JP3719914B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the dew condensation in a damper part and also to contrive the effective utilization of in-refrigerator space, in a refrigerator which controls the quantity of chill to be supplied into a refrigeration chamber from a cooler by means of a damper thermometer. SOLUTION: A cooler 28 is arranged under a refrigeration chamber 12 provided on an upper stage, and also a blow-up duct 32 extending vertically for blowing up the chill from the cooler 28 to the upper end of the refrigeration chamber 12 is provided behind the refrigeration chamber 12, and a damper part 34 is provided at the upper end of this blow-up duct 32, and a damper thermometer 36 which controls the quantity of chill to be supplied into the refrigeration chamber 12 from the cooler 28 is arranged in the damper part 34. Moreover, a blow-out duct 38 for blowing out the chill from the damper part 34 from the specified position within the refrigeration chamber 12 is provided.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator, and more particularly, to a refrigerator that adjusts the amount of cold air supplied from a cooler to a refrigerator compartment by a damper thermo.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a refrigerator that adjusts the amount of cold air supplied from a cooler into a refrigerator compartment by opening and closing a damper according to the temperature of the refrigerator compartment. FIG. 5 is a cross-sectional view showing a conventional example of this type of refrigerator.
[0003]
The refrigerator 100 is a refrigerator-freezer provided with a refrigerator compartment 101 in the upper stage, a freezer compartment 102 in the middle stage, and a vegetable room 103 in the lower stage, and a cooler 104 and a blower fan 105 are disposed behind the freezer compartment 102. A duct 106 extending in the vertical direction is provided behind the refrigerating chamber 101, and the cool air generated in the cooler 104 is blown upward in the duct 106 by the blower fan 105, and is blown out from the front face of the duct 106. 107 is blown out into the refrigerator compartment 101.
[0004]
In the refrigerator 100, a damper portion 108 is provided at the lower end portion of the duct 106. That is, the damper unit 108 is provided behind a chilled room 109 that is a low-temperature compartment provided in the lowermost stage of the refrigerator compartment 101. A damper thermo 110 that controls the amount of cool air supplied from the cooler 104 into the duct 106 by opening and closing the cool air flow path from the cooler 104 is disposed in the damper unit 108.
[0005]
[Problems to be solved by the invention]
Generally, a damper thermo is a damper that changes the degree of opening and closing of a baffle by gas expansion and contraction due to temperature change in a refrigerator compartment, and is also called a gas pressure damper thermo or mechanical damper. Unlike a motor damper that opens and closes a baffle by operating a motor according to a signal corresponding to the temperature in the refrigerator compartment, such a damper thermo is linear in opening and closing operation. Therefore, depending on the temperature of the refrigerator compartment, the damper may not be completely closed and a small amount of cold air may leak. In such a case, in the arrangement of the conventional damper thermostat 110 shown in FIG. 5, the cool air does not rise to the upper part of the duct 106, and the cool air is accumulated around the baffle 110 a of the damper thermo 110, and thus condensation and icing occur in the damper portion 108. It will be. Therefore, conventionally, the dew-proof heater 111 is provided in the damper portion 108. However, when the dew-proof heater 111 is used, problems such as an increase in cost and an increase in power consumption occur.
[0006]
Further, in the above conventional structure, since the damper portion 108 is provided behind the chilled room 109, the depth dimensions of the frequently used chilled room 109 and the door pocket 112 are reduced, and the space in the warehouse is effectively utilized. There is also a problem that it is not done.
[0007]
The present invention has been made in view of the above points, and in a refrigerator that adjusts the amount of cold air supplied from a cooler to a refrigerator compartment by a damper thermo, it prevents condensation in the damper portion and effectively uses the space in the warehouse. It aims to plan.
[0008]
[Means for Solving the Problems]
The refrigerator of the present invention has a cooler disposed below the refrigerating room, and a blow-up duct extending in the vertical direction for blowing cool air from the cooler to the upper end of the refrigerating room is provided behind the refrigerating room. A damper part is provided at the upper end of the refrigeration unit, and a damper thermostat is provided in the damper part for adjusting the amount of cold air supplied from the cooler to the refrigerator compartment, and the cooler air from the damper part is placed at a predetermined position in the refrigerator compartment. A blow-out duct for blowing out from the blow-off duct, and the damper portion includes an inlet connected to an upper end of the blow-up duct and opened and closed by a baffle of the damper thermostat, and an outlet connected to the blow-out duct. And the lower edge of the outlet is provided along the bottom surface of the internal space of the damper portion .
[0009]
In the refrigerator of the present invention, the cool air in the cooler disposed below the refrigerating room is blown up to the upper end of the refrigerating room through the blowing duct provided behind the refrigerating room, and in the damper provided at the upper end. The flow rate is adjusted by the damper thermostat and blown into the refrigerator compartment.
[0010]
According to the present invention, since the damper portion is provided at the upper end of the blow-up duct behind the refrigerator compartment, even if a small amount of cold air leaks in a state where the damper thermo is not completely closed, the cold air naturally flows downward from the damper portion. There is no cool air in the flow and damper part. As a result, condensation and icing at the damper portion can be prevented, and a dew-proof heater is not required.
[0011]
Further, since the damper portion is provided at the upper end portion of the refrigerator compartment, it is possible to ensure a large depth dimension of a low-temperature compartment such as a chilled room provided at the bottom portion of the refrigerator compartment. In addition, since the depth of the uppermost shelf of the refrigerator compartment where the damper portion is arranged is an originally unusable part, it is possible to effectively utilize such unusable space.
[0012]
Also, the refrigerator of the present invention, the is blowing duct is provided for blowing cold air from a predetermined position of the refrigeration compartment from the damper portion, cold air is regulated by Danpasamo is blown from the air blowing duct in the refrigeration compartment Is done. In the damper portion, the outlet connected to the blowing duct is provided below the inlet connected to the blowing duct. Specifically, the lower edge of the outlet of the damper portion is lower than the lower edge of the inlet. That is, since it is set low, the cool air flowing into the damper portion from the inlet flows into the blowout duct from the outlet without stagnation, and it is possible to prevent condensation more reliably.
[0013]
In this case, it is preferable that the blowing duct is provided at the center in the width direction behind the refrigerator compartment, and the blowing duct extending in the vertical direction is provided on both the left and right sides of the blowing duct behind the refrigerator compartment. Thereby, the temperature distribution in the refrigerator compartment can be made uniform.
[0015]
In the refrigerator of the present invention, a low-temperature compartment may be provided in the refrigerator compartment, and an opening opened to the low-temperature compartment may be provided in the blowing duct. In this case, since the cold air flowing through the blowing duct can be directly supplied to a low temperature compartment such as a chilled room, a temperature difference between the low temperature compartment and the other refrigeration compartment can be easily established.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a side sectional view of a refrigerator 10 according to an embodiment of the present invention, and FIG. 2 is a front sectional view of the refrigerator 10.
[0018]
The refrigerator 10 of this embodiment is a refrigerator-freezer provided with the refrigerator compartment 12 in the upper stage, the vegetable compartment 14 in the middle stage, and the freezer compartment 16 in the lower stage. In the refrigerator compartment 12, storage shelves 18 are provided in a plurality of stages above and below, and a chilled room 20 that is a low-temperature compartment is provided at the bottom. A door pocket 22 is provided on the back surface of the door 13 of the refrigerator compartment 12. The vegetable compartment 14 and the freezer compartment 16 are drawer-type storage rooms provided with storage containers 24 and 26 that are pulled out together with the respective doors 15 and 17.
[0019]
A cooler 28 is disposed behind the freezer compartment 16, and a blower fan 30 that circulates the cold air generated in the cooler 28 in the cabinet is disposed behind the vegetable compartment 14 above it.
[0020]
Behind the refrigerator compartment 12, a blow-up duct 32 extending in the vertical direction is provided at the center in the width direction. The blow-up duct 32 is connected at its lower end to a cool air passage 29 in which a cooler 28 and a blower fan 30 are arranged, and extends upward therefrom and terminates at the uppermost stage of the refrigerator compartment 12. Thereby, the cold air from the cooler 28 disposed below is blown up to the upper end portion of the refrigerating chamber 12, that is, the uppermost stage through the blow-up duct 32 by the action of the blower fan 30.
[0021]
A damper part 34 for adjusting the amount of cold air supplied from the cooler 28 into the refrigerator compartment 12 is provided at the upper end of the blow-up duct 32, and a damper thermo 36 is provided in the damper part 34. .
[0022]
Behind the refrigerator compartment 12, a blowing duct 38 for blowing cold air from the damper portion 34 into the refrigerator compartment 12 extends downward from the damper portion 34. The blow-out ducts 38 are provided on both the left and right sides of the blow-up duct 32, and a blow-out port 40 for blowing cold air into the refrigerator compartment 12 is provided on the front surface. The blower outlet 40 is provided for each shelf 18 of the refrigerator compartment 12.
[0023]
The damper part 34 is formed by a foam insulation 42 made of styrene foam, and as shown in FIGS. 3 and 4, a damper thermo 36 is arranged inside the damper insulation 42. A damper inlet 44, which is a rectangular opening connected to the upper end of the blow-up duct 32, is provided on the rear surface of the damper insulation 42, and a rectangular inlet connected to the upper end of the blow-out duct 38 on both the left and right sides of the damper inlet 44. A damper outlet 46, which is a shaped opening, is provided. The damper outlet 46 is provided below the damper inlet 44 so that the cold air flowing into the damper portion 34 from the central inlet 44 flows into the blowout duct 38 without stagnation. In other words, the lower edge 46 a of the damper outlet 46 is set below the lower edge 44 a of the damper inlet 44, that is, at a lower position in the vertical direction of the refrigerator 10, and the cold air is between the inlet 44 and the outlet 46. There are no projections that serve as traps.
[0024]
The damper thermo 36 includes a baffle 48 that opens and closes the inlet 44 from the inside of the damper portion 34, and a heat sensitive portion 49 drawn out from the damper insulation 42, and the heat sensitive portion 49 detects the temperature in the refrigerator compartment 12, The degree of opening and closing of the baffle 48 is changed by the expansion and contraction of the gas due to the temperature change, and the amount of cold air blown into the damper portion 34 from the blowing duct 32 is adjusted.
[0025]
As shown in FIG. 3, a knob 50 that is a temperature adjusting unit of the damper thermo 36 is provided on the front surface of the damper unit 34 facing the refrigerator compartment 12. This knob 50 is exposed in the refrigerator compartment 12 so that it can be operated from the front of the refrigerator compartment 12. The front surface of the damper portion 34 is covered with a cover 51 except for the place where the knob 50 is disposed.
[0026]
As shown in FIG. 2, air outlets 52 for blowing out cool air to the uppermost shelf 18 a of the refrigerator compartment 12 are provided on the front surface of the damper portion 34 and on the left and right sides of the upper portion thereof. The cold air is blown out from the inside of the damper portion 34 into the refrigerator compartment 12 without passing through the damper outlet 46 from the air outlet 52.
[0027]
As shown in FIG. 3, the central blowing duct 32 is provided with an opening 54 opened to the chilled room 20. The opening 54 is an opening for directly supplying the cold air flowing through the blow-up duct 32 to the chilled room 20, and has a size of about ¼ of the outlet 40 provided in the blow-out duct 38.
[0028]
In the refrigerator 10 according to the present embodiment configured as described above, the cool air in the cooler 28 disposed below the refrigerating chamber 12 is provided by the blower fan 30 in the uppermost stage of the refrigerating chamber 12 through the central blowing duct 32. The damper part 34 is blown up. Then, the flow rate is adjusted by the baffle 48 of the damper thermo 36 at the inlet 44 of the damper portion 34 and enters the damper portion 34, and a part is blown into the refrigerator compartment 12 from the outlet 52 on the front surface of the damper portion 34. The cold air flows from the outlet 46 of the damper portion 34 to the left and right blow-out ducts 38 and is blown out into the refrigerator compartment 12 from the front blow-out port 40. Further, cold air flows directly into the chilled room 20 from the opening 54 provided in the blowing duct 32, and the chilled room 20 is cooled more than the other compartments in the refrigerator compartment 12.
[0029]
In the refrigerator 10, since the damper portion 34 is provided at the uppermost stage of the refrigerator compartment 12, even if a small amount of cold air leaks into the damper portion 34 without the damper thermo 36 being completely closed, the cold air is The air naturally flows downward from 34, and cold air does not accumulate in the damper portion 34. Therefore, condensation and icing at the damper portion 34 can be prevented.
[0030]
Further, the damper outlet 46 is provided below the damper inlet 44 so that the cool air flowing into the damper portion 34 from the inlet 44 flows from the outlet 46 to the blowing duct 38 without stagnation. I can plan.
[0031]
Further, the depth dimensions of the frequently used chilled room 20 and the door pocket 22 on the inner lower side of the door 13 are large. Moreover, since the depth of the uppermost shelf 18a of the refrigerator compartment 12 provided with the damper portion 34 is originally a poorly usable part, such a poorly usable space is effectively utilized.
[0032]
Further, the blow-up duct 32 is provided in the center of the refrigerator compartment 12 in the width direction, and the blow-out ducts 38 are provided on the left and right sides thereof so that the cold air is blown out symmetrically in the refrigerator compartment 12, so that the temperature distribution in the refrigerator compartment 12 is increased. Can be made uniform.
[0033]
Moreover, since cold air can be directly supplied to the chilled room 20 from the opening 54 provided in the blowing duct 32, a temperature difference between the chilled room 20 and the other compartments in the refrigerator compartment 12 can be easily set.
[0034]
Further, as compared with the conventional structure in which the damper portion is provided behind the chilled room, the temperature adjusting portion of the damper thermo 36 can be installed so as to be exposed from the front surface of the refrigerator compartment 12, so that the temperature adjusting knob 50 is provided. Can be directly attached to the damper thermo 36, and parts can be reduced.
[0035]
In addition, in the said embodiment, although the refrigerator compartment provided with the vegetable compartment 14 in the middle stage and the freezer compartment 16 in the lower stage was demonstrated, it can apply similarly also in the case of a freezer compartment in a middle stage, and a vegetable compartment in the lower stage.
[0036]
【The invention's effect】
Since it is a refrigerator of the present invention, since the damper part is provided at the upper end of the blow-up duct behind the refrigerator compartment, even if a small amount of cold air leaks in a state where the damper thermo is not completely closed, the damper part does not collect cold air, As a result, condensation and icing at the damper portion can be prevented, and a dew-proof heater is not required. In addition, it is possible to ensure a large depth dimension of a low-temperature compartment such as a chilled room provided at the bottom of the refrigerator compartment, and the depth of the uppermost shelf of the refrigerator compartment where the damper portion is arranged is an originally unusable part. For this reason, it is possible to effectively utilize such an inconvenient space.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view of a refrigerator according to an embodiment of the present invention.
FIG. 2 is a front sectional view of the refrigerator.
FIG. 3 is a partial longitudinal sectional view of the refrigerator compartment of the refrigerator.
FIG. 4 is a perspective view of a damper portion of the refrigerator.
FIG. 5 is a side sectional view of a conventional refrigerator.
[Explanation of symbols]
10 Refrigerator 12 Refrigerated room 20 Chilled room 32 Blowing duct 34 Damper portion 36 Damper thermo 38 Blowing duct 44 Damper inlet 46 Damper outlet 48 Baffle 54 Opening

Claims (1)

A cooler is disposed below the refrigerating room, and a blow-up duct extending in the vertical direction for blowing cool air from the cooler to the upper end of the refrigerating room is provided behind the refrigerating room,
A damper part is provided at the upper end of the blow-up duct, and a damper thermo that adjusts the amount of cold air supplied from the cooler to the refrigerator compartment is disposed in the damper part ,
A blowout duct for blowing out the cold air from the damper part from a predetermined position in the refrigerator compartment is provided,
The damper portion includes an inlet connected to an upper end of the blowing duct and opened and closed by a baffle of the damper thermo, and an outlet connected to the blowing duct, the outlet being provided below the inlet, and The refrigerator characterized by the lower edge of this exit being provided along the bottom face of the internal space of the said damper part .

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