JPH08313145A - Refrigerator - Google Patents

Abstract

PURPOSE: To provide a refrigerator capable of preventing the deterioration of the cooling capacity of a cooling device, and reducing the defrosting time in a well-balanced manner with the defrost. CONSTITUTION: In a refrigerator comprising a cooling device 5 which partitions the refrigerator into a freezing chamber and a refrigerating chamber by a partitioning wall and comprises a flat plate fin parallel to the back side of the freezing chamber and a meandering heat transfer tube, a heater 8 which is arranged to the lower part of the cooling device 5 and provided with a protecting plate 9 to the upper part to defrost the cooling device 5, and a fan 6 to feed the cooled air to the freezing chamber to the upper part of the cooling device 5, an equalizing plate to distribute the returned cooled air circulating to the cooling device 5 is provided to the upper part of the protecting plate 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly to a means for defrosting a frost on a cooler in a short time.

[0002]

2. Description of the Related Art A conventional refrigerator has, for example, FIGS.
As shown in (A) and (B), the interior of the refrigerator is divided into a freezing compartment 3 and a refrigerating compartment 4 by a partition wall 2, and a flat plate fin parallel to the back side of the freezing compartment 3 and a meandering transmission. A cooler 5 constituted by a heat tube, and a heater 8 arranged below the cooler 5 and provided with a protective plate 9 above the heater 8 for defrosting the frost of the cooler 5.
And six fans for delivering cool air to the freezer compartment 3 above the cooler 5. With the above configuration,
When defrosting the frost formed on the cooler 5, the protection plate 9
Therefore, the heater 8 is prevented from being dropped directly. However, the flow of the return cool air that circulates from the circulation path 7 to the cooler 5 is blocked by the protective plate 9, so that the return cool air that contains moisture causes a large amount of frost to be formed on the cooler 5, thereby causing the same cooling. The cooling capacity of the container 5 decreases, and since the frost formation is unevenly distributed in the vertical direction as in the frost formation range a shown in FIGS. 4A and 4B, a long defrosting time is required. Had.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerator capable of preventing the cooling capacity of the cooler from being lowered and balancing defrosting to shorten the defrosting time.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and divides the inside of the refrigerator into a freezing compartment and a refrigerating compartment by a partition wall, and the rear side of the freezing compartment. , A cooler constituted by flat plate-shaped fins parallel to each other and a meandering heat transfer tube, and a heater disposed below the cooler and provided with a protective plate above to defrost the frost of the cooler, In a refrigerator provided with a fan for delivering cool air to the freezer above the cooler, a straightening plate for rectifying return cold air circulating in the cooler is provided above the protective plate. . Further, the right and left sides of the straightening plate are formed to have a predetermined length, and the straightening plate is provided so as to correspond to a substantially central position of the heater. Further, the straightening vanes are inclined with their front edges lowered. In addition, a plurality of through holes are provided in the rectifying plate. Further, both front and rear end portions of the current plate are bent and formed in a substantially V shape toward the back surface. In addition, the back surface of the current plate is provided with a convex portion that extends forward and backward along both ends of the through hole.
Further, the convex portion is formed integrally with the flow straightening plate.

[0005]

According to the above construction, the rectifying plate is provided at the position where the frost is likely to be formed on the cooler, so that the cooling capacity of the cooler can be prevented from being lowered and the defrosting operation time can be shortened. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In FIGS. 1 and 2A and 2B, 1 is a refrigerator main body, 2 is a partition wall that divides the main body 1 into upper and lower parts, 3 is a freezer compartment that is partitioned by the partition wall 2 in the main body 1, Reference numeral 4 is a refrigerating compartment defined by the partition wall 2 below the freezing compartment 3. Reference numeral 5 denotes a cooler, which is composed of parallel plate-shaped fins and meandering heat transfer tubes, and is provided on the back side of the freezing compartment 3 for generating cold air. 6
Reference numeral 7 denotes a blower fan that sends the cool air generated by the cooler 5 to the freezer compartment 3, and 7 cools the freezer compartment 3 and the refrigerating compartment 4 by the cool air generated by the cooler 5, It is a circulation path for circulating the return cold air containing moisture from the refrigerating compartment 4 to the cooler 5. A heater 8 is provided below the cooler 5 for defrosting the frost formed on the cooler 5. Reference numeral 9 is a protective plate for protecting the heater 8 from direct dripping when defrosting the frost formed on the cooler 5. 10 is the protection plate 9
Is a rectifying plate provided above the rectifier to rectify the return cool air containing moisture that circulates in the cooler 5. The straightening plate 10
As shown in FIGS. 2 (A) and 2 (B), has a configuration in which the dimension in the left-right direction is formed to have a predetermined length and is provided so as to correspond to a substantially central position of the heater 8. With the above configuration, the return cool air containing the moisture from the circulation path 7 that circulates in the cooler 5 is not concentrated in the approximate center of the lower part of the cooler 5, and frost can be formed in the lower part of the cooler 5 in a well-balanced manner. As a result, the cooling capacity of the cooler 5 can be prevented from being deteriorated, and the defrosting time can be shortened. Further, as shown in FIGS. 2 (A) and 2 (B), the straightening vane 10 has a lower front edge and is inclined, so that the straightening vane 10 contains moisture from the circulation path 7 circulating in the cooler 5. It is configured to allow the return cold air to circulate mildly. Further, as shown in FIG. 2B, the straightening vane 10 has a plurality of through holes, which will be described later, so that moisture from the trailing edge of the straightening vane and the straightening plate 10 toward the cooler 5 can be prevented. Because the return cold air containing
The return cool air containing the moisture from the circulation path 7 can be circulated to the cooler 5 in the front-rear direction with good balance. In addition, the front and rear ends of the straightening plate 10 are shown in FIG.
As shown in (A) and (B), it is bent in a substantially V shape toward the back surface, so that moisture from the circulation path 7 can be removed from a plurality of through holes and a rear edge of the rectifying plate 10 which will be described later. It is configured such that the returned returned cool air is guided to the cooler 5 in a more balanced manner and rectified. Further, the straightening plate 10
As shown in FIG. 2 (C), by providing a convex portion described later that extends in the front and rear along both ends of a plurality of through holes described below, as shown by the arrow in FIG. 2 (B), From the plurality of through holes described below and the rear edge of the straightening vane 10, the circulation path 7
It is configured so that the returned cool air containing moisture from the above can be guided to the cooler 5 in a more balanced manner and rectified. Further, by forming a convex portion on the back surface of the flow straightening plate 10 which will be described later integrally with the flow straightening plate 10, the size and shape can be accurately finished and the cost is advantageous. As shown in FIGS. 2A and 2B, 10a is a plurality of through holes provided in the current plate 10. By providing a plurality of the through holes 10a, as described above, the return cool air containing the moisture from the circulation path 7 can be guided to the cooler 5 in a well-balanced manner and rectified.
As shown in FIG. 2 (C), 10b are a plurality of convex portions integrally formed on the back surface of the current plate 10 so as to extend forward and backward along both ends of the through hole 10a. The convex portion 10b is connected to the straightening plate.
By integrally forming with 10, as described above,
The size and shape are accurately finished, and the structure is advantageous in terms of cost, and the return cool air containing the moisture from the circulation path 7 is directed to the cooler 5 in a more balanced manner and rectified. ing.

With the above structure, FIGS. 1 and 2A and 2B
As shown in, the freezer 3 generated by the cooler 5
The cool air sent to the cooler cools the interior of the freezer compartment 3 and the refrigerating compartment 4, and the return cool air containing moisture that circulates from the refrigerating compartment 4 through the circulation path 7 to the cooler 5 is the straightening plate. Ten
With this structure, the lower part of the cooler 5 is not concentrated substantially in the center, and thereby the frost can be formed on the lower part of the cooler 5 in a well-balanced manner, and it is possible to prevent the cooling capacity of the cooler 5 from being deteriorated and remove it. The refrigerator can reduce the frost time.

[0008]

As described above, according to the present invention, it is possible to prevent the cooling capacity of the cooler from being lowered, and to shorten the time required for the defrosting operation for melting the frost adhering to the cooler. The refrigerator can reduce power consumption.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator according to the present invention.

FIG. 2 is an explanatory view of a main part of a refrigerator according to the present invention, (A) is a cross-sectional view of the main part, (B) is a view on arrow A shown in (A), and (C) is (A). It is a B arrow view shown.

FIG. 3 is a sectional view of a conventional refrigerator.

4A and 4B are explanatory views of a main part of a refrigerator according to a conventional example, FIG. 4A is a cross-sectional view of the main part, and FIG. 4B is a view on arrow A shown in FIG.

[Explanation of symbols]

 1 Refrigerator main body 2 Partition wall 3 Freezer compartment 4 Refrigerator compartment 5 Cooler 6 Fan 7 Circulation path 8 Heater 9 Protective plate 10 Rectifier plate 10a Through hole 10b Convex part

Claims (7)

[Claims] 1. A cooler which divides the interior into a freezing compartment, a refrigerating compartment, etc. by a partition wall, and which is composed of flat plate-shaped fins parallel to the back side of the freezing compartment and meandering heat transfer tubes, A refrigerator provided below the cooler and provided with a protective plate above to defrost the frost of the cooler, and a fan above the cooler to send cool air to the freezer compartment. The refrigerator according to claim 1, further comprising a straightening plate above the protection plate, the straightening plate for straightening the return cold air circulating in the cooler. 2. The refrigerator according to claim 1, wherein the straightening plate is formed with a predetermined length on the left and right sides and is provided so as to correspond to a substantially central position of the heater. 3. The refrigerator according to claim 1, wherein the straightening plate is inclined with a lower front edge. 4. The refrigerator according to claim 1, wherein the flow straightening plate is provided with a plurality of through holes. 5. The front and rear ends of the current plate are bent in a substantially V shape toward the back surface.
Refrigerator described in a few. 6. The refrigerator according to claim 1, wherein the back surface of the straightening vane is provided with a convex portion extending forward and backward along both ends of the through hole. 7. The refrigerator according to claim 1, wherein the convex portion is formed integrally with the straightening vane.