JPH02233976A - Temperature display device for show case - Google Patents

Abstract

PURPOSE:To display the temperature of a food itself without being influenced by an external condition and to prevent fluctuation of a set temperature within an upper and a lower limit by a method wherein, by means of a set temperature in a chamber, a detected temperature in a chamber, and a timer, a display temperature is decided. CONSTITUTION:A temperature in a chamber set by a set means 4 and a temperature in a chamber detected by a detecting means 5 are inputted to a control means 18, where the temperatures are compared with each other. A resulting signal is outputted to a timer 14 and a display temperature deciding means 19. The timer 14 starts counting by means of a signal input from the control means 18, and when a time exceeds a preset value, a signal is outputted to the display temperature deciding means 19. The display temperature deciding means 19 inputs signals from the timer 14 and the control means 18 to decide a display temperature, and a signal therefrom is outputted to a display means 17 to output the signal. This constitution enables display of a fluctuation-free and stable temperature and the temperature of a food itself.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a temperature display device for a showcase or the like that detects the temperature inside a refrigerator and displays the temperature.

BACKGROUND OF THE INVENTION In recent years, some digital displays have been used in computer cases and the like that have a temperature display function to display the internal temperature.

An example of a conventional temperature display device such as a showcase will be described below with reference to the drawings.

FIG. 4 shows a block diagram of a conventional temperature display device such as a heat case, and FIG. 6 is an operation flowchart thereof. In FIG. 4, 1 is a detection means for detecting the temperature inside the refrigerator and outputs a temperature signal S1. Reference numeral 2 denotes a control means that inputs the temperature signal S1 from the detection means 1 and outputs a temperature signal S2. 3 is a display means for inputting the temperature signal S2 from the control means 2 and displaying the temperature signal S2.

The operation of the conventional temperature display device such as a seat case constructed as described above will be explained below using the flowchart shown in FIG.

First, when the power is turned on, in step a, the internal temperature T
is detected by the detection means 1 (the temperature inside the refrigerator at this time is referred to as the temperature inside the refrigerator T).
is output to. Then, in step b, the control stage 2
The temperature signal S, inputted to the controller 2, determines the internal temperature T as the display temperature to be displayed (this temperature is referred to as display temperature TD). Then, the display temperature Tp determined by the control means 2 in step C is outputted from the control means 2 as a temperature signal S2, and the display means 3 inputs and displays the temperature signal S2, and returns to step a.

Problems to be Solved by the Invention However, in the above-mentioned conventional gutter storage, the displayed temperature directly displays the temperature inside the refrigerator, and does not display the temperature of the food itself stored in the refrigerator. If the temperature detected by the device fluctuates due to the influence of wind or other temporary changes when the door is opened, the displayed temperature will fluctuate within the upper and lower limits of the set temperature.

The present invention solves the above-mentioned conventional problems, and aims to provide a temperature display device for a showcase that is not affected by external influences, displays the temperature of the food itself, and does not fluctuate within the upper and lower limits of the set temperature. shall be.

Means for Solving the Problems In order to achieve this object, the temperature display device of the present invention includes a setting means for setting the temperature inside the refrigerator, a detection means for detecting the temperature inside the refrigerator. , a control means for inputting and comparing signals from the setting means and the detection means, and outputting a signal; a timer for inputting the signal from the control means and counting time; and a timer for inputting the signal from the control means and counting time; It has a configuration of a display temperature determining means for inputting and determining a display temperature, and a display means for inputting a signal from the display temperature determining means and displaying it.

Function: With this configuration, the displayed temperature is determined based on the temperature set by the setting means, the city temperature detected by the detection means, and the timer, a signal is output to the display means, and the display temperature is displayed by the display means. It happens.

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

FIG. 1 is a block diagram of a temperature display device for a showcase or the like according to an embodiment of the present invention, FIG. 2 is an operation flowchart thereof, and FIG. 3 shows its set temperature range.

In Fig. 1, 4 sets the temperature inside the refrigerator and sends a temperature signal S3.
This is a setting means that outputs. 6 is a detection means for detecting the temperature inside the refrigerator and outputs a temperature signal S4.

Reference numeral 6 denotes a display temperature determining means for inputting the temperature signal S3 from the setting means 4, determining whether it is the display temperature (hereinafter referred to as TD), and outputting a signal S6.

7 inputs the signal S6 from the display temperature determining means θ;
This is a display temperature determination value determining means for determining a value (for example, a sign) for determining the display temperature, and outputs a signal S6. Reference numeral 8 denotes display temperature upper limit determining means for inputting the temperature signal S3 from the setting means 4 and outputting a temperature signal S7 converted to an upper limit value. Reference numeral 9 denotes display temperature lower limit determining means for inputting the temperature signal S3 from the setting means 4 and outputting a temperature signal S8 converted to a lower limit value. Reference numeral 10 inputs the signal Se from the display temperature judgment value determination means 7, and inputs the temperature code S7 from the display temperature upper limit determination step 8 and the detection means 6? The temperature signal S4 is compared with the signals S9 and S1.

This is the first comparison means that outputs. 11 inputs the temperature signal S1o from the first comparison means 10, compares the temperature signal S8 from the display temperature lower limit determining means 9 with the temperature signal S4 from the detection means, and outputs signals S and S12. This is the second means of comparison.

12 inputs the temperature signal S from the second comparison means 12, compares the temperature signal S3 from the setting means 4 and the temperature signal S4 from the detection means 6, and calculates the signals S and S.
This is the third comparison means that outputs 14.

13 inputs the temperature official number S9 from the first comparison means 10 or the temperature number S11 from the second comparison means 11,
Display temperature judgment value determining means judges the signal S6 from the display temperature judgment value determining means and outputs the signal S16 or signal "16. 14 inputs the signal S16 from the display temperature judgment means 13, Start the timer counting,
This is a timer that outputs the signal S1■ or the signal S18.

Reference numeral 16 denotes a first circuit which inputs the signal S1 from the timer 14, the official code S16 from the display temperature judgment value determination means 13, or the signal S13 from the third comparison means 12, and outputs a temperature signal S18. This is a display temperature determining means.

16 is the signal S14 from the third comparing means 12 or
The signal S18 from the timer 14 is input, and the temperature signal S
This is a second display temperature determining means that outputs 19. 17 is a temperature signal S18 from the first display temperature determining means 16
or the temperature signal S from the second display temperature determining means 1e.
19 is input and displayed. Reference numerals 18 indicate display wetness determination means 6, display temperature determination value determination means 7, display temperature upper limit determination means 8, display temperature lower limit determination means 9, first comparison means, second comparison means, and third comparison means 12. , a control means consisting of a display temperature judgment value judgment means 13. Reference numeral 19 denotes a display temperature determining means comprising a first display temperature determining stage 16 and a second display temperature determining means.

The operation of the temperature display device such as a showcase constructed as described above will be described below using FIGS. 1, 2, and 3.

First, when the power is turned on, in step d, the set temperature is set by the setting means 4 (this temperature is set at the set altitude T).
s), and the set temperature Ts is output as a temperature signal S3. Then, in step e, the internal temperature is detected by the detection means 6 (this temperature is defined as the internal temperature T'
) is output as a temperature signal S4. Next, in step f, the temperature displayed by the display means 17 (this temperature is referred to as the display temperature Tp) is input as the temperature signal S3 to the set temperature TS in the display temperature determination means 6.
If it is determined that Equation (1) is satisfied, the signal S6 is output and the logic proceeds to step h; otherwise, the logic proceeds to step q.

TD=Ts ・・・・・・・・・・・・・・・・・・
(1) Next, in step q, the display temperature judgment value determining means 7 outputs the signal S6 with the sign S=o, for example, as the signal S6 input from the display temperature judgment means 6. , the logic advances to step 1. Next step h
In the display temperature judgment ψ value determination means 7, the signal S6 inputted from the display temperature judgment stage 6 is given a sign of, for example, S=1, and the signal S6 is outputted, and the logic proceeds to step 1.

Next, in step i, the display temperature upper limit determining means 8 determines the set temperature Ts input as the temperature signal S3 from the setting means 4.
The set ON temperature calculated from "ON"("ON>
"S,) is determined and outputted, the temperature signal S7, and the temperature inside the refrigerator T inputted as the temperature signal S4 from the detection stage 6.
' is compared by the first comparison means 1o, (if the Nishiki formula is satisfied, the signal S9 is output and the process goes to step l; otherwise, the signal S1o is output and the process goes to step j). and proceed with the logic.

T′〉TON ・・・・・・・・・・・・・・・・・・
...In step j of Hakuji, the display temperature lower limit determining means 9 calculates the set OFF temperature TOF calculated from the set temperature Ts input as the temperature signal S3 from the setting means 4.
The second comparison means 11 compares the temperature signal S8 which has been determined and outputted ("OF"S) with the temperature T' input as the temperature signal S4 from the detection means 6. If the formula is satisfied, the signal S11 is output and the process proceeds to step l; otherwise, the signal S12 is output and the logic proceeds to step k.

T'＜T ・・・・・・・・・・・・・・・・・・
...(-4OFF) Next, in step k, the third comparing means 12 compares the internal temperature T'h input as the temperature signal S4 from the detection stage 5 and the temperature signal S3 input as the temperature signal S3 from the setting means 4. (If Equation 4 is satisfied, the temperature signal S, 4 is output and the process proceeds to step n; otherwise, the signal S13 is output and the logic proceeds to step 0.) .

T' = T3・・・・・・・・・・・・・・・・・・
(Fourth step l, the display temperature judgment value judgment means 13 receives the signal S6 from the display temperature judgment value judgment means 7.
If the input code S satisfies the (time expression), the signal S1 is output and the process proceeds to step m; otherwise, the signal S16 is output and the logic proceeds to step 0.

S=1 ・・・・・・・・・・・・・・・・・・・・・
...(Next, in step m, the timer 14 inputs the signal S15 from the display temperature judgment value judgment means 13 and starts counting time. (This counting time is set as t)
Then, when the count time t satisfies the predetermined time t3, it outputs the signal S1 and goes to Nutep 0, and if it is possible, it outputs the signal S18, and step n The logic advances to.

? ＞t B・・・・River・・River・・・・・・・
...(Next, in step n, the signal S14 from the third comparison means 12 and the signal S18 from the timer 14 are input to the second display temperature determination means 11, and the set temperature Ts is input to the display to be displayed. Temperature TD is determined as temperature signal S
, 9 is output from the second display temperature determining means 16 to the display means 17, and is displayed by the display means 17 at step p, and the process returns to step d. In step 0, a signal S16 is sent from the display temperature judgment value determining means 13, a signal S13 is sent from the third comparing means 12, and a signal S1 is sent from the timer 14.
is input, and the internal temperature T/,AH is determined as the display temperature TD to be displayed, and the temperature is displayed by the display means 17 from the first display temperature determination stage 16 as number S18, and the process returns to step d.

As described above, according to one embodiment of the present invention, the internal temperature T'U
Comparing the preset set temperature Tst71j collective limit temperature "ON" with the set OFF temperature "OFF," when the internal temperature T' is outside the upper and lower limits of the set temperature TB, the upper and lower limits of temperature Even if the inside temperature T' is equal to the set temperature Ts, the inside temperature T' is used as the display temperature TD until the condition that the inside temperature T' and the set temperature Ts are equal is met. Once the conditions are met, the temperature inside the refrigerator T is within the upper and lower limits of the set temperature T8, and even if the internal temperature T' exceeds the upper and lower limits of the set temperature Ts, it will remain within a certain period of time. If so, the set temperature Ts
By setting and displaying the display concealment degree TD, it is possible to display the stable temperature of the food itself that is not affected by external factors.

Effects of the Invention As described above, the present invention includes a setting means for setting the temperature inside the refrigerator, a display temperature determining means for inputting a signal from the setting means, determining the displayed temperature, and outputting a signal, and a detection means for detecting temperature; a comparison means for inputting and comparing signals from the setting means and the detection means; and a timer for inputting the signal from the comparison means and counting time; and the comparison means. By providing a display temperature determining means for inputting a signal from a timer and a timer to determine the displayed temperature, and a display means for inputting a signal from the display temperature determining means and displaying a display, the food itself is stable and does not fluctuate. This makes it possible to realize an excellent temperature display device such as a showcase that can display the temperature of .

[Brief explanation of drawings]

Fig. 1 is a block diagram of a temperature display device such as a showcase in an embodiment of the present invention, Fig. 2 is an operation flowchart thereof, Fig. 3 is a diagram of its set temperature range, and Fig. 4 is a temperature display device of a conventional display case etc. The block diagram of the display device, FIG. 6, is its operation flowchart. 4...Setting means, 6...Detection means, 1
4...Timer, 17...Display means, 1
8... Control means, 19... Display temperature determining means. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
figure

Claims (1)

[Claims] A setting means for setting the temperature inside the refrigerator, a detection means for detecting the temperature inside the refrigerator, a control means for inputting and comparing signals from the setting means and the detection means, and outputting a signal, and a signal from the control means. a timer for inputting and counting time, a display temperature determining means for inputting signals from the control means and the timer and determining the display temperature, and a display means for inputting the signal from the display temperature determining means and displaying the display temperature. A showcase temperature display device characterized by comprising: