JP2015031499A - High humidity refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high humidity refrigerator having a structure for circulating cool air in a storage chamber which prevents the uneven degree of drying in accordance with a loading position of food and can refrigerate and preserve food such as vegetable and meat in an even state.SOLUTION: Air in a storage chamber 3 is indirectly cooled with a cooling structure arranged around the storage chamber 3. A suction port 40 provided with a group of suction openings 39 is disposed on either one side of a pair of opposite walls facing a first duct 32 and a second duct 33 of an inner cool air circulation path 31 disposed between the storage chamber 3 and the cooling structure, and an air outlet 42 provided with one group of blowout openings 41 is disposed on the other side. A blower fan 36 is arranged on the inner cool air circulation path 31 such that cool air can flow in a straight line shape from the blowout opening 41 toward the suction opening 39 in the storage chamber 3. A uniform blowout structure for making even blowout speed of cooling air blown out from one group of the blowout opening 41 formed over the whole surface of a wall on which the air outlet 42 is disposed is provided on the side of the air outlet 42.

Description

  The present invention relates to a high-humidity refrigerator capable of indirectly cooling a storage room and maintaining the storage room in a high humidity state. The high-humidity refrigerator is provided with a circulation structure for circulating cool air in the storage room.

  This type of high-humidity refrigerator is disclosed in Patent Document 1. Such a high-humidity refrigerator (cooling storage) of Patent Literature 1 includes a heat good box having a front surface opened inside a storage body formed of a heat insulating wall, and the inside of the heat good box is a storage room (storage room). Has been. A cold air passage is formed between the heat insulation wall and the heat good box, and the cold air exchanged by the evaporator circulates in the cold air passage, so that the air in the storage room is indirectly passed through the heat good box. Cool. An axial fan and a fan cover that circulates the cool air in the storage room are arranged in the lower center of the heat guide box, and a suction port is provided on the bottom side of the fan cover, and an outlet port is provided on the rear side. Each is open. When the blower is driven, cool air stagnating at the bottom of the storage room can be sent obliquely upward from the outlet and circulated along the rear wall of the storage room, and mixed with the cold air at the top of the storage room. This eliminates the occurrence of temperature and humidity differences between the top and bottom of the storage chamber.

  A similar high humidity refrigerator is disclosed in Patent Document 2. Such a high-humidity refrigerator (high-humidity storage) of Patent Document 2 includes a box-shaped main body having an opening on the front surface and a heat insulating door provided on the opening, and the inside of these is formed as a refrigerator compartment (storage chamber). Has been. Ducts are provided on the top surface, rear surface, bottom surface, and left and right side surfaces of the refrigerating room, respectively, and the air in the refrigerating room is circulated through the duct wall by circulating the cold air exchanged by the evaporator through the previous duct. Cool indirectly. In the upper corner of the refrigerating room, a refrigerating room cold air circulation duct and a blower are arranged. A suction port is provided at the upper front end of the cold air circulation duct, and a discharge port is provided at the lower end of the rear surface. In order to make the front-rear gap of the discharge port constant, the end of the discharge port is supported by a discharge control holder. When the blower is driven, the cold air is uniformly discharged from the discharge port along the surface of the rear duct, and returns to the suction port without flowing on the shelf.

Japanese Patent Laid-Open No. 2-157576 (2nd page, FIG. 2) JP-A-5-164453 (paragraph numbers 0017, 0019, 0020, FIG. 1)

  In general, in a high-humidity refrigerator that refrigerates and stores foods in a high-humidity storage room, foods such as vegetables and meat are not put in containers or wrapped, and the surface is prevented from drying out excessively. Can be stored refrigerated. Therefore, for example, when meat is stored refrigerated, the meat can be aged to increase amino acids and the like inside the meat, and in the case of vegetables, it can be stored for a long time while maintaining freshness. However, in a high-humidity refrigerator that forcibly circulates cool air in the storage room with a blower, food is exposed to the cool air circulating in the storage room, so the food surface dries faster than a high-humidity refrigerator that does not have a circulation structure. Inevitable to do.

  In the cooling storage of Patent Document 1, the air in the storage room is circulated by a blower arranged in the lower center of the heat guide box, but the flow rate of the circulating air is fast in the vicinity of the fan cover and slows away from the fan cover. Become. Therefore, in the portion exposed to air having a high flow velocity, the food is dried more than the other portions, and the degree of drying of the food differs depending on the placement position, and the food cannot be refrigerated uniformly. Further, for example, in the case of a large food such as block-shaped meat that is accommodated for aging, the degree of drying tends to vary, such as a portion that is excessively dried locally. In the worst case, there may be many altered parts that are not edible.

  In the high-humidity storage of Patent Document 2, the circulating air discharged from the discharge port of the refrigerating room circulation duct descends along the surface of the rear duct, rises along the heat insulating door, and refrigerates the refrigerating room facing the heat insulating door. It is sucked in from the suction port of the duct. Thus, by circulating the cold air largely from the rear surface to the front surface of the refrigerator compartment, it is possible to prevent the food placed on the shelf from being exposed to the circulating air and drying. However, the circulating cold air also circulates the surrounding cold air due to the viscosity of the air, so it is inevitable that the cold air on the shelf facing the surface of the rear duct and the insulated door circulates, and the cold air located before and after the shelf and the center of the shelf There is a difference in the degree of circulation with the cool air located in the area. As a result, like the cooling storage of Patent Document 1, it is inevitable that the degree of drying of the food varies depending on the placement position of the food, and the food placed on the front and rear central portions of each shelf is effectively removed. It is difficult to cool and dry evenly.

An object of the present invention is to prevent a degree of drying from being different depending on a position where food is placed in a high-humidity refrigerator having a circulation structure that circulates cold air in a storage room, so that foods such as vegetables and meat are in a uniform state. The object is to provide a high-humidity refrigerator that can be stored refrigerated.
An object of the present invention is to provide a high-humidity refrigerator that can dry a block-like meat uniformly and appropriately perform aging.

  The high-humidity refrigerator according to the present invention includes a case main body 1, a square box-shaped storage chamber 3 partitioned inside the case main body 1, and a door 5 that opens and closes the front opening of the case main body 1. The air in the storage chamber 3 is indirectly cooled through the peripheral wall of the storage chamber 3 with a cooling structure disposed around the storage chamber 3. Between the storage chamber 3 and the cooling structure, an internal cold air circulation path 31 for circulating the cool air in the storage chamber 3 is provided. The internal cold air circulation path 31 is formed along the first and second ducts 32 and 33 facing the upper and lower or left and right opposing walls of the storage chamber 3 and the peripheral wall of the storage chamber 3, and And a third duct 34 communicating with the ducts 32 and 33. One of the pair of facing walls facing the first duct 32 and the second duct 33 is provided with a suction port 40 having a group of suction openings 39 and the other has a blower port 42 having a group of blowout openings 41. Provide. The group of outlet openings 41 is formed over the entire surface of the wall where the outlets 42 are provided. A blower fan 36 is disposed in the internal cool air circulation path 31 so that the cool air can flow linearly in the storage chamber 3 from the blowout opening 41 toward the suction opening 39. And the uniform blowing structure for aiming at equalization of the blowing speed of the cool air blown from the group of blowing openings 41 is provided on the side of the blowing outlet 42.

  The opening area of the group of blowing openings 41, the opening shape, and the adjacent pitches P <b> 1 and P <b> 2 in the front-rear direction and the left-right direction of the blowing openings 41 are formed to be the same, and the blowing openings 41 are evenly arranged at the outlets 42. As shown in FIG. 1, the uniform blowout structure is configured by a passage reduction structure that is formed so that the passage cross-sectional area of the duct in which the blowout port 42 is provided gradually decreases as the distance from the third duct 34 increases. .

  The passage cross-sectional area of the duct provided with the outlet 42 is formed to be the same in the cold air flow direction, and the opening area and the opening shape of the group of outlet openings 41 are formed to be the same. As shown in FIG. 6, the uniform blowing structure is configured by a pitch expanding structure formed so that the adjacent pitch P <b> 1 in the front-rear direction of the blowing opening 41 gradually increases as the distance from the third duct 34 increases.

  The passage cross-sectional area of the duct provided with the air outlets 42 is formed in the same direction in the cold air flow direction, and the adjacent pitches P1 and P2 in the front-rear direction and the left-right direction of the group of air outlets 41 are formed in the same direction. As shown in FIG. 7, the uniform blowing structure is configured by an opening reduction structure that is formed so that the opening area of the blowing opening 41 gradually decreases as the distance from the third duct 34 increases.

  A uniform blowing structure, a passage reducing structure formed so that the passage cross-sectional area of the duct provided with the outlet 42 gradually decreases as the distance from the third duct 34 increases, and the outlet opening 41 adjacent in the front-rear direction The pitch expansion structure formed so that the pitch P1 gradually increases as the distance from the third duct 34 increases, and the opening area of the blowout opening 41 gradually decreases as the distance from the third duct 34 increases. Any two or all of the reduced aperture structures formed in this way are configured.

  As shown in FIG. 1, the high-humidity refrigerator includes a case main body 1, a storage box 2 accommodated in the case main body 1, and an inner storage box 4 that is accommodated in the storage box 2 and partitions the storage chamber 3. It has. The cooling structure includes a cooling passage 21 that circulates cooling air provided between the case body 1 and the storage box 2, an evaporator 14 disposed in the cooling passage 21, and a circulation fan 15. The air in the storage chamber 3 is indirectly cooled through the storage box 2 with the cooling air circulating through the cooling passage 21.

  As shown in FIG. 8, the high-humidity refrigerator includes a case main body 1 and an inner storage box 2 that is stored inside the case main body 1 and partitions the storage chamber 3. The cooling structure includes a cool storage material 49 disposed on the outer periphery of the inner box 1 b of the case body 1 and an evaporator 14 that supplies cold heat to the cool storage material 49. The air in the storage chamber 3 is indirectly cooled through the inner box 1 b of the case body 1 by the cold energy of the cold storage material 49.

  A shelf 18 on which food is placed is horizontally supported inside the storage chamber 3. The shelf 18 is formed in a net shape or a lattice shape so as to be freely ventilated.

  The blow-out opening 41 of the blow-out opening 42 is configured by a through hole that opens directly to the inner storage box 4.

  An opening 35 that connects the internal cold air circulation path 31 and the storage chamber 3 is formed in the peripheral wall of the inner storage box 4. A square dish-shaped suction port cover 43 covering the opening 35 is provided on the inner surface of the inner storage box 4. A group of suction openings 39 is formed on each surface of the suction port cover 43, and the suction ports 40 are constituted by the internal space of the suction port cover 43 and the group of suction openings 39.

  The blower fan 36 is disposed so as to face the opening 35 formed in the inner storage box 4.

  The inner storage box 4 includes an upper wall 28, a lower wall 29, and a rear wall 30, and the left and right ends of the inner storage box 4 are closed with the storage box 2. The internal cold air circulation path 31 is formed along the rear wall 30 and the first duct 32 and the second duct 33 formed along the upper and lower walls 28 and 29 facing the storage chamber 3, and both the ducts 32 and 33. And a third duct 34 communicating with each other. A suction port 40 is provided in the first duct 32 formed on the upper wall 28 of the inner storage box 4, and an outlet 42 is provided in the second duct 33 formed on the lower wall 29 of the inner storage box 4.

  In the high humidity refrigerator according to the present invention, the internal cold air circulation path 31 including the first to third ducts 32, 33, and 34 is provided along the peripheral wall of the storage chamber 3, and the first duct 32 and the second duct are provided. A suction port 40 having a group of suction openings 39 is provided on one of a pair of opposing walls facing 33, and a blower outlet 42 having a group of blowout openings 41 is provided on the other side. The group of blowout openings 41 is formed over the entire surface of the wall where the blowout opening 42 is provided, and the blower fan 36 is disposed in the internal cold air circulation path 31 so that the cool air can be passed through the storage chamber 3 from the blowout opening 41 to the suction opening 39. It was comprised so that it could flow linearly toward. Further, a uniform blowing structure for equalizing the blowing speed of the cold air blown out from the group of blowing openings 41 is provided on the outlet 42 side.

  As described above, in the present invention, a uniform blowing structure is provided so as to equalize the blowing speed of the cold air blown from the group of blowing openings 41 formed over the entire surface of the wall where the blower outlet 42 is provided. Therefore, the flow rate of the cold air that blows out the cold air from the group of blowout openings 41 at a substantially uniform speed and flows linearly from the blowout opening 41 toward the suction opening 39 in the storage chamber 3 is substantially the whole of the storage chamber 3. A uniform flow rate can be achieved. Therefore, it is possible to prevent drying unevenness depending on the placement position of food such as vegetables and meat, and in the case of large meat, prevent the meat surface from being partially dried excessively. The whole meat can be aged in a uniform state.

  According to the uniform blowout structure constituted by the passage reduction structure in which the passage cross-sectional area of the duct provided with the outlet 42 is formed so as to gradually decrease as the distance from the third duct 34 increases, the opening area and the opening The shape and the pitches P1 and P2 adjacent in the front-rear direction and the left-right direction of the blow-off openings 41 are formed to be equal, and the blow-off speed of the cold air blown out from the group of blow-off openings 41 that are evenly arranged at the blow-out openings Can be achieved. Specifically, the pressure distribution of the cold air in the duct provided with the air outlet 42 tends to be higher on the downstream side of the duct due to the inertial action of the airflow. Therefore, if the passage cross-sectional area of the duct provided with the air outlet 42 is uniformly formed from the upstream side to the downstream side, the flow rate of the cold air blown out from the downstream air outlet 41 is increased. However, if a passage reducing structure is provided so that the passage cross-sectional area of the duct in which the air outlet 42 is provided is gradually reduced, the flow resistance is gradually increased toward the downstream side to gradually reduce the cold air pressure. Thus, the pressure distribution of the cold air from the upstream side to the downstream side in the duct can be made substantially the same. Thereby, it is possible to equalize the blowing speed of the cold air blown from the group of blowing openings 41, and the flow rate of the cold air that flows linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3, The flow rate can be made substantially uniform throughout the storage chamber 3.

  According to the uniform blowout structure constituted by the pitch expansion structure formed so that the adjacent pitch P1 in the front-rear direction of the blowout openings 41 gradually increases as the distance from the third duct 34 increases, the blowout openings 42 are provided. The passage cross-sectional area of the duct to be formed is the same in the cold air flow direction, and the blowout speed of the cold air blown out from the group of blowout openings 41 having the same opening area and opening shape can be made uniform. Specifically, the pressure distribution of the cold air in the duct provided with the air outlet 42 tends to be higher on the downstream side of the duct due to the inertial action of the airflow. Therefore, if the passage cross-sectional area of the duct provided with the air outlet 42 is the same from the upstream side to the downstream side, the flow rate of the cold air blown from the downstream side air outlet 41 is increased. However, if the number of blow-off openings 41 formed on the upstream side with the pitch expansion structure is increased from the downstream side and more cold air is blown out from the upstream side, the amount of cold air flowing to the downstream side of the duct is reduced. The pressure on the downstream side can be reduced by reducing the pressure distribution, and the pressure distribution on the upstream side and the downstream side in the duct provided with the air outlet 42 can be made substantially the same. Thereby, it is possible to equalize the blowing speed of the cold air blown from the group of blowing openings 41, and the flow rate of the cold air that flows linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3, The flow rate can be made substantially uniform throughout the storage chamber 3.

  According to the uniform blowout structure constituted by the reduced opening structure formed so that the opening area of the blowout opening 41 gradually decreases with increasing distance from the third duct 34, the duct passage in which the blowout opening 42 is provided. The cross-sectional area is formed in the same direction in the cold air flow direction, and the blowout speed of the cold air blown out from the group of blowout openings 41 in which the adjacent pitches P1 and P2 in the front-rear direction and the left-right direction are the same can be made uniform. . Specifically, the pressure distribution of the cold air in the duct provided with the air outlet 42 tends to be higher on the downstream side of the duct due to the inertial action of the airflow. Therefore, if the passage cross-sectional area of the duct provided with the air outlet 42 is the same from the upstream side to the downstream side, the flow rate of the cold air blown from the downstream side air outlet 41 is increased. However, if the area of the blowout opening 41 formed on the upstream side by providing an opening reduction structure is made larger than that on the downstream side and more cold air is blown out from the upstream side, the amount of cold air flowing to the downstream side of the duct is reduced. The pressure on the downstream side can be reduced by reducing the pressure distribution, and the pressure distribution on the upstream side and the downstream side in the duct provided with the air outlet 42 can be made substantially the same. Thereby, it is possible to equalize the blowing speed of the cold air blown from the group of blowing openings 41, and the flow rate of the cold air that flows linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3, The flow rate can be made substantially uniform throughout the storage chamber 3.

  According to the uniform blowing structure configured by combining any two or all of the passage reducing structure, the pitch expanding structure, and the opening reducing structure, the upstream side and the downstream side in the duct in which the outlet 42 is provided The pressure distribution can be made substantially the same with high accuracy. Thereby, it is possible to equalize the blowing speed of the cold air blown from the group of blowing openings 41, and the flow rate of the cold air that flows linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3, The flow rate can be made substantially uniform throughout the storage chamber 3.

  Cooling air that circulates through the cooling passage 21 is constituted by a cooling passage 21 provided between the case body 1 and the storage box 2, an evaporator 14 disposed in the cooling passage 21, and a circulation fan 15. Thus, the air in the storage chamber 3 was indirectly cooled through the storage box 2. According to this, the indirect cooling type high humidity refrigerator provided with the structure which circulates the cool air in the storage chamber 3 only by providing the storage box 2 and the inner storage box 4 in the conventional direct cooling type refrigerator is obtained. The manufacturing cost of the high humidity refrigerator can be reduced.

  The cooling structure includes a cool storage material 49 disposed on the outer periphery of the inner box 1 b of the case body 1 and an evaporator 14 that supplies cold heat to the cool storage material 49. The air in the storage chamber 3 was indirectly cooled through the inner box 1 b of the case body 1 by the cold energy of the cold storage material 49. According to this, compared with the indirect cooling type high humidity refrigerator provided with the cooling passage 21 as described above, the volume of the storage chamber 3 can be increased by the absence of the cooling passage 21, and the external dimensions of the high humidity refrigerator. Even in the same case, more foods such as vegetables and meat can be accommodated.

  When a shelf 18 on which food is placed is horizontally supported in the storage chamber 3 and the shelf 18 is formed in a net shape or a lattice shape so as to be ventilated, the flow of cold air flowing in the storage chamber 3 is generated in the shelf 18. The flow can be made to flow linearly from the blowout opening 41 toward the suction opening 39 without interfering with. In addition, the contact area between the shelf 18 and the food can be reduced to prevent drying unevenness on the food surface.

  When the blowout opening 41 of the blowout opening 42 is configured by a through hole that opens directly into the inner storage box 4, the through hole is opened by punching with a press machine or cutting with a laser cutting machine when the inner storage box 4 is manufactured. Only by doing, the group of blow-off openings 41 can be easily formed, and the manufacturing cost of the high-humidity refrigerator can be reduced.

  A group of suction openings 39 are formed on each surface of a rectangular dish-shaped suction port cover 43 covering the opening 35 of the inner storage box 4, and the suction ports 40 are connected to the inner space of the suction port cover 43 and the group of suction openings 39. The suction force of the blower fan 36 that acts on the opening 35 can be applied to the entire group of suction openings 39 via the internal space of the suction port cover 43, and cold air is sucked from a wider area. Can do. Accordingly, it is possible to prevent the cool air blown out from the group of blowout openings 41 from being directed toward the openings 35 and to flow linearly in the storage chamber 3. Moreover, it can prevent that the fragment of food penetrate | invades into the internal cold air circulation path 31 from the opening 35, and it can prevent that the internal cold air circulation path 31 is soiled by the penetration of food fragments.

  When the blower fan 36 faces the opening 35 formed in the inner storage box 4, it is possible to eliminate the influence of the turbulence of the air flow generated by the blower fan 36 on the flow rate of the cool air blown from the group of blowout openings 41. . Specifically, since the flow of cool air immediately after passing through the blower fan 36 is disturbed, if there is a blower outlet 42 in the vicinity of the blower fan 36, the pressure distribution in the duct in which the blower outlet 42 is provided is not affected by the disturbance. Equilibrium occurs and the blowout speed cannot be made uniform. However, if the blower fan 36 is disposed so as to face the opening 35, the distance from the blower outlet 42 to the blower fan 36 can be increased, so that the turbulence of the air flow is rectified while the cold air flows in the internal cold air circulation path 31. Can do. Thereby, imbalance does not arise in the pressure distribution in the duct in which the blower outlet 42 is provided, and the influence on the flow velocity of the cold air blown out from the group of blowout openings 41 can be eliminated.

  When a suction port 40 is provided in the first duct 32 formed in the upper wall 28 of the inner storage box 4 and a blowout port 42 is provided in the second duct 33 formed in the lower wall 29 of the inner storage box 4, a piece of food In addition, it is possible to reliably prevent water droplets or the like adhering to or from the food from coming into contact with the blower fan 36 and being contaminated.

It is a vertical side view of the high humidity refrigerator which concerns on 1st Example of this invention. It is a perspective view which shows the whole high humidity refrigerator. It is a vertical front view of a high-humidity refrigerator. It is a figure which shows the cross-sectional top view of a high-humidity refrigerator, and a 1st duct board. It is a vertical side view of the high humidity refrigerator which concerns on 2nd Example of this invention. It is a figure which shows the 1st duct board which concerns on 2nd Example of this invention. It is a figure which shows the 1st duct board which concerns on 3rd Example of this invention. It is a vertical side view of the high humidity refrigerator which concerns on 4th Example of this invention.

(First Embodiment) FIGS. 1 to 4 show a first embodiment in which the high-humidity refrigerator according to the present invention is applied to a meat aging store that refrigerates and stores meat while aging. In the present invention, front / rear, left / right, and upper / lower follow the cross arrows shown in the figure and the front / rear, left / right, and upper / lower indications shown near each arrow. In FIG. 2, the meat aging box includes a case main body 1 formed of a box body in which a peripheral wall excluding a front opening is formed by a heat insulating wall. A rectangular box-like storage box 2 that is long on the left and right is arranged inside the case body 1, and an inner storage box 4 that divides the storage chamber 3 is arranged inside the case body 1, and the meat ripening cabinet is configured in a triple structure. Has been. The front opening of the case body 1 can be opened and closed by a pair of left and right doors 5 having a double door structure, and a sealing structure for sealing a gap between the closed doors 5 and 5 is provided at the swinging ends of the doors 5 and 5. It has been.

  As shown in FIGS. 3 and 4, a device housing portion 6 that houses the refrigeration device is provided on the left side of the case body 1, and a device room panel 7 is fixed to the front surface of the device housing portion 6. Yes. An operation unit 8 for controlling the operating state of the cooling structure is disposed on the upper part of the equipment room panel 7. The operation unit 8 is provided with an adjustment dial 9 for adjusting the rotational speed of a blower fan 36 to be described later. (See FIG. 2). A top plate 10 serving as a cooking table is provided on the upper surface of the case main body 1 and the device housing 6. The case main body 1 is comprised by the outer box and inner box which consist of metal plates, such as a stainless steel plate, and the heat insulating material foam-filled between both boxes.

  A compressor 12, a condenser 13, and an evaporator 14 that constitute a refrigeration apparatus are disposed inside the apparatus housing unit 6. The evaporator 14 is disposed in a heat insulating box 16 provided on the upper part of the device housing portion 6, and the opening of the heat insulating box 16 is connected to a communication hole 17 opened in the left peripheral wall of the case body 1. Inside the communication hole 17, the circulation fan 15 is disposed in a state of facing the evaporator 14. Inside the storage chamber 3, a shelf 18 on which food is placed is horizontally supported by a shelf support structure (not shown). The shelf 18 is formed of a thin stainless steel wire fixed by welding in a lattice shape, and is formed to be freely permeable. In addition, the installation height of the shelf 18 can be changed by a shelf support structure (not shown).

  A cooling structure for cooling the air in the storage chamber 3 is provided between the case body 1 and the storage box 2. In this embodiment, the cooling structure is constituted by the cooling air circulation passage 21 provided between the case body 1 and the storage box 2, the evaporator 14 disposed in the cooling passage 21, and the circulation fan 15. . As shown in FIGS. 1 and 3, the storage box 2 formed of a stainless steel plate is formed of a rear wall 22, a bottom wall 23, and left and right walls 24 and 25. The upper ends of the rear wall 22 and the left and right walls 24 and 25 and the front end of the bottom wall 23 are joined to the case main body 1, respectively, and between the walls 22 to 25 and the case main body 1, The previous cooling passage 21 is formed in a state including the internal space and the communication hole 17. As shown in FIG. 3, the cooling air supplied from the circulation fan 15 and heat-exchanged by the evaporator 14 is inverted in the heat insulating box 16 and then descends along the left wall 24 of the storage box 2, It passes through the wall 23 and the right wall 25 to the rear wall 22 side and circulates to the communication hole 17. The entire storage box 2 is cooled by the cooling air circulating in the cooling passage 21, and the air inside the storage chamber 3 is indirectly cooled by this cold heat, and the humidity in the storage chamber 3 is set to a high humidity of 70 to 95%. Can be maintained.

  The inner storage box 4 is configured by an upper wall 28, a lower wall 29, and a rear wall 30 in a U-shaped cross section, and the left and right ends thereof are closed by the left and right walls 24 and 25 of the storage box 3. . Between the storage chamber 3 and the previous cooling structure, and around the inner storage box 4, an internal cold air circulation path 31 for circulating the cool air in the storage chamber 3 is formed. As shown in FIG. 1, the internal cold air circulation path 31 includes a first duct 32 and a second duct 33 formed along the upper wall 28 and the lower wall 29 of the inner storage box 4, and both the ducts 32 and 33. A third duct 34 is formed along the rear wall 30 of the inner storage box 4 for communication. Four circular openings 35 are formed in the upper wall 28 facing the first duct 32, and a blower fan 36 including an axial flow type box fan is disposed inside the first duct 32 facing the opening 35. ing.

  A suction port 40 having a group of suction openings 39 is provided on the lower surface side of the upper wall 28 of the inner storage box 4, and a blower having a group of outlet openings 41 on the lower wall 29 of the inner storage box 4. An outlet 42 is provided. The group of blowing openings 41 is formed over the entire lower wall 29 of the inner storage box 4. The lower surface side of the opening 35 is covered with a rectangular dish-shaped suction port cover 43, and a group of suction openings 39 are formed at regular intervals on the peripheral wall of the cover 43. When the blower fan 36 is driven, the cool air in the storage chamber 3 is sucked from the group of suction openings 39 and flows to the second duct 33 through the first duct 32 and the third duct 34, and from the group of outlet openings 41. It is blown upward and flows linearly in the storage chamber 3 toward the suction opening 39. In this way, by forcibly circulating the cool air in the storage chamber 3, it is possible to eliminate uneven temperature and humidity in the air in the storage chamber 3 that has been indirectly cooled, and to maintain a uniform cool air environment in the storage chamber 3. can do.

  In order to make uniform the blowing speed of the cool air blown out from the group of blowing openings 41 constituting the blowing outlet 42, a uniform blowing structure is provided on the blowing outlet 42 side. In the meat aging store according to this example, the structure of the blowout opening 41 and the second duct 33 is configured as follows. First, as shown in FIG. 4, the opening area of the group of blowing openings 41, the opening shape, and the adjacent pitches P <b> 1 and P <b> 2 in the front-rear direction and the left-right direction of the blowing openings 41 are formed to be the same. The air outlets 42 are arranged evenly. The blowout openings 41 are formed in a state in which a straight line (slit line) in the left-right direction is formed on the lower wall 29 of the inner storage box 4, and each slit line is arranged at a uniform adjacent pitch P1 from the upstream side to the downstream side. The blowout openings 41 are arranged in a grid pattern. Further, as a uniform blowout structure for uniforming the blowout speed of the cold air blown from the group of blowout openings 41, the passage cross-sectional area of the second duct 33 is gradually reduced as the distance from the third duct 34 increases. A passage reducing structure formed to be formed was provided. The passage contracting structure has a diaphragm plate 46 that is inclined upward toward the front end side inside the second duct 33, and the passage cross-sectional area of the second duct 33 gradually increases as the distance from the third duct 34 increases. It was configured to be smaller.

  The pressure distribution of the cold air in the second duct 33 tends to be higher on the downstream side of the duct due to the inertial action of the air flow. Therefore, when the passage cross-sectional area of the second duct 33 is uniformly formed from the upstream side to the downstream side, the flow rate of the cold air blown from the blowout opening 41 on the downstream side is increased. Therefore, if the diaphragm plate 46 is arranged inside the second duct 33 so that the passage cross-sectional area inside the second duct 33 is gradually reduced, the passage resistance is gradually increased toward the downstream side. The pressure distribution of the cold air from the upstream side to the downstream side in the duct can be made substantially the same by gradually decreasing the pressure of the cold air. Accordingly, the blowout speed of the cold air blown out from the group of blowout openings 41 is made uniform, and the flow rate of the cold air flowing linearly from the blowout opening 41 to the suction opening 39 in the storage chamber 3 is stored. A substantially uniform flow rate can be achieved throughout the chamber 3.

  A group of blow-off openings 41 are formed by punching with a pressing machine prior to bending the inner storage box 4 into a U shape, and are formed in a slit shape on the lower wall 29 of the inner storage box 4. Has been. As described above, when the blowout opening 41 of the blowout opening 42 is formed by a through-hole directly opened to the inner storage box 4 by punching with a press machine when the inner storage box 4 is manufactured, a group of blowout openings 41 is easily formed. The manufacturing cost of the high humidity refrigerator can be reduced.

  The flow rate of the cool air that is blown out from the group of blowing openings 41 and flows upward in the storage chamber 3 can be adjusted by changing the rotational speed of the blower fan 36 with the adjustment dial 9 provided in the operation unit 8. When the flow rate of cold air for aging meat is 0.1 m / s to 1.0 m / s, the meat can be ripened suitably while preventing excessive drying of the surface. Since the shelf 18 is formed in a lattice shape so as to be ventilated, the shelf 18 is directed from the blowout opening 41 toward the suction opening 39 without interfering with the flow of the cold air that flows linearly upward in the storage chamber 3. It can be made to flow. In addition, the contact area between the shelf 18 and the meat can be reduced to prevent uneven drying of the meat surface.

  In a direct-cooling type refrigerator in which cold air heat-exchanged by an evaporator is directly circulated in the storage room, moisture condenses during heat exchange and the humidity in the storage room decreases, and the meat surface is excessively dried. Therefore, the moisture inside the meat oozes out to the surface and is dried to the inside of the meat, so that amino acids inside the meat cannot be increased. However, as described above, in the case of a high-humidity refrigerator that indirectly cools the storage chamber 3, the humidity in the storage chamber 3 is maintained at about 70 to 95%, so that only the meat surface is appropriately dried, Meat aging can be performed accurately without drying to the inside. Further, only the meat surface can be appropriately dried by the cold air circulating in the storage chamber 3, so that various germs and the like do not propagate on the meat surface and decay.

  When maturing meat using the first-in first-out method, after the aged meat is taken out, the meat to be newly aged is stored in the space where the aged meat has been stored, and the flow rate of the cold air in the storage chamber 3 is increased. It is better to keep the maturation always constant. When aging multiple meats at once, they can always be aged at a constant flow rate.However, after storing the meat, set the flow rate fast for a certain period of time and dry the surface quickly. Can be lowered and matured. By quickly drying the surface, it is possible to suppress the propagation of germs on the meat surface.

  As described above, when the blower fan 36 is accommodated in the first duct 32 formed on the upper wall 28 of the inner storage box 4 and the lower surface side of the suction port 40 is covered with the suction port cover 43, the blower fan 36 acts on the opening 35. The suction force of the blower fan 36 can be applied to the entire group of suction openings 39 via the internal space of the suction port cover 43. Thereby, cold air can be sucked in from a wide part, the cold air blown out from the group of blowout openings 41 is prevented from being directed toward the openings 35, and the cold air flows linearly in the storage chamber 3. be able to. Further, it is possible to prevent a piece of meat from entering the internal cold air circulation path 31 through the opening 35, and to prevent the internal cold air circulation path 31 from being contaminated by the intrusion of a piece of meat. Furthermore, it is possible to surely prevent a piece of meat or a meat juice exuded from the meat from coming into contact with the blower fan 36 and being contaminated.

  Since the flow of cool air immediately after passing through the blower fan 36 is disturbed, if there is a blower outlet 42 in the vicinity of the blower fan 36, the disturbance causes an imbalance in the pressure distribution in the duct in which the blower outlet 42 is provided. Therefore, it is impossible to make the blowing speed uniform. However, if the blower fan 36 is disposed so as to face the opening 35, the distance from the blower outlet 42 to the blower fan 36 can be increased, so that the turbulence of the air flow is rectified while the cold air flows in the internal cold air circulation path 31. Can do. Thereby, imbalance does not arise in the pressure distribution in the duct in which the blower outlet 42 is provided, and the influence on the flow velocity of the cold air blown out from the group of blowout openings 41 can be eliminated.

  In the above embodiment, the flow passage area of the second duct 33 is gradually reduced by the diaphragm plate 46, but the front end side of the bottom wall 23 of the storage box 2 is formed to be inclined upward, In this case, the diaphragm plate 46 can be omitted.

Second Example FIGS. 5 and 6 show a second example of the meat aging box. In this embodiment, as a uniform blowing structure for equalizing the blowing speed of the cold air blown from the group of blowing openings 41, the adjacent pitch P1 in the front-rear direction of the blowing openings 41 is moved away from the third duct 34. Accordingly, a pitch expansion structure formed so as to gradually increase is provided. Specifically, the passage sectional area of the second duct 33 in this embodiment is uniformly formed from the upstream side to the downstream side. The air outlet 42 is formed in a state that forms a straight line (slit line) in the left-right direction, similar to the air outlet 41 of the first embodiment, but the adjacent pitch P1 in the front-rear direction of each slit line is the second duct. 33 is formed so as to gradually increase from the upstream side toward the downstream side, and the group of blowout openings 41 are arranged in a lattice shape having different adjacent pitches P1 in the front-rear direction. Since others are the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted.

  According to the uniform blowing structure configured with the pitch expansion structure, the number (opening area) of the blowing openings 41 formed on the upstream side of the downstream side of the second duct 33 can be increased. The pressure distribution of the cold air in the duct provided with the air outlet 42 tends to be higher on the downstream side of the duct due to the inertial action of the air flow. Therefore, if the passage cross-sectional area of the second duct 33 is the same from the upstream side to the downstream side, the flow rate of the cold air blown out from the blowout opening 41 on the downstream side is increased. Therefore, if the number of blow-off openings 41 formed on the upstream side by providing a pitch expansion structure is increased from the downstream side and more cold air is blown out from the upstream side, the cold air flowing downstream of the second duct 33 is reduced. The pressure on the downstream side can be reduced by reducing the amount, and the pressure distribution on the upstream side and the downstream side in the duct provided with the outlet 42 can be made substantially the same. Thereby, it is possible to equalize the blowing speed of the cold air blown from the group of blowing openings 41, and the flow rate of the cold air that flows linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3, The flow rate can be made substantially uniform throughout the storage chamber 3.

(3rd Example) FIG. 7: shows the 3rd Example of a meat aging store | warehouse | chamber. In this embodiment, as the uniform blowing structure for equalizing the blowing speed of the cold air blown from the group of blowing openings 41, the opening area of the blowing openings 41 gradually increases as the distance from the third duct 34 increases. An aperture reduction structure formed to be small was provided. Specifically, the passage sectional area of the second duct 33 in this embodiment is uniformly formed from the upstream side to the downstream side. The air outlet 42 is formed in a state that forms a straight line (slit line) in the left-right direction, similar to the air outlet 41 of the first embodiment, but the opening area of each air outlet 41 constituting the slit line is The two ducts 33 are formed so as to gradually decrease from the upstream side toward the downstream side. Adjacent pitches P1 in the front-rear direction of the slit rows are formed to be the same, and a group of blowing openings 41 are arranged in a lattice pattern. Since others are the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted.

  According to the uniform blowout structure constituted by the opening reduction structure, the area of the blowout opening 41 formed on the upstream side of the second duct 33 can be increased. The pressure distribution of the cold air in the duct provided with the air outlet 42 tends to be higher on the downstream side of the duct due to the inertial action of the air flow. Therefore, if the passage cross-sectional area of the second duct 33 is the same from the upstream side to the downstream side, the flow rate of the cold air blown out from the blowout opening 41 on the downstream side is increased. Therefore, if the area of the blowout opening 41 formed on the upstream side by providing an opening reduction structure is made larger than that on the downstream side, and more cold air is blown out from the upstream side, the cold air flowing downstream of the second duct 33 is reduced. The pressure on the downstream side can be reduced by reducing the amount, and the pressure distribution on the upstream side and the downstream side in the second duct 33 can be made substantially the same. Thereby, it is possible to equalize the blowing speed of the cold air blown from the group of blowing openings 41, and the flow rate of the cold air that flows linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3, The flow rate can be made substantially uniform throughout the storage chamber 3.

  As in the first to third embodiments, a uniform blowing structure is provided so as to equalize the blowing speed of the cold air blown from the group of blowing openings 41 formed over the entire surface of the wall where the blower outlet 42 is provided. As a result, the cold air can be blown out from the group of blowout openings 41 at a substantially uniform speed, and the flow rate of the cold air flowing linearly from the blowout opening 41 toward the suction opening 39 in the storage chamber 3 is thereby increased. The flow rate can be made substantially uniform throughout the storage chamber 3. Therefore, it is possible to prevent drying unevenness depending on the position of the meat, and in the case of large-sized meat, the meat surface is prevented from being partially dried excessively, and the whole meat is uniform. Can be aged in various conditions.

  Further, the passage reducing structure, the pitch expanding structure, and the opening reducing structure can be applied independently, or any two or all of the components can be combined to form a uniform blowing structure. In that case, the pressure distribution on the upstream side and the downstream side in the second duct 33 can be made substantially the same with high accuracy. Accordingly, it is possible to equalize the blowing speed of the cool air blown from the group of blowing openings 41, and to store the flow velocity of the cold air flowing linearly from the blowing opening 41 to the suction opening 39 in the storage chamber 3. A substantially uniform flow rate can be achieved throughout the chamber 3.

  A cooling passage 21 comprising a cooling passage 21 that circulates cooling air provided between the case body 1 and the storage box 2, an evaporator 14 disposed in the cooling passage 21, and a circulation fan 15. When the air in the storage chamber 3 is indirectly cooled by the circulating cold air through the storage box 2, the storage box 3 can be simply obtained by providing the storage box 2 and the inner storage box 4 in a conventional direct cooling refrigerator. Indirect cooling high-humidity refrigerators having a structure for circulating cold air can be obtained, and the manufacturing cost of the high-humidity refrigerators can be reduced.

(Fourth Example) FIG. 8 shows a fourth example in which the high humidity refrigerator according to the present invention is applied to a meat aging box. This embodiment is different from the first embodiment in that the cold storage material 49 is used and the air in the storage chamber 3 is indirectly cooled. Since others are the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted.

  In this embodiment, the inner storage box 4 is accommodated inside the case main body 1 to partition the storage chamber 3, and the internal cold air circulation path 31 is formed between the inner storage box 4 and the case main body 1. The case body 1 includes an outer box 1a and an inner box 1b made of a metal plate such as a stainless steel plate, and a heat insulating material 1c that is foam-filled between the boxes 1a and 1b. The heat insulating material 1c is foam-filled in a state where the cool storage material 49 and the evaporator 14 for supplying cold heat to the cool storage material 49 are arranged in the order of description on the outer periphery of the inner box 1b of the case body 1, and the cooling structure is The cool storage material 49 and the evaporator 14 are comprised. The cool storage material 49 is arranged facing the left and right of the third duct 34 and the storage chamber 3, and cools the air circulating through the internal cold air circulation path 31 using the cool heat of the cool storage material 49, The storage chamber 3 is indirectly cooled by the cold heat conducted through the inner box 1b of the main body 1. Thus, by indirectly cooling the air inside the storage chamber 3 via the inner box 1b of the case body 1, the humidity in the storage chamber 3 can be maintained at a high humidity of 70 to 95%.

  As described above, the cooling structure is configured by the regenerator material 49 disposed on the outer periphery of the inner box 1b of the case body 1 and the evaporator 14 that supplies the regenerator material 49 with the cold energy. When the air in the storage chamber 3 is indirectly cooled via the inner box 1b of the case body 1, it is cooled as compared with the indirect cooling high humidity refrigerator having the cooling passage 21 as in the first to third embodiments. The volume of the storage chamber 3 can be increased by the amount of the passage 21, and more meat can be stored even when the external dimensions of the high-humidity refrigerator are the same.

  In each of the above embodiments, the suction port 40 is formed on the upper surface side of the storage chamber 3 and the air outlet 42 is formed on the bottom surface side of the storage chamber 3. However, the suction port 40 and the air outlet 42 are disposed upside down. Can do. Further, the suction port 40 and the air outlet 42 may be provided on the left and right opposing walls of the inner storage box 4. For example, the air inlet 40 is formed on one of the left and right sides, and the air outlet 42 is formed on the other side. Can be formed. In this case, the third duct 34 can be formed on at least one of the upper and lower walls 28 and 29 and the rear wall 30 of the inner storage box 4. Although each blowing opening 41 was arrange | positioned at the grid | lattice form, you may arrange | position in a zigzag form. The door 5 can be constituted by a heat insulating door provided with a viewing window made of double-glazed glass. In this case, the inside of the storage chamber 3 can be visually observed without opening the door 5. The high-humidity refrigerator of the present invention can be used as a refrigerated storage for fresh vegetables in addition to a meat aging box.

DESCRIPTION OF SYMBOLS 1 Main body case 2 Storage box 3 Storage room 4 Inner storage box 5 Door 14 Evaporator 15 Circulation fan 21 Cooling passage 31 Internal cool air circulation path 32 First duct 33 Second duct 34 Third duct 36 Blower fan 39 Suction opening 40 Suction port 41 Air outlet 42 Air outlet 43 Suction port cover P1 Front and rear adjacent pitch P2 Left and right adjacent pitch

Claims (12)

A case body (1), a rectangular box-like storage chamber (3) partitioned inside the case body (1), and a door (5) for opening and closing the front opening of the case body (1),
A high-humidity refrigerator that cools the air in the storage chamber (3) indirectly through the peripheral wall of the storage chamber (3) with a cooling structure disposed around the storage chamber (3),
Between the storage chamber (3) and the cooling structure, an internal cold air circulation path (31) for circulating the cool air in the storage chamber (3) is provided,
The internal cold air circulation path (31) includes a first duct (32) and a second duct (33) formed along opposing walls facing the top and bottom or the left and right of the storage chamber (3), and the storage chamber (3). A third duct (34) formed along the peripheral wall and communicating with both the ducts (32, 33),
One of the pair of opposing walls facing the first duct (32) and the second duct (33) is provided with a suction port (40) having a group of suction openings (39), and the other group is a group of blowouts. An air outlet (42) with an opening (41) is provided;
A group of outlet openings (41) is formed over the entire wall where the outlet (42) is provided,
A blower fan (36) is disposed in the internal cold air circulation path (31) so that the cool air can flow linearly in the storage chamber (3) from the blowout opening (41) to the suction opening (39). And
A high-humidity refrigerator characterized in that a uniform blowout structure is provided on the side of the blowout opening (42) for uniforming the blowout speed of the cold air blown from the group of blowout openings (41). The opening area of the group of outlet openings (41), the opening shape, and the adjacent pitches (P1 and P2) in the front-rear direction and the left-right direction of the outlet openings (41) are formed to be the same, and the outlet openings (41) are the outlets. (42) are evenly arranged,
The uniform blowout structure is constituted by a passage reduction structure formed such that the passage cross-sectional area of the duct provided with the blowout port (42) gradually decreases as the distance from the third duct (34) increases. Item 2. The high humidity refrigerator according to Item 1. The passage cross-sectional area of the duct provided with the air outlet (42) is formed in the same direction in the cold air flow direction, the opening area and the opening shape of the group of air outlets (41) are formed the same,
The uniform blowout structure is configured by a pitch expansion structure formed so that the adjacent pitch (P1) in the front-rear direction of the blowout opening (41) gradually increases as the distance from the third duct (34) increases. The high-humidity refrigerator according to claim 1. The passage cross-sectional area of the duct provided with the air outlet (42) is formed in the same direction in the cold air flow direction, and the adjacent pitches (P1, P2) in the front-rear direction and the left-right direction of the group of air outlets (41) are formed in the same direction. And
2. The uniform blowout structure according to claim 1, wherein the blowout opening (41) is configured as an opening reduction structure formed so that the opening area of the blowout opening (41) gradually decreases as the distance from the third duct (34) increases. High humidity refrigerator.   The uniform blowout structure is formed so that the passage cross-sectional area of the duct provided with the blowout opening (42) gradually decreases as the distance from the third duct (34) decreases, and the blowout opening (41 ), The pitch expansion structure formed so that the adjacent pitch (P1) in the front-rear direction gradually increases as the distance from the third duct (34) increases, and the opening area of the outlet opening (41) is the third. The high-humidity refrigerator according to claim 1, which is configured by combining any two or all of the reduced opening structures formed so as to gradually become smaller as the distance from the duct (34) increases. A case body (1), a storage box (2) housed inside the case body (1), and an inner storage box (4) housed inside the storage box (2) to partition the storage chamber (3) And
The cooling structure has a cooling passage (21) for circulating cooling air provided between the case body (1) and the storage box (2), an evaporator (14) disposed in the cooling passage (21), and a circulation fan. (15) and
The high humidity according to any one of claims 1 to 5, wherein the air in the storage chamber (3) is indirectly cooled by cooling air circulating through the cooling passage (21) via the storage box (2). refrigerator. A case main body (1), and an inner storage box (4) that is accommodated in the case main body (1) and divides the storage chamber (3),
The cooling structure is composed of a cold storage material (49) disposed on the outer periphery of the inner box (1b) of the case body (1), and an evaporator (14) for supplying cold heat to the cold storage material (49),
The air in a storage chamber (3) is indirectly cooled with the cold of a cool storage material (49) via the inner box (1b) of a case main body (1). High humidity refrigerator. A shelf (18) for placing food is horizontally supported inside the storage room (3),
The high-humidity refrigerator according to any one of claims 1 to 7, wherein the shelf (18) is formed in a net shape or a lattice shape so as to be freely ventilated.   The high-humidity refrigerator as described in any one of Claim 6 to 8 with which the blower opening (41) of the blower outlet (42) is comprised by the through-hole directly opened to the inner storage box (4). An opening (35) communicating the internal cold air circulation path (31) and the storage chamber (3) is formed in the peripheral wall of the inner storage box (4),
A square dish-shaped suction port cover (43) covering the opening (35) is provided on the inner surface of the inner storage box (4),
A group of suction openings (39) are formed on each surface of the suction port cover (43),
The high-humidity refrigerator according to any one of claims 6 to 9, wherein the suction port (40) includes an internal space of the suction port cover (43) and a group of suction openings (39).   The high-humidity refrigerator according to claim 10, wherein the blower fan (36) is disposed so as to face an opening (35) formed in the inner storage box (4). The inner storage box (4) is composed of an upper wall (28), a lower wall (29), and a rear wall (30), and the left and right ends of the inner storage box (4) are closed by the storage box (2). And
The internal cold air circulation path (31) includes a first duct (32) and a second duct (33) formed along the opposed upper and lower walls (28, 29) of the storage chamber (3), and the rear wall (30). And a third duct (34) that is formed along the duct and communicates with both the ducts (32, 33).
A suction port (40) is provided in the first duct (32) formed in the upper wall (28) of the inner storage box (4), and the second duct formed in the lower wall (29) of the inner storage box (4). The high-humidity refrigerator according to any one of claims 6 to 11, wherein the duct (33) is provided with an air outlet (42).

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