JP2013029293A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of enhancing its reliability.SOLUTION: The refrigerator includes a circulation duct 22 which is arranged on the wall surface of a storage compartment 3, and has an inlet 28 and an outlet 23 to circulate cold air in the storage compartment 3, a blower 20 arranged below the outlet 23 with its exhaust side directed in a diagonally upward direction, and consisting of an axial fan, and a first protrusion 50 which is projected from the circulation duct 22 to the storage compartment 3 side to cover the upper side of the outflow 23, and has an upper surface 50a of a slope with its fore end sloped downward.

Description

  The present invention relates to a refrigerator provided with a blower in a circulation duct.

  A conventional refrigerator is disclosed in Patent Document 1. In this refrigerator, a cold air duct that branches in the left and right direction and extends in the vertical direction is arranged on the back of the refrigerator compartment for storing stored items. Cold air that has exchanged heat with a cooler that is cooled by driving the compressor flows through the cold air duct and is discharged into the refrigerating room, thereby cooling the refrigerating room.

  A circulation duct extending vertically is provided at the center of the back of the refrigerator compartment. A blower is provided at the bottom of the circulation duct. The circulation duct is provided with an inflow opening facing the blower and opening on the front surface, and an outflow opening opening on the side surface above the blower.

  Deodorizing means for deodorizing the cold air flowing through the circulation duct is disposed in the circulation duct. In addition, an interior illumination lamp is provided in the circulation duct, and an illumination cover made of, for example, a translucent resin that forms the surface of the circulation duct corresponding to the interior illumination lamp is provided.

  The cooler in the refrigerator compartment flows from the inlet to the circulation duct by driving the blower, and after deodorized by the deodorizing means, flows out from the outlet to the refrigerator compartment. Thereby, deodorization in the refrigerator compartment can be performed even when the compressor is stopped.

JP 2000-304410 A

  However, according to the conventional refrigerator, when the humidity in the refrigerator compartment increases due to the opening and closing of the door, the dew condensation water generated on the back wall of the refrigerator compartment flows down and flows into the circulation duct through the outlet. is there. Thereby, there existed a possibility that an air blower might be flooded with condensed water. In particular, when the blower is inclined to improve the blowing efficiency in the circulation duct, the lower end of the blower is likely to be submerged by the condensed water flowing down the back side of the front wall of the circulation duct. For this reason, there existed a problem that the reliability of a refrigerator fell because an air blower broke down.

  An object of this invention is to provide the refrigerator which improves reliability.

  In order to achieve the above object, the present invention provides a circulation duct that is arranged on a wall surface of a storage chamber and has an inlet and an outlet and circulates cool air in the storage chamber, and an exhaust side below the outlet. A blower comprising an axial fan disposed obliquely upward, and a first protrusion having an upper surface of an inclined surface that protrudes from the circulation duct toward the storage chamber and covers the upper side of the outlet and has a tip inclined downward. And a section.

  According to this configuration, the cool air in the storage chamber circulates through the circulation duct by driving the blower. If dew condensation occurs on the front side of the circulation duct when moist outside air enters the storage room, the dew condensation water flows down the front side of the circulation duct. At this time, the dew condensation water that has flowed onto the first projecting portion is dropped from the tip of the first projecting portion along the inclined surface of the upper surface.

  Further, the invention is characterized in that the tip of the inclined surface is bent vertically downward. According to this configuration, the condensed water is dripped vertically downward from the tip of the first protrusion.

  Further, the present invention is characterized in that a second projecting portion having an upper surface projecting from the lower end of the outlet to the circulation duct side and having a tip inclined upward is provided.

  Further, the present invention is characterized in that the circulation duct has a widened portion widened toward the storage chamber facing the blower, and the outlet is provided at an upper end of the widened portion.

  Further, the present invention is characterized in that an ion generator for discharging ions is provided in the circulation duct.

  According to the present invention, since the first projecting portion having the upper surface of the inclined surface that covers the upper part of the outlet opening opened in the circulation duct and has the tip inclined downward, the first projection part is inclined downward of the outlet in the circulation duct. It is possible to improve the reliability of the refrigerator by preventing flooding of the arranged fan.

Side surface sectional drawing which shows the refrigerator of embodiment of this invention The front view which shows the refrigerator compartment of embodiment of this invention AA sectional view of FIG. Detailed view of the main part of FIG. The rear view which shows the refrigerator compartment of embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing the refrigerator of the present embodiment. The refrigerator 1 includes a heat insulating box 2 that forms a main body, and the heat insulating box 2 is provided with a refrigerator compartment 3, a freezer compartment 4, and a vegetable compartment 5 in order from above. The refrigerator compartment 3 and the freezer compartment 4 are partitioned by a heat insulating wall 6, and the freezer compartment 4 and the vegetable compartment 5 are partitioned by a heat insulating wall 7.

  The refrigerator compartment 3 stores stored items in a refrigerator, and the front opening 3a is opened and closed by a pivotable door 3b. The freezer compartment 4 stores stored items in a frozen state, and the front opening 4 a is opened and closed by a drawer-type door 4 b formed integrally with the storage case 8. Guide portions (not shown) that extend back and forth and slide on each other are provided on the outer surfaces of the side walls of the freezer compartment 4 and the storage case 8. The refrigerated storage case 8 is smoothly put in and out with the door 4b by the guide portion. Further, an ice making chamber (not shown) adjacent to the freezing chamber 4 is provided.

  The vegetable room 5 stores stored items refrigerated at a refrigeration temperature higher than that of the refrigerated room 3, and stores vegetables and fruits. The front opening 5a of the vegetable compartment 5 is opened and closed by a drawer-type door 5b formed integrally with the storage case 10. Guide portions (not shown) that extend back and forth and slide on each other are provided on the outside of the side wall of the vegetable compartment 5 and the side wall of the storage case 10. The storage case 10 is smoothly put in and out together with the door 5b by the guide portion.

  A compressor (not shown) is disposed behind the vegetable compartment 5. A condenser, an expander, and a cooler (all not shown) are sequentially connected to the compressor, and a refrigerant such as isobutane is circulated by driving the compressor to constitute a refrigeration cycle.

  The cooler is disposed in a freezer compartment duct (not shown) disposed on the back surface of the freezer compartment 4, and a refrigerating chamber duct 13 (see FIG. 5) communicating with the freezer compartment duct is provided on the back surface of the refrigerating chamber 3. Moreover, the refrigerator compartment 3 and the vegetable compartment 5 are connected via a communication duct (not shown). The cold air generated by the heat exchange with the cooler flows through the freezer compartment duct and the freezer compartment duct 13 and is discharged to the refrigerating compartment 3 and the freezer compartment 4 to cool the refrigerating compartment 3 and the freezer compartment 4. The cold air flowing through the freezer compartment 4 returns to the cooler. The cold air that has circulated through the refrigerator compartment 3 is discharged to the vegetable compartment 5 through the communication duct to cool the vegetable compartment 5. The cold air that has circulated through the vegetable compartment 5 returns to the cooler.

  FIG. 2 is a front view showing the refrigerator compartment 3, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. The refrigerator compartment 3 is provided with a mounting shelf 17, a water tank chamber 19, a chilled chamber 16, and a temperature adjusting unit 15. The mounting shelf 17 mounts stored items and is provided in three stages up and down. A water tank chamber 19 in which a water tank 19a for ice making is arranged is provided at the lower left side of the refrigerator compartment 3. The chilled chamber 16 is provided on the right side of the water tank chamber 19 and is isolated from the upper part of the refrigerator compartment 3. The inside of the chilled chamber 16 is maintained at a lower temperature than the refrigerator compartment 3.

  Above the water tank chamber 19 is provided a temperature adjusting unit 15 that adjusts the room temperature of the refrigerator compartment 3. The temperature adjustment unit 15 has a control circuit, and can adjust the refrigerator compartment 3 to a desired temperature by operating an operation knob 15a integrated with the volume. Around the operation knob, there is provided a display unit for indicating an adjustment value by characters such as “strong”, “medium”, and “weak”. A protrusion or the like provided on the operation knob 15a indicates a character corresponding to the rotation position, and each adjustment value can be visually recognized by reflection of illumination light in the refrigerator compartment 3.

  A circulation duct 22 that circulates the cool air in the refrigerator compartment 3 is disposed at the upper center of the refrigerator compartment 3. The front surface of the circulation duct 22 is covered with a duct panel 27. In front of the upper part of the circulation duct 22, an illumination room 39 provided with an illumination device 41 that illuminates the inside of the refrigerator compartment 3 is provided adjacently.

  FIG. 4 shows a detailed view of the circulation duct 22 portion of FIG. FIG. 5 shows a rear view of the circulation duct 22. The refrigeration chamber duct 13 through which the cool air generated by the cooler circulates is formed to branch left and right and extend in the vertical direction, and the circulation duct 22 is arranged between the refrigeration chamber ducts 13 branched to the left and right. A blower 20 composed of an axial fan is disposed in the lower part of the circulation duct 22 so that the exhaust side is inclined upward.

  Cold air outlets 23 and 24 are opened on the front and upper surfaces of the circulation duct 22, respectively. The circulation duct 22 has a lateral passage 22a (see FIG. 2) extending in the left-right direction on the intake side of the blower 20. The lateral passage 22a is arranged adjacent to the back side of the refrigerator compartment duct 13, and a cold air inlet 28 (see FIG. 2) opens at the left and right ends. The cold air in the refrigerator compartment 3 flows into the circulation duct 22 from the inlet 28 by driving the blower 20, flows upward, and is sent into the refrigerator compartment 3 through the outlets 23 and 24. Thereby, the cold air in the refrigerator compartment 3 can be circulated.

Above the vicinity of the blower 20, an ion generator 21 that emits ions is disposed between the outlet 23 and the blower 20. The ion generator 21 is provided with an electrode (not shown) to which a voltage having an AC waveform or an impulse waveform is applied. When the applied voltage of the electrode is a positive voltage, ions are combined with moisture in the air to generate positive ions mainly composed of H ⁺ (H ₂ O) m. When the applied voltage of the electrode is a negative voltage, the ions are combined with moisture in the air to generate negative ions mainly composed of O ₂ ⁻ (H ₂ O) n. Here, m and n are arbitrary natural numbers. H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n aggregate on the surface of airborne bacteria and odorous components and surround them.

Then, as shown in the formulas (1) to (3), active species [· OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of a microorganism or the like by collision. Destroy airborne bacteria and odorous components. Here, m ′ and n ′ are arbitrary natural numbers. Therefore, it is possible to sterilize the room and remove odors by generating positive ions and negative ions and discharging them from the outlets 23 and 24. At this time, since the moist cold air in the refrigerating chamber 3 flows through the circulation duct 22, it is possible to increase the moisture combined with the ions and reduce the disappearance due to the collision of the ions.

_{^{H + (H 2 O) m}} + O 2 - (H 2 O) n → · OH + 1 / 2O 2 + (m + n) H 2 O ··· (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 · OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

  The front surface of the illumination chamber 39 is covered with a cover made of a resin molded product having translucency. The illumination device 41 installed in the illumination chamber 39 is formed by mounting a light source 40 composed of LEDs on a mounting substrate 36. The back wall 26 of the illumination chamber 39 is formed by a duct panel 27 disposed on the front surface of the circulation duct 22, and an engaging claw 38 is provided on the back wall 26. The engaging claw 38 has an arm portion 38 a that protrudes forward from the back wall 26 and a claw portion 38 b that is bent and protrudes from the tip of the arm portion 38 a, and locks the mounting substrate 36.

  A plurality of communication ports 25 communicating with the circulation duct 22 are opened in the back wall 26 of the illumination chamber 39. The end edge of the communication port 25 is formed so as to coincide with the end surface where the claw portion 38b of the arm portion 38a of the engagement claw 38 is protruded. As a result, when the duct panel 27 is molded, the engaging claw 38 and the communication port 25 can be easily formed by removing the mold in the front-rear direction.

  On the back side of the duct panel 27 (circulation duct 22 side), an umbrella portion 30 that covers the upper side of the communication port 25 is projected.

  The duct panel 27 is widened to the refrigerator compartment 3 side below the outlet 23. That is, the circulation duct 22 has a widened portion 27 a that is widened toward the refrigerator compartment 3 so as to face the blower 20. Thereby, the inclination | tilt angle of the air blower 20 can be enlarged and the pressure loss of the air blower 20 can be made small.

  The duct panel 27 is provided with a first protrusion 50 that protrudes from the circulation duct 22 toward the refrigerator compartment 3 and covers the upper side of the outlet 23. The upper surface 50a of the first protrusion 50 is formed as an inclined surface with the tip inclined downward. Moreover, the front-end | tip part 50b of the 1st protrusion part 50 is bent in the perpendicular downward direction.

  Further, the duct panel 27 is provided with a second projecting portion 51 projecting from the lower end of the outlet 23 toward the circulation duct 22. The upper surface 51a of the second protrusion 51 is formed as an inclined surface with the tip inclined upward.

  In the refrigerator 1 configured as described above, when the blower 20 and the ion generator 21 are driven, ions are included in the cold air flowing into the circulation duct 22 via the inlet 28. Cold air containing ions flows out from the outlets 23 and 24 into the refrigerator compartment 3 as indicated by an arrow K, and the inside of the refrigerator compartment 3 is sterilized and deodorized.

  Condensation may occur on the surface of the duct panel 27, for example, when wet outside air enters the refrigerator compartment 3 by opening and closing the door 3b of the refrigerator compartment 3. At this time, the dew condensation water flowing down the wall surface of the duct panel 27 is prevented from entering the outlet 23 by the first protrusion 50, and flows down the upper surface 50a made of an inclined surface and drops from the tip 50b. Accordingly, the flooding of the blower 20 can be prevented.

  Moreover, since the 2nd protrusion part 51 is provided in the duct panel 27, even if condensed water penetrate | invades from the outflow port 23, it will be discharged | emitted along the upper surface 51a which consists of an inclined surface.

  According to the present embodiment, the blower 20 composed of an axial fan is arranged below the outlet 23 with the exhaust side obliquely upward, and projects from the circulation duct 22 toward the refrigerator compartment 3 so as to cover the upper side of the outlet 23. In addition, the upper surface 50a includes a first protrusion 50 formed on an inclined surface with the tip inclined downward. Thereby, the first protrusion 50 can prevent the blower 20 from being flooded by the condensed water generated on the surface of the duct panel 27.

  Moreover, since the front-end | tip part 50b of the 1st protrusion part 50 is bent below vertically, the dew condensation water which propagates the upper surface 50a can be dripped reliably in the refrigerator compartment 3. FIG.

  Moreover, since the 2nd protrusion part 51 which protrudes in the circulation duct 22 side from the lower end of the outflow port 23 and the upper surface inclines the front-end | tip upward is provided, the flooding of the air blower 20 can be prevented more reliably.

  Moreover, since the circulation duct 22 has the widening part 27a widened to the refrigerator compartment 3 side facing the air blower 20, and the outflow port 23 is provided in the upper end of the widening part 27a, arrange | position the inclination angle of the air blower 20 large. And the pressure loss of the blast can be reduced.

  Moreover, since the ion generator 21 which generate | occur | produces ion in the circulation duct 22 was provided, the disinfection in the refrigerator compartment 3 and an odor removal can be performed.

  In the present embodiment, the ion generator 21 disposed in the circulation duct 22 may be omitted. Thereby, the temperature in the refrigerator 1 can be equalized by driving the blower 20.

  According to this invention, it can utilize for the refrigerator provided with the air blower in the circulation duct.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 3 Refrigerated room (storage room)
4 Freezer Room 5 Vegetable Room 10 Storage Case 20 Blower 21 Ion Generator 22 Circulating Duct 23 Outlet 24 Outlet 25 Communication Port 26 Back Wall 28 Inlet 30 Umbrella Part 36 Mounting Board 37 Cover 38 Engaging Claw 38a Claw Part 38b Arm Part 39 Illuminating chamber 40 Light source 41 Illuminating device 50 First protrusion 50a Upper surface 50b Tip 51 Second protrusion 51a Upper surface K Arrow (air blowing direction)

Claims (5)

A circulation duct that is arranged on the wall surface of the storage chamber and has an inlet and an outlet and circulates cool air in the storage chamber;
A blower comprising an axial fan disposed below the outlet and with the exhaust side obliquely upward;
A first protrusion having an upper surface of an inclined surface that protrudes from the circulation duct toward the storage chamber and covers the upper side of the outflow port and has a tip inclined downward;
A refrigerator characterized by comprising.   The refrigerator according to claim 1, wherein a tip of the inclined surface is bent vertically downward.   3. The refrigerator according to claim 1, further comprising a second projecting portion that protrudes from a lower end of the outflow port toward the circulation duct and has an upper surface with a tip inclined upward. 4.   The said circulation duct has a widening part widened to the said storage room side facing the said air blower, and the said outflow port is provided in the upper end of the said widening part, The any one of Claims 1-3 characterized by the above-mentioned. Refrigerator.   The refrigerator according to any one of claims 1 to 4, further comprising an ion generator that discharges ions into the circulation duct.

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