CN203606992U - Instrument for demonstrating phenomenon that dripping water freezes - Google Patents

Abstract

The utility model discloses an instrument for demonstrating the phenomenon that dripping water freezes. The demonstrating instrument system is formed by a switching power supply, a temperature control switch, a water cooling head, semiconductor chilling plate modules, a temperature control probe, Led bulbs, a water receiver, a throttle valve, a water flow regulator, a water inlet interface, a water pump, a water outlet interface, a heat exchanger, a heat dissipation fan, cooling water, a cold water tank, insulation plastic foam, a refrigeration chamber, an aluminum alloy cold guide box and a light shading cover and the like. The demonstrating instrument is very simple to operate, and operators only need to prepare water and power on the demonstrating instrument. In the heat dissipation aspect, the water pump is adopted to achieve cooling water circulation heat dissipation, the heat dissipation is efficient and stable, and water resources can be saved by utilization of the cooling water circulation. The demonstrating instrument is very simple and compact in structure, and can be maintained very conveniently. A stable low-temperature environment below zero can be manufactured, thereby facilitating performing small low-temperature experiments such as physics, chemistry and biology and the like.

Description

The water freezes as it drips demonstrator

Technical field

The utility model relates to a kind of refrigerating plant, relates in particular to semiconductor quick refrigerating, and relates to the quick cooling test of liquid under low temperature.

Background technology

Peltier effect is in the time of the loop consisting of different conductors electric current, except producing irreversible Joule heat, in the joint of different conductor along with heat absorption, exothermic phenomenon can appear respectively in the difference of direction of current.Semiconductor more easily produces thermoelectric effect than metal.The heat absorbing from cold space is delivered to hot side thermal source receptacle by N-type and P-type semiconductor thermocouple element, is then discharged in surrounding environment.The refrigerating efficiency of semiconductor cooler is generally very little before, so unsuitable extensive and large refrigerating capacity is used.

In recent years, along with developing rapidly of semiconductor technology, the refrigerating efficiency of semiconductor cooler has improved a lot, and it has all obtained utilization as a kind of green " low-temperature receiver " in the field such as space flight, industry.But because high efficiency semiconductor cooler cost is high, make semiconductor refrigerating extensively not be popularized for civil area.So generally can not touch semiconductor cooler in daily life study, but compression mechanism cooler of the upper use such as air-conditioning, refrigerator at present.The semi-conductive product of existing use at present, as adopted semiconductor refrigerating on the high-end water dispenser of part.The utility model is to understand more deeply for semiconductor refrigeration principle being had more intuitively, there is at present similar Chinese patent " semiconductor refrigeration demonstration instrument " (application number: 200710194268.3), this device adopts general semiconductor cooling piece, without heat abstractor, structure is too simple, and refrigeration is not clearly.

Summary of the invention

The purpose of this utility model is to provide a kind of the water freezes as it drips demonstrator, and it has can fast cooling, only has the small vibrations of current, and the life-span is long, install easily, and without any need for cold-producing medium, reliable and stable and advantage that control is easy to use.

The utility model is achieved like this, it comprises Switching Power Supply, temperature detect switch (TDS), water-cooling head, semiconductor chilling plate module, temperature probe, Led bulb, dripping device, water inlet interface, water pump, water outlet mouthpiece, heat exchanger, radiator fan, chilled water, cold rinse bank, insulating plastic pipe foam, cool room, aluminium alloy conduction cooling case, circulating water pipe and lightshade cover, its structure is that the inwall of cool room is that the outer wall of aluminium alloy conduction cooling case, cool room is insulating plastic pipe foam, and the periphery of insulating plastic pipe foam is lightshade cover; Cool room sidewall and bottom are equipped with semiconductor chilling plate module, and the chill surface of semiconductor chilling plate module is close to aluminium alloy conduction cooling case, and the face of heating is close to water-cooling head, and cool room upper portion side wall is provided with temp probe, and cool room top inner wall is provided with several Led bulbs; Dripping device is connected to the top of cool room; The water inlet interface of circulating water pipe is connected on an interface of water-cooling head, the water outlet mouthpiece of circulating water pipe is connected on another interface of same water-cooling head, on circulating water pipe near water inlet interface, be connected with water pump, on circulating water pipe near water outlet mouthpiece, be connected with heat exchanger, in heat exchanger, be provided with radiator fan, the part that circulating water pipe is positioned at below cold rinse bank chilled water liquid level disconnects; Temperature detect switch (TDS) one end connects the temperature probe in cool room, and the other end is by the power on/off of relay control switch power supply and semiconductor chilling plate module; Described dripping device comprises water receiver, throttling valve and flow regulator, and wherein the lower end of water receiver is positioned at cool room, is connected with from the top down throttling valve and flow regulator between cool room and water receiver in turn; Described Switching Power Supply is temperature detect switch (TDS), semiconductor chilling plate module, Led bulb, water pump and radiator fan power supply; In described water-cooling head, be provided with several upper and lower staggered water-stop sheets.

Technique effect of the present utility model is: adopt semiconductor refrigerating, without compression set, without any need for cold-producing medium, unharmful substance is disseminated in air and refrigeration product, can fast cooling, when work, only have the small vibrations of current, and the life-span is long, and it is easy to install.Very simple in operation, only need be ready to water, energising.Heat radiation aspect adopts water pump to realize cooling water circulation heat radiation, heat radiation that can high-efficiency stable, and cooling water circulation uses can saving water resource.This demonstrator structure is very simple, thereby maintenance is got up also very convenient.Can manufacture stable subzero low temperature environment, be convenient to carry out the low temperature tests such as little physics, chemistry, biology simultaneously.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural profile structural representation of water-cooling head.

Switching Power Supply 2, temperature detect switch (TDS) 3, water-cooling head 4, semiconductor chilling plate module 5, temperature probe 6, Led bulb 7, water receiver 8, throttling valve 9, flow regulator 10, water inlet interface 11, water pump 12, water outlet mouthpiece 13, heat exchanger 14, radiator fan 15, chilled water 16, cold rinse bank 17, insulating plastic pipe foam 18, cool room 19, metal guide ice chest 20, lightshade cover 21, circulating water pipe 22, water-stop sheet in the drawings, 1.

Embodiment

As depicted in figs. 1 and 2, the utility model is achieved like this, it comprises Switching Power Supply 1, temperature detect switch (TDS) 2, water-cooling head 3, semiconductor chilling plate module 4, temperature probe 5, Led bulb 6, water receiver 7, throttling valve 8, flow regulator 9, water inlet interface 10, water pump 11, water outlet mouthpiece 12, heat exchanger 13, radiator fan 14, chilled water 15, cold rinse bank 16, insulating plastic pipe foam 17, cool room 18, aluminium alloy conduction cooling case 19, lightshade cover 20 and circulating water pipe 21, its design feature is that the inwall of cool room 18 is aluminium alloy conduction cooling case 19, outer wall is insulating plastic pipe foam 17, semiconductor chilling plate module 4 chill surfaces are close to aluminium alloy conduction cooling case 19, the face of heating is close to water-cooling head 3, cool room top is provided with temp probe 5, Led bulb 6, dripping device comprises water receiver 7, throttling valve 8, flow regulator 9, the circulation system of right side chilled water, chilled water 15 flows into the water inlet interface 10 of cool room 18 through water pump 11 from cold rinse bank 16, flow into and flow out from another one interface again from an interface of water-cooling head 3 at cool room 18 internal cooling water 15, chilled water flows out cool room through water outlet mouthpiece 12 by circulating water pipe 21, flow into again heat exchanger 13, after radiator fan 14 is cooling, flow into cold rinse bank 16 and complete the circulation of chilled water 15, left side is power supply and attemperating unit, Switching Power Supply 1 is powered for temperature detect switch (TDS) 2, semiconductor chilling plate module 4, Led bulb 6, water pump 11 and radiator fan 14,2 one sections of temperature detect switch (TDS)s connect 5 one sections of temperature probes in cool rooms 18 by relay control switch power supply 1 power on/off with semiconductor chilling plate module 4, lightshade cover 20 avoids high light direct projection to cause the temperature of cool room 18 to raise.

Principle of work of the present utility model is such, turn on the power switch power supply 1 and start power supply, temperature detect switch (TDS) 2, Led bulb 6, water pump 11 and radiator fan 14 are started working, and chilled water 15 flows into cool room 18 from cold rinse bank 16 through water pump 11 to start to circulate from new inflow cold rinse bank 16 through heat exchanger 13 again, after energising, temperature detect switch (TDS) 2 starts to measure the temperature in cool room 18 by temperature probe 5, when temperature during higher than setting value temperature detect switch (TDS) 2 pilot relays connect semiconductor chilling plate modules 4, semiconductor chilling plate module 4 start working after cool room 18 temperature start reduce, the temperature of temperature detect switch (TDS) 2 Real-Time Monitoring cool rooms 18, when cool room temperature is during lower than setting value, temperature detect switch (TDS) 2 pilot relays disconnect semiconductor chilling plate module 4 and stop refrigeration, after temperature raises, semiconductor chilling plate module 4 is started working again, so circulation guarantees the low temperature that maintains setting of cool room 18, when opening throttling valve 8 after the temperature constant of cool room 18, regulate the speed of water droplet by flow regulator 9, by slowly constant splashing in cool room of the water in water receiver 7, after keeping each water droplet to drip, all can coolingly freeze, will below dripping device, form so a upwards icicle for growth, Led bulb 6 can provide illumination for cool room 18 by switch, convenient cool room 18 inner cases of observing, in process of refrigerastion, cover lightshade cover 20, when observation, open again.Demonstrator completes the demonstration that the water freezes as it drips since then.

Semiconductor chilling plate module 4 forms by organizing semiconductor chilling plate more, all use heat conductive silica gel to make itself and aluminium alloy conduction cooling case 19 and water-cooling head 3 close contacts at the chill surface of semiconductor chilling plate module and the face that heats, be conducive to the conduction cooling and the heat radiation that heats face of chill surface, in water-cooling head 3, be provided with several upper and lower staggered water-stop sheets 22; Making the flowing of current employing M shape of water-cooling head 3 inside is also that cool room 18 outer wrap insulating plastic pipe foams 17 not only reach heat insulation effect but also have protective effect in order to be more conducive to heat radiation.Chilled water 15 initial temperatures will lowly add appropriate ice cube as much as possible if desired in cold rinse bank 16, and the volume of cold rinse bank 16 as far as possible more greatly, should enter in the cool demonstration, and will avoid high light direct projection, thereby reach better demonstration effect.

Claims (4)

1. a water freezes as it drips demonstrator, it comprises Switching Power Supply, temperature detect switch (TDS), water-cooling head, semiconductor chilling plate module, temperature probe, Led bulb, dripping device, water inlet interface, water pump, water outlet mouthpiece, heat exchanger, radiator fan, chilled water, cold rinse bank, insulating plastic pipe foam, cool room, aluminium alloy conduction cooling case, circulating water pipe and lightshade cover, its structure is that the inwall of cool room is that the outer wall of aluminium alloy conduction cooling case, cool room is insulating plastic pipe foam, and the periphery of insulating plastic pipe foam is lightshade cover; Cool room sidewall and bottom are equipped with semiconductor chilling plate module, and the chill surface of semiconductor chilling plate module is close to aluminium alloy conduction cooling case, and the face of heating is close to water-cooling head, and cool room upper portion side wall is provided with temp probe, and cool room top inner wall is provided with several Led bulbs; Dripping device is connected to the top of cool room; The water inlet interface of circulating water pipe is connected on an interface of water-cooling head, the water outlet mouthpiece of circulating water pipe is connected on another interface of same water-cooling head, on circulating water pipe near water inlet interface, be connected with water pump, on circulating water pipe near water outlet mouthpiece, be connected with heat exchanger, in heat exchanger, be provided with radiator fan, the part that circulating water pipe is positioned at below cold rinse bank chilled water liquid level disconnects; Temperature detect switch (TDS) one end connects the temperature probe in cool room, and the other end is by the power on/off of relay control switch power supply and semiconductor chilling plate module.

2. one as claimed in claim 1 the water freezes as it drips demonstrator, it is characterized in that, described dripping device comprises water receiver, throttling valve and flow regulator, and wherein the lower end of water receiver is positioned at cool room, is connected with from the top down throttling valve and flow regulator between cool room and water receiver in turn.

3. one as claimed in claim 1 the water freezes as it drips demonstrator, is characterized in that, described Switching Power Supply is temperature detect switch (TDS), semiconductor chilling plate module, Led bulb, water pump and radiator fan power supply.

4. one as claimed in claim 1 the water freezes as it drips demonstrator, is characterized in that, is provided with several upper and lower staggered water-stop sheets in described water-cooling head.

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