JPH09152240A - Temperature controller for refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the temperature of cold air, sent out of an air outlet port directly without receiving any thermal effect of an ice making pan. SOLUTION: An automatic ice making machine 15 is provided in a freezing chamber. A cold air outlet port 30 is provided after the automatic ice making machine while a temperature sensor 31 is provided so as to be opposed to the air outlet port. The ice making pans 21 of automatic ice making machine 15 are provided at the upper part of the freezing chamber while ice receiving pans are arranged at the lower part of the freezing chamber. A mounting frame 20 is provided with a temperature sensor 31 at the outside of a side plate 26, partitioning the ice making pans 21, so as to be opposed to the cold air outlet port 30.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a temperature control device for a refrigerator.

[0002]

2. Description of the Related Art A conventional refrigerator of this type is disclosed, for example, in JP-A-62-62.
As described in JP-A-69079, cold air is blown from the rear of the freezing compartment, and a temperature sensor is provided on the ceiling of the freezing compartment to control the temperature in the freezing compartment.

[0003]

However, since the temperature sensor is provided on the ceiling in the freezer compartment of the conventional refrigerator, it is difficult for the cool air blown from the outlet to directly contact the temperature sensor, and between the freezer compartment and the cooler. There is a problem that the temperature of the cold air blown out from the air outlet that circulates through cannot be directly detected.

The present invention solves the above problem,
It is an object of the present invention to provide a temperature control device for a refrigerator capable of detecting the temperature of cold air blown directly from a blowout port without being affected by the thermal effect of an ice tray.

[0005]

According to the first aspect of the invention, an ice making chamber is provided in a compartment inside the freezing chamber, a cold air outlet is provided at the rear of the ice making chamber, and a temperature sensor is provided so as to face the outlet. In the temperature control device of the refrigerator provided, an ice tray is placed above the ice making chamber, and an ice tray is placed below the ice making chamber, and a partition wall is provided between the ice tray and a temperature sensor, and the influence of the temperature of the ice tray The temperature of the cool air blown out from the outlet can be detected without receiving it.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a refrigerator showing one embodiment of the present invention. FIG. 2 is a sectional view showing the freezer compartment of the present invention. FIG. 3 is a perspective view of the automatic ice maker of the present invention. FIG. 4 is a perspective view of a mounting frame of the automatic ice maker of the present invention.

A refrigerator 1 comprises a steel box outer box 2 opening forward, an inner box 3 made of hard synthetic resin opening front and incorporated in the outer box at intervals. The main body 5 is constituted by the foamed polyurethane heat insulating material 4 filled between the boxes 2 and 3 by an in-situ foaming method. The inner box 3 is divided into upper and lower parts by a partition wall 6, a refrigerating chamber 7 is formed on the upper side, and a freezing chamber 8 is formed in two stages on the lower side. The front opening of the refrigerator compartment 7 is a door 9 and the front opening of the freezer compartment 8 is a drawer door 1.
At 0, it is openably closed.

A U-shaped frame 11 whose one end is fixed to the rear surface is fixed to the drawer door 10. This frame is the main body 5
It is slidably fitted in the front-rear direction on a fixed rail 12 with a roller provided in the lower container 13 and is internally held by a lower container 13 which is divided into two left and right parts. Above this lower container is an upper container 14
And an automatic ice machine 15 are arranged.

At the back of the freezer compartment 8, there is provided a cooler compartment 19 which is partitioned by a partition wall 16 and accommodates a cooler 17 and a blower 18 arranged above the cooler. The partition wall 16 is provided with a slit 18A in front of the blower 18 in the freezer compartment 8 for blowing out the cool air cooled by the cooler 17.

The automatic ice maker 15 has a mounting frame 20 having an opening at the bottom and an ice tray 2 housed in this frame.
1 and a drive device 22 for rotating the ice tray. An ice tray 23 is formed on one side of the lower container 13 arranged below the ice tray 21.

The mounting frame 20 has a ceiling plate 24, side plates 25, 26, a front plate 27, and a rear plate 28 on the upper part, left and right, and the front and rear parts other than the lower part. On the side plate 26, a step portion 29 which is recessed toward the ice tray 21 side is formed on the rear side.

The rear plate 28 is provided with an outlet 30 for supplying the cool air blown out from the blower 18 into the mounting frame 20. This outlet is a step 29 of the side plate 26.
It is divided into two by.

Reference numeral 31 is a temperature sensor installed on the step portion 29 outside the ice tray 21, and this temperature sensor directly detects the temperature of the cold air blown out from the blowout port 30.
Further, the temperature sensor 31 has a slit 31A through which cold air can escape.
It is housed in a box 31B having.

The upper container 14 has one guide rail 32 provided on the main body 5 at the time of storage and the other guide rail 33 provided on the outside of the temperature sensor 31 of the mounting frame 20 of the automatic ice maker 15 fixed to the main body 5. Placed in the lower container 13
It is placed on the lower container 13 when it is pulled out. The guide rails 32, 33 are provided on the side wall 34 of the upper container 14.
And the side wall 36 of the lower container 13 mounted on the upper flange 35.
And a lower flange 37 that is locked to the upper end surface of the.

Reference numeral 38 denotes a water supply tank housed in the refrigerating compartment 7. The water in the water supply tank 38 is pumped by the pump 39 to the piping 4
It is supplied to the ice tray 21 of the freezer compartment 8 through 0.

Reference numeral 41 denotes a compressor for cooling the cooler 17, which is housed in a machine room 42 at the bottom of the main body 5 and its operation is controlled by a temperature sensor 31 such as a thermistor provided in the freezer compartment 8. Has been done.

In the temperature control device of the refrigerator thus constructed, when the compressor 41 is operated, the cooler 17 is cooled and the blower 18 causes the slit 18 in the freezer compartment 8.
Cold air is blown from A. A part of the cool air blown out from the slits flows into the mounting frame 20 through the blowout port 30 formed in the rear plate 28, and the water stored in the water supply tank 38 by the pump 39 is supplied to the ice tray 21. Frozen and making ice.

The temperature sensor 31 detects the temperature in the freezer compartment 8 to control the operation of the compressor 41 in accordance with the fluctuation of the load due to the food taken in and out of the freezer compartment.

The temperature sensor 31 is a side plate 2 as a partition wall.
By separating from the ice tray 21 by the step portion 29 of 8, the cold air blown out from the outlet 30 is diverted, and the cool air blown out from the blower 18 is not affected by the temperature of the water in the ice tray. The temperature can be detected directly. Therefore, the compressor 41 can be suppressed from operating with an unnecessarily high capacity. Further, the temperature sensor 31 is attached to the mounting frame 20 of the automatic ice maker 15 so that it can be provided so as to face the cool air blown into the freezer compartment 8 through the cooler 17.

The temperature sensor 31 is a box 3 having a slit.
By storing in the 1B, the cold air blown out from the blowout port 30 passes through the inside of the box 31B, and the temperature of the cold air can be directly detected.

[0022]

According to the first aspect of the invention, the ice making chamber is divided into the freezing chamber, the cold air blowout port is provided at the rear of the ice making chamber, and the temperature sensor is provided so as to face the blowout port. In the refrigerator temperature control device, the ice-making chamber has an ice-making tray above and an ice-receiving tray below, and since a partition wall is provided between the ice-making tray and a temperature sensor, the influence of the temperature of the ice-making tray is reduced. It is possible to detect the temperature of the cold air blown out from the outlet without receiving it.

[Brief description of the drawings]

FIG. 1 is a sectional view of a refrigerator showing one embodiment of the present invention.

FIG. 2 is a sectional view showing a freezer compartment of the present invention.

FIG. 3 is a perspective view of the automatic ice maker of the present invention.

FIG. 4 is a perspective view of a mounting frame of the automatic ice maker of the present invention.

[Explanation of symbols]

 1 Refrigerator 8 Freezer 15 Automatic ice machine 20 Mounting frame 21 Ice tray 23 Ice tray 26 Side plate (partition wall) 30 Blowout port 31 Temperature sensor

Claims (1)

[Claims] 1. A temperature control device for a refrigerator in which an ice making chamber is provided in a freezing compartment, a cool air outlet is provided at the rear of the ice making compartment, and a temperature sensor is provided facing the outlet. A temperature control device for a refrigerator characterized in that an ice tray is arranged above the chamber and an ice tray is arranged below the chamber, and a partition wall is provided between the ice tray and the temperature sensor.