JPH0635882U - refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] Two cool air flows from one supply port into the duct.
In the case of distributing to one storage room, one storage room can be uniformly blown with cold air from a plurality of outlets, and the other storage room is supplied with an excessive amount of cold air. To prevent a supercooled state. [Structure] The cold air discharged from the supply port 34 hits the end of the first duct portion 37, where velocity energy is converted into pressure energy. This pressure causes cold air to
The air is blown out from each of the air outlets 40 of the duct portion 38 into the refrigerating chamber substantially evenly. The cold air that has flowed into the second duct portion 38 is appropriately blocked by the protrusion 42 and flows downward while blowing out from each of the outlets 40 into the refrigerating chamber. Therefore, most of the cool air that has flowed into the second duct portion 37 is the third air.
It is possible to prevent the air from being blown into the chilled chamber from the air outlet 41 of the duct portion 39.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a refrigerator in which cold air sent from a cooler by a fan flows into a duct from a supply port opened and closed by a damper device and is blown out from the duct to two storage chambers.

[0002]

[Prior art]

 In a fan-cool type refrigerator, cool air cooled by a cooler is supplied to a storage room such as a freezing room or a refrigerating room by a fan. Among them, the refrigerating compartment and the chilled compartment provided in the refrigerating compartment are provided through the duct 1 as shown in FIGS. 6 and 7. The duct 1 includes supply ports 4 and 5 which are opened and closed by damper devices 2 and 3, and a lower duct 7 integrally having a front duct portion 6 communicating with one supply port 4 and the other supply port 5. And an upper duct 8 which communicates with the cold air passage 10 provided in the back wall 9 of the refrigerating compartment.

The cool air sent from the cooler by a fan (not shown) flows into the front duct section 6 from the supply port 5 and blows out into the chilled chamber from the air outlet 6a formed in the front duct section 6. . In addition, the cool air flows from the supply port 4 into the upper duct 8 and flows upward in the upper duct 8, and among the plurality of outlets 8a provided at intervals in the vertical direction. Blow off into the refrigerating chamber from the lower outlet. The damper devices 2 and 3 are motor-type damper devices that use a motor as a drive source. When the chilled chamber and the refrigerating chamber are cooled to a set temperature, the supply ports 4 and 5 are closed to the refrigerating chamber. The cold air supply is stopped.

[0004]

[Problems to be solved by the device]

 In the above-described configuration, the cool air supplied to the refrigerating compartment is blown out into the refrigerating compartment from the lower outlet 8a in the process of being discharged from the supply port 4 and flowing upward in the upper duct 8. The amount of cold air blown out from 8a tends to increase as compared to the lower side close to the supply port 4. For this reason, the temperature inside the refrigerating chamber is lower in the lower side than in the upper side, and there is a problem that the cooling temperature varies.

On the other hand, in the motor type damper devices 2 and 3, since the opening / closing plates 2a and 3a are opened / closed by the motor, the opening / closing plates 2a and 3a can be controlled to be fully opened and fully closed. When the temperature of the refrigerating chamber 12 becomes lower than the set temperature, the supply ports 4 and 5 can be fully closed by the opening and closing plates 2a and 3a to prevent the cool air from leaking. On the other hand, the motor type damper device is expensive.

Therefore, as shown in FIGS. 8 and 9, the cool air discharged from one supply port 11 is configured to be distributed to the upper duct 8 and the front duct portion 6 to provide one damper device. At the same time, it is conceivable to replace the damper device 12 with an inexpensive gas pressure damper device for cost reduction. In addition, in FIG. 8, 13 shows a refrigerating room and 14 shows a chilled room.

However, the gas pressure damper device 12 includes a temperature-sensing part and an actuating part in which gas is sealed, and the temperature-sensing part is arranged in the refrigerating compartment 13 so that the temperature-sensing part according to the temperature change in the refrigerating compartment 13 is provided. Since the operating part is displaced by changing the gas pressure of the part to adjust the opening degree of the opening / closing plate 12a, it may stop in a slightly open state when the temperature nears the set temperature. In this state, since the amount of cold air discharged from the supply port 11 is small, most of the cool air flows into the front duct portion 6 located immediately near the supply port 11 and the chilled chamber 14 is in a supercooled state. The problem arises that

The present invention has been made in view of the above circumstances, and an object thereof is to distribute cold air that has flowed into a duct from one supply port to two storage chambers, and for one storage chamber. As a result, cold air can be evenly blown out from multiple outlets, and it is possible to prevent the proportion of cold air supplied to other storage chambers from increasing even if the amount of cold air discharged from the inlets is small. , It is to provide a refrigerator that can prevent a supercooled state.

[0009]

[Means for Solving the Problems]

 In the refrigerator of the present invention, the cool air sent from the cooler by the fan is made to flow into the duct from the supply port opened and closed by the damper device and blown out from the duct to the first and second storage chambers. The first duct portion extends in one direction from a supply port, and the duct extends from the end portion of the first duct portion in a direction opposite to the first duct portion. A second duct part having a plurality of outlets for ejecting cool air in the storage chamber of the second duct at intervals in the extension direction and the end part of the second duct part. It comprises a third duct part having an outlet for blowing the cool air into the chamber, and the projecting parts which serve as resistance to the flow of the cool air are alternately provided on both inner side parts of the second duct part facing each other. It will be.

[0010]

[Action]

 According to the present invention of the above-mentioned means, the cold air discharged from the supply port hits the terminal end of the first duct portion, where the velocity energy is converted into the pressure energy. Then, due to this pressure, the cool air is blown out from each of the outlets of the second duct portion into the first storage chamber substantially uniformly.

Further, since the second duct portion is provided with the protrusion, the cool air that has flowed into the second duct portion does not flow into the third duct portion as it is, and is particularly discharged from the supply port. Even if the amount of cold air to be discharged is small, the cold air can be blown out also to the first storage chamber, and most of the cool air can be prevented from being supplied to the second storage chamber from the third duct portion.

[0012]

【Example】

 An embodiment in which the present invention is applied to supplying cold air to a refrigerating room and a chilled room will be described below with reference to FIGS. 1 to 4.

In FIG. 4 showing the overall configuration of the fan-cool type refrigerator, 21 is a refrigerator main body, and in this refrigerator main body 21, a refrigerator compartment 22, a two-stage freezer compartment 23 and a vegetable compartment 24 are arranged in this order from the top. Are formed. Further, a chilled chamber 25, which is a second storage chamber, is provided in the lower part of the refrigeration chamber 22 with the refrigeration chamber 22 as a first storage chamber.

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 It is supplied to the freezing compartment 23 directly by the fan 28, 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. Then, the cool air supplied to the freezing compartment 23, the refrigerating compartment 22, the chilled compartment 25, and the vegetable compartment 24 is returned to the cooler compartment 27 via the reflux passage 29 provided in the refrigerator main body 21, and is cooled there again. It is circulated so that it is cooled by the vessel 26 and supplied to each chamber. The cold air passage for sending the cool air to the refrigerating chamber 22 is shown in FIG. 3 and FIG.

A duct 31 is provided on the back surface of the refrigerating chamber 22 in order to supply the cool air sent through the cool air passage 30 into the refrigerating chamber 22 and the chilled chamber 25. The duct 31 includes a lower duct 32 and an upper duct 33. As shown in FIGS. 1 to 3, the lower duct 32 is provided with a damper device 35 for opening and closing the supply port 34 which is the outlet of the cold air passage 30.

The damper device 35 is of a gas pressure type and, as shown in FIG. 4, has a temperature sensing part 35a filled with gas, a bellows 35b as an operating part communicating with the temperature sensing part 35a, and an opening / closing part. The opening / closing plate 35c is provided. The temperature sensing portion 34a is arranged in the refrigerating compartment 22, 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 portion 34a. Then, the opening / closing plate 35c is rotationally displaced in the direction of arrow A according to the expansion and contraction of the bellows 35b, and opens and closes the supply port 34.

As shown in FIGS. 1 and 2, a pair of partition ribs 36, 36 extending from the lower end to near the upper end are formed in the upper duct 33. The inside of the upper duct 33 is located at the central portion by the pair of partition ribs 36, 36, communicates with the supply port 34, and extends from the supply port 34 in the upward direction, which is one direction. The upper end portion is in communication with the upper end portion, which is the terminal end portion of the first duct portion 37, and is partitioned into the second duct portions 38, 38 that extend downward in the opposite direction to the first duct portion 37. ing. Further, on both the left and right sides of the lower duct 32, there is provided a third duct portion 39 which communicates with the lower end portion which is the terminal end portion of the second duct portions 38, 38.

The second duct portions 38, 38 are provided with air outlets 40 for blowing cold air into the refrigerating chamber 22 with a space in the vertical direction, which is an extension direction of the second duct portions 38, 38. In addition to being formed in several pieces, the third duct portion 39 is formed with an outlet 41 for blowing cold air into the chilled chamber 25. A plurality of protrusions 42 are provided on the inner side of the second duct portion 38 so as to be located immediately below each of the air outlets 40. The protrusions 42 are alternately provided so as to protrude from the left inner side portion and the right inner side portion of the second duct portion 38 toward the side portion on the partner side. The inside of the second duct portion 38 is configured to be a substantially zigzag-shaped passage.

In the above-mentioned configuration, when the refrigerating chamber 22 reaches the set temperature or higher, the opening / closing plate 35c of the damper device 35 opens the supply port 34. Then, the cool air sent from the cooler 26 by the fan 28 flows into the first duct portion 37 of the upper duct 33 from the supply port 34. The cool air that has flowed into the first duct portion 37 flows upward in the first duct portion 37 to hit the upper end portion of the first duct portion 37, and then the flow direction is changed to change to the second duct portion. It flows into the duct portion 38.

The cold air thus flowing into the second duct portion 38 is sequentially blown out from the outlet 40 into the refrigerating compartment 22 in the process of flowing downward in the second duct portion 38, and the remaining The cold air flows into the third duct portion 39 and is blown out into the chilled chamber 25 from the air outlet 41.

As described above, when the cold air flowing upward in the first duct portion 37 hits the upper end portion of the first duct portion 37, the energy of the velocity of the cold air becomes energy of pressure. The cold air that has been converted and flowed into the second duct portion 38 is blown out into the refrigerating chamber 22 from the blowout port 40 due to the pressure. Therefore, the amount of cold air blown out from each of the air outlets 40 provided at intervals in the vertical direction is equal (accurately, the amount of the cool air depends on the size of the air outlet, and the size of each air outlet 40 is If they are the same, the amount is the same), and it is possible to prevent variations in the temperature of the refrigerator compartment 22.

By the way, the cool air flowing into the second duct portion 38 flows toward the third duct portion 39 below. Therefore, if the projection 42 is not provided, it is said that the cold air blows out from each outlet 40 by the pressure generated when it hits the upper end portion of the first duct portion 37 as described above, but Due to the influence, the amount of cold air flowing into the third duct portion 39 as it is increases. If, as shown in FIG. 5, the protrusion B is provided only on one of the inner sides of the second duct portion 39, the cold air is indicated by the arrow C in the figure. As described above, the amount of cold air flowing into the third duct portion 39 also increases due to the downward flow on the side where there is no flow resistance, that is, the other inner portion where the protrusion B is not provided.

However, in this embodiment, since the protrusions 42 are provided alternately on both inner side portions of the second duct portion 39, the cold air flowing into the second duct portion 39 is As indicated by an arrow D, first, it hits the uppermost first stage protrusion 42 and blows out from the uppermost first stage blowout port 40, and then hits the second stage protrusion 42 and blows the second stage blowout. As the air is blown out from the outlet 40, resistance is received from the protrusion 42 of each stage until reaching the third duct portion 39, and the air is blown out sequentially from the blowout port 40 of each stage. Therefore, the amount of cold air flowing into the third duct portion 39 becomes an amount according to the internal volume of the chilled chamber 25, and it is possible to prevent the chilled chamber 25 from being overcooled.

Further, when the temperature of the refrigerating compartment 22 decreases to near the set temperature, the opening / closing plate 35c stops with the supply port 34 slightly open, and the cold air from the supply port 34 leaks. However, even in this case, the cold air is sequentially blown out from the outlet 40 of the second duct portion 38 for the same reason as described above, and the amount of the cool air flowing into the third duct portion 39 becomes small, There is no risk of the chilled chamber 25 being overcooled. Then, when the inside of the refrigerating chamber 22 is cooled to a set temperature by the cool air blown from the outlet 40 of the second duct portion 38, the opening / closing plate 35c closes the supply port 34, and the cooling chamber 22 and the chilled chamber 25 are closed. Cold air supply is stopped.

Although the damper device 35 is of the gas pressure type in the above embodiment, it may be of the motor type. Besides, the present invention is not limited to the embodiments described above and shown in the drawings, and is not limited to, for example, supplying cold air to a refrigerating chamber and a chilled chamber, but is widely applied to supplying cold air to two storage chambers through a duct. For example, various modifications can be made without departing from the scope of the invention.

[0026]

[Effect of device]

 As described above, according to the present invention, the cold air discharged from the supply port hits the end of the first duct section to convert the velocity energy into the pressure energy, and the pressure causes the cold air to become the second air. Since the air is blown out from the outlets of the duct section of the first duct to the first storage chamber substantially evenly, it is possible to prevent temperature unevenness in the first storage chamber, and the cold air flowing into the second duct section is projected. As a result, resistance does not flow into the third duct part as it is, and even if the amount of cold air discharged from the supply port is small, it is possible to prevent the ratio of cold air supplied to the third duct part from increasing. It is possible to prevent the second storage chamber from being overcooled.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a rear view of a partially removed duct.

FIG. 2 is a cross-sectional plan view taken along the line EE of FIG.

FIG. 3 is a configuration diagram of a damper device.

[Fig. 4] Vertical side view of the entire refrigerator

FIG. 5 is a view showing another configuration example for comparison with the present invention.
Corresponding figure

FIG. 6 is a front view showing a conventional duct configuration.

FIG. 7 is a view corresponding to FIG.

FIG. 8 is a vertical sectional side view.

FIG. 9 is a diagram showing a configuration in which one damper device is used.
Corresponding figure

[Explanation of symbols]

21 is a refrigerator main body, 22 is a refrigerating room (first storage room), 2
5 is a chilled chamber (second storage chamber), 26 is a cooler, 31 is a duct, 32 is a lower duct, 33 is an upper duct, 34 is a supply port, 35 is a damper device, 36 is a partition rib, and 37 is a first duct. , 38 is a second duct part, 39 is a third duct part, 40 and 41 are outlets, and 42 is a protrusion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keizo Tsukamoto 1-6 Ota Toshiba-cho, Ibaraki-shi, Osaka Prefecture Osaka Abu E-E Co., Ltd. Osaka Office (72) Makoto Oikawa Toshiba Ota-Toshiba, Ibaraki-shi, Osaka 1-6 Machi Toshiba Abu E Co., Ltd. Osaka Office

Claims (1)

[Scope of utility model registration request] 1. Cooling air sent from a cooler by a fan is made to flow into a duct from a supply port opened and closed by a damper device and blown out from the duct to the first and second storage chambers. In the first storage, the duct is extended in a direction opposite to the first duct part from a first duct part extending in one direction from a supply port, and an end portion of the first duct part. A second duct part having a plurality of blow-out ports for blowing cold air into the chamber at intervals in the extension direction, and a second end part of the second duct part.
A third duct part having an outlet for blowing cold air into the second storage chamber, and a protrusion that serves as a resistance to the flow of cold air at both inner sides of the second duct part facing each other. Refrigerator that is alternately provided.