back and forth in connection with the cam roller shaft. A switching device is provided, and the switching device controls the temperature setting of the temperature control device so that the cross-sectional area when each of the branch air paths is closed by the blades is an appropriate proportion of the cross-sectional area when fully open. The temperature of the temperature controlled room is controlled at 0 to -5°C.

[Embodiments of the invention]

Examples will be explained below.

FIG. 1 is a cross-sectional view of a refrigerator-freezer according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view showing details of the vicinity of the constant temperature chamber in FIG. 1, and FIG. 2 is a sectional view taken along A-A', FIG. 4 is an enlarged sectional view showing details of the heat-insulating case housing the temperature control device and the switchgear, and FIGS. 5 and 6 are taken along BB-B in FIG. 4. FIG. 5 is a cross-sectional view when the set temperature of the temperature control device is set to high, and FIG. 6 is a cross-sectional view.
7 is a plan view showing the details of the cam in FIG. 4, and FIG. 8 shows the cooling performance of the refrigerator-freezer shown in FIG. 1 compared to that of a conventional refrigerator-freezer. It is a cooling performance diagram shown for comparison.

In the figure, 1 is a freezer compartment 2 for storing frozen foods, a refrigerator compartment 3 for storing general foods,
In order to maintain and preserve fish, meat, etc. at a temperature just before freezing, the indoor temperature is lower than the refrigeration room temperature.
A refrigerator-freezer, 5, which has a constant temperature room 4 that is maintained higher than the freezing room temperature and is provided in contact with the refrigerator compartment 3;
is a box that is the main body of the refrigerator-freezer 1; 6 is a partition that divides the internal volume of the box 5 into a freezing compartment 2 and a refrigerator compartment 3; and 7 is a partition for circulating air within the refrigerator-freezer 1. 8 is a case that partitions a constant temperature room 4 provided in contact with the refrigerator compartment 3; 9 is a cooler for cooling the air inside the refrigerator-freezer 1;
0 is an air outlet for blowing out cooling air (hereinafter referred to as cold air), which is the air cooled by the cooler 9, to the freezer compartment 2; 11 is an outlet for blowing the cold air that has cooled the freezer compartment 2 to the cooler 9; Freezer compartment return air passage for returning to
12a is a cold air inlet for guiding cold air to the refrigerator compartment 3 and constant temperature room 4; 13 is a cooling air passage for cooling the refrigerator compartment 3; A refrigerating room return air path 15 for returning the cold air whose temperature has risen to a certain extent to the cooler 9 is a damper provided in the cold air inlet 12a so as to be openable and closable.
Reference numerals 30a and 30b are constant temperature room branch air paths formed of a heat insulating material and symmetrical with respect to the cold air introduction port 12a, leading from the cold air introduction port 12a to the constant temperature air outlet 14, and the air is introduced via the damper 15. The cold air is divided into these branch air channels 30a and 30b for constant temperature rooms.
The air is blown through the constant temperature room 4 to cool the room.
Moreover, 31a and 31b are the cold air inlet 12a leading from the cold air inlet 12a to the refrigerator compartment air outlet 17.
The remaining cold air introduced via the damper 15 is symmetrically formed with the refrigerator compartment air passages 31a, 31a,
It is blown out to the refrigerator compartment 3 through 31b and cools the refrigerator compartment 3. 16, by rotating the dial 18, you can set the temperature to low (about 5 degrees Celsius), medium (about 3 degrees Celsius), or high (about 0 degrees Celsius), and the temperature in the refrigerator compartment 3
When the temperature is detected and the temperature deviates from the set temperature, the damper arm 1 displaces in proportion to the amount of deviation.
a temperature control device for controlling the temperature by opening and closing the damper 15 via the damper 5a and controlling the flow rate of cold air;
8 is integrated with the dial 18, and has a concave groove 28a on the opposite side to the side where the dial 18 is attached.
(The shape of the groove 28a will be described later), 29 has a cam roller shaft 29a that fits into the groove 28a of this cam 28 and slides, and a cam roller shaft 29 that is integrated with this cam roller shaft 29a.
A sliding shaft 29 that guides the vertical linear movement of a.
The sliding devices 32a, 32b are fixed to the tips of the arms 29d, 29e of the sliding device 29, and are made up of arms 29d, 29e provided at symmetrical positions with respect to the cam roller shaft 29a.
By driving the cam 28 by the rotation of 8, the branch air passages 31a and 31b for the cold room and the branch air passage 3 for the constant temperature room are opened.
It is a blade that adjusts the opening degree of the inlet of 0a and 30b, and the cam 28, the sliding device 29, and the blade 3
2a and 32b constitute a switching device 43.

The groove 28a of the cam 28 has a circular shape with a radius of (r ₁ +r ₂ )/ ₂ , as shown in FIG.
It is eccentric by r ₁ )/2. Then, when the dial 18 of the temperature control device 16 is turned 180 degrees from the "strong" setting position (the inlets of the branched air channels 30a and 30b for constant temperature chambers are almost fully closed, the state shown in FIG. 5), the cam roller shaft 29a is rotated. It moves downward by 2ε and comes to the "weak" setting position (the inlets of the branch air passages 31a and 31b for the refrigerator compartment are almost completely closed; the state shown in FIG. 6).

19 is the temperature control device 16, the damper 15,
A heat insulating case 33 houses the branch air passages 31a and 31b for the cold room, the branch air passages 30a and 30b for the constant temperature room, and the opening/closing device 43. A damper case 34, which constitutes the end portion and the flat edge of the cold air inlet 12a, is provided on the damper case 33 on the left and right sides of the temperature control device 16, and is configured to move the cam roller shaft 29a only in the vertical direction. The guide groove 20 is a duct that serves as an air path for introducing cold air from the constant temperature room air outlet 14 to the center of the constant temperature room 4 along the lower wall surface 24 of the partition 6.
21 is a rectification guide plate for diffusing the cold air discharged from the small hole 20a of this duct 20 over the entire upper plane of the constant temperature chamber 4; 22 is a lower wall surface 24 of the inner partition 6;
A rectifying guide space 23 formed by the rectifying guide plate 21 and the rectifying guide plate 21 is a rectifying guide space 23 formed by the rectifying guide space 22 and the constant temperature chamber 4.
A small hole 35 communicates with the double shell case which forms a plurality of layers and has a heat insulating layer 36 having insulation performance for air etc. in the middle, 37 a inner box of the box body 5 forming the refrigerating compartment 3. Recesses provided on both side walls of 27, 38
is a shaft that is integrally attached to the case 8 in order to support the case 8 of the constant temperature room 4 at the upper position of the refrigerator compartment 3 and to slide back and forth to facilitate the loading and unloading of food in the constant temperature room 4. , 39 are U for discharging the cold air discharged into the constant temperature room 4 from both upper sides of the case 8.
The letter-shaped space 40 represents the both side walls of the case 8 and the inner box 2.
This is an exhaust air path formed between the refrigerator compartment 7 and the refrigerator compartment 7, or configured so that cold air is discharged from the constant temperature room 4 and flows into the refrigerator compartment 3 through the space 39. 25 is the freezer compartment door, 26
is the refrigerator door. Note that illustration of refrigeration cycle devices such as a compressor and a condenser for cooling the cooler 9 is omitted.

The operation of the refrigerator-freezer configured as described above will be explained, focusing in particular on the function of maintaining an appropriate temperature in the constant temperature room 4 and the function of uniformizing the indoor temperature distribution when the set temperature of the temperature control device 16 is changed.

When the refrigerator-freezer 1 is turned on, the cold air circulation device 7 starts operating simultaneously with the operation of the refrigeration cycle device consisting of a compressor, a condenser (not shown), a cooler 9, etc. The cold air cooled in step 9 is blown out into the freezer compartment 2 through the outlet 10. The flow of cold air is carried out through a freezer compartment cold air circulation system path that cools the inside of the freezer compartment 2 and returns from the freezer compartment return air path 11 to the cooler 9, and a part of the cold air that cools the inside of the freezer compartment 2.
From the cold air ventilation path 12 for the refrigerator room, the temperature control device 16
The cool air is blown into the refrigerator compartment 3 through the damper 15 which detects the temperature in the refrigerator compartment 3 and controls the flow rate of the cold air, cools the refrigerator compartment 3 and the constant temperature room 4, and then flows from the refrigerator compartment return air path 13 to the cooler. It branches into a refrigerator room cold air circulation system path that returns to 9. Here, the cooling effect of the refrigerator compartment 3 and constant temperature room 4 will be explained in the case where the set temperature of the temperature control device 16 is set to "strong" using the dial 18.

The cold air produced by the cooler 9 enters into the heat insulating case 19 through the cold storage room cold air blowing path 12 and reaches the cold air inlet 12a. Dial 1 of temperature control device 16
8 is set to strong, the cold air inlet 12
The damper 15 provided at a is in the maximum open state, and a large amount of cold air flows into the air passage inside the heat insulating case 19. Then, the cold air is transferred to the branch air passages 31a and 31b for the cold room and the branch air passage 3 for the constant temperature room.
It further branches to 0a and 30b.

By the way, when the dial 18 was previously set strongly, the cam 28 rotated, and the groove 28 of this cam 28
The cam roll shaft 29a fitted into the groove 28a moves upward while sliding in the groove 28a, and the blades 32a, 3
2b moves upward in conjunction. At this time, the blades 32a, 32b are connected to the branch air passages 30a, 30b, 31a, 31 which are symmetrically provided.
Slide the entrance b. As a result, the inlets of the branched air passages 31a and 31b for the cold room are almost fully open, and the inlets of the branched air passages 30a and 30b for the constant temperature room are almost completely closed with a very small gap (see Fig. 5). state). Therefore, most of the cold air flows into the branch air passages 31a and 31b for the refrigerator compartment, which have a large inlet area, and is blown into the refrigerator compartment 3 from the refrigerator compartment air outlet 17. It is cooled to a temperature of about 0°C. On the other hand, the cold air flowing in the four directions of the constant temperature room leaks and flows through the gaps between the entrances of the branched air channels 30a and 30b for the constant temperature room, which are narrowed by the blades 32a and 32b. Then, the air is blown out into the rectifying guide space 22 through the duct 20 and through the small hole 20a opening in the horizontal direction at the tip thereof, and is dispersed in all directions, becoming cold air with a substantially uniform temperature and blown out from the small hole 23 into the constant temperature room 4. be done.

Thereby, the food stored in the constant temperature room 4, such as meat and fish, can be cooled to a temperature of -5 to 0°C suitable for maintaining their freshness and with a uniform temperature distribution inside the room. After cooling the food, the cold air rises in temperature to some extent, causing the temperature to rise slightly.
from the peripheral end of the refrigerator compartment 3 through the U-shaped space 39 and the exhaust air passage 40 provided on both side walls of the case 8.
It is blown out. This cold air has sufficient cooling ability compared to the room temperature inside the refrigerator compartment 3, so it mixes with the cold air flowing in from the refrigerator compartment air outlet 17 and cools the load inside the refrigerator compartment 3. It reaches the opening of the room return air path 13, and this refrigerator room return air path 1
3 and returns to the cooler 9.

In this way, when the dial 18 is set to high, the air temperature in the refrigerator compartment 3 becomes very low at approximately 0°C, so the temperature difference with the constant temperature room 4 is small, and heat leakage is also small. Therefore, as mentioned above, by reducing the amount of cold air flowing into the constant temperature room 4,
The constant temperature chamber 4 can be cooled to an appropriate temperature, and overcooling can be prevented.

Next, the cooling effect of the refrigerator compartment 3 and constant temperature room 4 will be explained in the case where the set temperature of the temperature control device 16 is set to "weak" using the dial 18. Since the dial 18 of the temperature control device 16 is set to low, the damper 15 is closed to the cold air inlet 12a.
is pressed, and the cold air blowing path 12 of the refrigerator compartment is in a closed state. After a long waiting time, the damper 15 opens slightly intermittently, and a small amount of cold air necessary to cool the refrigerator compartment 3 to the low setting temperature (about 5° C.) flows from the cold air inlet 12a. By the way, when the dial 18 was used to set the low setting, the cam 28 rotated, and the cam roller shaft 29a fitted in the groove 28a of the cam 28 slid within the groove 28a, and the guide groove The sliding shaft 29b is restrained by 34,
29c moves downward by 2ε, the entrances of the branch air passages 31a and 31b for the cold room are almost fully closed, and the branch air passages 30a and 30b for the constant temperature room are almost fully open (the sixth
(state shown in figure). As a result, most of the cold air flows in the direction of the branched air passages 30a and 30b for the constant temperature room, and is blown out into the constant temperature room 4 through the small hole 20a of the duct 20, the rectification guide space 22, and the small hole 23. At this time,
The difference between the set temperature of the refrigerator compartment 3, about 5° C., and the appropriate temperature of the constant temperature room 4 becomes large, and therefore heat leakage increases. However, since most of the cold air cools the constant temperature room 4 and the refrigerator compartment 3 before returning to the cooler 9, it is not possible to cool the indoor greenhouse 4 to the appropriate temperature and the refrigerator compartment 3 to the set temperature. can.

When the cooling performance of the refrigerator compartment 3 and constant temperature room 4 is examined when the set temperature of the temperature control device 16 is changed by the dial 18 as described above, the results are shown in FIG. In this FIG. 8, the horizontal axis shows the position of the dial 18, and the vertical axis shows the temperature of the refrigerator compartment 3 and constant temperature room 4, respectively. T ₁ is the temperature change in the refrigerator compartment, T ₂ is the temperature change in the constant temperature room of the conventional refrigerator-freezer, and T ₃ is the temperature change in the constant temperature room 4 of the refrigerator-freezer 1 in FIG. represents. As is clear from FIG. 8, the temperature of the constant temperature chamber of a conventional refrigerator-freezer varies greatly with the temperature of the refrigerator compartment, but the temperature change T ₃ of the constant temperature chamber 4 of this embodiment is almost constant, and the temperature remains almost constant. Maintains appropriate temperature.

According to the embodiment described above, the temperature control device 1
Even if the temperature of the refrigerator compartment 3 changes by changing the set temperature of the constant temperature chamber 6, the air flow to the constant temperature chamber 4 is controlled accordingly, and the temperature change in the constant temperature chamber 4 is extremely small, and the appropriate temperature is stably maintained. I can do it. Therefore,
The present invention has the effect of providing a refrigerator-freezer that can maintain fish, meat, etc. at a temperature just before freezing for a long time and store them while preserving freshness and flavor.

In this embodiment, the shape of the groove 28a of the cam 28 of the opening/closing device 43 is circular, but the shape of the groove is not limited to a circle, and the starting point r ₁ of the distance from the rotation center of the cam 28 to the groove It is sufficient as long as it creates a difference between the end point r 2 and the end point r ₂ and gives the sliding device 29 a stroke r ₂ −r ₁ . For example, as shown in Figure 7b,
The elliptical groove 28a' may be an involute-shaped groove 28a'' as shown in FIG. 7c.Oval groove 2
8a' is suitable for giving a large stroke with a small cam. Involute-shaped groove 28
a″ has the advantage that the angle from the starting point r ₁ to the ending point r ₂ can be freely selected.

Other embodiments will be described below.

FIG. 9 is a sectional view (corresponding to FIG. 6 of the first embodiment) showing details of the vicinity of the heat insulating case of the refrigerator-freezer according to the second embodiment of the present invention.

In FIG. 9, the same parts as those in FIG. 6 are denoted by the same numbers. and 41 is cam 2
The convex protrusions 42a and 42b of uniform thickness provided on the plane of 8A are the cam roller shafts of the sliding device 29A that slides while holding both sides of the protrusions 41.

In this configuration, the cam 28A
When rotated, the cam roller shafts 42a and 42b grip the protrusion 41 and slide, and the guide groove 3
4 and moves straight upward or downward,
As in the first embodiment, the entrance of the branch air passage can be opened and closed by the blades 32a and 32b.

FIG. 10 is a cross-sectional view (corresponding to FIG. 6 of the first embodiment) showing details of the vicinity of the insulation case of the refrigerator-freezer according to the third embodiment of the present invention.

In FIG. 10, the same parts as in FIG. 6 are denoted by the same numbers. In this embodiment, two branched air passages 30a' and 30b' for constant temperature chambers, one of which has a larger cross-sectional area than the other, are formed on the left and right sides of the cold air inlet 12a in the heat insulating case 19A.

With this configuration, a large amount of cold air can flow into the branched air passage 30' for constant temperature room, which has a larger cross-sectional area, and the small holes ( (not shown) blows a large amount of cold air into the constant temperature room, making that part colder than other parts, and making it possible to create a temperature distribution within the constant temperature room.

In general, the temperature suitable for maintaining the freshness of fish and meat is not necessarily in one temperature range, but often varies depending on the type of fish and meat. Therefore, providing such a temperature distribution within the constant temperature room will have a wider range of usage effects. Furthermore, if the inside of the constant temperature chamber is partitioned into two sections, there is the advantage that a constant temperature chamber with two temperatures can be stably maintained.

FIG. 11 is a sectional view (corresponding to FIG. 6 of the first embodiment) showing details of the vicinity of the heat insulating case of the refrigerator-freezer according to the fourth embodiment of the present invention.

In FIG. 11, the same parts as in FIG. 6 are denoted by the same numbers. In this embodiment, in the heat insulating case 19B, branch air channels 30a'', 3
The air path from the inlet of 0b'' to the air outlet 14 for the constant temperature room is set up almost vertically, and the air path leading to the constant temperature room is longer than the branch air paths 31a and 31b for the cold storage room. , the duct 20 shown in FIG.
The branch air passages 30a'' and 30b'' for the constant temperature room are connected to the air outlet 14 for the constant temperature room connected to the air outlet 14 for the constant temperature room, and the air passage resistance is made larger than that of the branch air passages 31a and 31b for the cold room so that the flow rate is restricted. The branch air passages 30a'' and 30b'' for the cold room, which are formed in Only the air passages 31a and 31b can be opened almost fully, closed completely, or opened almost half.

With this configuration, when the temperature control device is set to medium or high, the air path resistance of the branch air paths 30a'' and 30b'' for the constant room is equal to the air path resistance of the branch air paths 31a and 31b for the refrigerator room. Even if the inlets of the branch air passages 30a'' and 30b'' for constant temperature rooms remain open, the inflow of cold air is restricted.

In this embodiment, the branch air passages 31a and 31 for the refrigerator compartment are
Since it is only necessary to open and close the entrance b, the opening/closing device 4
There is an advantage that the 3B cam 28B can be made smaller.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to provide a refrigerator-freezer having a constant temperature room where the temperature changes little even if the set temperature of the temperature control device is changed.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a refrigerator-freezer according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view showing details of the vicinity of the constant temperature chamber in FIG. 1, and FIG. 2 is a sectional view taken along A-A', FIG. 4 is an enlarged sectional view showing details of the heat-insulating case housing the temperature control device and the switchgear, and FIGS. 5 and 6 are taken along BB-B in FIG. 4. FIG. 5 is a cross-sectional view when the set temperature of the temperature control device is set to high, and FIG. 6 is a cross-sectional view.
7 is a plan view showing the details of the cam in FIG. 4, and FIG. 8 shows the cooling performance of the refrigerator-freezer shown in FIG. 1 compared to that of a conventional refrigerator-freezer. Cooling performance diagrams shown in comparison, Nos. 9 to 1
FIG. 1 is a sectional view (corresponding to FIG. 6 of the first embodiment) showing the details of the vicinity of the insulation case of the refrigerator-freezer according to the second to fourth embodiments of the present invention. 1...Fridge-freezer, 2...Freezing room, 3...Refrigerating room, 4... Constant temperature room, 12...Refrigerating room cold air duct,
12a... Cold air inlet, 14... Temperature chamber outlet, 15... Damper, 16... Temperature control device, 1
7...Refrigerating room outlet, 28, 28A, 28B...
...Cam, 29, 29A...Sliding device, 30a, 3
0a', 30a'', 30b, 30b', 30b''... Branch air path for constant temperature room, 31a, 31b... Branch air path for refrigerator room, 32a, 32a', 32b, 32b'... Blade, 43, 43A , 43B...Switching device.

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 the temperature of the refrigerator compartment can be set at any position between high, medium, and low. , and correspondingly changes the damper opening degree of a damper provided at the cold air inlet of the cold air blowing path for the cold storage room that guides the cold air for cooling to the cold storage room, thereby controlling the flow rate of the air path. , a refrigerator-freezer equipped with a temperature control device for controlling the temperature of the refrigerator compartment, comprising: a branch air passage for the refrigerator compartment from the cold air inlet of the refrigerator compartment cold air blowing passage to the outlet for the refrigerator compartment; When the branch air passage for the constant temperature room leading to the greenhouse air outlet and the temperature setting of the temperature control device are set to medium,
When the preset temperature is set to the high side at the intermediate point of the entire sliding stroke, the entrance of the branch air passage for the refrigerator compartment is opened further than the intermediate point, and the entrance of the branch air passage for the constant temperature room is opened further. Close the entrance again,
When the set temperature is set to the weak side, a blade is provided that can further close the entrance of the branch air passage for the refrigerator compartment than the intermediate point and further open the entrance of the branch air passage for the constant temperature room. A refrigerator-freezer characterized by comprising an opening/closing device. 2. Claim 1, characterized in that the branch air passage for a constant temperature room is composed of two branch air passages for a constant temperature room, which are formed on the left and right sides of the cold air inlet, one of which has a larger cross-sectional area than the other. The refrigerator/freezer listed. 3. It has a freezer compartment, a refrigerator compartment, and a constant temperature room installed in contact with the refrigerator compartment, and the temperature of the refrigerator compartment can be set at any position between high, medium, and low. The temperature of the refrigerator compartment is controlled by controlling the flow rate of the air passage by changing the damper opening degree of a damper provided at the cold air inlet of the refrigerator compartment cold air blowing passage that guides cold air for cooling to the refrigerator compartment accordingly. In a refrigerator-freezer equipped with a temperature control device that performs a branched air path for a constant temperature room which is raised and configured to have a longer air path than the branched air path for the cold storage room, has a higher air resistance than the branched air path for the refrigerator room, and leads to an air outlet for the constant temperature room; A switching device having a blade capable of opening the inlet of the branch air passage for the refrigerator compartment almost fully open, almost fully closed, and almost half open when the set temperature is set to strong, weak, and medium, respectively. Features a refrigerator-freezer.