JPH01184379A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent water from being sprinkled over a thermostat for a room damper and from flowing into an upstream side discharge port by providing a cover plate whose upstream side is inclined upward and whose downstream side is inclined downward, directly above the upstream side discharge port of a blast duct, and also providing a rib which places the cover plate to prevent the ingress of flowing water, around the circumference of the upstream side discharge port. CONSTITUTION:A cover plate 23 whose upstream side is inclined upward and downstream side and whose downstream side is inclined downward, is placed on a rib 24 provided around the circumference of an upstream side discharge port 16. Cool air which has been delivered by pressure through a blasting duct 15 by a blower 10 flows through a cool air intake port 25 and is controlled of its quantity of supply to a third chamber 8 through an upstream side discharge port 16 by a third room damper thermostat 19 thereby to hold the third chamber 8 at a predetermined value. In this case, by inclining the cover plate 23 with respect to the flow of cool air, the quantity of cool air to be supplied to the upstream side discharge port 16 is increased, and dropping of defrosted water from the upper part into an upstream side discharge port 16 and the flowing in from the surroundings can be prevented by the cover plate 23 and the rib 24 for placing the same.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cold air forced circulation type refrigerator having a freezing compartment, a refrigerating compartment, and a third compartment.

A conventional technical example will be explained with reference to FIGS. 4 and 6. 1 is the refrigerator main body, which includes an outer box 2, an inner box 3, and a heat insulating material 4 filled between them.
It is confirmed by. 6 is the freezer room.

6 is a refrigerating room divided vertically by a partition wall 7, and a third chamber 8 is arranged below the partition wall 7, and has a bottom plate 8a and a door 8.
b. A cooler 9 is installed at the back of the freezer compartment 5, and above it a blower 1o for stirring cold air is provided. Further, on the front side, a front cooler cover 11 and a rear cooler cover 12, which form part of the air passage, are installed. 11a was provided on the front cooler cover 11. 11b is a cold air discharge port for the freezer compartment. Reference numeral 13 denotes a defrost water receiver, which receives the defrost water from the cooler 9 and drains it to the outside of the refrigerator via a drain joint 14. Reference numeral 15 designates an abbreviated ventilation duct provided on the side of the cooler 9 and below the defrosting water tray 13), which supplies cold air to the third chamber 8 directly below the vertical portion 15a of the ventilation duct 16. Upstream discharge port 16 to be introduced and 1JIJ air duct 16
A downstream discharge port 17 for completely supplying cold air to the cold region chamber 6 is provided in the horizontal portion 15b. Further, 18 is a temperature control device, which is composed of a front heat insulating case 18a, a bottom heat insulating case 18b, and a front panel 18c.

A third room-side damper thermostat 19 for controlling the cold air supply to the third chamber 8 and a cooling room-side damper thermostat 20 for controlling the cold air supply to the refrigerator compartment 6 are housed therein. ing. 21 is a cold air discharge duct to the third chamber 8, and 22 is a cold air discharge duct to the cold region chamber 6.

In this configuration, the air cooled by the cooler 9 is discharged from the cold air outlet 11a of the freezer compartment by the blower 10, is supplied into the freezer compartment 5, and after the air in the freezer compartment 5 has been completely cooled, the air is discharged from the freezer compartment. The cold air is sucked in through the suction port 11b and is forced into the freezer compartment 6, passes through the blower duct 15, passes through the upstream discharge port 16 and the downstream discharge port 17, reaches the temperature control device 18, and reaches the third temperature control device 18. Room side damper thermostat 19
According to the third chamber8. Damper thermostat for refrigerator compartment) 2
0, the supply amount is controlled so that the temperature of the cooling chamber 6 reaches a predetermined internal temperature. In this way, the cold air supplied to the refrigerator compartment 6 and the third compartment 8 is passed through a cold area suction duct (not shown).

It is returned to the cooler 9 again, and thereafter the same action is continued to perform cooling.

Incidentally, here, the third chamber 8 has a normal cold range temperature (3
Chilled (phantom 0°C), water temperature (-1°C) and partially free zinc
It is designed to be able to switch to a temperature suitable for fresh preservation for each prize, such as IFJ-s°C), and requires highly accurate temperature control.

However, in such a configuration, the blower duct 16
Since the upstream discharge port 16 of the upstream side is opened directly with respect to the flow direction of the cold air, the cold air flows into the upstream side discharge port 16.
Even if a predetermined temperature can be secured in the chilled or freezing temperature range, when switching to the partial temperature range, there will be insufficient cold air. The namostat 19 should be set to a large opening (nearly fully open) in advance to control the temperature. However, if the opening degree of the third room damper thermostat 19 is set in this case, the temperature of the freezer compartment 5 is switched to a lower temperature, the pressure m4* (not shown), and the blower is operated at 1°. Even if the rate rises, the damper thermostat 19 on the third room side will not close and the cold air will continue to be supplied, causing the temperature in the third room 8 to drop by a predetermined degree. for,
There were problems with fresh food freezing.

In addition, the frequency of opening and closing the door may cause sweating or sweating.

If there is misuse such as forgetting to close the door, the ventilation duct 1
5, and this frost melted during defrosting, flowed downward, and dripped directly onto the third room damper thermostat 19.

Alternatively, it may flow into the upstream discharge port 16 and reach the third chamber damper thermostat 19, causing it to freeze, resulting in a situation where the temperature cannot be controlled.

In view of the above problems of the conventional example, the present invention increases the amount of cold air flowing into the upstream discharge port, so that even if the temperature of the freezer compartment is switched in the partial temperature range, the temperature of the third compartment will not be affected. This prevents the defrosting water from dripping or flowing into the third room-side damper thermostat storage area from the ventilation duct, thereby preventing freezing of the third room-side damper thermostat and improving reliability. The purpose of the present invention is to provide a refrigerator with a high temperature control function.

Means for Solving the Problems In order to solve the above-mentioned problems, the refrigerator of the present invention includes a cover plate that is slanted so that the upstream side is upward and the downstream side is slanted downward. , and has a configuration in which this cover plate is placed and a lip is provided around the upstream discharge port to prevent the intrusion of running water.

Function: With the above-described configuration, the upstream side of the cover plate is raised upward with respect to the flow of cold air, so that it is easy to take in cold air to the upstream discharge port, and this cover plate allows the third chamber to be It is possible to prevent water from directly hitting the side damper thermostat, and furthermore, the rig around the upstream outlet can prevent water from flowing into the upstream outlet.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3. It should be noted that the same components as those in the prior art will be given the same reference numerals, detailed explanations thereof will be omitted, and only different parts will be described.

In the figure, reference numeral 23 denotes a cover plate, which is tilted upward on the upstream side and downward on the downstream side, and is placed on a lip 24 provided around the upstream discharge port 16.

In addition, in order for the sub 24 to take in cold air from the upstream side, the lip 24a on the upstream side is lowered by -step, and a new cold air intake port 25 is formed by the lip 24 and the cover plate 23. .

In such a configuration, the blower 1o blows the air into the air duct 1.
6, the cold air flows in through the cold air intake port 25, passes through the upstream discharge port 16, and the supply amount to the third chamber 8 is controlled by the third chamber damper thermostat 19. The third chamber 8 is kept at a constant temperature.

As described above, in this embodiment, by tilting the cover plate 23 with respect to the flow of cold air, the amount of cold air supplied to the upstream discharge port 16 is increased, and the cover plate 23 and the mounting The lip 24 can prevent defrosting water from dripping into the upstream discharge port 16 from above and from flowing in from the surroundings.

Effects of the Invention As described above, the present invention provides a cover plate with the upstream side inclined upward and the downstream side inclined downward, right above the upstream outlet of the ventilation duct, and a bond plate is mounted. At the same time, it is possible to increase the amount of cold air flowing into the upstream outlet. Even when the room is set in the partial temperature range, a larger amount of cold air can be secured than before, so the opening degree of the third room-side damper thermostat can also be set smaller in advance to keep the freezer room temperature at a low temperature. Even if the operation rate increases, the damper thermostat on the third room side does not close easily, and the problem of the third room being cooled with hot water as in the conventional case is eliminated.

(2) Under harsh operating conditions, such as frequent door opening/closing or forgetting to close the door, frost may form on the side walls of the ventilation duct, and even if this frost melts and drips during defrosting, the cover plate will directly remove the Even if water does not form on the damper thermostat on the room side (No. 3), and even if water flows down the side wall of the ventilation duct and reaches the area around the upstream discharge port, the ribs for the cover plate device installed around this Therefore, the third room-side damper thermostat will not be frozen by this water.

This provides a refrigerator with highly reliable temperature control functions that improves the accuracy of temperature control in the third chamber and maintains the function of the third chamber damper thermostat under severe usage conditions. It is possible.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view 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 showing the cover plate and lip, Fig. 4 is a front sectional view of the conventional example,
FIG. 6 is a sectional view taken along line B-B' in FIG. 4. 1...refrigerator body, 2...outer box, 3.
...Inner box, 4...Insulation material, 6...
・Freezer room, 6... Refrigerator room, 7... Compartment wall, 8... Third chamber, 9... Cooler,
1゜...Blower, 11...Front cooler cover, 12...Rear cooler cover, 13...
・Defrost water tray, 16...Blower duct, 16...
...Upstream outlet, 17...Downstream outlet, 23...Cover plate, 24...Rep. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 16- Upstream area '40 soil exit Figure 3 Figure 4

Claims (1)

[Claims] A refrigerator main body in which a heat insulating material is filled between an outer box and an inner box, a partition wall that partitions the inner box into upper and lower parts, a freezer compartment partitioned by the partition wall, a refrigerator compartment, and a lower part of the partition wall. a third chamber provided in the refrigerator, a cooler provided at the back of the freezer compartment, a cooler cover that covers the front of the cooler, a blower for stirring cold air, and a defrosting device provided below the cooler. Equipped with a water tray,
Approximately L located on the side of the cooler and below the defrost water tray
A letter-shaped ventilation duct, a refrigerating room in the horizontal part of the ventilation duct, and an upstream discharge port and a downstream discharge port for distributing cold air to the third compartment are provided, and are arranged directly below the vertical part of the ventilation duct. The refrigerator is provided with a cover plate that is inclined upwardly on the upstream side and downwardly on the downstream side, directly above the upstream side discharge port.