JPH0113985Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a damper device for a cold air outlet in a refrigerator or the like.

(Prior Art) In refrigerators and the like that have a freezing compartment and a refrigerating compartment, cold air from the freezing compartment is guided to the refrigerating compartment to cool the refrigerating compartment.

FIG. 1 shows an example of a conventional refrigerator.

In this refrigerator, a freezer compartment 2 and a refrigerator compartment 3 are separated from each other by a compartment wall 1 made of a heat insulating material. A cold air port 4 for sending cold air from the refrigerator compartment 3 to the refrigerator compartment 3 is formed, and a damper plate 5 is provided on the refrigerator compartment 3 side with respect to the cold air port 4 so as to be movable forward and backward.

Further, a damper operating mechanism 6 is provided within the refrigerator compartment 3. In this damper actuation mechanism 6, the base end of an actuation plate 8 is rotatably attached to a container frame 7 around a support shaft 9, the damper plate 5 is attached to the tip of this actuation plate 8, and the actuation plate 8 is The damper plate 5 is moved forward and backward relative to the cold air outlet 4 by rotation. Further, a bellows 10 sealed with a fluid is provided in the container frame 7 so as to face one side of the actuating plate 8, and a communication pipe 11 is provided in the bellows 10.
A heat sensitive section 12 placed at a predetermined position in the refrigerating compartment 3 is connected to the heat sensitive section 12 via the above.

Further, a protrusion 13 protruding from the base end of the actuating plate 8
and an adjustment plate 15 whose one end is supported by a support shaft 14 on the container frame 7, a coil-shaped spring 16 is tensioned via an adjustment screw 17, and the spring 16 presses the actuation plate 8 by the bellows 10. It is biased in the opposite direction. Furthermore, the container frame 7
An eccentric cam 18 is rotatably provided via a cam shaft 19, and this cam 18 is brought into contact with the tip of the adjustment plate 15.

In such a configuration, when the temperature inside the refrigerator compartment 3 rises and the temperature of the heat-sensitive part 12 rises, the internal pressure of the bellows 10 rises, and the actuating plate 8 is rotated clockwise in the figure against the force of the spring 16. to move the damper plate 5 to the right in the figure. Along with this, the gap between the damper plate 5 and the cold air outlet 4 from the freezer compartment 2 to the refrigerator compartment 3 becomes larger, and the cold air from the freezer compartment 2 flows into the refrigerator compartment 3 through the cold air outlet 4. Lower the temperature.

When the temperature inside the refrigerator compartment 3 decreases and the temperature of the heat-sensitive part 12 decreases, the internal pressure of the bellows 10 decreases, and the force of the spring 16 rotates the actuating plate 8 counterclockwise in the figure, causing the damper plate 5 to rotate as shown in the figure. Move it to the left. As a result, the gap between the damper plate 5 and the cold air outlet 4 becomes smaller, the flow rate of cold air from the freezer compartment 2 to the refrigerator compartment 3 decreases, and the temperature inside the refrigerator compartment 3 increases.

Further, the temperature inside the refrigerator compartment 3 can be set, for example, by rotating a cam 18 having an eccentric shape as shown in FIG. This is done by varying the tension of the spring 16 facing the . For example, when setting the temperature inside the refrigerator compartment 3 to be high, the cam 18 is set to the "WARM" position, the tension of the spring 16 is made larger than that at the "NORMAL" position, and the desired temperature is set.

(Problem that the invention attempts to solve) In the above-mentioned device, this is
Since it is necessary to install the damper operating mechanism 6 with the cam 18 at the boundary between the refrigerator compartment 3 and the refrigerator compartment 3, the temperature cannot be set without opening the refrigerator door.

The present invention aims to improve the above-mentioned points and to enable the temperature of the refrigerator compartment to be easily and reliably set from outside the refrigerator or the like.

[Structure of the idea]

(Means for Solving the Problems) The present invention provides a freezer compartment and a refrigerator compartment that are separated from each other by a partition wall, and a partition wall between the freezer compartment and the refrigerator compartment that is provided with a partition wall that connects the freezer compartment to the refrigerator compartment. a cold air outlet for sending cold air to the cold air outlet, a damper plate provided to be able to move forward and backward with respect to the cold air outlet, and an actuating plate whose base end is rotatably attached to the container frame and the damper plate is attached to the distal end. , a bellows provided on the container frame facing one side of the actuation plate and connected to a heat-sensitive part via a communication tube; In the damper device for a cold air outlet, the bellows is provided with a first heat-sensing part for sensing the temperature of the refrigerator room and a second heat-sensing part for setting the temperature through a communication pipe. The first heat sensitive part is placed at a predetermined position in the refrigerator compartment, and the second heat sensitive part is placed outside the refrigerator compartment and is equipped with a heater, and this heater is connected to a power source via a variable resistor. is connected.

(Function) In this invention, the first
The heat-sensitive part senses this and changes the internal pressure of the bellows to move the damper plate forward and backward relative to the cold air opening to maintain a constant temperature in the refrigerator compartment.

When setting the temperature of the refrigerator compartment, the variable resistor is operated to increase or decrease the amount of heat generated by the heater, adjust the amount of heat applied to the second heat-sensitive section, and change the internal pressure of the bellows.

(Example) Hereinafter, an example of the present invention will be described with reference to FIG.

This device is also basically similar to the device shown in FIG. A cold air outlet 4, a damper plate 5 for the cold air outlet 4, a container frame 7 in the damper operating mechanism 6, a base end of which is rotatably attached to the container frame 7 by a support shaft 9, and the damper plate 5 is attached to the tip end thereof. An attached actuation plate 8, a bellows 10 provided on the container frame 7 facing one side of the actuation plate 8 and filled with fluid, and a protrusion 1 at the lower end of the actuation plate 8.
1, and parts corresponding to those in FIG.

However, the adjustment mechanism of the spring 16 in FIG.
5. The eccentric cam 18 having the camshaft 19 is not provided, and the spring 16 is stretched between the container frame 7 and the protruding piece 13 of the actuating plate 8.

In the device shown in FIG. 1, the bellows 10 has one
However, in the apparatus of the present invention, the bellows 10 includes a first heat sensitive part 21 for sensing the temperature of the refrigerator compartment and a second heat sensitive part 22 for temperature setting.
are connected sequentially. That is, bellows 10
A first heat sensitive section 21 is connected to the first heat sensitive section 21 via a communicating tube 11, and a communicating tube 23 is connected to the first heat sensitive section 21 through a communicating tube 11.
The second heat-sensitive section 22 is connected via. and,
The first heat sensitive part 21 is arranged at a predetermined position in the refrigerator compartment 3, and the second heat sensitive part 22 is arranged outside the refrigerator compartment 3.
4 is attached by winding etc., to this heater 24,
A power source 27 is connected via a variable resistor 26 provided outside the door 25.

In such a configuration, the first heat sensitive section 21 senses a temperature change in the refrigerator compartment 3, changes the internal pressure of the bellows 10 as described above, and moves the damper plate 5 against the cold air port 4. It moves back and forth to keep the temperature of the refrigerator compartment 3 constant.

Furthermore, when setting the temperature of the refrigerator compartment 3, the variable resistor 26 is operated to increase or decrease the amount of heat generated by the heater 24, and the amount of heat applied to the second heat-sensitive section 22 is adjusted to change the internal pressure of the bellows 10. Let's do it. At this time, the temperature of the refrigerator compartment 3 can be set steplessly from the outside without opening the door 25.

[Effect of the invention] According to the invention, the first heat-sensitive part connected to the bellows is arranged inside the refrigerator compartment, and the second heat-sensing part equipped with a heater is arranged outside the refrigerator compartment. The unit can be installed in a predetermined position where it is easy to detect the temperature inside the refrigerator compartment, and since it can be placed bare, it follows the temperature of the refrigerator compartment with high sensitivity, reducing the differential and controlling the temperature well. In addition, by adjusting the amount of heat generated by the heater of the second heat-sensitive section using a variable resistor, the internal pressure of the bellows can be increased or decreased to easily set the temperature of the refrigerator compartment. By providing the heater externally, it is possible to set the temperature without opening the door of the refrigerator, etc. Furthermore, since the heater is located outside the refrigerator compartment together with the second heat-sensitive part, the heat from the heater can be applied to the refrigerator interior temperature and the first temperature. Temperature control can be performed with high accuracy without affecting the heat-sensitive part.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional device, FIG. 2 is a front view of the cam, and FIG. 3 is a longitudinal sectional view of an embodiment of the device of the present invention. 1...Division wall, 2...Freezing room, 3...Refrigerating room,
4... Cold air vent, 5... Damper plate, 7...
Container frame, 8... Actuation plate, 10... Bellows, 11...
...Communication tube, 16...Spring, 21...First heat sensitive section, 22...Second heat sensitive section, 23...Communication tube, 24...Heater, 26...Variable resistor, 27
……power supply.

Claims (1)

[Claim for Utility Model Registration] A freezer compartment and a refrigerator compartment separated from each other by a partition wall, and a cold air outlet provided in the partition wall between the freezer compartment and the refrigerator compartment to send cold air from the freezer compartment to the refrigerator compartment. a damper plate provided to be able to move forward and backward with respect to the cold air outlet; an actuating plate whose base end is rotatably attached to the container frame and the damper plate is attached to the tip end; A bellows is provided opposite to one side of the actuating plate and connects a heat-sensitive part via a communication pipe; and a bellows is provided to the actuating plate and urges the actuating plate in a direction opposite to the direction in which the bellows presses the actuating plate. A spring, and a damper device for a cold air outlet, in which a first heat-sensing section for sensing temperature in the refrigerator room and a second heat-sensing section for temperature setting are sequentially connected to the bellows through a communication pipe, and A first heat-sensitive section is arranged at a predetermined position in the refrigerator compartment, a second heat-sensor section is arranged outside the refrigerator compartment, a heater is attached thereto, and a power source is connected to the heater via a variable resistor. A damper device for the cold air outlet.