KR100333532B1 - refrigerator having a bell mouth of cold storage room-fan with integral lining - Google Patents

Abstract

The present invention relates to a refrigerating compartment fan mounting structure of a refrigerator to which two cold air circulation fans are applied, in which air in a freezer compartment is sucked through a freezer compartment return duct communicating with a freezer compartment, which is exchanged by an evaporator in an evaporator chamber located behind the freezer compartment. A refrigerator comprising: a refrigerator compartment fan for discharging and circulating cold air into a freezer compartment, and a refrigerator compartment fan for suctioning air in the refrigerating compartment through a refrigerating compartment return duct and discharging and circulating cold air heat-exchanged by the evaporator to the refrigerating compartment through a refrigerating compartment cold air duct. The refrigerating compartment fan is mounted in a refrigerating compartment separately from the freezing compartment fan to form an internal wound integrated bell mouse connected to the refrigerating compartment cold air duct.

Accordingly, the present invention prevents the pressure loss of the cold air discharged into the refrigerating compartment through the refrigerating compartment cold air duct from the evaporator located behind the freezer compartment of the freezer compartment by forming a bell mouth (bell mouth) integral with the internal wound is installed in the refrigerating compartment. It is possible to increase the refrigeration efficiency and to simplify the structure of the bell mouse to reduce the number of parts to reduce the production cost and reduce the amount of waste in the refrigerator.

Description

Refrigerator having a bell mouth of cold storage room-fan with integral lining}

The present invention relates to a refrigerator which circulates cold air exchanged by an evaporator of a freezing cycle into a freezer compartment and a refrigerating compartment so that food can be frozen / refrigerated, and more specifically, a freezer compartment fan and a refrigerating compartment fan are respectively provided for cold air circulation. It relates to a two fan refrigerator.

Generally, a refrigerator is used to keep various foods in a frozen and refrigerated state to maintain freshness for a long time. A direct cooling method of installing a evaporator of a refrigerating cycle in a food storage space for direct heat exchange. And an indirect cooling method in which the evaporator is installed on a passage separated from the food storage space and the heat exchanged through the evaporator is forced to circulate through the blowing force of the fan to cool the stored food.

1 and 2, the freezing chamber 110 and the refrigerating chamber 120 are vertically isolated by the trimmer 103 installed in the center in the transverse direction, so that each door 111 is inverted. It is configured to open and close by the 121, the evaporator chamber 113 for the heat exchange is formed inside the freezer compartment 110, the evaporator 157 of the refrigerating cycle is built.

In addition, a freezer compartment return duct 115 for communicating the freezer compartment 110 with the evaporator chamber 113 is formed at an upper surface of the trimmer 103, and a refrigerating compartment 120 is provided at the bottom of the trimmer 103. A refrigerating chamber return duct 123 for communicating with the evaporator chamber 113 is formed, and a refrigerating chamber cold air duct 125 for communicating the refrigerating chamber 120 is formed at an upper end of the evaporator chamber 113.

In addition, the upper end of the evaporator chamber 113 sucks air from the freezer compartment 110 from the freezer compartment return duct 115 and exchanges the cold cold air exchanged by the evaporator 157 in the evaporator chamber 113 through the freezer compartment outlet 119. A freezer compartment fan 117 is provided to circulate the discharge to the freezer compartment 110. One side of the freezer compartment 117 sucks air from the refrigerating compartment 120 from the refrigerating compartment return duct 123 in the evaporator chamber 113. A refrigerating chamber fan 127 is provided for discharging and circulating the cold cold heat exchanged by the evaporator 157 to the refrigerating chamber 120 through the refrigerating chamber cold air duct 125.

Therefore, the cold cold heat exchanged by the evaporator 157 in the evaporator chamber 113 is discharged and supplied to the freezing chamber 110 by the freezing chamber fan 117, and the supply cold air stays in the freezing chamber 110 for a predetermined period of time to increase in temperature. When the freezing chamber return duct 115 of the trimming section 103 is returned to the evaporator chamber 113, the return cooler repeats heat exchange with the evaporator 157 of the evaporator chamber 113 to remove food from the freezer compartment 110. Allow for freezing.

On the other hand, the cold cold heat exchanged in the evaporator 157 of the evaporator chamber 113 is supplied to the refrigerating chamber 120 through the refrigerating chamber cold air duct 125 by the refrigerating chamber fan 127, the supply cold air is supplied to the refrigerating chamber 120 If the temperature rises while staying for a certain period of time, the reflow chamber duct 123 of the trimming section 103 flows back into the evaporator chamber 113 while repeating heat exchange with the evaporator 157 of the evaporator chamber 113 to maintain the refrigerating chamber 120. Allow food to be refrigerated.

However, as described above, in the two-fan refrigerator having the refrigerator compartment fan 127 and the freezer compartment 117 mounted therein, the freezer compartment 117 is mounted in the evaporator chamber 113 located at the rear of the freezer compartment 110. Since the pressure loss of the cold air discharged into the refrigerating chamber 120 is generated through the relatively long refrigerating chamber cold air duct 125, there is a problem in that the rapid cold air supply to the refrigerating chamber 120 may not be efficiently performed.

In addition, since the freezing compartment fan 117 and the refrigerating compartment fan 127 are concentrated at the rear of the freezing compartment 110, the supply of cold air in the freezing compartment 110 is not uniform due to the narrow space of the freezing compartment fan 117. Due to concentration there is a problem that inhibits the surrounding environment.

Accordingly, many refrigerator technologies have been researched and developed to solve the problem of cold air discharge pressure loss caused by the installation of the refrigerator compartment fan. For example, the refrigerator refrigerator compartment fan installation structure disclosed in Korean Patent Application Publication No. 98-084859 is disclosed. Can be mentioned.

The refrigerator refrigerating compartment fan installation structure of Korean Patent Application Laid-Open Publication No. 98-084895 is configured to insert the refrigerating compartment fan into one side of the louver insulator so that cold air introduced into the evaporator chamber is discharged by the bypass passage in a reverse direction. In order to reduce the decrease in speed, the fundamental problem is that both the freezer compartment and the refrigerating compartment fan are mounted behind the freezer compartment of the freezer compartment, that is, the cold air passing through the evaporator compartment must exit the refrigerating compartment cold air duct of the main passage by the refrigerator compartment fan. Problems such as pressure loss and fan noise and narrow installation space cannot be solved.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, by mounting the refrigerator compartment fan in the bell mouse integrated with the refrigerator compartment inner phase, the cold air discharged from the evaporator located behind the freezer compartment of the freezer compartment through the cold air duct to the cold compartment The aim is to provide a refrigerator that can prevent pressure loss and simplify the structure of the bell mouse.

Figure 1 is a side cross-sectional view showing the internal structure of a conventional two fan application refrigerator.

2 is a partial cross-sectional view of the front of the refrigerator shown in FIG.

Figure 3 is a side cross-sectional view showing a refrigerator provided with an internal wound integrated refrigerator compartment bell mouse according to an embodiment of the present invention.

4 is a front view of the refrigerator according to the embodiment of the present invention shown in FIG.

5 is a cross-sectional plan view showing a refrigerator compartment mounting structure of the refrigerator according to the embodiment of the present invention shown in FIG.

Figure 6 is a side cross-sectional view showing a refrigerator compartment mounting structure of the refrigerator according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: freezer 11, 21: door

13: evaporator chamber 15: freezing chamber return duct

17: freezer compartment fan 19: freezer compartment discharge port

20: refrigerator compartment 23: refrigerator compartment return duct

24: refrigerating chamber discharge duct 25: refrigerating chamber cold duct

26: duct member 27: refrigerator compartment fan

28: refrigerating chamber discharge duct 30: Bell Mouse

31: internal wound 32: indentation

33: connection hole 35: duct cover

37: insulation member 38: connection passage

40: backflow prevention mechanism 41: valve plate

According to a feature of the present invention for achieving the above object, through the freezer compartment return duct in communication with the freezer compartment by suctioning the air in the freezer compartment discharge cold air heat exchanged by the evaporator of the evaporator chamber located behind the freezer compartment discharge circulation A refrigerator comprising: a refrigerator compartment fan and a refrigerator compartment fan configured to suck air from the refrigerator compartment through a refrigerating compartment return duct to discharge and circulate cold air heat-exchanged by the evaporator to the refrigerator compartment through a refrigerator compartment cold air duct. Separately provided in the refrigerator compartment provides a refrigerator to form an internal wound integrated bell mouse connected to the refrigerator compartment cold air duct.

At this time, according to an additional feature of the present invention, the bell mouse is formed by the semi-cylindrical concave portion of the inner portion of the refrigerating compartment is formed with a rear portion communicating with the refrigerating compartment cold air duct, by the semi-cylindrical duct cover which is covered in front of the inner image. It is preferable that the front part is integrally formed.

In addition, the recess portion of the inner phase is formed in the center of the rear side of the refrigerating compartment, the duct cover is formed of a heat insulating member having a predetermined thickness to form a connection passage communicating with the refrigerating compartment discharge ducts located at both ends, the refrigerating compartment The fan is preferably installed at both ends of the fan motor horizontally installed at the center of the bell mouse so as to blow cold air from the refrigerating chamber cold air duct to the refrigerating chamber discharge duct.

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

3 and 4 illustrate a refrigerator according to an embodiment of the present invention, wherein the refrigerator includes a main body in which the freezing compartment 10 and the refrigerating compartment 20 are vertically separated by a trimming section 3 installed in a transverse direction in the center portion ( 1) and a refrigerating cycle mounted on the main body 1 for heat-exchanging the air in the freezer compartment 10 and the refrigerating compartment 20, and circulating such that the air in the freezer compartment 10 and the refrigerating compartment 20 is exchanged by the refrigerating cycle. And a flow passage means for forming a flow path, and blowing means for forcibly circulating air in the freezing chamber 10 and the refrigerating chamber 20 with the flow path means.

In other words, doors 11 and 21 for rotatably opening and closing the freezer compartment 10 and the refrigerating compartment 20 are hinged to the front of the main body 1, and the inclined surface of the vegetable compartment is provided at the rear end of the refrigerating compartment 20. The machine room 50 for receiving a part of the refrigerating cycle is formed, the evaporator chamber 13 is formed behind the freezing chamber 10.

In addition, the refrigeration cycle is a compressor (51) for adiabatic compression of the low-temperature, low-pressure gas refrigerant to a high-temperature, high-pressure gas state, and the refrigerant compressed in the high-temperature, high-pressure gas state in the compressor 51 to the outside air A condenser (53) for cooling and condensing through heat exchange with a liquid at a temperature of 40 ° C and a pressure of 9 atm, and an expansion valve for lowering the high pressure and liquid refrigerant into a saturated refrigerant. 55 and an evaporator 57 which absorbs heat in the evaporator chamber 13 by evaporating the refrigerant depressurized by the expansion valve 55 to a low temperature (-30 ° C.) in a low pressure state (0 atm or less). do. At this time, the compressor 51 and the condenser 53 are mounted in the machine room 50 and cooled by a cooling fan (not shown), and the evaporator 57 is installed in the evaporator chamber 13 located behind the freezing chamber 10. do.

In addition, the cold air flow path means is provided in the upper surface of the trimming section 3 partitioning the freezing compartment 10 and the refrigerating compartment 20 to form a freezing chamber return duct forming a flow path for communicating the freezing compartment 10 with the evaporator chamber 13. 15) and a refrigerating chamber return duct 23 provided at the lower surface of the trimming section 3 to form a flow path for communicating the refrigerating chamber 20 with the evaporator chamber 13, and an evaporator downstream of the evaporator 57. The refrigerating compartment cold air duct 25 forming a flow path for communicating the upper end of the chamber 13 and the refrigerating compartment 20, and the refrigerating compartment (10) for discharging and discharging the cold air supplied from the refrigerating compartment cold air duct 25 to the refrigerating compartment 20. It consists of the refrigerating chamber discharge duct 24 which is installed in both longitudinal ends of the 20.

In addition, the blowing means is installed at the upper end of the evaporator chamber 13 to suck the air in the freezer compartment 10 from the freezer compartment return duct 15, the cold cold air heat exchanged by the evaporator 57 in the evaporator chamber 13 freezer compartment discharge port The freezing chamber fan 17 for circulating the discharge to the freezing chamber 10 through the 19, and the air in the refrigerating chamber 20 from the refrigerating chamber return duct 23, the heat exchange by the evaporator 57 in the evaporator chamber 13 It consists of a refrigerating chamber fan 27 for circulating the discharged cold cold air to the refrigerating chamber 20 through the refrigerating chamber cold air duct (25).

Although not shown, a freezing chamber 10 is provided with a temperature sensor for detecting the temperature of the room, the evaporator 57 is attached to the evaporator 57 temperature sensor for detecting the temperature, the refrigerator compartment 20 There is provided a separate freezer compartment 10 temperature sensor for detecting the temperature of the room, such a temperature sensor provides information to the control means to the refrigeration cycle, freezer compartment fan 17 and the refrigerating compartment fan ( The operation of 27 is controlled.

Here, the refrigerating chamber fan 27 is mounted in the refrigerating chamber 20 separately from the freezing chamber fan 17 according to the characteristics of the present invention and connected to the refrigerating chamber cold air duct 25 while being integral with the inner box 31. Will form.

The bell mouse 30 is formed in a cylindrical shape on the outer side of the refrigerating compartment fan 27 as shown in FIGS. 5 and 6 to generate a discharge pressure structurally when the refrigerating compartment fan 27 is rotated. The semi-cylindrical concave portion 32 of the inner shell 31 of 20 forms a rear portion communicating with the refrigerating chamber cold air duct 25, and is formed in the semi-cylindrical duct cover 35 covered in front of the inner shell 31. The front part is integrally formed by this.

In addition, the recess 32 of the inner box 31 is located at a position corresponding to the lower end of the refrigerating compartment cold air duct 25 extending from the rear of the freezing compartment 10 to the upper end of the refrigerating compartment 20, that is, at the center of the upper end of the rear face of the refrigerating compartment 20. It is formed long in the left and right directions. At this time, the lower end of the refrigerating chamber cold air duct 25 is formed by the duct member 26, the lower end of the duct member 26, the connection hole 33 through which the recessed portion 32 of the inner box 31 is penetrated backward. In communication with

And, the duct cover 35 is formed to form a connection passage 38 in communication with the refrigerating chamber discharge duct 24 located at both ends, the contact portion with the inner wound 31 is a seal ( seal). The duct cover 35 may be fastened to the inner box 31 through a screw or detachably coupled to the inner box 31. For example, the snap fit structure may include a fastener formed at an outer portion of the duct cover 35. 36 may be fastened to the fastening groove 31b of the inner box 31.

The inner surface of the duct cover 35 at the portion facing the recess 32 of the inner box 31 has a heat insulating member 37 having a predetermined thickness so as to prevent the dew point due to the temperature difference between the refrigerating chamber 20 and the cold air flow path. Is preferably covered.

On the other hand, the reverse flow prevention mechanism 40 for preventing the back flow of air generated in the refrigerating chamber 20 is formed on the connection passage (38). The non-return mechanism 40 is installed such that a flat valve plate 41 serving as a check valve is opened and closed by the discharge pressure of the bell mouse 30 in the mounting groove 39 formed on the connection passage 38. Made of structure. That is, in the state where the refrigerating chamber fan 27 is not driven, the valve plate 41 closes the connection passage 38 by its own weight to block the inflow of air from the refrigerating chamber 20, and the refrigerating chamber fan 27 is driven. When it is made to rotate open by the pressure discharged from the bell mouse (30).

In addition, the refrigerating chamber fan 27 is installed at both sides of the center of the bell mouse 30, that is, both sides of the fan motor 28 horizontally and horizontally in front of the concave inlet portion 32 of the inner box 31, respectively. 25) to blow cold air toward the connecting passage (38). At this time, the fan motor 28 is mounted on the inner box 31 through the mounting bracket 29, and the mounting bracket 29 is connected to the fan motor 28 by the reference hole 31a formed in the inner box 31. It is possible to maintain the state in which the inner wound 31 is held in place.

Referring to the operation of the refrigerator in the embodiment of the present invention configured as described above are as follows.

When the temperature of the freezing compartment 10 and the refrigerating compartment 20 detected by each temperature sensor is higher than the set value, the control means drives the freezing cycle and the freezing compartment fan 17 or the refrigerating compartment fan 27.

First, the compressor 51 of the refrigerating cycle converts the gas refrigerant of low temperature and low pressure state into a high temperature and high pressure gas state, and sends it to the condenser 53. Cooled and condensed by external air, the liquid becomes a liquid at a temperature of 40 ° C. and a pressure of 9 atm, and the high pressure and liquid refrigerant are decompressed while passing through an expansion valve 55 that is relatively narrower than the diameter of the other part. . Next, while the refrigerant depressurized by the expansion valve 55 flows into the evaporator 57, the refrigerant in the evaporator chamber 13 absorbs heat while evaporating to a low temperature (-30 ° C.) at a low pressure (0 atm or less).

For example, when the refrigerating chamber fan 27 is driven as the temperature of the refrigerating compartment 20 is detected to be higher than the set value, the bell mouse 30 including the recess 32 and the duct cover 35 of the inner case 31 is Through the refrigerating chamber fan 27 driven from both sides of the fan motor 28 to form a discharge pressure toward the connection passage 38 and a suction force toward the refrigerating chamber cold air duct (25).

Accordingly, the cold cold heat exchanged in the evaporator 57 of the evaporator chamber 13 flows into the refrigerator compartment cold air duct 25 and the strong suction force and strong earth output of the refrigerator compartment fan 27 which act on the bell mouse 30. By this, the discharge is rapidly supplied into the refrigerating chamber 20 through the connection passage 38 and the refrigerating chamber discharge duct 24 without losing pressure. When the temperature of the refrigerator compartment 20 is increased while the refrigerator compartment 20 stays for a predetermined period of time, the refrigeration chamber 20 is introduced into the refrigerator compartment return duct 23 of the trimming section 3 and returned to the evaporator chamber 13 so as to return to the evaporator chamber 13. Heat exchange with the evaporator 57 is repeated.

Meanwhile, as the temperature of the freezer compartment 10 is detected to be higher than the set value, the freezer compartment fan 17 driven is positioned at the rear of the freezer compartment 10 as it is in the conventional two-fan refrigerator, and is located in the evaporator chamber 13. The cold cold air heat exchanged by (57) is discharged and supplied to the freezing compartment (10), and the air of the freezing compartment (10) is sucked back into the evaporator chamber (13) through the freezing chamber return duct (15) to exchange heat with the evaporator (57). Will be repeated.

As described above, the present invention prevents the pressure loss of the cold air discharged into the refrigerating chamber through the cold air circulation flow path from the evaporator located behind the freezer compartment of the freezer compartment because the refrigerator compartment fan is installed in the refrigerating chamber to form a bell mouse integral with the internal wound. It is possible to increase the refrigeration efficiency and to simplify the structure of the bell mouse to reduce the number of parts to reduce the production cost and reduce the waste of the refrigerator.

In addition, in the present invention, since the freezer compartment fan and the refrigerating compartment fan are mounted in different spaces, it is possible to solve the uneven supply of cold air due to the narrowing of the mounting space as the two fans are concentrated in the rear of the freezer compartment. Because it can effectively cope with it will be able to provide a pleasant surroundings.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (4)

By inhaling air in the freezer compartment through a freezer compartment return duct in communication with the freezer compartment, a freezer compartment fan for circulating the cold air exchanged by the evaporator in the evaporator chamber located behind the freezer compartment to the freezer compartment, In the refrigerator provided with each of the refrigerator compartment fan for circulating the discharged cold air heat exchanged by the evaporator to the refrigerating compartment through the refrigerating compartment cold air duct, The refrigerator compartment fan is mounted to the refrigerator compartment separately from the freezer compartment fan to form an internal wound integrated bell mouse connected to the refrigerator compartment cold air duct. The method of claim 1, The bell mouse has a rear portion communicating with the refrigerating chamber cold air duct by a semi-cylindrical recess of the inner portion of the refrigerating chamber, and the front portion is integrally formed by a semi-cylindrical duct cover that covers the front of the inner chamber. Refrigerator. The method of claim 2, The recess of the inner phase is formed at the center of the rear side of the refrigerating compartment, the duct cover is formed of a heat insulating member having a predetermined thickness to form a connection passage communicating with the refrigerating compartment discharge ducts located at both ends, and the refrigerating compartment fan is And refrigerators installed at both ends of the fan motor horizontally installed at the center of the bell mouse to blow cool air from the refrigerating chamber cold air duct to the refrigerating chamber discharge duct through the connection passage. The method of claim 3, wherein And a backflow prevention mechanism is provided on the connection passage to prevent backflow of air generated in the refrigerating compartment.