JP3553778B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a structure with a reduction in the number of parts and assembling man-hour for a cool air blowoff part which sends cool air from a cooler provided at a freezing chamber to a refrigerating chamber to be blown out in a refrigerator with a structure of two chambers upper freezing and lower refrigerating chamber. SOLUTION: A cool air blowoff duct 35 is formed out of a styrene foam the same in quality as a midpartition heat insulating material 22 as partition of the body of a refrigerator which is formed by filling a urethane foam between inner and outer boxes and assembled on the midpartition heat insulating material 22. The cool air blowoff duct 35 is so arranged to stick out to the side of a refrigerating chamber and a hollowed fitting part 46 is provided on the top surface part of a refrigerating chamber part of the inner box 21 to allow receiving of the cool air blowoff duct 35. The fitting part 46 is provided with cool air blowoff ports 47a and 47b to be opened on the refrigerating chamber to match a blowoff port formed in the cool air blowoff duct 35. This enables the formation of a cool air blowoff part to the refrigerating chamber with a simple structure.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator having a freezer compartment at an upper part and a refrigerator compartment at a lower part, and more particularly to a structure of a blow-out part for supplying cool air to the refrigerator compartment.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a small refrigerator-freezer (hereinafter, generally referred to as a refrigerator) used for single use or the like, generally, as shown in FIG. There is a cooler 3 and a blower fan 4 for blowing cool air, and the cool air cooled by the cooler 3 in the freezer compartment 1 is circulated by the blower fan 4 as shown by the arrow, while the cooler 3 is cooled. A part of the cold air which has exchanged heat with the cold room 5 is guided to the cold room 5 by the cold air duct 6, and the leading end of the duct is blown into the cold room 5 from the blowout portion 7 opened at the back of the cold room 5. Then, the cool air circulating through the refrigerator compartment 6 circulates through a return passage (not shown) to return to the cooling compartment 2 where the cooler 3 is located, so that each compartment is cooled.
[0003]
Here, the blowout portion 7 includes a packing 8, a support frame 9, a box-shaped heat insulating material 10 having a cold air vent 10 a communicating with the packing 8 and the cool air vent 9 a of the support frame 9, and It is composed of components such as a resin duct cover 11 attached from below so as to accommodate an assembly in which the packing 8, the support frame 9, and the heat insulating material 10 are superimposed. The duct cover 11 is provided with outlets (indicated by arrows) 12a and 12b for blowing cool air in two directions, a horizontal direction and a vertical direction, so as to uniformly and efficiently cool the inside of the refrigerator. I have. When the duct cover 11 is attached, the temperature of the refrigerator compartment is sensed, and the compressor 52 (provided on the raised bottom 5b at the rear of the refrigerator compartment 5) is turned on at the set upper limit temperature and turned off at the lower limit temperature. The structure is such that a thermostat 12 having a built-in thermostat for operation control is fixed using the thermostat.
[0004]
In addition, between the freezer compartment 1 and the refrigerating compartment 5, the cool air is circulated by, for example, setting the opening area of the outlet so that the freezer compartment 1 has a larger amount of cool air than the refrigerating compartment 5. The chamber 1 is cooled to -18 ° C, and the refrigerating chamber 5 is cooled from + 3 ° C to about + 7 ° C. A heat insulating partition wall 13 is interposed between the freezer compartment 1 and the refrigerating compartment 5 to provide heat insulation between the two compartments.
[0005]
[Problems to be solved by the invention]
However, as described above, the cold air blowing section to the refrigerator compartment 5 is formed from the packing, the support frame, the heat insulating material, the duct cover and the four parts, so that the number of parts increases and these many parts are sequentially connected. Since it is assembled, the number of assembling steps is increased, productivity is low, and costs are high.
[0006]
In addition, since a separate duct cover is attached to the inside of the refrigerator compartment, there is a problem that the duct cover needs to be processed in order to match the color tone in the refrigerator compartment from the viewpoint of design.
[0007]
Furthermore, since a plurality of parts are assembled, the cold air blowout portion is provided in a limited position or location where the work is easy to perform, and lacks design flexibility, so that the cool air can be blown out smoothly. It was difficult to provide a cool air outlet 7 at a better point.
[0008]
Similarly, there is a risk that a gap may be formed due to an error in assembling the components formed by the cool air blowout part during assembly, and that there is a fear that the cool air leaks due to the error, and that the cooling effect is affected. .
[0009]
The present invention has been made in view of the above-mentioned problem, and has a structure in which a blow-out portion for sending cool air to a refrigerator compartment can be formed with a reduced number of parts, thereby improving assemblability, productivity, and reducing manufacturing costs. An object of the present invention is to provide a refrigerator that can be designed.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is configured such that a freezer compartment and a refrigeration compartment are formed into two upper and lower compartments with a heat insulating partition wall interposed therebetween, and a cooler and a blower are provided at the back of the freezer compartment located above. Is provided, while the cool air is circulated to the freezing room, while the cool air is sent to the cold room through the duct, and the cold room is cooled, and the refrigerator is made of styrene foam or the like stored in the heat insulating partition wall. Medium cutting heat material, a cool air inlet for introducing cool air from a duct provided in the medium cutting heat material, a cool air inlet corresponding to the cool air inlet, and an outlet opening to the refrigerator compartment side, Is provided with a cool air duct formed of a heat insulating material such as Styrofoam, and the cold air duct is provided in a lower portion of the intermediate cutting heat material in communication with the cold air inlet, and a fitting for receiving the cold air duct is provided. The top of the refrigerator compartment Formed in, and by providing a cool air outlet in the same position as the air outlet of the cold air duct in this 受嵌 unit, which is constituted of the cool air blowout portion of the refrigerating compartment.
[0011]
In the present invention, the receiving portion may be integrally formed by recessing a top wall portion of the refrigerator compartment portion of a resin inner box in which a freezing compartment portion and a refrigerator compartment portion are formed by molding. It is.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a sectional view of the refrigerator, and FIG. 2 is a front view of the refrigerator with a door removed. First, the refrigerator 10 is filled with a heat insulating material 16 such as urethane foam, and divides the inside of a heat insulating box 17 opened forward by a heat insulating partition wall 18 up and down. Refrigerator compartment 5 is provided below, and the front openings of the freezer compartment 1 and the refrigerator compartment 5 are closed and opened by pivotable heat insulating doors 19a and 19b.
[0014]
In addition, the heat insulating box 17 is made of a synthetic resin such as ABS in which a metal outer box 20 such as a coated steel plate and a freezer compartment 1B and a refrigerator compartment 5B are integrally formed as shown in FIG. The inner box 21 is combined with a required space, and the space formed between the inner and outer boxes is formed by foam filling with urethane foam or the like. In this case, in the heat insulation partition wall 18 existing between the freezer compartment 1B and the refrigerator compartment 5B, styrene foam or the like which performs a heat insulation action together with urethane foam filled in the heat insulation partition 18 is used. The molded intermediate heat material 22 is housed and inserted as one member forming the heat insulating partition wall 18.
[0015]
A cooling chamber 2 is defined at the rear of the freezing chamber 1, in which a cooler 3 is provided at a lower portion and a blower 4 is provided at an upper portion, and cooled by the cooler 3. As shown in FIG. 2, the cool air is blown out from the cool air outlet 50a to the freezing room 1 and circulated by the blower 4 as shown by the arrow so as to return to the cooling room from the suction opening 50b, so that the freezing room 1 is cooled. You.
[0016]
As shown in FIGS. 3 and 7, a cool air supply duct 23 extends from the air outlet of the blower 4 to the refrigerator compartment 5 so as to send cool air to the refrigerator compartment 5. A space between the cool air discharge duct 23 and the cool air blow-out portion 26 on the side of the cool room where the cool air is finally blown out to the cool room 5 is provided in the intermediate heat cutting material 22. It is configured to be relayed by a cool air blowing duct 35. The structure of the cool air blowing duct 35 and the like will be described later.
[0017]
The cold air blowing section 26 formed in the refrigerator compartment 5 is provided with a lower air outlet 27a and a front air outlet 27b so as to blow cold air in two directions, downward and forward. After the cool air blows out and circulates into the refrigerator compartment 5 as indicated by the arrow shown in FIG. 5, the cool air return opening to the refrigerator compartment 5 through the cool air return duct 28 formed at the central position in the intermediate cutting heat material 22. The refrigerating room 5 is circulated so as to return to the cooling room 2 from the opening 28a, so that the refrigerating room 5 is cooled.
[0018]
Now, the duct for blowing out the cold air will be described. First, the above-mentioned intermediate cutting heat material inserted into the space 29 between the freezing compartment 1B and the refrigerator compartment 5B of the inner box 21 before foam molding. 22 is configured as shown in FIG.
[0019]
On the upper side of the intermediate cutting heat material 22, a rectangular hole-shaped cold air inlet 30 penetrating vertically is provided on one side at the rear end, and the cold air inlet 30 and the cold air feeding port 30 are provided. Is connected to the lower end of the duct 23. A gutter-shaped dew receiving portion 31 is provided alongside the cool air inlet 30 so as to receive drain water from the cooler 3 so that the bottom surface is inclined so as to become lower from both sides toward the center. A square hole 32 is formed at the center of 31 to serve as an outlet for dew and an upper cool air return port for returning cool air from the refrigerator compartment 5 to the cooler 3. In addition, the upper surface of the dew receiving portion 31 is provided so as to cover the dew receiving plate 33 made of aluminum.
[0020]
On the other hand, a portion corresponding to the cold air inlet 30 at the rear end portion of the intermediate cutting heat material 22 is recessed on the inside thereof, as shown in FIGS. are doing. As described below, a cool air blow-off duct 35 formed of styrofoam or the like made of the same material as the intermediate cutting material 22 is fitted into and fixed to the space 34.
[0021]
A cold air outlet duct 35 is made of the same material as the above-mentioned intermediate cutting material 22, such as styrene foam, as described above. The cold air inlet 36 has an upper surface that receives cold air from the cold air inlet 30. Is formed as a rectangular duct having a height such that it slightly protrudes into the refrigerator compartment 5 at the top surface 5t of the refrigerator compartment 5. A lower outlet 37a for blowing cool air downward is formed in the inner bottom surface of the duct, and a front outlet 37b for blowing cool air forward is cut in a part of the side peripheral wall 35a of the duct. Notch is formed.
[0022]
Numeral 38 is a cold air return duct heat insulating material which is assembled to a longitudinally extending concave portion provided in the central portion on the back side of the intermediate cutting heat material 22 to constitute the cold air return duct 28, and is also made of styrene foam or the like. Become. The cool air return duct heat insulating material 38 is provided with a cool air suction port 28a from the refrigerating chamber 5 at the front end thereof, and an upper cool air return port (square hole) 32 provided at the middle cutting heat material 22 at the rear end thereof. The lower cool air return port 39 communicating with the lower portion is formed slightly concave. The lower cool air return port 39 is a square hole having an opening area larger than that of the upper cool air return port 32, and a dew receiving plate 40 made of synthetic resin is fitted therein. Also in this case, the upper opening of the dew receiving plate 40 serves as a dew receiving port, and also serves as a cool air return port for returning the cool air from the refrigerating room 5 from the upper cool air return port 32 to the cooling room 2.
[0023]
The dew receiving plate 40 has a drain hole 41 on the inner bottom surface thereof, and a connecting tube portion 42 to which the tip of the drain hose 50 is connected protrudes from the bottom portion, and the connecting tube portion 42 returns cold air. The duct heat insulator 38 is inserted into a receiving hole 43 formed in the center of the lower cool air return port 39.
[0024]
In the middle cut heat material 22, the upper surface corresponding to the bottom surface of the freezer compartment 1B of the inner box 21 is recessed at a uniform depth to form a concave surface portion. When the concave portion 44 is provided in this way, when the space between the inner box 21 and the outer box 20 is filled with urethane foam and the main body of the refrigerator is foamed, the urethane foam is also filled in the concave portion 44 and solidified after filling. Thus, a rigid structure can be provided in which the bottom surface of the freezer compartment 1B can be firmly supported from the back side.
[0025]
In this way, before the foaming molding, the inside cut heat material 22 in which the cold air outlet duct 35, the cool air return duct 18, the cold air return port 32 also serving as the dew receiving port and the like are formed, as shown in FIG. It is incorporated in the space 29 between the unit 1B and the refrigerator compartment 5B. In this case, since the portion of the cool air blow-out duct 35 is present as a protruding portion projecting downward, the front side of the refrigerator compartment 5B is stepped toward the inner box 21 so as to receive the projecting blow-out duct 35. A receiving portion 46 having a shape conforming to the blowout duct 35 provided in a concave shape is integrally formed so as to protrude inside the refrigerator compartment 5. In this case, the bottom wall 46a and the peripheral wall 46b of the recessed receiving portion 46 also serve as a cover member that covers the side portion and the bottom portion of the cool air duct 35, and thus also serves as the conventional duct cover 10. .
[0026]
The bottom wall 47a and the side wall 47b of the receiving portion 46 are aligned with the lower outlet 37a and the front outlet 37b provided in the cool air outlet duct 35, respectively. An outlet 47b is formed.
[0027]
In this way, if the outer box 20 is combined with the inner box 21 in which the intermediate cutting heat material 22 is incorporated between the freezer compartment 1B and the refrigerating compartment 5B and foamed, the urethane foam 16 is filled between the inner and outer boxes. A heat insulating body 17 of the refrigerator is formed. Then, a refrigerator having a cool air supply structure schematically shown in FIG. 7 is formed, in which cool air is sent from the cool air blow-out duct 35 provided in the intermediate cutting heat material 22 to the refrigerator compartment 5. The details are as shown in FIG. 6, and the cool air from the freezing room 1 flows through the cool air inlet 30, the cool air outlet duct 35, the cool air return duct 28, the cool air return port 32, etc. As described above, the air is blown out to the refrigerator compartment 5 and circulated to return to the freezer compartment 1 so that the refrigerator compartment 5 is cooled smoothly.
[0028]
As described above, the cool air blow-out portion can be formed with a small number of blow-off ducts 35 formed of the same heat insulating material as the intermediate cutting heat material 22, thereby reducing the number of parts, assembling man-hours, and manufacturing costs. Lowering the productivity and improving the productivity.
[0029]
【The invention's effect】
As described above, according to the present invention, the blowout duct formed of a heat insulating material of the same material as the intermediate cutting heat material such as Styrofoam stored in the heat insulating partition wall that vertically separates the freezing room and the refrigerating room has a middle partition. It is provided connected to the cold air inlet provided in the heat insulating material, and this cutting duct is equipped with a cut-out cutting heat material that is equipped in the lower part, when it is inserted between the freezer compartment and the refrigerator compartment of the inner box, The blow-out duct fits into a receiving portion provided to be recessed in the refrigerator compartment on the inner box side, and blow-out openings formed on the blow-out duct side and the receiving portion side respectively match with each other to send cool air to the refrigerator compartment. The structure is such that the cold air blowout portion is easily assembled and formed.
[0030]
As a result, the only components of the cool air blow-out section are the blow-off ducts formed of the same heat insulating material as the middle cutting material, eliminating the need for many parts as in the past, reducing the number of parts and reducing the number of assembly steps. it can.
[0031]
In addition, by applying a process to make a receiving part that matches this blowing duct on the inner box, the cool air blowing part can be easily completed, and this receiving part is formed integrally with the resin inner box without forming Since it can be formed, there is no particular difficulty in manufacturing.
[0032]
Also, since the inner box itself, in which the blow-out duct is covered by the receiving part formed in the inner box, also serves as the duct cover member, the duct cover and the inner box as in the case of using the conventional separate duct cover are used. It is no longer necessary to provide the same color tone.
[0033]
In addition, a separate blow-out duct can be installed at the desired location of the intermediate cutting heat material, so the duct position can be set freely, and it will be possible to smoothly respond to changes in models and production of various types of products . Furthermore, since the number of parts is small and the number of assembly parts is small, the cool air blow-out part has a structure in which no gap is densely formed, so that the cool air leakage is eliminated, and the temperature control of the refrigerator compartment becomes stable, etc. It has excellent effects.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional side view of a refrigerator according to the present invention.
FIG. 2 is a front view of the refrigerator in which a door is removed and cooling air is circulated.
FIG. 3 is a front view seen from the back side of the refrigerator, illustrating how the cool air is sent to the refrigerator compartment by the duct and the refrigerator compartment is cooled.
FIG. 4 shows an inner box in which a freezer compartment and a refrigerating compartment are formed, and components of the inner box which are made of polystyrene foam interposed between the freezer compartment and the refrigerating compartment before foam molding. It is an exploded perspective view.
FIG. 5 is an exploded perspective view of components such as a blow-out duct which forms a cool air blow-out portion to a refrigerating compartment together with a middle-cut cutting heat material.
FIG. 6 is a perspective view showing the appearance of a cut-in-section heating material in a state in which cool air is supplied to a refrigerator compartment by a cool air blowing duct provided at a lower portion.
FIG. 7 is a structural view of a refrigerator schematically illustrating a structure for supplying cold air to a refrigerator according to the present invention.
FIG. 8 is a schematic structural perspective view of a conventional refrigerator in which a cool air outlet to a refrigerator compartment is composed of a number of components.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Freezer compartment 3 Cooler 4 Blower 5 Refrigerator compartment 18 Insulated partition wall 20 Outer case 21 Inner case 26 Cold air outlet 30 Cold air inlet 35 Cold air outlet duct 36 Cold air inlet 37a Lower outlet 37b Front outlet 46 Receiving part 47a Lower part Cold air outlet 47b Front cold air outlet

Claims (2)

A freezer compartment and a refrigerator compartment are formed in two upper and lower compartments by a heat insulating partition wall interposed therebetween, and a cooler and a blower are disposed in the deep portion of the freezer compartment located at the upper portion, and cool air is supplied to the freezer compartment. In a refrigerator in which cold air is sent to a refrigerator compartment through a duct while being circulated by air, and the refrigerator compartment is cooled,
A middle-section cutting heat material such as styrofoam housed in the heat-insulating partition, a cool-air inlet for introducing cool air from a duct provided in the middle-section heating material, a cool-air inlet corresponding to the cool-air inlet, and refrigeration. A cold air duct formed of a heat insulating material such as Styrofoam, and having a blow-out opening that opens to the chamber side, and the cold-air duct is provided at a lower portion of the intermediate cutting heat material by communicating with the cold-air inlet. On the other hand, by forming a receiving portion for receiving the cold air duct on the top surface of the refrigerator compartment and providing a cold air outlet at the same position as the outlet of the cold air duct in the receiving portion, refrigeration is performed. A refrigerator comprising a cool air outlet to a room. The said fitting part was recessed and formed integrally with the top wall part of the said refrigerator compartment part of the resin inner box in which the freezer compartment part and the refrigerator compartment part were formed and formed by shaping, The said fitting part characterized by the above-mentioned. The refrigerator according to claim 1.

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