CN2173924Y - Multipurpose portable low-temp. fresh-preserving box - Google Patents

Abstract

The utility model relates to a multi-purpose portable low-temperature fresh-preserving box. A refrigerating function is added in an original heat-preserving box to ensure that a semiconductor refrigerating sheet is positioned between a heat radiating piece and a cold radiating buffer. Two temperature controllers are tightly clung to both sides of the cold radiating buffer, one electrode of the semiconductor refrigerating sheet is connected with a reversing switch, two paralleled temperature controllers, a switch, and a battery in series in sequence, and the other electrode of the battery is electrically connected with the other electrode of the semiconductor refrigerating sheet. When electric currents are led in the positive direction, the semiconductor refrigerating sheet is used for refrigeration to guarantee the refrigerating effect in the box by means of the cold radiating buffer. When electric currents are led in the reverse direction, the semiconductor refrigerating sheet is used for heating to guarantee the heating effect in the box by means of the heat radiating piece.

Description

Multipurpose portable low-temp. fresh-preserving box

The utility model has related to a kind of multi-purpose portable preservation by low temperature case, and its temperature control principle is to utilize semiconductor chilling plate to absorb the speed difference of (emitting) heat under different electric currents, and reaches the temperature of accurately controlling in the antistaling box.The utility model can be used as the portable casing that family expenses are adopted thing case, wanigan, medical first-aid kit, medicine-chest, preservation by low temperature case etc.

Usually people are with reducing temperature, and methods such as reduction oxygen concentration reach fresh-keeping purpose.But this equipment involves great expense on the one hand; Volume is big on the other hand, and inconvenience is carried.When people out purchase article, usually run into the commodity that some need preservation by low temperature, if when quantity required is little, it is very uneconomic adopting common freshness preserving equipment.And general heat-preserving equipment can only keep required low temperature within a short period of time, in can not reaching, the long-distance transport purpose.People usually need again some article are deposited separately when the storage article, need different temperature between each article, adopt general refrigeration plant, must need bigger spending, and cause waste to a great extent.

The purpose of this utility model provides a kind of multi-purpose portable preservation by low temperature case just in order to solve above-mentioned shortcoming.Only volume is not little for it, is easy to carry, and can also accurately controls temperature in the casing.

The purpose of this utility model is achieved in that in the lid of a sealed plastic foam thermal insulation case upper strata, one flat tabular semiconductor chilling plate is arranged between radiating piece and cold scattering buffer, its heat absorbing end and release end of heat are close together with cold scattering buffer and radiating piece respectively, bonding with heat-conducting silicone grease, wherein the cold scattering buffer is a rectangle fin, radiating piece is hollow fin, hollow fin is near cabinet shell, the rectangle fin is near the casing inner casing, pyrostat and cryostat and cold scattering buffer both sides are close together, cryostat is to be made of relay and mercury contact thermometer, pyrostat is to be made of relay and mercury contact thermometer, an electrode of semiconductor chilling plate is electrically connected with an end of a reversing switch, the other two ends of reversing switch are electrically connected with an end of pyrostat and cryostat respectively, after being connected, the other end of two temperatures controller is electrically connected with an end of switch, the other end of switch is electrically connected with a utmost point of battery, and another electrode of another utmost point and semiconductor chilling plate of battery is electrically connected.When forward fed electric current, the semiconductor chilling plate refrigeration made the effect that reaches refrigeration in the case by the cold scattering buffer.When anti-phase feeding electric current, semiconductor chilling plate heats, and makes by radiating piece to reach the effect that heats in the case, thereby can develop multiple use.

Adopt such scheme, can reach the purpose that keeps low temperature in the case for a long time.It simple in structure, easy to carry is the strong helper of every profession and trades such as family, hospital, transportation department.

By accompanying drawing utility model is described in detail below.

Accompanying drawing-1-is the cutaway view of casing.

Accompanying drawing-2-is the enlarged diagram of casing refrigeration plant.

The work package of this casing mainly is made up of semiconductor chilling plate, radiator, temperature controller and buffer.Accompanying drawing-1-is the installation site of work package in whole box body.(1) be work package, (2) are the cold scattering layers.Casing is that the insulation material by high-quality constitutes, and in the perforate of the appropriate location of casing, work package is assigned in the hole, makes whole box body still keep sealing state.The cold scattering layer is fixed on the casing inner casing, closely links to each other with work package.When work package was started working, the low temperature of its generation was transmitted in the casing by the cold scattering layer, and the cold scattering aspect is long-pending bigger, made refrigeration evenly.Work package can be installed in the diverse location of casing according to different needs and external equipment.Accompanying drawing-2-is the installation diagram of work package.(3) be thermal window; (4) be fin; (5) be semiconductor chilling plate; (6) be pyrostat; (7) be cold scattering layer buffer; (8) be cryostat.Draw two leads by semiconductor chilling plate (5), one directly links to each other with power supply, and another links to each other with power supply through behind the temperature controller.When forward fed electric current, reversing switch made cryostat (8) place in circuit, and pyrostat (6) opens circuit, and the cooling piece lower end produces low temperature, and the cold scattering layer is given in conduction through cold scattering layer buffer (7), thereby reached the effect of refrigeration in the case.When temperature reaches requirement, be installed in cryostat (8) outage automatically in the cold scattering layer buffer, when temperature recovery, cryostat (8) but automatic processing circuit again, the power supply refrigeration makes to keep steady temperature in the case.The heat that the cooling piece upper end produces is emitted by thermal window through fin.When oppositely feeding electric current, reversing switch makes pyrostat (6) place in circuit, and cryostat (8) opens circuit, and the cooling piece lower end produces high temperature, and the cold scattering layer is given in conduction through buffer (7), reaches the effect that heats in the case thereby make.When temperature reaches requirement, be installed in pyrostat (6) outage automatically in the buffer, when temperature recovery, pyrostat (6) but automatic processing circuit again, power supply heats, and makes to keep steady temperature in the case.The cold air that the cooling piece upper end produces is emitted by thermal window through fin.Cryostat (8) is to be made of relay and low-temperature space thermoregulator (mercury contact thermometer), controls the temperature of low-temperature space by regulating the low-temperature space thermoregulator; Pyrostat (6) is to be made of relay and high-temperature region thermoregulator (mercury contact thermometer), controls the temperature of high-temperature region by regulating the high-temperature region thermoregulator.Cold scattering layer buffer can cushion cold or hot that refrigerator produces, thereby cold or hot conduction equably is scattered in the case.In order to make hot and cold both ends of the surface of refrigerator and fin, the complete excellent contact of cold scattering layer buffer, can on contact-making surface, evenly be coated with heat-conducting silicone grease.Between (2), (7), insert good insulation material, to increase effect of heat insulation.

During the utility model has solved, long-distance in the problem of fresh-keeping difficulty, under the condition of the volume and weight that does not increase casing, increased a little light-duty refrigeration, heating, be very easy to the user, the transportation difficulty of having avoided the restriction owing to aspects such as temperature to cause.

The utility model can increase sensor in refrigeration end, links to each other with temperature indicator, increases some accessory circuits and just can show temperature in the casing, thereby reach the strict purpose of controlling the temperature inside the box.

Claims (1)

1, a kind of multi-purpose portable preservation by low temperature case, by casing, semiconductor chilling plate, radiating piece, the cold scattering buffer, pyrostat, cryostat, reversing switch, switch and battery constitute, it is characterized in that: in the lid of a sealed plastic foam thermal insulation case upper strata, one flat tabular semiconductor chilling plate is arranged between radiating piece and cold scattering buffer, its heat absorbing end and release end of heat are close together with cold scattering buffer and radiating piece respectively, bonding with heat-conducting silicone grease, wherein the cold scattering buffer is a rectangle fin, radiating piece is hollow fin, hollow fin is near cabinet shell, the rectangle fin is near the casing inner casing, pyrostat and cryostat and cold scattering buffer both sides are close together, cryostat is to be made of relay and mercury contact thermometer, pyrostat is to be made of relay and mercury contact thermometer, an electrode of semiconductor chilling plate is electrically connected with an end of a reversing switch, the other two ends of reversing switch are electrically connected with an end of pyrostat and cryostat respectively, after being connected, the other end of two temperatures controller is electrically connected with an end of switch, the other end of switch is electrically connected with a utmost point of battery, and another electrode of another utmost point and semiconductor chilling plate of battery is electrically connected.

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