JPH0732473U - refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a highly reliable air path system that enables stable temperature control without dew condensation on the baffle or ice formation between the baffle and the fixed plate. With the goal. [Structure] A damper thermostat 7 for adjusting the temperature by adjusting the amount of cold air blown into the refrigerating compartment 2, and the damper thermostat.
To the cold air trap 21 formed downstream of the moth 7, the upper outlet 11 for blowing cold air to the cryogenic container 10 provided above the trap upper surface 22 of the cold air trap 21, and to the refrigerating chamber 2 provided below the trap surface 22. It constitutes a refrigerating compartment outlet 12 that blows out cool air.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing a damper thermostat from malfunctioning due to freezing.

[0002]

[Prior art]

 In recent years, refrigerators are suitable for storage at a temperature around 0 degrees by using a low temperature container to store at an appropriate temperature.

A conventional device for preventing malfunction due to freezing of a damper-thermo for controlling the temperature of a cryogenic container of a refrigerator is disclosed in Japanese Utility Model Publication No. 61-33502.

Hereinafter, a conventional malfunction prevention device due to freezing of the damper / thermo of the refrigerator will be described with reference to the drawings.

Reference numeral 1 denotes a partition wall, which is divided into a freezing compartment (not shown) and a refrigerating compartment 2 and is provided with a ventilation path 4 for guiding cool air from the freezing compartment to the refrigerating compartment 2 in a heat insulating material 3 above the back of the refrigerating compartment 2. An inlet 6 is provided at the lower end of the ventilation passage 4 and the corresponding portion of the inner box 5 for introducing cool air to the refrigerating chamber 2.

Further, the damper property 7 is fixed to the fixed plate 8 and a cushioning property for sealing a gap with the inner box 5 so as to correspond to the inlet 6 provided in the fixed plate 8. It is fixed to the inner box 5 via a heat insulating tape 9 having.

Further, an upper outlet 11 for blowing out cool air to a low temperature container 10 formed of a heat insulating material and installed above the refrigerating compartment 2 is provided above, and a refrigerating room is provided below for ejecting cool air to the refrigerating compartment 2. A heat insulating case 13 having a blowout port 12 is attached to the peripheral wall of the fixed plate 8 so as to be in pressure-tight contact with the peripheral wall of the fixed plate 8. The space surrounded by the heat insulating case 13 and the fixed plate 8 serves as an air passage 14. ing.

A decorative panel 15 is fixed to the outside of the heat insulating case 13, and a temperature control dial 16 inserted into a shaft (not shown) of a damper thermo 7 is provided in a recess of the decorative panel 15. It is equipped. Reference numeral 17 is a heat-sensitive cylinder of the damper-thermo 7, and 18 is a baffle of the damper-thermo 7, and the opening degree is adjusted by the temperature detected by the heat-sensitive cylinder of the inlet 6. Reference numeral 19 denotes a guide wall, which is integrally provided with the heat insulating case 13 so as to be in pressure contact with the fixing plate 8 so as to be airtight. The tip of the guide wall 19 has a height up to the upper edge of the baffle 18.

[0009]

[Problems to be solved by the device]

 However, in the above conventional configuration, when the operation of the compressor and the fan motor is stopped, the cool air flowing from the upper part of the ventilation passage 4 by natural convection flows from the inlet 6 as shown by the solid line arrow in FIG. When it flows into the passage 14, the flow is stopped by the guide wall 19 and collects in the air passage 20 sandwiched by the guide walls 19, reaches the upper end of the guide wall 19 and overflows into the air passages 14 on both sides to the refrigerating room outlet 12. It flows toward you.

On the other hand, the moist cool air having a high temperature inside the refrigerating chamber 2 and the low temperature container 10 drawn in from the upper outlet 11 is cooled by the cool air from the ventilation passage 4 overflowing from the upper end of the guide wall 19. The flow is obstructed and flows toward the refrigerating compartment outlet 12 without touching the baffle 18 of the damper thermo 7.

However, at this time, when the door of the freezer compartment is opened, the moist cold air having a high temperature in the refrigerating compartment 2 and the low temperature container 10 is drawn upward by the cool air in the ventilation passage 4 so that the damper thermostat is used. The baffle 18 of 7 is touched and the ventilation path 4 is raised. At this time, there is a drawback that dew condensation is formed on the baffle 18 or that the baffle 18 and the fixing plate 8 are frozen.

The present invention solves the above-mentioned conventional problems and has a reliable temperature control that enables stable temperature control without dew condensation on the baffle or freezing between the baffle and the fixed plate. The purpose is to provide a high airway system.

[0013]

[Means for Solving the Problems]

 In order to achieve this object, the refrigerator of the present invention comprises a damper thermostat for controlling the temperature by controlling the amount of cold air blown into the refrigerating compartment, and a cold air trap formed downstream of the damper thermostat. An upper outlet for blowing cold air to a low temperature container provided above the trap upper surface of the cold air trap and a refrigerating chamber outlet for blowing cold air to a refrigerating chamber provided below the trap surface are configured.

[0014]

[Action]

 According to the refrigerator of the present invention, when the door of the freezing compartment is opened, the dry cold air in the cold air trap rises up the ventilation path when the freezer compartment door is opened. Since it is not drawn into the ventilation passage, condensation does not occur even if it touches the baffle of the damper-thermo, and this does not cause icing between the baffle and the fixed plate, so a stable temperature control is always possible and reliable. It is possible to provide a high airway system.

[0015]

【Example】

 Hereinafter, an embodiment of a refrigerator according to the present invention will be described with reference to the drawings. It should be noted that the same configurations as those of the conventional one are denoted by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a front view of a main part of a refrigerator according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG.

In FIG. 1, reference numeral 21 is a cold air trap formed in the heat insulating case 13 downstream of the damper thermo 7. An upper air outlet 11 for blowing cold air to the low temperature container 10 is provided above the upper surface 22 of the cold air trap 21, and a refrigerating compartment outlet 12 for blowing cold air to the refrigerating compartment 2 is provided on the side of the upper upper surface 22 opposite to the upper air outlet 11. is doing. Reference numeral 23 is a communication duct that connects the damper thermostat 7 and the cold air trap 21 formed in the downstream heat insulating case 13.

With respect to the refrigerator configured as described above, the flow of cold air when the door of the freezer compartment is opened will be described. When the door of the freezing compartment is opened, the cool air in the ventilation passage 4 rises, and then the dry cold air accumulated in the cold air trap 21 rises in the ventilation passage 4. After that, when the door of the freezing compartment is closed, the dry cool air descends down the ventilation passage 4 and collects in the cool air trap 21, and the high-temperature moist cool air inside the refrigerating compartment 2 and the low temperature container 10 is collected. Are not drawn into ventilation passage 4.

Therefore, a damper thermostat 7 for adjusting the temperature by adjusting the amount of cold air blown into the refrigerating compartment 2, a cold air trap 21 formed downstream of the damper thermostat 7, An upper air outlet 11 for blowing cold air to the cryogenic container 10 provided above the trap upper surface 22 of the cold air trap 21 and a refrigerating compartment outlet 12 for blowing cold air to the refrigerating compartment 2 provided below the trap surface 22 are configured. As a result, when the door of the freezing compartment is opened, the dry cold air in the cold air trap 21 rises in the ventilation passage 4, so that the moist cold air having a high temperature in the refrigerating compartment 2 and the low-temperature container 10 can be formed in the ventilation passage. Since it is not pulled in by 4, it does not cause dew condensation even if it touches the baffle 18 of the damper thermo 7 and it does not freeze between the baffle and the fixed plate 8 to enable stable temperature control at all times. Belief It is possible to provide a highly reliable wind path system.

[0020]

[Effect of device]

 As described above, the refrigerator of this embodiment includes a damper thermostat for controlling the temperature by controlling the amount of cold air blown into the refrigerating compartment, and a cold air trap formed downstream of the damper thermostat. The upper air outlet for blowing cold air to the cryogenic container provided above the trap upper surface of the cold air trap and the refrigerating chamber outlet for blowing cold air to the refrigerating chamber provided below the trap surface are constituted by: When the freezer compartment door is opened, the dry cold air in the cold air trap rises up the ventilation passage, and the high-temperature, moist cold air inside the refrigerating compartment or the low-temperature container is not drawn into the ventilation passage, so the damper is supported. -Providing a reliable air path system that enables stable temperature control at all times without causing dew condensation even if it touches the baffle of the mower or ice formation between the baffle and the fixed plate. it can

[Brief description of drawings]

FIG. 1 is a front view of a main part of an embodiment of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view of a main part of a conventional refrigerator

FIG. 4 is a front view of FIG.

[Explanation of symbols]

 7 Damper Thermo 21 Cold Air Trap 11 Upper Outlet 12 Refrigerator Outlet

Claims (1)

[Scope of utility model registration request] 1. A damper thermostat for controlling the temperature by adjusting the amount of cold air blown into a storage chamber, and the damper thermostat.
A cool air trap formed downstream of the trap, an upper outlet for blowing cold air to a cryogenic container provided above the trap upper surface of the cold air trap, and a refrigerating chamber outlet for blowing cold air to a refrigerating chamber provided below the trap surface. Refrigerator consisting of.