JPS6259362A - 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] Industrial Field of Application The present invention is of a forced ventilation system, and includes a freezer compartment, a refrigerator compartment,
The present invention relates to a refrigerator equipped with a switching chamber capable of switching between freezing and refrigeration or a third temperature range.

BACKGROUND ART A conventional example will be explained with reference to FIGS. 4 to 7. In the figure, 1 is the refrigerator body, outer box 2. Inner box 3, and both boxes 2
．． It is composed of a heat insulating material 4 filled between 3 and 3. 6
is the first partition wall, which houses a cooler 69 and a blower 7 for forced ventilation, and has a freezer compartment 8 on top. A switching chamber 9 in which the temperature can be switched between freezing and refrigeration or a third temperature range is formed in the lower part. A second partition wall 10 is located below the first partition wall 6, and has the switching chamber 9 above. A refrigerating chamber 11 is defined in the lower part. 12, the cold air cooled by the cooler 6 is sent to the freezer compartment 8 by the blower 7. Switching room 9. Refrigerator room 11
This is a duct for blowing air to.

Also, switching room 9. At the discharge ports 13 and 14 of the refrigerator compartment 11, there are dampers (thermomostara) 15 and 16 that control the amount of cold air respectively.
Of these, the damper thermostat 15 provided in the switching chamber 9 is composed of a mechanical part 17 and an air passage part 18, and the air passage is controlled by rotating a shaft 19 for temperature adjustment provided in the mechanical part 17. The degree of opening of the flap 20 for adjusting the amount of cold air provided in the section 18 is adjusted, and the freezing temperature range (e.g. -12°C or less) and the refrigerating temperature range (e.g. 0 to 10"C) are adjusted.
) or a third temperature range (for example, -3 to o'c). 21 and 22 are the damper servers, respectively.
Mostara) 15.16 is a control panel that houses the control panel 21, which is provided in the switching chamber 9, and has a heat insulating material 23 inside so that a first cold air discharge air passage 24 penetrates to the top surface. It is formed. Reference numeral 26 is a lever device connected to the upper end of the panel 21 and provided on the top surface of the switching chamber 9, and one end of which is inserted and fixed into the temperature adjustment shaft 19 of the damper thermostat 15 housed in the control panel 21. first lever 2
6, a second lever 27 connected to the other end of the first lever 26 to remotely control the rotation of the shaft 19 of the damper thermostat 16, and a second lever 27 on both sides of the second lever 27. A second cold air discharge air passage 28 that communicates with the cold air discharge air passage 24 and extends to the front, and a plurality of first cold air discharge ports 2 that are provided in front of the second cold air discharge air passage 28.
9, a second cold air discharge port 30 provided at the rear, and this second
It is composed of a shutter 31 that opens and closes a cold air discharge port 30. The second lever 27 is rotatably attached to a shaft 32. 33 is the second lever 27
The rod shaft is provided with both ends extending into the second cold air discharge air passage 28, and the shutter 31 is pivotally attached to both ends of the rod shaft. 34 is a projection formed integrally with a part of the rod shaft 33, and only when the second lever 27 is rotated to the freezing setting position (position a in the figure),
The protrusion 34 is pushed down by the side of the second lever 27, converting it into a rotational movement of the rod shaft 33 to open the shutter 31; in other cases, the shutter 31
is configured to close closely to seven flanges 36 formed at the periphery of the second cold air discharge port 30. This means that the switching chamber 9 can be refrigerated or placed in the third temperature range (for example -3
~0°C), the entire room can be cooled in a well-balanced manner by supplying a small amount of cold air mainly to the front of the room, due to the structural heat absorption balance surrounding the switching room 9. When a freezing temperature range is desired, a large amount of cold air must be forced to circulate throughout the room, so a cold air outlet is required at the rear of the room, and this is done to achieve both.

In this configuration, the cold air cooled by the cooler 6 is passed through the duct 12 by the blower 7 to the outlet 1 of the switching chamber 9.
3, and in the case of freezing temperature range setting, flap 2
Increase the opening degree of 0, or refrigerate or store in the third temperature zone (-
In the case of a setting of 3 to 0''C), the opening degree of the flap 20 is kept small, and after being controlled to an appropriate amount by the damper thermostat 16, the cold air flows into the first cold air discharge air path 24 via the air path section 18. Thereafter, the cold air is guided to the second cold air discharge air path 28 provided in the lever device 25, but if the temperature setting position by the second lever 27 is in the freezing temperature range (position a in the figure), The protrusion 34 of the rod shaft 33 is pushed down on the side of the second lever 27, and as the rod shaft 33 rotates, the shutter 31 is opened and a large amount of cold air is released from the second cold air outlet 30 provided at the rear. Cold air is supplied into the switching chamber 9 to maintain the interior at a freezing temperature.Next, when the second lever 27 is at any other temperature setting position, the shutter 31 is closed and the cold air is directed forward. The cool air is distributed through the first provided cold air discharge ports 29 and falls into the room, cooling the room while maintaining temperature balance.

Problems to be Solved by the Invention However, in such an air passage configuration, it is difficult to set the temperature by the second lever 27 to a temperature other than the freezing temperature range, such as a refrigerating temperature range or a third temperature range (-3 to 0"C). In this case, in the second cold air outlet 3o provided at the rear of the lever device 25, the seven flange 36 formed on the periphery and the closed shutter 31 are in close contact with each other over the entire circumference. The cold air is not discharged from the second cold air discharge port 30 at all, but is discharged into the room from the first cold air discharge port 29 provided at the front, but if humid air enters the room by, for example, opening or closing a door. When food with a high moisture content is placed indoors, moisture in the air or water vapor emitted from the food condenses around the second cold air outlet 3o, causing condensation, especially on the surface of the shutter 310. The condensed water drops travel along the surface of the shutter 31 and the second cool air discharge port 3o, and accumulate in the close contact area of the lower side of the seven flange 36, straddling them (as shown in FIG. 7) Eventually, these water droplets are cooled and frozen together with the cooling effect in the room, and finally the shaft 31 and the flange 36 are frozen, and then the second
Even if you try to change the setting to the freezing temperature range by operating the lever 27, the shutter 31 freezes and does not open, so the second
There was a problem in that the lever 27 also became inoperable, making it impossible to switch to the freezing temperature range.

The present invention solves the above-mentioned conventional problems, and has the advantage that humid air may enter the switching chamber or a large amount of water vapor may be generated from foods, etc., and the shutter portion provided at the second cold air outlet may Even if moisture condenses on the shutter, the purpose is to eliminate this condensed water and prevent the shutter from freezing.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a vent hole that allows some of the cold air to leak into the second cold air outlet even when the shutter is closed.

Effect of the present invention With the above-described configuration, moisture condenses on the surface of the shutter due to entry of humid air by opening and closing the door or generation of water vapor from stored food, and this condensed water flows downward.
The cold air accumulates between the shutter and the seven lunges that form the periphery of the second cold air outlet, but due to the forced ventilation of the cold air during the cooling operation, a portion of the cold air passes through the vent and passes through the second cold air outlet. In other words, it is forced to leak to the surface side of the shutter,
The ventilation effect evaporates condensed water and prevents the shutter from freezing.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3. In addition, the same reference numerals are used for the same configuration as before.
A detailed explanation thereof will be omitted and only different parts will be described.

In the figure, 36 is a lever device, which is connected to a first lever 26 whose one end is inserted and fixed to the temperature adjustment shaft 19 of the damper thermostat 16 housed in the control panel 21, and the other end of this first lever 26. a second lever 27 for remotely controlling the rotation of the shaft 19 of the damper thermostat 16;
A second cold air discharge air passage 28 is formed on both sides of the air passage 28 to communicate with the first cold air discharge air passage 24 and extend forward.
A plurality of first cold air discharge ports 29 provided in front of the cold air discharge air passage 28, a second cold air discharge port 30 provided at the rear, and a rod shaft 33 provided to intersect with the second lever 27. A shutter 37 is pivotally attached to both ends of the cold air discharge port 3o to open and close the second cold air discharge port 3o. The shutter 37 has a receiving plate 38 integrally formed on a part of both sides thereof, and a seven flange 36 formed on the periphery of the second cold air outlet 30.
By being supported by the support plate 39 that protrudes slightly higher (for example, 0.5 Jff), a small amount of the ventilation hole 4o is formed mainly on the lower side even when closed.

In this configuration, when the temperature setting position by the second lever 27 is in the freezing temperature range (position a in the figure), all the same functions as in the conventional case are performed, but when the temperature setting position is at any other temperature setting position, the shutter 37 is closed and covers the second cold air outlet 3o, but at this time, the plate 38 of the plate 38 provided in the shutter 37 is supported by the support plate 39, and a vent hole 40 is slightly formed, so that the second cold air outlet 3o is completely sealed. It is not a state. Therefore, a small amount of the cold air forced through the second cold air discharge air passage 28 provided in the lever device 36 leaks from the vent 40 to the second cold air discharge opening, causing the shutter 37 to leak. It licks the surface and flows. Therefore, even if moisture condenses on the surface of the shutter 370, for example, when humid air enters the room by opening and closing the door, or when moisture-rich food is thrown into the room, it is vaporized by forced ventilation. Freezing due to freezing between the shutter 37 and the flange 36 of the second cold air discharge port 30 can be prevented. Incidentally, since the opening size of the vent hole 40 is minute (for example, o, saw), the influence on the temperature balance of the switching chamber 9 during normal cooling operation can be ignored.

Effects of the Invention As is clear from the above explanation, according to the present invention, the switching chamber can be used for refrigeration or a third temperature zone other than the freezing temperature zone (for example, -
Even if the temperature is set to 3 to 0°C) and the second cold air outlet installed at the rear of the room is closed with a shutter, a small vent will be formed and a small amount of cold air will be released. Since the air leaks to the surface of the shutter, even if the switching room encounters a humid environment and condenses on the shutter surface, for example, the vaporization of this condensed water is promoted by forced ventilation, and the function of the shutter is prevented by freezing. Failures can be prevented before they occur, and the implementation effects are extremely high.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of essential parts of a refrigerator showing an embodiment of the present invention;
Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a perspective view of essential parts of the refrigerator, Fig. 4 is a front view of a conventional refrigerator, and Fig. 6 is Fig. 4. FIG. 6 is a perspective view of essential parts of the refrigerator shown in FIG. 1, and FIG. 7 is a sectional view taken along the line BB in FIG. 6. 6...Cooler, 7...Blower, 8...
...Freezing room, 9...Switching room, 11...
...Refrigerating room, 12...Duct, 16...
- Damper thermostat, 21... Control panel, 24... First cold air discharge air path, 2
7. River, second lever (operation lever), 28...
...Second cold air discharge air passage, 29...First cold air discharge port, 30...Second cold air discharge port, 36...
... Lever device, 37 ... Shutter, 4o
・River...Vent. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] A freezer compartment, a refrigerator compartment, a switching compartment capable of switching between freezing and refrigeration or a third temperature range, and a blower for forcing cold air cooled by the cooler into the freezing compartment, the refrigerator compartment, and the switching compartment. a duct, a damper thermostat provided at the entrance of the switching chamber of the duct and capable of adjusting the temperature from freezing to refrigeration, a control panel housing the damper thermostat and forming a first cold air discharge air passage therein; a lever device provided on the top surface of the room and connected to the control panel to remotely control the damper thermostat; an operating lever housed in the lever device to switch between freezing and refrigeration or a third temperature zone; and the lever. a second cold air discharge air path formed in the device and communicating with the first cold air discharge air path; a first cold air discharge port provided in front of the second cold air discharge air path; and a first cold air discharge port provided in the rear of the second cold air discharge air path. a second cold air outlet, a shutter that opens and closes the second cold air outlet in conjunction with the operating lever, and a portion of the cool air that leaks to the second cold air outlet even when the shutter is closed. Refrigerator with vents.