JPH05157441A - Defrosted water discharge structure for refrigerator - Google Patents

Abstract

PURPOSE:To obtain a defrosted water discharge structure of a refrigerator which is simple in structure and easy to handle and capable of cleaning the internal parts including the discharge of drain deposited in a trap. CONSTITUTION:Defrosted water discharge structure is provided with a drain tank 80 which faces the outlet of a drain port 45b of a cooler chamber 47 and a division pipe which extends horizontally from its lower part. The division pipe comprises a coupling pipe 81 which can be separated in a horizontal direction and a fit-in pipe 83. The coupling pipe, which is slanted slightly upward, is provided with a first shielding wall 81a projected on the upper part of the inner surface while the fit-in pipe (connection elbow) is provided with a second shielding wall 83c, thereby forming a trap which can be divided freely. The defrosted water generated in the cooler chamber is received in the drain tank and flows into the division pipe so that a specified amount of water is stored in the trap. When the fit-in pipe is pulled out longitudinally, the both pipes are divided so that the drain in the trap may flow out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating apparatus such as a refrigerating showcase or a refrigerator, and more particularly to a structure for discharging defrosted water.

[0002]

2. Description of the Related Art In a refrigerating apparatus, air in a space for storing refrigerated items or air around it is cooled. However, since frost is generated as a result of cooling, defrosting by heating is performed. A trap is usually provided in the defrosting water and the drainage of the moisture generated by the heating. As the structure of the discharge pipe, first, there is an integrally molded pipe system having a U-shaped portion (Japanese Utility Model Laid-Open Nos. 1-123183 and 1-112384). In this method, defrosting drainage is stored in a U-shaped portion to form a trap.

As another example, there is a system in which the lower end of the defrosting drainage pipe is inserted into a drainage or drain tank having an overflow pipe (actual opening 1-123).
184). In this method, the defrosting drainage is stored up to the overflow surface in the drain tank, and the lower end of the drainage downcomer is inserted into the stored drainage to form a trap.

In any case, since a certain height is required to form the trap, in a horizontally long refrigerating showcase generally called a "net case", the refrigerating apparatus is limited due to space limitations. It is also practiced to provide only a cylindrical or prismatic drain tank in the main body and to install the trap outside.

FIG. 9 shows a cross section of a typical example of the above-mentioned neta case, in which a cooler chamber 2 is provided in a machine room 1 at the bottom, and a cooler room 2 is provided at the bottom of a drainage port 3 at the bottom thereof. There is a drainage tank 4 that receives frost water. In the display room 6 whose front surface is partitioned by the inner windshield 5a and the outer multi-layer glass 5b,
Items to be displayed, which are fresh foods, are stored. The cooler 7 cools the air in the cooler chamber 2 and the cold air circulation passage,
Frost is generated, and the defrosted water passes through the drainage port 3, flows into the drainage tank 4, and flows out from the drainage pipe 8 to the external drainage system. Reference numeral 9 is a condenser.

[0006]

In the conventional apparatus described above, which uses an integrally molded pipe having a U-shaped portion, it is difficult to manufacture because of the complicated structure, and the blow molding method must be used. Inevitably, the cost becomes high, and it is difficult to discharge the water accumulated in the U-shaped portion, and the accumulated water is easily decomposed to cause a bad odor.

In another conventional apparatus having an overflow tank, the problem of manufacturability is considerably improved, but drainage of drainage in the trap and internal cleaning are very difficult.
The problems of decay and foul smell still remain.

Further, in the case where the trap is not provided in the refrigerating apparatus main body, since the trap is installed in a separate place, various restrictions occur when the refrigerating apparatus is actually installed in the place of use, and the cost easily increases, and the tank It takes time to clean the.

Since the conventional drainage tank shown in FIG. 9 has a cylindrical shape and a wide bottom surface, the trap effect does not occur unless a large amount of water enters, and it takes time until a large amount of water accumulates. In other words, water is likely to be putrefaction, which easily causes a bad odor. Moreover, since the cross section of the drain tank and the cross section of the drain pipe change suddenly, the bottom of the drain tank cannot be cleaned from the drain pipe side, and it takes time to drain the water from the drain tank, making internal cleaning difficult. there were. Furthermore, since the inside of the machine room is apt to become hot except for the cooler room, there is a problem such that the cooling efficiency is lowered and dew on the outside of the drain tank is caused.

Therefore, a first object of the present invention is to provide a defrosting water discharging structure for a refrigerating apparatus, which has a simple structure and is easy to manufacture and can easily clean the inside including discharging the water accumulated in the trap. That is.

A second object of the present invention is that the structure is simple, the manufacturing is easy, the stored drainage of the trap is easily removed, and the internal cleaning is easy. It is an object of the present invention to provide a refrigerating device having a defrosted water discharge part that can be easily connected.

Further, a third object of the present invention is that the structure is simple and the manufacturing is easy, the internal water is easily discharged and the internal cleaning is easy, and the thermal influence from the outside is less likely to occur. It is an object of the present invention to provide a defrost water drainage structure having a shape in which a trap effect is likely to occur even if the amount of water is small.

[0013]

Means for Solving the Problems and Actions of the Invention According to Claims 1 and 2 , In order to achieve the above-mentioned first object, in the inventions according to Claims 1 and 2, the outlet of the drain port of the cooler chamber The defrosting water drainage structure is composed of a drainage tank installed facing the above and a split pipe extending horizontally from the lower part. The split pipe is composed of a coupling pipe that can be split in the axial direction, that is, the horizontal direction, and a fitting pipe, and the coupling pipe includes a first upper shielding wall that is provided so as to project from the inner ceiling. ,
A second lower shielding wall that projects from the bottom surface of the inner surface forms a separable trap.

The defrost water generated in the cooler chamber is received by the drain tank, flows into the split pipe, and the required amount is stored in the trap. When the fitting pipe is pulled out in the axial direction, both pipes are divided and the drainage in the trap can flow out. The drainage is received by an appropriate container, the insides of the coupling pipe and the fitting pipe are exposed to the outside, and cleaning water and a cleaning tool are inserted for cleaning and cleaning.

The first purpose of the invention described above according to claim 3, according to the present invention, in the refrigeration apparatus having a condenser chamber in a machine room, waste water tank is provided facing the outlet of the drain outlet of the cooling chamber bottom It is also achieved by forming a defrosting water discharge structure in which a joint pipe extends horizontally from a lower portion of the joint pipe so as to be inclined slightly upward and the fitting pipe is detachably fitted to the tip of the joint pipe. .. An upper shield wall is formed on the inner ceiling of the base end portion of the coupling pipe, while a lower shield wall is formed on the inner bottom surface of the fitting pipe to form a trap as a whole.

The defrost water generated in the cooler chamber flows out from the drain port, enters the drain tank, and is discharged through the connecting pipe and the fitting pipe. A certain amount of defrost water is stored in the trap formed in both pipes, and cool air between the cooler chamber and the outside,
Block other distribution. When the fitting pipes are pulled out, the insides of both pipes and the inside of the drain tank are exposed to the outside and cleaned with a normal cleaning tool.

In order to achieve the claims 4 and invention the aforementioned second object of 5, according to the present invention, in the refrigeration apparatus having a condenser chamber in the machine room, facing the outlet of the discharge port of the cooler compartment bottom A drainage tank is provided in the drainage tank. A connecting pipe extends from the lower part of the drainage tank in a substantially horizontal direction, and a connection elbow is detachably and rotatably fitted to the tip of the connecting pipe so that a defrosted water discharge portion is formed. Is configured. An upper shield wall is formed on the inner surface of the base end of the coupling pipe, and a lower shield dam is formed at the end of the horizontal portion of the connecting elbow to form a separable trap. The lower shield dam wall has a U-shaped opening. Is defined.

The defrost water in the cooler room enters the drain tank,
From there it is discharged via a connecting pipe and a connecting elbow to an external drainage system, for example a drain hose. A certain amount of waste water is stored in a trap formed in the connecting pipe and the connecting elbow to block the leakage of cold air and the invasion of outside air and insects. Even if the connecting elbow is rotated around the horizontal portion fitted to the connecting pipe, the lower shield weir wall having the U-shaped opening always acts as the lower shield wall of the trap to maintain the trap.

[0019] To achieve the third object of the invention described above according to claim 6, according to the present invention,
In a refrigerating machine having a machine room at the bottom and a storage room at the top, a drainage tank for receiving defrost water is provided at the bottom of the machine room facing the outlet of the cooling room. A skirt is formed in the lower part of the drain tank, and the bottom surface surrounded by this part is partially inclined like a funnel and connects to the central trough, from which the drain pipe is continuously extended in the horizontal direction. Extends to.

The defrost water in the cooler chamber flows into the drain tank through the drain port. The defrosted water is guided by the inclined surface of the bottom, collected in the gutter-shaped portion, and further flows out from the drainage pipe to the external drainage system. External heat is shielded by the skirt portion and the air layer between the skirt portion and the bottom surface, and heat transfer to water in the drain tank is blocked.

[0021]

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

1 and 2 are a front perspective view and a rear perspective view, respectively, of a refrigerating showcase (refrigerating apparatus) 10 according to this embodiment. The refrigerated showcase 10 shown in the figure is horizontally long and relatively low in height, and is used for displaying fresh food such as sushi material at a sushi restaurant, for example, and is also called a material case.

In the figure, the refrigerated showcase 10 comprises a display room 20 whose front part is made of glass, and a machine room 40 located below the display room 20. The rear surface of the display room 20 includes two sets of sliding doors 21, and the machine room 40 includes a front cover 41 and a rear cover 42, which will be described in detail later. Further, the tip of the drainage pipe 43 extending from the storage space (not shown) of the display object in the display room 20 projects from the rear cover 42.

As clearly shown in FIG. 3, which is a vertical longitudinal section taken along line III-III of FIG. 1, the display room 20 has a double structure. That is, the inner box 28 having the bottom plate 23, the pair of side plates 25, and the top plate 27 is surrounded by the outer box 31, and the cold air circulation passage 33 is defined between the both boxes. The bottom plate of the outer box 31 serves as a boundary with the machine room 40.
The inner box 2 formed of 5 and having a heat insulating member 29 attached thereto
The bottom outward path 33a is defined in cooperation with the bottom plate 23 of FIG. Further, the heat insulating structure 35 defines a bottom return path 33b between the heat insulating structure 35 and the bottom plate 23 to which the heat insulating member 29 is not attached, on the left side of FIG. The bottom outward path 33a and the bottom return path 33b form a part of the aforementioned cold air circulation path 33.

Next, the structure of the machine room 40 will be described with reference to FIG. 3 and FIG. 4 showing a horizontal section taken along the line IV-IV.
An integrally formed heat insulating block 45 having an opening aligned with the opening of the heat insulating structure 35 defines a cooler chamber 47. In the cooler chamber 47, a cooling fan 49 is provided on the side of the bottom return path 33, and a cooler 51 is provided on the side of the bottom outward path 33a, and the support frame 4 for the cooling fan 49 is provided.
Wind direction guides 53a and 53b extend from both sides of 9a to the end plate 51a of the cooler 51. Bottom outward route 33a
Also on the outlet side of the cooler 51 facing the other side, another cool air guide 55
a and 55b are provided.

A heat insulating member 29 attached to the lower surface of the bottom plate 23.
Extends to directly above the cooler 51, and its lower surface and the cooler 51
A cooling plate 57 made of a good heat conductive material is sandwiched between them. The cooling plate 57 extends directly above the bottom return passage 33b and is attached to the lower surface of the bottom plate 23, and cooperates with a horizontal partition plate 59 immediately above the bottom return passage 33b to define an auxiliary cold air circulation passage 61.

The cooling fan 49 circulates air by the connection between the cold air circulation passage 33 and the cooler chamber 47 as described above. The cooling fan 49 passes air through the cooler 51, and the air cooled here, that is, the cool air, is cooled by the cool air guides 55a, 5a.
Guided by 5b, it enters the bottom outward path 33a and flows through the cold air circulation path 33. At this time, the inner box 28 and the inside thereof are cooled. The outer box 31 prevents heat from entering from the outside. The cold air having a slight temperature rise returns to the cooler chamber 47 from the bottom return path 33b, but the inner box 28 near this cools the auxiliary cold air circulation passage 61.
It is cooled by the cool air inside and the cooling plate 57.

In FIG. 3 and FIG. 4, the refrigerant compressor 63
Is provided outside the cooler chamber 47, and the condensing fan 65
Is arranged side by side with the compressor 63 so as to be rotatable around a vertical axis. FIG. 5 shows a vertical cross section of the refrigerating showcase 10 taken along the line VV in FIG. 4, but as is apparent from this figure, the condenser 67 is arranged below the cooler chamber 47. .. The condensing fan 65 takes in the air around the compressor 63 and sends the cooling air to the condenser 67 below.

FIG. 5 also shows a cross section of the display room 20. The windshield 37 forms a part of the inner box 28, the multi-layer windshield 39 forms a part of the outer box 31, and a front passage 33c is defined between the windshields 37 and 39. The bottom plate 23 of the inner box 28 is inclined so that the rear surface side is in a high position, and is fixed to the upper surface of the heat insulating structure 35 via the support members 23a and 23b.

An elastic pad 71 is attached to the lower surface of the bottom plate 69 of the machine room 40 to facilitate the installation, and the heat insulating block 45 is fixed to the upper horizontal plate 73 of the condenser 67 via a heat insulating pad 75. ing. Inner upper surface (bottom surface of cooler chamber) 45 of a heat insulating block 45 having a built-in cooler 51
A is inclined so that the rear surface side is lower than the bottom plate 23, and a through hole 45b is formed in the vicinity of the lowermost end thereof. The through-hole 45b is a drain port for collecting and discharging defrost water of frost and other moisture generated when the air is cooled by the cooler 51.

An annular recess is formed in the lower surface of the heat insulating block 45 so as to surround the through hole 45b, and a seal member 77 is fitted therein. The upper end surface of the drain tank 80 fixed to the upper surface of the bottom plate 69, that is, the drain tank 80, is in close contact with the lower surface of the seal member 77. From the lower end of the drain tank 80,
A joint pipe 81 forming a split pipe extends below the rear cover 42. The coupling pipe 81 is formed integrally with the drain tank 80, and is gently inclined so that it becomes higher toward the tip, but the shielding wall 81a projects downward from above the inner surface of the connection portion to the drain tank 80. An opening 81b is formed therebelow, so that the inside of the drain tank 80 and the inside of the coupling pipe 81 communicate with each other.

Two annular projections are integrally formed at the tip of the connecting pipe 81, and the fitting pipe, that is, the large-diameter end 83a of the connecting elbow 83 is detachably fitted therein. The connecting elbow 83 constitutes a split pipe together with the connecting pipe 81. The other end of the connecting elbow 83 is a small diameter end 83b formed with two annular projections, and a discharge hose 85 is fitted to this. The shield wall 8 faces the opening of the large-diameter end 83a from the inner bottom surface of the bent portion of the connecting elbow 83.
3c is formed so as to stand upright, and an opening 83d is formed in a portion above the shielding wall 83c.

The shape seen from the direction of the arrow VI is shown in FIG. 6, but the opening 83d is substantially U-shaped and is dimensioned so that the inner end of the opening 83d is higher than the lower end of the shielding wall 81a. It can be seen that a trap is formed between the two. FIG. 7 shows the shape seen from the direction of arrow VII in FIG. As described above, since the opening 83d is substantially U-shaped and the inner end thereof is an arc, the connecting elbow 83
Even if is rotated 90 degrees from the illustrated vertical position to a horizontal position, the lower end of the opening 83d is always higher than the lower end of the shielding wall 81a.

In FIG. 8 showing a partial cross section taken along the line VIII-VIII of FIG. 5, a gutter-shaped portion 80a is formed on the bottom surface of the drain tank 80 so as to communicate with the coupling pipe 81, and a pair of tapered surfaces are formed from the upper end thereof. 80b extends toward the body of the drain tank 80. A body portion below the tapered surface 80b serves as a skirt portion 80c, and a concave portion 80d is formed between the skirt portion 80c and the tapered surface 80b and the trough portion 80a. Further, in the trough portion 80a, the projection 80
e is formed and serves as a guide when the heat insulating block 45 is assembled. Since the protrusion 80e is a mark, it may be formed as a recess.

In the above structure, the defrost water generated by heating the frost generated when the cooler 51 cools the air is
It falls on the bottom surface 45a of the cooler chamber 47 defined by the heat insulating block 45, flows down there, and falls from the through hole 45b to the drain tank 80. By the action of the shielding walls 81a and 83c, a trap is formed in the coupling pipe 81, and the invasion of insects and the leakage of cold air from the drain hose 85 side are prevented. If the drainage hose 85 cannot be extended vertically downward due to the location of the refrigerated showcase 10, the connection elbow 8
3 is rotated around the axis of the coupling pipe 81, and the drain hose 8
It is sufficient to incline 5 in the lateral direction.

When the connecting elbow 83 is pulled backward (to the right in FIG. 5), the trap is eliminated. If a cleaning brush (not shown) is inserted from the tip of the connecting pipe 81,
Since it reaches the trough portion 80a of the drain tank 80, the inside of the drain tank 80 can be easily cleaned.

[0037]

According to the present invention of claims 1 and 2 , since the trap is composed of the separable connecting pipe and fitting pipe, if these are divided,
The water accumulated in the trap and the inside can be easily cleaned. Further, the connecting pipe and the fitting pipe can be manufactured separately, and the shapes are simple, so that the manufacturing is easy and the cost is low. Particularly, since the coupling pipe and the fitting pipe have no undercut portion, it is extremely easy to form and manufacture them.

According to the present invention of claim 3, the connecting pipe extending from the drain tank cooperates with the fitting pipe to form a separable trap, and the connecting pipe is gently inclined upward. Therefore, since the lower shielding wall of the fitting pipe can be made smaller and the flow path can be made larger, manufacturing is facilitated and internal cleaning including discharge of stored drainage is also facilitated. Further, since the coupling pipe is inclined as described above, it is positioned higher than the bottom surface of the drain tank, and the drain hose can be easily attached to the fitting pipe.

According to the present invention of claims 4 and 5, since the connecting pipe and the connecting elbow are separably fitted to each other to form a trap, the stored drainage and internal cleaning can be easily performed. In addition to being able to manufacture, they can be manufactured separately, so that they are extremely easy to manufacture. Further, since the connecting elbow can maintain the trap even when it is rotated from the vertical lower side to the horizontal position, it can be easily connected to the drain hose or the like of the external drainage system, and there is no restriction on the installation of the refrigeration system.

According to the invention the invention of claim 6, in the center of the bottom of the drainage tank, troughs are formed, so that continuous with the drain pipe, from the drain pipe side, if you put a tool such as a cleaning brush Easy internal cleaning. Further, since the bottom surface around the gutter-shaped portion is inclined like a funnel, defrosting water easily flows into the gutter-shaped portion, and a trap can be easily formed even with a small amount of defrosting water. Furthermore, since the skirt portion surrounds the bottom surface apart, it is possible to effectively prevent the transfer of external heat and prevent the cooling efficiency from decreasing.

[Brief description of drawings]

FIG. 1 is a front perspective view of a refrigerated showcase according to an embodiment of the present invention.

2 is a rear perspective view of the refrigerated showcase of FIG. 1. FIG.

FIG. 3 is a vertical vertical sectional view taken along the line III-III in FIG.

FIG. 4 is a horizontal sectional view taken along line IV-IV in FIG.

5 is a vertical cross-sectional view taken along the line VV of FIG. 4 with an upper half portion omitted.

FIG. 6 is a partially enlarged view seen from the direction of arrow VI in FIG.

FIG. 7 is a partially enlarged view seen from the VII direction in FIG.

8 is a partial cross-sectional view taken along the line VIII-VIII of FIG.

FIG. 9 is a vertical cross-sectional view showing the inside of a mechanical chamber of a conventional refrigeration system.

[Explanation of symbols]

10 Refrigerator Showcase (Refrigerator) 20 Display Room (Storage Room) 40 Machine Room 45 Insulation Block 45a Bottom of Cooler Room (Top of Heat Insulation Block) 45b Drain Port (Penetration Port) 47 Cooler Room 51 Cooler 69 Machine Room Bottom part (bottom plate) 80 drainage tank (drain tank) 80a gutter 80b inclined surface 80c skirt surface 81 coupling pipe (drainage pipe) 81a first shielding wall (upper shielding wall) 81b opening 83 fitting pipe (connecting elbow) 83c Second shielding wall (lower shielding wall, lower shielding weir wall) 83d Opening

 ─────────────────────────────────────────────────── ─── Continuation of the front page (31) Number of priority claim No. Hei 3-31019 (32) Priority date Hei 3 (1991) May 7 (33) Priority claim country Japan (JP)

Claims (6)

[Claims] 1. A refrigerating apparatus having a cooler chamber containing a cooler inside a machine room, wherein a drainage tank is provided below a drainage port on a bottom surface of the cooler chamber and a horizontal direction from a lower portion of the drainage tank. A split pipe extending to the inner surface of the inner pipe, the split pipe having a first shielding wall projecting from the inner ceiling and a second shielding wall projecting from the inner bottom surface. A defrosting water discharge structure for a refrigerating machine, comprising a pipe, and the first and second shielding walls cooperate to form a trap. 2. The defrosted water discharge structure for a refrigerating machine according to claim 1, wherein the body of the drainage tank is extended downward to form the first shielding wall. 3. A refrigerating device having a cooler chamber having a built-in cooler inside a machine room, wherein a drainage tank is provided facing a drainage port on a bottom surface of the cooler chamber, and a lower part of the drainage tank is located above. A coupling pipe extending in a horizontal direction with an inclination to, and a fitting pipe fitted to the coupling pipe, and an upper shielding wall provided on an inner ceiling of the coupling pipe,
A defrosting water discharge structure for a refrigerating machine, characterized in that the fitting pipe cooperates with a lower shield wall provided on the bottom surface of the inner surface to form a separable trap. 4. A refrigerating apparatus having a cooler chamber containing a cooler inside a machine chamber, wherein a drainage tank provided below a drainage port on the bottom of the cooler chamber and a lower part of the drainage tank are substantially provided. A defrost water discharge part is composed of a horizontally extending connecting pipe and a rotatable connecting elbow that is detachably fitted to the tip of the connecting pipe, and is provided on the inner surface of the connecting pipe near the drain tank. A refrigerating machine characterized in that the upper shield wall and the lower shield weir wall provided in the horizontal part of the connecting elbow and defining a U-shaped opening cooperate to form a trap. 5. The refrigerating apparatus according to claim 4, wherein the lower shield dam wall is formed as an extension of a vertical pipe wall of the connecting elbow. 6. A refrigerating apparatus having a machine room including a cooler room at a lower part and a storage room for storing an object to be stored at an upper part, wherein a drainage tank facing an outlet of a drainage port of the cooler room is provided in the machine. Provided at the bottom of the chamber, a drain pipe is provided extending horizontally from the lower part of the drain tank, and a gutter-shaped part connected to the inlet of the drain pipe on the bottom of the drain tank and the gutter-shaped part from the gutter-shaped part to the trunk wall. A defrosted water discharge structure for a refrigerating machine, wherein a skirt portion that forms an inclined surface and surrounds the bottom surface from the outside is formed in a lower portion of the drainage tank.