JP2670407B2 - refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a structure in which cold air is blown into a storage chamber from a plurality of blowout ports formed in a duct.

[0002]

2. Description of the Related Art In a fan-cool type refrigerator, cold air cooled by a cooler is supplied to a storage room such as a freezing room or a refrigerating room by a fan. Of these, for the refrigerator room,
It is performed through the duct 1 as shown in FIGS. This duct 1 is composed of a lower duct 4 having a supply port 3 which is opened and closed by a damper device 2 and an upper duct 5 which communicates with the supply port 3, and the supply port 3 is provided on a rear wall 6 of a refrigerating compartment. It communicates with the cold air passage 7.

The cool air sent from the cooler by a fan (not shown) flows into the upper duct 5 from the supply port 3 and flows upward in the upper duct 5, so that there is an interval in the vertical direction. The plurality of outlets 8 provided in this order are blown out into the refrigerating chamber from the lower outlet 8 in order. The damper device 2 uses a motor-type damper device having a motor as a drive source. When the temperature of the refrigerating compartment is lowered to a set temperature, the supply port 3 is closed to stop the supply of cold air to the refrigerating compartment. .

In the example shown in FIGS. 6 to 8, the lower duct 4 is provided with another supply port 10 which is opened and closed by another motor type damper device 9.
Is connected to a front duct 11 formed in the lower duct 4 in order to supply cold air to a chilled chamber which is a storage chamber different from the refrigerating chamber.

[0005]

In the above structure, since the cool air discharged from the supply port 3 is blown upward in the upper duct 5 through the lower outlet port 8 into the refrigerating chamber, each blown air is blown. The amount of cold air blown out from the outlet 8 depends on the supply port 3
There is a tendency that the lower ones closer to, the greater the number. Therefore, the temperature inside the refrigerating chamber is lower on the lower side than on the upper side, and there is a problem that the cooling temperature varies.

Also, cool air is supplied to the refrigerating room and the chilled room.
In order to provide two damper devices 2 and 9
Therefore, the cost becomes high.

[0007]

[0008]

The present invention has been made in view of the above circumstances, and an object thereof is to blow cold air into a storage chamber from a plurality of air outlets provided in a duct and evenly blow the cool air from each air outlet. It can be also one of the test
Supplying cold air discharged from the inlet to multiple storage rooms
Accordingly, it is possible to provide a refrigerator capable of reducing the number of damper devices .

[0010]

The refrigerator of the present invention is refrigerated.
A duct provided on the chamber side, the cold air fan by coming from the cooler, from one supply port which is opened and closed by a damper device by entering the duct, a plurality of air outlets or we formed the duct in those so as to out spray, before
At the base of the duct, cool air blown from the supply port
The receiving chamber and the flow into this chamber
Two outlets for distributing cold air into two channels are provided, and both of these outlets are provided.
Cold air flowing out from one of the outlets is stored in the refrigerating chamber.
Is installed in the lower part of the
In addition to being configured to supply to the storage room,
A first duct part extending in one direction from the other remaining outlet of the two outlets, and a part forward from the base part, and the first duct part from the end part of the first duct part. The second duct portion extends in the opposite direction, and at the end portion of the first duct portion, cool air blown from the other outlet is redirected to the second duct portion in its extension direction. And a guide for allowing the air to flow in, and
A plurality of ducts are formed at intervals in the extension direction of the duct.

In the second duct portion, a projecting portion for receiving cool air and causing it to blow out from the outlet can be provided at the leeward opening edge of the outlet. In this case, it is preferable that the air outlet on the leeward side is projected higher.

[0012]

According to the present invention of the above means, the duct from the supply port
The cold air blown into the chamber at the base of is distributed into two channels
The cold air flowing through one of the flow paths flows into the first duct section.
Those Ri its end and, where velocity energy is converted into pressure energy, this pressure, so that cold air is blown out substantially equally from each outlet of the second duct portion. In this case, since the cool air blown from the supply port is guided by the guide and smoothly changes its direction, there is no possibility of turbulence. In addition, the cooling flow from the chamber to the other flow path
Qi blows out to another storage room at the bottom of the refrigerator compartment.
It is.

Further, if each of the outlets is provided with a protrusion, and if the height of the protrusion is set higher toward the leeward side, the amount of cold air blown out from each of the outlets is further increased. It can be made uniform.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIG. 5, which shows the overall configuration of the fan-cool type refrigerator, 21 is a refrigerator main body, and in this refrigerator main body 21, a refrigerating compartment 22, a two-stage freezing compartment 23 and a vegetable compartment 24 are sequentially formed from the top. . In the lower part of the refrigerating room 22, a chilled room 25 is provided as another storage room.
Is provided.

A cooler chamber 27 accommodating a cooler 26 is provided in a portion of the back wall of the refrigerator main body 21 corresponding to the back portion of the freezing chamber 23, and the air cooled by the cooler 26 is a fan. By means of 28, it is directly supplied to the freezing compartment 23, or is supplied to the refrigerating compartment 22, the chilled compartment 25 and the vegetable compartment 24 via the cold air passage provided in the refrigerator main body 21. And the freezing room 23, the refrigerating room 22, the chilled room 2
5 and the cold air supplied to the vegetable compartment 24 are the refrigerator main body 2
It is returned to the cooler chamber 27 via the return path 29 provided in No. 1 and is circulated such that it is cooled by the cooler 26 again and supplied to each chamber. A part of the cold air passage for sending the cool air to the refrigerating chamber 22 is shown with reference numeral 30.

In FIGS. 1 to 4 showing a structure for supplying the cool air sent through the cool air passage 30 into the refrigerating chamber 22 and the chilled chamber 25, 31 is a duct provided on the rear surface of the refrigerating chamber 22. The duct 31 is composed of a lower duct 32 and an upper duct 33. duct
As shown in FIGS. 3 and 4, the lower duct 32, which is the base of 31 , has a supply port 34 communicating with the cold air passage 30 and a damper device 35 for opening and closing the supply port 34. It is provided. Also, of the lower duct 32
Inside the chamber C, which receives cold air from the supply port 34
Are formed on the upper side and the front side of the chamber C.
Outlet D1 for blowing out the cool air supplied into the chamber C
(See FIG. 1) and D2 are formed. Then, the front portion of the lower duct 32, communicating with the outlet D 2 of the chamber C
A horizontally long front duct portion 32a is formed, and an outlet 32b for blowing cold air into the chilled chamber 25 is formed in the front duct portion 32a.

The damper device 35 is of a gas pressure type,
As shown in FIG. 4, a temperature sensing portion 35a containing a gas and a bellows 35b as an operating portion communicating with the temperature sensing portion 35a.
And an opening / closing plate 35c as an opening / closing unit. The temperature sensing part 35a is arranged in the refrigerating compartment 22 which is a storage room, the gas pressure inside thereof changes according to the temperature inside the refrigerating compartment 22, and the bellows 35b expands and contracts according to the gas pressure of the temperature sensing part 35a. To do. The opening / closing plate 35c is the bellows 3
According to the expansion and contraction of 5b, it is rotationally displaced in the direction of arrow A, and the supply port
Open and close 4.

As shown in FIGS. 1 and 2, a pair of partition ribs 36, 36 extending from the lower end to the upper end are formed in the upper duct 33. The upper duct 33, this pair of partition ribs 36, a first duct portion 33a which extends from the outlet D 1 communicates with the outlet D 1 of the chamber C is located in central in one serving upward , The upper end portion communicates with the upper end portion which is the terminal end portion of the first duct portion 33a and is divided into second duct portions 33b and 33b which extend downward in the opposite direction to the first duct portion 33a. ing.

Then, as shown in FIG. 2, the upper end portion of the upper duct 31, which is the terminal end portion of the first duct portion 33a, is
From one side half of the first duct part 33a to one second duct part 33b, and from the remaining one side half of the first duct part 33a to the other second duct part 33b,
Guides 37, 37 are provided, each of which extends in an arc concave shape.

On the front surface of the second duct portion 33b,
The cool air outlets 38a to 38d are connected to the second duct portion 33.
A plurality of b and 33b are formed at intervals in the vertical direction, which is the extension direction of b and 33b. The rib 36 is formed on the leeward side opening edge of the other outlets 38a to 38e except the lowermost outlet 38d on the back side of the front surface of the second duct portion 33b, that is, the lower opening edge. From the top to the middle of the side surface of the upper duct 33, projections 39a to 39c, which are projections extending laterally, are provided. In this case, as shown in FIG. 2B, the heights h1 to h3 of the protrusions 39a to 39c are set to be higher toward the leeward air outlet.

In the above structure, the opening / closing plate 35c of the damper device 35 opens the supply port 34 when the refrigerating chamber 22 reaches a set temperature or higher. Then, the cool air sent from the cooler chamber 27 by the fan 28 flows into the chamber C from the supply port 34 and is divided into the front duct portion 32 a of the lower duct 32 and the first duct portion 33 a of the upper duct 33. To do. Lower duct 3
The cold air flowing into the second front duct portion 32a blows out into the chilled chamber 25 from the blowout port 32b. Like this
A portion of the cold air that has flowed into the heating section 32a immediately becomes chilled chamber 2
5 is supplied in the chilled chamber 25 so that meat, sashimi, etc.
The chilled chamber 25 is a refrigerating chamber 2 in order to store living things in a refrigerator.
The situation that it has to be cooled to a temperature lower than 2
Even so, we can easily handle this request.

On the other hand, the first duct portion 33 of the upper duct 33
The cold air that has flowed into the inside a flows upward in the first duct portion 33a, hits the upper end portion of the first duct portion 33a to change the flow direction, and then flows into the second duct portion 33b.
And flows downward in the second duct portion 33b.

Here, if the end portion of the first duct portion 33a is a flat surface, the first duct portion 33 will be described.
When the cold air flowing upward in the a hits the flat surface, a turbulent flow is generated there. When the turbulent flow occurs, energy is lost accordingly, and as a result, the amount of cold air supplied into the refrigerating chamber 22 decreases.

However, in the present embodiment, since the arc-shaped concave guide 37 is provided at the terminal end portion of the first duct portion 33a, it flows upward in the first duct portion 33a. Due to the guide action of the guide 37, the cool air smoothly reverses the direction of flow as shown by an arrow C in FIG. 2A, and flows into the second duct portion 33b. Therefore, unlike the case where the end portion of the first duct portion 33a is a flat surface, the first duct portion 33a
There is no inconvenience that the cold air flowing upward in the interior causes turbulence, and as a result, the amount of cold air supplied to the refrigerating chamber 22 increases.

Now, as described above, the first duct portion 33
The cold air flowing upward in a is in the first duct portion 3
When hitting the upper end of 3a, the energy of the velocity of the cold air is partially converted to the energy of the pressure, and the second duct portion 33b.
The cold air that has flowed into the air blows out at the outlets 38a through 3
It comes out from the 8d into the refrigerator compartment 22.

Therefore, the amount of cool air blown out from each of the air outlets 38a to 38d provided at intervals in the vertical direction is equal (accurately, an amount corresponding to the size of the air outlet, that is, each air outlet 38a). If the size of 38 to 38d is the same, the same amount)
Therefore, it is possible to prevent variations in the temperature of the refrigerating chamber 22.

By the way, since the cool air flows downward in the second duct portion 33b, it cannot be denied that the quantity of the cool air blown out from each of the outlets 38a to 38d tends to be different due to the influence of the flow. However, this is a projecting piece 39 on the leeward side of the upper outlets 38a to 38c.
This can be solved by providing a to 39c.

That is, when the projecting pieces 39a to 39c are provided, the cool air flowing downward is received by the projecting pieces 39a to 39c and blown out from the air outlets 38a to 38c. Therefore, the amount of cold air blown out from the air outlets 38a to 38c depends on the amount of cold air received by the projecting pieces 39a to 39c.
The amount of cold air blown from 8a to 38c can be made equal to the amount of blowout from the blowout port 38d at the lowermost stage, and each blowout port 38a to 3c.
The amount of cold air blowout of 8d can be made uniform.

In this case, in this embodiment, the protrusion 39a is particularly used.
Since the projecting heights of Nos. 39 to 39c are set to be higher on the leeward side, the problem that the lower projecting piece becomes a so-called shadow of the upper projecting piece and the upper one receives a larger amount of cold air can be solved. Therefore, the amount of cool air received by each of the protrusions 39a to 39c, and consequently the amount of cool air blown out from each of the outlets 38a to 38c, can be made more uniform.

When the temperature of the refrigerating chamber 22 decreases to the set temperature, the opening / closing plate 35c closes the supply port 34, but at this time, the opening / closing plate 35c stops with the supply port 34 slightly open, and the supply port 34 Although a small amount of cold air may flow out, even in this case, for the same reason as described above, the outlets 38a to 38d of the second duct portion 33b are provided.
The amount of cold air blown out from the same is equal, and there is no possibility that the inside of the refrigerating chamber 22 will be locally supercooled.

[0031] In the above embodiment, although the damper device 35 were of gas pressure, which is not good even those motorized.

[0032] In addition, the present invention is capable of being carried into practice with various changes without departing from the above and rather than being limited to the embodiments shown in the drawings, the gist of it.

[0033]

As described above, according to the present invention,
The following effects can be obtained. In the refrigerator according to claim 1, it is discharged from one supply port at the base of the duct.
Cold air is divided into two channels and installed in the refrigerating compartment and the lower part of the refrigerating compartment.
It is blown into two storage chambers with another storage chamber
With a single damper device that opens and closes the supply port.
I'm done. Further, a portion for blowing cold air into the refrigerating chamber is composed of a first duct portion and a second duct portion extending from a terminal end portion of the first duct portion in a direction opposite to the first duct portion. At the same time, the end portion of the first duct portion is provided with a guide for changing the direction of the cool air blown from the supply port to the second duct portion so as to flow into the second duct portion. The amount of cool air blown out from each outlet can be made uniform, and turbulent flow can be prevented as much as possible when the cool air flowing through the first duct portion is redirected and flows into the second duct portion. As a result, the amount of cold air supplied to the refrigerating compartment can be increased.

In the refrigerator according to the second aspect of the present invention, the second duct portion is provided with a protrusion for receiving cool air and blowing it out from the outlet at the leeward opening edge of each outlet. The amount of cold air blown out from each cold air blowout port can be made more uniform.

In the refrigerator according to the third aspect of the present invention, the height of the protrusion is set higher toward the leeward outlet, so that the leeward protrusion is affected by the windward protrusion. Therefore, the amount of cold air blown out from each cold air blowout port can be made more uniform.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing one embodiment of the present invention.

FIG. 2 is a rear view and a vertical side view of the upper duct.

FIG. 3 is a cross-sectional plan view taken along the line BB of FIG.

FIG. 4 is a configuration diagram of a damper device.

[Figure 5] Vertical side view of the entire refrigerator

FIG. 6 is a diagram corresponding to FIG. 1 showing a conventional duct configuration.

FIG. 7 is a diagram corresponding to FIG. 3;

FIG. 8 is a longitudinal sectional side view.

[Explanation of symbols]

21 is a refrigerator main body, 22 is a refrigerating room, 25 is a chilled room ( another storage room), 26 is a cooler, 31 is a duct, 32 is a lower duct (base of the duct), 32a is a duct part, 32 b is blowing <br/> exit, 3 3 upper duct, 33a the first duct portion, 33
b is a second duct part, 34 is a supply port, 35 is a damper device, 36 is a partition rib, 37 is a guide, and 38a to 38
d is an air outlet, 39a to 39c are projection pieces (projections) , and C is
The chambers D1 and D2 are outlets .

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-133665 (JP, A) JP-A-5-52460 (JP, A)

Claims (3)

(57) [Claims] 1. A duct is provided on the refrigerating compartment side, and cool air sent from a cooler by a fan is introduced into the duct from one supply port opened and closed by a damper device to form the duct. in those so as to out the plurality of air outlets or al blown, the base of the duct, blown out of the supply port cold air
The chamber that receives the
And two outlets for distributing the cool air to the two flow paths,
The cold air flowing out from one of the two outlets is stored in the refrigerating chamber.
Separately installed in the lower part of the inside and cooled to a lower temperature than the refrigerating chamber
And the duct configured to supply to the storage room of
The part from the base of the
The first duct includes a first duct portion extending in one direction from the mouth, and a second duct portion extending in a direction opposite to the first duct portion from a terminal end portion of the first duct portion. A guide for changing the direction of the cool air blown from the other outlet into the extension direction of the second duct and allowing the cool air to flow into the second duct is provided at the terminal end of the second duct. In addition, the refrigerator is characterized in that a plurality of them are formed at intervals in the extension direction. 2. A projection for receiving cool air and causing it to blow out from the blower outlet is provided at an opening edge portion on the leeward side of the blower outlet in the second duct portion. Refrigerator according to 1. 3. The refrigerator according to claim 2, wherein the protrusion has a higher protrusion toward the leeward air outlet.