JP3048813B2 - Low temperature showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is applied to a plurality of stores in a store.
The present invention relates to a low-temperature showcase that operates on a common power supply.

[0002]

2. Description of the Related Art Conventionally, a plurality of low-temperature showcases are installed in a store such as a supermarket. Such a low-temperature showcase is, for example, a low-temperature showcase formed by a heat insulating wall 1a as shown in FIG. In some cases, a product storage room 2 is formed in the case main body 1, while a machine room 2 a in which devices such as a cooling device 3 and a cool air circulation fan 4 are disposed below the product storage room 2.

[0003] In such a low-temperature showcase,
The cool air circulating fan 4 allows cool air from the cooling device 3 to pass through a cool air passage 6 formed between the heat insulating wall 1a and a partition plate 5 provided at the rear of the product storage room 2 as shown by an arrow, The product storage room 2 is cooled by blowing out from a cool air outlet (not shown) provided at the front end of the top of the product storage room 2. A low-temperature showcase having such a configuration is disclosed in Japanese Utility Model Publication No. 5-10217. Is shown in

In FIG. 1, reference numeral 7 denotes a cover of the cooling device 3, and reference numeral 8 denotes a fan cover which has a mounting opening 9 for the cool air circulating fan 4 and can be opened and closed by a hinge (not shown). Reference numeral 10 denotes a bottom plate detachably attached to the bottom of the product storage room 2.

On the other hand, these low-temperature showcases are operated by a common power supply, and various devices mounted on each low-temperature showcase, such as a cool air circulation fan motor, a handrail heater, a defroster, etc. As shown in FIG. 4, the heater, the liquid solenoid valve, and the like are collectively wired to the terminal plates 11, 12, respectively.

When an abnormality or the like occurs in a device in the machine room of the low-temperature showcase, first, a cold air circulating fan motor 1 shown in FIG.
3 is stopped, and then the bottom plate is removed, and then the fan cover is opened for inspection and repair or cleaning. Also,
At this time, if necessary, the liquid solenoid valve is closed to stop the supply of the refrigerant to the cooling device, and then inspection and repair and cleaning are performed.

[0007]

However, in such a conventional low-temperature showcase, the cooling air circulation fan is normally operated continuously, and the liquid solenoid valve is normally opened. When stopping or closing for reasons such as cleaning, it is necessary to operate the main breaker. However, when the main breaker is operated in this manner, there is a problem that the cool air circulation fan motor and other devices of the other low-temperature showcase indicated by reference numeral 13a in FIG.

Accordingly, the present invention has been made to solve such a problem, and only a desired device is provided.
It is an object of the present invention to provide a low-temperature showcase that can be stopped without affecting other low-temperature showcases.

[0009]

According to the present invention, a plurality of cooling devices and a cooling air circulating fan are provided below a product storage room, and the cooling device is circulated and supplied by the cooling air circulating fan. in low-temperature showcase which is adapted to cool the product storage chamber at the cold air from the device, along with fan switch for the respective said low-temperature showcase for turning on and off the cold air circulating fan is provided et the said off
The fan switch has a mounting opening for the cool air circulation fan.
Opening and closing movement of the fan cover that is formed and can be opened and closed freely
On the fan cover so that the switch operates in conjunction with the work
The one that is attached.

Further, according to the present invention, a plurality of cooling devices and a cooling air circulating fan are provided below a product storage room in a store, and cool air from the cooling device circulated and supplied by the cooling air circulating fan is provided. In the low-temperature showcase configured to cool the product storage room, the low-temperature showcase includes a fan switch for turning on and off the cooling air circulating fan, and a liquid electromagnetic device provided in a cooling device for each of the low-temperature showcases. with a solenoid valve switch for opening and closing the valve is <br/> et provided, the fan switching and the electromagnetic Bence
The switch has a mounting opening for the cool air circulation fan.
To open and close the fan cover, which is
Attached to the fan cover so that it can operate and switch
It is something that has been damaged.

[0011]

[0012]

The cooling air circulation fan of each of the plurality of low-temperature showcases installed in the store can be turned on and off by a fan switch. Further, the liquid solenoid valve provided in the cooling device of each low-temperature showcase can be turned on and off by a solenoid valve switch. Furthermore, the fan switch and the solenoid valve switch can be attached to the fan cover of the cool air circulation fan, and the fan switch and the solenoid valve switch can be operated in conjunction with the opening / closing operation of the fan cover.

[0013]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a state in which a fan cover is opened in a machine room of a low-temperature showcase according to an embodiment of the present invention. In FIG. 1, the same reference numerals as those in FIG. Is represented.

In FIG. 1, reference numeral 14 denotes a mounting bracket for mounting the cool air circulation fan 4 on the fan cover 8 so as to be freely mounted.
Reference numeral 15 denotes a defrost heater. Reference numeral 16 denotes a fan switch attached to the fan cover 8 so as to perform a switch operation in conjunction with the opening / closing operation of the fan cover 8. In this embodiment, a mercury switch is used as the fan switch 16.
Reference numeral 6 is attached to the side wall of the fan cover 8 so that the switch operation can be performed reliably.

Here, this fan switch 16 corresponds to FIG.
As shown in the circuit diagram of FIG. 3, the cooling fan is provided between the terminal board 11 and the cooling air circulation fan motors 13 and 13a of each low-temperature showcase. The fan switch 16 is provided for each low-temperature showcase, and the fan switch 1
By turning off the fan 6 in conjunction with the opening of the fan cover 8, the cool air circulation fan 4 of the desired low-temperature showcase can be stopped.

On the other hand, in this embodiment, when cleaning or the like is performed, it is not necessary to blow out cool air, so that a liquid solenoid valve (not shown) provided in the cooling device 3 is closed. An electromagnetic valve switch (not shown) is provided between the terminal plate and the liquid electromagnetic valves of each low-temperature showcase so that the liquid electromagnetic valves can be opened and closed in this manner.

The electromagnetic valve switch is mounted on the fan cover 8 together with the fan switch 16 so that the switch operation can be performed in conjunction with the opening and closing operation of the fan cover 8. In addition, by enabling the switch operation of the fan switch 16 and the solenoid valve switch in conjunction with the opening / closing operation of the fan cover 8 in this way, forgetting to turn off the switch before cleaning or the like and forgetting to turn on the switch after cleaning or the like can be prevented. So that it can be prevented.

Next, the switch operation at the time of cleaning the low-temperature showcase thus constructed will be described.

When an abnormality occurs in the machine room 2a of the low-temperature showcase, the bottom plate 10 of the product storage room 2 is removed, and then the fan cover 8 is opened as shown in FIG. When the fan cover 8 is opened in this manner, the fan switch 16 and the switch for the solenoid valve are switched, and
The cooling air circulation fan 4 is stopped and the liquid solenoid valve is closed, so that the supply of the refrigerant to the evaporator is stopped.

Thereafter, inspection and the like are performed. At this time, since the cool air circulation fan 4 is stopped, the operation can be performed safely. In addition, since no cold air is blown out, energy can be saved. On the other hand, when the inspection or the like is completed and the fan cover 8 is closed, the fan switch 16 and the switch for the solenoid valve are operated to switch, the cool air circulation fan 4 starts to operate, and the liquid solenoid valve is opened to stop the evaporator. As a result, the refrigerant is supplied.

As described above, the cool air circulating fans 4 of each low-temperature showcase installed in the store are connected to the fan switch 1.
6, the liquid solenoid valve provided in the cooling device 3 can be turned on and off by a solenoid valve switch, so that a specific low-temperature showcase can be cleaned.

Further, a fan switch 16 and a solenoid valve switch are mounted on the fan cover 8 and the fan cover 8
Since the switch can be operated in conjunction with the opening / closing operation of the switch, it is possible to prevent the switch from being turned off and from being turned on.

In the above description, the case where a mercury switch is used as the fan switch 16 has been described, but a micro switch may be used as the fan switch 16. When the microswitch is used as described above, the mounting position is not limited to the side wall of the fan cover 8 but may be the bottom surface of one end portion abutting on the bottom surface of the machine room 2a of the fan cover 8 as shown in FIG. It may be.

In the above description, the switch operation of the fan switch 16 and the like has been described as being linked to the opening and closing operation of the fan cover 8. However, when a toggle switch is used as the fan switch 16, the fan cover It is also possible to operate the switch manually without attaching to the switch 8. Even when the toggle switch is used in this way, at least the cooling air circulation fan 4 of the specific low-temperature showcase can be stopped and the liquid solenoid valve can be closed to perform cleaning or the like.

[0026]

As described above, according to the present invention , multiple copies can be stored in a store.
Create a cool air circulation fan for each low-temperature showcase
Control the opening and closing of the fan switch and liquid solenoid valve
Attach the solenoid valve switch to the fan cover, and
Switch operation in conjunction with opening and closing of the cover
An abnormality occurred in the showcase and the inside was inspected.
When it is necessary to
If you open the fan cover of the showcase, the showcase
Only affects other normally working showcases
The refrigeration operation stops, the fans stop,
Inspection and repair and cleaning can be performed completely.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a fan cover in a machine room of a low-temperature showcase according to an embodiment of the present invention is opened.

FIG. 2 is a diagram showing a circuit configuration of the low-temperature showcase.

FIG. 3 is a side sectional view of a main part of a conventional low-temperature showcase.

FIG. 4 is a diagram showing a circuit configuration of the low-temperature showcase.

[Explanation of symbols]

 3 Cooling device 4 Cooling air circulation fan 8 Fan cover 16 Fan switch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 11/00 101 F25D 29/00 A47F 3/04

Claims (2)

(57) [Claims] A cooling device and a cool air circulation fan are provided below a product storage room, and the product is cooled by the cool air from the cooling device and supplied by the cool air circulation fan. in low-temperature showcase so as to cool the storage chamber, fan switch for turning on and off the cold air circulating fan is provided in each of said low-temperature showcase Rutotomoni, the fan switch, the cold air
A circulation fan mounting opening is formed so that it can be opened and closed freely.
Switch operation in conjunction with opening and closing operation of the fan cover
A low-temperature showcase, wherein the low-temperature showcase is attached to the fan cover . 2. A plurality of cooling devices and a cooling air circulating fan are provided below the product storage room, and the cooling device circulates and supplies the cooling air from the cooling device. In the low-temperature showcase configured to cool the storage room, each low-temperature showcase opens and closes a fan switch for turning on and off the cool air circulation fan and a liquid solenoid valve provided in a cooling device of each low-temperature showcase. co When the solenoid valve switch Ru provided with
The fan switch and the solenoid valve switch,
A mounting opening for the cooling air circulation fan is formed to open and close the cooling air circulation fan.
The switch is linked to the opening / closing operation of the existing fan cover.
Switch attached to the fan cover to operate
Low-temperature showcase characterized by Rukoto. -Case.