JPH05312461A - Draining device of showcase and the like - Google Patents

Abstract

PURPOSE:To provide a draining device for a showcase and the like wherein the connection of a water storage pipe and the setting of the direction of a drain pipe can be performed very easily. CONSTITUTION:A drain port 1 is formed in a drain socket 13 at the bottom of an insulating wall 3. A circumferentially shaped groove 16 being open downward is formed on the external surface of the socket 13 around the port 1. A screw thread 19 is formed on one of the walls 17 oppositely disposed to constitute the groove 16. In an opening 23 having circumferential shape, a water storage pipe 22 being open upward is positioned below the port 1 so as to be attached to the groove 16. A screw thread 29 for threaded engagement with the thread 19 is formed on one side of the periphery of the opening 23 of the pipe 22. A circumferentially shaped O-ring 32 is provided on the other side of the periphery of the opening 23 so as to come into cantact with the other wall 18 of the groove 16. A connection part 27 for connection of a drain pipe 28 is formed at the lower part of the pipe 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device for discharging miscellaneous drainage such as a showcase or defrosting water.

[0002]

2. Description of the Related Art In a conventional showcase such as a freezer-refrigerating open showcase, for example, the actual open show 52-4236.
As disclosed in Japanese Patent Publication No. 3 (F25D21 / 14), a drainage port is formed at the bottom of the heat insulating wall, a water storage pipe is connected to the drainage port from below, and a drainage pipe extending laterally is connected to the water storage pipe. Was. With this configuration, defrosted water generated inside the showcase and miscellaneous drainage such as juice from food are collected at the drainage port at the bottom of the heat insulation wall, flow down from the drainage port to the water storage pipe, and are discharged to the outside from the drainage pipe. Is done. The water storage pipe has a U trap portion for temporarily storing drainage therein, and has a structure for preventing insects from entering the drainage pipe and backflow of outside air.

[0003]

However, the conventional water storage pipe has a structure in which it is adhered to the pipe descending downward from the drain port with an adhesive. Therefore, the direction of the drainage pipe cannot be changed after the water storage pipe is attached.Therefore, the direction of the drainage pipe must be set in advance before adhering the water storage pipe, and the water storage pipe must be connected in that state. However, the work of installing the water storage pipe and the work of setting the direction of the drainage pipe were extremely complicated.

The present invention has been made in order to solve the above-mentioned conventional technical problems, and provides a drainage device such as a showcase capable of extremely easily connecting the water storage pipe and setting the direction of the drainage pipe. The purpose is to provide.

[0005]

A drainage device such as a showcase according to the present invention is formed on a drainage port 1 formed at the bottom of a heat insulating wall 3 and an outer surface of a heat insulating wall (drain socket 13) around the drainage port 1, A circumferential groove 16 that opens downward, a screw thread 19 formed on one wall surface 17 of the opposing walls that form the groove 16, and a circumferential opening 23 that opens upwards to form a drainage port. 1 and a water storage pipe 22 which is attached to the groove 16 and is located below the water storage pipe 22. The water storage pipe 22 is formed on one side of the peripheral edge of the opening 23 and has a screw portion 29 screwed to the screw thread 19. , A circumferential sealing material (O-ring) 32 provided on the other side of the periphery of the opening 23 and in contact with the other wall surface 18 of the groove 16, and a connecting portion 27 for connecting the drain pipe 28 formed in the lower portion. It is characterized by having.

[0006]

According to the drainage device of the present invention such as a showcase,
The thread 19 of the groove 16 formed on the outer surface of the heat insulating wall (drain socket 13) around the drainage port 1 has a threaded portion 29 of the water storage pipe 22.
The water storage pipe 22 can be attached to the groove 16 from below the heat insulating wall 3 by screwing. At the same time, in the range where this screwed relationship is maintained, the water storage pipe 22 is
Since it is rotatable with respect to 6, the direction of the drain pipe 28 connected to the connecting portion 27 can be freely set. At this time, since the sealing material (O-ring) 32 contacts the other wall surface 18 of the groove 16, there is no risk that the drainage in the water storage pipe 22 leaks from the groove 16 portion.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an enlarged vertical perspective view of the bottom of the heat insulating wall 3 of the showcase 2 in the drainage port 1, and FIG. 2 is a vertical side view of the showcase 2. In FIG. 2, the showcase 2 is an open showcase that opens forward through the opening 4 on one side,
A partition plate 6 is attached to the inside of a heat insulating wall 3 made of a heat insulating material such as foamed polyurethane and having a substantially U-shaped cross section with a space. The inside of the partition plate 6 serves as a storage chamber 7, and a space between the partition plate 6 and the heat insulating wall 3 serves as a cold air passage 8. A cooler 9 included in the refrigeration cycle is vertically installed in a cool air passage 8 located behind the storage chamber 7, and a blower 11 is housed in the cold air passage 8 at the bottom, and cooling is performed by the operation of the blower 11. The cold air cooled by the container 9 is the cold air passage 8
It rises up inside and is blown out to the opening 4 to form a cool air curtain in the opening 4, and at the same time, cool the inside of the storage chamber 7 to a predetermined refrigerating or freezing temperature.

At the front side of the blower 11 located at the bottom of the heat insulating wall 3, that is, at the lowest position of the bottom surface 3A of the heat insulating wall 3, a drain socket 13 made of molded heat insulating material as a part of the heat insulating wall 3 is embedded. The drain socket 13 is provided with a circular drainage port 1 having a diameter of about 80 mm, which communicates the cold air passage 8 with the outside of the heat insulating wall 3. At the lower opening edge of the drainage port 1, a mounting portion 14 protruding inward as shown in FIG.
Are formed. Further, a circumferential groove 16 is formed around the drain port 1 on the outer surface (lower surface) of the drain socket 13 so as to surround the drain port 1. The groove 16 is open downward, and the inner wall surface 17 which is one wall surface of the inner and outer wall surfaces 17 and 18 facing each other is provided with a screw thread 19 having a pitch of 2 mm, for example, in a range of 10 mm above and below. In addition, an inclined surface 21 that expands outward is formed at the lower end opening edge of the outer wall surface 18.

A water storage pipe 22 made of vinyl chloride, for example, is attached below the drainage port 1. The water storage pipe 22 has a large cylindrical portion 24 that is open upward through a circular opening 23, and a middle cylindrical portion 2 that projects slightly upward from the center of the bottom wall of the large cylindrical portion 24.
6 and a connecting portion 27 continuously extending downward from the middle tubular portion 26 and bent to the side, and a drain pipe 28 is connected to the connecting portion 27 with an adhesive and pulled out to the side. Has been. A threaded portion 29 having the same pitch as the thread 19 is formed inside the periphery of the opening 23, and an engagement groove 31 is formed outside the periphery of the opening 23, which serves as a circumferential sealing material. Rubber O-ring 32 is attached.

In order to attach the water storage pipe 22 to the heat insulating wall 3, the opening 23 of the water storage pipe 22 is made to correspond to the groove 16 formed on the outer surface of the drain socket 13 from below, and the screw portion 29 inside the periphery of the opening 23 is fixed to the inner wall surface 17 of the groove 16. I will screw it to the screw thread 19 of. By this screwing operation, the upper end of the large tubular portion 24 enters the groove 16, and the O-ring 32 also enters the groove 16.
At this time, since the inclined surface 21 is formed at the lower end portion of the outer wall surface 18, the O-ring 32 can be guided by the inclined surface 21 and smoothly enter the groove 16. The water storage pipe 22 is attached to the drain socket 13 by screwing the thread 19 and the screw portion 29. Further, the O-ring 32 enters the groove 16 and comes into contact with the outer wall surface 18 over the entire circumference thereof.

Here, when the water storage pipe 22 is rotated 5 times after the screw portion 29 is screwed into the screw thread 19, the upper surface of the opening 23 comes into contact with the bottom wall of the groove 16 and stops. By loosening the screw in the range, the direction of the drain pipe 28 can be freely set in the range of 360 degrees. In addition, the O-ring 32 is attached to the outer wall surface 18 in the range of at least one final rotation in which the screw thread 19 and the screw portion 29 are screwed together.
To abut. Thereby, the drain pipe 28
The O-ring 32 can be brought into contact with the outer wall surface 18 in the entire range in which the direction is set.

After the water storage pipe 22 is attached in this way, a drain screen 36 made of polypropylene, for example, is attached to the drain port 1 from the side of the cold air passage 8. The drain screen 36 has a cylindrical shape that is open upward, a flange 37 that projects outward is formed on the upper edge of the drain screen 36, and a plurality of slits 38 are formed in the side wall. In addition, a handle portion 39 that is erected upward from the bottom wall of the drain screen 36.
Is integrally formed, and the drain screen 36 is detachably attached to the drain port 1 by holding the handle portion 39 and inserting the handle portion 39 into the drain port 1, and mounting the flange 37 on the mounting portion 14. In this way, the handle 39 is attached to the drain screen 3
The number of parts is reduced by integrally molding with 6.

At this time, the lower end portion 36A of the side wall of the drain screen 36 enters between the large cylinder portion 24 and the middle cylinder portion 26 of the water storage pipe 22 with a space therebetween. Further, the bottom wall of the drain screen 36 has a shape facing above the upper end of the middle tubular portion 26 with a space. As a result, the U trap 42 is formed between the middle tubular portion 26 and the large tubular portion 24.

In the above-mentioned structure, the drainage of defrosting water, food juice, etc. dropped on the bottom surface 3A of the heat insulating wall 3 is
The water flows into the drainage port 1 along the slope of A, passes through the drain screen 36, enters the water storage pipe 22, and flows down from the middle tubular portion 26 to the drainage pipe 28 via the U trap 42 and is discharged.
At this time, dust or food residue contained in the drainage is dammed by the slit 38 (for example, about 4 mm in width) of the drain screen 36, so that the water storage pipe 22 and the drainage pipe 28 are not clogged. Further, since the drainage is stored in the U-trap 42, it is possible to prevent insects from entering through the drainage pipe 38 and backflow of outside air into the cold air passage 8. Furthermore, even if the drainage overflows and reaches the upper part of the large cylinder portion 24, the O-ring 32
Contacts the outer wall surface 18 of the groove 16 and seals,
Leakage of drainage water from the groove 16 is reliably prevented.

When dust in the drainage is accumulated in the drain screen 36, it can be easily discarded by holding the handle portion 39 and lifting it together with the drain screen 36. Further, when the fine dust that has passed through the slit 38 is accumulated in the U trap 42, the U trap 42 is opened upward by removing the drain screen 36 as described above. Can be inserted and cleaned easily.

Although the thread 19 is formed on the inner wall surface 17 of the groove 16 in the embodiment, the thread 19 is formed on the outer wall surface 18 and the screw portion 29 is formed on the outer side of the opening 23 accordingly.
The ring 32 may be provided inside. Further, although the open showcase is taken up in the embodiment, the present invention is not limited to this, and the present invention is also effective in a refrigerator or the like.

[0017]

According to the present invention, the water storage pipe can be easily attached from below the heat insulation wall by screwing the threaded portion of the water storage pipe into the thread of the groove formed on the outer surface of the heat insulation wall around the drainage port. it can. Further, since the water storage pipe can be rotated with respect to the groove by screwing the screw thread and the screw portion, the direction of the drainage pipe connected to the connection portion of the water storage pipe can be freely set, and Even if the water storage pipe is rotated, leakage of water from the groove is reliably prevented by the seal material, so that the work of mounting the water storage pipe and setting the direction of the drainage pipe can be performed extremely smoothly and easily as a whole. Is.

[Brief description of drawings]

FIG. 1 is an enlarged vertical perspective view of a heat insulating wall bottom portion of a showcase in a drainage port portion.

FIG. 2 is a vertical sectional side view of a showcase.

[Explanation of symbols]

 1 Drain Port 13 Drain Socket 16 Groove 19 Screw Thread 22 Water Storage Pipe 27 Connection Portion 28 Drainage Pipe 29 Screw Portion 32 O-ring

Claims (1)

[Claims] 1. A drainage port formed on the bottom of a heat insulating wall such as a showcase, and an outer surface of the heat insulating wall around the drainage port,
A circular groove that opens downward, a screw thread formed on one wall surface of the opposing walls that form the groove, and a circular opening that opens upward and is located below the drain port. And a water storage pipe attached to the groove, the water storage pipe being formed on one side of the opening peripheral edge and provided on the other side of the opening peripheral edge with a threaded portion screwed into the screw thread. A drainage device such as a showcase, which has a circumferential seal member that abuts on the other wall surface of the groove, and a connection portion for connecting a drainage pipe formed in a lower portion.