JP6695172B2 - Cooling device with cleaning structure - Google Patents

Description

  The present invention relates to a cooling device having a cleaning structure provided in a cooling chamber. The cooling device is capable of rapidly cooling or freezing foods immediately after cooking, for example, in a short time, and is provided with a cleaning structure for cleaning a cooler, a fan, a peripheral wall of the cooling chamber and the like inside the cooling chamber.

  This type of cooling device is intended to cool, for example, foodstuffs that have just been cooked (hereinafter simply referred to as foodstuffs), retain the taste and flavor of the foodstuffs, and reduce the temperature drop time in a temperature range where various bacteria are likely to propagate. In order to reduce the temperature, a large fan sends a large amount of cooling air to rapidly cool or rapidly freeze the food. Therefore, fragments of foodstuffs, lipids, broth, etc. are blown off by the cooling air and adhere to the fans, cooling fins, or the peripheral wall of the cooling chamber.

  Japanese Patent Application Laid-Open No. 2004-242242 discloses a cooling box provided with a cleaning structure inside a cooling chamber in order to wash the above-mentioned food fragments and lipids. There, there is a sprinkler type water sprinkler that sprinkles cleaning water (tap water) around while rotating on the ceiling of the cooling room, and a sprinkler pipe for supplying the cleaning water to the sirocco fan is also provided. It is located in the air supply section. At the time of cleaning, the cleaning water is sprinkled inside the cooling chamber with a sprinkler, the fan blades of the sirocco fan are cleaned with the cleaning water supplied to the intake part at the same time, and the cooling water is scattered around the fan to cool the cooler, Clean the inside of the cooling unit. The cleaning water after cleaning is discharged from a drainage unit provided at the bottom of the cooling chamber. The drain part is provided with an odor trap, and the bottom wall of the cooling chamber is inclined downward from the four peripheral edges toward the odor trap.

  In this type of cooling device, the inside of the cooling chamber is washed while sending a large amount of tap water from the sprinkler and the sprinkling pipe, so that all the washing water received by the bottom wall of the cooling chamber goes to the drainage section. Flow. Therefore, the wash water that has flowed in the front-rear direction or the left-right direction is likely to collide with each other and stay at the opening surface of the drainage portion, and the wash water cannot be effectively and neatly flowed down. Further, in the case of the cooling chamber of Patent Document 1 in which the odor trap is provided in the drainage portion, it is more time-consuming to allow the wash water to flow down because the washed food fragments are likely to accumulate in the water storage cup of the odor trap. Is assumed.

  As described above, as a drainage structure for preventing the retention of cleaning water, in the present invention, a damming body that prevents collision of cleaning water and causes cleaning water to flow down in an orderly manner is provided at the drainage port. The fact that the drainage flow is obstructed to improve the drainage capacity can be seen in the drain port adapter of Patent Document 2. There, rod-shaped fins are arranged in a cross shape on the upper surface of the drainboard that covers the opening surface of the drainage port, the drainage flowing toward the drainage port is blocked by the rod-shaped fins, and the drainage is near the drainage port. It suppresses swirling and improves drainage capacity.

Japanese Patent No. 3172824 (paragraph numbers 0012 to 0015, FIG. 1) Japanese Utility Model Publication No. 63-41674 (pages 3 to 4 of the specification, FIG. 1)

  The drain outlet adapter of Patent Document 2 is based on the premise that the drainage flowing toward the drain groove swirls in the vicinity of the drain outlet. In that case, the amount of drainage is not so large, and at most it is blocked by a rod-shaped fin. There is only enough water. Therefore, in the case where a large amount of cleaning water flows toward the drainage portion and collides with it like the cooling box of Patent Document 1, even if the adapter for drainage port of Patent Document 2 is used, Since the entire adapter is submerged in the wash water, it is not possible to prevent the wash water from colliding. In addition, the drainboard that covers the opening surface of the drainage port becomes an obstacle in effectively flowing the wash water.

  In the cleaning structure according to the present invention, the cleaning water in the water storage tank disposed below the cooling chamber is circulated to clean the cooler, the circulation fan, and the like. Fragments of food are likely to settle inside the water tank. Therefore, if the cooling device is used for a long period of time, slime may be formed inside the water storage tank to give off a strange odor, and it becomes difficult to maintain the inside of the cooling chamber in a hygienic state. In order to avoid such a situation, it is effective to provide a drainer with a strainer, for example, to prevent food material fragments from entering the water storage tank. However, if a strainer is installed, the water flow resistance at the drain will increase by that amount, and the flow of washing water will be blocked by the fragments of the ingredients that have been strained by the strainer, allowing the washing water to flow down effectively. Disappear.

An object of the present invention is to provide a cooling device that prevents wash water from colliding with and interfering with a drain port provided at the bottom of a cooling chamber, so that the wash water can effectively flow down.
An object of the present invention is to reliably prevent the food material fragments from entering the water storage tank by the strainer provided at the drain port, to keep the inside of the cooling chamber in a sanitary state, and to remove the food product fragments. An object of the present invention is to provide a cooling device capable of effectively flowing wash water by minimizing the increase in water flow resistance due to.

As shown in FIG. 2, the cooling device according to the present invention is provided inside the cooling chamber 2 with a cooler 15 for supplying cold heat and a circulation fan 16 for circulating cold air . The cooling device includes a cleaning water circulation type cleaning structure for cleaning the inside of the cooler 15, the circulation fan 16 and the cooling chamber 2. The cleaning structure includes a water supply unit 27 that supplies cleaning water to the inside of the cooling chamber 2, a water storage tank 31 that is disposed below the cooling chamber 2 and stores the cleaning water, and a water supply unit 27 that supplies the cleaning water in the water storage tank 31. And a feed pump 32 for feeding under pressure. A drain pipe 42 for fixing the wash water flowing into the drain port 41 to the water storage tank 31 is fixed to the drain port 41 provided on the bottom wall of the cooling chamber 2. As shown in FIG. 1, a drainer 42 is provided with a strainer 55 for filtering out fragments of foodstuffs in the wash water and a dam body 56 for preventing collision of wash water flowing toward the drain port 41 with each other. Mounting. The dam body 56 includes a plurality of partition-shaped dam walls 71 for damming the wash water flowing toward the drainage port 41, and a vertically long guide wall 72 continuous with the dam wall 71. The cleaning water flowing toward the drainage port 41 is guided downward along the guide wall 72 while being dammed by the dam wall 71, and the cleaning water filtered by the strainer 55 is returned to the water storage tank 31.

  As shown in FIG. 7, the damming body 56 is composed of a damming element 69 integrally including a pair of dam walls 71 and a pair of guide walls 72. The damming element 69 is three-dimensionalized with the dam wall 71 and the guide wall 72 extending radially from the central axis of the damming body 56, and the damming elements 69 are fixed to each other inseparably.

  The dam body 56 is composed of three or more dam elements 69. The damming element 69 is bent in a V-shaped cross section along the longitudinal direction, and is provided with symmetrical dam walls 71 and guide walls 72 on both sides of the bending line. The dam wall 71 and the guide wall 72 are formed in a double wall shape by fixing each damming element 69 with the mountain fold line L of each damming element 69 being the center.

  A drain 41 is formed in the bottom wall of the cooling chamber 2. A ring-shaped flange wall 67 is formed to extend around the inlet opening of the strainer 55. The ring-shaped mounting seat 70 is fixed to the lower surface of the dam wall 71 of the dam body 56. The flange wall 67 of the strainer 55 and the mounting seat 70 of the dam body 56 are engaged and mounted on the inner surface of the drainage port 41 to hold the strainer 55 and the damme body 56 at the drainage port 41 so that they cannot be tilted.

  The drainage channel 45 is led out from the bottom wall of the water storage tank 31, and a drainage valve 46 that opens and closes the drainage channel 45 is arranged in the middle of the drainage channel 45. Every time the cleaning process and the rinsing process by the cleaning structure are completed, the operation of the circulation fan 16 and the feed pump 32 is stopped, the drain valve 46 is opened, and the cleaning water in the water storage tank 31 is discharged from the drainage channel 45. ..

  According to the present invention, in the cooling device in which the cooler 15, the circulation fan 16, and the cleaning water circulation type cleaning structure are provided inside the cooling chamber 2, the drain pipe 41 is provided in the drain port 41 provided in the bottom wall of the cooling chamber 2. The strainer 55 and the damming body 56 are mounted inside the drain tube 42. Further, the dam body 56 is provided with a plurality of dam walls 71 for damming the wash water, and a vertically long guide wall 72 continuous with the dam walls 71. According to such a cooling device, the wash water flowing toward the drainage port 41 can be guided downward along the guide wall 72 while being dammed by the dam wall 71. It is possible to eliminate the accumulation in the peripheral portion and effectively flush the wash water into the water storage tank 31. Further, since the wash water filtered by the strainer 55 is made to flow down to the water storage tank 31, it is possible to reliably prevent fragments of food materials from entering the water storage tank 31. Therefore, it is possible to prevent the fragments of the foodstuffs from being settled inside the water storage tank 31 and to prevent the organic matter from spoiling and proliferating various bacteria during long-term use, so that the inside of the cooling chamber 2 can be maintained in a hygienic state.

  When the blocking body 56 is configured by the blocking element 69 including the pair of dam walls 71 and the pair of guide walls 72, the number of blocking elements 69 to be prepared can be reduced when the blocking body 56 is configured. Therefore, the manufacturing cost of the blocking member 56 can be reduced accordingly. In addition, the damming element 69 is three-dimensionally fixed in a state where the dam wall 71 and the guide wall 72 extend radially from the central axis of the damming body 56, so that the wash water flowing toward the drainage port 41 is dammed. It can be dispersed and dammed by the dam wall 71 of the element 69. Therefore, even when the wash water flows from a biased direction and collides with the dam body 56, the impact of collision can be mitigated and offset by the flow of the wash water in the opposite direction, and the dam body 56 is caused by the flow action of the wash water. Can be prevented from tilting or floating away from the drainage port 41, so that the damming action can always be properly exerted.

  According to the damming element 69 that is bent in a V-shaped cross section and has the symmetrical dam wall 71 and the guide wall 72 on both sides of the bending line, the bending strength is higher than that of the plate-shaped damming element 69. Can be improved. Further, each damming element 69 is fixed in a state where the mountain fold line L of each damming element 69 is at the center, and the dam wall 71 and the guide wall 72 are formed in a double wall shape, whereby the damming body 56 is formed. The structural strength and rigidity of can be improved. Therefore, it is possible to prevent the dam wall 71 and the guide wall 72 from bending and deforming due to collision with other objects, and the damming action of the wash water by the dam wall 71 and the flow-down action of the wash water by the guide wall 72 are always appropriate. Can be demonstrated.

  When the flange wall 67 of the strainer 55 and the mounting seat 70 of the dam body 56 are engaged and mounted on the inner surface of the drainage port 41, the strainer 55 and the dam body 56 are held by the drainage port 41 so that they cannot be tilted, and the wash water is removed. The collision impact can be received by the dam body 56 and the drainage port 41. As a result, it is possible to reliably prevent the dam 56 and the strainer 55 from moving due to the collision impact of the wash water, and the strainer 55 and the dam 56 float from the drainage port 41 due to the force of the wash water flowing into the strainer 55. It can be reliably prevented from leaving. Further, by making the centers of the strainer 55 and the damming body 56 coincide with the center of the drainage port 41, the wash water flowing irregularly toward the drainage port 41 is dammed evenly and properly flows into the strainer 55. I can guide you.

  Each time the washing process and the rinsing process are completed, the drain valve 46 is opened and the wash water in the water storage tank 31 is drained from the drainage channel 45. Fine fragments of the food that have passed through the strainer 55 can be drained together with the wash water. .. Therefore, it is possible to well prevent fine fragments of food materials from adhering to the inner surface of the water storage tank 31 and spoiling, or propagation of various bacteria.

It is sectional drawing which shows the drainage structure in the cooling device which concerns on this invention. It is a front view in the state where the door of the cooling device was opened. It is a vertical side view of a cooling device. It is a cross-sectional top view which shows the structure of a cooling unit. It is a cross-sectional plan view showing the inner bottom structure of the cooling chamber. It is an exploded front view and a sectional view showing a drainage structure. It is an exploded perspective view of a dam body. It is an exploded perspective view showing another example of a damming body. It is a perspective view which shows another Example of a damming element. It is a perspective view showing another example of a blocking element.

(Embodiment) FIGS. 1 to 7 show an embodiment of a cooling device according to the present invention. The front, rear, left and right, and the upper and lower sides in the present invention are based on the cross arrows shown in FIGS. 2 and 3, the cooling device includes a main body case 1 formed of a heat insulating box, a door 4 that swings and opens and closes a cooling chamber 2 inside the main body case 1, a base 3 that supports the main body case 1, and the like. There is. Inside the cooling chamber 2, a cooling unit 5, a mounting shelf 6 on which a tray P (hotel bread) containing foodstuffs is mounted, and a cleaning structure described later are provided. The inside of the base 3 is partitioned into an upper machine room 7a and a lower machine room 7b, and refrigeration equipment such as a compressor 8, a condenser 9, and a blower fan 10 is housed inside the lower machine room 7b. An operation panel 11 is arranged on the front surface of the upper machine room 7a.

  As shown in FIGS. 3 and 4, the cooling unit 5 includes a hollow box-shaped unit case 14, a vertically long cooler 15 arranged inside the case 14, a pair of upper and lower circulation fans 16 and a cooling unit. It is composed of a defrosting heater 17 and the like arranged on the wind receiving surface of the vessel 15. The cooler 15 is configured by arranging a refrigerant pipe 18 and a group of fins 19 that are repeatedly bent repeatedly between a pair of front and rear frames. The circulation fan 16 is an axial fan, sucks the internal air on the side of the mounting shelf 6 and sends the pressurized air to the cooler 15.

  The cold air that has passed through the cooler 15 after heat exchange collides with the left wall of the cooling chamber 2 and flows from the front and rear and top and bottom of the cooler 15 to the mounting shelf 6 side and collides with the right wall of the cooling chamber 2. After being inverted, the food in the tray P placed on the placing shelf 6 is cooled and sucked into the circulation fan 16 again. The heater 17 is a sheathed heater, and is arranged in a state of being repeatedly bent along the wind receiving surface of the cooler 15, as shown in FIG. The circulation fan 16 is supported by a motor support arm 23 fixed to the fan shroud 22. The unit case 14 is fixed to an upper bracket 24 and a lower bracket 25 fixed to the left wall of the cooling chamber 2 (see FIG. 2).

  In order to maintain the taste and flavor of the food and to shorten the temperature decrease time in the temperature range where various bacteria are likely to propagate, in this type of cooling device, a large-sized circulation fan 16 supplies a large amount of cooling air. Quickly cool food. Therefore, fragments of foodstuffs, lipids, broth, etc. are blown off by the cooling air and adhere to the circulation fan 16, the fins 19, or the peripheral wall of the cooling chamber 2. In order to wash and wash such food material fragments and lipids with water, a washing water circulation type washing structure is provided inside the cooling chamber 2.

  As shown in FIG. 2 and FIG. 3, the cleaning structure has a water supply unit 27 that supplies cleaning water into the cooling chamber 2 and a water storage that is arranged in the upper machine room 7 a below the cooling chamber 2 and stores the cleaning water. The tank 31 and a feed pump 32 that pressurizes and feeds the wash water in the water storage tank 31 to the water supply unit 27. The water supply unit 27 includes a first cleaning body 29 arranged on the ceiling and a second cleaning body 30 arranged inside the cooling unit 5. The first cleaning body 29 is a commercially available sprinkler, and spouts the cleaning water while rotating around a vertical axis by the spouting reaction force when spouting the cleaning water, thereby spraying the inner wall of the cooling chamber 2 and the outer surface of the cooling unit 5. Wash.

  As shown in FIGS. 3 and 4, the second cleaning body 30 is configured by forming a group of the first nozzle holes 34 and the second nozzle holes 35 on the tube wall of the nozzle tube 33 having a rectangular cross section. .. The second cleaning bodies 30 are arranged at four positions above and below the air receiving surface of the cooler 15, and the front and rear ends thereof are supported by the holders 36. The front end of each second cleaning body 30 is the front end of the cooler 15. It is connected to a water pipe 37 that is vertically arranged and is long in the vertical direction. The second cleaning body 30 is supported with the first nozzle holes 34 inclined toward the cooler 15 and the second nozzle holes 35 inclined toward the circulation fan 16. Therefore, the cleaning water passing through the first nozzle hole 34 is jetted obliquely upward toward the cooler 15, and the cleaning water passing through the second nozzle hole 35 is jetted obliquely upward toward the circulation fan 16. Further, a part of the washing water passing through both nozzle holes 34 and 35 is jetted toward the inner surface of the unit case 14. The adjacent pitch of the second nozzle holes 35 is set to be larger than the adjacent pitch of the first nozzle holes 34, whereby a large amount of cleaning water is ejected to the cooler 15 and between the fins 19 of the cooler 15. It is designed to ensure that the pieces of food that tend to adhere and broth are washed.

  In order to store the wash water in the water storage tank 31 at the start of washing, the water supply pipe 40 is provided on the ceiling of the cooling chamber 2, and the inlet side of the water supply pipe 40 is connected to the water supply. Further, a drainage pipe 42 is provided at a drainage port 41 formed in the bottom wall 2a of the cooling chamber 2 so that the wash water discharged from the water supply pipe 40 can flow down to the water storage tank 31. The water supply passage can be opened and closed by a water supply valve 43 (see FIG. 3) provided in the middle of the water supply passage. The cleaning water pressurized by the feed pump 32 is supplied to the first cleaning body 29 and the second cleaning body 30 via the circulating water passage 44. In FIG. 3, reference numeral 45 is a drainage path, reference numeral 46 is a drainage valve, reference numeral 47 is a water level sensor for detecting a full water level, and reference numeral 48 is an overflow path. A ventilation structure 49 for supplying external air to the cooling chamber 2 in the dry mode to forcibly ventilate the inside of the cooling chamber 2 is provided on the upper portion of the main body case 1.

  In the cooling device configured as described above, a large amount of cleaning water is supplied from the water supply unit 27 into the cooling chamber 2 in the cleaning process and the rinsing process described later. Further, the wash water that has flowed down from the peripheral wall of the cooling chamber 2 and the cooler 15 in each process is received by the bottom wall 2 a of the cooling chamber 2 and flows to the drain port 41. As shown in FIG. 5, the drainage port 41 is formed in the center of the bottom wall 2a, and the bottom wall 2a is drained from the left and right side edges and the front and rear edges in order to smoothly flow the wash water toward the drainage port 41. It is formed by four inclined surfaces 53 inclined downward toward the mouth 41. In such a drainage structure, the wash water flowing along each of the triangular inclined surfaces 53 flows toward the opening surface of the drainage port 41 while the flow is concentrated toward the drainage port 41 and increases in momentum. Therefore, the wash water that has flowed through the inclined surfaces 53 is likely to collide with each other at the opening surface of the drainage port 41 and stay there.

  A strainer 55 is attached to the inside of the drain pipe 42 fixed to the drainage port 41 in order to eliminate the retention of the washing water in the drainage port 41 as described above and to prevent the food fragments from entering the water storage tank 31. However, the damming body 56 is arranged in the inside thereof. As shown in FIGS. 1 and 6, the drain cylinder 42 is a plastic molded product having a flange wall 58 at the upper end of a cylinder body 57 and a threaded portion 59 formed on the upper peripheral surface of the cylinder body 57. With the packing 61 placed on the peripheral wall of the opening 60 of the bottom wall of the drainage port 41, the tube body 57 of the drainage tube 42 is engaged with the opening 60 from above, and the nut 62 is screwed into the threaded portion 59. The drain tube 42 can be fixed to the drain port 41. As shown in FIG. 6, the drain pipe 42 in this state vertically penetrates the bottom wall 2a of the cooling chamber 2, the heat insulating material 2b that covers the outer surface of the wall 2a, and the outer bottom wall 2c that covers the outer surface of the heat insulating material 2b. In this state, the lower part of the cylinder main body 57 projects below the outer bottom wall 2c and enters the tank through the water receiving hole 63 provided in the upper wall of the water storage tank 31. In this way, the inside of the water storage tank 31 is open to the atmosphere through the gap between the cylinder body 57 and the water receiving hole 63.

  The strainer 55 is composed of a stainless mesh material and is vertically long, and has a vertically narrow bottomed cylindrical filter body 66, and a stainless steel ring-shaped flange wall fixed above and below the peripheral edge of the inlet opening. It is equipped with 67. In the cleaning process, the fragments of the food material that have flowed into the strainer 55 together with the cleaning water are filtered off by the filter 66 and accumulated on the inner bottom thereof. Therefore, when the amount of accumulated food material fragments accumulated inside the filter body 66 during the washing process increases, the filtering area of the filter body 66 decreases, and the wash water is stored in the water storage tank 31 at the end of the washing process or the rinsing process. It will not be able to flow down effectively.

  In order to eliminate the above problems and to cause the washing water that has flowed into the strainer 55 to flow down to the water storage tank 31 without hindrance, even if the amount of accumulated food product fragments increases during the washing process and the rinsing process. 66 was formed in a vertically long tubular shape so that the filtration area of the filtration body 66 could be secured with a margin even when a large amount of food material fragments were accumulated. As described above, the vertically long strainer 55 projects below the drain pipe 42 in a state where the bottom portion thereof is located above the full water level of the water storage tank 31 when mounted on the drain pipe 42.

  As shown in FIG. 7, the dam body 56 is composed of four dam elements 69 and ring-shaped mounting seats 70, each of which is made of a stainless plate material. The damming element 69 integrally includes an upper dam wall 71 that dams the cleaning water, and a guide wall 72 that continuously extends downward from the dam wall 71. The damming element 69 in this embodiment is bent in a V-shaped cross section along the longitudinal direction, and symmetrical dam walls 71 and guide walls 72 are provided on both sides of the bending line. The four damming elements 69 are joined and fixed in a back-to-back manner with the respective mountain fold lines L being the center, and the mounting seat 70 fitted onto the guide wall 72 is fixed to the lower surface of the dam wall 71. As a result, they are integrated inseparably. In this embodiment, the flange wall 67 of the strainer 55 and the mounting seat 70 of the dam body 56 are fixed, and the strainer 55 and the dam body 56 are integrated.

  The dam body 56 is three-dimensionalized with the dam wall 71 and the guide wall 72 extending radially from the central axis thereof, and the dam wall 71 and the guide wall 72 each have a double wall shape. The overhang length from the mountain fold line L to the radial tip of the dam wall 71 is set sufficiently larger than the overhang length at the upper end of the guide wall 72 from the mountain fold line L. As described above, according to the damming element 69 having a V-shaped cross section, it is possible to improve the bending strength as compared with the plate-shaped damming element 69. Further, by forming the dam wall 71 and the guide wall 72 in a double wall shape in a state where the adjacent dam wall 71 and the guide wall 72 are in surface contact with each other, the structural strength and rigidity of the dam body 56 can be improved. Can be improved. Along with this, it is possible to prevent the dam wall 71 and the guide wall 72 from colliding with other objects and being bent and deformed, and to prevent the dam wall 71 from blocking the wash water and causing the guide wall 72 to flow down the wash water. It can always be properly demonstrated.

  The dam wall 71 flows toward the drain port 41 in order to receive the wash water flowing from the periphery of the inclined wall 53 toward the drain port 41 and prevent the wash water of the opposite flows from colliding and interfering with each other. It is formed into a partition at a height that does not submerge in the wash water. According to the dam body 56, the wash water flowing toward the dam body 56 is dammed surely by the pair of partition-shaped dam walls 71 to reduce the momentum, and the strainer 55 smoothly flows from the inlet opening. Can be made to flow down.

  By inserting the filter body 66 of the strainer 55 into the drain tube 42, the strainer 55 and the damming body 56 can be attached to the drain tube 42. As shown in FIG. 1, the peripheral edge of the flange wall 67 of the strainer 55 and the peripheral edge of the mounting seat 70 of the dam body 56 in this state engage with the inner surface of the drainage port 41, respectively. It is possible to hold 56 by the drainage port 41 so as not to be tiltable, and to receive the impact of washing water collision by the dam body 56 and the drainage port 41. Further, it is possible to reliably prevent the dam body 56 and the strainer 55 from being displaced due to the impact of washing water, and further, the strainer 55 and the dam body 56 float from the drainage port 41 due to the force of the wash water flowing into the strainer 55. It can be reliably prevented from leaving. By aligning the centers of the strainer 55 and the dam body 56 with the center of the drainage port 41, the wash water that flows irregularly toward the drainage port 41 can be dammed evenly and guided down into the strainer 55 accurately. .. The inner peripheral surface of the filter body 66 of the strainer 55 and the guide wall 72 are adjacent to each other with a small gap, and the lower end of the guide wall 72 faces the inner bottom of the filter body 66 with a small gap.

  A control unit 51 is provided at the rear of the operation panel 11 in order to control the operating state of each device that constitutes the cooling device (see FIG. 3). The control unit 51 has a cooling mode in which a refrigerating machine is operated to rapidly cool or rapidly freeze foodstuffs, and a cleaning mode in which a cleaning structure is operated to clean the inner wall of the cooling chamber 2 and the inside and outside of the cooling unit 5. A program for executing a drying mode for operating the ventilation structure 49, the circulation fan 16, and the heater 17 to dry the inside of the cooling chamber 2 is registered in advance. The operation panel 11 is provided with a mode selection button, a start button, or an adjustment screen for adjusting the operating conditions of each operation mode, and the operating state of the cooling device can be controlled by operating these buttons and the adjustment screen.

  In the cooling mode, after placing the tray P containing the foodstuffs on the mounting shelf 6, the refrigerating machine, the cooler 15, and the circulation fan 16 are operated to expose the foodstuffs to a large amount of cooling air for rapid cooling. .. Since the cooling mode ends when the temperature of the food material has dropped to the predetermined temperature, the tray P is taken out of the refrigerator and the inside of the cooling chamber 2 is emptied.

  In the cleaning mode, cleaning is performed through each cleaning process of cleaning, pre-rinse cleaning, and post-rinse cleaning. In the cleaning process, first, the water supply valve 43 is switched to the open state, tap water is made to flow from the water supply pipe 40 into the cooling chamber 2, and the cleaning water dropped from the drain pipe 42 is stored in the water storage tank 31. When the level in the water storage tank 31 becomes full, the water supply valve 43 is closed based on the signal output from the water level sensor 47. In this state, the circulation fan 16 and the heater 17 are operated, and further the supply pump 32 is operated to supply the cleaning water to the first cleaning body 29 and the second cleaning body 30 and jet from the first cleaning body 29. The inner wall of the cooling chamber 2 and the outer surface of the cooling unit 5 are rinsed with the cleaning water. Further, the cleaning water is ejected from the first nozzle hole 34 of the second cleaning body 30 toward the cooler 15 and the inner surface of the unit case 14, and further, the cleaning water is ejected from the second nozzle hole 35 toward the circulation fan 16. To do.

  Part of the cleaning water ejected from the first cleaning body 29 is sucked into the circulation fan 16 together with the internal air, and cleans the fan blades, the fan shroud 22, and the motor support arm 23. In addition, the cleaning water ejected from the first nozzle holes 34 rinses away the fragments of food materials adhering to the refrigerant pipe 18 and the fins 19, and a part of the cleaning water flows down while being in contact with the sheath pipe of the heater 17 and being heated. To do. Further, the cleaning water ejected from the second nozzle hole 35 is splashed by the air pressurized by the circulation fan 16 and collides with the inner surface of the unit case 14 and the air receiving surface of the cooler 15 to cause the heater 17 to cool. It flows down while being in contact with the protective tube and being heated.

  As described above, by arranging the heater 17 in the circulation path of the cleaning water, the temperature of the cleaning water in the water storage tank 31 can be gradually raised, and eventually the cooler 15 and the circulation fan 16 can be replaced with the cleaning water in the hot water state. Can be washed. Therefore, oil stains that are difficult to remove can be effectively washed off with the wash water in a warm water state. When the cleaning process is completed after a predetermined time has elapsed, the circulation fan 16, the heater 17, and the feed pump 32 are stopped, the drain valve 46 is opened, and the cleaning water in the water storage tank 31 is drained. Discharge from. After the completion of the discharge of the dirty cleaning water, the water supply valve 43 is switched to the open state, and tap water is made to flow down from the water supply pipe 40 into the cooling chamber 2 and is supplied to the water storage tank 31. As a result, after flushing out fragments of foodstuffs, sediments, etc. adhering to the bottom wall of the cooling chamber, the peripheral wall of the drain tube 42, or the bottom wall of the water storage tank 31, the drain valve 46 is returned to the closed state, It is possible to move to the first-stage rinsing process in a cleaner state.

  In the first-stage rinsing and washing process, rinsing and washing are basically performed in the same manner as the washing process, but since it is not always necessary to warm the washing water, the heater 17 can be deactivated. When the pre-stage rinsing and washing process is completed after a lapse of a predetermined time, the circulation fan 16 and the feed pump 32 are deactivated, the drain valve 46 is opened, and the wash water in the water storage tank 31 is discharged from the drain passage 45. After discharging, the drain valve 46 is returned to the closed state. In the latter rinsing and washing process, rinsing and washing are performed in the same manner as in the former rinsing and washing process. After the lapse of a predetermined time and after the subsequent rinsing and washing process, the operation of the circulation fan 16 and the feed pump 32 is stopped, the drain valve 46 is opened, and the wash water in the water storage tank 31 is discharged from the drain passage 45. After discharging, the drain valve 46 is returned to the closed state. As described above, every time the cleaning process and the rinsing process are completed, the drain valve 46 is opened and the cleaning water in the water storage tank 31 is discharged from the drainage channel 45. It can be drained with the wash water. Therefore, it is possible to well prevent fine fragments of food materials from adhering to the inner surface of the water storage tank 31 and spoiling, or propagating germs.

  In the dry mode, the circulation fan 16 and the heater 17 are operated to blow off the water droplets and water lumps attached to each device at the time of cleaning with a large amount of pressurized air sent from the circulation fan 16, and further to heat the heater 17. Is dried while heating the internal air of the cooling chamber 2. The internal air of the cooling chamber 2 in this state contains water and is in a high humidity state. Therefore, even if the internal air is repeatedly circulated by the circulation fan 16, the water droplets attached to the refrigerant tubes 18 and the fins 19 of the cooler 15 cannot be effectively dried.

  In order to effectively dry the inside of the cooling chamber 2, in the drying mode, the ventilation fan of the ventilation structure 49 sends the outside air having low humidity into the cooling chamber 2 and forcibly ventilates the inside of the cooling chamber 2. While circulating the internal air. In this way, when the external air is forcibly fed into the cooling chamber 2, the ventilation structure 49 discharges the internal air in an amount corresponding to the fed external air. Therefore, water droplets adhering to the refrigerant tubes 18 and the fins 19 of the cooler 15 are effectively dried in a shorter time to prevent organic matter from spoiling in the cooling chamber 2 and propagation of miscellaneous bacteria. Can be kept in a hygienic condition. When a predetermined time has elapsed and the drying process is completed, the operations of the circulation fan 16 and the heater 17 are stopped, and the operation of the ventilation fan is stopped. When all the work is completed, the dam body 56 and the strainer 55 are taken out from the drain 42, the fragments of the food material accumulated in the strainer 55 are discarded, and the filter body 66 and the dam body 56 are washed and dried, Reattach to the drain 42.

  In the washing process and the rinsing process, a large amount of washing water flows along the inclined wall 53 toward the drain port 41. However, since the dam body 56 is provided at the drainage port 41 to receive the washing water flowing through the plurality of partition-shaped dam walls 71 and cause the washing water to flow down along the guide wall 72, the washing water of the opposite flows collide with each other. Therefore, it is possible to reliably prevent the water from being buffered and to effectively return the wash water to the water storage tank 31. At this time, the wash water flowing toward the dam body 56 is dammed by the pair of dam walls 71 that are bent at right angles, and its momentum is scraped off. In addition to dropping from the inner edge of 70, the wash water flowing toward the dam body 56 is prevented from staying in the peripheral portion of the drainage port 41, and the wash water can effectively flow down to the water storage tank 31.

  Further, since the fragments of the food material that have flowed into the strainer 55 together with the wash water are filtered out by the filter body 66 of the strainer 55, it is possible to reliably prevent the fragments of the food material from entering the water storage tank 31. Therefore, even if the cooling device is used for a long period of time, it is possible to prevent the washed-out food fragments from settling inside the water storage tank 31 to form slime, and to prevent organic matter from spoiling and germs to propagate. It is possible to eliminate the problem and keep the inside of the cooling chamber 2 in a hygienic state. Further, in the above-described embodiment, the filter body 66 is formed in a vertically long tubular shape so that even if a large amount of food material fragments are accumulated, the filtration area of the filter body 66 can be secured with a margin. Therefore, the washing water can flow down from the filtration surface above the fragments accumulated inside the filtration body 66 without any trouble. Therefore, in the washing process and the rinsing process, it is possible to effectively circulate the wash water by minimizing the increase in the water flow resistance due to the fragments of the food material filtered by the strainer 55.

  FIG. 8 shows another embodiment of the blocking member 56. There, two blocking elements 69 having a flat plate shape form the blocking body 56. A dam wall 71 and a guide wall 72 are integrally provided in the damming element 69, and a slit 73 is formed in one damming element 69 from the upper end of the dam wall 71 to an intermediate part in the vertical direction of the guide wall 72. There is. A slit 74 is formed in the other blocking element 69 from the lower end of the guide wall 72 to a midway portion in the vertical direction of the guide wall 72. After assembling the two damming elements 69 orthogonally in a state in which these slits 73 and 74 are engaged with each other, the mounting seat 70 fitted on the guide wall 72 is fixed to the lower surface of the dam wall 71. The two damming elements 69 can be inseparably integrated.

  FIG. 9 shows another embodiment of the damming element 69. There, a restriction wall 76 having a partial arc shape is formed on the upper edge of the dam wall 71 so that the cleaning water can be prevented from flowing over the upper edge of the dam wall 71 and flowing. The restriction wall 76 may be formed by a flat wall inclined with respect to the dam wall 71 or a flat wall bent at a right angle to the dam wall 71.

  FIG. 10 shows yet another embodiment of the damming element 69. There, a pair of horizontally extending regulating ribs 77 is provided on the wall surface of the dam wall 71 so that the regulating rib 77 can prevent the cleaning water from flowing to the upper edge side of the dam wall 71 and getting over it.

  In the above-described embodiment, the dam body 56 is composed of an even number of damming elements 69, and its plan view shape is formed in a cross shape, but it is not necessary, and it is dammed by the odd number of damming elements 69. The body 56 can be constructed. For example, the dam body 56 can be composed of three dam elements 69 having a V-shaped cross section, and in this case, the angle between the pair of dam walls 71 may be 120 degrees. The water supply unit 27 of the cooling device does not have to have the structure described in the embodiment, and may be arranged according to the structure and arrangement of the cooler 15 and the circulation fan 16. In the above-described embodiment, the strainer 55 and the dam body 56 are inseparably integrated, but it is not necessary that the strainer 55 and the dam body 56 can be made into independent parts. 55/56 can be easily washed. Further, the dam body 56 can be composed of one dam element 69 and a ring-shaped mounting seat 70. In that case, the damming element 69 may be configured as one flat plate-shaped damming element described in FIG. 8. For example, the dam walls 71 provided on the right side wall and the left and right side walls of the damming element 69 are used for cleaning. Water can be blocked. Further, the damming element 69 may be formed of a plastic molded product.

1 Main Body Case 2 Cooling Chamber 15 Cooler 16 Circulation Fan 27 Water Supply Section 31 Water Storage Tank 32 Feed Pump 41 Drainage Port 42 Drainage Tube 55 Strainer 56 Damming Body 69 Damming Element 71 Dam Wall 72 Guide Wall

Claims (5)

Inside the cooling chamber (2), a cooler (15) for supplying cold heat and a circulation fan (16) for circulating cold air are provided.
A cooling device comprising a cleaning water circulation type cleaning structure for cleaning the inside of the cooler (15), the circulation fan (16) and the cooling chamber (2) ,
The cleaning structure includes a water supply unit (27) for supplying cleaning water into the cooling chamber (2), a water storage tank (31) arranged below the cooling chamber (2) for storing cleaning water, and a water storage tank (31). the wash water 31) comprises a pressurized pumping sheet feeding pump (32) to the water supply (27),
A drain pipe (42) for allowing the wash water flowing into the drain port (41) to flow down to the water storage tank (31) is fixed to the drain port (41) provided on the bottom wall of the cooling chamber (2),
A strainer (55) for filtering food fragments in washing water and a damming body (56) for preventing collision of washing water flowing toward the drain port (41) are detachably attached to the drain tube (42). Is attached to the
The dam body (56) includes a plurality of partition-like dam walls (71) for damming the wash water flowing toward the drainage port (41) and a vertically long guide wall (72) continuous with the dam wall (71). Is equipped with
The wash water flowing toward the drainage port (41) is guided downward along the guide wall (72) while being dammed by the dam wall (71), and the wash water filtered by the strainer (55) is stored in the water storage tank ( 31) A cooling device having a cleaning structure characterized by being returned to 31). The damming body (56) is composed of a damming element (69) integrally including a pair of dam walls (71) and a pair of guide walls (72),
The damming element (69) is three-dimensionalized with the dam wall (71) and the guide wall (72) extending radially from the central axis of the damming body (56), and the damming elements (69) are separated from each other. A cooling device comprising the cleaning structure according to claim 1, which is fixedly fixed. The dam body (56) is composed of three or more dam elements (69),
The damming element (69) is bent along the longitudinal direction into a V-shaped cross section, and is provided with symmetrical dam walls (71) and guide walls (72) on both sides of the bending line.
The dam wall (71) and the guide wall (72) are formed in a double wall shape by fixing each damming element (69) with the mountain fold line (L) of each damming element (69) being the center. A cooling device comprising the cleaning structure according to claim 2. The bottom wall of the cooling chamber (2) is formed with a drainage port (41),
A ring-shaped flange wall (67) is formed overhanging around the inlet opening of the strainer (55),
A ring-shaped mounting seat (70) is fixed to the lower surface of the dam wall (71) of the dam body (56),
The strainer (55) flange wall (67) and the mounting seat (70) of the dam (56) are engaged and mounted on the inner surface of the drainage port (41) to provide the strainer (55) and the dam (56). A cooling device having the cleaning structure according to any one of claims 1 to 3, wherein the drainage port (41) is held so that it cannot be tilted. The drainage channel (45) is led out from the bottom wall of the water storage tank (31), and a drainage valve (46) for opening and closing the drainage channel (45) is arranged in the middle of the drainage channel (45).
Every time the cleaning process and the rinsing process by the cleaning structure are completed, the operation of the circulation fan (16) and the feed pump (32) is stopped, the drain valve (46) is opened, and the inside of the water storage tank (31) is cleaned. A cooling device comprising the cleaning structure according to any one of claims 1 to 4, wherein water is discharged from a drainage channel (45).

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