JP2019173988A - refrigerator - Google Patents

Abstract

To enable a ventilation plate to be widely open without interfering with a ceiling surface and a hanging wall in a refrigerator including a machine room at an uppermost part and including the ventilation plate which is formed at a front panel defining the machine room in a manner that the ventilation plate can rotationally oscillate.SOLUTION: A front panel 17 defining a front surface of a machine room 20 includes: a front surface wall 30 having a vent hole 36; and an upper flange wall 37a which is formed along an upper opening edge of the vent hole 36 while protruding rearward. A hinge mechanism 50 of a ventilation plate 40 which opens or closes the vent hole 36 includes: first and second hinge plates 52, 53 having a bearing cylinder 51; and a hinge pin 54 which is inserted and fitted into the bearing cylinder 51 of the hinge plates 52, 53. The first hinge plate 52 is fixed to a lower surface of the upper flange wall 37a of the front panel 17, the second hinge plate 53 is fixed to an upper surface of an upper wall 43a of the ventilation plate 40, and the hinge pin 54 is disposed between the upper flange wall 37a and the upper wall 43a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a refrigerator in which a ventilation plate for accessing a filter is arranged on a front panel that partitions a machine room. The refrigerator of the present invention includes a showcase and an ice making machine.

  In the field of refrigerators, providing a ventilation plate on a front panel that partitions a machine room is disclosed in, for example, Patent Document 1 and is well known. In the refrigerator described in Patent Document 1, a machine room 20 is provided in an upper part of a refrigerator body (main body) 11 having a storage room, and a condenser 12, a cooling fan 14, and a fan motor 16 are provided in the machine room 20. , And a compressor 18 are disposed. In the refrigerator shown in FIG. 7 of Patent Document 1, the front surface of the machine room 20 is partitioned by a front panel 22, and a ventilation plate (external filter) 64 can be attached to and detached from an opening 22 a opened at the center of the front panel 22. It is arranged. A filter 38 is disposed behind the ventilation plate 64, and maintenance work such as cleaning and replacement of the filter 38 can be performed by removing the ventilation plate 64 from the opening 22 a of the front panel 22.

  The refrigerator according to the present invention is configured so that the ventilation plate can swing and rotate around a hinge mechanism. This configuration is disclosed in Patent Document 2. In the refrigerator described in Patent Document 2, a compressor 5, a condenser 6, a fan motor (electric blower 7) and the like are arranged inside a machine room 2 provided at the lower part of the main body 1. Is fitted with a front panel (decorative cover) 9 having an opening 13. On the front panel 9, a ventilation plate (filter operation door) 14 is pivotally supported so that the upper part can be rotated forward about a support shaft 18 provided at the lower end. A filter 22 is detachably attached to the inside of the ventilation plate 14, and the filter 22 can be exchanged by setting the ventilation plate 14 to an open posture in which the ventilation plate 14 is rotated forward.

JP 2002-250582 A Japanese Utility Model Publication No. 58-13261

  Like the refrigerator of patent document 1, in the structure provided with a machine room in the uppermost part of the refrigerator, it is inevitable that the height position of the ventilation plate mounted on the front panel that partitions the machine room is increased. Removal work such as removal and installation is troublesome, and filter maintenance work cannot be performed efficiently. Incidentally, when the filter maintenance work is performed by only one worker, remove the ventilation plate from the front panel, place the ventilation plate on the floor, clean and replace the filter, and then install the ventilation plate on the floor. It is necessary to pick it up from the surface and attach it to the front panel, which takes time and labor for the filter maintenance work.

  If the ventilation plate is configured to be swingable and rotatable about the axis as in the refrigerator of Patent Document 2, the trouble of removing the ventilation plate from the front panel and the trouble of attaching it become unnecessary, so the filter can be more quickly performed. Maintenance work can be carried out. However, the vent plate of the refrigerator of Patent Document 2 is pivotally supported so that the upper part can be rotated forward about a support shaft provided at the lower end. Since access to the filter is impossible, the configuration of the ventilation plate of Patent Document 2 cannot be applied to a refrigerator having a machine room at the top. It is conceivable that a support shaft is provided at the upper end of the vent plate so that the lower portion of the vent plate can be swung and rotated around the support shaft. However, in the configuration of Patent Document 2, the vent plate is in contact with the periphery of the opening. Therefore, it is not assumed that the ventilation plate is greatly opened, access to the filter is poor, and maintenance work cannot be efficiently performed. Further, in the configuration in which the ventilation plate is opened and closed around the hinge mechanism, if the swing locus of the ventilation plate toward the machine room becomes large, the swing locus becomes a dead space in the machine room, and the degree of freedom in designing the machine room is increased. Inevitably decreases. In addition, if the ventilation plate is pivoted and rotated around the hinge mechanism provided at the upper end, the hinge mechanism and the ventilation plate may interfere with the ceiling surface and the hanging wall of the store. The ventilation plate cannot be opened widely, access to the filter is deteriorated, and maintenance work cannot be efficiently performed. In the worst case, there is a possibility that the hinge mechanism or the ventilation plate interferes with the ceiling surface or the hanging wall of the store and the ventilation plate cannot be opened at all. This problem is often caused by the fact that a marginal size showcase that can be installed in a store is selected, and the margin between the top surface of the showcase and the ceiling of the store is often extremely small. It tends to occur in small stores.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator having an uppermost machine room and a front panel that divides the machine room so that a ventilation plate can swing and rotate without interfering with a ceiling surface or a hanging wall. It is possible to greatly open the plate, and minimize the swinging trajectory of the ventilation plate in the machine room and suppress the occurrence of dead space in the machine room, thereby contributing to the improvement of the design freedom of the machine room. Objective.

  The refrigerator of the present invention was established in a refrigerator main body 1 having a refrigerator compartment 2, a machine room 20 provided at the top of the refrigerator main body 1, a front panel 17 that partitions the front surface of the machine room 20, and the front panel 17. A filter 26 disposed inside the machine room 20 so as to face the square-shaped vent 36, a hinge mechanism 50 disposed on an upper opening edge of the vent 36, and a closed posture in which the vent 36 is closed (FIG. 1). And a vent plate 40 configured to be swingable and openable about a hinge mechanism 50 between an open position (see FIG. 6) and a vent 36 (see FIG. 6). The ventilation plate 40 includes a ventilation wall 42 formed in a quadrangular shape having an opening 44 for ventilation, and an upper side wall 43 a bent backward along the upper edge of the ventilation wall 42. The front panel 17 includes a front wall 30 having a vent 36 and an upper flange wall 37a that projects rearward along the upper opening edge of the vent 36. The hinge mechanism 50 includes first and second hinge plates 52 and 53 each having a bearing cylinder 51, and a hinge pin 54 to be inserted into the bearing cylinder 51 of the hinge plates 52 and 53. The first hinge plate 52 is fixed to the lower surface of the upper flange wall 37a of the front panel 17, the second hinge plate 53 is fixed to the upper surface of the upper wall 43a of the ventilation plate 40, and the hinge pin 54 is fixed to the upper flange wall 37a. And the upper side wall 43a.

  The front and rear positions of the front end of the bearing cylinder 51 of the hinge mechanism 50, the front end of the front wall 30 of the front panel 17, and the front end of the vent wall 42 of the vent plate 40 in the closed position coincide with each other. The length dimension (d1) in the front-rear direction of the plate 53 and the length dimension (d2) in the front-rear direction of the upper wall 43a of the ventilation plate 40 are smaller than the length dimension (d3) in the front-rear direction of the upper flange wall 37a. Is set.

  An open posture maintaining mechanism 60 for maintaining the ventilation plate 40 in the open posture is provided.

  A closed posture maintaining mechanism 70 for maintaining the ventilation plate 40 in the closed posture is provided.

  The closed posture maintaining mechanism 70 can be configured by a magnet catch with a push lock.

  In the refrigerator of the present invention, the front panel 17 that defines the front surface of the machine room 20 includes the front wall 30 having the air vent 36 and the upper flange wall 37a that projects rearward along the upper opening edge of the air vent 36. And provided. In addition, the hinge mechanism 50 of the ventilation plate 40 that opens and closes the ventilation hole 36 is inserted into the first and second hinge plates 52 and 53 having the bearing cylinder 51 and the bearing cylinders 51 of the hinge plates 52 and 53. The first hinge plate 52 is fixed to the lower surface of the upper flange wall 37a of the front panel 17, and the second hinge plate 53 is fixed to the upper surface of the upper side wall 43a of the ventilation plate 40. The hinge pin 54 is disposed between the upper flange wall 37a and the upper side wall 43a. By adopting the configuration as described above, for example, when the ventilation plate 40 is rotated 90 degrees around the hinge pin 54 from the closed posture so that the ventilation wall is in the horizontal posture (see FIG. 8A). It is possible to completely eliminate the ventilation wall 42 located above the upper flange wall 37a. Naturally, it is possible to completely eliminate the ventilation wall 42 located above the uppermost part of the front panel 17. Therefore, according to the refrigerator of the present invention, when there is a small clearance between the upper surface of the front panel 17 and the ceiling surface of the showcase installation location, or between the upper surface of the front panel 17 and the hanging wall W of the store Even when the clearance gap between them is small, the ventilation wall 42 does not interfere with the ceiling surface or the hanging wall W, and the ventilation plate 40 can be opened largely. Further, since the hinge mechanism 50 is provided at the uppermost portion of the ventilation plate 40, the upper end of the ventilation plate 40 does not advance toward the machine room 20 with the swinging opening and closing of the ventilation plate 40, and the machine room 20 It is possible to minimize the swing trajectory at, and to prevent a dead space from being generated in the machine room 20. Therefore, it is possible to contribute to an improvement in the degree of design freedom of the machine room 20.

  When the front and rear positions of the front end of the bearing cylinder 51 of the hinge mechanism 50, the front end of the front wall 30 of the front panel 17, and the front end of the vent wall 42 of the vent plate 40 in the closed position are coincident, the vent plate 40 It is possible to open the vent plate 40 more greatly by preventing the upper surface of the vent wall 42 from interfering with the lower surface of the front wall 30 when the is displaced from the closed posture to the open posture. In addition, the length dimension (d1) in the front-rear direction of the second hinge plate 53 constituting the hinge mechanism 50 and the length dimension (d2) in the front-rear direction of the upper side wall 43a constituting the ventilation plate 40 are the front panel. 17 is set to be smaller than the length dimension (d3) in the front-rear direction of the upper flange wall 37a constituting the member 17, and is closer to the front than the rear end portion of the upper flange wall 37a when the vent plate 40 is in the closed posture. In addition, the rear end portion of the second hinge plate 53 and the rear end portion of the upper side wall 43a can be positioned. Further, since the second hinge plate 53 and the upper side wall 43a can be swung and rotated closer to the front than the rear end portion of the upper flange wall 37a, the swing locus of the ventilation plate 40 in the machine chamber 20 can be changed. It can be minimized to prevent a dead space from being generated in the machine room 20.

  When the open posture maintaining mechanism 60 for maintaining the vent plate 40 in the open posture is provided, the vent plate 40 can be maintained in the open posture in maintenance work such as cleaning or replacement of the filter 26. Therefore, it is possible to proceed with maintenance work more efficiently.

  If the closed posture maintaining mechanism 70 for maintaining the ventilation plate 40 in the closed posture is provided, the ventilation plate 40 can be prevented from coming out of the closed posture and inadvertently swinging around the hinge mechanism 50. it can. When the closed posture maintaining mechanism 70 is configured by a magnet catch with a push lock, the vent plate 40 is held by the magnetic adsorption force only by pushing the vent plate 40 toward the closed posture, and from the closed posture. By further pushing the vent plate 40, the vent plate 40 is slightly pushed forward and a gap S can be formed between the vent plate 40 and the vent 36. Therefore, the operability of the swing opening / closing operation of the ventilation plate 40 can be improved.

It is a vertical side view of the principal part of the refrigerator which concerns on this invention, and has shown the state which has a ventilation plate in a closed position. It is a perspective view of a refrigerator. It is a vertical side view which shows schematic structure of a refrigerator. It is a front view which shows the front panel and ventilation plate of a refrigerator. It is a cross-sectional top view which shows a front panel and a ventilation board. It is a vertical side view of the principal part of a refrigerator, and has shown the state which has a ventilation board in an open posture. It is a vertical side view which shows the push lock mechanism which is a closed posture maintenance mechanism. (A) has shown the state which rotated the ventilation plate 90 degree | times from the closed attitude | position in the refrigerator of this invention, (b) is a schematic block diagram for demonstrating the problem at the time of making a ventilation plate flip-up type. (C) is a schematic block diagram for explaining a problem when the hinge mechanism is directed to the middle part of the ventilation plate.

(Example) The Example which applied the refrigerator concerning this invention to the showcase to FIG. 1 thru | or FIG. 7 is shown. In the present embodiment, front and rear, left and right, and upper and lower follow the cross arrows shown in FIGS. 2 and 3, the showcase includes a refrigerator main body 1, a door 3 that opens and closes an opening of the refrigerator compartment 2 partitioned by the refrigerator main body 1, a cooling unit 4 that supplies cold air to the refrigerator compartment 2, and the like. . The refrigerator body 1 is composed of a vertically long rectangular parallelepiped box whose front surface is open, and is configured as a heat insulating box with an outer box 5 and an inner box 6 and a heat insulating material 7 filled between both boxes 5 and 6. A plurality of display shelves 8 are provided inside the refrigerator compartment 2. A cold air circulation path 10 is formed between the outer side of the inner peripheral wall 9 of the refrigerator compartment 2 and the inner box 6 so as to surround the lower surface and the rear surface of the inner peripheral wall 9. The cold air circulation path 10 is connected to a downward air outlet 11 facing the refrigerator compartment 2 and an upward suction port 12, and an evaporator 13 and an air blowing fan 14 for cold air circulation are installed in the cold air circulation path 10. Has been.

  As shown in FIGS. 2 and 3, a machine room 20 that is partitioned by a front panel 17 and left and right side panels 18, 18 and that has openings on the upper surface side and the rear surface side is provided on the upper portion of the refrigerator body 1. . The side panels 18 and 18 are disposed so as to cover the outer surface of the outer box 5 of the refrigerator body 1. A unit base 22 is disposed on the ceiling surface 21 of the refrigerator body 1, and a condenser 23, a blower fan 24 for the condenser 23, and a compressor 25 are sequentially arranged on the upper surface of the unit base 22 from the front side. ing. As shown in FIG. 4, four blower fans 24 are arranged in the left-right direction. The cooling unit 4 includes a condenser 23, a blower fan 24 and a compressor 25 arranged in the machine room 20, an evaporator 13 installed in the cold air circulation path 10, and a blower fan 14. The cold air discharged from the outlet 11 of the cold air circulation path 10 into the refrigerator compartment 2 absorbs heat in the refrigerator compartment 2 and rises in temperature, and then is sucked into the inlet 12 and cooled by the evaporator 13. Again, it is discharged from the outlet 11 into the refrigerator compartment 2.

  A filter 26 for collecting dust and the like contained in the outside air for cooling is disposed on the front surface of the condenser 23. In FIG. 1 and FIG. 5, reference numeral 27 denotes a support wall that is formed on the upper surface and the left and right surfaces of the condenser 23 and supports fins and the like constituting the condenser 23. A locking piece 28 is bent downward at the front end of the support wall 27 formed on the upper surface of the condenser 23, and the filter 26 can be detached between the locking piece 28 and the condenser 23. A filter mounting portion 29 for supporting the filter is formed. The lower end of the filter 26 is locked by a retaining protrusion 22 a provided on the unit base 22. The filter 26 is removed from the filter mounting portion 29 by picking the knob 26a provided on the front surface of the filter 26 with fingers and pulling the lower end portion of the filter 26 forward to release the locking by the retaining protrusion 22a. Can do.

  As shown in FIGS. 1, 2, 4, and 5, the front panel 17 is a press-formed product that is formed in a horizontally long rectangular shape made of a steel plate or a stainless steel plate, and has a front opening of the machine room 20. And a peripheral wall made up of an upper wall 31, a lower wall 32, and left and right side walls 33, 33 bent backward along the four peripheries of the front wall 30. On the front wall 30 of the front panel 17, left and right laterally-shaped rectangular vents 36 for supplying outside air to the condenser 23 through the filter 26 are opened, and the vent plate 40 has a vent plate 40. It is installed. Panel mounting pieces 34 are fixed to the inner surfaces of the left and right side panels 18, 18, and a pair of upper and lower magnet catches 35, 35 are fixed to each panel mounting piece 34. After the front panel 17 is aligned with the front opening of the machine room 20, the front panel 17 is pushed in, so that the left and right ends of the front wall 30 of the front panel 17 are magnetically attracted to the magnet catches 35 and 35. The panel 17 can be fixed so as to cover the front opening of the machine room 20.

  As shown in FIGS. 1 and 5, a square frame-like flange wall 37 is bent rearward at the periphery of the vent 36, and the front surface of the front panel 17 is surrounded by the flange walls 37. A ventilating path 38 is formed. The flange wall 37 includes an upper flange wall 37a that projects rearwardly along the upper opening edge of the vent 36, and left and right flange walls 37c and 37c that project rearward along the left and right opening edges of the vent 36. And reinforcing walls 37d and 37d bent inward in the left-right direction from the rear ends of the left and right flange walls 37c and 37c.

  The ventilation plate 40 is made of a panel-shaped press-molded product made of a steel plate or a stainless steel plate, and has a laterally elongated rectangular ventilation wall 42 in which a louver wall 41 is formed in a multistage shape, and a periphery of the ventilation wall 42. The surrounding peripheral wall 43 is integrally provided. The peripheral side wall 43 includes an upper side wall 43 a bent rearward along the upper edge of the vent wall 42, a lower side wall 43 b bent rearward along the lower edge of the vent plate 40, and the left and right sides of the vent plate 40. It consists of left and right side walls 43c and 43c bent rearward along the edge. The louver wall 41 is inclined obliquely downward, and external air can be taken into the machine chamber 20 from the opening 44 adjacent to the louver wall 41. As shown in FIG. 4, three rows of louver groups each including seven louver walls 41 are arranged on the ventilation wall 42 in the left-right direction.

  The vent plate 40 is centered on hinge mechanisms 50 formed at three positions of the vent 36 between a closed posture (FIG. 1) for closing the vent 36 and an open posture (FIG. 6) for opening the vent 36. It is configured to be able to swing open and close. As shown in FIG. 4, each hinge mechanism 50 includes first and second hinge plates 52 and 53 having bearing cylinders 51, and hinge pins 54 inserted through the bearing cylinders 51 of both hinge plates 52 and 53. Is done. The first hinge plate 52 is fixed to the lower surface of the upper flange wall 37a of the front panel 17 by screws 55, and the second hinge plate 53 is fixed to the upper surface of the upper side wall 43a of the ventilation plate 40 by screws 56. The hinge pin 54 is disposed between the upper flange wall 37a and the upper side wall 43a. In FIG. 1, reference numeral 57 indicates a cushioning material disposed between the lower surface of the upper flange wall 37 a and the upper surface of the first hinge plate 52.

  As shown in FIG. 1, the three front and rear positions of the front end of the bearing cylinder 51 constituting the hinge mechanism 50, the front end of the front wall 30 of the front panel 17, and the front end of the ventilation wall of the ventilation plate 40 in the closed position are one. I'm doing it. The length dimension (d1) in the front-rear direction of the second hinge plate 53 is set to be smaller than the length dimension (d3) in the front-rear direction of the upper flange wall 37a. Similarly, the longitudinal dimension (d2) of the upper side wall 43a is set smaller than the longitudinal dimension (d3) of the upper flange wall 37a. In this embodiment, the longitudinal dimension (d1) of the second hinge plate 53 and the longitudinal dimension (d2) of the upper side wall 43a are set to the same dimension. As described above, when the ventilation plate 40 is in the closed posture, the rear end portion of the upper side wall 43a and the rear end portion of the upper flange wall 37a do not protrude from the rear end portion of the upper flange wall 37a. The flange wall 37 a is adapted to be accommodated in the ventilation path 38.

  In FIG. 6, reference numeral 60 indicates an open posture maintaining mechanism for maintaining the ventilation plate 40 in the open posture. The open posture maintaining mechanism 60 includes a stand rod 61 that stretches and supports the vent plate 40 in an open posture, a bracket piece 62 that is formed at the end of the left side wall 43c of the vent plate 40 and into which the stand rod 61 is inserted, a machine piece It is comprised by the locking piece 63 fixed to the ceiling surface 21 of the chamber 20, and supporting the base end part of the stand rod 61 so that rocking | fluctuation is possible. The stand rod 61 is a rod-shaped metal molded product, and includes a straight portion 61a that occupies most of the stand rod 61, and a connecting shaft 61b that is formed on the distal end side of the straight portion 61a and is inserted into a connecting hole 64 provided in the bracket piece 62. A bent portion 61c that is continuously bent into an L shape on the base end side of the straight portion 61a, and a connecting portion 61d that is formed continuously with the bent portion 61c and is swingably connected to the locking piece 63. Have. After the ventilation plate 40 is displaced from the closed position to the open position, the stand rod 61 is displaced from the lying position (see FIG. 4) to the standing position (see FIG. 6), and the connecting shaft 61b is inserted into the connecting hole 64. The upper end of the stand rod 61 is connected to the ventilation plate 40. At this time, the connecting shaft 61b is locked in the connecting hole 64, so that the stand rod 61 exerts a tensioning action, and the ventilation plate 40 can be held in the open posture. By releasing the locking state of the connecting shaft 61b and the connecting hole 64 and releasing the tensioning action of the stand rod 61, the stand rod 61 is placed in the recumbent posture and the vent plate 40 is displaced from the open posture to the closed posture. Can be made.

  1 and 7, reference numeral 70 denotes a closed posture maintaining mechanism for maintaining the ventilation plate in a closed posture. The closed posture maintaining mechanism 70 is a magnet catch unit with a push lock, and includes a unit main body 71, a movable rod 72 configured to be able to move in and out of the unit main body 71, and a magnet provided inside the movable rod 72. 73, a ferromagnetic plate 74 provided at the tip of the movable rod 72, and the like. In the unit main body 71, in addition to a biasing element that biases the movable rod 72 toward the advancing posture in which the movable rod 72 largely protrudes from the unit main body 71, a retracted posture in which most of the movable rod 72 is accommodated in the unit main body 71. The catch element to be held in is arranged. When the ventilation plate 40 is rotated around the hinge mechanism 50 and the ventilation plate 40 is pushed backward toward the closed posture, the ventilation plate 40 is moved to the ferromagnetic plate at the tip of the movable rod 72 by the magnetic force of the magnet 73. At the same time, the movable rod 72 is displaced from the advanced position to the retracted position. At this time, since the movable rod 72 is locked and held in the retracted position by the catch element, the ventilation plate 40 is held in the closed position. When the ventilation plate 40 is pushed further backward from the closed posture, the lock holding state of the movable rod 72 by the catch element is released, and the movable rod 72 is displaced by receiving the biasing force of the biasing element. The Accordingly, as shown in FIG. 7, the ventilation plate 40 is pushed forward, and a gap S is formed between the lower end edge of the ventilation plate 40 and the ventilation hole 36 of the front panel 17. By inserting a finger and pulling up the ventilation plate 40 upward, the suction state of the magnet 73 to the ventilation plate 40 can be released, and the ventilation plate 40 can be displaced to the open posture.

  As described above, in the showcase according to the present embodiment, the front panel 17 that defines the front surface of the machine room 20 is directed rearward along the front wall 30 having the vent 36 and the upper opening edge of the vent 36. The upper flange wall 37a formed in a projecting manner is provided. In addition, the hinge mechanism 50 of the ventilation plate 40 that opens and closes the ventilation hole 36 is inserted into the first and second hinge plates 52 and 53 having the bearing cylinder 51 and the bearing cylinders 51 of the hinge plates 52 and 53. The first hinge plate 52 is fixed to the lower surface of the upper flange wall 37a of the front panel 17, and the second hinge plate 53 is fixed to the upper surface of the upper side wall 43a of the ventilation plate 40. The hinge pin 54 is disposed between the upper flange wall 37a and the upper side wall 43a. By adopting the configuration as described above, for example, when the ventilation plate 40 is rotated 90 degrees around the hinge pin 54 from the closed posture so that the ventilation wall is in the horizontal posture (see FIG. 8A). It is possible to completely eliminate the ventilation wall 42 located above the upper flange wall 37a. Naturally, it is possible to completely eliminate the ventilation wall 42 located above the uppermost part of the front panel 17. Therefore, according to the showcase of the present embodiment, when the margin between the upper surface of the front panel 17 and the ceiling surface of the installation location of the showcase is small, or the upper surface of the front panel 17 and the hanging wall W of the store Even if the marginal clearance between the ventilation plate 42 and the hanging wall W is small, the ventilation wall 42 does not interfere with the ceiling surface or the hanging wall W, and the ventilation plate 40 can be opened widely. Further, since the hinge mechanism 50 is provided at the uppermost portion of the ventilation plate 40, the upper end of the ventilation plate 40 does not advance toward the machine room 20 with the swinging opening and closing of the ventilation plate 40, and the machine room 20 It is possible to minimize the swing trajectory at, and to prevent a dead space from being generated in the machine room 20.

  As described above, according to the showcase according to the present embodiment, it is possible to completely eliminate the ventilation wall 42 located above the uppermost part of the front panel 17, so that Even when there are obstacles such as the drooping wall W and the ceiling surface and the marginal gap between the front panel 17 and the drooping wall W is small, the vent plate 40 is placed on the drooping wall W or the like when the vent plate 40 swings and opens. There is no interference, and the ventilation plate 40 can be greatly opened. Therefore, it is possible to more freely install the showcase in the store without the installation restriction such as a marginal gap with the hanging wall W or the like. Since the ventilation plate 40 can be opened widely, maintenance work such as cleaning and replacement of the filter 26 can be easily performed. Since the swing trajectory of the ventilation plate 40 in the machine room 20 can be minimized and the occurrence of a dead space in the machine room 20 can be suppressed, it is possible to contribute to an improvement in design freedom of the machine room 20.

  Incidentally, as shown in FIG. 8B, when the hinge mechanism 50 is arranged at the upper end of the front panel 17 and the ventilation plate 40 is flipped up, a dead space is generated in the machine room 20. Although it can be prevented, the ventilation wall 42 is located above the uppermost portion of the front panel 17 in the open posture, so that the ventilation plate 40 interferes with the hanging wall W or the like when the ventilation plate 40 swings and opens. This is unavoidable and it is impossible to open the ventilation plate 40.

  Further, as shown in FIG. 8C, when the hinge pin 54 is disposed in the middle of the ventilation plate 40, the swing locus of the portion of the ventilation wall 42 located above the hinge pin 54 in the machine room 20. Becomes larger. For this reason, it is inevitable that a dead space is generated in the machine room 20, and the design freedom of the machine room 20 is reduced.

  When the front and rear positions of the front end of the bearing cylinder 51 of the hinge mechanism 50, the front end of the front wall 30 of the front panel 17, and the front end of the vent wall 42 of the vent plate 40 in the closed position are coincident, the vent plate 40 It is possible to open the vent plate 40 more greatly by preventing the upper surface of the vent wall 42 from interfering with the lower surface of the front wall 30 when the is displaced from the closed posture to the open posture. In addition, the length dimension (d1) in the front-rear direction of the second hinge plate 53 constituting the hinge mechanism 50 and the length dimension (d2) in the front-rear direction of the upper side wall 43a constituting the ventilation plate 40 are the front panel. 17 is set to be smaller than the length dimension (d3) in the front-rear direction of the upper flange wall 37a constituting the member 17, and is closer to the front than the rear end portion of the upper flange wall 37a when the vent plate 40 is in the closed posture. In addition, the rear end portion of the second hinge plate 53 and the rear end portion of the upper side wall 43a can be positioned. Further, the second hinge plate 53 and the upper side wall 43a can be swung and rotated closer to the front than the rear end portion of the upper flange wall 37a. In other words, the second hinge plate 53 and the like are ventilated. It can be swung and rotated within 38. Therefore, the swing trajectory of the ventilation wall 42 in the machine room 20 can be minimized, and the occurrence of a dead space in the machine room 20 can be suppressed.

  When the open posture maintaining mechanism 60 for maintaining the vent plate 40 in the open posture is provided, the vent plate 40 can be maintained in the open posture in maintenance work such as cleaning or replacement of the filter 26. Therefore, it is possible to proceed with maintenance work more efficiently.

  If the closed posture maintaining mechanism 70 for maintaining the ventilation plate 40 in the closed posture is provided, the ventilation plate 40 can be prevented from coming out of the closed posture and inadvertently swinging around the hinge mechanism 50. it can. When the closed posture maintaining mechanism 70 is configured by a magnet catch with a push lock, the vent plate 40 is held by the magnetic adsorption force only by pushing the vent plate 40 toward the closed posture, and from the closed posture. By further pushing the vent plate 40, the vent plate 40 is slightly pushed forward and a gap S can be formed between the vent plate 40 and the vent 36. Therefore, the operability of the swing opening / closing operation of the ventilation plate 40 can be improved.

  In the above embodiment, a showcase has been described as an example. However, the refrigerator of the present invention is not limited to a showcase, and may be a commercial refrigerator, an ice making machine, or the like. In the above-described embodiment, the ventilation plate 40 is configured to be swingable and openable on the front panel 17 by the three hinge mechanisms 50. However, the number of hinge mechanisms 50 is not limited to this, and the left and right sides of the ventilation plate 40 are not limited to this. When the width dimension is large, a configuration in which three or more hinge mechanisms are provided can be employed. The ventilation plate 40 is not limited to the louver as shown in the embodiment, and may have a configuration in which a large number of openings are opened in the ventilation wall 42.

DESCRIPTION OF SYMBOLS 1 Refrigerator body 2 Refrigerating room 17 Front panel 20 Machine room 26 Filter 30 Front wall 36 Ventilation hole 37a Upper flange wall 40 Ventilation plate 42 Ventilation wall 43a Upper side wall 50 Hinge mechanism 51 Bearing cylinder 52 1st hinge plate 53 2nd hinge Plate 54 Hinge pin 60 Open posture holding mechanism 70 Closed posture holding mechanism d1 Longitudinal dimension d2 of the second hinge plate d2 Longitudinal dimension d3 of the upper side wall Length dimension of the upper flange wall in the front and rear direction

Claims (5)

A refrigerator main body (1) having a refrigerator compartment (2), a machine room (20) provided at an upper portion of the refrigerator main body (1), a front panel (17) defining a front surface of the machine room (20), a front A filter (26) disposed inside the machine room (20) so as to face a rectangular vent (36) established in the panel (17) and an upper opening edge of the vent (36). A ventilation plate configured to be able to swing open and close around the hinge mechanism (50) between a closed position in which the hinge mechanism (50) is closed and an open position in which the vent (36) is opened. 40)
The ventilation plate (40) includes a ventilation wall (42) formed in a square shape with an opening (44) for ventilation, and an upper wall (43a) bent rearward along the upper edge of the ventilation wall (42). ) And
The front panel (17) includes a front wall (30) having a vent (36), and an upper flange wall (37a) projecting rearward along the upper opening edge of the vent (36). ,
The hinge mechanism (50) includes first and second hinge plates (52, 53) having bearing cylinders (51), and hinge pins (fitting to the bearing cylinders (51) of these hinge plates (52, 53). 54)
The first hinge plate (52) is fixed to the lower surface of the upper flange wall (37a) of the front panel (17), and the second hinge plate (53) is formed on the upper surface of the upper wall (43a) of the ventilation plate (40). A refrigerator, wherein the hinge pin (54) is fixed and disposed between the upper flange wall (37a) and the upper side wall (43a). The front end of the bearing cylinder (51) of the hinge mechanism (50), the front end of the front wall (30) of the front panel (17), and the front end of the vent wall (42) of the vent plate (40) in the closed position. The front and back positions match,
The length dimension (d1) in the front-rear direction of the second hinge plate (53) and the length dimension (d2) in the front-rear direction of the upper side wall (43a) of the ventilation plate (40) are the upper flange wall (37a). The refrigerator according to claim 1, wherein the refrigerator is set smaller than a length dimension (d3) in the front-rear direction.   The refrigerator according to claim 1 or 2, comprising an open posture maintaining mechanism (60) for maintaining the ventilation plate (40) in an open posture.   The refrigerator according to any one of claims 1 to 3, further comprising a closed posture maintaining mechanism (70) for maintaining the ventilation plate (40) in a closed posture.   The refrigerator according to claim 4, wherein the closed posture maintaining mechanism (70) is configured by a magnet catch with a push lock.

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