JPH03225177A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent a space above an ice making pan from becoming humid upon starting ice making and prevent frosting on a partition plate above the ice making pan by a method wherein the inside of a thermocase communicates with an ice making corner through a communicating port and is communicates with a returning air passage through a penetrating port. CONSTITUTION:A thermocase 15 receives a temperature sensor 10, controlling the temperature of a freezing chamber, while the temperature sensor 10 is supported by a supporting fitting 15a. A communicating port 15b communicates with an ice making corner 8a with the inside of the thermocase 15 to detect the temperature of the freezing chamber 2. A penetrating port 15c communicates with the inside of the thermocase 15 with a freezing chamber returning air passage 14. According to this constitution, moisture above the ice making pan 8 enters into the thermocase 15 through the communicating port 15b of the thermocase 15 upon starting ice making, then, the moisture is induced from the penetrating port 15c of the thermocase 15 and, therefore, the humidity above the ice making pan 8 is reduced whereby frosting on the partition plate 11 above the ice making pan 8 can be prevented.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a refrigerator having an ice tray.

2. Prior Art A conventional refrigerator with an ice tray was the NR-D32V1 electric refrigerator released by Matsushita Electric Industrial Co., Ltd. in September 1989.

This conventional example will be explained below with reference to FIGS. 6 to 8.

As shown in the figure, 1 is a refrigerator main body, 2 is a freezer compartment, 3 is a cooler provided at the back of the freezer compartment, 4 is a defrost heater provided at the bottom of the cooler 3, and 6 is a blower. 6 is cooler 3
7 is a water storage box, and 8 is an ice tray. 9 is a thermo case that houses a temperature sensor 1Q that controls the temperature of the freezer compartment; 9a is the temperature sensor 1;
0, and 11 is a partition plate that partitions the storage portions of the water storage box 7 and the ice cube tray 8. The ice making corner 6a is an opening provided in the duct 6 for discharging cold air to the freezer compartment 2, and 6b is the opening provided in the duct 6 for discharging cold air to the ice making corner 8a.
This is the discharge port provided in the. Reference numeral 12 denotes a bottom plate provided on the bottom surface of the freezer compartment 2, and a return air path 14 of the freezer compartment 2 is formed by the bottom surface 13 of the freezer compartment and the bottom plate 12. The thermo case 9 has an ice making corner 8 for sensing the temperature of the freezer compartment 2.
A communication port 9b is provided to communicate between the inside of the thermo case 9 and the inside of the thermo case 9.

In the above configuration, the cold air cooled by the cooler 3 is sent to the duct 6 by the blower 5, and in the duct 6, the opening 6a,
Cold air is distributed to the discharge port 6b.

Then, the cold air that comes out from the opening 6a circulates through the freezer compartment 2,
Return to the return air path 14. Further, the cold air discharged from the discharge port 6b also circulates above the ice tray 8 and returns to the return air path 14. The frost adhering to the cooler 3 is periodically defrosted by the heat generated by the defrosting heater 4.

Problems to be Solved by the Invention In such conventional refrigerators, there is a problem in that when ice making starts, the area above the ice making tray 8 becomes humid and frost forms on the partition plate 11 of the ice making tray 8.

The present invention solves the above problems and aims to provide a refrigerator that prevents frost from forming on the top of the ice tray.

Means for Solving the Problems In order to achieve the above object, the present invention provides a freezer compartment, a cooler provided at the back of the freezer compartment, and a defrost heater provided at the bottom of the cooler.
a blower for blowing air cooled by the cooler; a duct for distributing the cooled air; a bottom plate provided on the bottom of the freezer; a return air path of the freezer formed by the bottom plate and the bottom of the freezer; A temperature sensor for controlling the temperature of the freezer compartment, a thermo case attached to the lower part of the side wall of the freezer compartment to accommodate the temperature sensor, an ice tray with a royal opening, and the thermo case and the bottom plate to accommodate the ice tray. an ice-making corner formed by a partition plate that partitions a top surface and a side surface, an outlet provided in the duct at the back of the ice-making corner, and a communication provided in the thermocase that communicates the interior of the thermocase with the ice-making corner; A through-hole is provided which is formed by an opening and communicates the inside of the thermocase with the return air path.

Function: With the above-described configuration, the present invention is provided with a through hole that communicates the inside of the thermo case with the return air path, so that the moisture above the ice making tray at the start of ice making passes through the inside of the thermo case and is sent to the return air path. Therefore, high humidity can be prevented and frost can be prevented from forming on the partition plate above the ice tray.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4. Note that the same parts as those in the conventional example are designated by the same reference numerals, and a description of the structure will be omitted.

Reference numeral 16 denotes a thermocase that houses the temperature sensor 10 that controls the temperature of the freezer compartment, 16a a support that supports the temperature sensor 10, and 16b that connects the ice making corner 8a and the inside of the thermocase 15 to detect the temperature of the freezer compartment 2. A communication port that communicates with
15c is a through hole that communicates the inside of the thermo case 16 with the freezer compartment return air passage 14.

In the above configuration, at the start of ice making, moisture above the ice tray 8 enters the circuit case 9 through the communication port 16b of the thermo case 15, and returns to the circuit 14 through the through hole 15c of the thermo case 715.
This causes the humidity above the ice cube tray 8 to drop below.

As described above, according to the embodiment of the present invention, the ice making container 8a and the inside of the thermo case 16 are communicated through the communication port 15b, and the through hole 15c is provided to communicate the inside of the thermo case 15 with the return air passage 14. Therefore, the moisture above the ice tray 8 is attracted to the return air path 14, the humidity above the ice tray 8 is reduced, and frost formation on the partition plate 110 above the ice tray 8 can be prevented.

Furthermore, when restarting after defrosting, the return air passage 14 and the inside of the thermocase 15 are in communication through the through hole 15c, so the temperature sensor 10 is not affected by the heat of the vibration isolation heater 4 until it reaches the ○N operating temperature. It also has the effect of ensuring that the temperature of the load inside the refrigerator does not rise too much after defrosting.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the ice making corner and the inside of the thermo case are connected through a communication port, and the through hole is provided to communicate the inside of the thermo case with the return air passage, so that ice making can be started easily. To prevent the upper part of an ice tray from becoming humid and to prevent frost formation on a partition plate above the ice tray. Furthermore, it is possible to provide a refrigerator in which the temperature of the temperature sensor can be reliably raised to the ON operating temperature upon restarting after defrosting, and the temperature of the internal valve cargo after defrosting can be prevented from increasing.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a thermo case of a refrigerator according to the present invention;
Fig. 2 is a perspective view of the refrigerator, Fig. 3 is a vertical sectional view of Fig. 2, Fig. 4 is a front view of Fig. 2, and Fig. 6 is a perspective view of the thermo case of a conventional refrigerator. Figure 6 is a perspective view of the refrigerator.
7 is a longitudinal sectional view of FIG. 6, and FIG. 8 is a front view of FIG. 6. 2... Freezer compartment, 3... Cooler, 4...
...Defrost cover, 5...Blower, 6...
・Duct, 6b...Discharge port, 8...Ice tray, 8a...Ice making corner, 1o...Temperature sensor, 11...Partition plate , 12...Bottom plate, 13...Lower surface of the freezer compartment, 14...Return air path, 15...Thermo case, 16b...
...Communication port, 15C-°・°...through port.

Claims (1)

[Claims] A freezer compartment, a cooler provided at the back of the freezer compartment, a defrosting heater provided at the bottom of the cooler, a blower that blows air cooled by the cooler, and a duct that distributes the cooled air.
A bottom plate provided on the bottom of the freezer compartment, a return air path of the freezer compartment formed by the bottom plate and the lower surface of the freezer compartment, a temperature sensor for controlling the temperature of the freezer compartment, and a lower part of the side wall of the freezer compartment to house the temperature sensor. An ice-making corner formed by the attached thermo case, an ice-making tray with an open top, a partition plate that partitions the thermo-case, the bottom plate, the top surface, and the sides for storing the ice-making tray, and the back of the ice-making corner. A through hole is formed by a discharge port provided in the duct of the section, and a communication port provided in the thermocase that communicates the inside of the thermocase with the ice making corner, and that communicates the inside of the thermocase with the return air passage. A refrigerator with a mouth.