JPS6259364A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a refrigerator equipped with a freezing compartment, a refrigerating compartment, and a switching compartment capable of switching between freezing and refrigeration or a third temperature range.

Conventional technology A conventional example will be explained with reference to FIGS. 6 to 11.

In the figure, reference numeral 1 denotes a refrigerator compartment main body, which is composed of an outer box 2, an inner box 3, and a heat insulating material 4 filled between these boxes 2 and 3. 6 is the freezer compartment 6 and the lower part is the freezer and refrigerator or the third compartment.
A cooler 8 and a forced air blower 9 (hereinafter referred to as a blower) are housed inside the upper partition wall that forms a switching chamber 7 in which the temperature can be changed between temperature ranges. 10 is the switching chamber 7 and the refrigerator compartment 11
This is the lower partition wall that forms the partition. 12 is a blower 9 which blows the cooled air from the cooler into the freezer compartment 6, the switching compartment 7,
It is a duct leading to the refrigerator compartment 11, and the switching compartment 7, the refrigerator compartment 11
Damper thermostats 16 and 16 are provided at the discharge ports 13 and 14 for controlling the amount of cold air, respectively. Of these, the damper thermostat 16 provided in the switching chamber 7 is composed of a mechanical part 17 and an air passage part 18. , the mechanical part 1
The degree of opening of the flap 20 for adjusting the amount of cold air provided in the air passage section 18 is adjusted by rotating the shaft 19 for temperature adjustment provided at 7, and the opening degree of the flap 20 for adjusting the amount of cold air provided in the air passage section 18 is adjusted, and the temperature range between freezing temperature range (for example -12 degrees Celsius or less) and refrigerating temperature range ( For example, 0 to 10°C) or a third temperature range (for example, -3 to 0°C) can be controlled. Reference numerals 21 and 22 designate control panels that accommodate the damper actuators 15 and 16, respectively. Of these, the control panel 21 provided in the switching chamber 7 has a first cold air discharge air path formed by a heat insulating material 23 inside. 24 is formed so as to penetrate through the top surface. Reference numeral 25 denotes a lever device connected to the upper end of the control panel 2 and provided on the top surface of the switching chamber 7, and a temperature adjustment shaft 1 of the damper thermostat 16.
9, the first lever 26 has one end inserted and fixed into the first lever 26;
The second lever 27 is connected to the other end of the lever 26 to remotely control the rotation of the shaft 19 of the damper thermostat 15, an operating portion 27a, and a lever cover 28 that covers and accommodates the second lever 27. The second lever 27 is rotatably attached to a shaft 29 integrally formed in the center of the lever cover 28. Further, a first cold air discharge air passage 2 in the control panel 21 is provided in the left and right spaces separated by the lever device 26 and the partition wall 28a.
4, the second cold air discharge air passage 30 communicates with the lever cover 2.
8, and the lever cover 28 is provided with a cold air discharge port 31 facing the switching chamber 7.

Here, the temperature distribution tendency in the switching room 7 is that the temperature is lower at the back of the room and lower at the front due to factors such as the existence of the duct 12 through which low-temperature cold air flows and the difference in heat absorption from the door side. When a tendency towards higher temperatures has already appeared in terms of heat balance and the switching chamber 7 is used as a third temperature zone (e.g. -3~oC) that requires strict temperature control especially for preserving fresh foods. In order to prevent this, the cold air discharge ports 31 are generally arranged more concentrated in the front than in the center of the switching chamber 7 to ensure a temperature balance in the room. It is configured.

In this configuration, the cold air cooled by the cooler 6 is sent to the freezer compartment 6 via the duct 12 by the blower 7, and to the damper thermostat 16 provided at the discharge port 13.
After being controlled to an appropriate amount by
, the temperature adjustment shaft 19 of the damper thermostat 15 is rotated to control the desired set temperature range by operating the second" lever 27, and the temperature adjustment shaft 19 of the damper thermostat 15 is rotated to control the temperature to the desired set temperature range. If desired, the opening degree of the flap 20 of the damper thermostat 16 is controlled relatively small to blow air, and if a freezing temperature range is desired, the opening degree of the flap 20 is controlled sufficiently large to blow a large amount of air. In either case, the cold air that has passed through the flap 2o is sent to the air passage section 18 of the damper thermostat 16 and the first cold air discharge air passage 2 of the control panel 21.
4. The cold air is discharged into the room through second cold air discharge air passages 30 provided on the left and right sides independent of the lever device 26, and through a cold air discharge port 31 provided in front of the top surface of the switching chamber 7 to perform cooling.

Problems to be Solved by the Invention However, with regard to the air passage configuration of the switching chamber 7, as described above, the temperature of the switching chamber 7 cannot be controlled by refrigeration or by
If the desired temperature range (-3~oC) is desired, only a small amount of cooling air is required, and by distributing the cold air unevenly toward the front, the temperature distribution throughout the room can be maintained stably. If a freezing temperature range is desired, it is necessary to distribute and discharge a large amount of cooling air throughout the room in order to sufficiently lower the indoor temperature, and it is necessary to distribute and discharge a large amount of cooling air throughout the room. Moreover, there was a problem in that the temperature could not be lowered to a certain level, and the temperature unevenness in the front and back of the room became large.

The present invention solves the above-mentioned conventional problems, and allows a predetermined temperature to be maintained with less temperature variation regardless of whether freezing, refrigeration, or the third temperature range (-3 to 0°C) is desired. The purpose is to provide an air passage configuration of a switching room that can be realized.

Means for Solving the Problems In order to solve the above problems, the present invention provides cold air discharge ports on the front and rear surfaces of the second cold air discharge air passages on the left and right sides of the switching chamber, respectively, and also provides cold air discharge ports through the lever device section. , is equipped with an integrated shutter device consisting of a shutter and a connecting part that has a protrusion that comes into contact with the lever, and when the second lever is set to the freezing temperature, it rotates while raising the protrusion of the connecting part, thereby pivoting to the cover case. When the shutter is closed, the shutter is kept open, and the cold air outlet on the back side is closed by the shutter during refrigeration or when the third temperature zone is set, and when the shutter is closed, the bottom end of the back side of the shutter is The control panel is configured to be located on the same plane as the lower end surface of the outlet of the cold air discharge air passage of the control panel, or at a position below it.

Effect of the Invention With the above-described configuration, the present invention opens the shutter over almost the entire height of the outlet of the cold air outlet of the control panel when the temperature is set to the freezing temperature range, and discharges a large amount of cold air from the outlet on the back side. Therefore, in combination with the discharge of cold air from the front outlet, the indoor temperature is kept sufficiently low and temperature unevenness is kept small.

When refrigerating or setting the third temperature zone, the lever does not come into contact with the connecting portion, the shutter closes the back outlet, and the discharge is discharged into the room from the front outlet.

Furthermore, when the shutter is closed, the lower end side of the rear surface is on the same plane as the lower end surface of the outlet of the cold air discharge air passage of the control panel, or is located below, so that air passage resistance can be prevented.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 6. Components that are the same as those of the prior art are denoted by the same reference numerals, detailed explanations thereof will be omitted, and only different parts will be described.

In the figure, reference numeral 28 denotes a cover case provided on the top surface of the switching chamber 7, which is inserted and fitted into the upper end side groove 21a of the foot control panel 21, and has a first lever 27 inside which is rotated by a shaft 29.
is mounted on the shaft, and one end is attached to the damper servostat 1.
A second lever 26 inserted and fixed into the temperature adjustment shaft 19 of No. 5 is interlocked with an operating portion 27a at the other end for remote control. 30 a is an internal space independent from the lever device section 26 by a wall 28 a integrated with the cover case 28 , and a first cold air discharge air passage 2 provided in the control panel 21 .
A second cold air discharge air passage 3° communicating with the air outlet 4 is formed.

31 is a discharge port provided on the front surface of the cover case 28, and 32 is a discharge port provided on the back surface. 33 is a shutter device that closes the discharge port on the back side, and includes a sealing heat insulating material 33a and a shutter plate 33b (hereinafter referred to as shutter 3).
3a) and a connecting part 33c, and is fixed to the shaft part 29 of the case cover 28 so as to be rotatably driven, and the connecting part 33c has a protrusion 34 integrally formed at almost right angles with the shutter.
is formed. Since the sealing material 35 is attached to the notch 28b of the wall 28a, the second cold air discharge air path 3o
There is no cold air coming in.

Further, the rear lower end surface 33θ of the shutter 33a when closed is as follows:
It is provided at substantially the same position as or below the discharge port lower end surface 24a of the first cold air discharge air passage 24 provided in the control panel 21, so that the air passage resistance is low.
.

In this configuration, the cold air cooled by the cooler 8 is passed through the duct 12 by the blower 9 to the outlet 1 of the switching chamber 7.
3, and when setting the freezing temperature range, increase the opening degree of the flap 2o, and set the temperature range for refrigeration or the third temperature range (-
3 to 0°C), the opening degree of the flap 2o is kept small and the damper thermostat 15 controls the appropriate amount, and then the cold air is discharged through the air passage section 18 to the first cold air discharge air passage 24.
flow inside. Thereafter, the cold air is guided into the second cold air discharge air path 30 from the discharge port 24b. Now the second lever 2
When the temperature setting position according to No. 7 is in the freezing temperature range (position shown in the figure), the second lever 27 rotates the connecting portion protrusion 34 of the shutter device while raising it along the inclined surface 34a. The interlocking shutter 33a opens and the second
At this time, the discharge port 24b of the first cold air discharge air passage 24 is opened over almost the entire height, and a large amount of cold air is discharged from the discharge port 32, and the shutter ends 33d are kept open at the set position d of the lever 27. Cold air is discharged from the front discharge port 31 and supplied to the entire area of the switching chamber 7, making it possible to maintain a sufficiently low freezing temperature range while suppressing indoor temperature unevenness.

On the other hand, when the temperature setting position by the second lever 27 is refrigeration or the third temperature range (-3 to o C) (position a in the figure), the second lever 27 Since the shutter 33a is located at a position where it does not come into contact with the protrusion 34, it covers and closes the discharge port 32 on the back side due to its own weight, so cold air is supplied to the switching chamber 7 only from the discharge port 31 on the front side, and the structure By correcting the imbalance in temperature distribution caused by the heat balance at the top, where the front part is high and the back part is low, it is possible to maintain small temperature unevenness throughout the room.

Effects of the Invention As is clear from the above explanation, according to the present invention, the following effects can be obtained.

(1) When setting the freezing temperature zone, the respective discharge ports provided in the second air path are all opened, and in order to supply a large amount of cold air to almost the entire area of the switching chamber, the unevenness in indoor temperature is kept to a minimum. However, a sufficiently low freezing temperature range can be maintained.

(2) When refrigerating or setting the third temperature range (-3 to O℃), the cold air outlet at the back is blocked by the shutter and cold air is supplied only from the front outlet, so the front part of the room is It is possible to correct the tendency of temperature distribution due to the structure where the temperature distribution is high and low in the inner part, and it is possible to maintain the indoor temperature unevenness to a small level.

(3) Since the lower end surface on the back side of the shutter is placed on the same level as or below the lower end surface of the cold air outlet from the control panel, the air path resistance can be kept as low as possible.

(4) The lever device, the 7-layer device, the cold air discharge air passage, and the discharge port are housed in an integrated enclosure and connected to the control panel, so assembly is easy and workability is excellent.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line BB in Fig. 1, Fig. 3 is a perspective view showing constituent parts, and Fig. 4 is a sectional view of a main part. , Figure 6 is a front view of Figure 4, and Figure 6 is a front view of Figure 4.
The figure is a sectional view showing the conventional example, FIG. 7 is a sectional view of the main part of FIG. 6, FIG. 8 is a front view of FIG. 7, FIG. 9 is a perspective view of the component parts, and FIG. FIG. 11 is a sectional view taken along line B-B in FIG. 10. 6...Freezing room, 7...Switching room, 8...
...Cooler, 9...Blower, 11...
...Refrigerating room, 12...Duct, 16...
・Damper thermostat, 21... Control panel, 24... First cold air discharge air path,
26...First lever (rotary lever), 27.
...Second lever (operation lever), 30...
...Second cold air discharge air passage, 31... Front cold air discharge port, 32... Back cold air discharge port, 33...
...Shutter device, 33a...Shutter, 33c...Connection part, 24b...Discharge port of first cold air discharge air path, 34... ·protrusion,
24a...First cold air discharge air path, lower end surface of the discharge port. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 6
Figure 7 Figure 8 Figure 9

Claims (2)

[Claims] (1) A freezing room, a refrigerator room, a switching room where the temperature can be switched between freezing and refrigeration or a third temperature zone, and a blower and duct that forcefully circulates cold air cooled by the cooler to each of the rooms; a control panel that houses a damper thermostat that controls the amount of cold air according to the temperature zone setting of the switching chamber provided at the entrance of the switching chamber of the duct and has a first discharge air passage therein; A second lever that is integrally provided and connected to the control panel and is inserted and fixed into the shaft of the damper thermostat in conjunction with the first lever to remotely control switching of each temperature zone, and an operating section. The lever device section and the second discharge air path that communicates with the first cold air discharge air path that is provided on the left and right sides and independent of the lever device section include cold air discharge ports in the front and back portions, respectively, and the lever. A shutter device including a connecting portion having a protrusion that passes through the device portion and comes into contact with the second lever, and a shutter having a pivotally supported fulcrum and closing the cold air outlet in the rear portion, When the freezing temperature zone is set, the lever is rotated while raising the protrusion of the connecting part of the shutter, and the connecting part is rotated by a certain angle to keep the shutter in the open state, and when the refrigeration or third temperature zone is set, the lever of A refrigerator equipped with a shutter device that closes the cold air outlet. (2) The refrigerator according to claim 1, wherein when the shutter is closed, the lower end surface on the back side of the shutter is on the same plane as the lower end surface of the outlet of the first discharge air passage, or is positioned below.