Multi-color refrigerator temperature warning device

Abstract

The utility model discloses a multi-color refrigerator temperature warning device which comprises a refrigerator, a temperature sensor is arranged in the refrigerator, a temperature controller, a three-primary-color warning lamp and a power supply module are arranged on the refrigerator, the temperature sensor is electrically connected with the temperature controller, the temperature controller is electrically connected with the three-primary-color warning lamp, and the power supply module is electrically connected with the three-primary-color warning lamp. And the three-primary-color warning lamp and the temperature controller are electrically connected with the power supply module, so that the operation state of the combined cabinet can be intuitively obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerators, and in particular relates to a multi-color refrigerator temperature warning device. Background Art

[0002] A refrigerator is a device that preserves food and other items at low temperatures. Existing refrigerators are provided with adjustment buttons and display screens for adjusting the temperature of the refrigerator. At the same time, the temperature inside the refrigerator is displayed on the display screen, so that the operating status of the refrigerator can be obtained by checking the temperature. However, the brightness of the existing display screen of the refrigerator temperature will gradually decrease until the screen is turned off when no one triggers it. If you want to obtain the operating status of the refrigerator, you need to check the temperature again. At this time, you need to manually trigger the display screen again to light up the display screen for checking the temperature. The operation is cumbersome, and the size of the display screen is small, which is not conducive to checking the temperature information. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a multi-color refrigerator temperature warning device.

[0004] The specific plan is as follows:

[0005] A multi-color refrigerator temperature warning device comprises a refrigerator, a temperature sensor is arranged in the refrigerator, a temperature controller, a three-primary-color warning light and a power module are arranged on the refrigerator, the temperature sensor is electrically connected to the temperature controller, the temperature controller is electrically connected to the three-primary-color warning light, and the three-primary-color warning light and the temperature controller are both electrically connected to the power module.

[0006] The three-primary-color warning light is fixed on the top of the refrigerator or embedded and fixed on the top of the refrigerator door. The three-primary-color warning light is a three-primary-color LED light bar or a three-primary-color LED light box.

[0007] The three-primary-color warning light includes a red LED pin R, a green LED pin G, a blue LED pin B and a common anode pin com. The temperature controller is provided with a power supply pin VCC, a first output pin out1, a second output pin out2 and a third output pin out3. The third output pin out3 is connected to the red LED pin R, the second output pin out2 is connected to the green pin G, the first output pin out1 is connected to the blue LED pin B, and a current limiting resistor R is also provided on the common anode pin com, and the common anode pin com is connected to the power supply pin VCC through the current limiting resistor R.

[0008] The controller is also provided with a ground pin GND and a first input pin IN1 and a second input pin IN2. The first input pin IN1 and the second input pin IN2 are both electrically connected to the temperature sensor. The temperature sensor is an NTC temperature sensor. The ground pin GND, the power supply pin VCC and the common anode pin com are all electrically connected to the power module.

[0009] The power module includes a 220V power input end, a step-down transformer, a diode bridge rectifier circuit and an output voltage stabilizing chip. The 220V power input end is connected to the step-down transformer, the step-down transformer is electrically connected to the diode bridge rectifier circuit, and the diode bridge rectifier circuit is electrically connected to the output voltage stabilizing chip.

[0010] The temperature controller is any one of a single chip microcomputer and a PLC.

[0011] The utility model discloses a multi-color refrigerator temperature warning device. The temperature controller collects the temperature inside the refrigerator through a temperature sensor. At the same time, the temperature controller stores range values ​​of temperatures in different operating states. The collected temperature values ​​are compared with the stored operating state temperature range values, and three-primary color warning lights are driven to display different colors, so as to intuitively obtain the operating state of the cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a connection diagram of the temperature controller, temperature sensor and three-primary-color warning light.

[0014] Figure 3 This is the circuit structure diagram of the power module. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the implementation of the utility model, not all of the implementation. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1 As shown, a multi-color refrigerator temperature warning device includes a refrigerator 2, a temperature sensor 4 is arranged in the refrigerator 2, a temperature controller 3, a three-primary color warning light 1 and a power module are arranged on the refrigerator, the temperature sensor 4 is electrically connected to the temperature controller 3, the temperature controller 3 is electrically connected to the three-primary color warning light 1, and the three-primary color warning light 1 and the temperature controller 3 are both electrically connected to the power module.

[0017] In this embodiment, the power module provides working voltage for the temperature controller 3 and the three-primary-color warning light 1. The temperature sensor 4 is used to convert the temperature in the refrigerator into an electrical signal and transmit it to the temperature controller 3. The temperature controller 3 drives the three-primary-color warning light 1 to display different colors according to the collected temperature value, so as to facilitate intuitive acquisition of the operating status of the cabinet.

[0018] The three-primary-color warning light 1 is fixed to the top of the refrigerator 2 or embedded in the top of the refrigerator door. The three-primary-color warning light 1 is set at the top, which is conducive to viewing the colors displayed by the three-primary-color warning light 1. The three-primary-color warning light is a three-primary-color LED light bar or a three-primary-color LED light box. In this embodiment, it is preferably a three-primary-color LED light box. After the three-primary-color LED light box is lit, the illuminated area is large, which helps to further play a warning role.

[0019] like Figure 2 As shown, the three-primary color warning light includes a red LED pin R, a green LED pin G, a blue LED pin B and a common anode pin com, and the temperature controller is provided with a power supply pin VCC, a first output pin out1, a second output pin out2 and a third output pin out3, the third output pin out3 is connected to the red LED pin R, the second output pin out2 is connected to the green pin G, the first output pin out1 is connected to the blue LED pin B, and a current limiting resistor R is also provided on the common anode pin com, and the common anode pin com is connected to the power supply pin VCC through the current limiting resistor R.

[0020] In this embodiment, in the initial power-on state, the first output pin out1, the second output pin out2 and the third output pin out3 of the temperature controller are all in a high level state, and since the three-primary color warning light 1 is a common anode pin, the three-primary color warning light 1 cannot be lit at this time.

[0021] In addition, the temperature controller 3 stores four different temperature range values, less than -10°C is an ultra-low temperature state, -10°C to 0°C is a low temperature state, 1°C to 8°C is a normal state, and 9°C to 12°C is a high temperature state. Accordingly, in the ultra-low temperature state, the three-primary color warning light 1 lights up and displays blue, in the low temperature state, the three-primary color warning light 1 displays yellow, in the normal state, the three-primary color warning light displays green, and in the high temperature state, the three-primary color warning light 1 displays red.

[0022] If the temperature value collected by the temperature sensor 4 is in an ultra-low temperature state, at this time, the first output pin out1 of the temperature controller 3 is set to a low level, the second output pin out2 and the third output pin out3 are set to a high level, and current flows into the blue LED pin B, and the three-primary color warning light 1 displays blue.

[0023] If the temperature value collected by the temperature sensor 4 is in a low temperature state, at this time, the first output pin out1 of the temperature controller 3 is set to a high level, the second output pin out2 and the third output pin out3 are set to a low level, and current is passed through the red LED pin R and the green LED pin G, and the three-primary color warning light 1 displays a mixed color of red and green light, that is, yellow, and the three-primary color warning light 1 displays yellow.

[0024] If the temperature value collected by the temperature sensor 4 is in a normal state, at this time, the second output pin out2 of the temperature controller 3 is set to a low level, the first output pin out1 and the third output pin out3 are set to a high level, and current flows into the green LED pin G, and the three-primary color warning light 1 displays green.

[0025] If the temperature value collected by the temperature sensor 4 is in a high temperature state, at this time, the third output pin out3 of the temperature controller 3 is set to a low level, the first output pin out1 and the second output pin out2 are set to a high level, and current flows into the red LED pin R, and the three-primary color warning light 1 displays red.

[0026] The temperature controller 3 is any one of a single chip microcomputer or a PLC. In this embodiment, a single chip microcomputer is preferred. For those skilled in the art, the conversion of the level state of the single chip microcomputer output pin can be realized by programming, which belongs to the prior art.

[0027] The controller is also provided with a ground pin GND and a first input pin IN1 and a second input pin IN2. The first input pin IN1 and the second input pin IN2 are both electrically connected to the temperature sensor 4. The temperature sensor 4 is an NTC temperature sensor 4. The ground pin GND, the power supply pin VCC and the common anode pin com are all electrically connected to the power module.

[0028] NTC temperature sensor is a combination of a thermistor and a probe. Its specific working principle is that the resistance value decreases rapidly as the temperature rises. Using this characteristic, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling temperature.

[0029] NTC temperature sensors are usually composed of two or three metal oxides, mixed in a fluid-like clay, and fired in a high-temperature furnace into a dense sintered ceramic. The actual size is very flexible, and they can be as small as 0.010 inches or very small diameter.

[0030] like Figure 3As shown, the power module includes a 220V power input terminal, a step-down transformer 5, a diode bridge rectifier circuit 6 and an output voltage stabilizing chip 7. The 220V power input terminal is connected to the step-down transformer 5, the step-down transformer 5 is electrically connected to the diode bridge rectifier circuit 6, and the diode bridge rectifier circuit 6 is electrically connected to the output voltage stabilizing chip 7.

[0031] In this embodiment, the step-down transformer 5 steps down the 220V voltage to 12V, and then converts the 12V voltage into a DC 5V voltage output through a bridge rectifier circuit and a voltage regulator chip 7805 to provide working voltage for the temperature controller 3 and the three-primary-color warning light 1.

[0032] The specific working process of the multi-color refrigerator temperature warning device is as follows:

[0033] The temperature sensor 4 is used to convert the temperature in the refrigerator into an electrical signal and transmit it to the temperature controller 3. The temperature controller 3 drives the three-primary color warning light 1 to display different colors according to the collected temperature value, so as to intuitively obtain the operating status of the cabinet.

[0034] The utility model discloses a multi-color refrigerator temperature warning device. The temperature controller collects the temperature inside the refrigerator through a temperature sensor. At the same time, the temperature controller stores range values ​​of temperatures in different operating states. The collected temperature values ​​are compared with the stored operating state temperature range values, and three-primary color warning lights are driven to display different colors, so as to intuitively obtain the operating state of the cabinets.

[0035] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A multi-color refrigerator temperature warning device, characterized in that: The invention comprises a refrigerator (2), wherein a temperature sensor (4) is arranged in the refrigerator (2), and a temperature controller (3), a three-primary-color warning light (1) and a power module are arranged on the refrigerator, wherein the temperature sensor (4) is electrically connected to the temperature controller (3), the temperature controller (3) is electrically connected to the three-primary-color warning light (1), and the three-primary-color warning light (1) and the temperature controller (3) are both electrically connected to the power module.

2. The multi-color refrigerator temperature warning device according to claim 1, characterized in that: The three-primary-color warning light (1) is fixed to the top of the refrigerator (2) or embedded and fixed to the top of the refrigerator door, and the three-primary-color warning light is a three-primary-color LED light bar or a three-primary-color LED light box.

3. The multi-color refrigerator temperature warning device according to claim 1, characterized in that: The three-primary-color warning light includes a red LED pin R, a green LED pin G, a blue LED pin B and a common anode pin com. The temperature controller is provided with a power supply pin VCC, a first output pin out1, a second output pin out2 and a third output pin out3. The third output pin out3 is connected to the red LED pin R, the second output pin out2 is connected to the green pin G, the first output pin out1 is connected to the blue LED pin B, and a current limiting resistor R is also provided on the common anode pin com, and the common anode pin com is connected to the power supply pin VCC through the current limiting resistor R.

4. The multi-color refrigerator temperature warning device according to claim 3, characterized in that: The controller is also provided with a ground pin GND and a first input pin IN1 and a second input pin IN2, the first input pin IN1 and the second input pin IN2 are both electrically connected to the temperature sensor (4), the temperature sensor (4) is an NTC temperature sensor, and the ground pin GND, the power supply pin VCC and the common anode pin com are all electrically connected to the power module.

5. The multi-color refrigerator temperature warning device according to claim 1, characterized in that: The power module comprises a 220V power input terminal, a step-down transformer (5), a diode bridge rectifier circuit (6) and an output voltage stabilizing chip (7); the 220V power input terminal is connected to the step-down transformer (5), the step-down transformer (5) is electrically connected to the diode bridge rectifier circuit (6), and the diode bridge rectifier circuit (6) is electrically connected to the output voltage stabilizing chip (7).

6. The multi-color refrigerator temperature warning device according to claim 1, characterized in that: The temperature controller (3) is any one of a single chip microcomputer and a PLC.

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