CN103335468A - Semiconductor-type vehicle-mounted refrigerator with adjustable and displayable temperature - Google Patents

Abstract

The invention discloses a semiconductor-type temperature-adjustable and displayable vehicle-mounted refrigerator, which comprises a power supply module, a temperature control module, a semiconductor heat pump, a thermometer module, and an LED display part; the output terminal of the power supply module is connected with the input terminal of the temperature control module, and the temperature The output end of the control module is connected with the semiconductor heat pump, and the thermometer module converts the temperature signal into a digital signal and inputs it to the LED display part; wherein, the specific structure of the semiconductor heat pump is: the positive pole of the power supply is connected to one end of the N-type semiconductor element through the first hot end. The other end of the N-type semiconductor element is connected to one end of the P-type semiconductor element through the cold end, and the other end of the P-type semiconductor element is connected to the negative pole of the power supply through the second hot end. The semiconductor-type temperature-adjustable and display-mounted refrigerator disclosed by the invention can achieve cooling or heating effects, has the advantages of energy saving, environmental protection, noiselessness, lightness, and the like, and is relatively low in cost.

Description

Semiconductor type temperature adjustable and displayable car refrigerator

technical field

The invention discloses a semiconductor-type temperature-adjustable and displayable vehicle-mounted refrigerator.

Background technique

Car refrigerators are the continuation of household refrigerators. The commonly used technical solutions are made by semiconductor electronic refrigeration technology, and some are made by compressor refrigeration technology. Car refrigerators generally require less noise and less pollution. You only need to insert the power plug into the cigarette lighter hole to cool down the refrigerator while driving. At present, the compressor car refrigerator is mainly used in the market. The compressor is the traditional technology of the traditional refrigerator, and the cooling temperature is low. But this kind of refrigerator is heavy in weight, inconvenient to carry, and expensive.

Contents of the invention

The technical problem to be solved by the present invention is to provide a semiconductor-type temperature-adjustable and displayable vehicle-mounted refrigerator for the defects of the prior art.

The present invention adopts the following technical solutions for solving the problems of the technologies described above:

A semiconductor-type temperature-adjustable and displayable vehicle-mounted refrigerator, characterized in that it includes a power supply module, a temperature control module, a semiconductor heat pump, a thermometer module, and an LED display unit; wherein, the output terminal of the power supply module is connected to the input terminal of the temperature control module , the output terminal of the temperature control module is connected to the semiconductor heat pump, and the thermometer module converts the temperature signal into a digital signal and inputs it to the LED display unit;

Among them, the specific structure of the semiconductor heat pump includes a first hot end, a second hot end, a cold end, an N-type semiconductor element, and a P-type semiconductor element, wherein: the positive electrode is connected to one end of the N-type semiconductor element through the first hot end, and the N The other end of the P-type semiconductor element is connected to one end of the P-type semiconductor element through the cold end, and the other end of the P-type semiconductor element is connected to the negative electrode through the second hot end.

As a further preferred solution of the present invention, the first and second hot ends of the semiconductor heat pump are also connected with a cooling device.

As a further preferred solution of the present invention, the heat dissipation and cooling device is a heat sink or a fan.

Compared with the prior art, the present invention adopts the above technical solutions and has the following technical effects: the semiconductor refrigerator can achieve cooling or heating effects, has the advantages of energy saving, environmental protection, noiseless, light, etc., and the cost is relatively low.

Description of drawings

Figure 1 is a schematic diagram of semiconductor refrigeration.

Fig. 2 is a schematic diagram of module connection of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

The schematic diagram of semiconductor refrigeration is shown in Figure 1. The semiconductor refrigeration sheet is based on the Peltier effect. The heat pump made of semiconductors transfers the heat from the cold end to the hot end, and dissipates the excess heat with heat sinks or heat exchange fans. The picture is a schematic diagram of the working principle. A P-type semiconductor element and an n-type semiconductor element are connected to form a thermocouple. After connecting to a DC power supply, a temperature difference and heat transfer will occur at the joint. At one of the upper joints, the current direction is n—p, the temperature drops and absorbs heat, which is the cold end. And at a joint below, the current direction is p-n, the temperature rises and releases heat, so it is a hot end. If a large enough heat sink and cooling device (such as a fan) are installed on the hot end to keep it at a certain temperature, then the cold end can continuously absorb heat from the surrounding medium to achieve cooling. The power of the semiconductor refrigeration sheet is not large, and the largest refrigerator generally cannot exceed 50 liters, otherwise the refrigeration sheet is easy to heat and burn.

The module connection schematic diagram of the present invention is as shown in Figure 2, comprises power supply module, temperature control module, semiconductor heat pump, thermometer module, LED display part; The terminal is connected to the semiconductor heat pump, and the thermometer module converts the temperature signal into a digital signal and inputs it to the LED display part;

Among them, the specific structure of the semiconductor heat pump is: the positive pole of the power supply is connected to one end of the N-type semiconductor element through the first hot end, the other end of the N-type semiconductor element is connected to one end of the P-type semiconductor element through the cold end, and the P-type semiconductor element The other end is connected to the negative pole of the power supply through the second hot end.

As a further preferred solution of the present invention, the first and second hot ends of the semiconductor heat pump are also connected with a cooling device.

As a further preferred solution of the present invention, the heat dissipation and cooling device is a heat sink or a fan.

Claims (3)

1. a semi-conductor type temperature can be regulated and can be shown car refrigerator, it is characterized in that: comprise power module, temperature control modules, thermoelectric heat pump, thermometer module, led display unit; Wherein, the output of power module is connected with the input of temperature control modules, and the output of temperature control modules is connected with thermoelectric heat pump, and the thermometer module converts temperature signal to data signal and inputs to led display unit;

Wherein, the concrete structure of thermoelectric heat pump comprises first hot junction, second hot junction, cold junction, N-type semiconductor element, P-type semiconductor element, wherein: an anodal end by first hot junction and N-type semiconductor element is connected, the other end of N-type semiconductor element is connected by an end of cold junction and P-type semiconductor element, and the other end of P-type semiconductor element is connected with negative pole by second hot junction.

2. a kind of semi-conductor type temperature as claimed in claim 1 can be regulated and can be shown car refrigerator, it is characterized in that: first, second hot junction of described thermoelectric heat pump also is connected with heat radiation cooling device.

3. a kind of semi-conductor type temperature as claimed in claim 2 can be regulated and can be shown car refrigerator, it is characterized in that: described heat radiation cooling device is fin or fan.

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