JPH01203877A - Refrigerator equipped with manual air flow rate regulating device - Google Patents

Abstract

PURPOSE:To eliminate a clearance between a flange and a damper by close contact generated by the elasticity of the flange and prevent the generation of a play between the damper and the flange, by making the damper so as to be slightly larger than a size between the flanges. CONSTITUTION:A damper 38 is formed so as to be slightly larger than a size between flanges 32, 33. A hole 40, formed on the damper 38 and cold air flows therethrough, regulates the flow rate of cold air by the combination of a venting port 41 on the flange 33 and it. venting holes 39', 42, which are not affected by the damper 38, are formed. In order to mount the damper 38 between the flanges 32, 33, the flanges 32, 33 are deflected and the shaft 39 of the damper is inserted into holes 32a, 33a. Accordingly, the damper 38 is mounted under a state that it is pushed by the elasticity of the synthetic resin of the flanges 32, 33, therefore, a clearance may be eliminated, the leakage of the cold air may be eliminated and the temperature of a cold storage chamber 7 may be regulated surely.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a refrigerator equipped with a manual air volume control device that adjusts the flow rate of cold air by manually operating a damper.

BACKGROUND OF THE INVENTION FIGS. 6 to 9 show a conventional refrigerator equipped with a manual air volume control device, the structure of which will be described below.

In the figure, reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3, and a heat insulating material 4 filled between both boxes 2 and 3. The inside of the main body is divided into two upper and lower chambers by a partition wall 5, with the upper section being a freezing chamber 6 and the lower section being a refrigerating chamber 7. A cooler 8 extending in the vertical direction is arranged on the back surface of the freezer compartment 6. A coil cover 10 made of a heat insulating plate 9 and a fan cover 11 made of synthetic resin located on the front side of the coil cover 10 are attached to the front surface of the cooler 8.

The fan cover 11 has a cool air outlet 12 on the upper side and a suction port 13 on the lower side. Then, the cold air cooled by the cooler 8 is guided by the blower 15 from the air outlet 12 and the air path 14 formed between the fan cover 10 and the coil cover 10, passing through the partition wall 6 and reaching the refrigerator compartment 7. It's dark. A return air path (not shown) for the cold air from the refrigerator compartment 7 is provided in the partition wall 6.

Reference numeral 16 denotes a cylindrical damper, which manually adjusts the flow rate of cold air flowing through the air passage 14. This damper 16
is attached between a pair of 7-lunges 17° and 18 extending from the freezer compartment 6 side to the air passage 14 side of the fan cover 11,
Fan cover 1 formed between these flanges 17 and 18
A hole 2o is formed in the middle of the opening 19 of the damper 16, and a hole 1 is partially opened in the damper 16, and the flow rate of cold air is adjusted through the vent formed by the hole 2o and the hole 21.

Further, in the middle of the damper 16, there is a shaft 22 extending downward.
is integrally formed, and is inserted into the shaft hole 23 of the lower flange 18 so as to be freely rotatable. Reference numeral 24 fixes the shaft 22 from the upper flange 17 with a screw to prevent it from being removed. Furthermore, the said flange 17, 18 and the fan plate 1
Two ribs 25 and 26 are formed at the base of 1 for reinforcement.

Problems that the invention aims to solve However, in the above configuration, the upper and lower flank cuffs.

18 is integrally molded with the fan cover 11 from synthetic resin, but due to the weight of the damper 16, it is difficult to maintain a flat surface, and a gap is created between the damper 16 and the cool air flowing at a rate higher than the intended flow rate. In some cases, the refrigerator compartment 7 was cooled too much. Further, since the shaft 22 is tightened by the screw 24, the damper 16 may not rotate due to excessive tightening. Furthermore, if this tightening is weak, if the holes 2o and 21 are placed in completely different positions and are completely closed, the refrigerator compartment 7
There was a problem with the unit not cooling down.

In view of the above problems, the present invention provides a refrigerator equipped with a manual air volume adjustment device that prevents the damper and the flange from shaking.

Means for Solving the Problems In order to achieve the above-mentioned problems, the present invention forms a pair of upper and lower flanges so as to block the air passage through the fan cover, and an opening for damper operation is provided in the fan cover between the flanges. A connecting part is formed between the flanges at a position different from this opening, and a ventilation hole that is opened and closed by the damper is formed in the flange, and a hollow ventilation hole that is opened independently of the damper is formed in the shaft of the damper. It is something to do. Also,
The damper is made slightly larger than the flange-to-flange dimension.

Operation The present invention has the above-mentioned structure, so that the damper is brought into close contact between the flanges, and the flanges are connected at the connecting portion, so that there is no looseness. Furthermore, since cold air is always supplied from one vent, the temperature will not rise abnormally.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. Structures that are the same as those of the prior art will be given the same reference numerals and detailed explanations thereof will be omitted.

A fan cover 31 is made of synthetic resin and forms an air passage 14 on the front surface of the coil cover 10. A pair of upper and lower flanges 32 and 33 extend from the fan cover 31 so as to cross the air passage 14. The lower flange 33 completely closes the air passage 14, and its tip 34 is inserted into a groove 36 formed in the coil cover 10 for positioning. Opening 36 on the freezer compartment 6 side between the 7 lunges 32 and 33
A connecting portion 37 is formed between the flanges 32 and 33 on the opposite side.
are connected together.

Further, a cylindrical damper 38 made of synthetic resin is provided between the flanges 32 and 33. On the periphery of this damper 38, numbers 1 to 7 are shown that roughly indicate the temperature of the refrigerator compartment 7, and a part of the temperature is shown from the opening 36 to the freezer compartment θ.
I'm having him come to my side.

This damper 38 is integrally formed with a shaft 39 having a hollow vent 39' extending vertically in the middle thereof, and is rotatable through holes 32a and 33a of the flanges 32 and 33. Further, the damper 38 is formed to be slightly larger than the dimension between the flanges 32 and 33. 4o is a hole formed in the damper 38 through which cold air flows;
The flow rate of cold air is adjusted in combination with the ventilation port 41 of No. 3. Further, vent holes 39' and 42 which are not affected by the damper 38 are also formed.

In such a device, the damper 38 is connected to the flange 32.
．． 33, bend the 7 langes 32° 33, and insert the shaft 39 into the hole 32a.

33a.

Therefore, the damper 38 is mounted while being pressed down by the elasticity of the synthetic resin of the flanges 32 and 33, so there is no gap, no leakage of cold air, and the temperature of the refrigerator compartment 7 can be reliably adjusted.

In addition, since cold air is supplied from the hollow 39' of the shaft 39 and the vent 42 regardless of the damper 38, the damper 38
Even if the ventilation hole 41 is completely blocked due to an erroneous operation, the refrigerator compartment 7
temperature shall be maintained.

Furthermore, the flanges 32 and 33 do not bend or shift due to the connecting portion 37, and one end of the flange 33 is locked to the coil cover 10, making it easier to maintain the horizontal position and increasing the operability of the damper 38. .

Effects of the Invention As is clear from the above embodiments, the present invention has the advantage that by making the damper slightly larger than the dimension between the flanges, the elasticity of the flanges allows for close contact, eliminating any gaps and keeping the flow rate of cold air constant. In addition to being able to maintain the temperature, the flange is connected at the connecting part, making it difficult to bend and creating gaps. Furthermore, since the shaft is provided with a ventilation hole that is not affected by the damper, the refrigerator compartment can always be maintained at the refrigeration temperature.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a temperature control device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A with a coil cover attached to Fig. 1, and Fig. 3 is a temperature control device in Fig. 1. FIG. 4 is a central sectional view of the main parts on the freezer compartment side of the refrigerator; FIG. 5 is an assembled perspective view of the main parts of a conventional temperature control device; FIG. Figure 6 is a sectional view taken along line 9B-B with the coil cover attached, Figure 7 is a central sectional view of the main part of a conventional refrigerator on the freezer compartment side, and Figure 8 is a view from diagonally above Figure 6. FIG. 9 is a perspective view of the main parts and a front view of the freezer compartment side of the conventional refrigerator. 6... Freezer room, 7... Refrigerator room, 8...
...Cooler, 1o...Coil cover, 31
...Fan cover, 32.33 ...Flange, 37 ...Connection part, 38 ...Damper, 14 ...Air passage, 41 .42...
・Ventilation duct. Name of agent: Patent attorney Toshio Nakao and 1 other person 3I
- Fan power bar Fig. 3 6 - Freezer compartment 7 - Cold

Claims (1)

[Claims] a freezer compartment, a refrigerator compartment, a heat exchanger placed on the back side of the freezer compartment, and a coil cover made of a heat insulating material located on the front side of the heat exchanger and forming an air path for the cooler by the blower;
It consists of a fan cover made of synthetic resin and a damper installed in the air passage to adjust the flow rate of cold air, and the fan cover has a pair of upper and lower flanges so as to block the air passage,
Between this flange, there is an opening through which a part of the damper is exposed in order to operate the damper from the freezer compartment side, a connecting part connected to the flange at a position different from the opening, and a damper formed on the flange that opens and closes. Equipped with a ventilation hole,
The damper is made slightly larger than the dimension between the flanges and has a disk shape with a shaft extending in the vertical direction at the center,
A refrigerator equipped with a manual air volume adjustment device in which a hole passing through the shaft is formed in the flange, and a hollow ventilation port is provided in the shaft to allow cool air to flow regardless of the damper.