JPH09152254A - Drainage device for refrigerating showcase, etc. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily install a drainage device, in which an inlet pipe is connected to one side of the upside of a hollow drain trap and an outlet pipe to the other side of the upside, under an insulated box of a refrigerating showcase even if the distance from the top to the bottom of the showcase is short, by forming the drain trap into almost an oval shape when seen from top. SOLUTION: In the case a drainage device A is installed right under the front lower part of an insulated box 1 of a refrigerating showcase 1, a round drain hole 6 is formed at the lowest part of the front middle part of the insulated box 1, and an enlarged-diameter shoulder part is formed above the drain hole 6. A bushing 7 is fitted in the drain hole 6, a removal strainer 13 is arranged on the bushing 7 and a trap 14 is connected to the lower part of the bushing 7. The trap 14 has a water trap part 17 that communicates with both lower ends of a tubular inlet pipe 15 and adjacent elbow-shaped outlet pipe 16. The water trap part 17 is formed into a flat oval shape whose upsides are located at the outer ends of the inlet and outlet pipes 15 and 16. Thereby, the drainage device with a large drainage capacity can be easily installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device suitable for use in a refrigerated showcase or the like and capable of reducing the vertical height.

[0002]

2. Description of the Related Art In a refrigerating showcase, water generated in the case is discharged through a trap from a drain hole provided at the lowest part of the heat insulating box of the case, so that cold air in the case is dissipated, Prevents warm air and insects from entering from the outside.

[0003]

However, since the gap between the bottom surface of the heat insulating box of the case and the floor surface is narrow, the conventional trap is bent in a U shape and has a high vertical height. , Limited to small, small calibers.
Therefore, the drainage capacity was small, and foreign substances mixed in the drainage were easily clogged.

An object of the present invention is to provide a drainage device which can be easily installed in a narrow space below a heat insulating box in a refrigerated showcase or the like and has a large drainage capacity.

[0005]

According to the present invention, the above object is to provide a refrigeration system in which an inflow pipe is connected to the upper surface of one side of a hollow box-shaped reservoir and an outflow pipe is connected to the upper surface of the other side thereof. In a U-trap type drainage device in a showcase or the like, both side portions of a water storage portion between the inflow pipe and the outflow pipe are laterally bulged to make the water storage portion substantially elliptical in plan view. Will be solved.

[0006]

1 to 4 show an embodiment of the present invention, and FIG. 5 schematically shows a refrigerating showcase to which the present invention is applied.

In FIG. 5, a display shelf (2) is installed in a heat insulating box (1) having a front opening (left side in FIG. 5), and a cool air passage (3) formed between the display shelf (2) and a blower ( 4) by chiller
The cool air that has passed through (5) is circulated, and the drainage device (A) of the present invention is provided immediately below the front lower part of the heat insulating box (1).

In the lowest part of the front center of the heat insulation box (1), as shown in FIG.
As shown in FIG. 5, a circular drainage hole (6) is provided so as to penetrate therethrough, and a diameter-increasing step portion (6a) is formed on the upper portion thereof.

(7) is a bushing, which is an annular support plate at the upper end.
On the lower surface of (8), an outer fitting cylinder (9), an intermediate locking cylinder (10), and an inner water passage cylinder (11) lined up concentrically are vertically provided.
(9) is fitted in the lower part of the drainage hole (6), the outer peripheral part of the support plate (8) rides on the step part (6a), and an annular groove ( 12) is cut.

In the center of the support plate (8) of the bushing (7),
A downward cage strainer (13) is removably mounted.

Reference numeral (14) denotes a trap portion, which is a hollow box-shaped water storage portion (17) for continuously connecting the lower ends of a vertical cylindrical inflow pipe (15) and an adjacent elbow-shaped outflow pipe (16). Is different from a normal trap, both sides bulge to the side and the flat shape is the inlet pipe (1
5) and the outer end of the outflow pipe (16) are flat elliptical with both ends of the long axis, and are connected to the upper end of the inflow pipe (15) by a short cylindrical fitting part (18). A plurality of engaging protrusions (19) are provided on the outer peripheral surface at important points.

The trap portion (14) is a fitting portion (1) for the injection pipe (15).
8) is pressed from below between the locking cylinder (10) of the bushing (7) and the water passage cylinder (11), and the engagement protrusion (19) is elastically engaged with the annular groove (12), so that the heat insulation box The drainage device is formed by being suspended from (1) and connecting the drainage hose (20) to the outlet of the outflow pipe (16) of the trap portion (14).

[0013]

In the above-mentioned device of the present invention, since both sides of the water storage portion between the inflow pipe and the outflow pipe bulge laterally, drainage is possible even if the vertical dimension of the water storage portion is small. The passage cross-section does not decrease, it can be easily installed in the space below the heat-insulating box in the refrigerated showcase with a narrow vertical interval, and the drainage capacity does not decrease.

Further, since the reservoir part has an elliptical shape in plan view,
Drainage from the inflow pipe side can smoothly flow from the reservoir part to the outflow pipe without causing turbulent flow or the like on the way, and clogging of foreign matter in the drainage is small.

[Brief description of the drawings]

FIG. 1 is a central longitudinal side view of the device of the present invention.

FIG. 2 is likewise a central longitudinal exploded side view.

FIG. 3 is an enlarged plan view of a trap portion.

FIG. 4 is an enlarged view of a portion B in FIG. 1;

FIG. 5 is a central longitudinal side view schematically showing a refrigerating showcase to which the present invention has been applied.

[Explanation of symbols]

 (A) Device of the present invention (1) Insulation box (2) Display shelf (3) Cold air passage (4) Blower (5) Freezer (6) Drainage hole (6a) Expanding step (7) Bushing (8) Support plate (9) Fitting tube (10) Locking tube (11) Water passage tube (12) Annular groove (13) Strainer (14) Trap section (15) Inflow pipe (16) Outflow pipe (17) Reservoir section ( 18) Mating part (19) Engagement protrusion (20) Drain hose

Claims (1)

[Claims] 1. A U-trap type drainage device in a refrigerating showcase or the like in which an inflow pipe is connected to the upper surface of one side of a hollow box-shaped water reservoir and an outflow pipe is connected to the upper surface of the other side thereof, respectively. A drainage device in a refrigerating showcase or the like, characterized in that both sides of the water storage portion between the inflow pipe and the outflow pipe are laterally bulged so that the water storage portion has an approximately elliptical shape in plan view.