JPH0514065Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a temperature control device for controlling the amount of cold air discharged into a refrigerator or the like.

Prior Art A conventional example will be explained with reference to FIGS. 6, 7, 8, and 9. 1 is a temperature control device, which includes a thermal damper 2, a cold air duct 3, and a cold air duct 3.
It is composed of a rectangular cold air discharge port 4 provided at the end of the damper thermostat 2, a heat insulating material 5 having the cold air discharge port 4 provided therein. The Batsuful Damper Thermo 2 includes a main body 2a with a built-in bellows filled with fluorocarbon gas, a heat-sensitive cylinder 2b, and an arm 2.
c, a rectangular buttful 2d attached to an arm 2c.

The heat insulating material 5 forms a cold air discharge air path 6 and an internal discharge port 7 . 8 and 9 are temperature control devices 1, respectively.
A heat insulating wall A and a heat insulating wall B forming the mounting part of the
10 is a refrigerator room.

The operation of the temperature control device configured as described above will be explained below.

The cold air from the cold air duct 3 is discharged into the refrigerator compartment 10 through the cold air discharge passage 6 formed by the cold air discharge port 4 and the heat insulating material 5, and the internal discharge port 7, but the amount of discharged cold air is determined by the damper thermostat. Controlled by 2. The internal temperature of the refrigerator compartment 10 is detected by the heat-sensitive tube 2b of the damper thermostat 2, and the lower the internal temperature, the more the bellows of the thermostat body 2a contracts, and the arm 2c moves toward the cold air outlet 4, causing a full 2d.
This reduces the amount of cold air discharged from the cold air discharge duct 3. Conversely, when the temperature inside the refrigerator becomes high, the arm 2c moves toward the anti-cold air discharge port 4 side to increase the amount of cold air discharged.
Through the above-described operations, the temperature inside the refrigerator compartment 10 is kept constant.

Problems to be Solved by the Invention However, in the above configuration, when the outside air temperature becomes low and the opening degree of the exhaust valve 2d becomes small, and the amount of cold air discharged from the cold air discharge port 4 becomes small,
Since the flow of cold air is small, moist warm air in the refrigerator compartment 10 flows into the cold air discharge air passage 6 through the internal discharge port 7, and frost forms in the damper thermostat 2 and the cold air discharge air passage 6. It was hot. In particular, at the corner A of the buttful 2d, the wind speed of the dehumidified cold air sent from the duct 3 is lower than in other parts of the buttful 2d, and the sublimation effect is small, so frost formation is easy to occur and frost develops from this part, causing the buffetful to form. It had the disadvantage of causing 2d freezing.

In view of the above-mentioned points, the present invention provides a temperature control device that can eliminate the problem of full freezing.

Means for Solving the Problems In order to achieve this object, the present invention is such that the peripheral corner of the buffle of the damper thermostat in the temperature control device is formed into an arc shape.

Function: The present invention has the above-described structure to increase the speed of cold air at the peripheral corners of the butthole where warm moisture from the refrigerator compartment tends to form frost, and to sufficiently increase the sublimation effect to prevent frost from forming on the butthole. This prevents freezing.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, 4, and 5. In addition, the same reference numerals are given to the same configuration as the conventional one, and detailed explanation thereof will be omitted. 1' is the temperature control device of the present invention;
2' is a damper thermostat installed inside the heat insulating material 5, and a rectangular buffle 2d' having a size to cover the cold air discharge hole is attached to the arm 2C.

The circumferential edge of the baffle 2d' is formed in a circular arc shape so that there is no corner, and the baffle 2d in the conventional example has a configuration in which a circular arc is formed at the corner A. The size of the arc-shaped part is 10% or more (for example, 20%) of the length of the short side of the periphery of the full d
It is becoming.

In this configuration, the cold air flowing out into the cold air discharge air path 6 via the cold air duct 3 and the cold air discharge port 4 is discharged at the buffer 2d' according to the internal temperature of the refrigerator compartment 10 detected by the heat sensitive tube 2b. The amount of cold air is controlled in the same way as in the conventional example.

FIG. 5 shows the relationship between the wind speed at the section C and the size of the arc-shaped section at the section C in the baffle 2d' when the opening degree of the baffle 2d' is kept constant. As the arcuate portion is made larger, the wind speed in the section C increases (the size of the arcuate portion has a limit in relation to the cold air discharge port 4). In the case of this embodiment, the wind speed in the C part is 80% of that in the B part, and is 50% higher than the 30% in the case where there is no arcuate part.

By increasing the wind speed in the area H, the sublimation effect in the area H increases, and frost formation in the area H is prevented.

Effects of the Invention As is clear from the above explanation, the present invention forms the buff-full peripheral corner of the damper thermostat in the temperature control device into an arc shape.
Because the distance between the edge of the edge of the edge where frost tends to form and the cold air outlet becomes shorter, the wind speed at the edge of the edge of the edge of the edge of the edge of the edge of the edge becomes shorter, and the sublimation effect increases, which prevents frost from forming on the edge of the edge of the edge of the edge of the edge of the edge of the edge of the edge of the edge of the edge of the edge of the edge than the cold air outlet. be.

[Brief explanation of the drawing]

FIG. 1 is a front view of a temperature control device showing an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a front view of a damper thermostat in an embodiment of the temperature control device of the present invention, and FIG. Figure 5 is a side view of the same side, Figure 5 is a diagram showing the relationship between the size of the arc-shaped part of the buttful peripheral corner of the damper thermostat and the wind speed at the same part, Figure 6
7 is a front view of the conventional temperature control device, FIG. 7 is a side view of the same, FIG. 8 is a front view of a damper thermostat in the conventional temperature control device, and FIG. 9 is a side view of the same. 1'...Temperature adjustment device, 2'...Damper thermostat, 2d'...Bassful, 4...Cold air discharge port, 5...Insulation material, 6...Cold air discharge air path, 7...
Internal outlet.

Claims (1)

[Scope of utility model registration request] It consists of a rectangular cold air discharge port, a rectangular-sized buttful located on the leeward side that covers the cold air discharge hole, and a damper thermostat that moves this buttful, and the buttful has a rectangular shape that covers the cold air discharge hole, In addition, the temperature control device has a peripheral edge corner shaped like an arc.