JPH053875U - Drainage trap device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a drain port trap device that reliably prevents outflow of cold air through a drain pipe and invasion of odor when drainage is accumulated at the bottom of a storage or the like or when there is little drainage. To do. [Structure] A drainage pipe 27 fixed to a bottom 24 of a storage or the like
Has an inner peripheral wall 28, an annular bottom wall 29 extending inward, a rising cylinder wall 30, and a drainage channel 36 extending downward,
A plurality of protrusions 32 are provided on the cylinder wall 30. The lid member 40 that covers the drainage pipe 27 has an outer peripheral wall 42 that hangs between the inner peripheral wall 28 and the cylindrical wall 30, and a recess 43 on the lower surface. When the protrusion 32 is fitted into the recess 43, the lid member 40 is closed. The lower surface of the member 40 comes into close contact with the cylindrical wall 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drain trap device for a storage or the like for refrigerating fresh food products and the like.

[0002]

[Prior Art]

 In large-scale storage such as large-scale refrigeration of fresh foods with high water content, it is necessary to smoothly remove water from the storage as water drips and accumulates on the bottom of the storage. In addition, it is necessary to wash the inside of the storage to keep it clean, and a drainage system is installed at the bottom of the storage to drain these water.

As shown in FIG. 7 as an example, a conventional drainage device has a storage space formed by filling a space between an inner box 1 and an outer box 2 with a heat insulating material 3 of polyurethane foam. The annular rim 5 rising from the box 2 is fitted into the annular groove 7 on the lower surface of the drain pipe 6, and the annular rim 9 hanging from the inner box 1 is fitted into the annular stepped portion 8 formed at the upper end of the drain pipe 6. In rare cases, a circular lid 11 is placed on the shoulder 10 of the annular stepped portion 8 to close the drainage channel 12 in the drainage pipe 6, and cool air may flow out of the storage through the drainage channel 12 or from the outside. The odor is prevented from entering the storage through the drainage channel 12.

However, in this case, the water in the storage is not discharged and stays in the bottom 4, which is not hygienic, and the lid 11 is opened every time water is stored in the storage, and the drainage channel 12 It was actually very troublesome to drain water through. In order to avoid the above-mentioned problem, in the case where the lid 11 is provided with some small communication holes, cold air flows out from the inside of the storage through the drainage channel 12, the temperature inside the storage rises, and the extra cold is stored in the refrigerator. However, it is inevitable that odor will intrude into the storage from the outside through the drainage channel 12.

Further, as described in Japanese Utility Model Laid-Open No. 63-40783, the upper part of the drainage pipe and the peripheral edge of the lid have a nested structure, and water is retained in this part to prevent the outflow of cold air. However, there is a gap, and when there is little water that accumulates, or in a storage room where water does not stay much at the bottom because there is no water dripping from the stored items, a gap can be created and the above objective can be achieved. In addition, there was a problem in that the water could not be stored in the bottom of the storage, and the water that had been retained to prevent the outflow of cold air would rot and become unsanitary.

[0006]

[Problems to be solved by the device]

 The present invention intends to provide a drain trap device that always reliably prevents outflow of cold air and invasion of odor through a drain pipe when waste water is accumulated at the bottom of a storage cabinet or when the waste water is little. Is.

[0007]

[Means for Solving the Problems]

 Therefore, the drain trap device according to the present invention has a drain pipe attached to the bottom of a storage or the like and a lid member for the drain pipe, and the drain pipe is an inner peripheral wall and an inward direction from the inner peripheral wall. An annular bottom wall that extends, a tubular wall that rises from the annular bottom wall, a drainage channel that extends downward inside the tubular wall, and a plurality of protrusions that are provided at the upper end of the tubular wall, and the lid member is used to drain the drainage water. The pipe has a peripheral wall that hangs between the inner peripheral wall of the pipe and the cylindrical wall, and a recess provided on the lower surface into which the projection of the drainage pipe can be fitted, and the projection of the drainage pipe is fitted into the recess of the lid member. When not present, a gap is formed between the annular bottom wall of the drainage pipe and the lower end of the peripheral wall of the lid member, and when the projection of the drainage pipe is fitted in the recess of the lid member, the drainage is performed by the lid member. The drainage channel of the pipe is designed to be closed.

[0008]

[Action]

 Therefore, when the lid member is placed on the drain pipe, if the projection on the upper end of the drain pipe cylinder wall is not fitted into the recess on the lower surface of the lid member, the protrusion causes a gap between the lower surface of the lid member and the upper end of the drain pipe cylinder wall. Since a gap is formed in the drain pipe and a gap is formed between the annular bottom wall of the drain pipe and the lower end of the peripheral wall of the lid member, the water flowing into the drain pipe is discharged downward through the drain passage through the gap. In addition, the peripheral wall of the lid member sinks into the water stored in the annular recess formed by the inner peripheral wall of the drain pipe, the annular bottom wall, and the outer periphery of the cylindrical wall, and the cold air flows out through the drain pipe and odor Intrusion is prevented. On the other hand, when the projection on the upper end of the drain pipe cylinder wall is fitted into the recess on the lower surface of the lid member, the drain member drain passage can be closed by the lid member, so that cold air and odor can also be prevented from flowing out through the drain pipe. It

[0009]

【Example】

 An embodiment of the present invention shown in FIGS. 1 to 6 will be specifically described below. As shown in FIGS. 2 and 3, at the bottom portion 24 of the storage formed by filling the inner box 21 and the outer box 22 with the heat insulating material 23 of polyurethane foam, the stand up from the outer box 22. The ring-shaped rim 25 and the ring-shaped rim 26 hanging from the inner box 21 are engaged with the upper and lower ends of the inner peripheral wall 28 of the drain pipe 27, and the drain pipe 27 is fixed. The drain pipe 27 is provided with an annular bottom wall 29 that inclines slightly downward from the inner peripheral wall 28 of the drain pipe 27. The tubular wall 30 rises from the annular bottom wall 29, and the inner peripheral wall 28 and the annular bottom wall 29. An annular recess 31 is formed by the outer periphery of the cylinder wall 30. Four protrusions 32 are provided at equal intervals on the upper end of the cylinder wall 30, and notches 33 reaching the annular bottom wall 29 are provided on the outer peripheral surface of the cylinder wall 30 between the protrusions 32. , The thin portion 34 is configured. A water conduit 35 hangs from the inner end of the annular bottom wall 29 to form a drainage channel 36.

As shown in FIGS. 4 and 5, the lid member 40 of the drain pipe 27 is provided with a handle 41 on the upper surface thereof and an outer peripheral wall 42 slightly shorter than the height of the drain pipe cylinder wall 30 on the outer periphery. On the lower surface, recesses 43 deeper than the height of the projections 32 are provided at the portions corresponding to the respective projections 32 on the drain pipe cylinder wall, and a large number of circular recesses 44 are formed on the lower surface inside the recesses 43. The thin-walled portion 45 is provided.

In FIG. 1, when the lid member 40 is placed on the drain pipe 27, each protrusion 32 on the drain pipe cylinder wall abuts the lower surface of the lid member 40 and is fitted into the recess 43 of the lid member 40. Otherwise, there is a gap between the lower surface of the lid member 40 and the upper surface of the drain pipe tube wall 30 by the height of the protrusion 32, and between the lower end of the lid member outer peripheral wall 42 and the drain pipe annular bottom wall 29. Since there is a gap in the drainage pipe, if the water level in the drainage pipe annular recess 31 inside the lid member outer peripheral wall 42 exceeds the height of the drainage pipe wall 30, the water accumulated in the bottom 24 of the storage will be drained. It is possible to flow out from the annular recess 31 through both the gaps and through the drainage channel 36 downward. At this time, since the lower end of the lid member outer peripheral wall 42 is immersed in the stored water 50 in the drain pipe annular recess 31, the inside and outside of the storage are shut off, and the cool air in the storage passes through the drainage channel 36 to the outside. It is possible to prevent the odor from flowing out to the inside and the outside odor from entering the storage through the drainage channel 36.

Next, the handle 41 is pinched and the lid member 40 is turned on the drain pipe cylinder wall 30, and as shown in FIG. 6, the protrusions 32 on the drain pipe cylinder wall are fitted into the recesses 43 of the lid member 40. Then, the lower surface of the lid member 40 comes into close contact with the upper surface of the drain pipe cylinder wall 30, and at the same time, the lower end of the lid member outer peripheral wall 42 abuts on the drain pipe annular bottom wall 29, so that the lid member 40 completely closes the drain pipe 27. Seal tightly. Therefore, regardless of whether or not water is stored in the drainage pipe annular recess 31, the inside and outside of the storage are always shut off, and the cold air in the storage flows out through the drainage channel 36 to the outside or outside. One odor is reliably prevented from entering the storage through the drainage channel 36.

In addition, when it is not necessary to pay attention to the outflow of cold air and the invasion of odor and a large amount of waste water must be treated, for example, with a tool such as a screwdriver, By cutting one or both of the thin portion 45 of the lid member 40 into an appropriate size according to the amount of drainage, the required drainage action can be easily performed. Further, in a drainage port that only drains water, only the drain pipe 27 may be installed to remove the lid member 40, and the thin portion 34 of the drain pipe tube wall 30 may be cut off with a tool such as a screwdriver. Therefore, the drain pipe 27 and the lid member 40 can be flexibly used for various purposes such as various types of storages, refrigerators, constant temperature and high humidity chambers, refrigerated showcases, cold display cases, washing machines, etc. By using parts with the same specifications in common for many purposes, the manufacturing cost of them can be easily reduced as a whole.

In the above embodiment, when the protrusions 32 on the drain pipe cylinder wall are fitted in the recesses 43 of the lid member 40, the lower end of the lid member outer peripheral wall 42 is in contact with the drain pipe annular bottom wall 29. However, if the lower surface of the lid member 40 is in close contact with the upper surface of the drain pipe cylinder wall 30, the lower end of the lid member outer peripheral wall 42 does not necessarily have to abut on the drain pipe annular bottom wall 29, and vice versa. An annular groove or step surrounding the drain pipe cylinder wall 30 is provided on the drain pipe annular bottom wall 29, or the drain pipe annular bottom wall 29 is provided substantially horizontally, and the length of the lid member outer peripheral wall 42 is set to the drain pipe. When the projections 32 on the drain pipe cylinder wall are not fitted into the lid member recess 43 by making the height slightly larger than the height of the cylinder wall 30, the lower surface of the lid member 40 is not in contact with the drain pipe cylinder wall 30. However, when the protrusions 32 on the wall of the drain pipe are fitted in the recess 43 of the lid member, If the lower end of the member outer peripheral wall 42 is configured to be in close contact with the annular groove or step or the drain pipe annular bottom wall 29, even if the lower surface of the lid member 40 is not in close contact with the upper surface of the drain pipe cylinder wall 30. The lid member 40 can seal the drain pipe 27.

[0015]

[Effect of the device]

 The drain trap device according to the present invention, when the lid member is placed on the drain pipe, covers the water stored in the annular recess formed by the inner peripheral wall of the drain pipe, the annular bottom wall and the outer periphery of the cylindrical wall. The surrounding wall of the member is immersed to prevent the outflow of cold air and odors through the drainage pipe, or the drain member of the drainage pipe is directly closed by the lid member, and the cold air flow through the drainage pipe is also prevented. It is possible to reliably prevent the entry of odors.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of an essential part with a part of the above embodiment broken away.

FIG. 3 is a longitudinal sectional view taken along the line AA of FIG.

FIG. 4 is a bottom view of a main part of the above embodiment.

5 is a vertical cross-sectional view taken along the line BB of FIG.

FIG. 6 is an explanatory view of the operation of the above embodiment.

FIG. 7 is a vertical cross-sectional view of a conventional device.

[Explanation of symbols]

 24 Bottom part of storage 27 etc. Drain pipe 28 Inner peripheral wall 29 Annular bottom wall 30 Cylindrical wall 31 Annular recess 32 Protrusion 34 Thin wall part 36 Drainage channel 40 Lid member 42 Outer peripheral wall 43 Recessed part 45 Thin wall part

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[Procedure amendment]

[Submission date] August 6, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7] ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 5, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (1)

[Claims for utility model registration] [Claim 1] A drain pipe attached to the bottom of a storage or the like and a lid member for the drain pipe, the drain pipe having an inner peripheral wall,
An annular bottom wall extending inward from the inner peripheral wall, a tubular wall rising from the annular bottom wall, and a drainage channel extending downward in the tubular wall,
The lid member is provided with a plurality of projections provided on the upper end thereof, and the lid member is provided with a peripheral wall that hangs between the inner peripheral wall of the drain pipe and the cylinder wall, and the projection of the drain pipe provided on the lower surface. When the protrusion of the drain pipe is not fitted into the recess of the lid member, a gap is formed between the annular bottom wall of the drain pipe and the lower end of the peripheral wall of the lid member. A drain port trap device, wherein the drain member of the drain pipe is closed by the lid member when the projection is fitted in the recess of the lid member.