JP6473379B2 - Commercial refrigerator - Google Patents

Description

  The present invention relates to a commercial refrigerator that displays food and beverage containers in a cooled state, and particularly relates to an improvement in a drain water treatment structure for transpiration treatment of drain water generated in a warehouse.

  A refrigerator provided with this type of drain water treatment structure is known, for example, from Patent Document 1. There, an evaporation pan is provided separately from the drain pan provided below the evaporator, and drain water received by the drain pan is fed to the evaporation pan through a water pipe. Refrigerant piping is disposed on the lower surface of the evaporation pan, and the evaporation pan is heated by the heat of the refrigerant that has been pressurized by the compressor and becomes high temperature, thereby promoting the evaporation of drain water in the evaporation pan. The refrigerator of Patent Document 1 is configured as a brown rice storage, and only when the internal temperature exceeds the set temperature, it is only necessary to supply cold air to the internal storage. There is no need to do it frequently.

  The present applicant has previously proposed a commercial refrigerator (open showcase) having a similar drain water treatment structure (Patent Document 2). There, a drain pan that receives drain water flowing down from the evaporator, an evaporating tray disposed below the drain pan, a siphon tube disposed across both pans, and drain water in the evaporating tray is absorbed and evaporated. The drain water treatment structure is composed of the evaporated material. The evaporating body is formed of a non-woven fabric and its lower part is immersed in the drain water in the evaporating dish, and increases the chance of contact between the sucked drain water and the air in the machine room to promote evaporation. A pipe for feeding refrigerant is arranged at the bottom of the inner surface of the evaporating dish, and the drain water is heated by the heat of the refrigerant pressurized by the compressor passing through the pipe to promote evaporation. Yes. Below the evaporating dish, a drainage processing dish and an evaporator for receiving drain water overflowing from the evaporating dish are arranged.

  In the commercial refrigerator of Patent Document 2, the dust floating on the surface of the drain water in the drain pan is fed together with the drain water by feeding the drain water in the drain pan to the evaporation tray through the siphon tube. Avoids being sucked into the siphon tube. Further, the entrance of the siphon tube in the drainage tray is positioned above the bottom wall of the drainage tray, so that dust sinking at the bottom of the drainage tray is prevented from being sucked into the siphon tube together with drain water.

  In the commercial refrigerator of the present invention, the fins of the plate fin type condenser are immersed in drain water to promote evaporation. Such a drain water treatment structure is disclosed in Patent Document 3, for example. Thus, according to the drain water treatment structure that promotes evaporation by immersing the fins of the condenser in the drain water, it is sufficient to immerse only the fins in the drain water, so that the refrigerant gas is avoided from being corroded. Can be eliminated.

JP 2001-208461 A (paragraph numbers 0015 to 0018, FIG. 2) JP 2009-270796 (paragraph numbers 0021 to 0024, FIG. 1) JP 06-294574 A (paragraph number 0007, FIG. 4)

  According to the refrigerator of Patent Document 1, the drain water can be evaporated by heating the drain water with the heat of the refrigerant that has been pressurized by the compressor and has become high temperature. However, if the cooling load of the refrigerator increases and the amount of drain water generated in the evaporator exceeds a certain amount, the drain water evaporation process will not be in time, the drain water will overflow from the evaporation pan, and water leakage will occur. There is a possibility that the inside of the casing that houses the evaporator may be flooded. Therefore, the application target of the drain water treatment structure is limited to a refrigerator with a small cooling load.

  In that respect, in the commercial refrigerator of Patent Document 2, the evaporator is disposed in the evaporating dish, so that it can cope with a larger amount of drain water. In addition, since the waste water treatment tray and the evaporation body are disposed below the evaporating dish, even if drain water overflows from the evaporating dish, it can be received by the waste water treating dish and a larger amount of drain water can be transpired. However, in commercial refrigerators (open showcases), since the displayed food and beverage containers are frequently taken in and out, cold air easily escapes. As a result, the cooling load increases and the frequency of defrosting operation increases. In addition, drain water proportional to the cooling load is generated, and a larger amount of drain water is generated during the defrosting operation, so that the transpiration process may not be in time. Therefore, in the commercial refrigerator of Patent Document 2, a water level sensor is provided in the waste water treatment tray, and when the water level sensor detects that the water level of the drain water is excessive, the water level is excessive on the display unit. It can be displayed to prevent water leakage.

  In commercial refrigerators, the drain water flow path is clogged with litter, causing overflow and water leakage. Garbage lump is often formed by floating dust accumulated over a long period of time and fragments of organic matter, etc. In some cases, mold is generated in the lump lump to form a gel-like lump. It is necessary to remove such a lump by removing the evaporating dish and the drain pan. In the commercial refrigerator of Patent Document 2, since the drainage tray and the wastewater treatment tray can be taken in and out of the machine room, the drainage tray and the wastewater treatment tray can be easily washed as necessary. However, since the evaporating dish is provided with a refrigerant feed pipe, it cannot be removed from the machine room and washed. Moreover, since the evaporating dish is located at the back of the machine room (rear part), it must be cleaned in a narrow space of the machine room, and the cleaning operation becomes complicated and difficult. Therefore, it is easy to leave the dust attached to the inside of the evaporating dish or the surface of the pipe for feeding the refrigerant.

An object of the present invention is to provide a commercial refrigerator that can prevent water leakage even if a portion of the drain water passage is clogged with dirt.
The purpose of the present invention is to facilitate the maintenance for removing all clogs by making it easy to remove and remove all drain pans while effectively draining drain water, so that everyone can easily clean the drain pans. The purpose is to provide a commercial refrigerator.

In the commercial refrigerator according to the present invention, a compressor 6, a plate fin type condenser 7, and a blower fan 8 are accommodated in a machine room 3 of the refrigerator main body 1, and the refrigerator main body is below the condenser 7. drain water processing structure for transpiration process drain water discharged from the refrigerating compartment 2 of that are provided. The drain water treatment structure has a first-stage drain pan 21 that receives drain water guided by the drain pipe 20 from the refrigerator compartment, and a second-stage drain pan 21 that is disposed below the first-stage drain pan 21 and receives overflow water overflowing from the first-stage drain pan 21. A drain pan 23 is provided. The pre-stage drain pan 21 includes a water receiving unit 24 that stores drain water guided by the drain pipe 20, an evaporation pan unit 25 that stores drain water overflowing from the water receiving unit 24, a water receiving unit 24, and an evaporation pan unit. and a first weir portion 27 provided between the 25. The evaporation pan 25 has four side walls, front, rear, left and right. Water receiving section 24 is issued Zhang from either side wall of the left and right evaporation pan 25, are protruded out of the outline of the condenser 7 in a plan view. The evaporation pan 25 is disposed on the lower surface side of the condenser 7, and the drain water is stored in the evaporation pan 25, and the lower part of the fin 7 a of the condenser 7 is immersed in the drain water. A second dam 36 is provided on the rear wall of the water receiver 24 to allow the overflow water to flow down to the next-stage drain pan 23. A water collecting portion 26 is provided on the outer surface of the second cough portion 36 to receive the overflow water. In an abnormal water level where the drain water level of the water receiving unit 24 exceeds the first weir 27, the overflow water is configured to flow down from the second weir 36 to the next drain pan 23.

  The lower part of the drain pipe 20 that is continuously extended from the inner bottom wall of the refrigerator body is fixed and held by a pipe holder 33 provided on the peripheral wall of the water receiving unit 24. The drain pipe 20 and the water receiving part 24 form a trap with the outlet of the drain pipe 20 facing below the water level defined by the first weir part 27.

  The first weir 27 includes a gently inclined wall 28 that gently rises from the bottom wall of the water receiving portion 24 toward the first weir 27. The impact of the drain water flowing down from the drain pipe 20 is reduced by the gently inclined wall 28.

  Between the unit base 14 arranged on the bottom wall of the machine room 3 and the condenser 7 fixed to the base 14, a pan accommodating portion 17 for taking in and out the front drain pan 21 is provided. The pre-stage drain pan 21 is slidably attached to the pan accommodating portion 17 so that the bottom wall of the evaporation pan portion 25 is received by the upper surface of the unit base 14 and the bottom wall of the evaporation pan portion 25 is separated from the unit base 14. It can be displaced vertically between the lower portion of the fin 7a and the evaporation position facing the fin 7a. A pan mounting structure is provided at the rear part of the front-stage drain pan 21 so that the front-stage drain pan 21 is displaced up and down between the attachment / detachment position and the evaporation position in conjunction with the slide attachment / detachment operation of the front-stage drain pan 21.

  The pan mounting structure includes a cam body 46 and an engagement body 45 that slides relative to the cam body 46. One of the cam body 46 and the engagement body 45 is provided in the evaporation pan portion 25, and the remaining other is fixed to the rear portion of the slide area of the evaporation pan portion 25. The cam body 46 and the engagement body 45 are relatively slid in association with the insertion of the front-stage drain pan 21 into the pan accommodating portion 17 from the front, and the rear portion of the front-stage drain pan 21 is held at the evaporation position.

  The condenser 7 is supported by a condenser casing 13 fixed to the unit base 14. Stopper bodies 52 are formed on the left and right walls of the condensing unit casing 13, and elastic arms 53 that are engaged with and disengaged from the stopper body 52 are provided on the outer surfaces of the left and right walls of the front-stage drain pan 21. In a state where the front-stage drain pan 21 is held at the evaporation position, the elastic arm 53 engages with the stopper body 52 to restrict the extraction of the front-stage drain pan 21.

  A funnel body 41 that receives overflow water flowing down from the water collection section 26 on the unit base 14 facing the lower surface of the water collection section 26, and the overflow water received by the funnel body 41 flows down toward the next drain pan 23. A lower drain pipe 22 is provided. The next-stage drain pan 23 disposed below the bottom wall of the machine room 3 is supported by a slide frame 40 fixed to the lower surface of the bottom wall of the machine room 3 so as to be slidable back and forth, and is provided so as to be able to be taken in and out. The lower end of the lower drain pipe 22 is positioned above the taking-in / out locus of the next-stage drain pan 23.

  The funnel body 41 is disposed below the taking-in / out locus of the upstream drain pan 21. In a state where the front-stage drain pan 21 is held at the evaporation position, the water collecting portion 26 and the funnel body 41 face each other vertically with a space therebetween.

  In the present invention, the drain water treatment structure is configured by the drain pipe 20, the front-stage drain pan 21, the next-stage drain pan 23 that receives overflow water overflowing from the front-stage drain pan 21, and the like. The front-stage drain pan 21 includes a water receiving unit 24 that stores drain water flowing down from the drain pipe 20, an evaporation pan unit 25 that stores drain water overflowing from the water receiving unit 24, a water receiving unit 24, and an evaporation pan unit. The first weir 27 provided between 25 and the like. Further, a second weir 36 is provided on the peripheral wall of the water receiver 24 to allow the overflow water to flow down to the next-stage drain pan 23. According to such a commercial refrigerator, when the drain water in the upstream drain pan 21 is likely to overflow, the drain water overflows from the second drainage portion 36 to the next drain pan 23, so that the drain water is installed from the upstream drain pan 21 to the commercial refrigerator. It can be surely prevented from overflowing to the floor. In addition, when a lump is formed in the vicinity of the first wetting portion 27 and drain water that is about to flow down from the water receiving portion 24 to the evaporation pan portion 25 is blocked by the litter lump, It is possible to prevent the drain water from overflowing from the second wetting portion 36 and preventing the water level of the drain water in the upstream drain pan 21 from rising abnormally beyond the second wetting portion 36 and leaking water.

  Moreover, since the lower part of the fin 7a of the condenser 7 is immersed in the drain water in the evaporating pan 25 to promote the drainage of the drain water, it is possible to effectively drain the drain water. Compared to a conventional drain water treatment structure in which a refrigerant feed pipe is arranged inside, it is possible to eliminate the complexity of the structure of the upstream drain pan 21. On the other hand, since the water receiving part 24 protrudes from the surrounding wall of the evaporation pan part 25, and the water receiving part 24 protrudes outside the outline of the condenser 7 in plan view, the heat exchange air passing through the condenser 7 Can be prevented from hitting the surface of the drain water of the water receiving section 24, and the floating dust carried along with the heat exchange air can be prevented from accumulating in the water receiving section 24.

  The drain pipe 20 and the water receiving part 24 constitute a trap with the outlet of the drain pipe 20 facing below the water level defined by the first weir 27. According to such a drain water treatment structure, the outlet of the drain pipe 20 leading to the refrigerating chamber 2 can be blocked with drain water, and the refrigerating chamber 2, the machine chamber 3, and the external space can be prevented from communicating indirectly. Therefore, it is possible to reliably prevent cold air and external air from entering and leaving the refrigerator compartment 2 and improve the operation efficiency of the commercial refrigerator. In addition, insects can be prevented from entering the refrigerator compartment 2 through the drain pipe 20. Furthermore, when taking out the front-stage drain pan 21 from the machine room 3, it is necessary to separate the drain pipe 20 from the pipe holder 33. However, since the water receiving part 24 protrudes outside the outline of the condenser 7, Work can be done easily.

  When a second catching portion 36 is formed on the rear wall of the water receiving portion 24 and a water collecting portion 26 is provided on the outer surface of the water catching portion 24 to receive the overflow water, the overflow water is received by the water collecting portion 26 regardless of the amount of water. It can flow down to the next-stage drain pan 23 in a state where the flow of overflow water is adjusted. Accordingly, it is possible to always prevent the overflow water from leaking to the installation floor of the commercial refrigerator by keeping the overflow water flow position constant.

  If the first dam 27 is provided with a gently sloping wall 28 that gently rises and slopes toward the dam 27, the gentle impact of the drain water flowing down from the drain pipe 20 can be mitigated by the gently sloping wall 28. Also, by mitigating the falling impact of drain water, the flow of drain water flowing from the first wetting portion 27 to the evaporation pan portion 25 is mitigated, and splashing occurs and leaks to the floor of the commercial refrigerator. Can be prevented.

  A pan accommodating portion 17 is provided between the unit base 14 and the condenser 7, and the front drain pan 21 is moved between the attachment / detachment position and the evaporation position at the rear portion of the front drain pan 21 in conjunction with the slide attachment / detachment operation of the front drain pan 21. A pan mounting structure that can be displaced up and down is provided. If the pan mounting structure is provided in this way, the lower drain pan 21 of the condenser 7 can be displaced to the evaporation position simply by inserting the first drain pan 21 into the pan accommodating portion 17 and sliding it, and the drain water in the evaporation pan portion 25 can be moved. It can be immersed in. Further, the front-stage drain pan 21 can be separated from the bread container 17 simply by extracting it from the bread container 17 and sliding it. Therefore, it is possible to facilitate the attachment / detachment of the front-stage drain pan 21, facilitate the maintenance for removing the clogging, and anyone can easily clean the front-stage drain pan 21.

  According to the pan mounting structure constituted by the cam body 46 and the engaging body 45, the cam body 46 and the engaging body 45 slide relative to each other only by inserting and mounting the front drain pan 21 into the pan accommodating portion 17. The rear portion can be held at the evaporation position. Further, since the rear part of the front-stage drain pan 21 is displaced to the attachment / detachment position and the evaporation position by converting the operation of the cam body 46 and the engagement body 45 when relative sliding is performed, the transpiration is effectively performed with the fins 7a immersed in the drain water. The front drain pan 21 can be easily attached and detached. Furthermore, it is possible to simplify the structure of the pan mounting structure and reduce the cost required for its manufacture.

  In a state where the front-stage drain pan 21 is held at the evaporation position, if the elastic arm 53 provided on the front-stage drain pan 21 is provided with a stopper structure that engages with the stopper body 52 provided on the condensing unit casing 13, the front-stage drain pan 21 is Extraction from 17 can be reliably controlled. In addition, it is possible to regulate the generation of noise due to rattling of the pre-stage drain pan 21 that has undergone external vibration.

  When the funnel body 41 and the lower drain pipe 22 are provided in the unit base 14, the overflow water flowing down from the water collecting part 26 is received by the funnel body 41, and when the lower drain pipe 22 flows down to the next-stage drain pan 23, Can be reliably fed to the next-stage drain pan 23. Further, when the lower end of the lower drain pipe 22 is positioned above the loading / unloading path of the next-stage drain pan 23, the lower drain pipe 22 does not interfere with the loading / unloading when the next-stage drain pan 23 is slid back and forth along the slide frame 40. Therefore, the next-stage drain pan 23 can be taken in and out easily and smoothly.

  The funnel 41 is disposed below the trajectory of the upstream drain pan 21 and the water collecting portion 26 and the funnel 41 are vertically opposed to each other with a space in between, while the upstream drain pan 21 can be taken in and out without trouble. This is because the overflow water flowing down from the portion 26 is reliably supplied to the next-stage drain pan 23 without leaking water. For example, in the case where the lower drain pipe 22 is connected to the water collecting section 26, it is necessary to separate the lower drain pipe 22 from the water collecting section 26 and then to extract the upstream drain pan 21. Takes time and effort.

It is a vertical front view which shows the principal part of the drain water treatment structure which concerns on this invention. It is a front view which shows an example of a commercial refrigerator. It is a vertical side view of a commercial refrigerator. It is the sectional view on the AA line in FIG. It is a perspective view of a front | former stage drain pan. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is a vertical side view which shows mounting | wearing operation | movement of a bread mounting structure. It is a cross-sectional top view which shows the control structure of a front | former stage drain pan. It is a side view of the regulation structure of a front | former stage drain pan.

(Example) FIG. 1 thru | or FIG. 10 shows the Example which applied the commercial refrigerator concerning this invention to the reach-in type showcase (henceforth a showcase only). In this embodiment, front and rear, left and right, and up and down follow the arrows shown in FIG. 2 and FIG. The showcase includes a vertically long box-shaped showcase body (refrigerator body) 1 made of a heat insulating box, and a refrigerator compartment 2 and a machine compartment 3 are provided above and below the interior, and a pair of left and right is provided at the front opening of the refrigerator compartment 2. A slide door 4 is arranged. Shelf plates 5 are provided in a multi-stage manner inside the refrigerator compartment 2, and food, beverage containers, etc. are displayed on the shelf plates 5 and cooled.

  In order to generate cool air for cooling, a compressor 6, a plate fin type condenser 7, a blower fan 8 and the like are provided inside the machine room 3. Further, a duct body 9 made of a plastic molded product is fixed to the upper part of the refrigerator compartment 2, and an evaporator 10 and a circulation fan 11 for circulating the cool air are provided therein. The circulation fan 11 sucks the cold air in the cabinet and pressurizes it, and then feeds it toward the evaporator 10. As shown in FIG. 4, the condenser 7 and the blower fan 8 are fixed and integrated with a condenser casing 13 that surrounds both of them, and the condenser casing 13 is a unit disposed on the bottom wall of the machine room 3. It is fixed to the base 14 and provided in front of the compressor 6. In FIG. 4, reference numeral 15 denotes a fan shroud, and reference numeral 16 denotes an air suction hole provided in a panel covering the front surface of the machine room. The heat exchange air that has passed through the condenser 7 and is sucked into the blower fan 8 is pressurized by the fan 8 and fed toward the compressor 6. The compressor 6 is fixed to the unit base 14, and when performing maintenance, the compressor 6, the condenser 7, and the blower fan 8 can be pulled out together with the unit base 14. In a state where the condenser casing 13 is fixed to the unit base 14, a pan accommodating portion 17 is provided between the condenser 7 and the unit base 14 for taking in and out a pre-stage drain pan 21 described later (see FIG. 6).

  When the sliding door 4 is opened and closed to put in and out the displayed goods, the cool air in the cabinet leaks and the outside air enters the cabinet. The external air that has entered the interior circulates together with the cool air in the interior and is cooled by the evaporator 10, while moisture contained in the external air contacts with the low-temperature fins and condenses. Further, during the defrosting operation, the frost attached to the fins and the refrigerant pipe is melted and liquefied. Drain water such as dew condensation water and defrost water is collected by the duct body 9, then flows down along the rear wall of the refrigerator compartment 2, and is sent from the bottom wall of the refrigerator compartment 2 into the machine compartment 3. For this purpose, a drain pipe 20 is provided between the bottom wall of the refrigerator compartment 2 and the machine room 3 to guide the drain water down.

  As described above, the drain water treatment structure is provided in the machine room 3 and the lower side thereof in order to perform the transpiration treatment of the drain water discharged from the interior. As shown in FIG. 6, the drain water treatment structure is arranged below the upstream drain pan 21 for receiving the drain water guided by the drain pipe 20, and the overflow water overflowing from the upstream drain pan 21. It comprises a lower drain pipe 22 for guiding, a next-stage drain pan 23 for receiving overflow water, and the like. The drain pipe 20 and the lower drain pipe 22 are each formed of a soft plastic pipe, and the middle part thereof can be bent as necessary.

  In FIG. 5, the front-stage drain pan 21 includes a water receiving unit 24 that stores drain water guided by the drain pipe 20, an evaporation pan unit 25 that stores drain water overflowing from the water receiving unit 24, and a water receiving unit 24. It consists of a plastic molded product that is integrally provided with a water collecting portion 26 that projects backward from the rear wall. The water receiving part 24 protrudes from the front part of the right side wall of the evaporation pan part 25, protrudes outside the outline of the condenser 7 in plan view, and has a rounded tip. Thus, if the water receiving part 24 is protruded outside the outline of the condenser 7, it is possible to reduce the labor required for attaching and detaching the drain pipe 20, and to easily put in and out the pre-stage drain pan 21. Moreover, since the water receiving part 24 is provided outside the outline of the condenser 7 and the water receiving part 24 is positioned outside the condenser part casing 13, the heat exchange air passing through the condenser 7 It is possible to prevent the floating dust carried along with the heat exchange air from accumulating in the water receiving part 24 by avoiding the water surface of the drain water.

  Between the water receiving unit 24 and the evaporation pan unit 25, a first wetting unit 27 that defines the level of drain water overflowing from the water receiving unit 24 is provided. As shown in FIG. 1, the first dam 27 includes a gently inclined wall 28 that gently rises from the bottom wall of the water receiving portion 24 toward the first dam 27, and the evaporation pan 25 from the first dam 27. And an inclined wall 29 inclined downward toward the bottom wall. This mitigates the impact of the drain water flowing down from the drain pipe 20 by the gently inclined wall 28, relaxes the flow of the drain water flowing down from the first wetting portion 27 to the evaporation pan portion 25, and splashing occurs. This is to prevent this. Incidentally, when the first weir portion 27 is formed of a substantially vertical wall, the water surface of the water receiving portion 24 sways violently due to the impact of the drain water flowing down from the drain pipe 20. Therefore, when the drain water flows down from the first wetting portion 27 to the evaporation pan portion 25, there is a possibility that the water splashes and leaks to the installation floor of the showcase (commercial refrigerator). In each figure, reference numeral 7 a denotes a fin of the condenser 7.

  As described above, although the front opening of the refrigerator compartment 2 is partitioned by the slide door 4, even when the slide door 4 is closed, cold air and external air try to enter and exit through a small gap. In order to regulate the entry and exit of cold air and external air, the trap at the drain pipe 20 and the water receiving part 24 is arranged with the outlet at the lower end of the drain pipe 20 facing below the water level defined by the first weir 27. It is composed. By forming the trap with the drain pipe 20 and the water receiving part 24 in this way, the outlet of the drain pipe 20 communicating with the refrigerator compartment 2 is blocked with drain water, so that the refrigerator compartment 2, the machine compartment 3, and the external space are indirect. Communication can be prevented, and the entry and exit of cold air and external air can be prevented. In this embodiment, the trapping effect can be exhibited even when the outlet of the lower end of the drain pipe 20 faces the vicinity of the bottom wall of the water receiving portion 24 and the drain water level is lower than the first wetting portion 27. I did it. In addition, by forming a trap with the drain pipe 20 and the water receiving unit 24, insects can be prevented from entering the refrigerator compartment 2 from the drain pipe 20. In FIG. 1, reference numeral 33 denotes a pipe holder that is attached to the peripheral wall of the water receiving portion 24 and holds the lower portion of the drain pipe 20.

  In FIG. 5, the evaporating pan unit 25 is provided on the front side of the bread adjacent to the water receiving unit 24 and the horizontally long bread main part 34 having a large bread area and a shallow bread depth provided from the rear part of the bread to the front part of the bread. The provided water conduit 35 having a deep pan depth and a long left and right is provided. On the bottom wall of the bread main portion 34, a group of reinforcing ribs 37 that are long in the front-and-rear direction are bulged and formed at regular intervals. It is. Thus, by providing the reinforcing ribs 37 and the reinforcing walls 38 in the pan main portion 34 and the water conduit 35, the structural strength of the evaporation pan portion 25 is increased, and the front drain pan 21 is prevented from being deformed. The height of the top surface of the bottom wall of the bread main portion 34 and the height of the top portion of the reinforcing wall 38 are matched, and the height of the bottom surface of the valley portion of the water conduit 35 and the bottom surface of the bottom wall of the water receiving portion 24 are matched. It is.

  The rear wall of the water receiving part 24 is provided with a second weir part 36 for flowing overflow water overflowing from the water receiving part 24 and the evaporation pan part 25 to the next-stage drain pan 23. On the side, a rectangular water collecting portion 26 for receiving the overflow water projects. As shown in FIG. 7, a downstream outlet 39 that protrudes downward is integrally provided near the central portion of the water collecting section 26, and the peripheral wall of the downstream outlet 39 is inclined downward toward the downstream outlet 39. .

  The next-stage drain pan 23 is formed of a shallow dish that opens upward, and is supported by a slide frame 40 having an L-shaped cross section fixed to the lower surface of the bottom wall of the machine room 3 so as to be slidable back and forth. The area and bread depth of the next-stage drain pan 23 are set larger than the area and bread depth of the bread main portion 34 (see FIGS. 4 and 7), and a large amount of overflow water overflowing from the previous-stage drain pan 21 is discharged. Can be stored.

  In order to supply the overflow water flowing down from the water collection section 26 to the next-stage drain pan 23 without leaking while the front-stage drain pan 21 is taken in and out without hindrance, the unit base 14 facing the lower surface of the water collection section 26 is supplied to the unit base 14. A funnel body 41 is provided, and the lower drain pipe 22 is connected to a flow-down port 42 provided at the center of the inner bottom wall. The funnel body 41 is disposed below the trajectory of the upstream drain pan 21. In the state where the upstream drain pan 21 is held at the evaporation position as will be described later, the water collecting section 26 and the funnel body 41 vertically Opposite. As described above, when the flow path of the overflow water is divided between the water collecting portion 26 and the funnel body 41, the upstream drain pan 21 can be easily put in and out of the pan accommodating portion 17 without being obstructed by the drain structure. Further, since the lower end of the lower drain pipe 22 is positioned above the loading / unloading path of the next-stage drain pan 23, when the next-stage drain pan 23 is loaded into and unloaded from the slide frame 40, the lower drain pipe 22 interferes with loading / unloading. Nor.

  The front-stage drain pan 21 is slidably attached to and detached from the pan accommodating portion 17 so that the bottom wall of the evaporation pan portion 25 is received by the upper surface of the unit base 14 (the state indicated by the solid line in FIG. 8), and the evaporation pan portion 25. Can be displaced up and down to an evaporation position (a state indicated by an imaginary line in FIG. 8) that floats away from the unit base 14 and faces the lower portion of the fin 7a. As described above, in order to move the pan 21 up and down in conjunction with the slide attachment / detachment operation of the front drain pan 21, the pan mounting structure is provided on the rear portion of the front drain pan 21 and the rear wall of the condenser casing 13.

  In FIG. 8, the pan mounting structure includes an engagement hole (engagement body) 45 provided on the left and right of the rear wall of the condensing unit casing 13, and a pair of left and right protruding from the rear wall of the evaporation pan 25 corresponding to the engagement hole 45. The cam body 46 is used as an element. The engagement hole 45 is a rectangular hole that is slightly larger than the left and right width of the cam body 46 and is long in the vertical direction. The cam body 46 includes a base end arm 47 that is continuous with the bottom wall of the evaporation pan 25, an inclined cam surface 48 that is inclined upwardly and continuously with the base end arm 47, and a slight amount that is continuous with the inclined cam surface 48. The tip arm 49 is inclined upward and rearward. Further, on the upper surfaces of the base end arm 47 and the inclined cam surface 48, a standing wall-shaped reinforcing body 50 that is continuous with the rear wall of the evaporation pan portion 25 is provided.

  The pre-stage drain pan 21 is attached to the pan accommodating portion 17 as follows. First, the rear part of the bottom wall of the evaporation pan 25 is placed on the front part of the upper surface of the unit base 14, and the front drain pan 21 is moved from the front part to the rear part of the bread container 17 as shown by the solid line in FIG. Then, the distal end arm 49 of the cam body 46 is engaged with the engagement hole 45 by the insertion operation. At this time, the flow-down port 39 of the water collecting section 26 rides on the funnel body 41, but the vertical length of the engagement hole 45 is large, so the right end arm 49 toward the engagement hole 45 as viewed in FIG. Engage with no hindrance.

  When the entire pan is further inserted and operated while lifting the front portion of the front-stage drain pan 21 in the above state, the inclined cam surface 48 is received by the lower edge of the engagement hole 45, so that the rear portion of the front-stage drain pan 21 is placed on the unit base 14. The inclined cam surface 48 rides up on the engagement hole 45 while being separated from the engagement hole 45. That is, the cam body 46 and the engagement groove 45 slide relative to push up the rear part of the front drain pan 21 to the evaporation position. Then, as shown by an imaginary line in FIG. 8, with the rear part of the base end arm 47 riding on the engagement hole 45, the water guide path 35 in the front part of the evaporation pan part 25 and the bottom wall of the water receiving part 24 are By mounting on the upper surface of the unit base 14, the entire front-stage drain pan 21 can be held at the evaporation position. Finally, the lower end of the drain pipe 20 is attached to the pipe holder 33 so that the lower end of the drain pipe 20 faces the bottom wall of the water receiving portion 24. The bottom wall of the evaporation pan section 25 in this state is parallel to the lower end of the group of fins 7 a of the condenser 7. Therefore, as shown in FIG. 1, in a state where an appropriate amount of drain water is stored in the evaporation pan 25, the lower ends of the fins 7a are evenly immersed in the drain water.

  As described above, in order to keep the upstream drain pan 21 supported by the condenser casing 13 and the unit base 14 at an appropriate evaporation position, between the condenser casing 13 and the upstream drain pan 21, A restricting structure for restricting forward movement is provided. 9 and 10, the restriction structure includes a pair of stopper windows (stopper bodies) 52 opened on the left and right walls of the condensing unit casing 13 and a pair of elastic arms 53 provided on the front portions of the left and right side walls of the evaporation pan unit 25. Configure. The elastic arm 53 includes an L-shaped curved arm base 54 that is continuously provided from the evaporation pan 25, a stopper claw 55 that projects from the rear end of the arm base 54, and a slant that is continuously inclined to the stopper claw 55. A joint guide arm 56 and an L-shaped release piece 57 continuous with the engagement guide arm 56 are integrally provided. 4 is different from the left elastic arm 53 in that the right elastic arm 53 is continuous from the rear wall of the water receiving portion 24.

  As described above, the engagement guide arm 56 and the stopper claw 55 are received by the outer surface of the side wall of the condensing unit casing 13 in the subsequent stage in which the front-stage drain pan 21 is inserted and slid into the pan housing part 17, and the arm The base portion 54 is elastically deformed so as to spread outward. When the front drain pan 21 is further inserted and held at the evaporation position, the stopper claw 55 falls into the stopper window 52 and engages to restrict the forward movement of the front drain pan 21. When removing the pre-stage drain pan 21, the drain pipe 20 is removed from the pipe holder 33, and then the release pieces 57 of the left and right elastic arms 53 are operated in a direction away from the side wall of the condensing unit casing 13. 55 and the stopper window 52 are disengaged, the front drain pan 21 is moved slightly forward, and the stopper claw 55 is received by the side wall of the condenser casing 13. After that, it can be easily removed by following the above-described procedure for attaching the pre-stage drain pan 21 in reverse.

  In the drain water treatment structure configured as described above, in the state where the compressor 6 is operated and the drain water flows down from the drain pipe, the drain water is evaporated or the overflow water is transferred to the next-stage drain pan 23 as follows. Flow down. As shown in FIG. 1, when drain water flowing down from the refrigerator compartment 2 fills the water receiving portion 24 and new drain water flows into the water receiving portion 24, the drain water is evaporated from the first wetting portion 27 to the evaporation pan. The drain water flows down to the section 25, and drain water having a lower water level than the first weir section 27 is stored in the evaporation pan section 25. In this state, the lower part of the fin 7 a of the condenser 7 is immersed in the drain water stored in the evaporation pan unit 25. Therefore, the drain water can be warmed by the heat of the fins 7a to promote evaporation. When the amount of drain water generated in the refrigerator compartment 2 is small, the drain water level in the evaporation pan section 25 may be lower than the lower part of the fin 7a. Evaporation can be promoted by warming the surface of the drain water with the heat exchange air that has passed through the vessel 7. Further, even when the compressor 6 is stopped, the drain water can be evaporated by a natural evaporation action on the surface of the drain water.

  For example, during the defrosting operation, a large amount of drain water flows down to the pre-stage drain pan 21, and the water level of the evaporation pan unit 25 approaches the water level of the water receiving unit 24. And if the water level of the evaporation pan part 25 and the water receiving part 24 rises exceeding the 1st weir part 27, and also exceeds the height of the 2nd weir part 36, a part of drain water will be from 2nd weir part 36. It overflows to the water collecting section 26 and flows down to the next-stage drain pan 23 through the lower drain pipe 22. At this time, since the second weir portion 36 is formed on the rear wall of the water receiving portion 24, the overflow level is quickly discharged from the water collecting portion 26 to the next-stage drain pan 23 at the same time as the water level of the water receiving portion 24 rises. It is possible to reliably prevent the drain water level of the upstream drain pan 21 from rising abnormally. Incidentally, when the second cough portion 36 is provided at a position far from the water receiving portion 24, the water level of the water receiving portion 24 rises, and the overflow water cannot be drained until a while later. There is a possibility that the level of the drain water in the drain pan 21 rises abnormally and a part of it overflows to the floor of the showcase.

  After a while after the defrosting operation is finished, when the water level of the drain water in the first-stage drain pan 21 is lowered and becomes the same as the height of the second weir 36, the overflow of the overflow water is finished. The overflow water stored in the next-stage drain pan 23 is extracted from the slide frame 40 and discharged once a day, for example. At this time, the next-stage drain pan 23 may be washed with water to wash away dust adhering to the inner surface of the pan. Since the immersion depth of the fin 7a immediately after the overflow of the overflow water is finished is larger than that in the normal state, the amount of heat transferred from the fin 7a to the drain water can be increased to promote transpiration.

  As the use period of the showcase is prolonged, dust may accumulate in the upstream drain pan 21. In particular, a lump of lump is formed near the first clogging portion 27 of the gently inclined wall 28 that is repeatedly exposed to a dry state and a wet state, and drain water that attempts to flow from the water receiving unit 24 to the evaporation pan unit 25 is clogged. The water level of the drain water in the water receiving part 24 may rise abnormally. In such a case, it is possible to prevent the drain water in the water receiving portion 24 from overflowing from the second wetting portion 36 and to abnormally increase the drain water level of the upstream drain pan 21 beyond the second wetting portion 36. In the case of removing the lump as described above, it is preferable to remove the pre-stage drain pan 21 from the pan accommodating portion 17 in the manner described above and periodically wash with water.

  According to the commercial refrigerator configured as described above, the lower part of the fin 7a of the condenser 7 is immersed in the drain water in the evaporation pan 25, and the drain water is warmed by the heat of the fin 7a to promote evaporation. it can. At the same time, the water surface of the drain water can be warmed by the radiant heat of the fins 7a or the heat exchange air that has passed through the condenser 7 to promote evaporation, so that a larger amount of drain water can be effectively evaporated. Further, a next-stage drain pan 23 is provided in addition to the previous-stage drain pan 21, and when the drain water in the previous-stage drain pan 21 is about to overflow, the second drainage section 36 overflows into the water collecting section 26, and the funnel 41 and Since the overflow water flows down to the next-stage drain pan 23 via the drain pipe 22, it is possible to reliably prevent the drain water from overflowing from the previous-stage drain pan 21 to the floor of the showcase. Furthermore, even when a lump is formed on the gently inclined wall 28 and the drain water that is about to flow down from the water receiving unit 24 to the evaporation pan unit 25 is blocked by the lump, the drain water in the water receiving unit 24 is drained. By overflowing from the second dam 36, it is possible to prevent the drain water level of the upstream drain pan 21 from rising abnormally beyond the second dam 36 and leaking water.

  The front-stage drain pan 21 in use is supported by the engagement hole 45 and the unit base 14, and the stopper claw 55 engages with the stopper window 52 to restrict the forward movement of the front-stage drain pan 21. Therefore, after removing the drain pipe 20 from the pipe holder 33, the left and right elastic arms 53 are operated to release the engagement between the stopper claws 55 and the stopper window 52, and the former drain pan 21 is simply pulled out to accommodate the pan. It can be easily removed from the part 17. Further, simply by inserting the front-stage drain pan 21 into the pan accommodating portion 17, the state can be switched from the attachment / detachment position to the evaporation position, and can be easily returned to the use state. As described above, if the front-stage drain pan 21 is easily attached and detached, the inspection and washing with water can be easily performed, so that maintenance for removing clogged dust can be promoted.

  In the above embodiment, the pan mounting structure is configured by the engagement hole 45 provided in the condensing unit casing 13 and the cam body 46 provided in the upstream drain pan 21, but this is not necessary. For example, the cam body 46 that is inclined forward and downward is fixed to the rear portion of the slide area of the evaporation pan portion 25, and an engagement groove (engagement body) 45 that slides relative to the cam body 46 is provided in the vicinity of the rear wall of the evaporation pan portion 25. Thus, when the front-stage drain pan 21 is inserted into and attached to the pan accommodating portion 17, the engagement groove 45 rises along the cam body 46, whereby the rear portion of the front-stage drain pan 21 can be switched to the evaporation position. In this case, the cam body 46 may be fixed to either the condensing unit casing 13 or the unit base 14. Alternatively, the left and right walls of the front portion of the evaporation pan portion 25 may be hooked to the condensing portion casing 13 to hold the front portion of the front drain pan 21 at the evaporation position.

  The commercial refrigerator of the present invention may be an open showcase or an undercounter type refrigerator in addition to the reach-in type showcase.

1 Refrigerator body (showcase body)
2 Refrigerating room 3 Machine room 6 Compressor 7 Condenser 7 a Fin 8 Blower fan 13 Condensing part casing 14 Unit base 20 Drain pipe 21 Pre-stage drain pan 22 Lower drain pipe 23 Next-stage drain pan 24 Receiving part 25 Evaporating pan part 26 Water collecting part 27 First weir 36 Second weir 45 Engagement body (engagement hole)
46 Cam body 48 Inclined cam surface 52 Stopper body (stopper window)
53 Elastic Arm

Claims (8)

The compressor (6), the plate fin type condenser (7), and the blower fan (8) are accommodated in the machine room (3) of the refrigerator main body (1), and the lower side of the condenser (7). drain water processing structure for transpiration process drain water discharged from the refrigerator body of the refrigerating compartment (2) is a commercial refrigerator that provided on,
The drain water treatment structure is disposed below the upstream drain pan (21) for receiving drain water guided by the drain pipe (20) from the refrigerator compartment, and overflows from the upstream drain pan (21). receiving the overflow water to have a next-stage drain pan (23),
The upstream drain pan (21) includes a water receiving part (24) for storing drain water guided down by the drain pipe (20), and an evaporation pan part (25) for storing drain water overflowing from the water receiving part (24). When provided with a first weir portion provided between the water receiving portion (24) and the evaporation pan portion (25) and (27),
The evaporation pan part (25) has four side walls, front, rear, left and right.
Water receiving section (24) is issued Zhang from either side wall of the left and right evaporation pan portion (25) are projecting out of the outline of the condenser in a plan view (7),
The evaporation pan section (25) is arranged on the lower surface side of the condenser (7), and in the state where drain water is stored in the evaporation pan section (25), the lower part of the fin (7a) of the condenser (7) is Soaked in drain water,
The rear wall of the water receiving part (24) is provided with a second weir part (36) for allowing the overflow water to flow down to the next-stage drain pan (23), and the outer surface of the second weir part (36) receives the overflow water. The water collecting part (26) is protrudingly installed,
In the abnormal level state level of the drain water exceeds a first weir portion (27) of the water receiving portion (24) is configured to flow down the overflow water the second weir portion from (36) to the next drain pan (23) A commercial refrigerator characterized by that. The lower part of the drain pipe (20) extending from the inner bottom wall of the refrigerator body is fixed and held by a pipe holder (33) provided on the peripheral wall of the water receiving part (24),
The drain pipe (20) and the water receiving part (24) form a trap, with the outlet of the drain pipe (20) facing below the water level defined by the first weir part (27). The commercial refrigerator described. The first weir part (27) includes a gently inclined wall (28) that gently inclines from the bottom wall of the water receiving part (24) toward the first weir part (27),
The commercial refrigerator according to claim 1 or 2, wherein the downward impact of the drain water flowing down from the drain pipe (20) is mitigated by the gently inclined wall (28) . There is a pan housing part (17) for inserting / removing a front drain pan (21) between a unit base (14) disposed on the bottom wall of the machine room (3) and a condenser (7) fixed to the base (14). Provided,
The front-stage drain pan (21) is slidably attached to the pan accommodating portion (17) so that the bottom wall of the evaporation pan portion (25) is received by the upper surface of the unit base (14), and the evaporation pan portion (25). The bottom wall can be displaced up and down between the evaporation position facing the lower part of the fin (7a) by floating away from the unit base (14),
A pan mounting structure is provided at the rear part of the front-stage drain pan (21) so that the front-stage drain pan (21) is vertically displaced between the attachment / detachment position and the evaporation position in conjunction with the slide attachment / detachment operation of the front-stage drain pan (21). The commercial refrigerator according to any one of claims 1 to 3. The pan mounting structure includes a cam body (46) and an engagement body (45) that slides relative to the cam body (46).
One of the cam body (46) and the engagement body (45) is provided in the evaporation pan section (25), and the other is fixed to the rear portion of the slide area of the evaporation pan section (25),
The cam body (46) and the engaging body (45) slide relative to each other when the front-stage drain pan (21) is inserted into the pan housing part (17) from the front, and the rear portion of the front-stage drain pan (21) is evaporated. The commercial refrigerator according to claim 4 , wherein the position of the refrigerator can be maintained . The condenser (7) is supported by a condenser casing (13) fixed to the unit base (14);
Stopper bodies (52) are formed on the left and right walls of the condensing section casing (13), and elastic arms (53) that engage and disengage from the stopper bodies (52) are provided on the outer surfaces of the left and right walls of the front-stage drain pan (21).
In a state of holding front drain pan (21) to the evaporation position, and resilient arms (53) engages with the stopper member (52), the front drain pan (21) according to claim 4 regulates the withdrawal or 5, The commercial refrigerator described. A funnel body (41) for receiving overflow water flowing down from the water collection section (26) on the unit base (14) facing the lower surface of the water collection section (26), and overflow water received by the funnel body (41) Is provided with a lower drain pipe (22) that guides flow toward the next drain pan (23),
The next-stage drain pan (23) disposed below the bottom wall of the machine room (3) is supported by a slide frame (40) fixed to the lower surface of the bottom wall of the machine room (3) so as to be slidable back and forth and can be taken in and out. It is provided in
The commercial refrigerator according to any one of claims 4 to 6, wherein a lower end of the lower drain pipe (22) is positioned above a loading / unloading locus of the next-stage drain pan (23) . The funnel body (41) is arranged below the trajectory of the front drain pan (21),
The commercial refrigerator according to claim 7 , wherein the water collecting section (26) and the funnel body (41) face each other vertically with the front-stage drain pan (21) held in the evaporation position .

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