JPH0531509Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the drainage structure of drain water in a non-defrost type frozen or refrigerated open show case.

(Prior Art) Conventionally, the one shown in FIG. 2 is known as a non-defrost type refrigerated open case. As is clear from FIG. 2, this type of case has an opening 2 on the front of the case body 1 for loading and unloading products, and partition plates 3 and 4 are provided inside the case body to separate the upper and lower parts of the product storage chamber 5. A cold air circulation path 6 and a protective air circulation path 7 outside the cold air circulation path 6 are formed along the rear surface, thereby forming an air curtain consisting of a cold air flow and a protective air flow in the front opening 2. In the cold air circulation path 6, there are two coolers 8a,
8b are partitioned and arranged by partition plates 9. When defrosting these coolers, a four-way solenoid valve is actuated by a controller provided in the main body to defrost alternately, that is, one by one, so that cooling operation is always performed.

In order to promote airflow, a blower 10 and a fan casing 11 extending perpendicularly to the longitudinal direction of the case body, that is, the front-rear direction, are provided at the lower part of the cold air circulation path 6, and a blower 12 is also provided at the upper position of the protective air circulation path 7. It is provided. In the cooling chamber panel forming the bottom of the lower part of the protective airflow circuit 7 there is an outlet 13 for draining the drain water. Further, there are drain holes 14 provided at appropriate pitches in the partition plate 3a directly above or in the vicinity of the drain port 13.

Drain water generated by defrosting the cooler flows through the bottom partition plate 3a at the bottom of the cold air circulation path, and flows through the blower 10.
The drain water passes through the drain passage groove provided in the fan casing 11 under the wind pressure caused by the partition plate 3.
The air flows toward the front of the case due to the slope a, flows through the drain hole 14 into the protective air circulation path 7, and is discharged from the drain port 13 to the outside of the main body.

(Problem to be solved by the invention) Conventionally, this type of open shower case was constructed as described above, so that the bottom partition plate 3a at the bottom of the cold air circulation path 6 may be bent, or the amount of drain water may be low and draining may be difficult. In the worst case, the water freezes and the ice grows over time, making it impossible to drain the drain water properly.

The purpose of the present invention is to solve the above-mentioned problems of the conventional technology, and therefore, to properly discharge the drain water generated by defrosting the cooler in a non-defrost type refrigerated open shower case without freezing it. It is an object of the present invention to provide the above-mentioned open case with a structure that allows the invention to be carried out.

(Means for Solving the Problems) The structure that characterizes the open refrigeration case according to the present invention is that a slit 15 extending in the longitudinal direction is provided in the bottom partition plate at the bottom of the cold air circulation path immediately before the fan casing, and a slit 15 is provided that extends in the longitudinal direction. In order to prevent bypass, a bypass prevention plate 16 is installed just before the fan casing and closes the upper part of the slit.

(Function) Drain water generated by defrosting the cooler flows along the bottom partition plate at the bottom of the cold air circulation path, and when it is pushed forward from the fan casing 11 by wind pressure, it immediately flows down through the slit 15 and is relatively The air enters the protective airflow circulation path 7 where the temperature is high, flows forward along the circulation path, and is discharged to the outside through the drain port 13.

(Example) Next, an example of the present invention will be described with reference to the drawings. The refrigerated open storage case to which the present invention relates also includes a cold air circulation path 6 and a protective air circulation path 7 along the top, bottom, and back side of the product storage chamber 5, and a blower 10 and a blower 10 extending in the longitudinal direction at the bottom of the cold air circulation path 6. A fan casing 11 is disposed, and two coolers 8a and 8b are arranged in the cold air circulation path with a partition plate 9.
These coolers are defrosted alternately to maintain cooling operation at all times.

As shown in FIG. 1, the feature of this open-show case is that the bottom partition plate at the bottom of the cold air circulation path 6 is located just in front of the fan casing 11 in the longitudinal direction, that is, in the direction perpendicular to the front-rear direction and the up-down direction of the case body. A slit 15 extending in the longitudinal direction is provided, and a bypass prevention plate 16 also extending in the longitudinal direction is attached at that position. Therefore, the slit 15 and the bypass prevention plate 16 are provided along the fan casing 11. Note that the term "immediately in front of the fan casing 11" means a position close to the fan casing 11 and a side close to the front opening 2 as shown in the figure.

This slit 15 is preferably formed as a continuous slit extending in the longitudinal direction of the case body. In that case, the bottom partition plate of the cold air circulation path 6 is constituted by a pair of plates, a front side plate 21 and a rear side plate 22, and the fan casing 11 is formed as a continuous slit extending in the longitudinal direction of the case body. is fixed to the front edge of the rear side plate 22, and between the front edge of the rear side plate 22 and the rear edge of the front side plate 21.
The slit 15 is provided in between. In that case, in order to block the upper part of the slit 15, the bypass prevention plate 16 is attached to the front side plate 2, for example, as shown in FIG.
A rising portion is provided by bending the rear edge of fan casing 1 , and the fan casing 11 is fixed between the rising portion and the fan casing 11 .
In some cases, the bypass prevention plate 16 may be integrally formed with the front plate 21 as a portion rising at a right angle from the rear edge of the front plate 21. Furthermore, the lower part of the fan casing 11 is provided with a gap, a groove, or a notch through which drain water can pass, as in the conventional case.

Defrosting of the coolers is performed alternately one by one, and the drain water generated by defrosting is drained to the rear plate 2 at the bottom of the cold air circulation path.
2 and is partially dammed up at the fan casing 11. Generally, a plurality of blowers 10 are used, and normally, half of the blowers 10 on one side are stopped during defrosting, but they are activated again after defrosting, and the drain water that was dammed up is blown up by the wind pressure. It passes through the casing 11. After passing the fan casing 11, the drain water immediately flows down into the protective air circulation path 7 through the slit 15 and is discharged out of the case body through the drain port 13. A bypass between the cold air circulation path 6 and the protective air circulation path 7 through the slit 15 is prevented by the bypass prevention plate 16, so that the cooling performance is not reduced.

(Effects of the invention) As described above, according to the invention, drain water generated by defrosting passes through the fan casing at the bottom of the cold air circulation path and immediately flows down from the slit to the protective air circulation path. The drain water does not remain on the bottom partition for long, thus preventing the drain water from freezing and being properly drained.

[Brief explanation of the drawing]

FIG. 1 is an enlarged view of a portion corresponding to section A in FIG. 2, showing the main parts of the open show case according to the present invention, and FIG. 2 is a side sectional view showing the entire conventional open show case. In the figure, 6...cold air circulation path, 7...protective air circulation path, 8a, 8b...cooler, 10...blower, 1
1...Fan casing, 15...Slit, 1
6... Bypass prevention plate, 21, 22... Bottom partition plate.

Claims (1)

[Scope of utility model registration request] A cold air circulation path and a protective air circulation path are arranged along the top, bottom and back of the product storage chamber inside the case body.
A blower and a fan casing extending in the longitudinal direction are installed in the lower part of the cold air circulation path, and the two coolers arranged in the cold air circulation path are alternately defrosted and the cooling operation state is always maintained. In the type of frozen/refrigerated open case,
A slit extending in the longitudinal direction is provided in a bottom partition plate below the cold air circulation path immediately before the fan casing, and a slit is provided immediately before the fan casing to prevent bypass between the cold air circulation path and the protective air circulation path through the slit. A refrigerated open storage case characterized by having a bypass prevention plate installed on the side.