JP3389400B2 - 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 of a type in which cold air is blown out from the rear surface of the refrigerator to cool the inside of the refrigerator. The present invention relates to a refrigerator which is suitably modified to prevent leakage through the back side door packing provided in the refrigerator.

[0002]

2. Description of the Related Art Refrigerators mainly use a cold air forced circulation type in which cold air that has exchanged heat with an evaporator is forcedly circulated by a cold air circulation fan to cool the air. Then, a method is generally adopted in which the cool air is blown out forward by a plurality of cool air outlets which are formed in the back of the refrigerator in the vertical direction at appropriate intervals.

FIG. 5 is an external view of such a cold-air-blowing type refrigerator when the inside of the refrigerator is opened, and FIG. 6 is a schematic structural diagram thereof, in which the refrigerator 1 uses electricity or gas as a driving energy source. A refrigeration unit to be operated is installed, and the inside of the main body 2 of the heat insulation structure is divided into three chambers.
The refrigerator compartment 3, the freezer compartment 4, and the vegetable compartment 5 are divided into sections from the top. Here, the freezer compartment 4 and the vegetable compartment 5 below it are
Each of the compartments is constituted by a pull-out type article storage case 6 and 7, and the uppermost refrigerating compartment 3 is provided with a door packing 8 with a magnet attached to the periphery of the back surface in the form of a frame. The front opening 11 is hermetically closed to form the interior 12.

Further, on the back surface of the door 9 in the refrigerating room 3 having a plurality of shelves 13 arranged therein, some storage portions are provided inside the door 9 so that the warp and small food items can be stored. 1
An in-door pocket 15 that divides 4 is provided. As shown in FIG. 6, these chambers 3, 4 and 5 are provided with ventilation passages 18a and 18b formed in the rear portions of the upper and lower heat insulating partition walls 16 and 17 and the main body 2 on the front side of the main body 2. The air passages 19 formed vertically inside the side walls communicate with each other.

A cooling chamber 23, which is a cold air generating portion in which an evaporator 21 and a cold air circulation fan 22 are arranged, is provided in the inner part of the freezing chamber 4 in the middle, and along the cooling chamber 23, a front part thereof is provided. A freezing compartment duct 24 into which the cold air from the cooling compartment 23 is introduced is formed in the vertical direction. When the cool air enters the freezing compartment duct 24, it is formed in the duct 24 in the vertical direction at appropriate intervals, and the freezing is performed. While the cool air is blown forward from a plurality of cool air outlets 25 opening in the widthwise direction of the chamber 4,
The freezing chamber 4 is cooled by recirculating back to the cooling chamber 23 as indicated by the arrow.

Further, a refrigerating compartment duct 26 is formed in the upper refrigerating compartment 3 in the longitudinal direction along the inner surface of the back wall of the refrigerating compartment 3, and cold air is circulated in the refrigerating compartment duct 26 by the cold air circulation fan 22. Through the freezer duct 24. Since the refrigerating compartment duct 26 is also provided with a plurality of cool air outlets 27 that are vertically aligned at appropriate intervals and open in the lateral width direction of the refrigerating compartment 3, these cold air outlets are indicated by arrows. Cold air is blown forward from 27 so as to be distributed between the shelves 13, and the refrigerating chamber 3 is cooled.
Further, the cold air that has passed through the refrigerating chamber 3 is guided to the lowest vegetable chamber 5 by the ventilation passage 19 and circulates through the vegetable chamber 5, and then returns from the ventilation passage 18b to the cooling chamber 23 as shown by an arrow in the figure, and then again the freezing chamber. 4. It is sent to the refrigerating room 3 and circulates. Reference numeral 28 denotes a compressor provided in the lower portion of the main body 2, which is connected to the evaporator, a condenser (not shown), and a decompression device (not shown) in an annular shape by a refrigerant pipe to form a refrigeration cycle (refrigeration device).

[0007]

However, when the cool air is blown out from the plurality of cool air outlets 25 provided at the back of the inside of the refrigerator as described above, the blown cold air is blown out from the door 9 as shown in the enlarged view of FIG. The door packing 8 directly hits the door packing 8, and the door packing 8 is cooled by cold air, and a heat leak occurs. In particular, at the topmost cool air outlet 27A of the refrigerator compartment 3,
Since the cool air generated in the freezer compartment 4 is guided to the upper part of the refrigerating compartment 3 by the cool air circulation fan 22, the blowout pressure is high, and the cool air blown out from here also has an adsorption effect on the ceiling wall surface 31,
Since the cool air vigorously flows along the ceiling surface 31, heat loss of the cool air to the outside of the refrigerator is likely to occur via the upper door packing 8, resulting in an energy loss that the amount of electricity and gas used is uneconomically increased. Was there. Although such heat loss is small from the perspective of the refrigerator as a whole, the number of popularized units (operating units) is large, which is socially enormous and poses a problem that requires resolution to prevent effective use of limited resources. .

The present invention has been made in view of the above points, and is provided with a means for changing the flow direction of the cold air blown out forward with a door so as not to directly hit the door packing. Energy saving (power saving, etc.) by reducing heat loss
It is an object of the present invention to provide a refrigerator capable of achieving the above and improving the cooling efficiency.

[0009]

In order to achieve the above object, the invention according to claim 1 is provided with a heat-insulating door for opening and closing a front opening of a storage main body having a heat insulating structure in which a refrigerating apparatus is mounted. In the closed and hermetically closed by the door packing attached to the back, cold air is blown out forward from a plurality of vertically arranged cold air outlets provided at the back of the inside of the refrigerator and by a cold air circulation fan. In a refrigerator in which the inside of the refrigerator is forcibly circulated to cool the inside of the refrigerator, a ceiling wall of the inside of the refrigerator has a position close to the opening so as to change the wind direction so that blown cold air does not hit the door packing , Required settings
The height of the storage is almost the same as the width of the storage.
A cold airflow changing protrusion is formed, and in the vicinity of the cold airflow changing protrusion, above the back surface of the door, cool air with a changed wind direction goes to the door packing after passing through the cold airflow changing protrusion. The cold air flow change that prevents the escape
Like the protrusion, it extends horizontally across the width of the storage.
It is provided with a cold air escape prevention wall provided so as to exist.

According to a second aspect of the present invention, the cold air flow changing projection is formed of a transparent resin member.

Further, in the invention of claim 3, the cold-air escape blocking wall is located above the inner pocket for accommodating stored items, which is provided inside the door, and has a height within a projecting range of the cold-air flow changing projection. It is provided so as to extend horizontally at a certain position and to have an extension length that secures an opening for taking in and out of stored items.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Note that the same or corresponding components as those of the conventional device shown in FIGS. 5 to 7 are designated by the same reference numerals.

As shown in FIG. 2, the ceiling surface 31 of the refrigerator compartment 3
Is vertically formed so as to hit the cold air that is blown out from the back of the inside 12 and flows obliquely upward along the ceiling surface 31, and the cold air that hits is directed downward, and the door packing 8 A cold air flow changing projection 33 is provided to change the direction of flow of cold air so as not to directly hit the. The projection height of the cold air flow changing projection 33 and the position where it is provided are changed so that the blown cold air does not hit the door packing 8, and the effect of preventing contact with the door packing 8 can be greatly obtained. It is formed at a position close to the opening 11 with a set dimension height and a width substantially the same as the lateral width of the refrigerating chamber 3. Further, the cold air flow changing projection 33 is preferably formed of a transparent resin member so as not to be conspicuous when the door 9 is opened so as not to impair the appearance and discomfort.

Now, in addition to the cold air flow changing projection 33,
The cold air which has hit the cold airflow changing projection 33 and directed downward is guided so as to flow downward along the inner surface of the door 9 as indicated by the arrow, and the cool air escapes upward behind the cold airflow changing projection 33. A cold air flow blocking wall (baffle wall) 34 that blocks the upper air side wall packing 8 from being directed toward the upper door packing 8 as shown in FIG. It is provided so as to extend horizontally across the width of the refrigerator compartment 3. The cold air escape prevention wall 34 is provided at a height position higher than at least the lower end of the cold air flow changing projection 33 projecting from the ceiling of the interior 12 so that the cold air flow changing projection is provided. Three
The cooling air is prevented from leaking to the outside through the gap portion 35 formed between the ceiling wall 31 and the ceiling wall 31 so as to surely obtain the cooling air blocking effect. Further, the facing distance between the cold air escape blocking wall 34 and the cold air flow changing projection 33 is also set to be short so that the above-mentioned cold air blocking effect can be sufficiently obtained.

Thus, the inner pocket 15 of the door is substantially
The cold air escape blocking wall 34, which can be said to be the upper wall of the device, prevents the cold air from flowing out. However, when the cold air escape blocking wall 34 is provided, its inward protruding dimension is the inner pocket as in the above-described embodiment. If the projection width L is equal to 15, the cold air escape prevention wall 34 will be a little obstruction when the stored goods are taken in and out of the inner pocket 15 of the door, so that the embodiment shown in FIGS. It is also conceivable that the cold-air escape blocking wall 34B may be cut off from the tip thereof by about 1/3 and regulated to a short projecting size. According to this example,
Since the take-out port 36 (see FIG. 3) for facilitating the taking in and out of stored items can be secured above the inner pocket 15 of the door, the taking-in and taking-out operation of the articles can be easily performed.
Improves usability. Of course, in the case of this embodiment, as shown in FIG. 4, at the same time, the position of the cooling air flow changing projection 33B is further shifted toward the opening 11 so as to approach the shortened cooling air escape prevention wall 34B, and the ceiling surface is moved. It will be installed in.

Further, the cold air escape prevention walls 34, 34B are
If it is provided so as to be slightly inclined toward the door 9 rather than being horizontal, the cold air escape prevention effect can be obtained even more strongly.

The present invention is configured as described above, and therefore, the cold air blown out from each cold air outlet 27 of the refrigerating compartment duct 26 is blown out, particularly from the uppermost cold air outlet 27A, to the inside ceiling surface 31. The cold air flowing along the upper door packing 8 directly hits the ceiling wall 31 of the refrigerator compartment 3.
By hitting the cold airflow changing projection 33 that is descending from above, the wind direction of the cool air from upward to downward is forcibly changed. Thereafter, the cold air whose flow changes further downward is not only prevented from escaping to the outside with the upper door packing 8 by the cold air escape blocking wall 34 provided in the upper portion of the inner pocket 15 of the door. , Cold air escape prevention wall 34, 34B
Thus, it is prevented that the air is guided inward as shown by the arrow to circulate in the refrigerating chamber 3 and the cold air directly hits the upper door packing 8.

As a result, the heat loss due to the heat leak of the cool air can be greatly suppressed through the door packing 8, the cooling efficiency is improved, the power consumption is reduced, and the energy saving effect is sufficiently obtained. Then, it is possible to surely enhance the cooling effect of the entire inside of the refrigerator in which the cold air in the refrigerating compartment 3 is sufficiently cooled and a sufficient amount of cold air is sent to the vegetable compartment 5 and the vegetable compartment 5 is also sufficiently cooled. .

[0019]

As described above, according to the present invention, the cool air flow changing projection on the ceiling surface of the inside of the refrigerator and the cool air escape prevention wall at the upper portion of the inner pocket of the door cool the air blown from the back of the inside of the refrigerator. However, the wind direction was changed so that it would not hit the door packing directly, and a cold air flow that flows inward inside the refrigerator was created, so the cold air that hits the door packing directly is significantly reduced compared to the conventional case. As a result, heat loss to the outside through the cold air door packing is reduced, and the inside of the refrigerator can be efficiently cooled. As a result, it is possible to provide a refrigerator that can contribute to the social contribution of saving energy by reducing the amount of power consumed for cooling the inside of the refrigerator.

Further, since the heat loss is reduced and the cooling efficiency is increased, it is possible to use a refrigerating apparatus having a small cooling capacity. Moreover, since the structure is a heat leak leakage prevention structure having a simple structure, the manufacturing cost is reduced and the refrigerator is compact. Can be achieved.

Further, by forming the cold air flow changing projection by a transparent resin member, even if the cold air flow changing projection is provided on the ceiling surface in the refrigerator, it becomes inconspicuous and can be used without any uncomfortable feeling for the user. Becomes

Further, by providing the cold air escape prevention wall at a height position overlapping the cold air flow changing projection, the heat loss prevention effect can be increased and the energy saving effect can be further enhanced. Even if a cool air escape prevention wall is provided inward in the door pocket, the opening / closing opening for the stored items is secured above the door internal pocket by regulating the extension degree to an appropriate length. Therefore, it is possible to keep things in and out without inconvenience, and to maintain the usability as before.

[Brief description of drawings]

FIG. 1 is an external perspective view of a refrigerator according to the present invention having a cool air heat leak prevention structure on the back surface of the door when the door is opened.

FIG. 2 is a longitudinal sectional view of an essential part for explaining a heat leak preventing action of the cold air heat leak preventing structure.

FIG. 3 is an external perspective view of a refrigerator having a cool air heat leak prevention structure according to another embodiment when the door is opened.

FIG. 4 is a longitudinal cross-sectional view of a main part for explaining a heat leak prevention action of the cold air heat leak prevention structure of the embodiment.

FIG. 5 is an external perspective view of a conventional refrigerator without a cool air heat leak prevention structure when the door is opened.

FIG. 6 is a vertical cross-sectional side view of the conventional refrigerator for explaining the appearance of heat leak of cold air.

FIG. 7 is an enlarged structural cross-sectional view of a refrigerating chamber showing an aspect of causing a heat leak of cold air.

[Explanation of symbols]

1 refrigerator 3 refrigerating room 8 door packing 9 doors 11 Front opening 12 Inside 15 Door inner pocket 21 evaporator 22 Cold air circulation fan 26 Refrigerator Duct 27, 27B Cold air outlet 31 Inside Ceiling Wall 33 Cold air flow changing protrusion 34, 34B Cold air escape prevention wall

Front Page Continuation (72) Inventor Hitoshi Aoki 2-5-5 Keihan Hon-dori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (56) References 63-134371 (JP, U) Actual 62 −173655 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 17/08 307

Claims (3)

(57) [Claims] 1. An interior provided with a heat-insulating door that opens and closes a front opening of a storage main body having a heat-insulating structure in which a refrigerating device is mounted, and the door is closed and hermetically closed by a door packing attached to the back thereof. In a refrigerator in which cold air is blown forward from a plurality of vertically arranged cold air outlets provided at the back of the inside of the refrigerator and forcedly circulated by a cold air circulation fan to cool the inside of the refrigerator, of the ceiling wall, blown cool air is close to the opening so as varying the wind direction so as not hit the door packing
In the desired position and at the required height, beside the storage
A cold airflow changing projection formed over almost the same width as the width is provided, and cold air with a changed wind direction passes over the cold airflow changing projection above the back surface of the door in the vicinity of the cold airflow changing projection. The cold air flow changing projections that prevent it from escaping towards the door packing after
A refrigerator provided with a cold-air escape blocking wall which is provided so as to extend horizontally across the width direction . 2. The refrigerator according to claim 1, wherein the cold air flow changing protrusion is formed of a transparent tree member. 3. The cold air escape prevention wall extends horizontally at a height position within the projecting range of the cold air flow changing projection, above an internal pocket for accommodating stored items provided inside the door. The present invention is characterized in that it is provided while being limited to an extension length that secures an opening for taking in and out of stored items.
Refrigerator described in item.