JP3574573B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly circulate chill in a refrigerator by providing a circulation blower that is synchronized with a changeover means for controlling the amount of chill of a chill distribution room for operating, and sucks return chill near the cold room chill return port of a cold room, at a chill passage being connected to the cold room chill return port, or near the outlet. SOLUTION: A circulation blower 11 with an integrated circulation fan 11a is provided behind a cold room chill return part 10. Chill cooled by a cooler 25 is sent to a pressure room 28 by a fan 27 of a blower 26 and is sent to a freezer. Also, the room temperature of a cold room 2 is sensed at a temperature-sensing part being provided in the cold room 2. When the room temperature becomes higher than a specific one, the damper of a chill distribution room 15 is opened, chill that enters the chill distribution room 15 from the pressure room 28 is sent to a cold room chill distribution passage 16a, thus simultaneously operating the circulation blower 11 being synchronized with the opening/closing operation of the damper. The discharge of chill of the cold room 2 from the cold room chill return port 10 is promoted, thus uniformly discharging the chill into the cold room 2.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a refrigerator having a blower in a refrigerator.
[0002]
[Prior art]
As disclosed in Japanese Utility Model Laid-Open No. 57-148691, a conventional refrigerator of this type is provided with a connecting passage extending from the rear wall of the refrigerator compartment to the cold air supply passage and extending upward, and a circulation blower at the upper end thereof. There is a refrigerator that discharges cold air into the refrigerator compartment.
[0003]
[Problems to be solved by the invention]
In the conventional refrigerator as described above, a large amount of cold air is discharged only near the discharge port into the refrigerator compartment by the circulating blower, and uniform cold air cannot be circulated in the refrigerator compartment, resulting in a refrigerator with reduced cooling efficiency of the refrigerator compartment. There is a problem that. In addition, if a stored product is stored near the discharge port of the circulating blower, the discharge of cool air is hindered, and the circulation of cool air to the front of the refrigerating compartment is hindered. Further, in the cool air discharge method using only the circulation blower, there is a problem that the refrigerator has a small effect of stirring the cool air in the refrigerator compartment with little spread of the cool air to the left and right.
[0004]
[Means for Solving the Problems]
The refrigerator according to the present invention has solved the above-mentioned problems, and the invention according to claim 1 sends cold air cooled by a cooler to a pressure chamber by a blower, and refrigerates from the pressure chamber through a cold air distribution chamber. A refrigerator for sending cold air to a refrigerator compartment through a compartment cold air distribution passage, wherein the cold air in the cold air distribution room is located near the cold room return air outlet of the refrigerator room or near the cold air passage leading to the cold room return air outlet or the outlet thereof. It is characterized by providing a circulating blower for sucking return cold air that operates in synchronization with the switching means for controlling the amount, and by this configuration, the negative pressure by the circulating blower is uniformly applied to the entire refrigeration room, The amount of cold air according to the opening area is more uniformly discharged into the refrigerator compartment from the cool air outlets provided at various places in the refrigerator compartment, and a refrigerator having an improved cooling effect of the refrigerator compartment is obtained, and the refrigerator is provided with If there is a refrigeration room, near the cool air return port where the circulating blower is located is below the refrigeration room, there is a cold air distribution room that needs a distance in the front and rear direction near it, take a sufficient distance in the front and rear direction, A refrigerator with improved storage efficiency can be obtained with respect to a storage that does not cause a decrease in the blowing efficiency and requires no extra space in the refrigerator compartment.
[0005]
Further, the invention according to claim 2 is provided with a front cold air passage communicating from the cold room distribution air passage to the front of the cold room, and the front cold air passage is provided with a cold air outlet for discharging cold air to the cold room. With this configuration, even when many storage items are stored in the refrigerator compartment, the refrigerator can send cold air sufficiently forward without being interrupted by the storage components, and can efficiently and uniformly cool the refrigerator compartment. Is obtained.
[0006]
The invention described in claim 3 is characterized in that the front cool air passage is provided on the ceiling side as a cool air passage on the ceiling side, and the cool air passage on the ceiling side extends in the left-right direction toward the front. With this configuration, the cool air is discharged from the vicinity of the ceiling of the refrigerator compartment to various places in the front-rear direction, and the cool air sent forward can be sufficiently diffused to the left and right. Can be cooled more uniformly in a wide area from above.
[0007]
Further, the invention described in claim 4 is characterized in that the ceiling-side cool air passage is provided with left and right cool air discharge ports for discharging cool air in the left-right direction. With this configuration, the ceiling-side cool air passage is provided. While the cool air is flowing forward, the cool air flows out to the left and right from the cold air outlets at various places into the refrigerating compartment, so that a refrigerator capable of more uniformly cooling the stored items from above in a wide area can be obtained.
[0008]
Further, the invention described in claim 5 is characterized in that the cool air discharge direction of the circulating blower is inclined to the ventilation side, and this configuration allows the cool air discharge side of the circulatory blower to have a small ventilation depth at least. Cooling air can be efficiently sent to the side, a circulating air blowing mechanism that takes up little space can be obtained, and a refrigerator with improved volumetric efficiency can be obtained.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the refrigerator of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 is a cross-sectional view of a main part of a refrigerator according to the present invention, as viewed from the side, FIG. 2 is a cross-sectional view of a main part of a refrigerating room as viewed from the front, and FIG.
[0011]
In FIG. 1, 1 is a refrigerator main body, 2 is a refrigerator room, 3 is a vegetable room, 4 is an isolation room provided below the refrigerator room 2, and 5 is provided between the refrigerator room 2 and the vegetable room 3. It is a partition. Numeral 6 denotes a front partition, and numeral 7 denotes a case which fits in the isolation room 4. Reference numeral 7a denotes a case guide provided outside the side surface of the case 7, and is drawn by a dotted line. Reference numeral 8 denotes a case shelf serving as a ceiling of the isolation room 4, and reference numerals 8a, 8b, and 8c denote shelves provided in the refrigerator room 2, respectively.
[0012]
Reference numerals 9a and 9b denote side wall guides provided on the side wall 9 of the isolation chamber, which sandwich the case guide 7a from above and below. 9a denotes a side wall guideway, 9b denotes a side wall guide shutter, and each is drawn by a two-dot chain line. The case guides 7a, the side wall guideways 9a, and the side wall guide shifters 9b allow the case 7 to move in the front-rear direction, and guide the movement.
[0013]
Reference numeral 10 denotes a cold room return port having a substantially oval hole. Reference numeral 11 denotes a circulating blower integrally provided with a circulating fan 11a provided behind the cold room return port 10. Numeral 12 is a vegetable room cold air discharge port for discharging cold air to the vegetable room 3, reference numeral 13 is a case cold air discharge port for discharging cool air into the case 7, and numeral 14 is a refrigerator room cold air discharge port for discharging cool air into the refrigerator room. . Reference numeral 15 denotes a cool air distribution chamber provided with a damper, which is a switching means for controlling the amount of cool air. The cool air distribution chamber 15 is provided on the lower left side of the circulating blower 11 with a heat insulating material interposed therebetween, and is drawn by a dotted line.
[0014]
A refrigerating compartment passage set 16 includes a refrigerating compartment cold air distribution passage 16a for sending the cold air discharged from the cold air distributing compartment 15 to the refrigerating compartment 2 and the isolation compartment 4, a heat insulating passage 16b for heat insulation, and a passage cover 16c for a protective cover. It has a case cold air outlet 13 and a cold room cold air outlet 14. The vegetable compartment cold air discharge port 12 communicates with the cool air distribution chamber 15, and a part of the cool air discharged from the cold air distribution chamber 15 is sent to the vegetable compartment 3.
[0015]
Reference numeral 17 denotes a ceiling-side cool air passage which is one of the front cool air passages connected to the upper center of the refrigerator compartment passage assembly 16, and has a ceiling-side cool air outlet 17 a and right and left cool air outlets 17 b at various locations of the ceiling-side cool air passage 17. . The ceiling-side cold air passage 17 is for sending a part of the cold air passing through the cold room cold air distribution passage 16a from the upper center of the cold room cold air distribution passage 16a to the front of the cold room ceiling side.
[0016]
Reference numeral 18 denotes a refrigerator compartment door, which has door pockets 20, 20a, 20b, and 20c on a door back portion 19 of the refrigerator compartment door 18. Reference numeral 21 denotes a vegetable room door, and 22 denotes a vegetable case, which is attached to the vegetable room door 21 by a door angle (not shown). Reference numeral 23 denotes a small case, which is attached to an upper portion of the vegetable case 22. Reference numeral 24 denotes a vegetable room cover, which is located above the vegetable case 22 and the accessory case 23, and is designed to keep the vegetable case 22 and the accessory case 23 at a predetermined humidity.
[0017]
In addition, 25 is a cooler, 26 is a blower assembly having a fan 27, and 28 is a pressure chamber communicating with the cool air distribution chamber 15. Reference numeral 29 denotes an electrical box assembly that houses an electrical circuit assembly 29a for operating the refrigerator and has a lid on the outside.
[0018]
Then, the cool air cooled by the cooler 25 is sent to the pressure chamber 28 by the fan 27 of the blower 26. Thereafter, cool air is sent from the pressure chamber 28 to a freezing chamber (not shown). In addition, a temperature sensor (not shown) provided in the refrigerator compartment 2 senses the room temperature of the refrigerator compartment 2, and when the room temperature becomes higher than a predetermined temperature, a damper (not shown) of the cool air distribution chamber 15 is activated. The cold air that opens and enters the cold air distribution chamber 15 from the pressure chamber 28 is sent to the cold room distribution channel 16a. At this time, the circulation blower 11 synchronized with the opening / closing operation of the damper is also operated at the same time.
[0019]
Thereafter, the cool air is discharged from the plurality of cool room discharge outlets 14 into the cool room 2 while passing through the cool room cool air distribution passage 16a, and a part of the cool air flows from the upper center of the cool room cool air distribution passage 16a to the ceiling side cool air passage. Flow into 17. The cool air flowing into the ceiling-side cool air passage 17 is sent forward while expanding in the left-right direction through the ceiling-side cool air passage 17. The front bottom surface of the ceiling-side cool air passage 17 is inclined so as to be gradually lower toward the front in order to make the cool air easier to flow.
[0020]
The inclination of the function as described above may be provided in the entire area in the front-rear direction or the left-right direction of the ceiling-side cold air passage 17. Thereafter, the cool air in the ceiling-side cool air passage 17 is uniformly discharged from the ceiling-side cool air outlets 17a and the right and left cool air outlets 17b to the entire upper part of the refrigerator room 2 on the ceiling side, thereby further increasing the cooling efficiency of the refrigerator room 2. become. The remaining cool air passing through the cool room cold air distribution passage 16a is sent into the case 7 from the case cool air discharge port 13.
[0021]
Then, the cool air sent into the case 7 cools the stored material in the case 7 and flows out to the refrigerating room 2 from the gap between the front upper end and the case shelf 8. Thereafter, the cool air flowing out of the gap mixes with the relatively warm cool air descending from above the refrigerator compartment 2, passes through the space between the outside of the bottom surface of the case 7 and the partition 5, and is guided to the refrigerator compartment cool air return port 10. . The amount of cool air sent from the case cool air outlet 13 to the case 7 is adjusted by the opening area of each outlet so that the temperature in the case 7 is kept lower than that of the refrigerator compartment 2.
[0022]
When the circulating blower 11 is operated, the cool air in the refrigerator compartment 2 is encouraged to be discharged from the refrigeration compartment cool air return port 10, and the negative pressure by the circulator blower 11 is uniformly applied to the entire inside of the refrigerator compartment 2. From the case cold air outlet 13, the refrigerator cold air outlet 14, the ceiling side cold air outlet 17 a, and the right and left cold air outlets 17 b provided in the various places in the room, the amount of cold air according to the respective opening areas is more evenly distributed. And the cooling efficiency of the refrigerator compartment is improved. The cold air in the refrigerator compartment 2 discharged from the refrigerator compartment cool air return port 10 goes down a duct (not shown) and returns below the cooler 25.
[0023]
In this figure, the circulating blower 11 is provided behind the refrigerator compartment cool air return port 10, but the periphery including the refrigerator compartment cool air return port 10 and a cool air passage (for example, a duct) leading to the refrigerator compartment cool air return port 10 or The same effect as described above can be obtained even if the circulation blower 11 is provided at any one of the periphery including the outlet of the cool air passage.
[0024]
The cool air flowing into the vegetable compartment 3 from the cool air distribution chamber 15 through the vegetable compartment cold air discharge port 12 passes through the cool air passage formed by the partition 5 and the vegetable compartment cover 24, and the cold air flows through the vegetable case 22 and the vegetable compartment door 21. After passing between the back of the door, it reaches the outside of the bottom surface of the vegetable case 22. After that, the cool air passes outside the bottom surface of the vegetable case 22 and returns from the vegetable room 3 to below the cooler 25 by a duct (not shown). In addition, in the figure, the arrow represents the flow of cold air.
[0025]
And since the refrigerator compartment 2 and the vegetable compartment 3 which have little difference in the room temperature are provided vertically adjacent to each other, the thickness of the heat insulating layer of the partition part 5 may be thin, so that the room volume can be effectively used. The partition 5 has an upward concave shape.
[0026]
Further, the width of the passage of the cool air distribution chamber 15 in the left-right direction cannot be so large due to the size of the damper, but is large in the front-rear direction to secure a ventilation area. Therefore, it is necessary to set the same width in the front-rear direction in order to keep the ventilation efficiency of the refrigerator cold air distribution passage 16a just after coming out of the cool air distribution chamber 15 forward. It will be located in the place.
[0027]
Further, the case cold air discharge port 13 is located in the cold room cold air distribution passage 16a at a location remote from the cold air distribution chamber 15, and the cold room cold air distribution passage 16a in the vicinity thereof has a large width in the left-right direction, and the width in the front-back direction is large. The case cold air outlet 13 can be located at the rear, and the cold room distribution passage 16a is inclined so as to recede backward from the vicinity of the cool air distribution chamber 15 to the vicinity of the case cold air outlet 13 as it goes upward. ing.
[0028]
The refrigeration compartment cold air return port 10 is located below the refrigeration compartment 2, and the circulating blower 11 is provided at the rear near the refrigeration compartment cold air return port 10, and immediately after exiting from the cold air distribution chamber 15 due to its structure. It will be located side by side near the inclined surface of the refrigerator compartment cold air distribution passage 16a. For this reason, since the cool air discharge direction of the circulating blower 11 is inclined downward, which is the ventilation side, even if the distance of the cool air discharge direction of the circulator blower 11 is not too large, the ventilation direction is efficiently changed downward and does not take up space. An efficient circulation ventilation mechanism is obtained.
[0029]
The circulating blower 11 is a circulating blower integrally having a circulating fan 11a, which is a propeller fan, and the suction side of the blower passes through the space between the outside of the bottom surface of the case 7 and the partition 5 to return the cool air return port 10 of the refrigerator compartment. In view of the flow state of the return cool air guided to the orifice, the cool air is sucked from the entire periphery on the suction side of the orifice toward the rotation center of the circulation fan 11a, and it is important to sufficiently open the centrifugal direction of the circulation fan 11a. In addition, the inclination of the cool air discharge direction of the circulation blower 11 downward on the ventilation side does not significantly affect the efficiency of the circulation blower 11 on the suction side. The circulating fan 11 may be a blower using a centrifugal fan or a mixed flow fan, and may use a fan with the discharge direction directed downward.
[0030]
In this drawing, only the ceiling-side cold air passage 17 connected to the upper center of the refrigerator compartment cold air distribution passage 16a of the refrigerator compartment passage assembly 16 is provided, but spreads right and left from the refrigerator compartment cold air distribution passage 16a and extends forward of the refrigerator compartment 2. If the front cool air passage is provided at an appropriate position (for example, the center between the respective shelves 8a, 8b, and 8c of the refrigerator compartment 2), and the cool air outlet is provided in the front cool air passage, the storage in the refrigerator compartment 2 can be further improved. It is clear that the cooling air is uniformly sent to the objects and the cooling efficiency is improved.
[0031]
In addition, this figure cut | disconnects the rotation center of the fan 27 provided in the blower 26, then cut | disconnects near the rotation center of the circulation fan 11a integrally provided in the circulation blower 11, and then, The case cold air outlet 13 and the cold room cold air outlet 14 are cut off, and then the vicinity of the center of the ceiling side cold air passage 17 is cut off.
[0032]
Further, the left-right direction means the left-right direction when the refrigerator is viewed from the front, and the front-rear direction means the front-back direction when the refrigerator is viewed from the front.
[0033]
In FIG. 2, the cool air sent from the cool air distribution chamber 15 to below the cool room cool air distribution passage 16 a (indicated by a dotted line) is divided into two passages on the left and right sides by the pressure generated by the fan 27 of the blower 26. The inside of the passage 16a is pushed upward. Thereafter, a part of the cold air that has been pushed up the two right and left passages to near the upper end of the refrigerator compartment 2 flows from the upper center of the refrigerator compartment cool air distribution passage 16a to the ceiling cool passage 17 and passes through the ceiling cool passage 17 to the left and right. It is sent forward while spreading in the direction, and is uniformly discharged from the ceiling-side cold air outlets 17a and the left and right cold air outlets 17b in various places to the entire upper part of the refrigerator compartment 2 on the ceiling side, thereby further increasing the cooling efficiency of the refrigerator compartment 2. become.
[0034]
Further, the remaining cool air is guided to a passage that is reversed left and right, passes through the cold room cold air distribution passage 16a, falls below the cold room 2, and descends to the case cold air discharge port 13 at the end of the cold room cold air distribution passage 16a. During this time, the cool air is sent out from each cold room outlet 14 to the cold room 2, and the remaining cool air is sent out from the case cold outlet 13 to the case 7. Thereafter, the cool air cools the stored matter in the refrigerator compartment 2 and the case 7, passes through the space between the outside of the bottom surface of the case 7 and the partition 5, and is guided to the cool room cool air return port 10.
[0035]
The arrows in the drawing represent the cool air flow in the cold room distribution passage 16a. In addition, the case 7, the partition 5, the case shelf 8, and the shelves 8a, 8b, 8c in the isolation room 4 are removed to make it easy to understand the flow of cool air.
[0036]
The opening of the passage cover 16c corresponding to the cold-air outlet 14 of the refrigerating compartment is formed in a slit shape so as to prevent a storage thing or the like from entering the inside. Further, the passage cover 16c is provided with a temperature sensor 30 for sensing the room temperature in the refrigerator compartment 2, and a rib is provided so that the cool air from the refrigerator air outlet 14 above the refrigerator compartment does not directly hit the temperature sensor 30. A canopy 31 is provided. Reference numeral 32 denotes a lamp cover, on the back side of which a lamp (not shown) for illuminating the inside of the refrigerator compartment 2 is provided.
[0037]
In FIG. 3, a part of the cool air in the refrigerator compartment cool air distribution passage 16 a flows into the ceiling cool air passage 17 from the upper center. The cool air that has flowed into the ceiling-side cool air passage 17 is sent forward while expanding in the ceiling-side cool air passage 17 in the left-right direction, and from the ceiling-side cool air outlets 17a and the right and left cool air outlets 17b at various locations, the refrigerator room 2 on the ceiling side. Is discharged uniformly over the upper part of the refrigeration compartment 2, thereby further increasing the cooling efficiency of the refrigerator compartment 2.
[0038]
Note that a wind direction plate 17c is provided in the ceiling-side cool air passage 17 so as to efficiently forward the cool air while expanding the cool air in the left-right direction. Further, a heat insulating material may be attached in the ceiling-side cool air passage 17 so that the surface of the ceiling-side cool air passage 17 is cooled by cool air in the ceiling-side cool air passage 17 and dew condensation does not occur on the refrigerator compartment 2 side.
[0039]
Further, each of the ceiling-side cool air outlets 17a is connected by a groove which is one step lower than the surface of the ceiling-side cool air passage 17 on the side of the refrigerator compartment 2 so that a part of the ceiling-side cool air outlet 17a can be closed with a storage. Then, the cool air flows out in the lateral direction, and the discharge of the cool air from the ceiling-side cool air discharge port 17a is not completely stopped. In addition, the arrow in the figure represents the flow of cold air.
[0040]
【The invention's effect】
Since the refrigerator of the present invention is configured as described above, according to the invention described in claim 1, the amount of cold air according to the opening area is more uniformly refrigerated from the cool air outlets provided in various places in the refrigerator compartment. A refrigerator that is discharged into the room and has an improved cooling effect in the refrigerator compartment can be obtained, and if there is a refrigerator compartment above the refrigerator, storage is performed for storage that does not reduce the ventilation efficiency and requires no extra space in the refrigerator compartment. A refrigerator with improved efficiency is obtained.
[0041]
According to the second aspect of the present invention, even when a large number of stored items are stored in the refrigerator compartment, the cool air can be sent sufficiently forward without being blocked by the stored items, and the refrigerator compartment can be efficiently and uniformly cooled. A refrigerator is obtained.
[0042]
According to the third aspect of the present invention, the cool air is discharged from the vicinity of the ceiling of the refrigerator compartment to various places in the front-rear direction, and the cool air sent forward can be sufficiently diffused right and left, and a wide area in the front-rear and left-right directions can be obtained. The refrigerator can be supplied with a sufficient amount of cold air to cool the stored products in the refrigerator compartment more uniformly from above in a wide area.
[0043]
Further, according to the invention described in claim 4, while the cool air flows forward in the ceiling-side cool air passage, the cool air flows out from the cool air outlets in various places to the left and right into the refrigerating compartment, and the stored products are more widely spread from above. A refrigerator that can be cooled uniformly can be obtained.
[0044]
Furthermore, according to the invention described in claim 5, even if the depth of the cool air discharge side of the circulating blower is reduced, the cool air can be efficiently sent to the ventilation side, and a space-saving circulating blow mechanism is obtained, and the volume efficiency is reduced. An improved refrigerator is obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory sectional view showing a main part of a main body of a refrigerator according to the present invention, as viewed from a side.
FIG. 2 is an explanatory sectional view showing a main part of the refrigerator compartment of the refrigerator according to the present invention as viewed from the front.
FIG. 3 is an explanatory view from above of a ceiling-side cold air passage of the refrigerator according to the present invention.
[Explanation of symbols]
Reference Signs List 10 Cooling room cold air return port 11 Circulating blower 15 Cold air distribution room 16a Cold room cold air distribution passage 17 Ceiling side cold air passage (front cold air passage)
17b Left and right cool air outlet 25 Cooler 26 Blower 28 Pressure chamber

Claims (5)

A refrigerator that sends cold air cooled by a cooler to a pressure chamber by a blower, sends cold air from the pressure chamber to the cold storage chamber through a cold air distribution chamber through a cold air distribution chamber,
Near the cold room return air outlet of the cold room or near the cold air passage leading to the cold room return air outlet or its outlet, for the return cold air suction operated in synchronization with the switching means for controlling the amount of cold air in the cold air distribution chamber. A refrigerator characterized by having a circulating blower. The cold air outlet for discharging cold air to the refrigerator compartment is provided in the front cold air passage, which is provided with a front cool air passage leading from the refrigerator compartment cold air distribution passage to the front of the refrigerator compartment. refrigerator. 3. The refrigerator according to claim 2, wherein the front cool air passage is provided on a ceiling side and serves as a ceiling cool air passage, and the ceiling cool air passage expands leftward and rightward toward the front. 4. The refrigerator according to claim 3, wherein the ceiling-side cool air passage is provided with left and right cool air discharge ports for discharging cool air in a left-right direction. The refrigerator according to any one of claims 2 to 4, wherein a direction of discharging the cool air of the circulating blower is inclined to a ventilation side.

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