JPH01222183A - Cleaning device for low temperature show case - Google Patents

Abstract

PURPOSE:To avoid a fan motor from being flooded with waste water, by installing several first nozzles to the upper part of a drain channel provided with a drain port, and allowing said nozzles to jet a cleaning liquid in a cone- shaped manner toward said drain channel in order to improve the way how to drain a cleaning liquid from a drain port. CONSTITUTION:A drain port 29 is formed in the lowest position of a drain channel 28 formed on the upper surface of a bottom wall 3A in a longitudinal direction. A first nozzle 50 and a second nozzle 53 jet water, which serves as a cleaning liquid, in a cone-shaped manner. The cleaning liquid from the first nozzle 50 is directly ejected toward the drain channel 28 at several location substantially over the entire route of the drain channel. Merchandise labels or remnants on the drain channel 28 are agitated under the jet pressure of the cleaning liquid so that the cleaning liquid may be drained from a drain port 29 to a satisfactory extent. Moreover, the cleaning liquid from the first nozzle 50 is ejected at a location distant from fans 20 and 21, which can keep the fans 20 and 21 from being flooded. The second nozzle 53 can eject the cleaning liquid only toward a deck pan, which also prevents the scattering of the cleaning liquid outside a storage room.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a cleaning device for a low temperature showcase that forcibly circulates airflow.

(b) Conventional technology Publication No. 148580/1983 (F25D11100
), Japanese Utility Model Publication No. 50-40365 (70B42) provides a cleaning device for a low-temperature showcase that sprays water into the passage to clean the passage walls and evaporator, and Japanese Utility Model Publication No. 53-9
No. 2759 (70B1) is provided with a water sprinkler for humidifying products in a storage room.

(c) Problems to be Solved by the Invention In the former of the above-mentioned conventional techniques, the cleaning liquid that is spouted from the nozzle is directly spouted to areas other than the drain or the drain, so the product does not flow into the drain or the drain. In the latter case, there was a problem in that the label and product residue tended to clog, and in the latter case, the worker had to operate the hand shower, so cleaning the pan was a problem.

The present invention is aimed at solving the above-mentioned problems, and uses a nozzle suitable for cleaning a passageway in which a fan case is installed, a deck pan, a shelf, and a honeycomb, and arranges the nozzle at an appropriate position.

(d) Means for Solving the Problems In order to achieve the above object, the cleaning device of the present invention squirts cleaning liquid in a conical shape toward the drainage channel at several locations above the drainage channel having a drainage port. A first nozzle is provided.

Additionally, several second nozzles are provided along the suction port, which is the entrance of the passage, to spray the cleaning liquid toward the deck pan.

In addition, a male hand shower coupling is provided at the suction port that serves as the entrance of the passage, and a hand shower is equipped with a female fitting that pairs with the male fitting and a third nozzle that sprays cleaning liquid in a flat shape at a predetermined angle. are doing.

(*) Effect According to the above configuration, the cleaning liquid from the first nozzle is directly jetted out from several places in a conical shape over almost the entire length of the drain channel, so there are several places where the jetting pressure is strong. Product labels and product residue in the drain channel are agitated by the jetting pressure of the cleaning liquid, and as a result, the labels and residue in the drain channel are floated, making it possible to improve drainage of the cleaning solution from the drain port.

Further, since the cleaning liquid from the first nozzle is ejected at a position away from the fan, flooding of the fan motor can be avoided.

Further, since the second nozzle can spray the cleaning liquid only towards the deck pan, the second nozzle can be used as a nozzle exclusively for the deck pan, and the cleaning liquid can be prevented from scattering outside the storage room.

Further, since the third nozzle has the function of spraying the cleaning liquid widely in a flat shape at a predetermined angle, not only shelves but also long and narrow honeycomb materials can be efficiently cleaned.

(1) Examples of the present invention will be described in detail based on the drawings. (1) shown in Fig. 9 is an opening (2) for storing and taking out products on the front side.
This is an open-type low-temperature showcase whose main body is composed of a heat insulating wall (3) formed with a first wall, which is divided from the inner wall of the heat insulating wall (3) at an appropriate interval. 2nd both compartment board (4A
) (4B) (5A) (5B), removable deep pans (
6) and fan case (7), a storage room (9) having multiple shelves (8), a first passage (10) for circulating cold air, and a second passage for circulating protective air are created.
The passageway (11) and the first tube facing each other along both the upper and lower sides of the opening (2). Blowout and suction ports (12), (13), (14) and (15) of the second passages (10) and (11) are formed. A honeycomb material (16 bars 17) serving as a flow straightening device is arranged at the air outlet (12) and (13), respectively. A plate-fin type evaporator (18) is also arranged in the back area of the first passage (10). The fan case (7)
The first . It is located in the common passageway (19) which is a part of the bottom area of the second double passageway (10 bars 11).
Because the first fan (20) for circulation of cold air and two second fans (21) for circulation of protective air are provided, ventilation holes (22>(23)) are formed at five locations. At the same time, four partition plates (24
) is provided, and the inside of the fan case (7) is a first
It is divided into a high pressure chamber (25) and a second high pressure chamber (26) for protective air flow. (27) is the second passage (11)
The front area of the suction passage (IIA) and the second high pressure chamber (2
6) are two communication ducts that communicate with. (28
) is a drainage channel formed in the longitudinal direction of the upper surface of the bottom wall (3A), which becomes the galemban (31), and a drain port (29) connected to the drain pipe (30) is formed at the lowest part thereof. .

In the low-temperature showcase (1), as shown in FIG. 9, the cold air flow is forcedly circulated as shown by the solid line arrows, and the protective airflow is forcedly circulated as shown by the chain line arrows, thereby creating air curtains (At) in the openings (2), respectively. (A2), and the storage chamber (9) is maintained at a predetermined temperature by both air curtains (At) (A2).

That is, the cold air flow flows through the evaporator (18), outlet (12), opening (2), and suction port (1) of the first passage (10) at a temperature of 0°C or less.
4), the suction passage (IOA>), the common passage (19), the first high pressure chamber (25), and the protective airflow is circulated through the second passage (11),
Air outlet (13), opening (2), suction port (15), suction passage (IIA), communication duct (27), second high pressure chamber (26)
is circulated.

(50) is a first nozzle for cleaning the drain pan (31), which is arranged at several places in the common passage (19) at equal intervals, and through which the air flow passes below O''CC.
9) are provided at the tips of three branch pipes (52) branched from the first water supply pipe (51) completely disposed within. (5
3) are deck pans (6) arranged at several locations above the suction port (14) of the first passage (10) at equal intervals.
) A second nozzle for cleaning, which branches from the second water supply pipe (54) arranged in the suction passage (IIA) of the second passage (11) and connects the suction passage (IOA) of the first passage (10) and Suction port (
14) are provided at the tips of three branch pipes (55) passing through the pipe. (56) is the suction port (1) of the second passage (11).
5) is a male coupling for a hand shower disposed at either one location above the left end or above the right end, which connects the suction path (IIA) of the second passageway (11) and the suction port (15).
It is provided at the tip of the third water supply pipe (57) passing through.

(58) has a shelf (8) or honeycomb material (16) at the tip.
A hand shower equipped with a third nozzle (59) for cleaning (17), a long and flexible hose (6o) and a cup connected to the male coupling (56) at the rear end so as to be freely removable and removable. It is equipped with a ring female fitting (56A). When cleaning the honeycomb materials (16) (17) with this hand shower, the honeycomb materials (16) (17) are removed from the secondary outlets (12) (13) and placed in the deck pan (6).
placed on top.

Said 1st. Both second nozzles (50) and (53) are of a conical shape, and eject water as a cleaning liquid in a conical shape as shown in FIG. The third nozzle (59) is a flat type that spouts cleaning liquid in a flat shape at a predetermined angle as shown in FIG.
16) In relation to cleaning (17), the above-mentioned 1. Ejection pressure higher than the ejection pressure of both the second nozzles (50) and (53) can be obtained.

(61) is a piping unit placed in the space below the heat insulating wall (3), and as shown in Fig. 5, this unit is equipped with a strainer (62) and a pressure control valve (63), and one end is connected to a water pipe. A main water supply pipe (64) connected to a water supply source such as
A water supply branch pipe (65) branches from the middle of this main water supply pipe, and a water supply valve (66) branches from this water supply branch pipe, respectively for water supply.
) (67). Both second water supply pipes (51
) (54) connected to the rear end of the first. The second water supply branch pipes (68) (69), the third water supply pipe (57) whose rear end is connected to the other end of the main water supply pipe (64), and the drainage solenoid valve (70) ( 71), with one end connected to the main drain pipe (72
), and the other end faces the first. The first water pipe connected to the rear ends of both the second water supply pipes (51) and (54). Both second drain pipes (73) and (74) are provided. The opening and closing operations of the water supply solenoid valve (66) and the drainage solenoid valve (7o) are controlled by a controller described later. Also, the above-mentioned No. 1. The first drain pipe connected to the second drain pipes (73) and (74). Both second water supply pipes (51) and (54) are arranged so that the portions cooled by the cold air flow have an inclination of a predetermined angle as shown in FIG.

(75) shown in Fig. 7 is a tank containing detergent liquid (76), and the detergent liquid (76) in this tank is supplied to the detergent supply pipe (77).
) and an ejector (7) provided on the main water supply pipe (64).
8) and is sucked into the cleaning liquid flowing through the main water supply pipe (64). (79) is a hot water sensor placed inside the tank (75), and if the detergent liquid (76) is insufficient, the Hund 6-1ler will alert you. Output is emitted.

(80) is a controller equipped with a timer (81) and an alarm (82), and uses the on contact of the timer (81) to operate the water supply solenoid valve (66) corresponding to the first nozzle (50). At the same time, the drain solenoid valve (70) is closed, and the water supply solenoid valve (66) is closed using the off contact.
) is closed, and the drainage solenoid valve (70) is opened. The time from turning on to turning off the timer (81) can be set arbitrarily, but in consideration of the temperature rise of the cold air flow due to cleaning, a short time of 1 to 5 minutes is preferable, and the number of times is determined by the evaporator ( It is sufficient to set it according to the number of times of defrosting in 18). The opening and closing operations of the water supply and drainage solenoid valves (67) and (71) corresponding to the second nozzle (53) are performed by a manual switch (83) disposed in the controller (80).

The specific opening/closing operations of the water supply and drainage solenoid valves (66) and (70) corresponding to the first nozzle (50) depend on the defrosting cycle and time of the evaporator (18) as shown in the time chart in FIG. It is carried out in synchronization with. That is, while the evaporator (18) is being defrosted, the water supply electromagnetic valve (66) opens and the cleaning liquid is spouted from the first nozzle (50) toward the drain pan (31), and the defrosting is completed and the cooling begins. When it returns, the drain solenoid valve (
70) is opened and the residual cleaning liquid in the first water supply pipe (51) is discharged, and so-called water drainage is performed.

(90) is a sensor for detecting dust clogging placed in the fan case (7), and a product label whose drain port (29) was peeled off from the product when the drain pan (31) was cleaned by the first nozzle (50). If the water level in the drain pan (31) rises due to clogging with food or product (especially vegetable) residue, etc., the controller (80) outputs an alarm and forcibly stops the spraying of cleaning liquid from the first nozzle (50). The motors of the fans (20) and (21) are prevented from being submerged in water. The mounting position of this sensor 90) is below the motors of the fans (20) and (21).

According to the above configuration, since the cleaning liquid from the first nozzle (50) is directly sprayed from several locations along almost the entire length of the drain channel (28), product labels and product residue in the drain channel (28) are removed. The cleaning liquid is agitated by the ejection pressure, and as a result, labels and residue in the drain channel (28) are lifted, and the cleaning liquid can be drained well from the drain port (29).

In addition, the cleaning liquid from the first nozzle (50) is supplied to the fan (20).
(21) Due to the fact that it is ejected at a location far away from the fan (
20) Submergence of water to the motor in (21) can be avoided.

In addition, since the second nozzle (53) can spray cleaning liquid only towards the deck pan (6), the second nozzle (53) can be used as a dedicated nozzle for the deck pan (6), preventing the cleaning liquid from scattering outside the storage room. can.

Further, since the third nozzle <59) can eject the cleaning liquid in a flat shape at a predetermined angle, it is possible to efficiently clean not only the shelf (8) but also the elongated honeycomb members (16) and (17).

(g) Effects of the invention According to the present invention described above, the following effects are produced.

■The cleaning liquid from the first nozzle is sprayed directly toward the drainage channel from several locations in a conical shape over almost its entire length.
The product labels and product residue in the drain will be agitated by the jetting pressure of the cleaning liquid, and as a result, the label and residue in the drain will be lifted, which will improve the drainage of the cleaning liquid from the drain. Since the cleaning liquid from the nozzle is ejected at a location away from the fan, flooding of the fan motor can be avoided.

■Since the second nozzle can spray the cleaning liquid only towards the tray pan, it can be used as a dedicated nozzle for the tray pan.As a result, not only can the cleaning liquid be prevented from scattering outside the storage room, but it can also be used during non-business hours. You can easily clean the pan.

- The third nozzle can spray the cleaning liquid in a flat shape at a predetermined angle, so it can efficiently clean not only shelves but also long and narrow honeycomb materials.

[Brief explanation of the drawing]

The drawings all show an embodiment of the cleaning device for a low-temperature showcase according to the present invention, and FIG. 1 is a perspective view of the main part, FIG. 2 is a vertical cross-sectional view of the main part, and FIG. A perspective view of both second nozzles, Figure 4 is a perspective view of the third nozzle.
A perspective view of the nozzle, Figure 5 is a plan view of the piping unit, and Figure 6 is a perspective view of the nozzle.
The figure is a piping diagram in the passage, Figure 7 is an explanatory diagram showing the connection between the tank and the main water supply pipe, Figure 8 is a time chart showing the operation of the low temperature showcase, and Figure 9 is a low temperature show before the cleaning equipment is installed. FIG. 3 is a longitudinal cross-sectional view of the case. (3)...insulation wall, (3A)...bottom wall, (6)
... De, Tsukipan, (7) ... Fan case,
(14) (15)... Suction port, (16) (17)...
・Honeycomb material, (18)...evaporator, (19)・
...Aisle, (20) (21)...Fan, (28
)...drainage channel, (29)...drainage port, (31)...
・Drain pan, (50)...1st nozzle, (53)・
...Second nozzle, (58)...Hand shower, (5
9)...Third nozzle.

Claims (1)

[Claims] 1. The upper surface of the bottom wall of the heat insulating wall constituting the main body is used as a drain pan, and a drainage channel is formed along the longitudinal direction of the drain pan, and a drainage port is formed at the lowest part of the drainage channel. , and a low-temperature show comprising a fan case equipped with a fan for forced circulation of air in an area on the leeward side of the drainage channel in a passage formed between the drain pan and a deck pan serving as the lower surface of the storage room. A cleaning device for a low-temperature showcase, wherein the case is provided with first nozzles disposed at several locations above the drainage channel for spouting cleaning liquid in a conical shape toward the drainage channel. 2. The upper surface of the bottom wall of the insulating wall constituting the main body is used as a drain pan, and a drainage channel is formed along the longitudinal direction of this drain pan, and a drain port is formed at the lowest part of this drainage channel, and the drain pan and storage In a low-temperature showcase in which a fan case equipped with a fan for forced circulation of airflow is arranged in an area on the leeward side of the drainage channel in a passage formed between a deck pan serving as the lower surface of the room, A cleaning device for a low-temperature showcase that is equipped with several second nozzles that spray cleaning liquid toward the deck pan along a suction port that serves as an inlet. 3. The upper surface of the bottom wall of the insulating wall constituting the main body is used as a drain pan, and a drainage channel is formed along the longitudinal direction of this drain pan, and a drain port is formed at the lowest part of this drainage channel, and the drain pan and storage In a low-temperature showcase in which a fan case equipped with a fan for forced circulation of airflow is arranged in an area on the leeward side of the drainage channel in a passage formed between a deck pan serving as the lower surface of the room, A hand shower coupling male fitting is provided at the suction port serving as an inlet, and a hand shower is equipped with a female fitting paired with the male fitting and a third nozzle that sprays cleaning liquid in a flat shape at a predetermined angle. Cleaning equipment for low temperature showcases.