JP2002147934A - Operation controller for freezing/refrigeration show case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation controller for a show case having excellent handling property wherein the flexibility of installation upon assembling a show case in a canopy section is improved, and further inputting and alteration of varieties of set values of operation control are treated with ease from the front of the show case. SOLUTION: An apparatus is separated to an operation controller body, and an operation/display section equipped with an input set unit and a data display on a front panel section, and both are connected with each other through a signal cable. The controller body is contained in a canopy section provided at a front upper portion of a case body, and the operation/display section is fitted to a front decorative plate of the canopy section and the front surface of the operation/display section is covered with an opening/closing cover which is transparent through an opposite surface to a display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of an operation controller mounted on a freezing and refrigeration showcase, and a mounting structure thereof.

[0002]

2. Description of the Related Art A refrigerated showcase is equipped with an operation controller which takes in signals from a temperature sensor inside a refrigerator, a defrost temperature sensor, an outside air temperature sensor, etc., and controls the temperature inside the refrigerator and controls defrosting. . In recent showcases, an electronic controller is generally employed as a driving controller. The electronic controller has a microcomputer control unit as a core, an operation unit for inputting set values such as the temperature sensor, the internal temperature, the defrosting time, and the defrosting end temperature, and input data thereof, and a cold storage unit. This is a combination of a liquid crystal display type display unit for digitally displaying the internal temperature and the like. In the conventional configuration, all the components except for the temperature sensor are assembled into a controller as an integrated type. The operation controller is stored in a canopy-shaped lighting fixture mounting section called a canopy section provided at the upper front of the showcase, and the operation section and the display section are provided in a see-through window opened in a front decorative panel of the canopy section. It is installed to face.

[0003]

By the way, the shape and size of the canopy portion of the refrigerator-freezer showcase differ depending on the type. For this reason, in the integrated operation controller as described above, when the controller is stored in the canopy part, there is a case where the controller cannot be installed at a desired position due to space restrictions depending on the model of the showcase.

Setting switches for the internal temperature, defrosting temperature, high-temperature alarm, low-temperature alarm, and the like can be changed at any time by the user after the on-site installation of the showcase, and setting switches are attached to the front operation panel of the controller. However, when the operation of the refrigerator is controlled to be ON / OFF by the thermo operation control, the differential of the thermostat (ON-O
The FF width) is set by a dip switch provided on the side of the case of the controller separately from the setting switch of the operation unit, and is normally set to a standard set value before shipment from the factory. For this reason, if it is necessary to change the differential set value of the thermostat after the showcase is installed on site, the makeup panel of the canopy portion covering the controller is removed, and the dip switch incorporated in the controller body is removed. The current situation is to deal with this by operating.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to solve the above-mentioned problems, to increase the degree of freedom of installation when incorporated into a canopy portion of a showcase, and to input various set values for operation control. It is an object of the present invention to provide a refrigerated showcase operation controller excellent in serviceability, in which a change can be easily performed from the front of the showcase.

[0006]

In order to achieve the above object, an operation controller according to the present invention comprises a controller main body and an operation / display section having an input setting device and a data display on a front panel. The two are interconnected with a signal cable, and the controller body is stored inside the canopy part provided at the top front of the case body, and the operation and display part is installed by fitting it into the front decorative panel of the canopy part. An opening / closing lid having a transparent surface facing the display is attached to the front of the operation / display unit.

[0007]

According to the above construction, even when it is difficult to equip the controller body and the operation / display unit at the same place due to the limitation of the mounting space in the canopy part, the controller body and the operation / display unit are not required. Is made as a separate part, and by attaching an open / close lid to the front of the operation / display section,
It can be installed separately from the display unit, which increases the degree of freedom on the installation surface.In the normal operating state of the showcase, the temperature inside the refrigerator displayed on the display unit through the transparent surface of the lid It can be read from the front, and on the other hand, the switches on the operation unit are hidden behind the lid and cannot be seen from the outside, and cannot be touched directly with hands, thereby preventing tampering operation.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, in FIG. 1A, reference numeral 1 denotes a case body of a multi-stage open showcase, 2 denotes a product display shelf in a refrigerator, 3
Is a cooler (evaporator of a refrigerator) installed in the cool air circulation duct 4, 3 a is a defrost heater of the cooler 3, 5 is a cool air blower fan, 6 is a canopy provided at the upper front of the case body 1, 7 is Reference numeral 8 denotes an illuminator mounted on the lower surface side of the canopy unit, and 8 denotes an operation controller incorporated in the canopy unit 6 for installation. Here, as shown in FIG. 1B, the operation controller 8 includes a controller main body 9 having a built-in microcomputer control unit, an operation / display unit 10 separated and independent from the controller main body 9, and a temperature sensor (thermistor) 1
1, the operation / display unit 10 includes a signal cable 12,
The temperature sensor 11 has a lead wire 11a connected to an input terminal 9b of the controller main body via a connector 11b via a cable connector (connector with a locking claw) 12a.
Reference numeral 9c denotes a thermostat differential setting dip switch incorporated in the controller main body 9 and is provided on a side surface of the controller main body 9.

Further, as the temperature sensor 11,
(A) In-chamber temperature sensors 11A,
A temperature sensing portion (thermistor) of a temperature control temperature sensor 11B, a defrost temperature sensor 11C, and an outside air temperature sensor 11D is arranged and connected to the controller body 9. In this case, as a measure for preventing the wiring error of each temperature sensor and simplifying the wiring work, the coating of the lead wire (covered wire) of the temperature sensor is color-coded and connected to the input terminal of the same color. .

Then, the controller main body 9 is stored inside the canopy section 6, and the operation / display section 10 is shown in FIG.
As shown in (a) and (b), the canopy portion 6 is fitted from the front into a mounting window 6b opened in the front decorative plate 6a, and is fixed to the window frame via locking claws 10a provided on both right and left ends. In this case, as shown in FIG. 2 (b), the controller
c is positioned and arranged such that it faces the mounting window 6b.

Returning to FIG. 1B, the operation / display unit 1
On the front panel 0, there are provided an input setter 13, a liquid crystal display 14 for digitally displaying various data such as the internal temperature and set values, a defrost lamp 15 (lights up during defrost), and the like. The sequence is shown in FIG. In addition,
The input setting unit 13 includes a control item changeover switch 13a, a control item indicator light 13b, a feed switch 13c for changing the set value of each control item, and a return switch 13d.

Further, the operation / display unit 10 is provided with an opening / closing lid 16 so as to cover the front surface thereof. As shown in FIG. 3B, the open / close lid 16 is a state in which the front surface of the display 14 and the defrost lamp 15 is a see-through surface 16a, the remaining surface area is an opaque surface 16b, and the open / close lid 16 is closed. Thus, the display contents of the display 14 and the lighting state of the defrost lamp can be viewed from the front of the showcase. If a list is displayed on the back side of the opening / closing lid 16 indicating the set value of the temperature in the refrigerator for each use of vegetables, meat, fish, frozen food, etc., the setting value changing work is performed with reference to this list. It is easy and convenient.

With this configuration, during normal operation of the showcase, the opening / closing lid 16 of the operation / display unit 10 is closed, and in this state, the temperature inside the refrigerator displayed on the display 14 through the see-through surface 16a of the opening / closing lid 16 is displayed. It can be visually checked from the front of the case. On the other hand, when changing the internal temperature setting value or the like depending on the season or the like, the user opens the opening / closing lid 16 and operates the input setting unit 13 from the front to change the setting value of a necessary control item. When it is necessary to change the differential of the temperature sensor 11, the operation / display unit 10 is moved forward from the front decorative plate 6a of the canopy unit 6 using a jig such as a driver as shown in FIG. The DIP switch 9c of the controller body 9 can be operated by inserting a fingertip into the mounting window 6b of the front decorative panel 6a.

FIG. 4 is an input / output configuration diagram showing the functions of the operation controller.

[0015]

As described above, according to the configuration of the present invention, the operation controller can be incorporated into the showcase,
In addition, the following effects can be obtained in terms of driving adjustment performed at the location of the showcase. The operation controller is separated into the controller main unit and the operation / display unit equipped with an input setting unit and data display display on the front, and the two are interconnected by a signal cable, and the controller main unit is installed on the upper front of the case main unit. Inside the canopy, the operation / display section is fitted into the decorative panel on the front of the canopy section, and an opening / closing lid with a transparent surface facing the display is attached to the front of the operation / display section. As a result, it is possible to easily incorporate various showcases into the canopy portion of the showcase with almost no restrictions on installation space, and to easily adjust various control items performed at the location of the showcase. In addition, during normal operation of the showcase, the contents of the display can be seen through, Work can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, (a) is a layout diagram of a driving controller incorporated in a showcase,
(B) is a configuration perspective view of the operation controller.

2A and 2B are diagrams illustrating a structure in which an operation / display unit of a controller in FIG. 1 is incorporated into a canopy unit, wherein FIG. 2A is an attached state diagram, FIG.

3A and 3B are front views of an operation / display unit of the controller in FIG. 1, in which FIG. 3A is a state diagram of an open / close lid, and FIG.

FIG. 4 is an input / output configuration diagram showing functions of an operation controller.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Showcase main body 6 Canopy part 6a Front decorative panel 6b Mounting window 8 Operation controller 9 Controller main body 9a, 9b Terminal 9c Dip switch (for differential adjustment of temperature sensor) 10 Operation / display section 10a Locking claw 11 Temperature sensor 12 Signal cable 13 Input setting device 14 Display 15 Defrost lamp 16 Open / close lid 16a Transparent surface 16b Opaque surface

Claims (1)

[Claims] An operation controller for controlling the temperature in a refrigerator and controlling defrosting of a freezer and refrigeration showcase, comprising: a controller main body; an input setting device on a front panel;
It is separated into an operation / display unit equipped with a data display display, and the two are interconnected with a signal cable.The controller body is stored inside a canopy unit provided on the upper front of the case body. A controller for operating a freezer and refrigeration showcase, wherein the controller is installed by being fitted into a decorative panel on the front of the canopy, and an opening / closing lid having a transparent surface facing the display is attached to the front of the operation / display unit. .