JP2654260B2 - Freezer refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator for controlling the temperature in a refrigerator compartment by cooling air sent from a refrigerator compartment.

[0002]

2. Description of the Related Art As a damper portion used in a refrigerator, there is known a damper disclosed in the prior art of Japanese Utility Model Publication No. 1-13985. An example in which the damper portion is used in a refrigerator-freezer will be described with reference to FIG. 7. In this refrigerator-freezer, a freezer compartment 3 and a refrigerating compartment 4 are separated from each other by a partition wall 2 made of a heat insulating material. A cold air inlet 7 for sending cold air from the freezer compartment 3 to the refrigerator compartment 4 is formed in the partition wall 2 between the compartment 3 and the refrigerator compartment 4, and a damper portion 9 is provided on the refrigerator compartment 4 side with respect to the cold air inlet 7. A driving damper plate 18 is provided to be freely opened and closed. The damper
The heat insulating part 12 surrounding the part 9 is provided, and the heat insulating part 12 is provided with a hole 27 for inserting the temperature control part 10 connected to the damper part 9.

In such a configuration, the temperature control unit 10
When the temperature of the refrigerating compartment 4 is higher than the temperature set in the above, the damper unit 9 drives the damper plate 18 rightward in the drawing. Accordingly, the interval between the damper plate 18 and the cold air inlet 7 from the freezing room 3 to the refrigeration room 4 increases, and the cool air from the freezing room 3 is sent into the refrigeration room 4 to reduce the temperature in the refrigeration room 4. Lower. When the temperature in the refrigerating compartment 4 decreases and the temperature falls below the temperature set by the temperature control unit 10, the damper unit 9 drives the damper plate 18 to the left in the drawing.
As a result, the interval between the damper plate 18 and the cold air inlet 7 becomes smaller, the flow rate of the cool air from the freezing room 3 to the cold room 4 decreases, and the temperature inside the cold room 4 rises.

[0004]

However, according to the above-described structure, the cold air in the refrigerator compartment enters the damper through the gap between the temperature control section and the hole for inserting the temperature control section, and enters the damper section. The cold air adhering and being sent out from the cold air inlet causes freezing, so that the damper unit does not operate.

It is an object of the present invention to prevent cold air from entering through a gap between a temperature control section and a hole into which the temperature control section is inserted, and to prevent the damper section from freezing due to dew.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a refrigerating refrigerator in which the temperature in a refrigerating compartment is adjusted by the cool air sent from the refrigerating compartment, and the introduction of cold air for sending out the cool air from the refrigerating compartment. A damper section that opens and closes the cold air inlet and adjusts the amount of cold air sent from the cold air inlet to the cold room through the cold air outlet, an insulating section provided between the damper section and the cold chamber, A temperature control section which is inserted through the hole formed in the section and is connected to the damper section to set the temperature in the refrigerator compartment provided in the refrigerator compartment; and a damper section through a gap between the temperature control section and the heat insulating section. Seal portions provided on both surfaces of the heat insulating portion on the refrigerator room side and on the damper portion side to prevent intrusion of cold air entering the refrigerator room, and a heat insulating portion formed between the both seal portions; Passage from the section to the cool air outlet It is those provided.

[0007]

The cold air that has entered through the gap between the temperature control section and the hole for inserting the temperature control section is first prevented from entering by the seal provided on the refrigerator side of the heat insulating section. However, in the event that cold air enters through the seal provided on the refrigerator side of the heat insulating section, the cold air is prevented from entering the damper again by the seal provided on the damper side. In addition, the cool air that has been prevented from entering is sent to the cool air outlet through a passage provided in the heat insulating portion, and is sent out again into the refrigerator compartment.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 1 denotes an under-counter type refrigerator-freezer main body, and the inside of the refrigerator-freezer refrigerator 1 is partitioned into a left freezer compartment 3 and a right freezer compartment 4 as shown in FIG. I have. In front of the freezer compartment 3 and the refrigerator compartment 4, a heat-insulating opening / closing door 5 that can be opened and closed is provided. Reference numeral 6 denotes a machine room door which can be opened and closed. A heat exchange chamber (not shown) in which a plate fin type cooler (not shown) and a cooling unit (not shown) such as a cooling air circulation fan are housed above the machine room door. The heat exchange chamber is connected to open the side surface and communicate with the freezer compartment 3.

The partition wall 2 is provided with a cool air inlet 7 at an upper portion for guiding cool air cooled by the cooling unit and sent to the freezing room to the cold room 4, and refrigerated corresponding to the cool air inlet 7. A cool air delivery unit 8 is provided on the chamber 4 side.

The cool air sending section 8 includes a damper section 9, a temperature control section 10, a blower fan 11, a heat insulating section 12, a seal section 13, the damper section 9, the temperature control section 10, and the blower fan 11. And a fan casing 14 which is a case for accommodating the heat insulating portion 12 and the seal portion 13.

The damper section 9 includes a damper thermo 15
And a damper case 16, and a damper thermo 15 is provided in the refrigerator compartment 4 provided below the fan casing 14.
A thermo-sensitive tube 17 for measuring the temperature in the chamber, a damper plate 18 serving as a lid of the cold air inlet 7 on the side of the refrigerator compartment 4 for opening and closing the cold air inlet 7, and the damper plate 1.
A damper arm 19 for attaching a top end to the damper plate 8 to transmit a driving force to the damper plate 18;
9, a damper thermo-drive unit 20 connected to the damper thermo-sensitive tube 17 and driving the damper arm 19 based on the temperature set by the temperature control unit 10 and the temperature measured by the damper thermo-sensitive tube 17. The damper case 16 has a cold air inlet 7a formed at the upper part thereof, which communicates with the cold air inlet 7 provided in the partition wall 2, and the damper plate 18 is located at a position where the damper plate 18 can open and close the cold air inlet 7a. Place the damper thermo 15 and
A heater 21 is provided around the cool air inlet 7a so that the cool air inlet 7a and the damper plate 18 are not frozen by dew.

The temperature control section 10 is provided with a temperature control knob 22 for operating to set the temperature in the refrigerator compartment 4.
And a temperature control shaft 23, which is operable from the inside of the refrigerator compartment 4, is inserted through a later-described fan casing heat insulating material 24, and is connected to the side surface (the right side in FIG. 1) of the damper drive unit 20. ing.

The blower fan 11 is provided with the damper section 9.
(The front side in FIG. 1), the cold air to be sent out by opening the damper plate 18 is forcibly sent out into the refrigerator compartment 4.

The heat insulating portion 12 is provided between the inner surface of the fan casing 14 and the damper case 16 so that cold air in the refrigerator compartment 4 is not transmitted to the damper thermostat 15 and the freezer compartment 3 through the fan casing 14. And a damper provided between the damper case 16 and the partition wall 2 to prevent cold air in the refrigerator compartment 4 and the freezer compartment 3 from being transmitted to the damper case 16. It is constituted by the case heat insulating material 25.

The fan casing insulating material 24 includes a cool air passage 26 for guiding cool air from the cool air inlet 7 to the blower fan 11, a hole 27 for the temperature control unit 10 to be inserted, and a hole 27 A passage 28 is provided extending obliquely downward from 27 and communicates with a cool air outlet 34 described later.
The passage 28 also functions as a passage for discharging moisture generated by dew.

The damper case heat insulating material 25 includes a housing part 29 for housing the damper thermo-drive part 20, the cold air inlet 7 provided in the partition wall 2, and the damper case 16.
Cold air inlet 7 communicating with the cold air inlet 7a provided at
b.

The fan casing 14 comprises a fan casing main body 30 and a temperature control section insertion section 32 having a hole 31 into which the temperature control section 10 is inserted. Adjusting part insertion part 3
2 for inserting the second fan 2 and the blower fan 11
Thus, a cool air outlet 34 for forcibly sending cool air is formed.

The seal portion 13 is provided with a fan casing insulating material 2 for preventing cold air in the refrigerator compartment 4 from entering through a gap between the hole portion 27 and the temperature control portion 10.
4, a sealing material 35 provided between the refrigerator compartment 4 and the temperature control portion insertion portion 32, and a sealing material 36 provided between the fan casing insulating material 24 and the damper case 16 on the damper portion side. It is composed of The sealing members 35 and 36 are made of an elastic material, and form holes 37 and 38 into which the temperature control unit 10 is inserted, and the holes 37 and 38 have a size that does not allow a gap with the temperature control unit 10. It is a structure of.

In the above configuration, when the temperature in the refrigerator compartment 4 rises and the temperature of the damper thermo-sensitive tube 17 detects the temperature and rises above the temperature set by the temperature control knob 22,
The damper arm 19 is driven rightward in FIG. Along with this, the cold air inlet 7 from the freezing room 3 to the cold room 4
The distance between the damper plate 18 and the cooling air from the freezing compartment 3 is increased, and the cold air from the freezing compartment 3 passes through the cold air introducing port 7, passes through the cool air passage 26 provided in the fan casing insulating material 24, and enters the refrigerator compartment 4 by the blower fan 11. Then, the temperature of the refrigerator compartment 4 is lowered.

When the temperature in the refrigerating compartment 4 drops and the temperature detected by the damper thermo-sensitive tube 17 falls below the set temperature, the damper arm 19 is driven to the left in FIG. As a result, the interval between the damper plate 18 and the cold air inlet 7 becomes smaller, the flow rate of the cold air from the freezing room 3 to the cold room 4 decreases, and the temperature inside the cold room 4 rises.

At this time, the damper 9 may enter the damper 9 through a gap between the temperature control knob 22 and the hole 31 provided in the temperature control unit insertion portion 32 and the hole 27 provided in the fan casing heat insulating material 24. The cold air in the refrigerator compartment 4 is prevented from entering because the seal member 35 on the refrigerator side is provided without a gap with the temperature control unit 10.

If cold air in the refrigerator compartment 4 intrudes from the sealing material 35, the sealing material 36 on the damper case side is again used.
Thus, the cold air which has entered the gap between the temperature control unit 10 and the hole 27 is sent out from the passage 28 and sent out again to the refrigerator compartment 4 by the blower fan 11. Also,
Water droplets that have condensed on the temperature control unit 10 due to the cold air in the refrigerator compartment 4 that has entered are also discharged from the passage 28.

[0023]

According to the present invention, the cold air in the refrigerating compartment which tries to enter the damper through the gap between the temperature regulator and the hole for inserting the temperature regulator is transferred to the damper by the sealing material on the refrigerating compartment side. Intrusion is prevented. Therefore, since cold air does not reach the damper thermostat, it is possible to prevent icing due to dew on the damper part. Furthermore, if cold air in the refrigerator compartment enters the gap between the temperature control part and the hole from the sealant on the refrigerator compartment side, the seal material on the damper case side again prevents the intrusion into the damper part and regulates the temperature. The cold air that has entered the gap between the hole and the hole can be sent out again to the refrigerator compartment through the cool air outlet from the passage. Also, water droplets that have condensed on the temperature control unit due to the cold air in the refrigerator compartment that has entered can be discharged from the passage.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a main part showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a cool air delivery unit.

FIG. 3 is a front perspective view of the refrigerator-freezer in which a front surface is opened and a part is broken.

FIG. 4 is an enlarged perspective view of a fan case heat insulating material.

FIG. 5 is a rear perspective view of the cool air delivery unit.

FIG. 6 is a top view of the cool air delivery unit.

FIG. 7 is a vertical sectional side view of a cool air sending section of a refrigerator according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Freezer room 4 Refrigerator room 7 Cold air inlet 9 Damper part 10 Temperature control part 12 Heat insulation part 13 Seal part 27 Hole part 28 Passage 34 Cold air outlet

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kakuji Kume 2-18 Keihanhondori, Moriguchi City Sanyo Electric Co., Ltd. (56) References Japanese Utility Model Sho 58-141178 (JP, U) Japanese Utility Model Sho 61- 54176 (JP, U)

Claims (1)

(57) [Claims] 1. A refrigerator for controlling the temperature in a refrigerator compartment by cold air sent from a freezer compartment, a cold air inlet for sending out cold air from the freezer compartment, and opening and closing the cold air inlet to open and cool the cold air inlet. A damper portion for adjusting an amount of cold air to be sent to the refrigerator compartment through the outlet, an insulating portion provided between the damper portion and the refrigerator compartment, and the damper portion being inserted through a hole formed in the thermal insulation portion. A temperature control unit connected to the refrigerator compartment for setting a temperature inside the refrigerator compartment, and for preventing intrusion of cold air in the refrigerator compartment entering the damper unit through a gap between the temperature control unit and the heat insulating unit. Seal portions provided on both sides of the refrigerator compartment side and the damper portion side of the heat insulating portion ,
A refrigerator formed in the heat insulating portion between the two seal portions and having a passage extending from the hole portion to the cool air outlet.