JP5227774B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator provided with an ion generator that generates ions.

  A conventional refrigerator is disclosed in Patent Document 1. This refrigerator has a cooler at the bottom and a refrigerator compartment at the top. A blower is provided in the vicinity of the cooler. A cold air passage through which the cold air is guided from the cooler by driving the blower is disposed on the back of the refrigerator compartment. The cold air passage is bent along the periphery of the refrigerator compartment and is provided at the left end portion, the upper end portion and the right end portion of the refrigerator compartment, and a plurality of discharge ports are opened. A return opening is provided in the lower part of the refrigerator compartment, and a return passage extending downward from the return opening to return the cool air to the cooler is provided.

  When the blower is driven, the cold air generated by the cooler is guided upward from the lower part of the refrigerator and flows through the cold air passage. The cold air flowing through the cold air passage is discharged from a discharge port arranged in the peripheral part of the refrigerator compartment. The cold air discharged from the discharge port flows through the refrigerator compartment, flows into the return passage from the return port, and returns to the cooler. Thereby, the refrigerator compartment is cooled.

  An electrode of the ion generator is supported by a support member in the upper end portion of the cold air passage, and is disposed so as to protrude into the passage. The main body of the ion generator is disposed below the cold air passage, and negative ions are generated from the electrodes by driving the main body. The cold air flowing through the cold air passage contains negative ions and is discharged from the discharge port at the left end portion on the downstream side of the ion generator. Thereby, a negative ion can distribute | circulate in a refrigerator compartment and food odor can be reduced.

Japanese Unexamined Patent Publication No. 2003-14365 (pages 4-7, FIG. 2)

  However, according to the conventional refrigerator, since the discharge outlet for discharging ions is arranged to the left of the refrigerator compartment, there is a problem that the distribution of ions supplied into the refrigerator compartment becomes uneven. Further, the cool air flowing in the vicinity of the electrode contains a large amount of ions, and the ions contained in the cold air flowing away from the electrode are reduced. For this reason, ions are dispersed and included in the cold air discharged from the discharge port, and the distribution of ions in the refrigerator compartment is further non-uniform.

  An object of this invention is to provide the refrigerator which can supply ion uniformly in a storage chamber.

  In order to achieve the above object, the present invention includes a storage chamber for storing a stored item, a cooler for generating cold air, and a cold air passage provided on the back of the storage chamber through which the cold air generated by the cooler flows. A discharge port for discharging cool air flowing through the cold air passage to the storage chamber, a first ion generating unit for releasing negative ions into the cold air passage, and positive ions. An ion generating device having a second ion generating unit, wherein the cold air passage has a shielding portion that blocks a part of the air flow and branches left and right to guide the cold air to the discharge port, and the ion generating device includes: It arrange | positions in the vicinity of the said shielding part, and has arrange | positioned the 1st ion generation part away from the said shielding part rather than the 2nd ion generation part, It is characterized by the above-mentioned.

  According to this configuration, the cool air generated by the cooler flows through the cool air passage, and the ion generator discharges negative ions from the first ion generating portion into the cool air passage and releases positive ions from the second ion generating portion. . The ion generator is arranged in the vicinity of the shielding part, and the first ion generating part is arranged farther from the shielding part than the second ion generating part. The cold air collides with the shielding part to generate a vortex, and the ions are stirred and contained in the cold air. Cold air containing ions branches left and right by the shielding portion, is guided to the discharge port, and is discharged into the storage chamber.

  In the refrigerator having the above-described configuration, the cool air passage has a central portion in which cold air rises and an upper wall of the cold air passage is disposed below the left portion and the right portion, and the shielding portion includes It consists of the said center part, and has arrange | positioned the said discharge outlet along the said left part and the said right part.

  According to this configuration, the cold air generated by the cooler rises in the cold air passage and collides with the shielding portion formed at the central portion of the upper wall of the cold air passage, so that ions are stirred and included. Cold air containing ions branches left and right by the central portion of the upper wall, and is guided to discharge ports disposed along the left and right portions of the upper wall disposed above the central portion.

  In the refrigerator configured as described above, the cold air passage may include an ion generation chamber in which the ion generation device is installed on the storage chamber side, and the back surface of the ion generation chamber is in the first and second ion generation units. The discharge port is disposed forward of the rear surface of the ion generation chamber. The discharge port has an opening that faces each other and an upper portion that is inclined forward. According to this configuration, the cold air flowing through the cold air passage contains ions through the opening provided in the inclined surface on the back surface of the ion generation chamber, and is guided to the right and left front discharge ports by the inclined surface.

  According to the present invention, in the refrigerator configured as described above, a guide portion that guides cold air in a direction toward the ion generation chamber upstream of the ion generation chamber and narrows the flow path is provided on a wall surface of the cold air passage facing the ion generation chamber. It is characterized by providing. According to this configuration, the cold air flowing through the cold air passage is speeded up by the guide portion provided on the wall surface facing the ion generation chamber so that the flow rate is reduced, and the ions are contained in the direction of the ion generation chamber.

  Moreover, the present invention is characterized in that in the refrigerator configured as described above, a member made of a good thermal conductor covering the back surface of the storage chamber is provided below the discharge port. According to this configuration, the cold air flowing through the cold air passage and the cold air discharged from the discharge port are transmitted to the member and released into the storage chamber. Further, moisture contained in the outside air that flows in when the door is opened condenses on the member, evaporates in the storage chamber, and the storage chamber is moisturized.

  According to the present invention, since the cold air passage is provided with the shielding part that blocks part of the air flow, branches to the left and right, and leads to the discharge port, and the ion generator is disposed in the vicinity of the shielding part, the air current that collides with the shielding part is stirred. Thus, the cold air contains ions uniformly, and the cold air containing ions is discharged from the right and left discharge ports of the storage chamber. Therefore, ions can be supplied uniformly into the storage chamber.

  In addition, since the first ion generating unit that emits negative ions is arranged farther from the shielding unit than the second ion generating unit that generates positive ions, positive ions and negative ions are generated in the cold air discharged from the left and right discharge ports. Can be included uniformly. Therefore, ions can be supplied more uniformly into the storage chamber.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are an external perspective view showing a refrigerator according to an embodiment and a perspective view seen from the front in a state where a door is opened. In the refrigerator 1, a refrigerator compartment 6 is arranged at the upper part, and freezer compartments 8 and 9 are arranged below through a heat insulating wall 10. The freezer compartments 8 and 9 arranged on the left and right are partitioned by a vertical heat insulating wall 11. The refrigerator compartment 6 is opened and closed by the right door 2 and the left door 3, and the freezer compartments 8 and 9 are opened and closed by the right door 4 and the left door 5, respectively.

  Door pockets 2a and 3a for storing stored items are provided on the inner surfaces of the right door 2 and the left door 3 of the refrigerator compartment 6, respectively. In the refrigerator compartment 6, a plurality of placement shelves 12 on which stored items are placed are arranged. In the lower part of the refrigerator compartment 6, an isolation chamber 7 partitioned by a partition plate 13 is provided. A plurality of drawer-type storage cases 7 a for storing stored items are provided in the isolation chamber 7.

  An ice making device 8a is provided in the upper part of the right freezer compartment 8. An ice storage box 8b for storing ice is disposed below the ice making device 8a. A plurality of storage cases 8c for storing stored items are provided at the sides and below the ice making device 8a and the ice storage box 8b. Similarly, a plurality of storage cases 9 c are provided in the left freezer compartment 9.

  FIG. 3 is a side cross-sectional view showing a cross section passing through the freezer compartment 8 at the bottom of the refrigerator 1. A back duct 56 covered with a back plate 55 is formed between the heat insulating box 1 a forming the main body of the refrigerator 1 and the inside of the freezer compartment 8. The inside of the back duct 56 is divided into front and rear by a partition plate 56a, a plurality of back discharge ports 63 are opened on the front surface, and a cooler 57 is arranged on the rear side. A blower 58 is disposed above the cooler 57. The cooler 57 is connected to a compressor 59 disposed behind the freezer compartments 8 and 9. The refrigerant flows by driving the compressor 59 and the refrigeration cycle is operated, and the cooler 57 is on the low temperature side of the refrigeration cycle.

  The vertical heat insulating wall 11 is disposed in contact with the back plate 55 and is provided with first and second cold air ducts 71 and 73 communicating with the back duct 56. A bottom duct 75 communicating with the first cold air duct 71 is provided at the bottom of the freezer compartments 8 and 9. The bottom duct 75 is provided with a cold air return port 72 on the front surface, the back surface, and the side surface on the side away from the vertical heat insulating wall 11.

  Side discharge ports 74 that open toward the left and right freezer compartments 8 and 9 are provided at the front of the second cold air duct 73. In addition, the damper 65 provided in the heat insulation wall 10 is opened, and cold air is sent out to the cold air passage 27 (see FIG. 5) provided in the back surface of the refrigerator compartment 6.

  FIG. 4 shows a perspective view of the panel assembly 14 forming the back surface of the refrigerator compartment 6 as viewed from the front. 5 and 6 show a rear view and a side sectional view of the panel assembly 14. FIG. 7 is a detailed view of the main part of FIG. The panel assembly 14 is disposed above the isolation chamber 7 and forms a cool air passage 27 through which cool air flows on the back side.

  The panel assembly 14 includes a panel 15 made of a resin molded product, and a member 18 made of a good heat conductor such as metal (aluminum or stainless steel) is disposed on the front side of the panel 15. On both sides of the member 18, lamp covers 16 and 17 made of translucent resin are provided.

  An illumination chamber 20 a is formed integrally with the panel 15 at the center in the left-right direction at the top of the panel 15. Discharge ports 15a and 15b for discharging cool air are opened on the left and right of the illumination chamber 20a. The illumination device 20 is screwed into the illumination chamber 20a from the back. A cover 19 is provided above the illumination chamber 20a. A similar illumination device having LEDs is also arranged behind the lamp covers 16 and 17.

  A duct 28 formed of a foam heat insulating material is disposed on the back surface of the panel 15. The panel 15 is provided with an opening in which the member 18 is attached, and a duct 28 is provided in contact with the member 18. Around the duct 28, a frame member 28g that abuts against the heat insulating box 1a (see FIG. 3) is provided, and the outer shape of the cold air passage 27 is formed by the frame member 28g. The cold air passage 27 communicates with the damper 65 (see FIG. 3). The cold air generated by the cooler 57 due to the opening of the damper 65 circulates in the cold air passage 27 from below to above and is discharged into the refrigerator compartment 6 from the discharge ports 15a and 15b.

  The cold air passage 27 is divided into three in the left-right direction by ribs 32 projecting from the rear surface of the duct 28, and the right passage 29, the middle passage 30, and the left passage 31 are arranged in order from the right (from the left in the rear view of FIG. 5). Provided. The right passage 29, the middle passage 30, and the left passage 31 merge at the top.

  The end of the cold air passage 27 is formed by the upper wall 28c of the duct 28 formed by the upper end portion of the frame member 28g. The upper wall 28c of the duct 28 has a central portion 28f disposed below the right portion 28d and the left portion 28e. An illumination chamber 20a is formed above the central portion 28f, and discharge ports 15a and 15b are formed along the right portion 28d and the left portion 28e.

  As a result, the cool air rising in the middle passage 30 collides with the central portion 28f of the upper wall 28c, branches right and left, and is guided to the discharge ports 15a and 15b. Accordingly, the central portion 28f constitutes a shielding portion that blocks a part of the airflow in the cold air passage 27 and branches left and right.

  Further, an ion generation chamber 28a in which an ion generator 86 is disposed is formed integrally with the duct 28 in the vicinity of the central portion 28f. The back surface of the ion generation chamber 28a is composed of an inclined surface 28k whose upper portion is inclined forward over the left and right sides of the cold air passage 27. Further, the discharge ports 15a and 15b are disposed in front of the inclined surface 28k. Thereby, the cold air flowing through the cold air passage 27 is smoothly guided to the discharge ports 15a and 15b along the inclined surface 28k.

  The heat insulating box 1a facing the ion generation chamber 28a is formed with a guide portion 27a made of an inclined surface that guides cold air toward the ion generation chamber 28a on the upstream side of the ion generation chamber 28a. The flow path of the cool air guided to the ion generation chamber 28a by the guide portion 27a is narrowed, and the flow rate of the cool air in the vicinity of the ion generation chamber 28a is increased. Thereby, cold air can be circulated in the vicinity of the ion generation chamber 28a to contain ions. In addition, there is a limit to the amount of ions that can be contained per unit flow rate. For this reason, the ions generated by the ion generator 86 can be sufficiently contained in the cold air without being saturated by the speed increase of the cold air, and can be diffused and guided to the discharge ports 15a and 15b.

  8 and 9 show an exploded perspective view and a plan view of the lighting device 20. The lighting device 20 includes a base 21, a light guide plate 22, a substrate 23, and a reflection sheet 24. The base 21 is made of a resin molded product, and a storage portion 21a for storing the substrate 23 is formed at one end. The light guide plate 22 is made of a transparent resin, and has an emission surface 22c on the front surface and an inclined surface 22b on the back surface side.

  Light emitted from the LED 23a mounted on the substrate 23 is guided through the light guide plate 22, reflected by the inclined surface 22b, and guided to the output surface 22c. The inside of the refrigerator compartment 6 is illuminated by the outgoing light from the outgoing surface 22c. In order to obtain a wide area facing the LED 23a, the light guide plate 22 is formed with a recess 22a into which the tip of the LED 23a is inserted. The reflection sheet 24 is made of an aluminum foil bonded to the light guide plate 22 with a transparent adhesive material, reflects light leaking upward, and guides it to the emission surface 22c.

  10, 11, and 12 show a top view, a side view, and a front view of the substrate 23. The LED 23a is mounted on one surface of the substrate 23, and the connector 23c is mounted on the same surface. A thermistor 23b is mounted on the surface of the substrate 23 opposite to the LED 23a. A lead wire 25 (see FIG. 8) is connected to the connector 23c via a connector 25a (see FIG. 8), and power is supplied to the LED 23a and the thermistor 23b.

  A part of the storage portion 21a is opened and communicates with the inside of the refrigerator compartment 6, and the cold air in the refrigerator compartment 6 flows in and the temperature is detected by the thermistor 23b. Based on the detection result of the thermistor 23b, the damper 65 (see FIG. 3) is opened and closed to control the temperature in the refrigerator compartment 6. Further, since the storage portion 21a is disposed in the vicinity of the right discharge port 15a, the temperature of the cool air discharged from the discharge port 15a also affects the thermistor 23b and temperature control is performed. A part of the cold air discharged from the discharge port 15a may be drawn into the storage portion 21a to help control the temperature of the refrigerator compartment 6.

  The thermistor 23b is attached below the LED 23a, and is attached to the surface opposite to the LED 23a. As a result, it is possible to prevent a decrease in detection accuracy due to heat generated by the LED 23a, and it is possible to improve volumetric efficiency by performing interior lighting and temperature control with a small volume.

  FIG. 13 is a front sectional view of the lighting device 20. FIG. 14 is an enlarged view of a main part of FIG. The board | substrate 23 is inserted from the upper surface opening part of the accommodating part 21a, and is pinched | interposed and fixed by the ribs 21b and 21c provided in the accommodating part 21a. At this time, the connector 23c protruding from the board 23 passes between the protruding portion 21d protruding sideways from the lower surface of the base 21 and the inner wall of the storage portion 21a facing the protruding portion 21d. And the board | substrate 23 is guided to the left in the figure by the inclined surface formed in the upper surface of the rib 21b, and the board | substrate 23 is fixed between rib 21b, 21c.

  Thereby, the board | substrate 23 moves to the direction of the light-guide plate 22, and the front-end | tip of LED23a enters into the recessed part 22a (refer FIG. 9) of the light-guide plate 22. FIG. For this reason, LED23a can transmit the light which approaches the recessed part 22a to the light-guide plate 22 without leaking. Moreover, the light guide plate 22 side below the storage portion 21a is opened and the tip of the connector 23c is arranged. As a result, the connectors 23c and 25a can be easily connected, and an excessive stress can be prevented from being applied to the lead wire 25 (see FIG. 4). Note that the substrate 23 may be incorporated in the storage portion 21a after the connectors 23c and 25a are connected.

  Further, an insulating sponge-like spacer may be inserted between the substrate 23 and the inner surface of the storage portion 21a. Thereby, the backlash of the board | substrate 23 can be prevented and the space | interval of LED23a and the light-guide plate 22 can be stably maintained at a predetermined space | interval.

  15 and 16 show a front view and a side sectional view of the ion generator 86. The ion generator 86 is covered with a housing 86a made of an insulator, and needle-like discharge electrodes 86p and 86q are arranged apart from each other. An annular induction electrode 86e is disposed around the discharge electrodes 86p and 86q.

  In the ion generation chamber 28a (see FIG. 5), the discharge electrodes 86p and 86q are arranged in the vertical direction, the discharge electrode 86p is arranged upward, and the discharge electrode 86q is arranged downward. In other words, the ion generator 86j having the discharge electrode 86q (see FIG. 15: the first ion generator) is farther from the central portion 28f serving as a shield than the ion generator 86k (second ion generator) having the discharge electrode 86q. Arranged.

  The housing 86a is provided with a through hole 86b facing the discharge electrodes 86p and 86q. Thereby, the discharge electrodes 86p and 86q are exposed on the ion generation surface 86d. The through hole 86b faces the opening 28b (see FIG. 5) that opens facing the cold air passage 27 of the ion generation chamber 28a. Thereby, the discharge electrodes 86p and 86q are arranged facing the cold air passage 27.

  Ions generated in the ion generation portions 86j and 86k between the discharge electrodes 86p and 86q and the induction electrode 86e are mixed with the cold air flowing into the ion generation chamber 28a and flow out into the cold air passage 27 from the opening 28b.

  A vent hole 86g having a filter 86h is formed between the through holes 86b on the ion generation surface 86d. The air hole 86g communicates with the ion generator 86d inside the housing 86a. When the ion generation surface 86d is arranged away from the back surface of the ion generation chamber 28a, the cold air that has flowed into the housing 86a from the vent hole 86g flows out from the ion generation portion 86d. For this reason, the ion which generate | occur | produced in the ion generation parts 86j and 86k can be included in cold air, without stagnating.

  The filter 86h isolates the left and right ion generators 86j and 86k, thereby reducing the disappearance due to the collision between positive ions and negative ions and improving the ion supply efficiency. You may provide the rib which isolates both between the ion generating parts 86j and 86k on either side.

  A positive or negative high voltage is applied to the discharge electrodes 86p and 86q with respect to the induction electrode 86e. As a result, positive ions are generated, for example, by corona discharge in the ion generator 86j (second ion generator) formed between the discharge electrode 86p and the induction electrode 86e disposed above. Further, negative ions are generated, for example, by corona discharge in an ion generation part 86k (first ion generation part) formed between the discharge electrode 86q and the induction electrode 86e disposed below.

A positive voltage is applied to one discharge electrode 86p, and ions generated by ionization combine with moisture in the air to generate positive cluster ions whose charges mainly consist of H ⁺ (H ₂ O) m. A negative voltage is applied to the other discharge electrode 86q, and ions generated by ionization combine with moisture in the air to generate negative cluster 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 agglomerate and surround the surface of airborne bacteria, odorous components, and stored bacteria.

Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of the microorganism or the like by collision. Destroy airborne bacteria and odor components. Here, m ′ and n ′ are arbitrary natural numbers. Therefore, indoor sterilization and odor removal can be performed by generating positive ions and negative ions and discharging them from the discharge ports 15a and 15b.

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 ion generator 86 includes needle-like discharge electrodes 86p and 86q and an induction electrode 86e, but may have other configurations. For example, as shown in FIG. 17, an ion generating device in which planar discharge electrodes 86p and 86q (86q is not shown) may be arranged on the ion generating surface 86d. Moreover, as shown in FIG. 18, the ion generator which has the acicular discharge electrodes 86p and 86q (86q is not shown) connected to the power supply part 86j by the lead wire 86k may be sufficient. The discharge electrode 86p constitutes a first ion generator that generates negative ions, and the discharge electrode 86p constitutes a second ion generator that generates positive ions.

  In the refrigerator 1 having the above-described configuration, the cold air generated by heat exchange in the cooler 57 is guided to the front side of the rear duct 56 by driving the blower 58 and dispersed vertically from the plurality of rear discharge ports 63 provided in the rear plate 55. Then, it is discharged into the freezer compartments 8 and 9. The cool air discharged from the rear discharge port 63 is guided forward and flows around the storage cases 8c and 9c.

  Further, the cold air flowing through the second cold air duct 23 from the front side of the rear duct 56 is dispersed vertically from the plurality of side surface discharge ports 74 and discharged into the freezer compartments 8 and 9. The cool air discharged from the side discharge port 74 is guided in a direction away from the vertical heat insulating wall 11 and circulates around the storage cases 8c and 9c. The cold air flowing through the freezer compartments 8 and 9 flows into the bottom duct 75 through the cold air return port 72 and returns to the cooler 57 through the first cold air duct 71. Thereby, the inside of the freezer compartments 8 and 9 is cooled.

  When the damper 65 provided on the heat insulating wall 10 is opened, cold air is sent out to the cold air passage 27 provided on the back surface of the refrigerator compartment 6. The cold air passage 27 is formed across the left and right sides of the refrigerator compartment 6, and the passage is widened from the damper 65 to the left and right. As a result, the flow area of the cold air passage 27 is widened, so the flow rate of the cold air is reduced.

  The cold air flowing into the cold air passage 27 is dispersed and rises in the right passage 29, the middle passage 30, and the left passage 31. Ions generated by the ion generator 86 flow out of the ion generation chamber 28 a through the opening 28 b and are mainly included in the cold air that has passed through the middle passage 30. The cool air rising through the middle passage 30 is blocked by colliding with the central portion 28f of the upper wall 28c of the duct 28, and a vortex is generated and stirred.

  As a result, the ions are stirred by the vortex and are uniformly contained in the cold air. At this time, negative ions are released from the upstream side of the two openings 86b and positive ions are released from the downstream side. For this reason, positive ions are continuously released from one of the openings 86b and negative ions are continuously released from the other. As a result, the amount of ions generated is increased and the influence of the decrease due to the collision can be reduced as compared with the case where positive and negative ions are alternately generated by one discharge electrode.

  Further, the vicinity of the ion generator 86 in the middle passage 30 is guided by the guide portion 27a having an inclined surface so that the cold air is directed toward the ion generation chamber 28a. As a result, the cold air flows into the ion generation chamber 28a and flows out including the ions, so that the ions generated by the ion generator 86 easily flow out into the cold air passage 27.

  The cold air containing ions branches right and left by the central portion 28f of the upper wall 28c, is led to the discharge ports 15a and 15b, merges with the cold air that has passed through the right passage 29 and the left passage 31, and is discharged into the refrigerator compartment 6. Is done. The cool air discharged from the discharge ports 15a and 15b arranged in the upper part of the refrigerating chamber 6 flows down in the refrigerating chamber 6 to cool the stored items, and the inside of the refrigerating chamber 6 is sterilized by ions contained in the cold air.

  Further, the cold heat of the cold air flowing through the cold air passage 27 is transmitted to the member 18 through the duct 28. In addition, the cold air flowing down from the discharge ports 15 a and 15 b is transmitted to the member 18. Since the member 18 covering the back surface of the refrigerator compartment 6 is made of a good heat conductor, cold heat is released from the entire member 18. Thereby, the temperature distribution in the refrigerator compartment 6 can be made uniform. In order to increase the strength of the panel assembly 14, a wall surface of the panel 15 may be provided between the member 18 and the duct 28. Further, the amount of cold heat may be adjusted by adjusting the thickness of the duct 28 or the panel 15, and in some cases, the air may be opened to directly contact the member 18.

  Further, when the right door 2 or the left door 3 of the refrigerator compartment 6 is opened, outside air flows into the refrigerator compartment 6, and moisture contained in the outside air comes into contact with the member 18 to condense. Condensation of the member 18 evaporates after the right door 2 and the left door 3 are closed, and the inside of the refrigerator compartment 6 is moisturized. For this reason, while being able to reduce the drying of a store thing, the cluster ion couple | bonded with the water molecule can be enlarged. Thereby, since it becomes difficult to lose | disappear ion, ion can be conveyed to every corner of the refrigerator compartment 6. FIG.

  According to the present embodiment, a central portion 28f (shielding portion) that blocks a part of the airflow and branches right and left and leads to the discharge ports 15a and 15b is provided in the cold air passage 27, and the ion generator 86 is located in the vicinity of the central portion 28f. Since the airflow colliding with the central portion 28f is stirred, ions are uniformly contained in the cold air, and cold air containing ions is discharged from the left and right discharge ports 15a, 15b of the refrigerator compartment 6. Therefore, ions can be uniformly supplied into the refrigerator compartment 6.

  Further, the ion generator 86k (first ion generator) that emits negative ions is arranged farther from the central portion 28f than the ion generator 86j (second ion generator) that releases positive ions.

  Table 1 shows the amount of negative ions discharged from the left discharge port 15b and the right discharge port 15a when the discharge electrode 86q is disposed below (upstream) and above (downstream) the discharge electrode 86p. The result of examining the amount of positive ions is shown. In the table, the ion balance indicates the ratio of the larger negative ion amount and the smaller positive ion amount.

  According to Table 1, when the discharge electrode 86q generating negative ions is arranged upstream, the ions discharged from the left and right discharge ports 15a and 15b are more than when the discharge electrode 86p generating positive ions is arranged upstream. The ion balance is close to 1. Therefore, positive ions and negative ions can be uniformly contained in the cold air, and ions can be supplied more uniformly into the refrigerator compartment 6.

  Further, the central portion 28f of the upper wall 28c of the cold air passage 27 is disposed below the left portion 28e and the right portion 28d, and the discharge ports 15a and 15b are arranged along the left portion 28e and the right portion 28d. The portion 28f can easily realize a shielding portion that stirs the airflow, and can easily branch the cold air to the left and right discharge ports 15a and 15b.

  In addition, the back surface of the ion generation chamber 28a has an opening 28b facing the ion generation portions 86j and 86k, and the upper portion is composed of an inclined surface 28k inclined forward. The discharge ports 15a and 15b are formed from the back surface of the ion generation chamber 28a. Is also placed forward. Thereby, the cold air containing the ion discharge | released from the opening part 28b can be smoothly guide | induced to the discharge outlets 15a and 15b along the inclined surface 28k.

  In addition, since the guide portion 27a that guides the cold air toward the ion generation chamber 28a and narrows the flow path is provided on the wall surface facing the ion generation chamber 28a, the cold air is circulated in the vicinity of the ion generation chamber 28a to include ions. be able to. Further, the flow velocity of the cold air in the vicinity of the ion generation chamber 28a is increased, and the ions generated by the ion generator 86 can be sufficiently contained in the cold air without being saturated.

  Further, since the member 18 made of a good thermal conductor covering the back of the refrigerator compartment 6 is provided below the discharge ports 15a and 15b, the cold heat of the cold air flowing from the discharge ports 15a and 15b is transmitted to the member 18. Thereby, cold heat is discharged | emitted from the whole member 18, and the temperature of the refrigerator compartment 6 can be made uniform. Further, since the dew condensation is performed by the member 18 when the outside air flows in and the moisture is retained, the cluster ions combined with the water molecules can be enlarged and conveyed to every corner of the refrigerator compartment 6.

  INDUSTRIAL APPLICATION This invention can be utilized for the refrigerator provided with the ion generator which generate | occur | produces ion.

The external appearance perspective view which shows the refrigerator of embodiment of this invention The perspective view which shows the state which opened the door of the refrigerator of embodiment of this invention Side surface sectional drawing which shows the lower part of the refrigerator of embodiment of this invention The perspective view which shows the panel assembly of the refrigerator of embodiment of this invention The rear view which shows the panel assembly of the refrigerator of embodiment of this invention Side surface sectional drawing which shows the panel assembly of the refrigerator of embodiment of this invention Detailed view of the main part of FIG. The disassembled perspective view which shows the illuminating device of the refrigerator of embodiment of this invention. The top view which shows the illuminating device of the refrigerator of embodiment of this invention The top view which shows the board | substrate of the illuminating device of the refrigerator of embodiment of this invention. The side view which shows the board | substrate of the illuminating device of the refrigerator of embodiment of this invention. The front view which shows the board | substrate of the illuminating device of the refrigerator of embodiment of this invention. Front sectional drawing which shows the illuminating device of the refrigerator of embodiment of this invention. Detailed view of the main part of FIG. The front view which shows the ion generator of the refrigerator of embodiment of this invention Side surface sectional drawing which shows the ion generator of the refrigerator of embodiment of this invention The perspective view which shows the other ion generator of the refrigerator of embodiment of this invention. The perspective view which shows the other ion generator of the refrigerator of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 1a Heat insulation box 6 Refrigerating room 7 Isolation room 8, 9 Freezing room 10 Heat insulation wall 11 Vertical heat insulation wall 14 Panel assembly 15 Panel 15a, 15b Discharge port 18 Member 20 Lighting apparatus 20a Lighting room 21 Base 21a Storage part 22 Conduction Light plate 23 Substrate 23a LED
23b Thermistor 27 Cold air passage 27a Guide part 28 Duct 28a Ion generation chamber 28b Opening part 28c Upper wall 28f Center part (shielding part)
29 Right passage 30 Middle passage 31 Left passage 55 Back plate 56 Rear duct 57 Cooler 58 Blower 59 Compressor 63 Rear discharge port 65 Damper 71 First cold air duct 72 Cold air return port 73 Second cold air duct 74 Side discharge port 75 Bottom duct 86 Ion generator 86a Housing 86b Through hole 86d Ion generation surface 86e Dielectric electrode 86g Vent hole 86h Filter 86j, 86k Ion generator 86p, 86q Discharge electrode

Claims (5)

A storage chamber for storing stored items, a cooler for generating cold air, a cool air passage provided at the back of the storage chamber through which the cool air generated by the cooler flows, and a left and right ends of the storage chamber, respectively. And a discharge port for discharging the cold air flowing through the cold air passage to the storage chamber, an ion generator having a first ion generator for releasing negative ions and a second ion generator for releasing positive ions in the cold air passage. A refrigerator that discharges cold air containing positive ions and negative ions from the discharge port, the cold air passage having a shielding part that blocks a part of the air flow and branches left and right to guide the cold air to the discharge port together with the said ion generator is disposed in the vicinity of the shielding portion, disposed a first ion generating unit on the upstream side of the airflow away from the shielding portion than the second ion generator Refrigerator and features.   The cool air passage has a central portion in which the cool air rises and the upper wall of the cold air passage is disposed below the left and right portions, the shielding portion is formed of the central portion, and the discharge port The refrigerator according to claim 1, wherein the refrigerator is disposed along the left part and the right part.   The cold air passage includes an ion generation chamber in which the ion generation device is installed on the storage chamber side, the back surface of the ion generation chamber has openings facing the first and second ion generation units, and the upper portion is forward. 3. The refrigerator according to claim 1, wherein the refrigerator is configured by an inclined surface, and the discharge port is disposed in front of a back surface of the ion generation chamber.   The guide part which guides cold air in the direction of the said ion generation chamber upstream of the said ion generation chamber, and restrict | squeezes a flow path was provided in the wall surface facing the said ion generation chamber of the said cold passage. The refrigerator described.   The refrigerator according to any one of claims 1 to 4, wherein a member made of a good thermal conductor covering the back surface of the storage chamber is provided below the discharge port.

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